Create a class for KeyMayExist code
This commit is contained in:
Andrea Cavalli
parent
8578facfe7
commit
d4de13c2ab
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@ -40,6 +40,7 @@ import org.rocksdb.CompactRangeOptions;
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import org.rocksdb.DirectSlice;
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import org.rocksdb.FlushOptions;
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import org.rocksdb.Holder;
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import org.rocksdb.KeyMayExist;
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import org.rocksdb.KeyMayExist.KeyMayExistEnum;
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import org.rocksdb.ReadOptions;
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import org.rocksdb.RocksDB;
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@ -59,8 +60,6 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
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* Default: true
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*/
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private static final boolean USE_DIRECT_BUFFER_BOUNDS = true;
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private static final boolean WORKAROUND_MAY_EXIST_FAKE_ZERO
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= parseBoolean(getProperty("it.cavallium.dbengine.workaround_may_exist_fake_zero", "true"));
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private static final byte[] NO_DATA = new byte[0];
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protected static final UpdateAtomicResult RESULT_NOTHING = new UpdateAtomicResultNothing();
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@ -99,6 +98,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
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private final Timer updateReplacedTime;
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private final Timer updateRemovedTime;
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private final Timer updateUnchangedTime;
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private final DBColumnKeyMayExistGetter keyMayExistGetter;
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public AbstractRocksDBColumn(T db,
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boolean nettyDirect,
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@ -245,6 +245,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
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.publishPercentileHistogram()
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.tags("db.name", databaseName, "db.column", columnName, "update.type", "unchanged")
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.register(meterRegistry);
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this.keyMayExistGetter = new DBColumnKeyMayExistGetter();
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}
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/**
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@ -340,151 +341,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
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try {
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ensureOpen();
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ensureOwned(readOptions);
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keyBufferSize.record(key.readableBytes());
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int readAttemptsCount = 0;
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try {
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if (nettyDirect) {
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// Get the key nio buffer to pass to RocksDB
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ByteBuffer keyNioBuffer;
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boolean mustCloseKey;
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{
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if (!LLUtils.isReadOnlyDirect(key)) {
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// If the nio buffer is not available, copy the netty buffer into a new direct buffer
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mustCloseKey = true;
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var directKey = DefaultBufferAllocators.offHeapAllocator().allocate(key.readableBytes());
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key.copyInto(key.readerOffset(), directKey, 0, key.readableBytes());
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key = directKey;
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} else {
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mustCloseKey = false;
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}
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keyNioBuffer = ((ReadableComponent) key).readableBuffer();
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assert keyNioBuffer.isDirect();
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assert keyNioBuffer.limit() == key.readableBytes();
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}
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try {
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// Create a direct result buffer because RocksDB works only with direct buffers
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var resultBuffer = alloc.allocate(INITIAL_DIRECT_READ_BYTE_BUF_SIZE_BYTES);
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try {
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assert resultBuffer.readerOffset() == 0;
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assert resultBuffer.writerOffset() == 0;
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var resultWritable = ((WritableComponent) resultBuffer).writableBuffer();
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var keyMayExist = db.keyMayExist(cfh, readOptions, keyNioBuffer.rewind(),
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resultWritable.clear());
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KeyMayExistEnum keyMayExistState = keyMayExist.exists;
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int keyMayExistValueLength = keyMayExist.valueLength;
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// At the beginning, size reflects the expected size, then it becomes the real data size
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int size = keyMayExistState == kExistsWithValue ? keyMayExistValueLength : -1;
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boolean isKExistsWithoutValue = false;
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switch (keyMayExistState) {
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case kNotExist: {
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readValueNotFoundWithBloomBufferSize.record(0);
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resultBuffer.close();
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return null;
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}
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// todo: kExistsWithValue is not reliable (read below),
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// in some cases it should be treated as kExistsWithoutValue
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case kExistsWithValue:
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case kExistsWithoutValue: {
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if (keyMayExistState == kExistsWithoutValue) {
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isKExistsWithoutValue = true;
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} else if (WORKAROUND_MAY_EXIST_FAKE_ZERO) {
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// todo: "size == 0 || resultWritable.limit() == 0" is checked because keyMayExist is broken,
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// and sometimes it returns an empty array, as if it exists
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if (size == 0 || resultWritable.limit() == 0) {
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isKExistsWithoutValue = true;
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}
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}
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if (isKExistsWithoutValue) {
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assert keyMayExistValueLength == 0;
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resultWritable.clear();
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readAttemptsCount++;
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// real data size
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size = db.get(cfh, readOptions, keyNioBuffer.rewind(), resultWritable.clear());
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if (size == RocksDB.NOT_FOUND) {
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resultBuffer.close();
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readValueNotFoundWithMayExistBloomBufferSize.record(0);
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return null;
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}
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}
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}
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default: {
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// real data size
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assert size >= 0;
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if (size <= resultWritable.limit()) {
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if (isKExistsWithoutValue) {
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readValueFoundWithBloomUncachedBufferSize.record(size);
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} else {
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readValueFoundWithBloomCacheBufferSize.record(size);
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}
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assert size == resultWritable.limit();
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return resultBuffer.writerOffset(resultWritable.limit());
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} else {
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resultBuffer.ensureWritable(size);
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resultWritable = ((WritableComponent) resultBuffer).writableBuffer();
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assert resultBuffer.readerOffset() == 0;
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assert resultBuffer.writerOffset() == 0;
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readAttemptsCount++;
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size = db.get(cfh, readOptions, keyNioBuffer.rewind(), resultWritable.clear());
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if (size == RocksDB.NOT_FOUND) {
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readValueNotFoundWithMayExistBloomBufferSize.record(0);
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resultBuffer.close();
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return null;
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}
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assert size == resultWritable.limit();
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if (isKExistsWithoutValue) {
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readValueFoundWithBloomUncachedBufferSize.record(size);
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} else {
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readValueFoundWithBloomCacheBufferSize.record(size);
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}
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return resultBuffer.writerOffset(resultWritable.limit());
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}
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}
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}
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} catch (Throwable t) {
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resultBuffer.close();
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throw t;
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}
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} finally {
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if (mustCloseKey) {
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key.close();
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}
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}
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} else {
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byte[] keyArray = LLUtils.toArray(key);
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requireNonNull(keyArray);
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Holder<byte[]> data = new Holder<>();
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if (db.keyMayExist(cfh, readOptions, keyArray, data)) {
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// todo: "data.getValue().length > 0" is checked because keyMayExist is broken, and sometimes it
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// returns an empty array, as if it exists
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if (data.getValue() != null && (!WORKAROUND_MAY_EXIST_FAKE_ZERO || data.getValue().length > 0)) {
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readValueFoundWithBloomCacheBufferSize.record(data.getValue().length);
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return LLUtils.fromByteArray(alloc, data.getValue());
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} else {
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readAttemptsCount++;
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byte[] result = db.get(cfh, readOptions, keyArray);
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if (result == null) {
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if (data.getValue() != null) {
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readValueNotFoundWithBloomBufferSize.record(0);
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} else {
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readValueNotFoundWithMayExistBloomBufferSize.record(0);
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}
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return null;
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} else {
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readValueFoundWithBloomUncachedBufferSize.record(0);
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return LLUtils.fromByteArray(alloc, result);
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}
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}
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} else {
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readValueNotFoundWithBloomBufferSize.record(0);
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return null;
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}
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}
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} finally {
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readAttempts.record(readAttemptsCount);
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}
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return keyMayExistGetter.get(readOptions, key);
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} finally {
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closeLock.unlockRead(closeReadLock);
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}
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@ -975,4 +832,61 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
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public Counter getEndedIterNext() {
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return endedIterNext;
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}
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private class DBColumnKeyMayExistGetter extends KeyMayExistGetter {
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public DBColumnKeyMayExistGetter() {
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super(alloc, nettyDirect);
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}
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@Override
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protected KeyMayExist keyMayExist(ReadOptions readOptions, ByteBuffer key, ByteBuffer value) {
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return db.keyMayExist(cfh, readOptions, key, value);
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}
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@Override
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protected boolean keyMayExist(ReadOptions readOptions, byte[] key, @Nullable Holder<byte[]> valueHolder) {
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return db.keyMayExist(cfh, readOptions, key, valueHolder);
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}
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@Override
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protected int get(ReadOptions readOptions, ByteBuffer key, ByteBuffer value) throws RocksDBException {
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return db.get(cfh, readOptions, key, value);
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}
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@Override
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protected byte[] get(ReadOptions readOptions, byte[] key) throws RocksDBException, IllegalArgumentException {
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return db.get(cfh, readOptions, key);
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}
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@Override
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protected void recordReadValueNotFoundWithMayExistBloomBufferSize(int value) {
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readValueNotFoundWithMayExistBloomBufferSize.record(value);
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}
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@Override
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protected void recordReadValueFoundWithBloomUncachedBufferSize(int value) {
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readValueFoundWithBloomUncachedBufferSize.record(value);
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}
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@Override
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protected void recordReadValueFoundWithBloomCacheBufferSize(int value) {
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readValueFoundWithBloomCacheBufferSize.record(value);
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}
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@Override
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protected void recordReadAttempts(int value) {
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readAttempts.record(value);
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}
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@Override
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protected void recordReadValueNotFoundWithBloomBufferSize(int value) {
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readValueNotFoundWithBloomBufferSize.record(value);
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}
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@Override
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protected void recordKeyBufferSize(int value) {
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keyBufferSize.record(value);
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}
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}
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}
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@ -0,0 +1,271 @@
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package it.cavallium.dbengine.database.disk;
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import static it.cavallium.dbengine.database.LLUtils.INITIAL_DIRECT_READ_BYTE_BUF_SIZE_BYTES;
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import static java.lang.Boolean.parseBoolean;
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import static java.lang.System.getProperty;
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import static java.util.Objects.requireNonNull;
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import static org.rocksdb.KeyMayExist.KeyMayExistEnum.kExistsWithValue;
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import static org.rocksdb.KeyMayExist.KeyMayExistEnum.kExistsWithoutValue;
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import static org.rocksdb.KeyMayExist.KeyMayExistEnum.kNotExist;
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import io.netty5.buffer.api.Buffer;
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import io.netty5.buffer.api.BufferAllocator;
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import io.netty5.buffer.api.DefaultBufferAllocators;
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import io.netty5.buffer.api.ReadableComponent;
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import io.netty5.buffer.api.WritableComponent;
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import it.cavallium.dbengine.database.LLUtils;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.HexFormat;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import org.rocksdb.ColumnFamilyHandle;
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import org.rocksdb.Holder;
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import org.rocksdb.KeyMayExist;
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import org.rocksdb.KeyMayExist.KeyMayExistEnum;
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import org.rocksdb.ReadOptions;
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import org.rocksdb.RocksDB;
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import org.rocksdb.RocksDBException;
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public abstract class KeyMayExistGetter {
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private static final Logger LOG = LogManager.getLogger(KeyMayExistGetter.class);
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private static final boolean WORKAROUND_MAY_EXIST_FAKE_ZERO = parseBoolean(getProperty(
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"it.cavallium.dbengine.workaround_may_exist_fake_zero",
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"true"
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));
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private static final boolean STRICT_MAYEXIST_NO_VALUE = parseBoolean(getProperty(
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"it.cavallium.dbengine.mayexist.strict_no_value",
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"false"
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));
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private static final BufferAllocator OFF_HEAP_ALLOCATOR = DefaultBufferAllocators.offHeapAllocator();
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private final BufferAllocator bufferAllocator;
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private final boolean nettyDirect;
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public KeyMayExistGetter(BufferAllocator bufferAllocator, boolean nettyDirect) {
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this.bufferAllocator = bufferAllocator;
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this.nettyDirect = nettyDirect;
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}
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public final @Nullable Buffer get(@NotNull ReadOptions readOptions, Buffer key) throws RocksDBException {
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recordKeyBufferSize(key.readableBytes());
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if (nettyDirect) {
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return getDirect(readOptions, key);
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} else {
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return getHeap(readOptions, key);
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}
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}
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private Buffer getDirect(ReadOptions readOptions, Buffer key) throws RocksDBException {
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int readAttemptsCount = 0;
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// Get the key nio buffer to pass to RocksDB
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ByteBuffer keyNioBuffer;
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boolean mustCloseKey;
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{
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if (!LLUtils.isReadOnlyDirect(key)) {
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// If the nio buffer is not available, copy the netty buffer into a new direct buffer
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mustCloseKey = true;
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var directKey = OFF_HEAP_ALLOCATOR.allocate(key.readableBytes());
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key.copyInto(key.readerOffset(), directKey, 0, key.readableBytes());
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key = directKey;
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} else {
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mustCloseKey = false;
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}
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keyNioBuffer = ((ReadableComponent) key).readableBuffer();
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assert keyNioBuffer.isDirect();
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assert keyNioBuffer.limit() == key.readableBytes();
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}
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try {
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// Create a direct result buffer because RocksDB works only with direct buffers
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var resultBuffer = bufferAllocator.allocate(INITIAL_DIRECT_READ_BYTE_BUF_SIZE_BYTES);
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try {
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assert resultBuffer.readerOffset() == 0;
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assert resultBuffer.writerOffset() == 0;
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var resultWritable = ((WritableComponent) resultBuffer).writableBuffer();
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var keyMayExist = keyMayExist(readOptions, keyNioBuffer.rewind(), resultWritable.clear());
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if (STRICT_MAYEXIST_NO_VALUE && keyMayExist.exists != kExistsWithValue && keyMayExist.valueLength != 0) {
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// Create a direct result buffer because RocksDB works only with direct buffers
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try (var realResultBuffer = bufferAllocator.allocate(INITIAL_DIRECT_READ_BYTE_BUF_SIZE_BYTES)) {
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var resultWritableF = resultWritable;
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var realResultWritable = ((WritableComponent) realResultBuffer).writableBuffer();
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var realSize = get(readOptions, keyNioBuffer.rewind(), realResultWritable);
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var hexFormat = HexFormat.ofDelimiter(" ");
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LOG.error(
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"KeyMayExist is {}, but value length is non-zero: {}! Disk value size is {}\nBytes from bloom cache:\n{}\nBytes from db:\n{}",
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() -> keyMayExist.exists,
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() -> keyMayExist.valueLength,
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() -> realSize,
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() -> {
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resultBuffer.writerOffset(resultWritableF.limit());
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return hexFormat.formatHex(LLUtils.toArray(resultBuffer));
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},
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() -> {
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realResultBuffer.writerOffset(realResultWritable.limit());
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return hexFormat.formatHex(LLUtils.toArray(realResultBuffer));
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}
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);
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var sliceKME = LLUtils.toArray(resultBuffer.copy(0, Math.min(resultWritableF.limit(), realSize)));
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var sliceDB = LLUtils.toArray(realResultBuffer.copy(0, Math.min(realResultWritable.limit(), realSize)));
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throw new RocksDBException(
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"KeyMayExist is " + keyMayExist.exists + ", but value length is non-zero: " + keyMayExist.valueLength
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+ "! Disk value size is " + realSize + ". The bloom cache partial value is "
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+ (Arrays.equals(sliceKME, sliceDB) ? "correct" : "corrupted"));
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}
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}
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KeyMayExistEnum keyMayExistState = keyMayExist.exists;
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int keyMayExistValueLength = keyMayExist.valueLength;
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// At the beginning, size reflects the expected size, then it becomes the real data size
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//noinspection SwitchStatementWithTooFewBranches
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int size = switch (keyMayExistState) {
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case kExistsWithValue -> keyMayExistValueLength;
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default -> -1;
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};
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boolean isKExistsWithoutValue = false;
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switch (keyMayExistState) {
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case kNotExist: {
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recordReadValueNotFoundWithBloomBufferSize(0);
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resultBuffer.close();
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return null;
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}
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// todo: kExistsWithValue is not reliable (read below),
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// in some cases it should be treated as kExistsWithoutValue
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case kExistsWithValue:
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case kExistsWithoutValue: {
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if (keyMayExistState == kExistsWithoutValue) {
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isKExistsWithoutValue = true;
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} else if (WORKAROUND_MAY_EXIST_FAKE_ZERO) {
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// todo: "size == 0 || resultWritable.limit() == 0" is checked because keyMayExist is broken,
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// and sometimes it returns an empty array, as if it exists
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if (size == 0 || resultWritable.limit() == 0) {
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isKExistsWithoutValue = true;
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}
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}
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if (isKExistsWithoutValue) {
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assert
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!STRICT_MAYEXIST_NO_VALUE || keyMayExistValueLength == 0 :
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"keyMayExist value length is " + keyMayExistValueLength + " instead of 0";
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resultWritable.clear();
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readAttemptsCount++;
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// real data size
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size = get(readOptions, keyNioBuffer.rewind(), resultWritable.clear());
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if (keyMayExistState == kExistsWithValue && size != keyMayExistValueLength) {
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throw new IllegalStateException("Bloom filter data is corrupted."
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+ " Bloom value size=" + keyMayExistState + ", Real value size=" + size);
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}
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if (size == RocksDB.NOT_FOUND) {
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resultBuffer.close();
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recordReadValueNotFoundWithMayExistBloomBufferSize(0);
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return null;
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}
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}
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}
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default: {
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// real data size
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assert size >= 0;
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if (size <= resultWritable.limit()) {
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if (isKExistsWithoutValue) {
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recordReadValueFoundWithBloomUncachedBufferSize(size);
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} else {
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recordReadValueFoundWithBloomCacheBufferSize(size);
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}
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assert size == resultWritable.limit();
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return resultBuffer.writerOffset(resultWritable.limit());
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} else {
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resultBuffer.ensureWritable(size);
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resultWritable = ((WritableComponent) resultBuffer).writableBuffer();
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assert resultBuffer.readerOffset() == 0;
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assert resultBuffer.writerOffset() == 0;
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readAttemptsCount++;
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size = get(readOptions, keyNioBuffer.rewind(), resultWritable.clear());
|
||||
if (size == RocksDB.NOT_FOUND) {
|
||||
recordReadValueNotFoundWithMayExistBloomBufferSize(0);
|
||||
resultBuffer.close();
|
||||
return null;
|
||||
}
|
||||
assert size == resultWritable.limit();
|
||||
if (isKExistsWithoutValue) {
|
||||
recordReadValueFoundWithBloomUncachedBufferSize(size);
|
||||
} else {
|
||||
recordReadValueFoundWithBloomCacheBufferSize(size);
|
||||
}
|
||||
return resultBuffer.writerOffset(resultWritable.limit());
|
||||
}
|
||||
}
|
||||
}
|
||||
} catch (Throwable t) {
|
||||
resultBuffer.close();
|
||||
throw t;
|
||||
}
|
||||
} finally {
|
||||
if (mustCloseKey) {
|
||||
key.close();
|
||||
}
|
||||
recordReadAttempts(readAttemptsCount);
|
||||
}
|
||||
}
|
||||
|
||||
private Buffer getHeap(ReadOptions readOptions, Buffer key) throws RocksDBException {
|
||||
int readAttemptsCount = 0;
|
||||
try {
|
||||
byte[] keyArray = LLUtils.toArray(key);
|
||||
requireNonNull(keyArray);
|
||||
Holder<byte[]> data = new Holder<>();
|
||||
if (keyMayExist(readOptions, keyArray, data)) {
|
||||
// todo: "data.getValue().length > 0" is checked because keyMayExist is broken, and sometimes it
|
||||
// returns an empty array, as if it exists
|
||||
if (data.getValue() != null && (!WORKAROUND_MAY_EXIST_FAKE_ZERO || data.getValue().length > 0)) {
|
||||
recordReadValueFoundWithBloomCacheBufferSize(data.getValue().length);
|
||||
return LLUtils.fromByteArray(bufferAllocator, data.getValue());
|
||||
} else {
|
||||
readAttemptsCount++;
|
||||
byte[] result = get(readOptions, keyArray);
|
||||
if (result == null) {
|
||||
if (data.getValue() != null) {
|
||||
recordReadValueNotFoundWithBloomBufferSize(0);
|
||||
} else {
|
||||
recordReadValueNotFoundWithMayExistBloomBufferSize(0);
|
||||
}
|
||||
return null;
|
||||
} else {
|
||||
recordReadValueFoundWithBloomUncachedBufferSize(0);
|
||||
return LLUtils.fromByteArray(bufferAllocator, result);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
recordReadValueNotFoundWithBloomBufferSize(0);
|
||||
return null;
|
||||
}
|
||||
} finally {
|
||||
recordReadAttempts(readAttemptsCount);
|
||||
}
|
||||
}
|
||||
|
||||
protected abstract KeyMayExist keyMayExist(final ReadOptions readOptions, final ByteBuffer key, final ByteBuffer value);
|
||||
|
||||
protected abstract boolean keyMayExist(final ReadOptions readOptions,
|
||||
final byte[] key,
|
||||
@Nullable final Holder<byte[]> valueHolder);
|
||||
|
||||
protected abstract int get(final ReadOptions opt, final ByteBuffer key, final ByteBuffer value) throws RocksDBException;
|
||||
|
||||
protected abstract byte[] get(final ReadOptions opt, final byte[] key) throws RocksDBException, IllegalArgumentException;
|
||||
|
||||
protected abstract void recordReadValueNotFoundWithMayExistBloomBufferSize(int value);
|
||||
|
||||
protected abstract void recordReadValueFoundWithBloomUncachedBufferSize(int value);
|
||||
|
||||
protected abstract void recordReadValueFoundWithBloomCacheBufferSize(int value);
|
||||
|
||||
protected abstract void recordReadAttempts(int value);
|
||||
|
||||
protected abstract void recordReadValueNotFoundWithBloomBufferSize(int value);
|
||||
|
||||
protected abstract void recordKeyBufferSize(int value);
|
||||
}
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
package it.cavallium.dbengine;
|
||||
|
||||
import static java.util.Map.entry;
|
||||
|
||||
import io.netty5.buffer.api.BufferAllocator;
|
||||
import it.cavallium.dbengine.database.disk.KeyMayExistGetter;
|
||||
import it.unimi.dsi.fastutil.bytes.ByteList;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.Map;
|
||||
import org.jetbrains.annotations.Nullable;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.rocksdb.Holder;
|
||||
import org.rocksdb.KeyMayExist;
|
||||
import org.rocksdb.KeyMayExist.KeyMayExistEnum;
|
||||
import org.rocksdb.ReadOptions;
|
||||
import org.rocksdb.RocksDBException;
|
||||
//todo:
|
||||
public class TestGetter {
|
||||
|
||||
private static Map<ByteList, ByteList> db = Map.ofEntries(
|
||||
entry(bytes("cached-partially"), bytes("123456789")),
|
||||
entry(bytes("cached-totally"), bytes("ciaov")),
|
||||
entry(bytes("cached-without-value"), bytes("ciaov")),
|
||||
entry(bytes("ciao3"), bytes("ciaov"))
|
||||
);
|
||||
|
||||
record KeyMayExistResult(KeyMayExist.KeyMayExistEnum keyMayExistEnum, int size, ByteList cachedValue) {}
|
||||
|
||||
private static Map<ByteList, KeyMayExistResult> cache = Map.ofEntries(
|
||||
entry(bytes("cached-partially"), new KeyMayExistResult(KeyMayExistEnum.kExistsWithoutValue, 9, bytes("12345678"))),
|
||||
entry(bytes("cached-totally"), new KeyMayExistResult(KeyMayExistEnum.kExistsWithValue, 5, bytes("ciaov"))),
|
||||
entry(bytes("cached-without-value"), new KeyMayExistResult(KeyMayExistEnum.kExistsWithoutValue, 0, bytes("ciaov")))
|
||||
);
|
||||
|
||||
private static ByteList bytes(String text) {
|
||||
return ByteList.of(text.getBytes(StandardCharsets.UTF_8));
|
||||
}
|
||||
|
||||
private static String text(ByteList bytes) {
|
||||
return new String(bytes.toByteArray(), StandardCharsets.UTF_8);
|
||||
}
|
||||
|
||||
public KeyMayExistGetter getter = new KeyMayExistGetter(BufferAllocator.offHeapUnpooled(), true) {
|
||||
@Override
|
||||
protected KeyMayExist keyMayExist(ReadOptions readOptions, ByteBuffer key, ByteBuffer value) {
|
||||
return null;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected boolean keyMayExist(ReadOptions readOptions, byte[] key, @Nullable Holder<byte[]> valueHolder) {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected int get(ReadOptions opt, ByteBuffer key, ByteBuffer value) throws RocksDBException {
|
||||
return 0;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected byte[] get(ReadOptions opt, byte[] key) throws RocksDBException, IllegalArgumentException {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordReadValueNotFoundWithMayExistBloomBufferSize(int value) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordReadValueFoundWithBloomUncachedBufferSize(int value) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordReadValueFoundWithBloomCacheBufferSize(int value) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordReadAttempts(int value) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordReadValueNotFoundWithBloomBufferSize(int value) {
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void recordKeyBufferSize(int value) {
|
||||
|
||||
}
|
||||
};
|
||||
|
||||
@Test
|
||||
public void testSimpleGet() {
|
||||
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue