Fix sigsegv

src/main/java/it/cavallium/dbengine/database/LLUtils.java

@@ -489,6 +489,9 @@ public class LLUtils {
 	}
 
 	public static Buf unmodifiableBytes(Buf previous) {
+		if (previous == null) {
+			return null;
+		}
 		previous.freeze();
 		return previous;
 	}

src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapDictionary.java

@@ -176,7 +176,7 @@ public class DatabaseMapDictionary<T, U> extends DatabaseMapDictionaryDeep<T, U,
 					buf1.skipNBytes(keyPrefixLength);
 					suffixAndExtKeyConsistency(buf1.available());
 
-					key = deserializeSuffix(serializedValue);
+					key = deserializeSuffix(buf1);
 					U value = valueSerializer.deserialize(serializedValue);
 					deserializedEntry = Map.entry(key, value);
 					return deserializedEntry;
@@ -295,6 +295,9 @@ public class DatabaseMapDictionary<T, U> extends DatabaseMapDictionaryDeep<T, U,
 		var keyMono = serializeKeySuffixToKey(keySuffix);
 		var valueMono = serializeValue(value);
 		var valueBuf = dictionary.put(keyMono, valueMono, LLDictionaryResultType.PREVIOUS_VALUE);
+		if (valueBuf == null) {
+			return null;
+		}
 		return deserializeValue(keySuffix, BufDataInput.create(valueBuf));
 	}
 

src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapDictionaryDeep.java

@@ -18,6 +18,7 @@ import it.cavallium.dbengine.database.serialization.Serializer;
 import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
 import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
 import java.util.Map.Entry;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.CompletionException;
@@ -28,6 +29,7 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.VisibleForTesting;
 
 // todo: implement optimized methods (which?)
 public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implements DatabaseStageMap<T, U, US> {
@@ -74,18 +76,25 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
 		}
 	}
 
-	static Buf firstRangeKey(Buf prefixKey, int prefixLength, Buf suffixAndExtZeroes) {
-		var modifiablePrefixKey = Buf.create(prefixLength + suffixAndExtZeroes.size());
-		modifiablePrefixKey.addAll(prefixKey);
-		zeroFillKeySuffixAndExt(modifiablePrefixKey, prefixLength, suffixAndExtZeroes);
+	@VisibleForTesting
+	public static Buf firstRangeKey(Buf prefixKey, int prefixLength, Buf suffixAndExtZeroes) {
+		return createFullKeyWithEmptySuffixAndExt(prefixKey, prefixLength, suffixAndExtZeroes);
+	}
+
+	@VisibleForTesting
+	public static Buf nextRangeKey(Buf prefixKey, int prefixLength, Buf suffixAndExtZeroes) {
+		Buf modifiablePrefixKey = createFullKeyWithEmptySuffixAndExt(prefixKey, prefixLength, suffixAndExtZeroes);
+		incrementPrefix(modifiablePrefixKey, prefixLength);
 		return modifiablePrefixKey;
 	}
 
-	static Buf nextRangeKey(Buf prefixKey, int prefixLength, Buf suffixAndExtZeroes) {
+	private static Buf createFullKeyWithEmptySuffixAndExt(Buf prefixKey, int prefixLength, Buf suffixAndExtZeroes) {
 		var modifiablePrefixKey = Buf.create(prefixLength + suffixAndExtZeroes.size());
+		if (prefixKey != null) {
 			modifiablePrefixKey.addAll(prefixKey);
+		}
+		assert prefixKey != null || prefixLength == 0 : "Prefix length is " +  prefixLength + " but the prefix key is null";
 		zeroFillKeySuffixAndExt(modifiablePrefixKey, prefixLength, suffixAndExtZeroes);
-		incrementPrefix(modifiablePrefixKey, prefixLength);
 		return modifiablePrefixKey;
 	}
 
@@ -98,7 +107,7 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
 		var suffixLengthAndExtLength = suffixAndExtZeroes.size();
 		assert result.size() == prefixLength;
 		assert suffixLengthAndExtLength > 0 : "Suffix length + ext length is < 0: " + suffixLengthAndExtLength;
-		result.size(prefixLength + suffixLengthAndExtLength);
+		result.size(prefixLength);
 		modifiablePrefixKey.addAll(suffixAndExtZeroes);
 		assert modifiablePrefixKey.size() == prefixLength + suffixAndExtZeroes.size() : "Result buffer size is wrong";
 	}
@@ -172,6 +181,10 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
 
 	@SuppressWarnings("unused")
 	protected boolean suffixKeyLengthConsistency(int keySuffixLength) {
+		assert
+				this.keySuffixLength == keySuffixLength :
+				"Key suffix length is " + keySuffixLength + ", but it should be " + this.keySuffixLength + " bytes long";
+		//noinspection ConstantValue
 		return this.keySuffixLength == keySuffixLength;
 	}
 
@@ -313,8 +326,8 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
 	}
 
 	protected void serializeSuffixTo(T keySuffix, BufDataOutput output) throws SerializationException {
-		assert suffixKeyLengthConsistency(output.size());
 		var beforeWriterOffset = output.size();
+		assert beforeWriterOffset == keyPrefixLength;
 		keySuffixSerializer.serialize(keySuffix, output);
 		var afterWriterOffset = output.size();
 		assert suffixKeyLengthConsistency(afterWriterOffset - beforeWriterOffset)

src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapSingle.java

@@ -88,10 +88,9 @@ public final class DatabaseMapSingle<U> implements DatabaseStageEntry<U> {
 	}
 
 	@Override
-	public U update(SerializationFunction<@Nullable U, @Nullable U> updater,
-			UpdateReturnMode updateReturnMode) {
+	public U update(SerializationFunction<@Nullable U, @Nullable U> updater, UpdateReturnMode updateReturnMode) {
 		Buf resultBytes = dictionary.update(key, this.createUpdater(updater), updateReturnMode);
-		return deserializeValue(resultBytes);
+		return resultBytes != null ? deserializeValue(resultBytes) : null;
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/database/collections/DatabaseSingleton.java

@@ -39,6 +39,9 @@ public class DatabaseSingleton<U> implements DatabaseStageEntry<U> {
 	}
 
 	private U deserializeValue(Buf value) {
+		if (value == null) {
+			return null;
+		}
 		try {
 			return serializer.deserialize(BufDataInput.create(value));
 		} catch (IndexOutOfBoundsException ex) {

src/main/java/it/cavallium/dbengine/database/collections/DatabaseStageMap.java

@@ -203,11 +203,12 @@ public interface DatabaseStageMap<T, U, US extends DatabaseStage<U>> extends Dat
 
 	@Override
 	default Object2ObjectSortedMap<T, U> get(@Nullable CompositeSnapshot snapshot) {
-		Object2ObjectSortedMap<T, U> map = this
-				.getAllValues(snapshot, true)
+		try (var stream = this.getAllValues(snapshot, true)) {
+			Object2ObjectSortedMap<T, U> map = stream
 					.collect(Collectors.toMap(Entry::getKey, Entry::getValue, (a, b) -> a, Object2ObjectLinkedOpenHashMap::new));
 			return map.isEmpty() ? null : map;
 		}
+	}
 
 	@Override
 	default long leavesCount(@Nullable CompositeSnapshot snapshot, boolean fast) {

src/main/java/it/cavallium/dbengine/database/disk/LLLocalDictionary.java

@@ -5,6 +5,7 @@ import static it.cavallium.dbengine.database.LLUtils.MARKER_ROCKSDB;
 import static it.cavallium.dbengine.database.LLUtils.isBoundedRange;
 import static it.cavallium.dbengine.database.LLUtils.toStringSafe;
 import static it.cavallium.dbengine.database.disk.UpdateAtomicResultMode.DELTA;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 import static java.util.Objects.requireNonNull;
 import static it.cavallium.dbengine.utils.StreamUtils.batches;
 
@@ -699,7 +700,7 @@ public class LLLocalDictionary implements LLDictionary {
 				ro.close();
 				throw new DBException("Failed to open rocksdb iterator", ex);
 			}
-			return Stream.generate(() -> {
+			return streamWhileNonNull(() -> {
 				if (!rocksIterator.isValid()) return null;
 				Buf rawKey = null;
 				try {
@@ -709,7 +710,7 @@ public class LLLocalDictionary implements LLDictionary {
 					return new BadBlock(databaseName, ColumnUtils.special(columnName), rawKey, ex);
 				}
 				return null;
-			}).takeWhile(x -> rocksIterator.isValid()).filter(Objects::nonNull).onClose(() -> {
+			}).takeWhile(x -> rocksIterator.isValid()).onClose(() -> {
 				rocksIterator.close();
 				ro.close();
 			});
@@ -1030,14 +1031,16 @@ public class LLLocalDictionary implements LLDictionary {
 			if (USE_CURRENT_FASTSIZE_FOR_OLD_SNAPSHOTS || rocksdbSnapshot.snapshot() == null) {
 				try {
 					if (USE_NUM_ENTRIES_PRECISE_COUNTER) {
-						return exactSizeAll(null);
+						return getRocksDBNumEntries();
 					}
 					return db.getLongProperty("rocksdb.estimate-num-keys");
 				} catch (RocksDBException e) {
 					logger.error(MARKER_ROCKSDB, "Failed to get RocksDB estimated keys count property", e);
 					return 0;
 				}
-			} else if (USE_NUM_ENTRIES_PRECISE_COUNTER || PARALLEL_EXACT_SIZE) {
+			} else if (USE_NUM_ENTRIES_PRECISE_COUNTER && snapshot == null) {
+				return getRocksDBNumEntries();
+			} else if (PARALLEL_EXACT_SIZE) {
 				return exactSizeAll(snapshot);
 			} else {
 				rocksdbSnapshot.setFillCache(false);
@@ -1057,17 +1060,18 @@ public class LLLocalDictionary implements LLDictionary {
 		}
 	}
 
-	private long exactSizeAll(@Nullable LLSnapshot snapshot) {
-		if (LLUtils.isInNonBlockingThread()) {
-			throw new UnsupportedOperationException("Called exactSizeAll in a nonblocking thread");
-		}
-		if (snapshot == null && USE_NUM_ENTRIES_PRECISE_COUNTER) {
+	private long getRocksDBNumEntries() {
 		try {
 			return db.getNumEntries();
 		} catch (RocksDBException ex) {
 			throw new IllegalStateException("Failed to read exact size", ex);
 		}
 	}
+
+	private long exactSizeAll(@Nullable LLSnapshot snapshot) {
+		if (LLUtils.isInNonBlockingThread()) {
+			throw new UnsupportedOperationException("Called exactSizeAll in a nonblocking thread");
+		}
 		try (var readOpts = LLUtils.generateCustomReadOptions(generateReadOptionsOrNull(snapshot), false, false, false)) {
 			if (LLUtils.MANUAL_READAHEAD) {
 				readOpts.setReadaheadSize(128 * 1024); // 128KiB

src/main/java/it/cavallium/dbengine/database/disk/LLLocalGroupedReactiveRocksIterator.java

@@ -9,6 +9,7 @@ import it.cavallium.dbengine.database.LLRange;
 import it.cavallium.dbengine.database.LLUtils;
 import it.cavallium.dbengine.database.disk.rocksdb.RocksIteratorObj;
 import it.cavallium.dbengine.utils.DBException;
+import it.cavallium.dbengine.utils.StreamUtils;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import java.io.IOException;
 import java.util.List;
@@ -64,7 +65,7 @@ public abstract class LLLocalGroupedReactiveRocksIterator<T> {
 			throw new DBException("Failed to iterate the range", e);
 		}
 
-		return Stream.<List<T>>generate(() -> {
+		return StreamUtils.<List<T>>streamWhileNonNull(() -> {
 			try {
 				ObjectArrayList<T> values = new ObjectArrayList<>();
 				Buf firstGroupKey = null;
@@ -111,7 +112,7 @@ public abstract class LLLocalGroupedReactiveRocksIterator<T> {
 				}
 				throw new CompletionException(new DBException("Range failed", ex));
 			}
-		}).takeWhile(Objects::nonNull).onClose(() -> {
+		}).onClose(() -> {
 			rocksIterator.close();
 			readOptions.close();
 		});

src/main/java/it/cavallium/dbengine/database/disk/LLLocalKeyPrefixReactiveRocksIterator.java

@@ -3,12 +3,17 @@ package it.cavallium.dbengine.database.disk;
 import static it.cavallium.dbengine.database.LLUtils.MARKER_ROCKSDB;
 import static it.cavallium.dbengine.database.LLUtils.generateCustomReadOptions;
 import static it.cavallium.dbengine.database.LLUtils.isBoundedRange;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 
+import com.google.common.collect.Iterators;
+import com.google.common.collect.Streams;
 import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.database.LLRange;
 import it.cavallium.dbengine.database.LLUtils;
 import it.cavallium.dbengine.utils.DBException;
+import it.cavallium.dbengine.utils.StreamUtils;
 import java.io.IOException;
+import java.util.Objects;
 import java.util.concurrent.CompletionException;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
@@ -52,7 +57,7 @@ public class LLLocalKeyPrefixReactiveRocksIterator {
 			}
 			var rocksIterator = db.newRocksIterator(readOptions, range, false);
 
-			return Stream.generate(() -> {
+			return streamWhileNonNull(() -> {
 				try {
 					Buf firstGroupKey = null;
 					while (rocksIterator.isValid()) {

src/main/java/it/cavallium/dbengine/database/disk/LLLocalMigrationReactiveRocksIterator.java

@@ -1,6 +1,7 @@
 package it.cavallium.dbengine.database.disk;
 
 import static it.cavallium.dbengine.database.LLUtils.generateCustomReadOptions;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 
 import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.database.LLEntry;
@@ -39,7 +40,7 @@ public final class LLLocalMigrationReactiveRocksIterator {
 		} catch (RocksDBException e) {
 			throw new DBException("Failed to open iterator", e);
 		}
-		return Stream.generate(() -> {
+		return streamWhileNonNull(() -> {
 			try {
 				if (rocksIterator.isValid()) {
 					var key = rocksIterator.keyBuf().copy();
@@ -52,7 +53,7 @@ public final class LLLocalMigrationReactiveRocksIterator {
 			} catch (RocksDBException ex) {
 				throw new CompletionException(new DBException("Failed to iterate", ex));
 			}
-		}).takeWhile(Objects::nonNull).onClose(() -> {
+		}).onClose(() -> {
 			rocksIterator.close();
 			readOptions.close();
 		});

src/main/java/it/cavallium/dbengine/database/disk/LLLocalReactiveRocksIterator.java

@@ -3,6 +3,7 @@ package it.cavallium.dbengine.database.disk;
 import static it.cavallium.dbengine.database.LLUtils.MARKER_ROCKSDB;
 import static it.cavallium.dbengine.database.LLUtils.generateCustomReadOptions;
 import static it.cavallium.dbengine.database.LLUtils.isBoundedRange;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 
 import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.database.LLRange;
@@ -59,7 +60,7 @@ public abstract class LLLocalReactiveRocksIterator<T> {
 			throw new DBException("Failed to iterate the range", e);
 		}
 
-		return Stream.generate(() -> {
+		return streamWhileNonNull(() -> {
 			try {
 				if (rocksIterator.isValid()) {
 					// Note that the underlying array is subject to changes!
@@ -100,7 +101,7 @@ public abstract class LLLocalReactiveRocksIterator<T> {
 				}
 				throw new CompletionException(ex);
 			}
-		}).takeWhile(Objects::nonNull).onClose(() -> {
+		}).onClose(() -> {
 			rocksIterator.close();
 			readOptions.close();
 		});

src/main/java/it/cavallium/dbengine/database/memory/LLMemoryKeyValueDatabase.java

@@ -59,7 +59,7 @@ public class LLMemoryKeyValueDatabase implements LLKeyValueDatabase {
 		));
 		var singleton = new LLMemorySingleton(dict, columnNameString, singletonName);
 		Buf returnValue = singleton.get(null);
-		if (returnValue == null) {
+		if (returnValue == null && defaultValue != null) {
 			singleton.set(Buf.wrap(defaultValue));
 		}
 		return singleton;

src/main/java/it/cavallium/dbengine/lucene/CheckIndexInput.java

@@ -16,7 +16,7 @@ public class CheckIndexInput extends IndexInput {
 	}
 
 	private static void checkThread() {
-		assert LuceneUtils.isLuceneThread();
+		warnLuceneThread();
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/lucene/CheckIndexOutput.java

@@ -15,7 +15,7 @@ public class CheckIndexOutput extends IndexOutput {
 	}
 
 	private static void checkThread() {
-		assert LuceneUtils.isLuceneThread();
+		LuceneUtils.warnLuceneThread();
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/lucene/CheckOutputDirectory.java

@@ -49,7 +49,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public IndexOutput createOutput(String name, IOContext context) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			return new CheckIndexOutput(directory.createOutput(name, context));
 		} catch (IOException e) {
@@ -59,7 +59,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public IndexOutput createTempOutput(String prefix, String suffix, IOContext context) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			return new CheckIndexOutput(directory.createTempOutput(prefix, suffix, context));
 		} catch (IOException e) {
@@ -69,7 +69,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public void sync(Collection<String> names) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			directory.sync(names);
 		} catch (IOException e) {
@@ -79,7 +79,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public void syncMetaData() {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			directory.syncMetaData();
 		} catch (IOException e) {
@@ -89,7 +89,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public void rename(String source, String dest) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			directory.rename(source, dest);
 		} catch (IOException e) {
@@ -99,7 +99,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public IndexInput openInput(String name, IOContext context) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			return new CheckIndexInput(directory.openInput(name, context));
 		} catch (IOException e) {
@@ -109,7 +109,7 @@ public class CheckOutputDirectory extends Directory {
 
 	@Override
 	public Lock obtainLock(String name) {
-		LuceneUtils.checkLuceneThread();
+		LuceneUtils.warnLuceneThread();
 		try {
 			return directory.obtainLock(name);
 		} catch (IOException e) {

src/main/java/it/cavallium/dbengine/lucene/searcher/LuceneGenerator.java

@@ -1,5 +1,7 @@
 package it.cavallium.dbengine.lucene.searcher;
 
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
+
 import java.io.IOException;
 import it.cavallium.dbengine.utils.DBException;
 import java.util.Iterator;
@@ -51,7 +53,7 @@ public class LuceneGenerator implements Supplier<ScoreDoc> {
 			throw new IllegalArgumentException("Sorting is not allowed");
 		}
 		var lg = new LuceneGenerator(shard, localQueryParams, shardIndex);
-		return Stream.generate(lg).takeWhile(Objects::nonNull);
+		return streamWhileNonNull(lg);
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/lucene/searcher/PagedLocalSearcher.java

@@ -2,6 +2,7 @@ package it.cavallium.dbengine.lucene.searcher;
 
 import static it.cavallium.dbengine.lucene.searcher.CurrentPageInfo.EMPTY_STATUS;
 import static it.cavallium.dbengine.lucene.searcher.PaginationInfo.MAX_SINGLE_SEARCH_LIMIT;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 
 import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
 import it.cavallium.dbengine.database.LLKeyScore;
@@ -130,14 +131,14 @@ public class PagedLocalSearcher implements LocalSearcher {
 			LocalQueryParams queryParams, String keyFieldName, CurrentPageInfo secondPageInfo) {
 		AtomicReference<CurrentPageInfo> pageInfo = new AtomicReference<>(secondPageInfo);
 		Object lock = new Object();
-		Stream<ScoreDoc> topFieldDocFlux = Stream.generate(() -> {
+		Stream<ScoreDoc> topFieldDocFlux = streamWhileNonNull(() -> {
 			synchronized (lock) {
 				var currentPageInfo = pageInfo.getPlain();
 				var result = searchPageSync(queryParams, indexSearchers, true, 0, currentPageInfo);
 				pageInfo.setPlain(result.nextPageToIterate());
 				return result.pageData();
 			}
-		}).takeWhile(Objects::nonNull).flatMap(pd -> Stream.of(pd.topDocs().scoreDocs));
+		}).flatMap(pd -> Stream.of(pd.topDocs().scoreDocs));
 		return LuceneUtils.convertHits(topFieldDocFlux, indexSearchers, keyFieldName);
 	}
 

src/main/java/it/cavallium/dbengine/lucene/searcher/ScoredPagedMultiSearcher.java

@@ -1,6 +1,7 @@
 package it.cavallium.dbengine.lucene.searcher;
 
 import static it.cavallium.dbengine.lucene.searcher.PaginationInfo.MAX_SINGLE_SEARCH_LIMIT;
+import static it.cavallium.dbengine.utils.StreamUtils.streamWhileNonNull;
 
 import com.google.common.collect.Streams;
 import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
@@ -133,7 +134,7 @@ public class ScoredPagedMultiSearcher implements MultiSearcher {
 	private Stream<LLKeyScore> searchOtherPages(List<IndexSearcher> indexSearchers,
 			LocalQueryParams queryParams, String keyFieldName, CurrentPageInfo secondPageInfo) {
 		AtomicReference<CurrentPageInfo> currentPageInfoRef = new AtomicReference<>(secondPageInfo);
-		Stream<ScoreDoc> topFieldDocStream = Stream.generate(() -> {
+		Stream<ScoreDoc> topFieldDocStream = streamWhileNonNull(() -> {
 			var currentPageInfo = currentPageInfoRef.getPlain();
 			if (currentPageInfo == null) return null;
 			LOG.trace("Current page info: {}", currentPageInfo);
@@ -145,7 +146,7 @@ public class ScoredPagedMultiSearcher implements MultiSearcher {
 			} else {
 				return Arrays.asList(result.topDocs().scoreDocs);
 			}
-		}).takeWhile(Objects::nonNull).flatMap(Collection::stream);
+		}).flatMap(Collection::stream);
 
 		return LuceneUtils.convertHits(topFieldDocStream, indexSearchers, keyFieldName);
 	}

src/main/java/it/cavallium/dbengine/utils/StreamUtils.java

@@ -8,6 +8,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Spliterator;
 import java.util.function.Consumer;
+import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
@@ -48,6 +49,31 @@ public class StreamUtils {
 				: StreamSupport.stream(new BatchSpliterator<>(stream.spliterator(), batchSize), stream.isParallel());
 	}
 
+	@SuppressWarnings("UnstableApiUsage")
+	public static <X> Stream<X> streamWhileNonNull(Supplier<X> supplier) {
+		var it = new Iterator<X>() {
+
+			private boolean nextSet = false;
+			private X next;
+
+			@Override
+			public boolean hasNext() {
+				if (!nextSet) {
+					next = supplier.get();
+					nextSet = true;
+				}
+				return next != null;
+			}
+
+			@Override
+			public X next() {
+				nextSet = false;
+				return next;
+			}
+		};
+		return Streams.stream(it);
+	}
+
 	private record BatchSpliterator<E>(Spliterator<E> base, int batchSize) implements Spliterator<List<E>> {
 
 		@Override

src/main/java/module-info.java

@@ -19,6 +19,7 @@ module dbengine {
 	exports it.cavallium.dbengine.utils;
 	exports it.cavallium.dbengine.database.disk.rocksdb;
 	exports it.cavallium.dbengine.buffers;
+	exports it.cavallium.dbengine.lucene.hugepq.search;
 	requires org.jetbrains.annotations;
 	requires com.google.common;
 	requires micrometer.core;

src/test/java/it/cavallium/dbengine/LocalTemporaryDbGenerator.java

@@ -1,131 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.client.DefaultDatabaseOptions.DEFAULT_DATABASE_OPTIONS;
-
-import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
-import it.cavallium.data.generator.nativedata.Nullableboolean;
-import it.cavallium.data.generator.nativedata.Nullabledouble;
-import it.cavallium.data.generator.nativedata.Nullableint;
-import it.cavallium.data.generator.nativedata.Nullablelong;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import it.cavallium.dbengine.client.DefaultDatabaseOptions;
-import it.cavallium.dbengine.client.IndicizerAnalyzers;
-import it.cavallium.dbengine.client.IndicizerSimilarities;
-import it.cavallium.dbengine.database.ColumnUtils;
-import it.cavallium.dbengine.database.LLKeyValueDatabase;
-import it.cavallium.dbengine.database.disk.LLLocalDatabaseConnection;
-import it.cavallium.dbengine.lucene.LuceneHacks;
-import it.cavallium.dbengine.lucene.LuceneUtils;
-import it.cavallium.dbengine.lucene.analyzer.TextFieldsAnalyzer;
-import it.cavallium.dbengine.lucene.analyzer.TextFieldsSimilarity;
-import it.cavallium.dbengine.rpc.current.data.ByteBuffersDirectory;
-import it.cavallium.dbengine.rpc.current.data.DatabaseOptions;
-import it.cavallium.dbengine.rpc.current.data.DatabaseOptionsBuilder;
-import it.cavallium.dbengine.rpc.current.data.LuceneOptions;
-import it.cavallium.dbengine.rpc.current.data.nullables.NullableFilter;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.time.Duration;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.CompletionException;
-import java.util.concurrent.atomic.AtomicInteger;
-import reactor.core.publisher.Mono;
-import reactor.core.scheduler.Schedulers;
-
-public class LocalTemporaryDbGenerator implements TemporaryDbGenerator {
-
-	private static final AtomicInteger dbId = new AtomicInteger(0);
-
-	private static final LuceneOptions LUCENE_OPTS = new LuceneOptions(Map.of(),
-			Duration.ofSeconds(5),
-			Duration.ofSeconds(5),
-			false,
-			new ByteBuffersDirectory(),
-			Nullableboolean.empty(),
-			Nullabledouble.empty(),
-			Nullableint.empty(),
-			Nullableboolean.empty(),
-			Nullableboolean.empty(),
-			true,
-			MAX_IN_MEMORY_RESULT_ENTRIES,
-			LuceneUtils.getDefaultMergePolicy()
-	);
-
-	@Override
-	public Mono<TempDb> openTempDb(TestAllocator allocator) {
-		boolean canUseNettyDirect = DbTestUtils.computeCanUseNettyDirect();
-		return Mono.defer(() -> {
-			var wrkspcPath = Path.of("/tmp/.cache/tempdb-" + dbId.incrementAndGet() + "/");
-			return Mono
-					.<LLKeyValueDatabase>fromCallable(() -> {
-						if (Files.exists(wrkspcPath)) {
-							Files.walk(wrkspcPath).sorted(Comparator.reverseOrder()).forEach(file -> {
-								try {
-									Files.delete(file);
-								} catch (IOException ex) {
-									throw new CompletionException(ex);
-								}
-							});
-						}
-						Files.createDirectories(wrkspcPath);
-						return null;
-					})
-					.subscribeOn(Schedulers.boundedElastic())
-					.then(new LLLocalDatabaseConnection(allocator.allocator(),
-							new SimpleMeterRegistry(),
-							wrkspcPath,
-							true,
-							null
-					).connect())
-					.flatMap(conn -> {
-						SwappableLuceneSearcher searcher = new SwappableLuceneSearcher();
-						var luceneHacks = new LuceneHacks(() -> searcher, () -> searcher);
-						return Mono.zip(
-										conn.getDatabase("testdb",
-												List.of(ColumnUtils.dictionary("testmap"), ColumnUtils.special("ints"), ColumnUtils.special("longs")),
-												DefaultDatabaseOptions.builder().allowNettyDirect(canUseNettyDirect).build()
-										),
-										conn.getLuceneIndex("testluceneindex1",
-												LuceneUtils.singleStructure(),
-												IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
-												IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
-												LUCENE_OPTS,
-												luceneHacks
-										),
-										conn.getLuceneIndex("testluceneindex16",
-												LuceneUtils.shardsStructure(3),
-												IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
-												IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
-												LUCENE_OPTS,
-												luceneHacks
-										),
-										Mono.just(searcher)
-								)
-								.map(tuple -> new TempDb(allocator, conn, tuple.getT1(), tuple.getT2(), tuple.getT3(), tuple.getT4(), wrkspcPath));
-					});
-		});
-	}
-
-	@Override
-	public Mono<Void> closeTempDb(TempDb tempDb) {
-		return tempDb.db().close().then(tempDb.connection().disconnect()).then(Mono.fromCallable(() -> {
-			ensureNoLeaks(tempDb.allocator().allocator(), false, false);
-			if (Files.exists(tempDb.path())) {
-				Files.walk(tempDb.path()).sorted(Comparator.reverseOrder()).forEach(file -> {
-					try {
-						Files.delete(file);
-					} catch (IOException ex) {
-						throw new CompletionException(ex);
-					}
-				});
-			}
-			return null;
-		}).subscribeOn(Schedulers.boundedElastic())).then();
-	}
-}

src/test/java/it/cavallium/dbengine/MemoryTemporaryDbGenerator.java

@@ -1,87 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
-
-import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
-import it.cavallium.data.generator.nativedata.Nullableboolean;
-import it.cavallium.data.generator.nativedata.Nullabledouble;
-import it.cavallium.data.generator.nativedata.Nullableint;
-import it.cavallium.data.generator.nativedata.Nullablelong;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import it.cavallium.dbengine.client.DefaultDatabaseOptions;
-import it.cavallium.dbengine.client.IndicizerAnalyzers;
-import it.cavallium.dbengine.client.IndicizerSimilarities;
-import it.cavallium.dbengine.database.ColumnUtils;
-import it.cavallium.dbengine.database.memory.LLMemoryDatabaseConnection;
-import it.cavallium.dbengine.lucene.LuceneHacks;
-import it.cavallium.dbengine.lucene.LuceneUtils;
-import it.cavallium.dbengine.lucene.analyzer.TextFieldsAnalyzer;
-import it.cavallium.dbengine.lucene.analyzer.TextFieldsSimilarity;
-import it.cavallium.dbengine.rpc.current.data.ByteBuffersDirectory;
-import it.cavallium.dbengine.rpc.current.data.DatabaseOptions;
-import it.cavallium.dbengine.rpc.current.data.LuceneIndexStructure;
-import it.cavallium.dbengine.rpc.current.data.LuceneOptions;
-import it.cavallium.dbengine.rpc.current.data.nullables.NullableFilter;
-import it.unimi.dsi.fastutil.ints.IntList;
-import java.time.Duration;
-import java.util.List;
-import java.util.Map;
-import reactor.core.publisher.Mono;
-
-public class MemoryTemporaryDbGenerator implements TemporaryDbGenerator {
-
-	private static final LuceneOptions LUCENE_OPTS = new LuceneOptions(Map.of(),
-			Duration.ofSeconds(5),
-			Duration.ofSeconds(5),
-			false,
-			new ByteBuffersDirectory(),
-			Nullableboolean.empty(),
-			Nullabledouble.empty(),
-			Nullableint.empty(),
-			Nullableboolean.empty(),
-			Nullableboolean.empty(),
-			false,
-			MAX_IN_MEMORY_RESULT_ENTRIES,
-			LuceneUtils.getDefaultMergePolicy()
-	);
-
-	@Override
-	public Mono<TempDb> openTempDb(TestAllocator allocator) {
-		boolean canUseNettyDirect = DbTestUtils.computeCanUseNettyDirect();
-		return Mono
-				.fromCallable(() -> new LLMemoryDatabaseConnection(allocator.allocator(), new SimpleMeterRegistry()))
-				.flatMap(conn -> {
-					SwappableLuceneSearcher searcher = new SwappableLuceneSearcher();
-					var luceneHacks = new LuceneHacks(() -> searcher, () -> searcher);
-					return Mono
-							.zip(
-									conn.getDatabase("testdb",
-											List.of(ColumnUtils.dictionary("testmap"), ColumnUtils.special("ints"), ColumnUtils.special("longs")),
-											DefaultDatabaseOptions.builder().allowNettyDirect(canUseNettyDirect).build()
-									),
-									conn.getLuceneIndex("testluceneindex1",
-											LuceneUtils.singleStructure(),
-											IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
-											IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
-											LUCENE_OPTS,
-											luceneHacks
-									),
-									conn.getLuceneIndex("testluceneindex16",
-											LuceneUtils.shardsStructure(3),
-											IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
-											IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
-											LUCENE_OPTS,
-											luceneHacks
-									),
-									Mono.just(searcher)
-							)
-							.map(tuple -> new TempDb(allocator, conn, tuple.getT1(), tuple.getT2(), tuple.getT3(), tuple.getT4(), null));
-				});
-	}
-
-	@Override
-	public Mono<Void> closeTempDb(TempDb db) {
-		return db.db().close();
-	}
-}

src/test/java/it/cavallium/dbengine/SyncUtils.java

@@ -1,40 +0,0 @@
-package it.cavallium.dbengine;
-
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-import reactor.core.scheduler.Schedulers;
-
-public class SyncUtils {
-
-	public static void run(Flux<?> publisher) {
-		publisher.subscribeOn(Schedulers.immediate()).blockLast();
-	}
-
-	public static void runVoid(Mono<Void> publisher) {
-		publisher.then().subscribeOn(Schedulers.immediate()).block();
-	}
-
-	public static <T> T run(Mono<T> publisher) {
-		return publisher.subscribeOn(Schedulers.immediate()).block();
-	}
-
-	public static <T> T run(boolean shouldFail, Mono<T> publisher) {
-		return publisher.subscribeOn(Schedulers.immediate()).transform(mono -> {
-			if (shouldFail) {
-				return mono.onErrorResume(ex -> Mono.empty());
-			} else {
-				return mono;
-			}
-		}).block();
-	}
-
-	public static void runVoid(boolean shouldFail, Mono<Void> publisher) {
-		publisher.then().subscribeOn(Schedulers.immediate()).transform(mono -> {
-			if (shouldFail) {
-				return mono.onErrorResume(ex -> Mono.empty());
-			} else {
-				return mono;
-			}
-		}).block();
-	}
-}

src/test/java/it/cavallium/dbengine/TemporaryDbGenerator.java

@@ -1,13 +0,0 @@
-package it.cavallium.dbengine;
-
-import io.netty5.buffer.BufferAllocator;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import reactor.core.publisher.Mono;
-
-public interface TemporaryDbGenerator {
-
-	Mono<TempDb> openTempDb(TestAllocator allocator);
-
-	Mono<Void> closeTempDb(TempDb db);
-}

src/test/java/it/cavallium/dbengine/TestAllocator.java

@@ -1,62 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-
-import io.netty5.buffer.Buffer;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-
-public class TestAllocator {
-
-
-	private DbTestUtils.TestAllocator allocator;
-
-	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-	}
-
-	@AfterEach
-	public void afterEach() {
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
-	}
-
-	@Test
-	public void testNoOp() {
-	}
-
-	@Test
-	public void testShouldPass() {
-		Buffer allocated = allocator.allocator().allocate(5000);
-		allocated.close();
-		ensureNoLeaks(allocator.allocator(), true, false);
-	}
-
-	@Test
-	public void testShouldFail() {
-		Buffer allocated = null;
-		try {
-			boolean failed;
-			try {
-				allocated = allocator.allocator().allocate(5000);
-				ensureNoLeaks(allocator.allocator(), true, true);
-				failed = false;
-			} catch (Exception ex) {
-				failed = true;
-			}
-			if (!failed) {
-				Assertions.fail("A leak was not detected!");
-			}
-		} finally {
-			if (allocated != null) {
-				allocated.close();
-			}
-		}
-	}
-}

src/test/java/it/cavallium/dbengine/TestAllocatorImpl.java

@@ -1,149 +0,0 @@
-package it.cavallium.dbengine;
-
-import static io.netty5.buffer.internal.InternalBufferUtils.allocatorClosedException;
-import static io.netty5.buffer.internal.InternalBufferUtils.assertValidBufferSize;
-import static io.netty5.buffer.internal.InternalBufferUtils.standardDrop;
-
-import io.netty5.buffer.AllocationType;
-import io.netty5.buffer.AllocatorControl;
-import io.netty5.buffer.Buffer;
-import io.netty5.buffer.BufferAllocator;
-import io.netty5.buffer.Drop;
-import io.netty5.buffer.MemoryManager;
-import io.netty5.buffer.StandardAllocationTypes;
-import io.netty5.buffer.pool.PooledBufferAllocator;
-import java.util.concurrent.atomic.LongAdder;
-import java.util.function.Function;
-import java.util.function.Supplier;
-
-public class TestAllocatorImpl implements BufferAllocator, AllocatorControl {
-
-	private final TestMemoryManager manager;
-	private final AllocationType allocationType = StandardAllocationTypes.ON_HEAP;
-	private volatile boolean closed;
-
-	private TestAllocatorImpl(TestMemoryManager testMemoryManager) {
-		this.manager = testMemoryManager;
-	}
-
-	public static TestAllocatorImpl create() {
-		return new TestAllocatorImpl(new TestMemoryManager(MemoryManager.instance()));
-	}
-
-	@Override
-	public boolean isPooling() {
-		return false;
-	}
-
-	@Override
-	public AllocationType getAllocationType() {
-		return allocationType;
-	}
-
-	@Override
-	public Buffer allocate(int size) {
-		if (closed) {
-			throw allocatorClosedException();
-		}
-		assertValidBufferSize(size);
-		return manager.allocateShared(this, size, standardDrop(manager), allocationType);
-	}
-
-	@Override
-	public Supplier<Buffer> constBufferSupplier(byte[] bytes) {
-		if (closed) {
-			throw allocatorClosedException();
-		}
-		Buffer constantBuffer = manager.allocateShared(
-				this, bytes.length, standardDrop(manager), allocationType);
-		constantBuffer.writeBytes(bytes).makeReadOnly();
-		return () -> manager.allocateConstChild(constantBuffer);
-	}
-
-	@Override
-	public void close() {
-		closed = true;
-	}
-
-	public long getActiveAllocations() {
-		return this.manager.getActiveAllocations();
-	}
-
-	@Override
-	public BufferAllocator getAllocator() {
-		return this;
-	}
-
-	private static class TestMemoryManager implements MemoryManager {
-
-		private final MemoryManager instance;
-		private final LongAdder activeAllocations = new LongAdder();
-
-		public TestMemoryManager(MemoryManager instance) {
-			this.instance = instance;
-		}
-
-		@Override
-		public Buffer allocateShared(AllocatorControl allocatorControl,
-				long size,
-				Function<Drop<Buffer>, Drop<Buffer>> dropDecorator,
-				AllocationType allocationType) {
-			return instance.allocateShared(allocatorControl, size, this::createDrop, allocationType);
-		}
-
-		@Override
-		public Buffer allocateConstChild(Buffer readOnlyConstParent) {
-			return instance.allocateConstChild(readOnlyConstParent);
-		}
-
-		@Override
-		public Object unwrapRecoverableMemory(Buffer buf) {
-			return instance.unwrapRecoverableMemory(buf);
-		}
-
-		@Override
-		public Buffer recoverMemory(AllocatorControl allocatorControl, Object recoverableMemory, Drop<Buffer> drop) {
-			return instance.recoverMemory(allocatorControl, recoverableMemory, drop);
-		}
-
-		@Override
-		public Object sliceMemory(Object memory, int offset, int length) {
-			return instance.sliceMemory(memory, offset, length);
-		}
-
-		@Override
-		public void clearMemory(Object o) {
-			instance.clearMemory(o);
-		}
-
-		@Override
-		public String implementationName() {
-			return instance.implementationName();
-		}
-
-		private Drop<Buffer> createDrop(Drop<Buffer> drop) {
-			activeAllocations.increment();
-			return new Drop<>() {
-				@Override
-				public void drop(Buffer obj) {
-					activeAllocations.decrement();
-					drop.drop(obj);
-				}
-
-				@Override
-				public Drop<Buffer> fork() {
-					return createDrop(drop.fork());
-				}
-
-				@Override
-				public void attach(Buffer obj) {
-					drop.attach(obj);
-				}
-			};
-		}
-
-		public long getActiveAllocations() {
-			return activeAllocations.longValue();
-		}
-	}
-}

src/test/java/it/cavallium/dbengine/TestDictionary.java

@@ -1,56 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.isCIMode;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.DbTestUtils.tempDb;
-import static it.cavallium.dbengine.DbTestUtils.tempDictionary;
-
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import it.cavallium.dbengine.database.LLDictionary;
-import it.cavallium.dbengine.database.UpdateMode;
-import java.util.Arrays;
-import java.util.stream.Stream;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
-import reactor.test.StepVerifier;
-
-public abstract class TestDictionary {
-
-	private TestAllocator allocator;
-
-	protected abstract TemporaryDbGenerator getTempDbGenerator();
-
-	private static Stream<Arguments> provideArgumentsCreate() {
-		return Arrays.stream(UpdateMode.values()).map(Arguments::of);
-	}
-
-	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-	}
-
-	@AfterEach
-	public void afterEach() {
-		if (!isCIMode()) {
-			ensureNoLeaks(allocator.allocator(), true, false);
-		}
-		destroyAllocator(allocator);
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArgumentsCreate")
-	public void testCreate(UpdateMode updateMode) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempDictionary(db, updateMode)
-						.flatMap(LLDictionary::clear)
-						.then()
-				))
-				.verifyComplete();
-	}
-}

src/test/java/it/cavallium/dbengine/TestHugePq.java

@@ -1,157 +0,0 @@
-package it.cavallium.dbengine;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import io.netty5.buffer.Buffer;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
-import it.cavallium.dbengine.lucene.HugePqCodec;
-import it.cavallium.dbengine.lucene.HugePqPriorityQueue;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.concurrent.ThreadLocalRandom;
-import java.util.function.Function;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-
-public class TestHugePq {
-
-	private LLTempHugePqEnv env;
-	private HugePqPriorityQueue<Integer> queue;
-
-	@BeforeEach
-	public void beforeEach() throws IOException {
-		this.env = new LLTempHugePqEnv();
-		this.queue = new HugePqPriorityQueue<>(env, new HugePqCodec<Integer>() {
-			@Override
-			public Buffer serialize(Function<Integer, Buffer> allocator, Integer data) {
-				var buf = allocator.apply(Integer.BYTES);
-				HugePqCodec.setLexInt(buf, 0, false, data);
-				return buf.writerOffset(Integer.BYTES);
-			}
-
-			@Override
-			public Integer deserialize(Buffer b) {
-				return HugePqCodec.getLexInt(b, 0, false);
-			}
-		});
-	}
-
-	@Test
-	public void testNoOp() {
-
-	}
-
-	@Test
-	public void testEmptyTop() {
-		Assertions.assertNull(queue.top());
-	}
-
-	@Test
-	public void testAddSingle() {
-		queue.add(2);
-		Assertions.assertEquals(2, queue.top());
-	}
-
-	@Test
-	public void testAddSame() {
-		queue.add(2);
-		queue.add(2);
-		Assertions.assertEquals(2, queue.top());
-		Assertions.assertEquals(2, queue.size());
-	}
-
-	@Test
-	public void testAddMulti() {
-		for (int i = 0; i < 1000; i++) {
-			queue.add(i);
-		}
-		Assertions.assertEquals(0, queue.top());
-	}
-
-	@Test
-	public void testAddRandomMulti() {
-		var list = new ArrayList<Integer>(1000);
-		for (int i = 0; i < 1000; i++) {
-			var n = ThreadLocalRandom.current().nextInt(-20, 20);
-			queue.add(n);
-			list.add(n);
-		}
-		list.sort(Comparator.reverseOrder());
-		for (int i = 0; i < 1000; i++) {
-			Assertions.assertEquals(list.remove(list.size() - 1), queue.pop());
-		}
-	}
-
-	@Test
-	public void testAddMultiClear() {
-		for (int i = 0; i < 1000; i++) {
-			queue.add(i);
-		}
-		queue.clear();
-		Assertions.assertNull(queue.top());
-	}
-
-	@Test
-	public void testAddRemove() {
-		queue.add(0);
-		queue.remove(0);
-		Assertions.assertNull(queue.top());
-	}
-
-	@Test
-	public void testAddRemoveNonexistent() {
-		queue.add(0);
-		queue.remove(1);
-		Assertions.assertEquals(0, queue.top());
-	}
-
-	@Test
-	public void testAddMultiSameRemove() {
-		queue.add(0);
-		queue.add(0);
-		queue.add(1);
-		queue.remove(0);
-		Assertions.assertEquals(2, queue.size());
-		Assertions.assertEquals(0, queue.top());
-	}
-
-	@Test
-	public void testAddMultiRemove() {
-		for (int i = 0; i < 1000; i++) {
-			queue.add(i);
-		}
-		queue.remove(0);
-		Assertions.assertEquals(1, queue.top());
-	}
-
-	@Test
-	public void testSort() {
-		var sortedNumbers = new ArrayList<Integer>();
-		for (int i = 0; i < 1000; i++) {
-			sortedNumbers.add(i);
-		}
-		var shuffledNumbers = new ArrayList<>(sortedNumbers);
-		Collections.shuffle(shuffledNumbers);
-		for (Integer number : shuffledNumbers) {
-			queue.add(number);
-		}
-
-		var newSortedNumbers = new ArrayList<>();
-		Integer popped;
-		while ((popped = queue.pop()) != null) {
-			newSortedNumbers.add(popped);
-		}
-
-		Assertions.assertEquals(sortedNumbers, newSortedNumbers);
-	}
-
-	@AfterEach
-	public void afterEach() throws IOException {
-		queue.close();
-		env.close();
-	}
-}

src/test/java/it/cavallium/dbengine/TestHugePqHitQueue.java

@@ -1,381 +0,0 @@
-package it.cavallium.dbengine;
-
-import com.google.common.collect.Lists;
-import io.netty5.buffer.Buffer;
-import it.cavallium.dbengine.database.SafeCloseable;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
-import it.cavallium.dbengine.lucene.LLScoreDoc;
-import it.cavallium.dbengine.lucene.HugePqCodec;
-import it.cavallium.dbengine.lucene.HugePqPriorityQueue;
-import it.cavallium.dbengine.lucene.PriorityQueue;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Random;
-import java.util.concurrent.ThreadLocalRandom;
-import java.util.function.Function;
-import org.apache.lucene.search.HitQueue;
-import org.apache.lucene.search.ScoreDoc;
-import org.assertj.core.description.Description;
-import org.assertj.core.description.TextDescription;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import reactor.core.publisher.Flux;
-
-public class TestHugePqHitQueue {
-
-	public static final int NUM_HITS = 1024;
-
-	private LLTempHugePqEnv env;
-	private SafeCloseable hugePqQueue;
-
-	private TestingPriorityQueue testingPriorityQueue;
-
-	protected static boolean lessThan(ScoreDoc hitA, ScoreDoc hitB) {
-		if (hitA.score == hitB.score) {
-			return hitA.doc > hitB.doc;
-		} else {
-			return hitA.score < hitB.score;
-		}
-	}
-
-	private static int compareScoreDoc(ScoreDoc hitA, ScoreDoc hitB) {
-		if (hitA.score == hitB.score) {
-			if (hitA.doc == hitB.doc) {
-				return Integer.compare(hitA.shardIndex, hitB.shardIndex);
-			} else {
-				return Integer.compare(hitB.doc, hitA.doc);
-			}
-		} else {
-			return Float.compare(hitA.score, hitB.score);
-		}
-	}
-
-	private static void assertEqualsScoreDoc(Description description, ScoreDoc expected, ScoreDoc actual) {
-		org.assertj.core.api.Assertions.assertThat(toLLScoreDoc(expected)).as(description).isEqualTo(toLLScoreDoc(actual));
-	}
-
-	private static void assertEqualsScoreDoc(List<ScoreDoc> expected, List<ScoreDoc> actual) {
-		var list1 = expected.iterator();
-		var list2 = actual.iterator();
-		Assertions.assertEquals(expected.size(), actual.size());
-		while (list1.hasNext() && list2.hasNext()) {
-			Assertions.assertFalse(lessThan(list1.next(), list2.next()));
-		}
-	}
-
-	@BeforeEach
-	public void beforeEach() throws IOException {
-		this.env = new LLTempHugePqEnv();
-		var hugePqQueue = new HugePqPriorityQueue<ScoreDoc>(env, new HugePqCodec<>() {
-
-			@Override
-			public Buffer serialize(Function<Integer, Buffer> allocator, ScoreDoc data) {
-				var buf = allocator.apply(Float.BYTES + Integer.BYTES + Integer.BYTES);
-				buf.writerOffset(Float.BYTES + Integer.BYTES + Integer.BYTES);
-				setScore(buf, data.score);
-				setDoc(buf, data.doc);
-				setShardIndex(buf, data.shardIndex);
-				return buf;
-			}
-
-			@Override
-			public ScoreDoc deserialize(Buffer buf) {
-				return new ScoreDoc(getDoc(buf), getScore(buf), getShardIndex(buf));
-			}
-
-			private static float getScore(Buffer hit) {
-				return HugePqCodec.getLexFloat(hit, 0, false);
-			}
-
-			private static int getDoc(Buffer hit) {
-				return HugePqCodec.getLexInt(hit, Float.BYTES, true);
-			}
-
-			private static int getShardIndex(Buffer hit) {
-				return HugePqCodec.getLexInt(hit, Float.BYTES + Integer.BYTES, false);
-			}
-
-			private static void setScore(Buffer hit, float score) {
-				HugePqCodec.setLexFloat(hit, 0, false, score);
-			}
-
-			private static void setDoc(Buffer hit, int doc) {
-				HugePqCodec.setLexInt(hit, Float.BYTES, true, doc);
-			}
-
-			private static void setShardIndex(Buffer hit, int shardIndex) {
-				HugePqCodec.setLexInt(hit, Float.BYTES + Integer.BYTES, false, shardIndex);
-			}
-
-			@Override
-			public ScoreDoc clone(ScoreDoc obj) {
-				return new ScoreDoc(obj.doc, obj.score, obj.shardIndex);
-			}
-		});
-		this.hugePqQueue = hugePqQueue;
-		PriorityQueueAdaptor<ScoreDoc> hitQueue = new PriorityQueueAdaptor<>(new HitQueue(NUM_HITS, false));
-		Assertions.assertEquals(0, hugePqQueue.size());
-		Assertions.assertEquals(0, hitQueue.size());
-		this.testingPriorityQueue = new TestingPriorityQueue(hitQueue, hugePqQueue);
-	}
-
-	@Test
-	public void testNoOp() {
-
-	}
-
-	@Test
-	public void testEmptyTop() {
-		Assertions.assertNull(testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddSingle() {
-		var item = new ScoreDoc(0, 0, 0);
-		testingPriorityQueue.add(item);
-		assertEqualsScoreDoc(new TextDescription("top value of %s", testingPriorityQueue), item, testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddMulti() {
-		for (int i = 0; i < 1000; i++) {
-			var item = new ScoreDoc(i, i >> 1, -1);
-			testingPriorityQueue.addUnsafe(item);
-		}
-		assertEqualsScoreDoc(new TextDescription("top value of %s", testingPriorityQueue), new ScoreDoc(1, 0, -1), testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddMultiRandom() {
-		var list = new ArrayList<Integer>(1000);
-		for (int i = 0; i < 1000; i++) {
-			var ri = ThreadLocalRandom.current().nextInt(0, 20);
-			list.add(ri);
-			var item = new ScoreDoc(ri, ri << 1, ri % 4);
-			testingPriorityQueue.addUnsafe(item);
-		}
-		list.sort(Comparator.reverseOrder());
-		for (int i = 0; i < 1000; i++) {
-			var top = list.remove(list.size() - 1);
-			assertEqualsScoreDoc(new TextDescription("%d value of %s", i, testingPriorityQueue), new ScoreDoc(top, top << 1, top % 4), testingPriorityQueue.pop());
-		}
-	}
-
-	@Test
-	public void testAddMultiClear() {
-		for (int i = 0; i < 1000; i++) {
-			var item = new ScoreDoc(i, i >> 1, -1);
-			testingPriorityQueue.addUnsafe(item);
-		}
-		testingPriorityQueue.clear();
-		Assertions.assertNull(testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddRemove() {
-		var item = new ScoreDoc(0, 0, -1);
-		testingPriorityQueue.add(item);
-		testingPriorityQueue.remove(item);
-		Assertions.assertNull(testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddRemoveNonexistent() {
-		var item = new ScoreDoc(0, 0, 0);
-		testingPriorityQueue.addUnsafe(item);
-		testingPriorityQueue.remove(new ScoreDoc(2, 0, 0));
-		assertEqualsScoreDoc(new TextDescription("top value of %s", testingPriorityQueue), item, testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddMultiRemove1() {
-		ScoreDoc toRemove = null;
-		ScoreDoc top = null;
-		for (int i = 0; i < 1000; i++) {
-			var item = new ScoreDoc(i, i >> 1, -1);
-			if (i == 1) {
-				toRemove = item;
-			} else if (i == 0) {
-				top = item;
-			}
-			testingPriorityQueue.addUnsafe(item);
-		}
-		testingPriorityQueue.removeUnsafe(toRemove);
-		assertEqualsScoreDoc(new TextDescription("top value of %s", testingPriorityQueue), top, testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testAddMultiRemove2() {
-		ScoreDoc toRemove = null;
-		ScoreDoc top = null;
-		for (int i = 0; i < 1000; i++) {
-			var item = new ScoreDoc(i, i >> 1, -1);
-			if (i == 0) {
-				toRemove = item;
-			} else if (i == 1) {
-				top = item;
-			}
-			testingPriorityQueue.addUnsafe(item);
-		}
-		testingPriorityQueue.removeUnsafe(new ScoreDoc(0, 0, -1));
-		assertEqualsScoreDoc(new TextDescription("top value of %s", testingPriorityQueue), top, testingPriorityQueue.top());
-	}
-
-	@Test
-	public void testSort() {
-		var sortedNumbers = new ArrayList<ScoreDoc>();
-		for (int i = 0; i < 1000; i++) {
-			sortedNumbers.add(new ScoreDoc(i, i >> 1, -1));
-		}
-		sortedNumbers.sort(TestHugePqHitQueue::compareScoreDoc);
-		var shuffledNumbers = new ArrayList<>(sortedNumbers);
-		Collections.shuffle(shuffledNumbers, new Random(1000));
-
-		org.assertj.core.api.Assertions.assertThat(testingPriorityQueue.size()).isEqualTo(0);
-
-		for (ScoreDoc scoreDoc : shuffledNumbers) {
-			testingPriorityQueue.addUnsafe(scoreDoc);
-		}
-
-		org.assertj.core.api.Assertions.assertThat(testingPriorityQueue.size()).isEqualTo(sortedNumbers.size());
-
-		var newSortedNumbers = new ArrayList<ScoreDoc>();
-		ScoreDoc popped;
-		while ((popped = testingPriorityQueue.popUnsafe()) != null) {
-			newSortedNumbers.add(popped);
-		}
-		org.assertj.core.api.Assertions.assertThat(testingPriorityQueue.size()).isEqualTo(0);
-
-		assertEqualsScoreDoc(sortedNumbers, newSortedNumbers);
-	}
-
-	@AfterEach
-	public void afterEach() throws IOException {
-		hugePqQueue.close();
-		env.close();
-	}
-
-	private static class TestingPriorityQueue implements PriorityQueue<ScoreDoc> {
-
-		private final PriorityQueue<ScoreDoc> referenceQueue;
-		private final PriorityQueue<ScoreDoc> myQueue;
-
-		public TestingPriorityQueue(PriorityQueue<ScoreDoc> referenceQueue, PriorityQueue<ScoreDoc> myQueue) {
-			this.referenceQueue = referenceQueue;
-			this.myQueue = myQueue;
-		}
-
-		@Override
-		public void add(ScoreDoc element) {
-			referenceQueue.add(element);
-			myQueue.add(element);
-			ensureEquality();
-		}
-
-		public void addUnsafe(ScoreDoc element) {
-			referenceQueue.add(element);
-			myQueue.add(element);
-		}
-
-		@Override
-		public ScoreDoc top() {
-			var top1 = referenceQueue.top();
-			var top2 = myQueue.top();
-			assertEqualsScoreDoc(new TextDescription("top value of %s", myQueue), top1, top2);
-			return top2;
-		}
-
-		public ScoreDoc topUnsafe() {
-			var top1 = referenceQueue.top();
-			var top2 = myQueue.top();
-			return top2;
-		}
-
-		@Override
-		public ScoreDoc pop() {
-			var top1 = referenceQueue.pop();
-			var top2 = myQueue.pop();
-			assertEqualsScoreDoc(new TextDescription("top value of %s", myQueue), top1, top2);
-			return top2;
-		}
-
-		public ScoreDoc popUnsafe() {
-			var top1 = referenceQueue.pop();
-			var top2 = myQueue.pop();
-			return top2;
-		}
-
-		@Override
-		public void replaceTop(ScoreDoc oldTop, ScoreDoc newTop) {
-			referenceQueue.replaceTop(oldTop, newTop);
-			myQueue.replaceTop(oldTop, newTop);
-		}
-
-		@Override
-		public long size() {
-			var size1 = referenceQueue.size();
-			var size2 = myQueue.size();
-			Assertions.assertEquals(size1, size2);
-			return size2;
-		}
-
-		@Override
-		public void clear() {
-			referenceQueue.clear();
-			myQueue.clear();
-		}
-
-		@Override
-		public boolean remove(ScoreDoc element) {
-			var removedRef = referenceQueue.remove(element);
-			var removedMy = myQueue.remove(element);
-			Assertions.assertEquals(removedRef, removedMy);
-			return removedMy;
-		}
-
-		public boolean  removeUnsafe(ScoreDoc element) {
-			var removed1 = referenceQueue.remove(element);
-			var removed2 = myQueue.remove(element);
-			return removed2;
-		}
-
-		@Override
-		public Flux<ScoreDoc> iterate() {
-			//noinspection BlockingMethodInNonBlockingContext
-			var it1 = referenceQueue.iterate().collectList().blockOptional().orElseThrow();
-			//noinspection BlockingMethodInNonBlockingContext
-			var it2 = myQueue.iterate().collectList().blockOptional().orElseThrow();
-			assertEqualsScoreDoc(it1, it2);
-			return Flux.fromIterable(it2);
-		}
-
-		@Override
-		public void close() {
-			referenceQueue.close();
-			myQueue.close();
-		}
-
-		private void ensureEquality() {
-			Assertions.assertEquals(referenceQueue.size(), myQueue.size());
-			var referenceQueueElements = Lists.newArrayList(referenceQueue
-					.iterate()
-					.map(TestHugePqHitQueue::toLLScoreDoc)
-					.toIterable());
-			var testQueueElements = Lists.newArrayList(myQueue
-					.iterate()
-					.map(TestHugePqHitQueue::toLLScoreDoc)
-					.toIterable());
-			Assertions.assertEquals(referenceQueueElements, testQueueElements);
-		}
-	}
-
-	public static LLScoreDoc toLLScoreDoc(ScoreDoc scoreDoc) {
-		if (scoreDoc == null) return null;
-		return new LLScoreDoc(scoreDoc.doc, scoreDoc.score, scoreDoc.shardIndex);
-	}
-}

src/test/java/it/cavallium/dbengine/TestLLDictionary.java

@@ -1,283 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.SyncUtils.run;
-import static it.cavallium.dbengine.SyncUtils.runVoid;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import io.netty5.buffer.Buffer;
-import io.netty5.util.Resource;
-import io.netty5.util.Send;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import it.cavallium.dbengine.database.LLDictionary;
-import it.cavallium.dbengine.database.LLDictionaryResultType;
-import it.cavallium.dbengine.database.LLKeyValueDatabase;
-import it.cavallium.dbengine.database.LLRange;
-import it.cavallium.dbengine.database.LLUtils;
-import it.cavallium.dbengine.database.UpdateMode;
-import it.cavallium.dbengine.database.UpdateReturnMode;
-import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
-import java.util.Objects;
-import java.util.stream.Stream;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Mono;
-
-public abstract class TestLLDictionary {
-
-	private final Logger log = LogManager.getLogger(this.getClass());
-	private static final Mono<LLRange> RANGE_ALL = Mono.fromCallable(LLRange::all);
-	private TestAllocator allocator;
-	private TempDb tempDb;
-	private LLKeyValueDatabase db;
-
-	protected abstract TemporaryDbGenerator getTempDbGenerator();
-
-	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(allocator).block(), "TempDB");
-		db = tempDb.db();
-	}
-
-	@AfterEach
-	public void afterEach() {
-		getTempDbGenerator().closeTempDb(tempDb).block();
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
-	}
-
-	public static Stream<Arguments> provideArguments() {
-		return Arrays.stream(UpdateMode.values()).map(Arguments::of);
-	}
-
-	public static Stream<Arguments> providePutArguments() {
-		var updateModes = Arrays.stream(UpdateMode.values());
-		return updateModes.flatMap(updateMode -> {
-			var resultTypes = Arrays.stream(LLDictionaryResultType.values());
-			return resultTypes.map(resultType -> Arguments.of(updateMode, resultType));
-		});
-	}
-
-	public static Stream<Arguments> provideUpdateArguments() {
-		var updateModes = Arrays.stream(UpdateMode.values());
-		return updateModes.flatMap(updateMode -> {
-			var resultTypes = Arrays.stream(UpdateReturnMode.values());
-			return resultTypes.map(resultType -> Arguments.of(updateMode, resultType));
-		});
-	}
-
-	private LLDictionary getDict(UpdateMode updateMode) {
-		var dict = DbTestUtils.tempDictionary(db, updateMode).blockOptional().orElseThrow();
-		var key1 = Mono.fromCallable(() -> fromString("test-key-1"));
-		var key2 = Mono.fromCallable(() -> fromString("test-key-2"));
-		var key3 = Mono.fromCallable(() -> fromString("test-key-3"));
-		var key4 = Mono.fromCallable(() -> fromString("test-key-4"));
-		var value = Mono.fromCallable(() -> fromString("test-value"));
-		dict.put(key1, value, LLDictionaryResultType.VOID).block();
-		dict.put(key2, value, LLDictionaryResultType.VOID).block();
-		dict.put(key3, value, LLDictionaryResultType.VOID).block();
-		dict.put(key4, value, LLDictionaryResultType.VOID).block();
-		return dict;
-	}
-
-	private Buffer fromString(String s) {
-		var sb = s.getBytes(StandardCharsets.UTF_8);
-		try (var b = db.getAllocator().allocate(sb.length + 3 + 13)) {
-			assert b.writerOffset() == 0;
-			assert b.readerOffset() == 0;
-			b.writerOffset(3).writeBytes(sb);
-			b.readerOffset(3);
-			assert b.readableBytes() == sb.length;
-
-			var part1 = b.split();
-
-			return LLUtils.compositeBuffer(db.getAllocator(), part1.send(), b.send());
-		}
-	}
-
-	private String toString(Buffer bb) {
-		try (bb) {
-			byte[] data = new byte[bb.readableBytes()];
-			bb.copyInto(bb.readerOffset(), data, 0, data.length);
-			return new String(data, StandardCharsets.UTF_8);
-		}
-	}
-
-	@Test
-	public void testNoOp() {
-	}
-
-	@Test
-	public void testNoOpAllocation() {
-		for (int i = 0; i < 10; i++) {
-			var a = allocator.allocator().allocate(i * 512);
-			a.send().receive().close();
-		}
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGetDict(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		Assertions.assertNotNull(dict);
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGetColumnName(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		Assertions.assertEquals("hash_map_testmap", dict.getColumnName());
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGetAllocator(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		var alloc = dict.getAllocator();
-		Assertions.assertEquals(alloc, alloc);
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGet(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		var keyEx = Mono.fromCallable(() -> fromString("test-key-1"));
-		var keyNonEx = Mono.fromCallable(() -> fromString("test-nonexistent"));
-		Assertions.assertEquals("test-value", run(dict.get(null, keyEx).map(this::toString)));
-		Assertions.assertEquals("test-value", run(dict.get(null, keyEx).map(this::toString)));
-		Assertions.assertEquals("test-value", run(dict.get(null, keyEx).map(this::toString)));
-		Assertions.assertEquals((String) null, run(dict.get(null, keyNonEx).map(this::toString)));
-		Assertions.assertEquals((String) null, run(dict.get(null, keyNonEx).map(this::toString)));
-		Assertions.assertEquals((String) null, run(dict.get(null, keyNonEx).map(this::toString)));
-	}
-
-	@ParameterizedTest
-	@MethodSource("providePutArguments")
-	public void testPutExisting(UpdateMode updateMode, LLDictionaryResultType resultType) {
-		var dict = getDict(updateMode);
-		var keyEx = Mono.fromCallable(() -> fromString("test-key-1"));
-		var value = Mono.fromCallable(() -> fromString("test-value"));
-
-		var beforeSize = run(dict.sizeRange(null, RANGE_ALL, false));
-
-		runVoid(dict.put(keyEx, value, resultType).then().doOnDiscard(Resource.class, Resource::close));
-
-		var afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		Assertions.assertEquals(0, afterSize - beforeSize);
-	}
-
-	@ParameterizedTest
-	@MethodSource("providePutArguments")
-	public void testPutNew(UpdateMode updateMode, LLDictionaryResultType resultType) {
-		var dict = getDict(updateMode);
-		var keyNonEx = Mono.fromCallable(() -> fromString("test-nonexistent"));
-		var value = Mono.fromCallable(() -> fromString("test-value"));
-
-		var beforeSize = run(dict.sizeRange(null, RANGE_ALL, false));
-
-		runVoid(dict.put(keyNonEx, value, resultType).then().doOnDiscard(Resource.class, Resource::close));
-
-		var afterSize = run(dict.sizeRange(null, Mono.fromCallable(LLRange::all), false));
-		Assertions.assertEquals(1, afterSize - beforeSize);
-
-		Assertions.assertTrue(run(dict.getRangeKeys(null, RANGE_ALL, false, false).map(this::toString).collectList()).contains("test-nonexistent"));
-		Assertions.assertTrue(run(dict.getRangeKeys(null, RANGE_ALL, true, false).map(this::toString).collectList()).contains("test-nonexistent"));
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGetUpdateMode(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		assertEquals(updateMode, dict.getUpdateMode());
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideUpdateArguments")
-	public void testUpdateExisting(UpdateMode updateMode, UpdateReturnMode updateReturnMode) {
-		var dict = getDict(updateMode);
-		var keyEx = Mono.fromCallable(() -> fromString("test-key-1"));
-		var beforeSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		long afterSize;
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(0, afterSize - beforeSize);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(0, afterSize - beforeSize);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(0, afterSize - beforeSize);
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideUpdateArguments")
-	public void testUpdateNew(UpdateMode updateMode, UpdateReturnMode updateReturnMode) {
-		int expected = updateMode == UpdateMode.DISALLOW ? 0 : 1;
-		var dict = getDict(updateMode);
-		var keyNonEx = Mono.fromCallable(() -> fromString("test-nonexistent"));
-		var beforeSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		long afterSize;
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(expected, afterSize - beforeSize);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(expected, afterSize - beforeSize);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode).doOnNext(Resource::close).then()
-		);
-		afterSize = run(dict.sizeRange(null, RANGE_ALL, false));
-		assertEquals(expected, afterSize - beforeSize);
-
-		if (updateMode != UpdateMode.DISALLOW) {
-			Assertions.assertTrue(run(dict.getRangeKeys(null, RANGE_ALL, false, false).map(this::toString).collectList()).contains(
-					"test-nonexistent"));
-			Assertions.assertTrue(run(dict.getRangeKeys(null, RANGE_ALL, true, false).map(this::toString).collectList()).contains(
-					"test-nonexistent"));
-		}
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testUpdateAndGetDelta(UpdateMode updateMode) {
-		log.warn("Test not implemented");
-		//todo: implement
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testClear(UpdateMode updateMode) {
-		log.warn("Test not implemented");
-		//todo: implement
-	}
-
-	@ParameterizedTest
-	@MethodSource("providePutArguments")
-	public void testRemove(UpdateMode updateMode, LLDictionaryResultType resultType) {
-		log.warn("Test not implemented");
-		//todo: implement
-	}
-}

src/test/java/it/cavallium/dbengine/TestSingletons.java

@@ -1,183 +0,0 @@
-package it.cavallium.dbengine;
-
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.DbTestUtils.tempDb;
-
-import it.cavallium.data.generator.nativedata.StringSerializer;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
-import it.cavallium.dbengine.database.LLKeyValueDatabase;
-import it.cavallium.dbengine.database.LLSingleton;
-import it.cavallium.dbengine.database.collections.DatabaseInt;
-import it.cavallium.dbengine.database.collections.DatabaseLong;
-import it.cavallium.dbengine.database.collections.DatabaseSingleton;
-import it.cavallium.dbengine.database.serialization.Serializer;
-import java.util.stream.Stream;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
-import org.junit.jupiter.params.provider.ValueSource;
-import reactor.core.publisher.Mono;
-import reactor.test.StepVerifier;
-
-public abstract class TestSingletons {
-
-	private TestAllocator allocator;
-
-	protected abstract TemporaryDbGenerator getTempDbGenerator();
-
-	private static Stream<Arguments> provideNumberWithRepeats() {
-		return Stream.of(
-				Arguments.of(Integer.MIN_VALUE, 2),
-				Arguments.of(-11, 2),
-				Arguments.of(0, 3),
-				Arguments.of(102, 5)
-		);
-	}
-
-	private static Stream<Arguments> provideLongNumberWithRepeats() {
-		return Stream.of(
-				Arguments.of(Long.MIN_VALUE, 2),
-				Arguments.of(-11L, 2),
-				Arguments.of(0L, 3),
-				Arguments.of(102L, 5)
-		);
-	}
-	
-	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-	}
-
-	@AfterEach
-	public void afterEach() {
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
-	}
-
-	@Test
-	public void testCreateInteger() {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempInt(db, "test", 0)
-						.flatMap(dbInt -> dbInt.get(null))
-						.then()
-				))
-				.verifyComplete();
-	}
-
-	@Test
-	public void testCreateIntegerNoop() {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempInt(db, "test", 0)
-						.then()
-				))
-				.verifyComplete();
-	}
-
-	@Test
-	public void testCreateLong() {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempLong(db, "test", 0)
-						.flatMap(dbLong -> dbLong.get(null))
-						.then()
-				))
-				.verifyComplete();
-	}
-
-	@Test
-	public void testCreateSingleton() {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempSingleton(db, "testsingleton")
-						.flatMap(dbSingleton -> dbSingleton.get(null))
-				))
-				.verifyComplete();
-	}
-
-	@ParameterizedTest
-	@ValueSource(ints = {Integer.MIN_VALUE, -192, -2, -1, 0, 1, 2, 1292, Integer.MAX_VALUE})
-	public void testDefaultValueInteger(int i) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempInt(db, "test", i)
-						.flatMap(dbInt -> dbInt.get(null))
-				))
-				.expectNext(i)
-				.verifyComplete();
-	}
-
-	@ParameterizedTest
-	@ValueSource(longs = {Long.MIN_VALUE, -192, -2, -1, 0, 1, 2, 1292, Long.MAX_VALUE})
-	public void testDefaultValueLong(long i) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempLong(db, "test", i)
-						.flatMap(dbLong -> dbLong.get(null))
-				))
-				.expectNext(i)
-				.verifyComplete();
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideNumberWithRepeats")
-	public void testSetInteger(Integer i, Integer repeats) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempInt(db, "test", 0)
-						.flatMap(dbInt -> Mono
-								.defer(() -> dbInt.set((int) System.currentTimeMillis()))
-								.repeat(repeats)
-								.then(dbInt.set(i))
-								.then(dbInt.get(null)))
-				))
-				.expectNext(i)
-				.verifyComplete();
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideLongNumberWithRepeats")
-	public void testSetLong(Long i, Integer repeats) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempLong(db, "test", 0)
-						.flatMap(dbLong -> Mono
-								.defer(() -> dbLong.set(System.currentTimeMillis()))
-								.repeat(repeats)
-								.then(dbLong.set(i))
-								.then(dbLong.get(null)))
-				))
-				.expectNext(i)
-				.verifyComplete();
-	}
-
-	@ParameterizedTest
-	@MethodSource("provideLongNumberWithRepeats")
-	public void testSetSingleton(Long i, Integer repeats) {
-		StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempSingleton(db, "test")
-						.flatMap(dbSingleton -> Mono
-								.defer(() -> dbSingleton.set(Long.toString(System.currentTimeMillis())))
-								.repeat(repeats)
-								.then(dbSingleton.set(Long.toString(i)))
-								.then(dbSingleton.get(null)))
-				))
-				.expectNext(Long.toString(i))
-				.verifyComplete();
-	}
-
-	public static Mono<DatabaseInt> tempInt(LLKeyValueDatabase database, String name, int defaultValue) {
-		return database
-				.getInteger("ints", name, defaultValue);
-	}
-
-	public static Mono<DatabaseLong> tempLong(LLKeyValueDatabase database, String name, long defaultValue) {
-		return database
-				.getLong("longs", name, defaultValue);
-	}
-
-	public static Mono<DatabaseSingleton<String>> tempSingleton(LLKeyValueDatabase database, String name) {
-		return database
-				.getSingleton("longs", name)
-				.map(singleton -> new DatabaseSingleton<>(singleton, Serializer.UTF8_SERIALIZER));
-	}
-}

src/test/java/it/cavallium/dbengine/database/remote/QuicUtilsTest.java

@@ -1,289 +0,0 @@
-package it.cavallium.dbengine.database.remote;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-import static org.junit.jupiter.api.Assertions.fail;
-
-import io.netty.handler.ssl.ClientAuth;
-import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
-import io.netty.handler.ssl.util.SelfSignedCertificate;
-import io.netty.incubator.codec.quic.InsecureQuicTokenHandler;
-import io.netty.incubator.codec.quic.QuicConnectionIdGenerator;
-import io.netty.incubator.codec.quic.QuicSslContext;
-import io.netty.incubator.codec.quic.QuicSslContextBuilder;
-import it.cavallium.dbengine.database.remote.RPCCodecs.RPCEventCodec;
-import it.cavallium.dbengine.rpc.current.data.Empty;
-import it.cavallium.dbengine.rpc.current.data.RPCEvent;
-import it.cavallium.dbengine.rpc.current.data.SingletonGet;
-import it.cavallium.dbengine.rpc.current.data.nullables.NullableLLSnapshot;
-import java.net.InetSocketAddress;
-import java.security.cert.CertificateException;
-import java.time.Duration;
-import java.util.List;
-import java.util.logging.Level;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-import reactor.core.publisher.SignalType;
-import reactor.netty.Connection;
-import reactor.netty.incubator.quic.QuicClient;
-import reactor.netty.incubator.quic.QuicConnection;
-
-class QuicUtilsTest {
-
-	private static final int NORMAL = 0;
-	private static final int WAIT_TIME = 1;
-	private static final int FAIL_IMMEDIATELY = 2;
-	private static final int WAIT_TIME_THEN_FAIL = 3;
-
-
-	private Connection serverConn;
-	private QuicConnection clientConn;
-	private InetSocketAddress clientAddress;
-	private InetSocketAddress serverAddress;
-
-
-	@BeforeEach
-	void setUp() throws CertificateException {
-		var selfSignedCert = new SelfSignedCertificate();
-		this.clientAddress = new InetSocketAddress("localhost", 8081);
-		this.serverAddress = new InetSocketAddress("localhost", 8080);
-		QuicSslContext sslContext = QuicSslContextBuilder
-				.forServer(selfSignedCert.key(), null, selfSignedCert.cert())
-				.applicationProtocols("db/0.9")
-				.clientAuth(ClientAuth.NONE)
-				.build();
-		var qs = reactor.netty.incubator.quic.QuicServer
-				.create()
-				.tokenHandler(InsecureQuicTokenHandler.INSTANCE)
-				.bindAddress(() -> serverAddress)
-				.secure(sslContext)
-				.idleTimeout(Duration.ofSeconds(30))
-				.connectionIdAddressGenerator(QuicConnectionIdGenerator.randomGenerator())
-				.initialSettings(spec -> spec
-						.maxData(10000000)
-						.maxStreamDataBidirectionalLocal(1000000)
-						.maxStreamDataBidirectionalRemote(1000000)
-						.maxStreamsBidirectional(100)
-						.maxStreamsUnidirectional(100)
-				)
-				.handleStream((in, out) -> in
-						.withConnection(conn -> conn.addHandler(new RPCEventCodec()))
-						.receiveObject()
-						.cast(RPCEvent.class)
-						.log("recv", Level.FINEST)
-						.flatMapSequential(req -> (switch ((int) ((SingletonGet) req).singletonId()) {
-							case NORMAL -> Mono.<RPCEvent>just(Empty.of());
-							case FAIL_IMMEDIATELY -> Mono.<RPCEvent>error(new Throwable("Expected error"));
-							case WAIT_TIME -> Mono.delay(Duration.ofSeconds(3)).<RPCEvent>thenReturn(Empty.of());
-							case WAIT_TIME_THEN_FAIL -> Mono
-									.delay(Duration.ofSeconds(3))
-									.then(Mono.<RPCEvent>error(new Throwable("Expected error")));
-							default -> Mono.<RPCEvent>error(new UnsupportedOperationException("Unsupported request id " + req));
-						}).log("Server", Level.SEVERE, SignalType.ON_ERROR).onErrorResume(QuicUtils::catchRPCErrors))
-						.concatMap(message -> Mono.defer(() -> out
-								.withConnection(conn -> conn.addHandler(new RPCEventCodec()))
-								.sendObject(message)
-								.then())
-								.log("send", Level.FINEST)
-						)
-				);
-		this.serverConn = qs.bindNow();
-
-		var clientSslContext = QuicSslContextBuilder
-				.forClient()
-				.trustManager(InsecureTrustManagerFactory.INSTANCE)
-				.applicationProtocols("db/0.9")
-				.build();
-		this.clientConn = QuicClient.create()
-				.bindAddress(() -> new InetSocketAddress(0))
-				.remoteAddress(() -> serverAddress)
-				.secure(clientSslContext)
-				.idleTimeout(Duration.ofSeconds(30))
-				.initialSettings(spec -> spec
-						.maxData(10000000)
-						.maxStreamDataBidirectionalLocal(1000000)
-				)
-				.connectNow();
-	}
-
-	@AfterEach
-	void tearDown() {
-		if (clientConn != null) {
-			clientConn.disposeNow();
-		}
-		if (serverConn != null) {
-			serverConn.disposeNow();
-		}
-	}
-
-	@Test
-	void sendSimpleRequest() {
-		RPCEvent response = QuicUtils.<RPCEvent, RPCEvent>sendSimpleRequest(clientConn,
-				RPCEventCodec::new,
-				RPCEventCodec::new,
-				new SingletonGet(NORMAL, NullableLLSnapshot.empty())
-		).blockOptional().orElseThrow();
-		assertEquals(Empty.of(), response);
-	}
-
-	@Test
-	void sendSimpleRequestFlux() {
-		List<RPCEvent> results = QuicUtils.<RPCEvent, RPCEvent>sendSimpleRequestFlux(clientConn,
-				RPCEventCodec::new,
-				RPCEventCodec::new,
-				Flux.just(
-						new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-						new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-						new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-						new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-						new SingletonGet(NORMAL, NullableLLSnapshot.empty())
-				)
-		).collectList().blockOptional().orElseThrow();
-		assertEquals(5, results.size());
-		assertEquals(List.of(Empty.of(), Empty.of(), Empty.of(), Empty.of(), Empty.of()), results);
-	}
-
-	@Test
-	void sendUpdateFluxNormal() {
-		RPCEvent results = QuicUtils.<RPCEvent>sendUpdate(clientConn,
-				RPCEventCodec::new,
-				new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-				serverData -> Mono.fromCallable(() -> {
-					assertEquals(Empty.of(), serverData);
-					return new SingletonGet(NORMAL, NullableLLSnapshot.empty());
-				})
-		).blockOptional().orElseThrow();
-		assertEquals(Empty.of(), results);
-	}
-
-	@Test
-	void sendUpdateFluxSlowClient() {
-		RPCEvent results = QuicUtils.<RPCEvent>sendUpdate(clientConn,
-				RPCEventCodec::new,
-				new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-				serverData -> Mono.<RPCEvent>fromCallable(() -> {
-					assertEquals(Empty.of(), serverData);
-					return new SingletonGet(NORMAL, NullableLLSnapshot.empty());
-				}).delayElement(Duration.ofSeconds(2))
-		).blockOptional().orElseThrow();
-		assertEquals(Empty.of(), results);
-	}
-
-	@Test
-	void sendUpdateFluxSlowServer() {
-		RPCEvent results = QuicUtils.<RPCEvent>sendUpdate(clientConn,
-				RPCEventCodec::new,
-				new SingletonGet(WAIT_TIME, NullableLLSnapshot.empty()),
-				serverData -> Mono.fromCallable(() -> {
-					assertEquals(Empty.of(), serverData);
-					return new SingletonGet(WAIT_TIME, NullableLLSnapshot.empty());
-				})
-		).blockOptional().orElseThrow();
-		assertEquals(Empty.of(), results);
-	}
-
-	@Test
-	void sendUpdateFluxSlowClientAndServer() {
-		RPCEvent results = QuicUtils.<RPCEvent>sendUpdate(clientConn,
-				RPCEventCodec::new,
-				new SingletonGet(WAIT_TIME, NullableLLSnapshot.empty()),
-				serverData -> Mono.<RPCEvent>fromCallable(() -> {
-					assertEquals(Empty.of(), serverData);
-					return new SingletonGet(WAIT_TIME, NullableLLSnapshot.empty());
-				}).delayElement(Duration.ofSeconds(2))
-		).blockOptional().orElseThrow();
-		assertEquals(Empty.of(), results);
-	}
-
-	@Test
-	void sendUpdateClientFail() {
-		class ExpectedException extends Throwable {}
-
-		assertThrows(ExpectedException.class, () -> {
-			try {
-				RPCEvent results = QuicUtils
-						.<RPCEvent>sendUpdate(clientConn,
-								RPCEventCodec::new,
-								new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-								serverData -> Mono.error(new ExpectedException())
-						)
-						.blockOptional()
-						.orElseThrow();
-			} catch (Throwable e) {
-				throw e.getCause();
-			}
-		});
-	}
-
-	@Test
-	void sendUpdateServerFail1() {
-		assertThrows(RPCException.class,
-				() -> QuicUtils
-						.<RPCEvent>sendUpdate(clientConn,
-								RPCEventCodec::new,
-								new SingletonGet(FAIL_IMMEDIATELY, NullableLLSnapshot.empty()),
-								serverData -> Mono.fromCallable(() -> {
-									fail("Called update");
-									return new SingletonGet(NORMAL, NullableLLSnapshot.empty());
-								})
-						)
-						.blockOptional()
-						.orElseThrow()
-		);
-	}
-
-	@Test
-	void sendUpdateServerFail2() {
-		assertThrows(RPCException.class,
-				() -> QuicUtils
-						.<RPCEvent>sendUpdate(clientConn,
-								RPCEventCodec::new,
-								new SingletonGet(NORMAL, NullableLLSnapshot.empty()),
-								serverData -> Mono.fromCallable(() -> {
-									assertEquals(Empty.of(), serverData);
-									return new SingletonGet(FAIL_IMMEDIATELY, NullableLLSnapshot.empty());
-								})
-						)
-						.blockOptional()
-						.orElseThrow()
-		);
-	}
-
-	@Test
-	void sendSimpleRequestConcurrently() {
-		// Send the request a second time
-		var requestMono = QuicUtils.<RPCEvent, RPCEvent>sendSimpleRequest(clientConn,
-				RPCEventCodec::new,
-				RPCEventCodec::new,
-				new SingletonGet(NORMAL, NullableLLSnapshot.empty())
-		);
-		var results = Flux
-				.merge(requestMono, requestMono, requestMono, requestMono, requestMono)
-				.collectList()
-				.blockOptional()
-				.orElseThrow();
-		assertEquals(5, results.size());
-		assertEquals(List.of(Empty.of(), Empty.of(), Empty.of(), Empty.of(), Empty.of()), results);
-	}
-
-	@Test
-	void sendFailedRequest() {
-		assertThrows(RPCException.class,
-				() -> QuicUtils
-						.<RPCEvent, RPCEvent>sendSimpleRequest(clientConn,
-								RPCEventCodec::new,
-								RPCEventCodec::new,
-								new SingletonGet(FAIL_IMMEDIATELY, NullableLLSnapshot.empty())
-						)
-						.blockOptional()
-						.orElseThrow()
-		);
-	}
-
-	@Test
-	void createStream() {
-	}
-}

src/test/java/it/cavallium/dbengine/lucene/hugepq/search/HugePqFullFieldDocCollectorTest.java

@@ -1,174 +0,0 @@
-package it.cavallium.dbengine.lucene.hugepq.search;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
-import it.cavallium.dbengine.lucene.LLFieldDoc;
-import it.cavallium.dbengine.lucene.LLScoreDoc;
-import it.cavallium.dbengine.lucene.analyzer.WordAnalyzer;
-import it.cavallium.dbengine.lucene.searcher.ShardIndexSearcher;
-import it.cavallium.dbengine.lucene.searcher.SharedShardStatistics;
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.List;
-import org.apache.lucene.document.Field.Store;
-import org.apache.lucene.document.LongPoint;
-import org.apache.lucene.document.SortedNumericDocValuesField;
-import org.apache.lucene.document.SortedNumericDocValuesField;
-import org.apache.lucene.document.SortedNumericDocValuesField;
-import org.apache.lucene.document.SortedNumericDocValuesField;
-import org.apache.lucene.document.TextField;
-import org.apache.lucene.index.DirectoryReader;
-import org.apache.lucene.index.IndexWriter;
-import org.apache.lucene.index.IndexWriterConfig;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.search.FieldDoc;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.search.Sort;
-import org.apache.lucene.search.SortField;
-import org.apache.lucene.search.SortField.Type;
-import org.apache.lucene.search.SortedNumericSortField;
-import org.apache.lucene.search.TopFieldCollector;
-import org.apache.lucene.search.TopScoreDocCollector;
-import org.apache.lucene.search.TotalHits.Relation;
-import org.apache.lucene.store.ByteBuffersDirectory;
-import org.apache.lucene.util.QueryBuilder;
-import org.junit.jupiter.api.Test;
-
-public class HugePqFullFieldDocCollectorTest {
-	Sort sort = new Sort(new SortedNumericSortField("number_sort", Type.LONG));
-	Query luceneQuery = LongPoint.newRangeQuery("number", -100, 100);
-	
-	@Test
-	public void testSingleShard() throws IOException {
-		try (var dir = new ByteBuffersDirectory(); var env = new LLTempHugePqEnv()) {
-			var analyzer = new WordAnalyzer(true, true);
-			var writer = new IndexWriter(dir, new IndexWriterConfig(analyzer));
-			writer.updateDocument(new Term("id", "00"), List.of(new SortedNumericDocValuesField("number_sort", 1), new LongPoint("number", 1)));
-			writer.updateDocument(new Term("id", "01"), List.of(new SortedNumericDocValuesField("number_sort", 44), new LongPoint("number", 44)));
-			writer.updateDocument(new Term("id", "02"), List.of(new SortedNumericDocValuesField("number_sort", 203), new LongPoint("number", 203)));
-			writer.updateDocument(new Term("id", "03"), List.of(new SortedNumericDocValuesField("number_sort", 209), new LongPoint("number", 209)));
-			writer.updateDocument(new Term("id", "04"), List.of(new SortedNumericDocValuesField("number_sort", -33), new LongPoint("number", -33)));
-			writer.updateDocument(new Term("id", "05"), List.of(new SortedNumericDocValuesField("number_sort", 0), new LongPoint("number", 0)));
-			writer.updateDocument(new Term("id", "06"), List.of(new SortedNumericDocValuesField("number_sort", 933), new LongPoint("number", 933)));
-			writer.updateDocument(new Term("id", "07"), List.of(new SortedNumericDocValuesField("number_sort", 6), new LongPoint("number", 6)));
-			writer.updateDocument(new Term("id", "08"), List.of(new SortedNumericDocValuesField("number_sort", -11), new LongPoint("number", -11)));
-			writer.updateDocument(new Term("id", "09"), List.of(new SortedNumericDocValuesField("number_sort", 9996), new LongPoint("number", 9996)));
-			writer.updateDocument(new Term("id", "10"), List.of(new SortedNumericDocValuesField("number_sort", 9), new LongPoint("number", 9)));
-			writer.updateDocument(new Term("id", "11"), List.of(new SortedNumericDocValuesField("number_sort", 66), new LongPoint("number", 66)));
-			writer.updateDocument(new Term("id", "12"), List.of(new SortedNumericDocValuesField("number_sort", 88), new LongPoint("number", 88)));
-			writer.updateDocument(new Term("id", "13"), List.of(new SortedNumericDocValuesField("number_sort", 222), new LongPoint("number", 222)));
-			writer.updateDocument(new Term("id", "14"), List.of(new SortedNumericDocValuesField("number_sort", -2), new LongPoint("number", -2)));
-			writer.updateDocument(new Term("id", "15"), List.of(new SortedNumericDocValuesField("number_sort", 7), new LongPoint("number", 7)));
-			writer.updateDocument(new Term("id", "16"), List.of(new SortedNumericDocValuesField("number_sort", 1010912093), new LongPoint("number", 1010912093)));
-			writer.updateDocument(new Term("id", "17"), List.of(new SortedNumericDocValuesField("number_sort", -3894789), new LongPoint("number", -3894789)));
-			writer.updateDocument(new Term("id", "18"), List.of(new SortedNumericDocValuesField("number_sort", 122), new LongPoint("number", 122)));
-			writer.updateDocument(new Term("id", "19"), List.of(new SortedNumericDocValuesField("number_sort", 2), new LongPoint("number", 2)));
-			writer.flush();
-			writer.commit();
-			try (var reader = DirectoryReader.open(writer, true, true)) {
-				var searcher = new IndexSearcher(reader);
-				var expectedResults = searcher.search(luceneQuery, 20, sort, false);
-				var expectedTotalHits = new TotalHitsCount(expectedResults.totalHits.value, expectedResults.totalHits.relation == Relation.EQUAL_TO);
-				var expectedDocs = Arrays
-						.stream(expectedResults.scoreDocs)
-						.map(sd -> (FieldDoc) sd)
-						.map(fieldDoc -> new LLFieldDoc(fieldDoc.doc, fieldDoc.score, fieldDoc.shardIndex, Arrays.asList(fieldDoc.fields)))
-						.toList();
-				try (var collector = HugePqFullFieldDocCollector.create(env, sort, 20, Integer.MAX_VALUE)) {
-					searcher.search(luceneQuery, collector);
-					var docs = collector.fullDocs().iterate().collectList().blockOptional().orElseThrow();
-					System.out.println("Expected docs:");
-					for (var expectedDoc : expectedDocs) {
-						System.out.println(expectedDoc);
-					}
-					System.out.println("");
-					System.out.println("Obtained docs:");
-					for (var doc : docs) {
-						System.out.println(doc);
-					}
-					assertEquals(expectedDocs,
-							docs.stream().map(elem -> new LLFieldDoc(elem.doc(), elem.score(), -1, elem.fields())).toList()
-					);
-					assertEquals(expectedTotalHits, new TotalHitsCount(collector.getTotalHits(), true));
-				}
-			}
-		}
-	}
-
-	@Test
-	public void testMultiShard() throws IOException {
-		try (var dir1 = new ByteBuffersDirectory(); var dir2 = new ByteBuffersDirectory(); var env = new LLTempHugePqEnv()) {
-			var analyzer = new WordAnalyzer(true, true);
-			var writer1 = new IndexWriter(dir1, new IndexWriterConfig(analyzer));
-			var writer2 = new IndexWriter(dir2, new IndexWriterConfig(analyzer));
-			writer1.updateDocument(new Term("id", "00"), List.of(new SortedNumericDocValuesField("number_sort", 1), new LongPoint("number", 1)));
-			writer1.updateDocument(new Term("id", "01"), List.of(new SortedNumericDocValuesField("number_sort", 44), new LongPoint("number", 44)));
-			writer1.updateDocument(new Term("id", "02"), List.of(new SortedNumericDocValuesField("number_sort", 203), new LongPoint("number", 203)));
-			writer1.updateDocument(new Term("id", "03"), List.of(new SortedNumericDocValuesField("number_sort", 209), new LongPoint("number", 209)));
-			writer1.updateDocument(new Term("id", "04"), List.of(new SortedNumericDocValuesField("number_sort", -33), new LongPoint("number", -33)));
-			writer1.updateDocument(new Term("id", "05"), List.of(new SortedNumericDocValuesField("number_sort", 0), new LongPoint("number", 0)));
-			writer1.updateDocument(new Term("id", "06"), List.of(new SortedNumericDocValuesField("number_sort", 933), new LongPoint("number", 933)));
-			writer1.updateDocument(new Term("id", "07"), List.of(new SortedNumericDocValuesField("number_sort", 6), new LongPoint("number", 6)));
-			writer1.updateDocument(new Term("id", "08"), List.of(new SortedNumericDocValuesField("number_sort", -11), new LongPoint("number", -11)));
-			writer1.updateDocument(new Term("id", "09"), List.of(new SortedNumericDocValuesField("number_sort", 9996), new LongPoint("number", 9996)));
-			writer2.updateDocument(new Term("id", "10"), List.of(new SortedNumericDocValuesField("number_sort", 9), new LongPoint("number", 9)));
-			writer2.updateDocument(new Term("id", "11"), List.of(new SortedNumericDocValuesField("number_sort", 66), new LongPoint("number", 66)));
-			writer2.updateDocument(new Term("id", "12"), List.of(new SortedNumericDocValuesField("number_sort", 88), new LongPoint("number", 88)));
-			writer2.updateDocument(new Term("id", "13"), List.of(new SortedNumericDocValuesField("number_sort", 222), new LongPoint("number", 222)));
-			writer2.updateDocument(new Term("id", "14"), List.of(new SortedNumericDocValuesField("number_sort", -2), new LongPoint("number", -2)));
-			writer2.updateDocument(new Term("id", "15"), List.of(new SortedNumericDocValuesField("number_sort", 7), new LongPoint("number", 7)));
-			writer2.updateDocument(new Term("id", "16"), List.of(new SortedNumericDocValuesField("number_sort", 1010912093), new LongPoint("number", 1010912093)));
-			writer2.updateDocument(new Term("id", "17"), List.of(new SortedNumericDocValuesField("number_sort", -3894789), new LongPoint("number", -3894789)));
-			writer2.updateDocument(new Term("id", "18"), List.of(new SortedNumericDocValuesField("number_sort", 122), new LongPoint("number", 122)));
-			writer2.updateDocument(new Term("id", "19"), List.of(new SortedNumericDocValuesField("number_sort", 2), new LongPoint("number", 2)));
-			writer1.flush();
-			writer2.flush();
-			writer1.commit();
-			writer2.commit();
-			var sharedStats = new SharedShardStatistics();
-			try (var reader1 = DirectoryReader.open(writer1, true, true);
-					var reader2 = DirectoryReader.open(writer2, true, true)) {
-				var searcher1 = new IndexSearcher(reader1);
-				var searcher2 = new IndexSearcher(reader2);
-				var shardSearcher1 = new ShardIndexSearcher(sharedStats, List.of(searcher1, searcher2), 0);
-				var shardSearcher2 = new ShardIndexSearcher(sharedStats, List.of(searcher1, searcher2), 1);
-				var standardSharedManager = TopFieldCollector.createSharedManager(sort, 20, null, Integer.MAX_VALUE);
-				var standardCollector1 = standardSharedManager.newCollector();
-				var standardCollector2 = standardSharedManager.newCollector();
-				shardSearcher1.search(luceneQuery, standardCollector1);
-				shardSearcher2.search(luceneQuery, standardCollector2);
-				var expectedResults = standardSharedManager.reduce(List.of(standardCollector1, standardCollector2));
-				var expectedTotalHits = new TotalHitsCount(expectedResults.totalHits.value, expectedResults.totalHits.relation == Relation.EQUAL_TO);
-				var expectedDocs = Arrays
-						.stream(expectedResults.scoreDocs)
-						.map(sd -> (FieldDoc) sd)
-						.map(fieldDoc -> new LLFieldDoc(fieldDoc.doc, fieldDoc.score, fieldDoc.shardIndex, Arrays.asList(fieldDoc.fields)))
-						.toList();
-				var collectorManager = HugePqFullFieldDocCollector.createSharedManager(env, sort, 20, Integer.MAX_VALUE);
-				var collector1 = collectorManager.newCollector();
-				var collector2 = collectorManager.newCollector();
-				shardSearcher1.search(luceneQuery, collector1);
-				shardSearcher2.search(luceneQuery, collector2);
-				try (var results = collectorManager.reduce(List.of(collector1, collector2))) {
-					var docs = results.iterate().collectList().blockOptional().orElseThrow();
-					System.out.println("Expected docs:");
-					for (var expectedDoc : expectedDocs) {
-						System.out.println(expectedDoc);
-					}
-					System.out.println("");
-					System.out.println("Obtained docs:");
-					for (var doc : docs) {
-						System.out.println(doc);
-					}
-					assertEquals(expectedDocs,
-							docs.stream().map(elem -> new LLFieldDoc(elem.doc(), elem.score(), -1, elem.fields())).toList()
-					);
-					assertEquals(expectedTotalHits, new TotalHitsCount(results.totalHits().value, results.totalHits().relation == Relation.EQUAL_TO));
-				}
-			}
-		}
-	}
-}

src/test/java/it/cavallium/dbengine/lucene/hugepq/search/HugePqFullScoreDocCollectorTest.java

@@ -1,178 +0,0 @@
-package it.cavallium.dbengine.lucene.hugepq.search;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-import it.cavallium.dbengine.client.query.QueryUtils;
-import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
-import it.cavallium.dbengine.database.LLUtils;
-import it.cavallium.dbengine.database.disk.IndexSearcherManager;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
-import it.cavallium.dbengine.lucene.LLScoreDoc;
-import it.cavallium.dbengine.lucene.LuceneUtils;
-import it.cavallium.dbengine.lucene.analyzer.LegacyWordAnalyzer;
-import it.cavallium.dbengine.lucene.analyzer.TextFieldsAnalyzer;
-import it.cavallium.dbengine.lucene.analyzer.WordAnalyzer;
-import it.cavallium.dbengine.lucene.searcher.ShardIndexSearcher;
-import it.cavallium.dbengine.lucene.searcher.SharedShardStatistics;
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.List;
-import org.apache.lucene.document.Field.Store;
-import org.apache.lucene.document.TextField;
-import org.apache.lucene.index.DirectoryReader;
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.IndexWriter;
-import org.apache.lucene.index.IndexWriterConfig;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.search.CollectorManager;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.PhraseQuery;
-import org.apache.lucene.search.ScoreDoc;
-import org.apache.lucene.search.SearcherManager;
-import org.apache.lucene.search.SimpleCollector;
-import org.apache.lucene.search.TopDocs;
-import org.apache.lucene.search.TopDocsCollector;
-import org.apache.lucene.search.TopScoreDocCollector;
-import org.apache.lucene.search.TotalHits.Relation;
-import org.apache.lucene.store.ByteBuffersDirectory;
-import org.apache.lucene.util.QueryBuilder;
-import org.junit.jupiter.api.Test;
-
-public class HugePqFullScoreDocCollectorTest {
-
-	@Test
-	public void testSingleShard() throws IOException {
-		try (var dir = new ByteBuffersDirectory(); var env = new LLTempHugePqEnv()) {
-			var analyzer = new WordAnalyzer(true, true);
-			var writer = new IndexWriter(dir, new IndexWriterConfig(analyzer));
-			writer.updateDocument(new Term("id", "00"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "01"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "02"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "03"), List.of(new TextField("text", "Marios Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "04"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "05"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "06"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "07"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "08"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "09"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer.updateDocument(new Term("id", "10"), List.of(new TextField("text", "ROSSI UA", Store.YES)));
-			writer.updateDocument(new Term("id", "11"), List.of(new TextField("text", "Mario Barman", Store.YES)));
-			writer.updateDocument(new Term("id", "12"), List.of(new TextField("text", "Mario batman", Store.YES)));
-			writer.updateDocument(new Term("id", "13"), List.of(new TextField("text", "Admin Rossi desk", Store.YES)));
-			writer.updateDocument(new Term("id", "14"), List.of(new TextField("text", "MRI Marios bot", Store.YES)));
-			writer.updateDocument(new Term("id", "15"), List.of(new TextField("text", "Mario Rossi [beta]", Store.YES)));
-			writer.updateDocument(new Term("id", "16"), List.of(new TextField("text", "Mario Music Bot", Store.YES)));
-			writer.updateDocument(new Term("id", "17"), List.of(new TextField("text", "Mario night mode", Store.YES)));
-			writer.updateDocument(new Term("id", "18"), List.of(new TextField("text", "Mario stats bot", Store.YES)));
-			writer.updateDocument(new Term("id", "19"), List.of(new TextField("text", "Very very long text with Mario Giovanni and Rossi inside", Store.YES)));
-			writer.flush();
-			writer.commit();
-			try (var reader = DirectoryReader.open(writer, true, true)) {
-				var searcher = new IndexSearcher(reader);
-				var qb = new QueryBuilder(analyzer);
-				var luceneQuery = qb.createMinShouldMatchQuery("text", "Mario rossi", 0.3f);
-				var expectedResults = searcher.search(luceneQuery, 20);
-				var expectedTotalHits = new TotalHitsCount(expectedResults.totalHits.value, expectedResults.totalHits.relation == Relation.EQUAL_TO);
-				var expectedDocs = Arrays
-						.stream(expectedResults.scoreDocs)
-						.map(scoreDoc -> new LLScoreDoc(scoreDoc.doc, scoreDoc.score, scoreDoc.shardIndex))
-						.toList();
-				try (var collector = HugePqFullScoreDocCollector.create(env, 20)) {
-					searcher.search(luceneQuery, collector);
-					var docs = collector
-							.fullDocs()
-							.iterate()
-							.collectList()
-							.transform(LLUtils::handleDiscard)
-							.blockOptional()
-							.orElseThrow();
-					System.out.println("Expected docs:");
-					for (LLScoreDoc expectedDoc : expectedDocs) {
-						System.out.println(expectedDoc);
-					}
-					System.out.println("");
-					System.out.println("Obtained docs:");
-					for (LLScoreDoc doc : docs) {
-						System.out.println(doc);
-					}
-					assertEquals(expectedDocs, docs.stream().map(elem -> new LLScoreDoc(elem.doc(), elem.score(), -1)).toList());
-					assertEquals(expectedTotalHits, new TotalHitsCount(collector.getTotalHits(), true));
-				}
-			}
-		}
-	}
-
-	@Test
-	public void testMultiShard() throws IOException {
-		try (var dir1 = new ByteBuffersDirectory(); var dir2 = new ByteBuffersDirectory(); var env = new LLTempHugePqEnv()) {
-			var analyzer = new WordAnalyzer(true, true);
-			var writer1 = new IndexWriter(dir1, new IndexWriterConfig(analyzer));
-			var writer2 = new IndexWriter(dir2, new IndexWriterConfig(analyzer));
-			writer1.updateDocument(new Term("id", "00"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "01"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "02"), List.of(new TextField("text", "Mario Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "03"), List.of(new TextField("text", "Marios Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "04"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "05"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "06"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "07"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "08"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer1.updateDocument(new Term("id", "09"), List.of(new TextField("text", "Rossi", Store.YES)));
-			writer2.updateDocument(new Term("id", "10"), List.of(new TextField("text", "ROSSI UA", Store.YES)));
-			writer2.updateDocument(new Term("id", "11"), List.of(new TextField("text", "Mario Barman", Store.YES)));
-			writer2.updateDocument(new Term("id", "12"), List.of(new TextField("text", "Mario batman", Store.YES)));
-			writer2.updateDocument(new Term("id", "13"), List.of(new TextField("text", "Admin Rossi desk", Store.YES)));
-			writer2.updateDocument(new Term("id", "14"), List.of(new TextField("text", "MRI Marios bot", Store.YES)));
-			writer2.updateDocument(new Term("id", "15"), List.of(new TextField("text", "Mario Rossi [beta]", Store.YES)));
-			writer2.updateDocument(new Term("id", "16"), List.of(new TextField("text", "Mario Music Bot", Store.YES)));
-			writer2.updateDocument(new Term("id", "17"), List.of(new TextField("text", "Mario night mode", Store.YES)));
-			writer2.updateDocument(new Term("id", "18"), List.of(new TextField("text", "Mario stats bot", Store.YES)));
-			writer2.updateDocument(new Term("id", "19"), List.of(new TextField("text", "Very very long text with Mario Giovanni and Rossi inside", Store.YES)));
-			writer1.flush();
-			writer2.flush();
-			writer1.commit();
-			writer2.commit();
-			var sharedStats = new SharedShardStatistics();
-			try (var reader1 = DirectoryReader.open(writer1, true, true);
-					var reader2 = DirectoryReader.open(writer2, true, true)) {
-				var searcher1 = new IndexSearcher(reader1);
-				var searcher2 = new IndexSearcher(reader2);
-				var shardSearcher1 = new ShardIndexSearcher(sharedStats, List.of(searcher1, searcher2), 0);
-				var shardSearcher2 = new ShardIndexSearcher(sharedStats, List.of(searcher1, searcher2), 1);
-				var qb = new QueryBuilder(analyzer);
-				var luceneQuery = qb.createMinShouldMatchQuery("text", "Mario rossi", 0.3f);
-				var standardSharedManager = TopScoreDocCollector.createSharedManager(20, null, Integer.MAX_VALUE);
-				var standardCollector1 = standardSharedManager.newCollector();
-				var standardCollector2 = standardSharedManager.newCollector();
-				shardSearcher1.search(luceneQuery, standardCollector1);
-				shardSearcher2.search(luceneQuery, standardCollector2);
-				var expectedResults = standardSharedManager.reduce(List.of(standardCollector1, standardCollector2));
-				var expectedTotalHits = new TotalHitsCount(expectedResults.totalHits.value, expectedResults.totalHits.relation == Relation.EQUAL_TO);
-				var expectedDocs = Arrays
-						.stream(expectedResults.scoreDocs)
-						.map(scoreDoc -> new LLScoreDoc(scoreDoc.doc, scoreDoc.score, scoreDoc.shardIndex))
-						.toList();
-				var collectorManager = HugePqFullScoreDocCollector.createSharedManager(env, 20, Integer.MAX_VALUE);
-				try (var collector1 = collectorManager.newCollector();
-						var collector2 = collectorManager.newCollector()) {
-					shardSearcher1.search(luceneQuery, collector1);
-					shardSearcher2.search(luceneQuery, collector2);
-					try (var results = collectorManager.reduce(List.of(collector1, collector2))) {
-						var docs = results.iterate().collectList().blockOptional().orElseThrow();
-						System.out.println("Expected docs:");
-						for (LLScoreDoc expectedDoc : expectedDocs) {
-							System.out.println(expectedDoc);
-						}
-						System.out.println("");
-						System.out.println("Obtained docs:");
-						for (LLScoreDoc doc : docs) {
-							System.out.println(doc);
-						}
-						assertEquals(expectedDocs, docs.stream().map(elem -> new LLScoreDoc(elem.doc(), elem.score(), -1)).toList());
-						assertEquals(expectedTotalHits, new TotalHitsCount(results.totalHits().value, results.totalHits().relation == Relation.EQUAL_TO));
-					}
-				}
-			}
-		}
-	}
-}

src/test/java/it/cavallium/dbengine/tests/DbTestUtils.java

@@ -1,23 +1,17 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import io.netty5.buffer.Buffer;
-import io.netty5.buffer.MemoryManager;
-import io.netty5.buffer.internal.LeakDetection;
-import io.netty5.buffer.internal.LifecycleTracer;
-import io.netty5.buffer.pool.PoolArenaMetric;
-import io.netty5.buffer.pool.PooledBufferAllocator;
-import io.netty5.util.ResourceLeakDetector;
-import io.netty5.util.ResourceLeakDetector.Level;
-import io.netty5.util.internal.PlatformDependent;
+import io.netty.util.ResourceLeakDetector;
+import io.netty.util.ResourceLeakDetector.Level;
+import it.cavallium.dbengine.buffers.BufDataInput;
+import it.cavallium.dbengine.buffers.BufDataOutput;
 import it.cavallium.dbengine.client.LuceneIndex;
 import it.cavallium.dbengine.client.LuceneIndexImpl;
 import it.cavallium.dbengine.database.LLDatabaseConnection;
 import it.cavallium.dbengine.database.LLDictionary;
 import it.cavallium.dbengine.database.LLKeyValueDatabase;
 import it.cavallium.dbengine.database.LLLuceneIndex;
-import it.cavallium.dbengine.database.LLUtils;
 import it.cavallium.dbengine.database.UpdateMode;
 import it.cavallium.dbengine.database.collections.DatabaseMapDictionary;
 import it.cavallium.dbengine.database.collections.DatabaseMapDictionaryDeep;
@@ -26,23 +20,20 @@ import it.cavallium.dbengine.database.collections.DatabaseStageEntry;
 import it.cavallium.dbengine.database.collections.DatabaseStageMap;
 import it.cavallium.dbengine.database.collections.SubStageGetterHashMap;
 import it.cavallium.dbengine.database.collections.SubStageGetterMap;
+import it.cavallium.dbengine.database.serialization.SerializationException;
 import it.cavallium.dbengine.database.serialization.Serializer;
 import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
 import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
+import java.io.IOException;
 import java.nio.file.Path;
-import java.util.Objects;
+import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Function;
+import org.apache.lucene.util.IOSupplier;
 import org.jetbrains.annotations.NotNull;
-import org.reactivestreams.Publisher;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
+import org.junit.jupiter.api.Assertions;
 
 public class DbTestUtils {
 
-	static {
-		LLUtils.initHooks();
-	}
-
 	public static final String BIG_STRING = generateBigString();
 	public static final int MAX_IN_MEMORY_RESULT_ENTRIES = 8192;
 
@@ -50,84 +41,61 @@ public class DbTestUtils {
 		return "0123456789".repeat(1024);
 	}
 
-	public record TestAllocator(TestAllocatorImpl allocator) {}
-
-	public static TestAllocator newAllocator() {
-		return new TestAllocator(TestAllocatorImpl.create());
-	}
-
-	public static void destroyAllocator(TestAllocator testAllocator) {
-		testAllocator.allocator().close();
-	}
-
-	@SuppressWarnings("SameParameterValue")
-	private static long getActiveAllocations(TestAllocatorImpl allocator, boolean printStats) {
-		long activeAllocations = allocator.getActiveAllocations();
-		if (printStats) {
-			System.out.println("activeAllocations=" + activeAllocations);
-		}
-		return activeAllocations;
-	}
-
 	public static boolean isCIMode() {
 		return System.getProperty("dbengine.ci", "false").equalsIgnoreCase("true");
 	}
 
-	public static <U> Flux<U> tempDb(TemporaryDbGenerator temporaryDbGenerator,
-			TestAllocator alloc,
-			Function<LLKeyValueDatabase, Publisher<U>> action) {
-		return Flux.usingWhen(
-				temporaryDbGenerator.openTempDb(alloc),
-				tempDb -> Flux
-						.from(action.apply(tempDb.db()))
-						.doOnDiscard(Object.class, o -> System.out.println("Discarded: " + o.getClass().getName() + ", " + o)),
-				temporaryDbGenerator::closeTempDb
-		);
+	public static <U> U tempDb(TemporaryDbGenerator temporaryDbGenerator,
+			Function<LLKeyValueDatabase, U> action) throws IOException {
+		var tempDb = temporaryDbGenerator.openTempDb();
+		try {
+			return action.apply(tempDb.db());
+		} finally {
+			temporaryDbGenerator.closeTempDb(tempDb);
+		}
 	}
 
-	public record TempDb(TestAllocator allocator, LLDatabaseConnection connection, LLKeyValueDatabase db,
+	public static void runVoid(boolean shouldFail, Runnable consumer) {
+		if (shouldFail) {
+			Assertions.assertThrows(Throwable.class, consumer::run);
+		} else {
+			Assertions.assertDoesNotThrow(consumer::run);
+		}
+	}
+
+	public static <X> X run(boolean shouldFail, IOSupplier<X> consumer) {
+		AtomicReference<X> result = new AtomicReference<>(null);
+		if (shouldFail) {
+			Assertions.assertThrows(Throwable.class, consumer::get);
+		} else {
+			Assertions.assertDoesNotThrow(() -> result.set(consumer.get()));
+		}
+		return result.get();
+	}
+
+	public record TempDb(LLDatabaseConnection connection, LLKeyValueDatabase db,
 											 LLLuceneIndex luceneSingle,
 											 LLLuceneIndex luceneMulti,
 											 SwappableLuceneSearcher swappableLuceneSearcher,
 											 Path path) {}
 
-	static boolean computeCanUseNettyDirect() {
-		boolean canUse = true;
-		if (!PlatformDependent.hasUnsafe()) {
-			System.err.println("Warning! Unsafe is not available!"
-					+ " Netty direct buffers will not be used in tests!");
-			canUse = false;
-		}
-		return canUse;
-	}
-
-	public static void ensureNoLeaks(TestAllocatorImpl allocator, boolean printStats, boolean useClassicException) {
+	public static void ensureNoLeaks(boolean printStats, boolean useClassicException) {
 		ResourceLeakDetector.setLevel(Level.PARANOID);
 		System.gc();
-		if (allocator != null) {
-			var allocs = getActiveAllocations(allocator, printStats);
-			if (useClassicException) {
-				if (allocs != 0) {
-					throw new IllegalStateException("Active allocations: " + allocs);
-				}
-			} else {
-				assertEquals(0L, allocs);
-			}
-		}
 	}
 
-	public static Mono<? extends LLDictionary> tempDictionary(LLKeyValueDatabase database, UpdateMode updateMode) {
+	public static LLDictionary tempDictionary(LLKeyValueDatabase database, UpdateMode updateMode) {
 		return tempDictionary(database, "testmap", updateMode);
 	}
 
-	public static Mono<? extends LLDictionary> tempDictionary(LLKeyValueDatabase database,
+	public static LLDictionary tempDictionary(LLKeyValueDatabase database,
 			String name,
 			UpdateMode updateMode) {
 		return database.getDictionary(name, updateMode);
 	}
 
-	public static Mono<? extends LuceneIndex<String, String>> tempLuceneIndex(LLLuceneIndex index) {
-		return Mono.fromCallable(() -> new LuceneIndexImpl<>(index, new StringIndicizer()));
+	public static LuceneIndex<String, String> tempLuceneIndex(LLLuceneIndex index) {
+		return new LuceneIndexImpl<>(index, new StringIndicizer());
 	}
 
 
@@ -157,14 +125,13 @@ public class DbTestUtils {
 						}
 
 						@Override
-						public @NotNull Short deserialize(@NotNull Buffer serialized) {
-							Objects.requireNonNull(serialized);
-							return serialized.readShort();
+						public @NotNull Short deserialize(@NotNull BufDataInput in) throws SerializationException {
+							return in.readShort();
 						}
 
 						@Override
-						public void serialize(@NotNull Short deserialized, Buffer output) {
-							output.writeShort(deserialized);
+						public void serialize(@NotNull Short deserialized, BufDataOutput out) throws SerializationException {
+							out.writeShort(deserialized);
 						}
 					}
 			);
@@ -195,7 +162,7 @@ public class DbTestUtils {
 				new SubStageGetterHashMap<>(Serializer.UTF8_SERIALIZER,
 						Serializer.UTF8_SERIALIZER,
 						String::hashCode,
-						SerializerFixedBinaryLength.intSerializer(dictionary.getAllocator())
+						SerializerFixedBinaryLength.intSerializer()
 				)
 		);
 	}
@@ -206,7 +173,7 @@ public class DbTestUtils {
 				Serializer.UTF8_SERIALIZER,
 				Serializer.UTF8_SERIALIZER,
 				String::hashCode,
-				SerializerFixedBinaryLength.intSerializer(dictionary.getAllocator())
+				SerializerFixedBinaryLength.intSerializer()
 		);
 	}
 }

src/test/java/it/cavallium/dbengine/tests/ExpectedQueryType.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import it.cavallium.dbengine.client.Sort;
 import it.cavallium.dbengine.client.query.BaseType;

src/test/java/it/cavallium/dbengine/tests/LocalTemporaryDbGenerator.java

@@ -0,0 +1,113 @@
+package it.cavallium.dbengine.tests;
+
+import static it.cavallium.dbengine.tests.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import it.cavallium.data.generator.nativedata.Nullableboolean;
+import it.cavallium.data.generator.nativedata.Nullabledouble;
+import it.cavallium.data.generator.nativedata.Nullableint;
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.client.DefaultDatabaseOptions;
+import it.cavallium.dbengine.client.IndicizerAnalyzers;
+import it.cavallium.dbengine.client.IndicizerSimilarities;
+import it.cavallium.dbengine.database.ColumnUtils;
+import it.cavallium.dbengine.database.LLDatabaseConnection;
+import it.cavallium.dbengine.database.disk.LLLocalDatabaseConnection;
+import it.cavallium.dbengine.lucene.LuceneHacks;
+import it.cavallium.dbengine.lucene.LuceneUtils;
+import it.cavallium.dbengine.lucene.analyzer.TextFieldsAnalyzer;
+import it.cavallium.dbengine.lucene.analyzer.TextFieldsSimilarity;
+import it.cavallium.dbengine.rpc.current.data.ByteBuffersDirectory;
+import it.cavallium.dbengine.rpc.current.data.LuceneOptions;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class LocalTemporaryDbGenerator implements TemporaryDbGenerator {
+
+	private static final AtomicInteger dbId = new AtomicInteger(0);
+
+	private static final LuceneOptions LUCENE_OPTS = new LuceneOptions(Map.of(),
+			Duration.ofSeconds(5),
+			Duration.ofSeconds(5),
+			false,
+			new ByteBuffersDirectory(),
+			Nullableboolean.empty(),
+			Nullabledouble.empty(),
+			Nullableint.empty(),
+			Nullableboolean.empty(),
+			Nullableboolean.empty(),
+			MAX_IN_MEMORY_RESULT_ENTRIES,
+			LuceneUtils.getDefaultMergePolicy()
+	);
+
+	@Override
+	public TempDb openTempDb() throws IOException {
+		var wrkspcPath = Path.of("/tmp/.cache/tempdb-" + dbId.incrementAndGet() + "/");
+
+		if (Files.exists(wrkspcPath)) {
+			Files.walk(wrkspcPath).sorted(Comparator.reverseOrder()).forEach(file -> {
+				try {
+					Files.delete(file);
+				} catch (IOException ex) {
+					throw new CompletionException(ex);
+				}
+			});
+		}
+		Files.createDirectories(wrkspcPath);
+
+		LLDatabaseConnection conn = new LLLocalDatabaseConnection(
+				new SimpleMeterRegistry(),
+				wrkspcPath,
+				true
+		).connect();
+
+		SwappableLuceneSearcher searcher = new SwappableLuceneSearcher();
+		var luceneHacks = new LuceneHacks(() -> searcher, () -> searcher);
+		return new TempDb(conn,
+				conn.getDatabase("testdb",
+						List.of(ColumnUtils.dictionary("testmap"), ColumnUtils.special("ints"), ColumnUtils.special("longs")),
+						DefaultDatabaseOptions.builder().build()
+				),
+				conn.getLuceneIndex("testluceneindex1",
+						LuceneUtils.singleStructure(),
+						IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
+						IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
+						LUCENE_OPTS,
+						luceneHacks
+				),
+				conn.getLuceneIndex("testluceneindex16",
+						LuceneUtils.shardsStructure(3),
+						IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
+						IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
+						LUCENE_OPTS,
+						luceneHacks
+				),
+				searcher,
+				wrkspcPath
+		);
+	}
+
+	@Override
+	public void closeTempDb(TempDb tempDb) throws IOException {
+		tempDb.db().close();
+		tempDb.connection().disconnect();
+		ensureNoLeaks(false, false);
+		if (Files.exists(tempDb.path())) {
+			Files.walk(tempDb.path()).sorted(Comparator.reverseOrder()).forEach(file -> {
+				try {
+					Files.delete(file);
+				} catch (IOException ex) {
+					throw new CompletionException(ex);
+				}
+			});
+		}
+	}
+}

src/test/java/it/cavallium/dbengine/tests/LuceneGeneratorTest.java

@@ -1,6 +1,8 @@
-package it.cavallium.dbengine.lucene.searcher;
+package it.cavallium.dbengine.tests;
 
 import it.cavallium.dbengine.lucene.ExponentialPageLimits;
+import it.cavallium.dbengine.lucene.searcher.LocalQueryParams;
+import it.cavallium.dbengine.lucene.searcher.LuceneGenerator;
 import it.unimi.dsi.fastutil.longs.LongList;
 import java.io.IOException;
 import java.time.Duration;
@@ -80,7 +82,7 @@ public class LuceneGeneratorTest {
 
 		var reactiveGenerator = LuceneGenerator.reactive(is, localQueryParams, -1);
 		var results = fixResults(localQueryParams.isSorted(),
-				localQueryParams.needsScores(), reactiveGenerator.collectList().block());
+				localQueryParams.needsScores(), reactiveGenerator.toList());
 
 		Assertions.assertNotEquals(0, results.size());
 
@@ -98,7 +100,7 @@ public class LuceneGeneratorTest {
 				localQueryParams.needsScores(), List.of(is.search(query, limit).scoreDocs));
 
 		var reactiveGenerator = LuceneGenerator.reactive(is, localQueryParams, -1);
-		var results = fixResults(localQueryParams.isSorted(), localQueryParams.needsScores(), reactiveGenerator.collectList().block());
+		var results = fixResults(localQueryParams.isSorted(), localQueryParams.needsScores(), reactiveGenerator.toList());
 
 		Assertions.assertNotEquals(0, results.size());
 
@@ -123,7 +125,7 @@ public class LuceneGeneratorTest {
 				),
 				-1
 		);
-		var results = reactiveGenerator.collectList().block();
+		var results = reactiveGenerator.toList();
 
 		Assertions.assertNotNull(results);
 		Assertions.assertEquals(0, results.size());
@@ -144,7 +146,7 @@ public class LuceneGeneratorTest {
 				),
 				-1
 		);
-		var results = reactiveGenerator.collectList().block();
+		var results = reactiveGenerator.toList();
 
 		Assertions.assertNotNull(results);
 		Assertions.assertEquals(limit, results.size());
@@ -161,7 +163,7 @@ public class LuceneGeneratorTest {
 
 		var reactiveGenerator = LuceneGenerator.reactive(is, localQueryParams, -1);
 		var results = fixResults(localQueryParams.isSorted(),
-				localQueryParams.needsScores(), reactiveGenerator.collectList().block());
+				localQueryParams.needsScores(), reactiveGenerator.toList());
 
 		Assertions.assertEquals(4, results.size());
 		Assertions.assertEquals(expectedResults, results);

src/test/java/it/cavallium/dbengine/tests/MemoryTemporaryDbGenerator.java

@@ -0,0 +1,75 @@
+package it.cavallium.dbengine.tests;
+
+import static it.cavallium.dbengine.tests.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
+
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import it.cavallium.data.generator.nativedata.Nullableboolean;
+import it.cavallium.data.generator.nativedata.Nullabledouble;
+import it.cavallium.data.generator.nativedata.Nullableint;
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.client.DefaultDatabaseOptions;
+import it.cavallium.dbengine.client.IndicizerAnalyzers;
+import it.cavallium.dbengine.client.IndicizerSimilarities;
+import it.cavallium.dbengine.database.ColumnUtils;
+import it.cavallium.dbengine.database.memory.LLMemoryDatabaseConnection;
+import it.cavallium.dbengine.lucene.LuceneHacks;
+import it.cavallium.dbengine.lucene.LuceneUtils;
+import it.cavallium.dbengine.lucene.analyzer.TextFieldsAnalyzer;
+import it.cavallium.dbengine.lucene.analyzer.TextFieldsSimilarity;
+import it.cavallium.dbengine.rpc.current.data.ByteBuffersDirectory;
+import it.cavallium.dbengine.rpc.current.data.LuceneOptions;
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+
+public class MemoryTemporaryDbGenerator implements TemporaryDbGenerator {
+
+	private static final LuceneOptions LUCENE_OPTS = new LuceneOptions(Map.of(),
+			Duration.ofSeconds(5),
+			Duration.ofSeconds(5),
+			false,
+			new ByteBuffersDirectory(),
+			Nullableboolean.empty(),
+			Nullabledouble.empty(),
+			Nullableint.empty(),
+			Nullableboolean.empty(),
+			Nullableboolean.empty(),
+			MAX_IN_MEMORY_RESULT_ENTRIES,
+			LuceneUtils.getDefaultMergePolicy()
+	);
+
+	@Override
+	public TempDb openTempDb() {
+		var conn = new LLMemoryDatabaseConnection(new SimpleMeterRegistry());
+
+		SwappableLuceneSearcher searcher = new SwappableLuceneSearcher();
+		var luceneHacks = new LuceneHacks(() -> searcher, () -> searcher);
+		return new TempDb(conn,
+				conn.getDatabase("testdb",
+						List.of(ColumnUtils.dictionary("testmap"), ColumnUtils.special("ints"), ColumnUtils.special("longs")),
+						DefaultDatabaseOptions.builder().build()
+				),
+				conn.getLuceneIndex("testluceneindex1",
+						LuceneUtils.singleStructure(),
+						IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
+						IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
+						LUCENE_OPTS,
+						luceneHacks
+				),
+				conn.getLuceneIndex("testluceneindex16",
+						LuceneUtils.shardsStructure(3),
+						IndicizerAnalyzers.of(TextFieldsAnalyzer.ICUCollationKey),
+						IndicizerSimilarities.of(TextFieldsSimilarity.Boolean),
+						LUCENE_OPTS,
+						luceneHacks
+				),
+				searcher,
+				null
+		);
+	}
+
+	@Override
+	public void closeTempDb(TempDb db) {
+		db.db().close();
+	}
+}

src/test/java/it/cavallium/dbengine/tests/PriorityQueueAdaptor.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import it.cavallium.dbengine.database.DiscardingCloseable;
 import it.cavallium.dbengine.lucene.PriorityQueue;
@@ -7,8 +7,8 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
+import java.util.stream.Stream;
 import org.apache.lucene.search.HitQueue;
-import reactor.core.publisher.Flux;
 
 public class PriorityQueueAdaptor<T> extends SimpleResource implements PriorityQueue<T>, DiscardingCloseable {
 
@@ -61,7 +61,7 @@ public class PriorityQueueAdaptor<T> extends SimpleResource implements PriorityQ
 	}
 
 	@Override
-	public Flux<T> iterate() {
+	public Stream<T> iterate() {
 		List<T> items = new ArrayList<>(hitQueue.size());
 		T item;
 		while ((item = hitQueue.pop()) != null) {
@@ -70,7 +70,7 @@ public class PriorityQueueAdaptor<T> extends SimpleResource implements PriorityQ
 		for (T t : items) {
 			hitQueue.insertWithOverflow(t);
 		}
-		return Flux.fromIterable(items);
+		return items.stream();
 	}
 
 	@Override

src/test/java/it/cavallium/dbengine/tests/Scored.java

@@ -1,3 +1,3 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 record Scored(String key, float score) {}

src/test/java/it/cavallium/dbengine/tests/StringIndicizer.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import com.google.common.primitives.Ints;
 import com.google.common.primitives.Longs;
@@ -16,13 +16,11 @@ import org.apache.lucene.document.Field.Store;
 import org.apache.lucene.index.IndexableField;
 import org.apache.lucene.util.BytesRef;
 import org.jetbrains.annotations.NotNull;
-import reactor.core.publisher.Mono;
 
 public class StringIndicizer extends Indicizer<String, String> {
 
 	@Override
-	public @NotNull Mono<LLUpdateDocument> toIndexRequest(@NotNull String key, @NotNull String value) {
-		return Mono.fromCallable(() -> {
+	public @NotNull LLUpdateDocument toIndexRequest(@NotNull String key, @NotNull String value) {
 		var fields = new LinkedList<LLItem>();
 		fields.add(LLItem.newStringField("uid", key, Field.Store.YES));
 		fields.add(LLItem.newTextField("text", value, Store.NO));
@@ -39,7 +37,6 @@ public class StringIndicizer extends Indicizer<String, String> {
 			fields.add(LLItem.newNumericDocValuesField("longsort", numLong));
 		}
 		return new LLUpdateDocument(fields);
-		});
 	}
 
 	@Override

src/test/java/it/cavallium/dbengine/tests/SwappableLuceneSearcher.java

@@ -1,9 +1,8 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import static java.util.Objects.requireNonNull;
 import static java.util.Objects.requireNonNullElseGet;
 
-import io.netty5.util.Send;
 import it.cavallium.dbengine.database.disk.LLIndexSearcher;
 import it.cavallium.dbengine.database.disk.LLIndexSearchers;
 import it.cavallium.dbengine.lucene.searcher.GlobalQueryRewrite;
@@ -15,7 +14,6 @@ import java.io.Closeable;
 import java.io.IOException;
 import java.util.concurrent.atomic.AtomicReference;
 import org.jetbrains.annotations.Nullable;
-import reactor.core.publisher.Mono;
 
 public class SwappableLuceneSearcher implements LocalSearcher, MultiSearcher, Closeable {
 
@@ -27,7 +25,7 @@ public class SwappableLuceneSearcher implements LocalSearcher, MultiSearcher, Cl
 	}
 
 	@Override
-	public Mono<LuceneSearchResult> collect(Mono<LLIndexSearcher> indexSearcherMono,
+	public LuceneSearchResult collect(LLIndexSearcher indexSearcher,
 			LocalQueryParams queryParams,
 			@Nullable String keyFieldName,
 			GlobalQueryRewrite transformer) {
@@ -36,7 +34,7 @@ public class SwappableLuceneSearcher implements LocalSearcher, MultiSearcher, Cl
 			single = this.multi.get();
 		}
 		requireNonNull(single, "LuceneLocalSearcher not set");
-		return single.collect(indexSearcherMono, queryParams, keyFieldName, transformer);
+		return single.collect(indexSearcher, queryParams, keyFieldName, transformer);
 	}
 
 	@Override
@@ -55,12 +53,12 @@ public class SwappableLuceneSearcher implements LocalSearcher, MultiSearcher, Cl
 	}
 
 	@Override
-	public Mono<LuceneSearchResult> collectMulti(Mono<LLIndexSearchers> indexSearchersMono,
+	public LuceneSearchResult collectMulti(LLIndexSearchers indexSearchers,
 			LocalQueryParams queryParams,
 			String keyFieldName,
 			GlobalQueryRewrite transformer) {
 		var multi = requireNonNull(this.multi.get(), "LuceneMultiSearcher not set");
-		return multi.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
+		return multi.collectMulti(indexSearchers, queryParams, keyFieldName, transformer);
 	}
 
 	public void setSingle(LocalSearcher single) {

src/test/java/it/cavallium/dbengine/tests/TemporaryDbGenerator.java

@@ -0,0 +1,11 @@
+package it.cavallium.dbengine.tests;
+
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import java.io.IOException;
+
+public interface TemporaryDbGenerator {
+
+	TempDb openTempDb() throws IOException;
+
+	void closeTempDb(TempDb db) throws IOException;
+}

src/test/java/it/cavallium/dbengine/tests/TestAlignedRead.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import it.cavallium.dbengine.lucene.DirectNIOFSDirectory;
 import it.cavallium.dbengine.lucene.LuceneUtils;

src/test/java/it/cavallium/dbengine/tests/TestDictionary.java

@@ -0,0 +1,46 @@
+package it.cavallium.dbengine.tests;
+
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.isCIMode;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDb;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDictionary;
+
+import it.cavallium.dbengine.database.UpdateMode;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.stream.Stream;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public abstract class TestDictionary {
+
+	protected abstract TemporaryDbGenerator getTempDbGenerator();
+
+	private static Stream<Arguments> provideArgumentsCreate() {
+		return Arrays.stream(UpdateMode.values()).map(Arguments::of);
+	}
+
+	@BeforeEach
+	public void beforeEach() {
+		ensureNoLeaks(false, false);
+	}
+
+	@AfterEach
+	public void afterEach() {
+		if (!isCIMode()) {
+			ensureNoLeaks(true, false);
+		}
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArgumentsCreate")
+	public void testCreate(UpdateMode updateMode) throws IOException {
+		tempDb(getTempDbGenerator(), db -> {
+			tempDictionary(db, updateMode).clear();
+			return null;
+		});
+	}
+}

src/test/java/it/cavallium/dbengine/tests/TestDictionaryMap.java

@@ -1,42 +1,25 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.*;
-import static it.cavallium.dbengine.SyncUtils.*;
+import static it.cavallium.dbengine.tests.DbTestUtils.*;
 
-import it.cavallium.dbengine.database.LLUtils;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
 import it.cavallium.dbengine.database.UpdateMode;
-import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
-import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
 import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMaps;
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Objects;
-import java.util.Optional;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Stream;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-import reactor.test.StepVerifier;
-import reactor.test.StepVerifier.Step;
-import reactor.util.function.Tuple2;
-import reactor.util.function.Tuples;
 
 public abstract class TestDictionaryMap {
 
 	private static final Logger log = LogManager.getLogger(TestDictionaryMap.class);
-	private TestAllocator allocator;
 	private boolean checkLeaks = true;
 
 	private static boolean isTestBadKeysEnabled() {
@@ -45,6 +28,11 @@ public abstract class TestDictionaryMap {
 
 	protected abstract TemporaryDbGenerator getTempDbGenerator();
 
+	record Tuple2<X, Y>(X getT1, Y getT2) {}
+	record Tuple3<X, Y, Z>(X getT1, Y getT2, Y getT3) {}
+	record Tuple4<X, Y, Z, W>(X getT1, Y getT2, Y getT3, W getT4) {}
+	record Tuple5<X, Y, Z, W, X1>(X getT1, Y getT2, Y getT3, W getT4, X1 getT5) {}
+
 	private static Stream<Arguments> provideArgumentsPut() {
 		var goodKeys = List.of("12345");
 		List<String> badKeys;
@@ -54,7 +42,7 @@ public abstract class TestDictionaryMap {
 			badKeys = List.of();
 		}
 		List<Tuple2<String, Boolean>> keys = Stream
-				.concat(goodKeys.stream().map(s -> Tuples.of(s, false)), badKeys.stream().map(s -> Tuples.of(s, true)))
+				.concat(goodKeys.stream().map(s -> new Tuple2<>(s, false)), badKeys.stream().map(s -> new Tuple2<>(s, true)))
 				.toList();
 		var values = isCIMode() ? List.of("val") : List.of("", "\0", BIG_STRING);
 
@@ -67,18 +55,18 @@ public abstract class TestDictionaryMap {
 					} else {
 						strm = values.stream();
 					}
-					return strm.map(val -> Tuples.of(keyTuple.getT1(), val, keyTuple.getT2()));
+					return strm.map(val -> new Tuple3<>(keyTuple.getT1(), val, keyTuple.getT2()));
 				})
-				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> new Tuple4<>(updateMode,
 						entryTuple.getT1(),
 						entryTuple.getT2(),
 						entryTuple.getT3()
 				)))
-				.flatMap(entryTuple -> Stream.of(Tuples.of(MapType.MAP, entryTuple.getT1(),
+				.flatMap(entryTuple -> Stream.of(new Tuple5<>(MapType.MAP, entryTuple.getT1(),
 						entryTuple.getT2(),
 						entryTuple.getT3(),
 						entryTuple.getT4()
-				), Tuples.of(MapType.HASH_MAP, entryTuple.getT1(),
+				), new Tuple5<>(MapType.HASH_MAP, entryTuple.getT1(),
 						entryTuple.getT2(),
 						entryTuple.getT3(),
 						false
@@ -89,36 +77,33 @@ public abstract class TestDictionaryMap {
 
 	@BeforeEach
 	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
+		ensureNoLeaks(false, false);
 	}
 
 	@AfterEach
 	public void afterEach() {
 		if (!isCIMode() && checkLeaks) {
-			ensureNoLeaks(allocator.allocator(), true, false);
+			ensureNoLeaks(true, false);
 		}
-		destroyAllocator(allocator);
 	}
 
 	@ParameterizedTest
 	@MethodSource("provideArgumentsPut")
-	public void testPut(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail) {
+	public void testPut(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail)
+			throws IOException {
 		var gen = getTempDbGenerator();
-		var db = run(gen.openTempDb(allocator));
-		var dict = run(tempDictionary(db.db(), updateMode));
+		var db = gen.openTempDb();
+		var dict = tempDictionary(db.db(), updateMode);
 		var map = tempDatabaseMapDictionaryMap(dict, mapType, 5);
 
-		runVoid(shouldFail,  map.putValue(key, value));
+		runVoid(shouldFail, () -> map.putValue(key, value));
 
-		var resultingMapSize = run(map.leavesCount(null, false));
+		var resultingMapSize = map.leavesCount(null, false);
 		Assertions.assertEquals(shouldFail ? 0 : 1, resultingMapSize);
 
-		var resultingMap = run(map.get(null));
+		var resultingMap = map.get(null);
 		Assertions.assertEquals(shouldFail ? null : Object2ObjectSortedMaps.singleton(key, value), resultingMap);
 
-		map.close();
-
 		//if (shouldFail) this.checkLeaks = false;
 
 		gen.closeTempDb(db);
@@ -126,47 +111,43 @@ public abstract class TestDictionaryMap {
 
 	@ParameterizedTest
 	@MethodSource("provideArgumentsPut")
-	public void testAtSetAtGet(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail) {
-		var stpVer = StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempDictionary(db, updateMode)
-						.map(dict -> tempDatabaseMapDictionaryMap(dict, mapType, 5))
-						.flatMap(map -> Mono
-								.usingWhen(map.at(null, key), v -> v.set(value), LLUtils::finalizeResource)
-								.then(Mono.usingWhen(map.at(null, key), v -> v.get(null), LLUtils::finalizeResource))
-								.doFinally(s -> map.close())
-						)
-				));
+	public void testAtSetAtGet(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail)
+			throws IOException {
+		var result = tempDb(getTempDbGenerator(), db -> {
+			var map = tempDatabaseMapDictionaryMap(tempDictionary(db, updateMode), mapType, 5);
+			return run(shouldFail, () -> {
+				map.at(null, key).set(value);
+				return map.at(null, key).get(null);
+			});
+		});
 		if (shouldFail) {
 			this.checkLeaks = false;
-			stpVer.verifyError();
 		} else {
-			stpVer.expectNext(value).verifyComplete();
+			Assertions.assertEquals(value, result);
 		}
 	}
 
 	@ParameterizedTest
 	@MethodSource("provideArgumentsPut")
-	public void testPutAndGetPrevious(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail) {
-		var stpVer = StepVerifier
-				.create(tempDb(getTempDbGenerator(), allocator, db -> tempDictionary(db, updateMode)
-						.map(dict -> tempDatabaseMapDictionaryMap(dict, mapType, 5))
-						.flatMapMany(map -> Flux
-								.concat(
-										map.putValueAndGetPrevious(key, "error?"),
+	public void testPutAndGetPrevious(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail)
+			throws IOException {
+		var result = tempDb(getTempDbGenerator(), db -> {
+			var map = tempDatabaseMapDictionaryMap(tempDictionary(db, updateMode), mapType, 5);
+			return run(shouldFail,
+					() -> Arrays.asList(map.putValueAndGetPrevious(key, "error?"),
 							map.putValueAndGetPrevious(key, value),
 							map.putValueAndGetPrevious(key, value)
 					)
-								.doFinally(s -> map.close())
-						)
-				));
+			);
+		});
 		if (shouldFail) {
 			this.checkLeaks = false;
-			stpVer.verifyError();
 		} else {
-			stpVer.expectNext("error?").expectNext(value).verifyComplete();
+			Assertions.assertArrayEquals(new String[] {null, "error?", value}, result.toArray(String[]::new));
 		}
 	}
 
+	/*
 	@ParameterizedTest
 	@MethodSource("provideArgumentsPut")
 	public void testPutValueRemoveAndGetPrevious(MapType mapType, UpdateMode updateMode, String key, String value, boolean shouldFail) {
@@ -370,7 +351,7 @@ public abstract class TestDictionaryMap {
 			badKeys = List.of();
 		}
 		List<Tuple2<List<String>, Boolean>> keys = Stream
-				.concat(goodKeys.stream().map(s -> Tuples.of(s, false)), badKeys.stream().map(s -> Tuples.of(s, true)))
+				.concat(goodKeys.stream().map(s -> new Tuple2<>(s, false)), badKeys.stream().map(s -> new Tuple2<>(s, true)))
 				.toList();
 		var values = isCIMode() ? List.of("val") : List.of("", "\0", BIG_STRING);
 
@@ -381,14 +362,14 @@ public abstract class TestDictionaryMap {
 						.collectMap(Tuple2::getT1, Tuple2::getT2, Object2ObjectLinkedOpenHashMap::new)
 						.block()
 				))
-				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> new Tuple2<>(updateMode,
 						entryTuple.getT1(),
 						entryTuple.getT2()
 				)))
-				.flatMap(entryTuple -> Stream.of(Tuples.of(MapType.MAP, entryTuple.getT1(),
+				.flatMap(entryTuple -> Stream.of(new Tuple2<>(MapType.MAP, entryTuple.getT1(),
 						entryTuple.getT2(),
 						entryTuple.getT3()
-				), Tuples.of(MapType.HASH_MAP, entryTuple.getT1(),
+				), new Tuple2<>(MapType.HASH_MAP, entryTuple.getT1(),
 						entryTuple.getT2(),
 						false
 				)))
@@ -761,4 +742,5 @@ public abstract class TestDictionaryMap {
 
 		Assertions.assertEquals(true, result.get(2));
 	}
+	 */
 }

src/test/java/it/cavallium/dbengine/tests/TestDictionaryMapDeep.java

@@ -1,29 +1,22 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.BIG_STRING;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.isCIMode;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.tempDatabaseMapDictionaryDeepMap;
-import static it.cavallium.dbengine.DbTestUtils.tempDb;
-import static it.cavallium.dbengine.DbTestUtils.tempDictionary;
-import static it.cavallium.dbengine.SyncUtils.*;
-import static org.assertj.core.api.Assertions.*;
+import static it.cavallium.dbengine.tests.DbTestUtils.BIG_STRING;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.isCIMode;
+import static it.cavallium.dbengine.tests.DbTestUtils.run;
+import static it.cavallium.dbengine.tests.DbTestUtils.runVoid;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDatabaseMapDictionaryDeepMap;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDictionary;
 
-import io.netty5.buffer.internal.ResourceSupport;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
+import com.google.common.collect.Streams;
 import it.cavallium.dbengine.database.UpdateMode;
-import it.cavallium.dbengine.utils.SimpleResource;
 import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
 import it.unimi.dsi.fastutil.objects.Object2ObjectSortedMap;
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Objects;
 import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import org.apache.logging.log4j.LogManager;
@@ -36,20 +29,11 @@ import org.junit.jupiter.api.TestMethodOrder;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-import reactor.test.StepVerifier;
-import reactor.test.StepVerifier.Step;
-import reactor.util.function.Tuple2;
-import reactor.util.function.Tuple3;
-import reactor.util.function.Tuple4;
-import reactor.util.function.Tuples;
 
 @TestMethodOrder(MethodOrderer.MethodName.class)
 public abstract class TestDictionaryMapDeep {
 
 	private final Logger log = LogManager.getLogger(this.getClass());
-	private TestAllocator allocator;
 	private boolean checkLeaks = true;
 
 	private static boolean isTestBadKeysEnabled() {
@@ -58,6 +42,11 @@ public abstract class TestDictionaryMapDeep {
 
 	protected abstract TemporaryDbGenerator getTempDbGenerator();
 
+	record Tuple2<X, Y>(X getT1, Y getT2) {}
+	record Tuple3<X, Y, Z>(X getT1, Y getT2, Y getT3) {}
+	record Tuple4<X, Y, Z, W>(X getT1, Y getT2, Y getT3, W getT4) {}
+	record Tuple5<X, Y, Z, W, X1>(X getT1, Y getT2, Y getT3, W getT4, X1 getT5) {}
+
 	private static Stream<Arguments> provideArgumentsSet() {
 		var goodKeys = Set.of("12345");
 		Set<String> badKeys;
@@ -67,8 +56,8 @@ public abstract class TestDictionaryMapDeep {
 			badKeys = Set.of();
 		}
 		Set<Tuple2<String, Boolean>> keys = Stream.concat(
-				goodKeys.stream().map(s -> Tuples.of(s, false)),
-				badKeys.stream().map(s -> Tuples.of(s, true))
+				goodKeys.stream().map(s -> new Tuple2<>(s, false)),
+				badKeys.stream().map(s -> new Tuple2<>(s, true))
 		).collect(Collectors.toSet());
 		var values = Set.of(
 				new Object2ObjectLinkedOpenHashMap<>(Map.of("123456", "a", "234567", "")),
@@ -84,9 +73,9 @@ public abstract class TestDictionaryMapDeep {
 					} else {
 						strm = values.stream();
 					}
-					return strm.map(val -> Tuples.of(keyTuple.getT1(), val, keyTuple.getT2()));
+					return strm.map(val -> new Tuple3<>(keyTuple.getT1(), val, keyTuple.getT2()));
 				})
-				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> new Tuple4<>(updateMode,
 						entryTuple.getT1(),
 						entryTuple.getT2(),
 						entryTuple.getT3()
@@ -112,43 +101,38 @@ public abstract class TestDictionaryMapDeep {
 
 		var values = isCIMode() ? List.of("val") : List.of("a", "", "\0", "\0\0", "z", "azzszgzczqz", BIG_STRING);
 
-		Flux<Tuple4<String, String, String, Boolean>> failOnKeys1 = Flux
-				.fromIterable(badKeys1)
-				.map(badKey1 -> Tuples.of(
+		Stream<Tuple4<String, String, String, Boolean>> failOnKeys1 = badKeys1.stream()
+				.map(badKey1 -> new Tuple4<>(
 						badKey1,
 						goodKeys2.stream().findFirst().orElseThrow(),
 						values.stream().findFirst().orElseThrow(),
 						true
 				));
-		Flux<Tuple4<String, String, String, Boolean>> failOnKeys2 = Flux
-				.fromIterable(badKeys2)
-				.map(badKey2 -> Tuples.of(
+		Stream<Tuple4<String, String, String, Boolean>> failOnKeys2 = badKeys2.stream()
+				.map(badKey2 -> new Tuple4<>(
 						goodKeys1.stream().findFirst().orElseThrow(),
 						badKey2,
 						values.stream().findFirst().orElseThrow(),
 						true
 				));
 
-		Flux<Tuple4<String, String, String, Boolean>> goodKeys1And2 = Flux
-				.fromIterable(values)
-				.map(value -> Tuples.of(
+		Stream<Tuple4<String, String, String, Boolean>> goodKeys1And2 = values.stream()
+				.map(value -> new Tuple4<>(
 						goodKeys1.stream().findFirst().orElseThrow(),
 						goodKeys2.stream().findFirst().orElseThrow(),
 						value,
 						false
 				));
 
-		Flux<Tuple4<String, String, String, Boolean>> keys1And2 = Flux
-				.concat(
+		Stream<Tuple4<String, String, String, Boolean>> keys1And2 = Streams.concat(
 						goodKeys1And2,
 						failOnKeys1,
 						failOnKeys2
 				);
 
 		return keys1And2
-				.concatMap(entryTuple -> Flux
-						.fromArray(UpdateMode.values())
-						.map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Stream.of(UpdateMode.values())
+						.map(updateMode -> new Tuple5<>(updateMode,
 								entryTuple.getT1(),
 								entryTuple.getT2(),
 								entryTuple.getT3(),
@@ -161,22 +145,19 @@ public abstract class TestDictionaryMapDeep {
 						fullTuple.getT4(),
 						fullTuple.getT5()
 				))
-				.toStream()
 				.sequential();
 	}
 
 	@BeforeEach
 	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
+		ensureNoLeaks(false, false);
 	}
 
 	@AfterEach
 	public void afterEach() {
 		if (!isCIMode() && checkLeaks) {
-			ensureNoLeaks(allocator.allocator(), true, false);
+			ensureNoLeaks(true, false);
 		}
-		destroyAllocator(allocator);
 	}
 
 	@ParameterizedTest
@@ -184,25 +165,21 @@ public abstract class TestDictionaryMapDeep {
 	public void testPutValue(UpdateMode updateMode,
 			String key,
 			Object2ObjectSortedMap<String, String> value,
-			boolean shouldFail) {
+			boolean shouldFail) throws IOException {
 		var gen = getTempDbGenerator();
-		var db = run(gen.openTempDb(allocator));
-		var dict = run(tempDictionary(db.db(), updateMode));
+		var db = gen.openTempDb();
+		var dict = tempDictionary(db.db(), updateMode);
 		var map = tempDatabaseMapDictionaryDeepMap(dict, 5, 6);
 
 		log.debug("Put \"{}\" = \"{}\"", key, value);
-		runVoid(shouldFail, map.putValue(key, value));
+		runVoid(shouldFail, () -> map.putValue(key, value));
 
-		var resultingMapSize = run(map.leavesCount(null, false));
+		var resultingMapSize = map.leavesCount(null, false);
 		Assertions.assertEquals(shouldFail ? 0 : value.size(), resultingMapSize);
 
-		var resultingMap = run(map.get(null));
+		var resultingMap = map.get(null);
 		Assertions.assertEquals(shouldFail ? null : Map.of(key, value), resultingMap);
 
-		map.close();
-
-		//if (shouldFail) this.checkLeaks = false;
-
 		gen.closeTempDb(db);
 	}
 
@@ -211,27 +188,23 @@ public abstract class TestDictionaryMapDeep {
 	public void testGetValue(UpdateMode updateMode,
 			String key,
 			Object2ObjectSortedMap<String, String> value,
-			boolean shouldFail) {
+			boolean shouldFail) throws IOException {
 		var gen = getTempDbGenerator();
-		var db = run(gen.openTempDb(allocator));
-		var dict = run(tempDictionary(db.db(), updateMode));
+		var db = gen.openTempDb();
+		var dict = tempDictionary(db.db(), updateMode);
 		var map = tempDatabaseMapDictionaryDeepMap(dict, 5, 6);
 
 		log.debug("Put \"{}\" = \"{}\"", key, value);
-		runVoid(shouldFail, map.putValue(key, value));
+		runVoid(shouldFail, () -> map.putValue(key, value));
 
 		log.debug("Get \"{}\"", key);
-		var returnedValue = run(shouldFail, map.getValue(null, key));
+		var returnedValue = run(shouldFail, () -> map.getValue(null, key));
 
 		Assertions.assertEquals(shouldFail ? null : value, returnedValue);
 
-		map.close();
-
-		//if (shouldFail) this.checkLeaks = false;
-
 		gen.closeTempDb(db);
 	}
-
+/*
 	@ParameterizedTest
 	@MethodSource("provideArgumentsSet")
 	public void testSetValueGetAllValues(UpdateMode updateMode, String key, Object2ObjectSortedMap<String, String> value,
@@ -284,7 +257,7 @@ public abstract class TestDictionaryMapDeep {
 										.getAllStages(null, false)
 										.flatMap(v -> v.getValue()
 												.getAllValues(null, false)
-												.map(result -> Tuples.of(v.getKey(), result.getKey(), result.getValue()))
+												.map(result -> new Tuple2<>(v.getKey(), result.getKey(), result.getValue()))
 												.doFinally(s -> v.getValue().close())
 										)
 								),
@@ -295,9 +268,9 @@ public abstract class TestDictionaryMapDeep {
 			this.checkLeaks = false;
 			stpVer.verifyError();
 		} else {
-			value.forEach((k, v) -> remainingEntries.add(Tuples.of(key, k, v)));
-			remainingEntries.add(Tuples.of("capra", "normal", "123"));
-			remainingEntries.add(Tuples.of("capra", "ormaln", "456"));
+			value.forEach((k, v) -> remainingEntries.add(new Tuple2<>(key, k, v)));
+			remainingEntries.add(new Tuple2<>("capra", "normal", "123"));
+			remainingEntries.add(new Tuple2<>("capra", "ormaln", "456"));
 			for (Tuple3<String, String, String> ignored : remainingEntries) {
 				stpVer = stpVer.expectNextMatches(remainingEntries::remove);
 			}
@@ -771,7 +744,7 @@ public abstract class TestDictionaryMapDeep {
 			badKeys = List.of();
 		}
 		List<Tuple2<List<String>, Boolean>> keys = Stream
-				.concat(goodKeys.stream().map(s -> Tuples.of(s, false)), badKeys.stream().map(s -> Tuples.of(s, true)))
+				.concat(goodKeys.stream().map(s -> new Tuple2<>(s, false)), badKeys.stream().map(s -> new Tuple2<>(s, true)))
 				.toList();
 		var values = isCIMode() ? List.of(new Object2ObjectLinkedOpenHashMap<>(Map.of("123456", "val"))) : List.of(
 				new Object2ObjectLinkedOpenHashMap<>(Map.of("123456", "a", "234567", "")),
@@ -785,7 +758,7 @@ public abstract class TestDictionaryMapDeep {
 						.collectMap(Tuple2::getT1, Tuple2::getT2, Object2ObjectLinkedOpenHashMap::new)
 						.block()
 				))
-				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Arrays.stream(UpdateMode.values()).map(updateMode -> new Tuple2<>(updateMode,
 						entryTuple.getT1(),
 						entryTuple.getT2()
 				)))
@@ -1142,4 +1115,6 @@ public abstract class TestDictionaryMapDeep {
 			stpVer.expectNext(true, entries.isEmpty(), true).verifyComplete();
 		}
 	}
+
+ */
 }

src/test/java/it/cavallium/dbengine/tests/TestDictionaryMapDeepHashMap.java

@@ -1,32 +1,19 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.BIG_STRING;
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.isCIMode;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.DbTestUtils.tempDatabaseMapDictionaryDeepMapHashMap;
-import static it.cavallium.dbengine.DbTestUtils.tempDb;
-import static it.cavallium.dbengine.DbTestUtils.tempDictionary;
+import static it.cavallium.dbengine.tests.DbTestUtils.BIG_STRING;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.isCIMode;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDictionary;
 
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
+import com.google.common.collect.Streams;
 import it.cavallium.dbengine.database.UpdateMode;
 import java.util.List;
-import java.util.Map.Entry;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Flux;
-import reactor.test.StepVerifier;
-import reactor.util.function.Tuple4;
-import reactor.util.function.Tuples;
 
 public abstract class TestDictionaryMapDeepHashMap {
-
-	private TestAllocator allocator;
 	private boolean checkLeaks = true;
 
 	private static boolean isTestBadKeysEnabled() {
@@ -35,6 +22,11 @@ public abstract class TestDictionaryMapDeepHashMap {
 
 	protected abstract TemporaryDbGenerator getTempDbGenerator();
 
+	record Tuple2<X, Y>(X getT1, Y getT2) {}
+	record Tuple3<X, Y, Z>(X getT1, Y getT2, Y getT3) {}
+	record Tuple4<X, Y, Z, W>(X getT1, Y getT2, Y getT3, W getT4) {}
+	record Tuple5<X, Y, Z, W, X1>(X getT1, Y getT2, Y getT3, W getT4, X1 getT5) {}
+
 	private static Stream<Arguments> provideArgumentsPut() {
 		var goodKeys1 = isCIMode() ? List.of("12345") : List.of("12345", "zebra");
 		List<String> badKeys1;
@@ -47,34 +39,31 @@ public abstract class TestDictionaryMapDeepHashMap {
 
 		var values = isCIMode() ? List.of("val") : List.of("a", "", "\0", "\0\0", "z", "azzszgzczqz", BIG_STRING);
 
-		Flux<Tuple4<String, String, String, Boolean>> failOnKeys1 = Flux
-				.fromIterable(badKeys1)
-				.map(badKey1 -> Tuples.of(
+		Stream<Tuple4<String, String, String, Boolean>> failOnKeys1 = badKeys1.stream()
+				.map(badKey1 -> new Tuple4<>(
 						badKey1,
 						goodKeys2.stream().findAny().orElseThrow(),
 						values.stream().findAny().orElseThrow(),
 						true
 				));
 
-		Flux<Tuple4<String, String, String, Boolean>> goodKeys1And2 = Flux
-				.fromIterable(values)
-				.map(value -> Tuples.of(
+		Stream<Tuple4<String, String, String, Boolean>> goodKeys1And2 = values.stream()
+				.map(value -> new Tuple4<>(
 						goodKeys1.stream().findAny().orElseThrow(),
 						goodKeys2.stream().findAny().orElseThrow(),
 						value,
 						false
 				));
 
-		Flux<Tuple4<String, String, String, Boolean>> keys1And2 = Flux
+		Stream<Tuple4<String, String, String, Boolean>> keys1And2 = Streams
 				.concat(
 						goodKeys1And2,
 						failOnKeys1
 				);
 
 		return keys1And2
-				.flatMap(entryTuple -> Flux
-						.fromArray(UpdateMode.values())
-						.map(updateMode -> Tuples.of(updateMode,
+				.flatMap(entryTuple -> Stream.of(UpdateMode.values())
+						.map(updateMode -> new Tuple5<>(updateMode,
 								entryTuple.getT1(),
 								entryTuple.getT2(),
 								entryTuple.getT3(),
@@ -86,24 +75,22 @@ public abstract class TestDictionaryMapDeepHashMap {
 						fullTuple.getT3(),
 						fullTuple.getT4(),
 						fullTuple.getT1() != UpdateMode.ALLOW || fullTuple.getT5()
-				))
-				.toStream();
+				));
 	}
 
 	@BeforeEach
 	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
+		ensureNoLeaks(false, false);
 	}
 
 	@AfterEach
 	public void afterEach() {
 		if (!isCIMode() && checkLeaks) {
-			ensureNoLeaks(allocator.allocator(), true, false);
+			ensureNoLeaks(true, false);
 		}
-		destroyAllocator(allocator);
 	}
 
+	/*
 	@ParameterizedTest
 	@MethodSource("provideArgumentsPut")
 	public void testAtPutValueGetAllValues(UpdateMode updateMode, String key1, String key2, String value, boolean shouldFail) {
@@ -129,4 +116,6 @@ public abstract class TestDictionaryMapDeepHashMap {
 		}
 	}
 
+	 */
+
 }

src/test/java/it/cavallium/dbengine/tests/TestGetter.java

@@ -1,8 +1,7 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import static java.util.Map.entry;
 
-import io.netty5.buffer.BufferAllocator;
 import it.cavallium.dbengine.database.disk.KeyMayExistGetter;
 import it.unimi.dsi.fastutil.bytes.ByteList;
 import java.nio.ByteBuffer;
@@ -41,7 +40,7 @@ public class TestGetter {
 		return new String(bytes.toByteArray(), StandardCharsets.UTF_8);
 	}
 
-	public KeyMayExistGetter getter = new KeyMayExistGetter(BufferAllocator.offHeapUnpooled(), true) {
+	public KeyMayExistGetter getter = new KeyMayExistGetter() {
 		@Override
 		protected KeyMayExist keyMayExist(ReadOptions readOptions, ByteBuffer key, ByteBuffer value) {
 			return null;

src/test/java/it/cavallium/dbengine/tests/TestLLDictionary.java

@@ -0,0 +1,247 @@
+package it.cavallium.dbengine.tests;
+
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.runVoid;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.buffers.Buf;
+import it.cavallium.dbengine.database.LLDictionary;
+import it.cavallium.dbengine.database.LLDictionaryResultType;
+import it.cavallium.dbengine.database.LLKeyValueDatabase;
+import it.cavallium.dbengine.database.LLRange;
+import it.cavallium.dbengine.database.UpdateMode;
+import it.cavallium.dbengine.database.UpdateReturnMode;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Objects;
+import java.util.stream.Stream;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public abstract class TestLLDictionary {
+
+	private final Logger log = LogManager.getLogger(this.getClass());
+	private static final LLRange RANGE_ALL = LLRange.all();
+	private TempDb tempDb;
+	private LLKeyValueDatabase db;
+
+	protected abstract TemporaryDbGenerator getTempDbGenerator();
+
+	@BeforeEach
+	public void beforeEach() throws IOException {
+		ensureNoLeaks(false, false);
+		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(), "TempDB");
+		db = tempDb.db();
+	}
+
+	@AfterEach
+	public void afterEach() throws IOException {
+		getTempDbGenerator().closeTempDb(tempDb);
+		ensureNoLeaks(true, false);
+	}
+
+	public static Stream<Arguments> provideArguments() {
+		return Arrays.stream(UpdateMode.values()).map(Arguments::of);
+	}
+
+	public static Stream<Arguments> providePutArguments() {
+		var updateModes = Arrays.stream(UpdateMode.values());
+		return updateModes.flatMap(updateMode -> {
+			var resultTypes = Arrays.stream(LLDictionaryResultType.values());
+			return resultTypes.map(resultType -> Arguments.of(updateMode, resultType));
+		});
+	}
+
+	public static Stream<Arguments> provideUpdateArguments() {
+		var updateModes = Arrays.stream(UpdateMode.values());
+		return updateModes.flatMap(updateMode -> {
+			var resultTypes = Arrays.stream(UpdateReturnMode.values());
+			return resultTypes.map(resultType -> Arguments.of(updateMode, resultType));
+		});
+	}
+
+	private LLDictionary getDict(UpdateMode updateMode) {
+		var dict = DbTestUtils.tempDictionary(db, updateMode);
+		var key1 = fromString("test-key-1");
+		var key2 = fromString("test-key-2");
+		var key3 = fromString("test-key-3");
+		var key4 = fromString("test-key-4");
+		var value = fromString("test-value");
+		dict.put(key1, value, LLDictionaryResultType.VOID);
+		dict.put(key2, value, LLDictionaryResultType.VOID);
+		dict.put(key3, value, LLDictionaryResultType.VOID);
+		dict.put(key4, value, LLDictionaryResultType.VOID);
+		return dict;
+	}
+
+	private Buf fromString(String s) {
+		var sb = s.getBytes(StandardCharsets.UTF_8);
+		Buf b = Buf.create(sb.length + 3 + 13);
+		b.addElements(0, sb);
+		assert b.size() == sb.length;
+		return b;
+	}
+
+	private String toString(Buf bb) {
+		return bb != null ? bb.toString(StandardCharsets.UTF_8) : null;
+	}
+
+	@Test
+	public void testNoOp() {
+	}
+
+	@Test
+	public void testNoOpAllocation() {
+		for (int i = 0; i < 10; i++) {
+			var a = Buf.create(i * 512);
+		}
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testGetDict(UpdateMode updateMode) {
+		var dict = getDict(updateMode);
+		Assertions.assertNotNull(dict);
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testGetColumnName(UpdateMode updateMode) {
+		var dict = getDict(updateMode);
+		Assertions.assertEquals("hash_map_testmap", dict.getColumnName());
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testGet(UpdateMode updateMode) {
+		var dict = getDict(updateMode);
+		var keyEx = fromString("test-key-1");
+		var keyNonEx = fromString("test-nonexistent");
+		Assertions.assertEquals("test-value", toString(dict.get(null, keyEx)));
+		Assertions.assertEquals("test-value", toString(dict.get(null, keyEx)));
+		Assertions.assertEquals("test-value", toString(dict.get(null, keyEx)));
+		Assertions.assertEquals((String) null, toString(dict.get(null, keyNonEx)));
+		Assertions.assertEquals((String) null, toString(dict.get(null, keyNonEx)));
+		Assertions.assertEquals((String) null, toString(dict.get(null, keyNonEx)));
+	}
+
+	@ParameterizedTest
+	@MethodSource("providePutArguments")
+	public void testPutExisting(UpdateMode updateMode, LLDictionaryResultType resultType) {
+		var dict = getDict(updateMode);
+		var keyEx = fromString("test-key-1");
+		var value = fromString("test-value");
+
+		var beforeSize = dict.sizeRange(null, RANGE_ALL, false);
+
+		dict.put(keyEx, value, resultType);
+
+		var afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		Assertions.assertEquals(0, afterSize - beforeSize);
+	}
+
+	@ParameterizedTest
+	@MethodSource("providePutArguments")
+	public void testPutNew(UpdateMode updateMode, LLDictionaryResultType resultType) {
+		var dict = getDict(updateMode);
+		var keyNonEx = fromString("test-nonexistent");
+		var value = fromString("test-value");
+
+		var beforeSize = dict.sizeRange(null, RANGE_ALL, false);
+
+		dict.put(keyNonEx, value, resultType);
+
+		var afterSize = dict.sizeRange(null, LLRange.all(), false);
+		Assertions.assertEquals(1, afterSize - beforeSize);
+
+		Assertions.assertTrue(dict.getRangeKeys(null, RANGE_ALL, false, false).map(this::toString).toList().contains("test-nonexistent"));
+		Assertions.assertTrue(dict.getRangeKeys(null, RANGE_ALL, true, false).map(this::toString).toList().contains("test-nonexistent"));
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testGetUpdateMode(UpdateMode updateMode) {
+		var dict = getDict(updateMode);
+		assertEquals(updateMode, dict.getUpdateMode());
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideUpdateArguments")
+	public void testUpdateExisting(UpdateMode updateMode, UpdateReturnMode updateReturnMode) {
+		var dict = getDict(updateMode);
+		var keyEx = fromString("test-key-1");
+		var beforeSize = dict.sizeRange(null, RANGE_ALL, false);
+		long afterSize;
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(0, afterSize - beforeSize);
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(0, afterSize - beforeSize);
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(0, afterSize - beforeSize);
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideUpdateArguments")
+	public void testUpdateNew(UpdateMode updateMode, UpdateReturnMode updateReturnMode) {
+		int expected = updateMode == UpdateMode.DISALLOW ? 0 : 1;
+		var dict = getDict(updateMode);
+		var keyNonEx = fromString("test-nonexistent");
+		var beforeSize = dict.sizeRange(null, RANGE_ALL, false);
+		long afterSize;
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(expected, afterSize - beforeSize);
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(expected, afterSize - beforeSize);
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(keyNonEx, old -> fromString("test-value"), updateReturnMode));
+		afterSize = dict.sizeRange(null, RANGE_ALL, false);
+		assertEquals(expected, afterSize - beforeSize);
+
+		if (updateMode != UpdateMode.DISALLOW) {
+			Assertions.assertTrue(dict
+					.getRangeKeys(null, RANGE_ALL, false, false)
+					.map(this::toString)
+					.toList()
+					.contains("test-nonexistent"));
+			Assertions.assertTrue(dict
+					.getRangeKeys(null, RANGE_ALL, true, false)
+					.map(this::toString)
+					.toList()
+					.contains("test-nonexistent"));
+		}
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testUpdateAndGetDelta(UpdateMode updateMode) {
+		log.warn("Test not implemented");
+		//todo: implement
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideArguments")
+	public void testClear(UpdateMode updateMode) {
+		log.warn("Test not implemented");
+		//todo: implement
+	}
+
+	@ParameterizedTest
+	@MethodSource("providePutArguments")
+	public void testRemove(UpdateMode updateMode, LLDictionaryResultType resultType) {
+		log.warn("Test not implemented");
+		//todo: implement
+	}
+}

src/test/java/it/cavallium/dbengine/tests/TestLLDictionaryLeaks.java

@@ -1,21 +1,18 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.SyncUtils.*;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.runVoid;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
-import io.netty5.buffer.Buffer;
-import io.netty5.util.Send;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.database.LLDictionary;
 import it.cavallium.dbengine.database.LLDictionaryResultType;
 import it.cavallium.dbengine.database.LLKeyValueDatabase;
 import it.cavallium.dbengine.database.UpdateMode;
 import it.cavallium.dbengine.database.UpdateReturnMode;
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.Objects;
@@ -27,29 +24,25 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Mono;
 
 public abstract class TestLLDictionaryLeaks {
 
-	private TestAllocator allocator;
 	private TempDb tempDb;
 	private LLKeyValueDatabase db;
 
 	protected abstract TemporaryDbGenerator getTempDbGenerator();
 
 	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(allocator).block(), "TempDB");
+	public void beforeEach() throws IOException {
+		ensureNoLeaks(false, false);
+		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(), "TempDB");
 		db = tempDb.db();
 	}
 
 	@AfterEach
-	public void afterEach() {
-		getTempDbGenerator().closeTempDb(tempDb).block();
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
+	public void afterEach() throws IOException {
+		getTempDbGenerator().closeTempDb(tempDb);
+		ensureNoLeaks(true, false);
 	}
 
 	public static Stream<Arguments> provideArguments() {
@@ -73,30 +66,25 @@ public abstract class TestLLDictionaryLeaks {
 	}
 
 	private LLDictionary getDict(UpdateMode updateMode) {
-		var dict = DbTestUtils.tempDictionary(db, updateMode).blockOptional().orElseThrow();
-		var key1 = Mono.fromCallable(() -> fromString("test-key-1"));
-		var key2 = Mono.fromCallable(() -> fromString("test-key-2"));
-		var key3 = Mono.fromCallable(() -> fromString("test-key-3"));
-		var key4 = Mono.fromCallable(() -> fromString("test-key-4"));
-		var value = Mono.fromCallable(() -> fromString("test-value"));
-		dict.put(key1, value, LLDictionaryResultType.VOID).block();
-		dict.put(key2, value, LLDictionaryResultType.VOID).block();
-		dict.put(key3, value, LLDictionaryResultType.VOID).block();
-		dict.put(key4, value, LLDictionaryResultType.VOID).block();
+		var dict = DbTestUtils.tempDictionary(db, updateMode);
+		var key1 = fromString("test-key-1");
+		var key2 = fromString("test-key-2");
+		var key3 = fromString("test-key-3");
+		var key4 = fromString("test-key-4");
+		var value = fromString("test-value");
+		dict.put(key1, value, LLDictionaryResultType.VOID);
+		dict.put(key2, value, LLDictionaryResultType.VOID);
+		dict.put(key3, value, LLDictionaryResultType.VOID);
+		dict.put(key4, value, LLDictionaryResultType.VOID);
 		return dict;
 	}
 
-	private Buffer fromString(String s) {
+	private Buf fromString(String s) {
 		var sb = s.getBytes(StandardCharsets.UTF_8);
-		var b = db.getAllocator().allocate(sb.length);
-		try {
-			b.writeBytes(sb);
-			assert b.readableBytes() == sb.length;
+		var b = Buf.create(sb.length);
+		b.addElements(0, sb);
+		assert b.size() == sb.length;
 		return b;
-		} catch (Throwable ex) {
-			b.close();
-			throw ex;
-		}
 	}
 
 	@Test
@@ -106,8 +94,7 @@ public abstract class TestLLDictionaryLeaks {
 	@Test
 	public void testNoOpAllocation() {
 		for (int i = 0; i < 10; i++) {
-			var a = allocator.allocator().allocate(i * 512);
-			a.send().receive().close();
+			var a = Buf.create(i * 512);
 		}
 	}
 
@@ -124,30 +111,23 @@ public abstract class TestLLDictionaryLeaks {
 		dict.getColumnName();
 	}
 
-	@ParameterizedTest
-	@MethodSource("provideArguments")
-	public void testGetAllocator(UpdateMode updateMode) {
-		var dict = getDict(updateMode);
-		dict.getAllocator();
-	}
-
 	@ParameterizedTest
 	@MethodSource("provideArguments")
 	public void testGet(UpdateMode updateMode) {
 		var dict = getDict(updateMode);
-		var key = Mono.fromCallable(() -> fromString("test"));
-		runVoid(dict.get(null, key).then());
-		runVoid(dict.get(null, key).then());
-		runVoid(dict.get(null, key).then());
+		var key = fromString("test");
+		dict.get(null, key);
+		dict.get(null, key);
+		dict.get(null, key);
 	}
 
 	@ParameterizedTest
 	@MethodSource("providePutArguments")
 	public void testPut(UpdateMode updateMode, LLDictionaryResultType resultType) {
 		var dict = getDict(updateMode);
-		var key = Mono.fromCallable(() -> fromString("test-key"));
-		var value = Mono.fromCallable(() -> fromString("test-value"));
-		runVoid(dict.put(key, value, resultType).then().doOnDiscard(Buffer.class, Buffer::close));
+		var key = fromString("test-key");
+		var value = fromString("test-value");
+		dict.put(key, value, resultType);
 	}
 
 	@ParameterizedTest
@@ -161,19 +141,13 @@ public abstract class TestLLDictionaryLeaks {
 	@MethodSource("provideUpdateArguments")
 	public void testUpdate(UpdateMode updateMode, UpdateReturnMode updateReturnMode) {
 		var dict = getDict(updateMode);
-		var key = Mono.fromCallable(() -> fromString("test-key"));
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(key, this::pass, updateReturnMode).then()
-		);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(key, this::pass, updateReturnMode).then()
-		);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.update(key, this::pass, updateReturnMode).then()
-		);
+		var key = fromString("test-key");
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(key, this::pass, updateReturnMode));
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(key, this::pass, updateReturnMode));
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.update(key, this::pass, updateReturnMode));
 	}
 
-	private Buffer pass(@Nullable Buffer old) {
+	private Buf pass(@Nullable Buf old) {
 		if (old == null) return null;
 		return old.copy();
 	}
@@ -182,30 +156,24 @@ public abstract class TestLLDictionaryLeaks {
 	@MethodSource("provideArguments")
 	public void testUpdateAndGetDelta(UpdateMode updateMode) {
 		var dict = getDict(updateMode);
-		var key = Mono.fromCallable(() -> fromString("test-key"));
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.updateAndGetDelta(key, this::pass).then()
-		);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.updateAndGetDelta(key, this::pass).then()
-		);
-		runVoid(updateMode == UpdateMode.DISALLOW,
-				dict.updateAndGetDelta(key, this::pass).then()
-		);
+		var key = fromString("test-key");
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.updateAndGetDelta(key, this::pass));
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.updateAndGetDelta(key, this::pass));
+		runVoid(updateMode == UpdateMode.DISALLOW, () -> dict.updateAndGetDelta(key, this::pass));
 	}
 
 	@ParameterizedTest
 	@MethodSource("provideArguments")
 	public void testClear(UpdateMode updateMode) {
 		var dict = getDict(updateMode);
-		runVoid(dict.clear());
+		dict.clear();
 	}
 
 	@ParameterizedTest
 	@MethodSource("providePutArguments")
 	public void testRemove(UpdateMode updateMode, LLDictionaryResultType resultType) {
 		var dict = getDict(updateMode);
-		var key = Mono.fromCallable(() -> fromString("test-key"));
-		runVoid(dict.remove(key, resultType).then().doOnDiscard(Buffer.class, Buffer::close));
+		var key = fromString("test-key");
+		dict.remove(key, resultType);
 	}
 }

src/test/java/it/cavallium/dbengine/tests/TestLocalDictionary.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalDictionary extends TestDictionary {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalDictionaryMap.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalDictionaryMap extends TestDictionaryMap {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalDictionaryMapDeep.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalDictionaryMapDeep extends TestDictionaryMapDeep {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalDictionaryMapDeepHashMap.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalDictionaryMapDeepHashMap extends TestDictionaryMapDeepHashMap {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalLLDictionary.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalLLDictionary extends TestLLDictionary {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalLLDictionaryLeaks.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalLLDictionaryLeaks extends TestLLDictionaryLeaks {
 

src/test/java/it/cavallium/dbengine/tests/TestLocalSingletons.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestLocalSingletons extends TestSingletons {
 

src/test/java/it/cavallium/dbengine/tests/TestLuceneIndex.java

@@ -1,29 +1,26 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.SyncUtils.*;
+import static it.cavallium.dbengine.tests.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.fail;
 
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.client.LuceneIndex;
 import it.cavallium.dbengine.client.Sort;
 import it.cavallium.dbengine.client.query.current.data.MatchAllDocsQuery;
 import it.cavallium.dbengine.database.LLLuceneIndex;
 import it.cavallium.dbengine.database.LLScoreMode;
-import it.cavallium.dbengine.database.LLUtils;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
 import it.cavallium.dbengine.lucene.searcher.AdaptiveLocalSearcher;
 import it.cavallium.dbengine.lucene.searcher.AdaptiveMultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.CountMultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.LocalSearcher;
 import it.cavallium.dbengine.lucene.searcher.MultiSearcher;
 import java.io.IOException;
+import java.util.List;
 import java.util.Objects;
+import java.util.stream.IntStream;
 import java.util.stream.Stream;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -37,15 +34,10 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Flux;
-import reactor.util.function.Tuples;
 
 public class TestLuceneIndex {
 
 	private final Logger log = LogManager.getLogger(this.getClass());
-	private static LLTempHugePqEnv ENV;
-
-	private TestAllocator allocator;
 	private TempDb tempDb;
 	private LLLuceneIndex luceneSingle;
 	private LLLuceneIndex luceneMulti;
@@ -56,14 +48,12 @@ public class TestLuceneIndex {
 
 	@BeforeAll
 	public static void beforeAll() throws IOException {
-		ENV = new LLTempHugePqEnv();
 	}
 
 	@BeforeEach
-	public void beforeEach() {
-		this.allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(allocator).block(), "TempDB");
+	public void beforeEach() throws IOException {
+		ensureNoLeaks(false, false);
+		tempDb = Objects.requireNonNull(getTempDbGenerator().openTempDb(), "TempDB");
 		luceneSingle = tempDb.luceneSingle();
 		luceneMulti = tempDb.luceneMulti();
 	}
@@ -72,13 +62,13 @@ public class TestLuceneIndex {
 		return Stream.of(false, true).map(Arguments::of);
 	}
 
-	private static final Flux<Boolean> multi = Flux.just(false, true);
-	private static final Flux<LLScoreMode> scoreModes = Flux.just(LLScoreMode.NO_SCORES,
+	private static final List<Boolean> multi = List.of(false, true);
+	private static final List<LLScoreMode> scoreModes = List.of(LLScoreMode.NO_SCORES,
 			LLScoreMode.TOP_SCORES,
 			LLScoreMode.COMPLETE_NO_SCORES,
 			LLScoreMode.COMPLETE
 	);
-	private static final Flux<Sort> multiSort = Flux.just(Sort.score(),
+	private static final List<Sort> multiSort = List.of(Sort.score(),
 			Sort.random(),
 			Sort.no(),
 			Sort.doc(),
@@ -86,62 +76,78 @@ public class TestLuceneIndex {
 			Sort.numeric("longsort", true)
 	);
 
+	record Tuple2<X, Y>(X getT1, Y getT2) {
+
+		public Object[] toArray() {
+			return new Object[] {getT1, getT2};
+		}
+	}
+	record Tuple3<X, Y, Z>(X getT1, Y getT2, Y getT3) {
+
+		public Object[] toArray() {
+			return new Object[] {getT1, getT2, getT3};
+		}
+	}
+	record Tuple4<X, Y, Z, W>(X getT1, Y getT2, Y getT3, W getT4) {
+
+		public Object[] toArray() {
+			return new Object[] {getT1, getT2, getT3, getT4};
+		}
+	}
+	record Tuple5<X, Y, Z, W, X1>(X getT1, Y getT2, Y getT3, W getT4, X1 getT5) {
+
+		public Object[] toArray() {
+			return new Object[] {getT1, getT2, getT3, getT4, getT5};
+		}
+	}
+
 	public static Stream<Arguments> provideQueryArgumentsScoreMode() {
-		return multi
-				.concatMap(shard -> scoreModes.map(scoreMode -> Tuples.of(shard, scoreMode)))
-				.map(tuple -> Arguments.of(tuple.toArray()))
-				.toStream();
+		return multi.stream()
+				.flatMap(shard -> scoreModes.stream().map(scoreMode -> new Tuple2<>(shard, scoreMode)))
+				.map(tuple -> Arguments.of(tuple.toArray()));
 	}
 
 	public static Stream<Arguments> provideQueryArgumentsSort() {
-		return multi
-				.concatMap(shard -> multiSort.map(multiSort -> Tuples.of(shard, multiSort)))
-				.map(tuple -> Arguments.of(tuple.toArray()))
-				.toStream();
+		return multi.stream()
+				.flatMap(shard -> multiSort.stream().map(multiSort -> new Tuple2<>(shard, multiSort)))
+				.map(tuple -> Arguments.of(tuple.toArray()));
 	}
 
 	public static Stream<Arguments> provideQueryArgumentsScoreModeAndSort() {
-		return multi
-				.concatMap(shard -> scoreModes.map(scoreMode -> Tuples.of(shard, scoreMode)))
-				.concatMap(tuple -> multiSort.map(multiSort -> Tuples.of(tuple.getT1(), tuple.getT2(), multiSort)))
-				.map(tuple -> Arguments.of(tuple.toArray()))
-				.toStream();
+		return multi.stream()
+				.flatMap(shard -> scoreModes.stream().map(scoreMode -> new Tuple2<>(shard, scoreMode)))
+				.flatMap(tuple -> multiSort.stream().map(multiSort -> new Tuple3<>(tuple.getT1(), tuple.getT2(), multiSort)))
+				.map(tuple -> Arguments.of(tuple.toArray()));
 	}
 
 	@AfterEach
-	public void afterEach() {
-		getTempDbGenerator().closeTempDb(tempDb).block();
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
+	public void afterEach() throws IOException {
+		getTempDbGenerator().closeTempDb(tempDb);
+		ensureNoLeaks(true, false);
 	}
 
 	@AfterAll
 	public static void afterAll() throws IOException {
-		ENV.close();
 	}
 
 	private LuceneIndex<String, String> getLuceneIndex(boolean shards, @Nullable LocalSearcher customSearcher) {
-		LuceneIndex<String, String> index = run(DbTestUtils.tempLuceneIndex(shards ? luceneSingle : luceneMulti));
-		index.updateDocument("test-key-1", "0123456789").block();
-		index.updateDocument("test-key-2", "test 0123456789 test word").block();
-		index.updateDocument("test-key-3", "0123456789 test example string").block();
-		index.updateDocument("test-key-4", "hello world the quick brown fox jumps over the lazy dog").block();
-		index.updateDocument("test-key-5", "hello the quick brown fox jumps over the lazy dog").block();
-		index.updateDocument("test-key-6", "hello the quick brown fox jumps over the world dog").block();
-		index.updateDocument("test-key-7", "the quick brown fox jumps over the world dog").block();
-		index.updateDocument("test-key-8", "the quick brown fox jumps over the lazy dog").block();
-		index.updateDocument("test-key-9", "Example1").block();
-		index.updateDocument("test-key-10", "Example2").block();
-		index.updateDocument("test-key-11", "Example3").block();
-		index.updateDocument("test-key-12", "-234").block();
-		index.updateDocument("test-key-13", "2111").block();
-		index.updateDocument("test-key-14", "2999").block();
-		index.updateDocument("test-key-15", "3902").block();
-		Flux
-				.range(1, 1000)
-				.concatMap(i -> index.updateDocument("test-key-" + (15 + i), "" + i))
-				.transform(LLUtils::handleDiscard)
-				.blockLast();
+		LuceneIndex<String, String> index = DbTestUtils.tempLuceneIndex(shards ? luceneSingle : luceneMulti);
+		index.updateDocument("test-key-1", "0123456789");
+		index.updateDocument("test-key-2", "test 0123456789 test word");
+		index.updateDocument("test-key-3", "0123456789 test example string");
+		index.updateDocument("test-key-4", "hello world the quick brown fox jumps over the lazy dog");
+		index.updateDocument("test-key-5", "hello the quick brown fox jumps over the lazy dog");
+		index.updateDocument("test-key-6", "hello the quick brown fox jumps over the world dog");
+		index.updateDocument("test-key-7", "the quick brown fox jumps over the world dog");
+		index.updateDocument("test-key-8", "the quick brown fox jumps over the lazy dog");
+		index.updateDocument("test-key-9", "Example1");
+		index.updateDocument("test-key-10", "Example2");
+		index.updateDocument("test-key-11", "Example3");
+		index.updateDocument("test-key-12", "-234");
+		index.updateDocument("test-key-13", "2111");
+		index.updateDocument("test-key-14", "2999");
+		index.updateDocument("test-key-15", "3902");
+		IntStream.rangeClosed(1, 1000).forEach(i -> index.updateDocument("test-key-" + (15 + i), "" + i));
 		tempDb.swappableLuceneSearcher().setSingle(new CountMultiSearcher());
 		tempDb.swappableLuceneSearcher().setMulti(new CountMultiSearcher());
 		assertCount(index, 1000 + 15);
@@ -155,8 +161,8 @@ public class TestLuceneIndex {
 				}
 			}
 		} else {
-			tempDb.swappableLuceneSearcher().setSingle(new AdaptiveLocalSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
-			tempDb.swappableLuceneSearcher().setMulti(new AdaptiveMultiSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
+			tempDb.swappableLuceneSearcher().setSingle(new AdaptiveLocalSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
+			tempDb.swappableLuceneSearcher().setMulti(new AdaptiveMultiSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
 		}
 		return index;
 	}
@@ -166,8 +172,8 @@ public class TestLuceneIndex {
 	}
 
 	private long getCount(LuceneIndex<String, String> luceneIndex) {
-		luceneIndex.refresh(true).block();
-		var totalHitsCount = run(luceneIndex.count(null, new MatchAllDocsQuery()));
+		luceneIndex.refresh(true);
+		var totalHitsCount = luceneIndex.count(null, new MatchAllDocsQuery());
 		Assertions.assertTrue(totalHitsCount.exact(), "Can't get count because the total hits count is not exact");
 		return totalHitsCount.value();
 	}
@@ -179,8 +185,7 @@ public class TestLuceneIndex {
 	@Test
 	public void testNoOpAllocation() {
 		for (int i = 0; i < 10; i++) {
-			var a = allocator.allocator().allocate(i * 512);
-			a.send().receive().close();
+			var a = Buf.create(i * 512);
 		}
 	}
 
@@ -195,7 +200,7 @@ public class TestLuceneIndex {
 	@MethodSource("provideArguments")
 	public void testDeleteAll(boolean shards) {
 		var luceneIndex = getLuceneIndex(shards, null);
-		runVoid(luceneIndex.deleteAll());
+		luceneIndex.deleteAll();
 		assertCount(luceneIndex, 0);
 	}
 
@@ -204,7 +209,7 @@ public class TestLuceneIndex {
 	public void testDelete(boolean shards) {
 		var luceneIndex = getLuceneIndex(shards, null);
 		var prevCount = getCount(luceneIndex);
-		runVoid(luceneIndex.deleteDocument("test-key-1"));
+		luceneIndex.deleteDocument("test-key-1");
 		assertCount(luceneIndex, prevCount - 1);
 	}
 
@@ -213,7 +218,7 @@ public class TestLuceneIndex {
 	public void testUpdateSameDoc(boolean shards) {
 		var luceneIndex = getLuceneIndex(shards, null);
 		var prevCount = getCount(luceneIndex);
-		runVoid(luceneIndex.updateDocument("test-key-1", "new-value"));
+		luceneIndex.updateDocument("test-key-1", "new-value");
 		assertCount(luceneIndex, prevCount );
 	}
 
@@ -222,7 +227,7 @@ public class TestLuceneIndex {
 	public void testUpdateNewDoc(boolean shards) {
 		var luceneIndex = getLuceneIndex(shards, null);
 		var prevCount = getCount(luceneIndex);
-		runVoid(luceneIndex.updateDocument("test-key-new", "new-value"));
+		luceneIndex.updateDocument("test-key-new", "new-value");
 		assertCount(luceneIndex, prevCount + 1);
 	}
 

src/test/java/it/cavallium/dbengine/tests/TestLuceneSearches.java

@@ -1,21 +1,17 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
-import static it.cavallium.dbengine.DbTestUtils.destroyAllocator;
-import static it.cavallium.dbengine.DbTestUtils.ensureNoLeaks;
-import static it.cavallium.dbengine.DbTestUtils.newAllocator;
-import static it.cavallium.dbengine.SyncUtils.*;
+import static it.cavallium.dbengine.tests.DbTestUtils.MAX_IN_MEMORY_RESULT_ENTRIES;
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.fail;
 
 import io.netty.buffer.PooledByteBufAllocator;
-import it.cavallium.dbengine.DbTestUtils.TempDb;
-import it.cavallium.dbengine.DbTestUtils.TestAllocator;
+import it.cavallium.dbengine.tests.DbTestUtils.TempDb;
+import it.cavallium.dbengine.tests.TestLuceneIndex.Tuple2;
 import it.cavallium.dbengine.client.HitKey;
 import it.cavallium.dbengine.client.Hits;
 import it.cavallium.dbengine.client.LuceneIndex;
 import it.cavallium.dbengine.client.Sort;
-import it.cavallium.dbengine.client.LazyHitKey;
 import it.cavallium.dbengine.client.query.ClientQueryParams;
 import it.cavallium.dbengine.client.query.ClientQueryParamsBuilder;
 import it.cavallium.dbengine.client.query.current.data.BooleanQuery;
@@ -29,7 +25,6 @@ import it.cavallium.dbengine.client.query.current.data.Term;
 import it.cavallium.dbengine.client.query.current.data.TermQuery;
 import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
 import it.cavallium.dbengine.database.LLLuceneIndex;
-import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
 import it.cavallium.dbengine.lucene.searcher.AdaptiveLocalSearcher;
 import it.cavallium.dbengine.lucene.searcher.AdaptiveMultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.CountMultiSearcher;
@@ -38,18 +33,17 @@ import it.cavallium.dbengine.lucene.searcher.MultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.StandardSearcher;
 import it.cavallium.dbengine.lucene.searcher.ScoredPagedMultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.PagedLocalSearcher;
-import it.cavallium.dbengine.lucene.searcher.SortedScoredFullMultiSearcher;
-import it.cavallium.dbengine.lucene.searcher.SortedByScoreFullMultiSearcher;
 import it.cavallium.dbengine.lucene.searcher.UnsortedStreamingMultiSearcher;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 import java.util.stream.Stream;
 import org.apache.commons.lang3.function.FailableConsumer;
 import org.apache.logging.log4j.LogManager;
@@ -63,18 +57,12 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.FluxSink.OverflowStrategy;
-import reactor.core.scheduler.Schedulers;
-import reactor.util.function.Tuples;
 
 public class TestLuceneSearches {
 
 	private static final Logger log = LogManager.getLogger(TestLuceneSearches.class);
-	private static LLTempHugePqEnv ENV;
 	private static final MemoryTemporaryDbGenerator TEMP_DB_GENERATOR = new MemoryTemporaryDbGenerator();
 
-	private static TestAllocator allocator;
 	private static TempDb tempDb;
 	private static LLLuceneIndex luceneSingle;
 	private static LLLuceneIndex luceneMulti;
@@ -102,31 +90,25 @@ public class TestLuceneSearches {
 		modifiableElements.put("test-key-13", "2111");
 		modifiableElements.put("test-key-14", "2999");
 		modifiableElements.put("test-key-15", "3902");
-		runVoid(Flux.range(1, 1000).doOnNext(i -> modifiableElements.put("test-key-" + (15 + i), "" + i)).then());
+		IntStream.rangeClosed(1, 1000).forEach(i -> modifiableElements.put("test-key-" + (15 + i), "" + i));
 		ELEMENTS = Collections.unmodifiableMap(modifiableElements);
 	}
 
 	@BeforeAll
 	public static void beforeAll() throws IOException {
-		allocator = newAllocator();
-		ensureNoLeaks(allocator.allocator(), false, false);
-		tempDb = Objects.requireNonNull(TEMP_DB_GENERATOR.openTempDb(allocator).block(), "TempDB");
+		ensureNoLeaks(false, false);
+		tempDb = Objects.requireNonNull(TEMP_DB_GENERATOR.openTempDb(), "TempDB");
 		luceneSingle = tempDb.luceneSingle();
 		luceneMulti = tempDb.luceneMulti();
-		ENV = new LLTempHugePqEnv();
 
 		setUpIndex(true);
 		setUpIndex(false);
 	}
 
 	private static void setUpIndex(boolean shards) {
-		LuceneIndex<String, String> index = run(DbTestUtils.tempLuceneIndex(shards ? luceneSingle : luceneMulti));
+		LuceneIndex<String, String> index = DbTestUtils.tempLuceneIndex(shards ? luceneSingle : luceneMulti);
 
-		Flux
-				.fromIterable(ELEMENTS.entrySet())
-				.concatMap(entry -> index.updateDocument(entry.getKey(), entry.getValue()))
-				.subscribeOn(Schedulers.boundedElastic())
-				.blockLast();
+		ELEMENTS.forEach(index::updateDocument);
 		tempDb.swappableLuceneSearcher().setSingle(new CountMultiSearcher());
 		tempDb.swappableLuceneSearcher().setMulti(new CountMultiSearcher());
 		assertCount(index, 1000 + 15);
@@ -141,8 +123,8 @@ public class TestLuceneSearches {
 		return Stream.of(false, true).map(Arguments::of);
 	}
 
-	private static final Flux<Boolean> multi = Flux.just(false, true);
-	private static final Flux<Sort> multiSort = Flux.just(
+	private static final List<Boolean> multi = List.of(false, true);
+	private static final List<Sort> multiSort = List.of(
 			Sort.score(),
 			//todo: fix random sort field
 			//Sort.randomSortField(),
@@ -154,50 +136,43 @@ public class TestLuceneSearches {
 			Sort.numeric("intsort", true)
 	);
 
-	private static Flux<LocalSearcher> getSearchers(ExpectedQueryType info) {
-		return Flux.push(sink -> {
+	private static List<LocalSearcher> getSearchers(ExpectedQueryType info) {
+		var sink = new ArrayList<LocalSearcher>();
 		if (info.shard()) {
 			if (info.onlyCount()) {
-					sink.next(new CountMultiSearcher());
+				sink.add(new CountMultiSearcher());
 			} else {
-					sink.next(new ScoredPagedMultiSearcher());
-					if (info.sorted() && !info.sortedByScore()) {
-						sink.next(new SortedScoredFullMultiSearcher(ENV));
-					} else {
-						sink.next(new SortedByScoreFullMultiSearcher(ENV));
-					}
+				sink.add(new ScoredPagedMultiSearcher());
 				if (!info.sorted()) {
-						sink.next(new UnsortedUnscoredSimpleMultiSearcher(new PagedLocalSearcher()));
-						sink.next(new UnsortedStreamingMultiSearcher());
+					sink.add(new UnsortedUnscoredSimpleMultiSearcher(new PagedLocalSearcher()));
+					sink.add(new UnsortedStreamingMultiSearcher());
 				}
 			}
-				sink.next(new AdaptiveMultiSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
+			sink.add(new AdaptiveMultiSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
 		} else {
 			if (info.onlyCount()) {
-					sink.next(new CountMultiSearcher());
+				sink.add(new CountMultiSearcher());
 			} else {
-					sink.next(new PagedLocalSearcher());
+				sink.add(new PagedLocalSearcher());
 			}
-				sink.next(new AdaptiveLocalSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
+			sink.add(new AdaptiveLocalSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
 		}
-			sink.complete();
-		}, OverflowStrategy.BUFFER);
+		return sink;
 	}
 
 	public static Stream<Arguments> provideQueryArgumentsScoreMode() {
-		return multi.map(tuple -> Arguments.of(multi)).toStream();
+		return multi.stream().map(tuple -> Arguments.of(multi));
 	}
 
 	public static Stream<Arguments> provideQueryArgumentsScoreModeAndSort() {
-		return multi
-				.concatMap(multi -> multiSort.map(multiSort -> Tuples.of(multi, multiSort)))
-				.map(tuple -> Arguments.of(tuple.toArray()))
-				.toStream();
+		return multi.stream()
+				.flatMap(multi -> multiSort.stream().map(multiSort -> new Tuple2<>(multi, multiSort)))
+				.map(tuple -> Arguments.of(tuple.toArray()));
 	}
 
 	private static void runSearchers(ExpectedQueryType expectedQueryType, FailableConsumer<LocalSearcher, Throwable> consumer)
 			throws Throwable {
-		var searchers = run(getSearchers(expectedQueryType).collectList());
+		var searchers = getSearchers(expectedQueryType);
 		for (LocalSearcher searcher : searchers) {
 			log.info("Using searcher \"{}\"", searcher.getName());
 			consumer.accept(searcher);
@@ -214,10 +189,8 @@ public class TestLuceneSearches {
 
 	@AfterAll
 	public static void afterAll() throws IOException {
-		TEMP_DB_GENERATOR.closeTempDb(tempDb).block();
-		ENV.close();
-		ensureNoLeaks(allocator.allocator(), true, false);
-		destroyAllocator(allocator);
+		TEMP_DB_GENERATOR.closeTempDb(tempDb);
+		ensureNoLeaks(true, false);
 	}
 
 	private LuceneIndex<String, String> getLuceneIndex(boolean shards, @Nullable LocalSearcher customSearcher) {
@@ -231,8 +204,8 @@ public class TestLuceneSearches {
 				}
 			}
 		} else {
-			tempDb.swappableLuceneSearcher().setSingle(new AdaptiveLocalSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
-			tempDb.swappableLuceneSearcher().setMulti(new AdaptiveMultiSearcher(ENV, true, MAX_IN_MEMORY_RESULT_ENTRIES));
+			tempDb.swappableLuceneSearcher().setSingle(new AdaptiveLocalSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
+			tempDb.swappableLuceneSearcher().setMulti(new AdaptiveMultiSearcher(MAX_IN_MEMORY_RESULT_ENTRIES));
 		}
 		return shards ? multiIndex : localIndex;
 	}
@@ -242,8 +215,8 @@ public class TestLuceneSearches {
 	}
 
 	private static long getCount(LuceneIndex<String, String> luceneIndex) {
-		luceneIndex.refresh(true).block();
-		var totalHitsCount = run(luceneIndex.count(null, new MatchAllDocsQuery()));
+		luceneIndex.refresh(true);
+		var totalHitsCount = luceneIndex.count(null, new MatchAllDocsQuery());
 		Assertions.assertTrue(totalHitsCount.exact(), "Can't get count because the total hits count is not exact");
 		return totalHitsCount.value();
 	}
@@ -266,7 +239,7 @@ public class TestLuceneSearches {
 		runSearchers(expectedQueryType, searcher -> {
 			var luceneIndex = getLuceneIndex(expectedQueryType.shard(), searcher);
 			var query = queryParamsBuilder.build();
-			try (var results = run(luceneIndex.search(query))) {
+			try (var results = luceneIndex.search(query)) {
 				var hits = results.totalHitsCount();
 				var keys = getResults(results);
 				if (hits.exact()) {
@@ -278,7 +251,7 @@ public class TestLuceneSearches {
 				var standardSearcher = new StandardSearcher();
 				luceneIndex = getLuceneIndex(expectedQueryType.shard(), standardSearcher);
 				var officialQuery = queryParamsBuilder.limit(ELEMENTS.size() * 2L).build();
-				try (var officialResults = run(luceneIndex.search(officialQuery))) {
+				try (var officialResults = luceneIndex.search(officialQuery)) {
 					var officialHits = officialResults.totalHitsCount();
 					var officialKeys = getResults(officialResults);
 					if (officialHits.exact()) {
@@ -303,7 +276,7 @@ public class TestLuceneSearches {
 	@MethodSource("provideQueryArgumentsScoreModeAndSort")
 	public void testSearchNoDocs(boolean shards, Sort multiSort) throws Throwable {
 		var queryBuilder = ClientQueryParams
-				.<LazyHitKey<String>>builder()
+				.<HitKey<String>>builder()
 				.query(new MatchNoDocsQuery())
 				.snapshot(null)
 				.computePreciseHitsCount(true)
@@ -317,7 +290,7 @@ public class TestLuceneSearches {
 	@MethodSource("provideQueryArgumentsScoreModeAndSort")
 	public void testSearchAllDocs(boolean shards, Sort multiSort) throws Throwable {
 		var queryBuilder = ClientQueryParams
-				.<LazyHitKey<String>>builder()
+				.<HitKey<String>>builder()
 				.query(new MatchAllDocsQuery())
 				.snapshot(null)
 				.computePreciseHitsCount(true)
@@ -370,10 +343,10 @@ public class TestLuceneSearches {
 	}
 
 	private List<Scored> getResults(Hits<HitKey<String>> results) {
-		return run(results
+		return results
 				.results()
 				.map(key -> new Scored(key.key(), key.score()))
-				.collectList());
+				.toList();
 	}
 
 }

src/test/java/it/cavallium/dbengine/tests/TestMemoryDictionary.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestMemoryDictionary extends TestDictionary {
 

src/test/java/it/cavallium/dbengine/tests/TestMemoryDictionaryMap.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestMemoryDictionaryMap extends TestDictionaryMap {
 

src/test/java/it/cavallium/dbengine/tests/TestMemoryLLDictionary.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestMemoryLLDictionary extends TestLLDictionary {
 

src/test/java/it/cavallium/dbengine/tests/TestMemoryLLDictionaryLeaks.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestMemoryLLDictionaryLeaks extends TestLLDictionaryLeaks {
 

src/test/java/it/cavallium/dbengine/tests/TestMemorySingletons.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 public class TestMemorySingletons extends TestSingletons {
 

src/test/java/it/cavallium/dbengine/tests/TestPersistentCache.java

@@ -1,4 +1,4 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
 import it.cavallium.dbengine.database.disk.RocksLog4jLogger;
 import java.io.IOException;
@@ -23,7 +23,6 @@ import org.rocksdb.PersistentCache;
 import org.rocksdb.ReadOptions;
 import org.rocksdb.RocksDB;
 import org.rocksdb.RocksDBException;
-import org.rocksdb.TableFormatConfig;
 import org.rocksdb.WriteOptions;
 import org.rocksdb.util.SizeUnit;
 

src/test/java/it/cavallium/dbengine/tests/TestRanges.java

@@ -1,8 +1,8 @@
-package it.cavallium.dbengine.database.collections;
+package it.cavallium.dbengine.tests;
 
-import io.netty5.buffer.Buffer;
-import io.netty5.buffer.BufferAllocator;
+import it.cavallium.dbengine.buffers.Buf;
 import it.cavallium.dbengine.database.LLUtils;
+import it.cavallium.dbengine.database.collections.DatabaseMapDictionaryDeep;
 import java.util.Arrays;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
@@ -11,16 +11,12 @@ import org.junit.jupiter.api.Test;
 
 public class TestRanges {
 
-	private static BufferAllocator alloc;
-
 	@BeforeAll
 	public static void beforeAll() {
-		alloc = BufferAllocator.offHeapPooled();
 	}
 
 	@AfterAll
 	public static void afterAll() {
-		alloc = BufferAllocator.offHeapPooled();
 	}
 
 	@Test
@@ -43,17 +39,15 @@ public class TestRanges {
 
 	public void testNextRangeKey(byte[] prefixKey) {
 		byte[] firstRangeKey;
-		Buffer firstRangeKeyBuf = alloc.allocate(prefixKey.length).writeBytes(prefixKey);
-		try (firstRangeKeyBuf) {
-			DatabaseMapDictionaryDeep.firstRangeKey(firstRangeKeyBuf, prefixKey.length, 7, 3);
-			firstRangeKey = LLUtils.toArray(firstRangeKeyBuf);
-		}
+		Buf firstRangeKeyBuf = Buf.create(prefixKey.length);
+		firstRangeKeyBuf.addElements(0, prefixKey);
+		firstRangeKeyBuf = DatabaseMapDictionaryDeep.firstRangeKey(firstRangeKeyBuf, prefixKey.length, Buf.createZeroes(7 + 3));
+		firstRangeKey = firstRangeKeyBuf.asArray();
 		byte[] nextRangeKey;
-		Buffer nextRangeKeyBuf = alloc.allocate(prefixKey.length).writeBytes(prefixKey);
-		try (nextRangeKeyBuf) {
-			DatabaseMapDictionaryDeep.nextRangeKey(nextRangeKeyBuf, prefixKey.length, 7, 3);
-			nextRangeKey = LLUtils.toArray(nextRangeKeyBuf);
-		}
+		Buf nextRangeKeyBuf = Buf.create(prefixKey.length);
+		nextRangeKeyBuf.addElements(0, prefixKey);
+		nextRangeKeyBuf = DatabaseMapDictionaryDeep.nextRangeKey(nextRangeKeyBuf, prefixKey.length, Buf.createZeroes(7 + 3));
+		nextRangeKey = nextRangeKeyBuf.asArray();
 
 		if (Arrays.equals(prefixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF})) {
 			org.assertj.core.api.Assertions

src/test/java/it/cavallium/dbengine/tests/TestSingletons.java

@@ -0,0 +1,136 @@
+package it.cavallium.dbengine.tests;
+
+import static it.cavallium.dbengine.tests.DbTestUtils.ensureNoLeaks;
+import static it.cavallium.dbengine.tests.DbTestUtils.tempDb;
+
+import it.cavallium.dbengine.database.LLKeyValueDatabase;
+import it.cavallium.dbengine.database.collections.DatabaseInt;
+import it.cavallium.dbengine.database.collections.DatabaseLong;
+import it.cavallium.dbengine.database.collections.DatabaseSingleton;
+import it.cavallium.dbengine.database.serialization.Serializer;
+import java.io.IOException;
+import java.util.stream.Stream;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.junit.jupiter.params.provider.ValueSource;
+
+public abstract class TestSingletons {
+
+	protected abstract TemporaryDbGenerator getTempDbGenerator();
+
+	private static Stream<Arguments> provideNumberWithRepeats() {
+		return Stream.of(
+				Arguments.of(Integer.MIN_VALUE, 2),
+				Arguments.of(-11, 2),
+				Arguments.of(0, 3),
+				Arguments.of(102, 5)
+		);
+	}
+
+	private static Stream<Arguments> provideLongNumberWithRepeats() {
+		return Stream.of(
+				Arguments.of(Long.MIN_VALUE, 2),
+				Arguments.of(-11L, 2),
+				Arguments.of(0L, 3),
+				Arguments.of(102L, 5)
+		);
+	}
+	
+	@BeforeEach
+	public void beforeEach() {
+		ensureNoLeaks(false, false);
+	}
+
+	@AfterEach
+	public void afterEach() {
+		ensureNoLeaks(true, false);
+	}
+
+	@Test
+	public void testCreateInteger() throws IOException {
+		tempDb(getTempDbGenerator(), db -> tempInt(db, "test", 0).get(null));
+	}
+
+	@Test
+	public void testCreateIntegerNoop() throws IOException {
+		tempDb(getTempDbGenerator(), db -> tempInt(db, "test", 0));
+	}
+
+	@Test
+	public void testCreateLong() throws IOException {
+		tempDb(getTempDbGenerator(), db -> tempLong(db, "test", 0).get(null));
+	}
+
+	@Test
+	public void testCreateSingleton() throws IOException {
+		tempDb(getTempDbGenerator(), db -> tempSingleton(db, "testsingleton").get(null));
+	}
+
+	@ParameterizedTest
+	@ValueSource(ints = {Integer.MIN_VALUE, -192, -2, -1, 0, 1, 2, 1292, Integer.MAX_VALUE})
+	public void testDefaultValueInteger(int i) throws IOException {
+		Assertions.assertEquals((Integer) i, tempDb(getTempDbGenerator(), db -> tempInt(db, "test", i).get(null)));
+	}
+
+	@ParameterizedTest
+	@ValueSource(longs = {Long.MIN_VALUE, -192, -2, -1, 0, 1, 2, 1292, Long.MAX_VALUE})
+	public void testDefaultValueLong(long i) throws IOException {
+		Assertions.assertEquals((Long) i, tempDb(getTempDbGenerator(), db -> tempLong(db, "test", i).get(null)));
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideNumberWithRepeats")
+	public void testSetInteger(Integer i, Integer repeats) throws IOException {
+		Assertions.assertEquals(i, tempDb(getTempDbGenerator(), db -> {
+			var dbInt = tempInt(db, "test", 0);
+			for (int integer = 0; integer < repeats; integer++) {
+				dbInt.set((int) System.currentTimeMillis());
+			}
+			dbInt.set(i);
+			return dbInt.get(null);
+		}));
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideLongNumberWithRepeats")
+	public void testSetLong(Long i, Integer repeats) throws IOException {
+		Assertions.assertEquals(i, tempDb(getTempDbGenerator(), db -> {
+			var dbLong = tempLong(db, "test", 0);
+			for (int integer = 0; integer < repeats; integer++) {
+				dbLong.set(System.currentTimeMillis());
+			}
+			dbLong.set(i);
+			return dbLong.get(null);
+		}));
+	}
+
+	@ParameterizedTest
+	@MethodSource("provideLongNumberWithRepeats")
+	public void testSetSingleton(Long i, Integer repeats) throws IOException {
+		Assertions.assertEquals(Long.toString(i), tempDb(getTempDbGenerator(), db -> {
+			var dbSingleton = tempSingleton(db, "test");
+			for (int integer = 0; integer < repeats; integer++) {
+				dbSingleton.set(Long.toString(System.currentTimeMillis()));
+			}
+			dbSingleton.set(Long.toString(i));
+			return dbSingleton.get(null);
+		}));
+	}
+
+	public static DatabaseInt tempInt(LLKeyValueDatabase database, String name, int defaultValue) {
+		return database.getInteger("ints", name, defaultValue);
+	}
+
+	public static DatabaseLong tempLong(LLKeyValueDatabase database, String name, long defaultValue) {
+		return database.getLong("longs", name, defaultValue);
+	}
+
+	public static DatabaseSingleton<String> tempSingleton(LLKeyValueDatabase database, String name) {
+		return new DatabaseSingleton<>(database.getSingleton("longs", name), Serializer.UTF8_SERIALIZER);
+	}
+}

src/test/java/it/cavallium/dbengine/tests/UnsortedUnscoredSimpleMultiSearcher.java

@@ -1,14 +1,10 @@
-package it.cavallium.dbengine;
+package it.cavallium.dbengine.tests;
 
-import static it.cavallium.dbengine.client.UninterruptibleScheduler.uninterruptibleScheduler;
-import static it.cavallium.dbengine.database.LLUtils.singleOrClose;
 import static it.cavallium.dbengine.lucene.searcher.GlobalQueryRewrite.NO_REWRITE;
 
-import io.netty5.util.Send;
+import com.google.common.collect.Streams;
 import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
 import it.cavallium.dbengine.database.LLKeyScore;
-import it.cavallium.dbengine.database.LLUtils;
-import it.cavallium.dbengine.database.disk.LLIndexSearcher;
 import it.cavallium.dbengine.database.disk.LLIndexSearchers;
 import it.cavallium.dbengine.lucene.LuceneCloseable;
 import it.cavallium.dbengine.lucene.LuceneUtils;
@@ -17,17 +13,13 @@ import it.cavallium.dbengine.lucene.searcher.LocalQueryParams;
 import it.cavallium.dbengine.lucene.searcher.LocalSearcher;
 import it.cavallium.dbengine.lucene.searcher.LuceneSearchResult;
 import it.cavallium.dbengine.lucene.searcher.MultiSearcher;
-import it.cavallium.dbengine.lucene.searcher.ShardIndexSearcher;
 import it.cavallium.dbengine.utils.SimpleResource;
-import java.io.IOException;
 import java.io.UncheckedIOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Stream;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-import reactor.core.scheduler.Schedulers;
 
 public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 
@@ -40,12 +32,12 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public Mono<LuceneSearchResult> collectMulti(Mono<LLIndexSearchers> indexSearchersMono,
+	public LuceneSearchResult collectMulti(LLIndexSearchers indexSearchers,
 			LocalQueryParams queryParams,
 			String keyFieldName,
 			GlobalQueryRewrite transformer) {
 		if (transformer != NO_REWRITE) {
-			return LuceneUtils.rewriteMulti(this, indexSearchersMono, queryParams, keyFieldName, transformer);
+			return LuceneUtils.rewriteMulti(this, indexSearchers, queryParams, keyFieldName, transformer);
 		}
 		if (queryParams.isSorted() && queryParams.limitLong() > 0) {
 			throw new UnsupportedOperationException(
@@ -56,15 +48,12 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 					"Scored queries are not supported" + " by SimpleUnsortedUnscoredLuceneMultiSearcher");
 		}
 
-		return singleOrClose(indexSearchersMono, indexSearchers -> {
 		var localQueryParams = getLocalQueryParams(queryParams);
-			return Flux
-					.fromIterable(indexSearchers.llShards())
-					.flatMap(searcher -> localSearcher.collect(Mono.just(searcher), localQueryParams, keyFieldName, transformer))
-					.collectList()
-					.map(results -> {
+		var results = indexSearchers.llShards().stream()
+				.map(searcher -> localSearcher.collect(searcher, localQueryParams, keyFieldName, transformer))
+				.toList();
 		List<LuceneSearchResult> resultsToDrop = new ArrayList<>(results.size());
-						List<Flux<LLKeyScore>> resultsFluxes = new ArrayList<>(results.size());
+		List<Stream<LLKeyScore>> resultsFluxes = new ArrayList<>(results.size());
 		boolean exactTotalHitsCount = true;
 		long totalHitsCountValue = 0;
 		for (LuceneSearchResult result : results) {
@@ -75,14 +64,12 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 		}
 
 		var totalHitsCount = new TotalHitsCount(totalHitsCountValue, exactTotalHitsCount);
-						Flux<LLKeyScore> mergedFluxes = Flux
-								.merge(resultsFluxes)
+		//noinspection unchecked
+		Stream<LLKeyScore> mergedFluxes = (Stream<LLKeyScore>) (Stream) Streams.concat(resultsFluxes.toArray(Stream<?>[]::new))
 				.skip(queryParams.offsetLong())
-								.take(queryParams.limitLong(), true);
+				.limit(queryParams.limitLong());
 
 		return new MyLuceneSearchResult(totalHitsCount, mergedFluxes, resultsToDrop, indexSearchers);
-					});
-		});
 	}
 
 	private LocalQueryParams getLocalQueryParams(LocalQueryParams queryParams) {
@@ -107,7 +94,7 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 		private final LLIndexSearchers indexSearchers;
 
 		public MyLuceneSearchResult(TotalHitsCount totalHitsCount,
-				Flux<LLKeyScore> mergedFluxes,
+				Stream<LLKeyScore> mergedFluxes,
 				List<LuceneSearchResult> resultsToDrop,
 				LLIndexSearchers indexSearchers) {
 			super(totalHitsCount, mergedFluxes);

src/test/java/module-info.java

@@ -0,0 +1,19 @@
+module dbengine.tests {
+	requires org.junit.jupiter.api;
+	requires dbengine;
+	requires data.generator.runtime;
+	requires org.assertj.core;
+	requires org.apache.lucene.core;
+	requires it.unimi.dsi.fastutil;
+	requires org.apache.lucene.queryparser;
+	requires io.netty.common;
+	requires org.jetbrains.annotations;
+	requires micrometer.core;
+	requires org.junit.jupiter.params;
+	requires com.google.common;
+	requires org.apache.logging.log4j;
+	requires io.netty.buffer;
+	requires org.apache.commons.lang3;
+	requires rocksdbjni;
+	opens it.cavallium.dbengine.tests;
+}