Merge branch 'master' of https://github.com/facebook/rocksdb

HISTORY.md

@@ -8,6 +8,7 @@
 * We have refactored our system of stalling writes.  Any stall-related statistics' meanings are changed. Instead of per-write stall counts, we now count stalls per-epoch, where epochs are periods between flushes and compactions. You'll find more information in our Tuning Perf Guide once we release RocksDB 3.6.
 * When disableDataSync=true, we no longer sync the MANIFEST file.
 * Add identity_as_first_hash property to CuckooTable. SST file needs to be rebuilt to be opened by reader properly.
+* Change target_file_size_base type to uint64_t from int.
 
 ----- Past Releases -----
 

Makefile

@@ -198,7 +198,7 @@ endif  # PLATFORM_SHARED_EXT
 
 .PHONY: blackbox_crash_test check clean coverage crash_test ldb_tests \
 	release tags valgrind_check whitebox_crash_test format static_lib shared_lib all \
-	dbg install uninstall
+	dbg rocksdbjavastatic rocksdbjava install uninstall
 
 all: $(LIBRARY) $(PROGRAMS) $(TESTS)
 
@@ -268,7 +268,7 @@ unity: unity.cc unity.o
 clean:
 	-rm -f $(PROGRAMS) $(TESTS) $(LIBRARY) $(SHARED) $(MEMENVLIBRARY) build_config.mk unity.cc
 	-rm -rf ios-x86/* ios-arm/*
-	-find . -name "*.[od]" -exec rm {} \;
+	-find . -name "*.[oda]" -exec rm {} \;
 	-find . -type f -regex ".*\.\(\(gcda\)\|\(gcno\)\)" -exec rm {} \;
 tags:
 	ctags * -R
@@ -518,6 +518,37 @@ ROCKSDBJNILIB = librocksdbjni.jnilib
 JAVA_INCLUDE = -I/System/Library/Frameworks/JavaVM.framework/Headers/
 endif
 
+libz.a:
+	-rm -rf zlib-1.2.8
+	curl -O http://zlib.net/zlib-1.2.8.tar.gz
+	tar xvzf zlib-1.2.8.tar.gz
+	cd zlib-1.2.8 && CFLAGS='-fPIC' ./configure --static && make
+	cp zlib-1.2.8/libz.a . 
+
+libbz2.a:
+	-rm -rf bzip2-1.0.6
+	curl -O  http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz 
+	tar xvzf bzip2-1.0.6.tar.gz
+	cd bzip2-1.0.6 && make CFLAGS='-fPIC -Wall -Winline -O2 -g -D_FILE_OFFSET_BITS=64'
+	cp bzip2-1.0.6/libbz2.a .
+
+libsnappy.a:
+	-rm -rf snappy-1.1.1
+	curl -O https://snappy.googlecode.com/files/snappy-1.1.1.tar.gz
+	tar xvzf snappy-1.1.1.tar.gz
+	cd snappy-1.1.1 && ./configure --with-pic --enable-static
+	cd snappy-1.1.1 && make
+	cp snappy-1.1.1/.libs/libsnappy.a .
+		
+
+rocksdbjavastatic: libz.a libbz2.a libsnappy.a
+	OPT="-fPIC -DNDEBUG -O2" $(MAKE) $(LIBRARY) -j
+	cd java;$(MAKE) java;
+	rm -f ./java/$(ROCKSDBJNILIB)
+	$(CXX) $(CXXFLAGS) -I./java/. $(JAVA_INCLUDE) -shared -fPIC -o ./java/$(ROCKSDBJNILIB) $(JNI_NATIVE_SOURCES) $(LIBOBJECTS) $(COVERAGEFLAGS) libz.a libbz2.a libsnappy.a
+	cd java;jar -cf $(ROCKSDB_JAR) org/rocksdb/*.class org/rocksdb/util/*.class HISTORY*.md $(ROCKSDBJNILIB)
+	
+
 rocksdbjava:
 	OPT="-fPIC -DNDEBUG -O2" $(MAKE) $(LIBRARY) -j32
 	cd java;$(MAKE) java;

db/column_family.cc

@@ -86,6 +86,10 @@ ColumnFamilyHandleImpl::~ColumnFamilyHandleImpl() {
 
 uint32_t ColumnFamilyHandleImpl::GetID() const { return cfd()->GetID(); }
 
+const Comparator* ColumnFamilyHandleImpl::user_comparator() const {
+  return cfd()->user_comparator();
+}
+
 ColumnFamilyOptions SanitizeOptions(const InternalKeyComparator* icmp,
                                     const ColumnFamilyOptions& src) {
   ColumnFamilyOptions result = src;
@@ -726,4 +730,13 @@ uint32_t GetColumnFamilyID(ColumnFamilyHandle* column_family) {
   return column_family_id;
 }
 
+const Comparator* GetColumnFamilyUserComparator(
+    ColumnFamilyHandle* column_family) {
+  if (column_family != nullptr) {
+    auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
+    return cfh->user_comparator();
+  }
+  return nullptr;
+}
+
 }  // namespace rocksdb

db/column_family.h

@@ -49,6 +49,7 @@ class ColumnFamilyHandleImpl : public ColumnFamilyHandle {
   // destroy without mutex
   virtual ~ColumnFamilyHandleImpl();
   virtual ColumnFamilyData* cfd() const { return cfd_; }
+  virtual const Comparator* user_comparator() const;
 
   virtual uint32_t GetID() const;
 
@@ -448,4 +449,7 @@ class ColumnFamilyMemTablesImpl : public ColumnFamilyMemTables {
 
 extern uint32_t GetColumnFamilyID(ColumnFamilyHandle* column_family);
 
+extern const Comparator* GetColumnFamilyUserComparator(
+    ColumnFamilyHandle* column_family);
+
 }  // namespace rocksdb

db/compaction_picker.cc

@@ -575,7 +575,7 @@ Compaction* UniversalCompactionPicker::PickCompaction(Version* version,
     return nullptr;
   }
   Version::FileSummaryStorage tmp;
-  LogToBuffer(log_buffer, "[%s] Universal: candidate files(%zu): %s\n",
+  LogToBuffer(log_buffer, 3072, "[%s] Universal: candidate files(%zu): %s\n",
               version->cfd_->GetName().c_str(), version->files_[level].size(),
               version->LevelFileSummary(&tmp, 0));
 

db/db_bench.cc

@@ -307,7 +307,7 @@ DEFINE_string(wal_dir, "", "If not empty, use the given dir for WAL");
 
 DEFINE_int32(num_levels, 7, "The total number of levels");
 
-DEFINE_int32(target_file_size_base, 2 * 1048576, "Target file size at level-1");
+DEFINE_int64(target_file_size_base, 2 * 1048576, "Target file size at level-1");
 
 DEFINE_int32(target_file_size_multiplier, 1,
              "A multiplier to compute target level-N file size (N >= 2)");

db/db_impl.cc

@@ -3117,9 +3117,6 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
   const uint64_t start_micros = env_->NowMicros();
   unique_ptr<Iterator> input(versions_->MakeInputIterator(compact->compaction));
   input->SeekToFirst();
-  shared_ptr<Iterator> backup_input(
-      versions_->MakeInputIterator(compact->compaction));
-  backup_input->SeekToFirst();
 
   Status status;
   ParsedInternalKey ikey;
@@ -3132,14 +3129,30 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
   auto compaction_filter_v2 =
     compaction_filter_from_factory_v2.get();
 
-  // temp_backup_input always point to the start of the current buffer
+  if (!compaction_filter_v2) {
-  // temp_backup_input = backup_input;
+    status = ProcessKeyValueCompaction(
-  // iterate through input,
+      is_snapshot_supported,
-  // 1) buffer ineligible keys and value keys into 2 separate buffers;
+      visible_at_tip,
-  // 2) send value_buffer to compaction filter and alternate the values;
+      earliest_snapshot,
-  // 3) merge value_buffer with ineligible_value_buffer;
+      latest_snapshot,
-  // 4) run the modified "compaction" using the old for loop.
+      deletion_state,
-  if (compaction_filter_v2) {
+      bottommost_level,
+      imm_micros,
+      input.get(),
+      compact,
+      false,
+      log_buffer);
+  } else {
+    // temp_backup_input always point to the start of the current buffer
+    // temp_backup_input = backup_input;
+    // iterate through input,
+    // 1) buffer ineligible keys and value keys into 2 separate buffers;
+    // 2) send value_buffer to compaction filter and alternate the values;
+    // 3) merge value_buffer with ineligible_value_buffer;
+    // 4) run the modified "compaction" using the old for loop.
+    shared_ptr<Iterator> backup_input(
+        versions_->MakeInputIterator(compact->compaction));
+    backup_input->SeekToFirst();
     while (backup_input->Valid() && !shutting_down_.Acquire_Load() &&
            !cfd->IsDropped()) {
       // FLUSH preempts compaction
@@ -3267,21 +3280,6 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
         log_buffer);
   }  // checking for compaction filter v2
 
-  if (!compaction_filter_v2) {
-    status = ProcessKeyValueCompaction(
-      is_snapshot_supported,
-      visible_at_tip,
-      earliest_snapshot,
-      latest_snapshot,
-      deletion_state,
-      bottommost_level,
-      imm_micros,
-      input.get(),
-      compact,
-      false,
-      log_buffer);
-  }
-
   if (status.ok() && (shutting_down_.Acquire_Load() || cfd->IsDropped())) {
     status = Status::ShutdownInProgress(
         "Database shutdown or Column family drop during compaction");

db/version_set.h

@@ -183,10 +183,10 @@ class Version {
   // Return a human-readable short (single-line) summary of the number
   // of files per level.  Uses *scratch as backing store.
   struct LevelSummaryStorage {
-    char buffer[100];
+    char buffer[1000];
   };
   struct FileSummaryStorage {
-    char buffer[1000];
+    char buffer[3000];
   };
   const char* LevelSummary(LevelSummaryStorage* scratch) const;
   // Return a human-readable short (single-line) summary of files

db/write_batch_test.cc

@@ -289,6 +289,9 @@ class ColumnFamilyHandleImplDummy : public ColumnFamilyHandleImpl {
   explicit ColumnFamilyHandleImplDummy(int id)
       : ColumnFamilyHandleImpl(nullptr, nullptr, nullptr), id_(id) {}
   uint32_t GetID() const override { return id_; }
+  const Comparator* user_comparator() const override {
+    return BytewiseComparator();
+  }
 
  private:
   uint32_t id_;
@@ -320,7 +323,7 @@ TEST(WriteBatchTest, ColumnFamiliesBatchTest) {
 }
 
 TEST(WriteBatchTest, ColumnFamiliesBatchWithIndexTest) {
-  WriteBatchWithIndex batch(BytewiseComparator(), 20);
+  WriteBatchWithIndex batch;
   ColumnFamilyHandleImplDummy zero(0), two(2), three(3), eight(8);
   batch.Put(&zero, Slice("foo"), Slice("bar"));
   batch.Put(&two, Slice("twofoo"), Slice("bar2"));

include/rocksdb/immutable_options.h

@@ -77,6 +77,8 @@ struct ImmutableCFOptions {
   std::vector<CompressionType> compression_per_level;
 
   CompressionOptions compression_opts;
+
+  Options::AccessHint access_hint_on_compaction_start;
 };
 
 }  // namespace rocksdb

include/rocksdb/options.h

@@ -58,6 +58,7 @@ enum CompactionStyle : char {
   kCompactionStyleFIFO = 0x2,       // FIFO compaction style
 };
 
+
 struct CompactionOptionsFIFO {
   // once the total sum of table files reaches this, we will delete the oldest
   // table file
@@ -287,7 +288,7 @@ struct ColumnFamilyOptions {
   // and each file on level-3 will be 200MB.
 
   // by default target_file_size_base is 2MB.
-  int target_file_size_base;
+  uint64_t target_file_size_base;
   // by default target_file_size_multiplier is 1, which means
   // by default files in different levels will have similar size.
   int target_file_size_multiplier;
@@ -783,12 +784,13 @@ struct DBOptions {
   // Specify the file access pattern once a compaction is started.
   // It will be applied to all input files of a compaction.
   // Default: NORMAL
-  enum {
+  enum AccessHint {
-    NONE,
+      NONE,
-    NORMAL,
+      NORMAL,
-    SEQUENTIAL,
+      SEQUENTIAL,
-    WILLNEED
+      WILLNEED
-  } access_hint_on_compaction_start;
+  };
+  AccessHint access_hint_on_compaction_start;
 
   // Use adaptive mutex, which spins in the user space before resorting
   // to kernel. This could reduce context switch when the mutex is not

include/rocksdb/utilities/write_batch_with_index.h

@@ -11,8 +11,9 @@
 
 #pragma once
 
-#include "rocksdb/status.h"
+#include "rocksdb/comparator.h"
 #include "rocksdb/slice.h"
+#include "rocksdb/status.h"
 #include "rocksdb/write_batch.h"
 
 namespace rocksdb {
@@ -56,12 +57,14 @@ class WBWIIterator {
 // A user can call NewIterator() to create an iterator.
 class WriteBatchWithIndex {
  public:
-  // index_comparator indicates the order when iterating data in the write
+  // backup_index_comparator: the backup comparator used to compare keys
-  // batch. Technically, it doesn't have to be the same as the one used in
+  // within the same column family, if column family is not given in the
-  // the DB.
+  // interface, or we can't find a column family from the column family handle
+  // passed in, backup_index_comparator will be used for the column family.
   // reserved_bytes: reserved bytes in underlying WriteBatch
-  explicit WriteBatchWithIndex(const Comparator* index_comparator,
+  explicit WriteBatchWithIndex(
-                               size_t reserved_bytes = 0);
+      const Comparator* backup_index_comparator = BytewiseComparator(),
+      size_t reserved_bytes = 0);
   virtual ~WriteBatchWithIndex();
 
   WriteBatch* GetWriteBatch();

java/org/rocksdb/NativeLibraryLoader.java

@@ -0,0 +1,58 @@
+package org.rocksdb;
+
+import java.io.*;
+
+
+/**
+ * This class is used to load the RocksDB shared library from within the jar.
+ * The shared library is extracted to a temp folder and loaded from there.
+ */
+public class NativeLibraryLoader {
+  private static String sharedLibraryName = "librocksdbjni.so";
+  private static String tempFilePrefix = "librocksdbjni";
+  private static String tempFileSuffix = ".so";
+
+  public static void loadLibraryFromJar(String tmpDir)
+      throws IOException {
+    File temp;
+    if(tmpDir == null || tmpDir.equals(""))
+      temp = File.createTempFile(tempFilePrefix, tempFileSuffix);
+    else
+      temp = new File(tmpDir + "/" + sharedLibraryName);
+
+    temp.deleteOnExit();
+
+    if (!temp.exists()) {
+      throw new RuntimeException("File " + temp.getAbsolutePath() + " does not exist.");
+    }
+
+    byte[] buffer = new byte[102400];
+    int readBytes;
+
+    InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream(sharedLibraryName);
+    if (is == null) {
+      throw new RuntimeException(sharedLibraryName + " was not found inside JAR.");
+    }
+
+    OutputStream os = null;
+    try {
+      os = new FileOutputStream(temp);
+      while ((readBytes = is.read(buffer)) != -1) {
+        os.write(buffer, 0, readBytes);
+      }
+    } finally {
+      if(os != null)
+        os.close();
+
+      if(is != null)
+        is.close();
+    }
+
+    System.load(temp.getAbsolutePath());
+  }
+  /**
+   * Private constructor to disallow instantiation
+   */
+  private NativeLibraryLoader() {
+  }
+}

java/org/rocksdb/Options.java

@@ -13,6 +13,9 @@ package org.rocksdb;
  * native resources will be released as part of the process.
  */
 public class Options extends RocksObject {
+  static {
+    RocksDB.loadLibrary();
+  }
   static final long DEFAULT_CACHE_SIZE = 8 << 20;
   static final int DEFAULT_NUM_SHARD_BITS = -1;
   /**

java/org/rocksdb/RocksDB.java

@@ -11,6 +11,7 @@ import java.util.HashMap;
 import java.io.Closeable;
 import java.io.IOException;
 import org.rocksdb.util.Environment;
+import org.rocksdb.NativeLibraryLoader;
 
 /**
  * A RocksDB is a persistent ordered map from keys to values.  It is safe for
@@ -23,11 +24,19 @@ public class RocksDB extends RocksObject {
   private static final String[] compressionLibs_ = {
       "snappy", "z", "bzip2", "lz4", "lz4hc"};
 
+  static {
+    RocksDB.loadLibrary();
+  }
+
   /**
    * Loads the necessary library files.
    * Calling this method twice will have no effect.
+   * By default the method extracts the shared library for loading at
+   * java.io.tmpdir, however, you can override this temporary location by
+   * setting the environment variable ROCKSDB_SHAREDLIB_DIR.
    */
   public static synchronized void loadLibrary() {
+    String tmpDir = System.getenv("ROCKSDB_SHAREDLIB_DIR");
     // loading possibly necessary libraries.
     for (String lib : compressionLibs_) {
       try {
@@ -36,8 +45,14 @@ public class RocksDB extends RocksObject {
         // since it may be optional, we ignore its loading failure here.
       }
     }
-    // However, if any of them is required.  We will see error here.
+    try
-    System.loadLibrary("rocksdbjni");
+    {
+      NativeLibraryLoader.loadLibraryFromJar(tmpDir);
+    }
+    catch (IOException e)
+    {
+      throw new RuntimeException("Unable to load the RocksDB shared library" + e);
+    }
   }
 
   /**

table/block_based_table_reader.cc

@@ -498,7 +498,6 @@ Status BlockBasedTable::Open(const ImmutableCFOptions& ioptions,
     // pre-load these blocks, which will kept in member variables in Rep
     // and with a same life-time as this table object.
     IndexReader* index_reader = nullptr;
-    // TODO: we never really verify check sum for index block
     s = new_table->CreateIndexReader(&index_reader, meta_iter.get());
 
     if (s.ok()) {
@@ -533,8 +532,7 @@ Status BlockBasedTable::Open(const ImmutableCFOptions& ioptions,
 }
 
 void BlockBasedTable::SetupForCompaction() {
-  /*
+  switch (rep_->ioptions.access_hint_on_compaction_start) {
-  switch (.access_hint_on_compaction_start) {
     case Options::NONE:
       break;
     case Options::NORMAL:
@@ -550,7 +548,6 @@ void BlockBasedTable::SetupForCompaction() {
       assert(false);
   }
   compaction_optimized_ = true;
-  */
 }
 
 std::shared_ptr<const TableProperties> BlockBasedTable::GetTableProperties()

table/cuckoo_table_reader_test.cc

@@ -522,7 +522,7 @@ void ReadKeys(uint64_t num, uint32_t batch_size) {
   float time_per_op = (env->NowMicros() - start_time) * 1.0 / num;
   fprintf(stderr,
       "Time taken per op is %.3fus (%.1f Mqps) with batch size of %u, "
-      "# of found keys %ld\n",
+      "# of found keys %" PRId64 "\n",
       time_per_op, 1.0 / time_per_op, batch_size, found_count);
 }
 }  // namespace.

table/full_filter_block_test.cc

@@ -30,7 +30,8 @@ class TestFilterBitsBuilder : public FilterBitsBuilder {
     for (size_t i = 0; i < hash_entries_.size(); i++) {
       EncodeFixed32(data + i * 4, hash_entries_[i]);
     }
-    buf->reset(data);
+    const char* const_data = data;
+    buf->reset(const_data);
     return Slice(data, len);
   }
 

util/env_test.cc

@@ -768,6 +768,41 @@ TEST(EnvPosixTest, LogBufferTest) {
   ASSERT_EQ(10, test_logger.char_x_count);
 }
 
+class TestLogger2 : public Logger {
+ public:
+  explicit TestLogger2(size_t max_log_size) : max_log_size_(max_log_size) {}
+  virtual void Logv(const char* format, va_list ap) override {
+    char new_format[2000];
+    std::fill_n(new_format, sizeof(new_format), '2');
+    {
+      va_list backup_ap;
+      va_copy(backup_ap, ap);
+      int n = vsnprintf(new_format, sizeof(new_format) - 1, format, backup_ap);
+      // 48 bytes for extra information + bytes allocated
+      ASSERT_TRUE(
+          n <= 48 + static_cast<int>(max_log_size_ - sizeof(struct timeval)));
+      ASSERT_TRUE(n > static_cast<int>(max_log_size_ - sizeof(struct timeval)));
+      va_end(backup_ap);
+    }
+  }
+  size_t max_log_size_;
+};
+
+TEST(EnvPosixTest, LogBufferMaxSizeTest) {
+  char bytes9000[9000];
+  std::fill_n(bytes9000, sizeof(bytes9000), '1');
+  bytes9000[sizeof(bytes9000) - 1] = '\0';
+
+  for (size_t max_log_size = 256; max_log_size <= 1024;
+       max_log_size += 1024 - 256) {
+    TestLogger2 test_logger(max_log_size);
+    test_logger.SetInfoLogLevel(InfoLogLevel::INFO_LEVEL);
+    LogBuffer log_buffer(InfoLogLevel::INFO_LEVEL, &test_logger);
+    LogToBuffer(&log_buffer, max_log_size, "%s", bytes9000);
+    log_buffer.FlushBufferToLog();
+  }
+}
+
 }  // namespace rocksdb
 
 int main(int argc, char** argv) {

util/log_buffer.cc

@@ -13,17 +13,17 @@ LogBuffer::LogBuffer(const InfoLogLevel log_level,
                      Logger*info_log)
     : log_level_(log_level), info_log_(info_log) {}
 
-void LogBuffer::AddLogToBuffer(const char* format, va_list ap) {
+void LogBuffer::AddLogToBuffer(size_t max_log_size, const char* format,
+                               va_list ap) {
   if (!info_log_ || log_level_ < info_log_->GetInfoLogLevel()) {
     // Skip the level because of its level.
     return;
   }
 
-  const size_t kLogSizeLimit = 512;
+  char* alloc_mem = arena_.AllocateAligned(max_log_size);
-  char* alloc_mem = arena_.AllocateAligned(kLogSizeLimit);
   BufferedLog* buffered_log = new (alloc_mem) BufferedLog();
   char* p = buffered_log->message;
-  char* limit = alloc_mem + kLogSizeLimit - 1;
+  char* limit = alloc_mem + max_log_size - 1;
 
   // store the time
   gettimeofday(&(buffered_log->now_tv), nullptr);
@@ -61,11 +61,22 @@ void LogBuffer::FlushBufferToLog() {
   logs_.clear();
 }
 
-void LogToBuffer(LogBuffer* log_buffer, const char* format, ...) {
+void LogToBuffer(LogBuffer* log_buffer, size_t max_log_size, const char* format,
+                 ...) {
   if (log_buffer != nullptr) {
     va_list ap;
     va_start(ap, format);
-    log_buffer->AddLogToBuffer(format, ap);
+    log_buffer->AddLogToBuffer(max_log_size, format, ap);
+    va_end(ap);
+  }
+}
+
+void LogToBuffer(LogBuffer* log_buffer, const char* format, ...) {
+  const size_t kDefaultMaxLogSize = 512;
+  if (log_buffer != nullptr) {
+    va_list ap;
+    va_start(ap, format);
+    log_buffer->AddLogToBuffer(kDefaultMaxLogSize, format, ap);
     va_end(ap);
   }
 }

util/log_buffer.h

@@ -21,8 +21,9 @@ class LogBuffer {
   // info_log:  logger to write the logs to
   LogBuffer(const InfoLogLevel log_level, Logger* info_log);
 
-  // Add a log entry to the buffer.
+  // Add a log entry to the buffer. Use default max_log_size.
-  void AddLogToBuffer(const char* format, va_list ap);
+  // max_log_size indicates maximize log size, including some metadata.
+  void AddLogToBuffer(size_t max_log_size, const char* format, va_list ap);
 
   size_t IsEmpty() const { return logs_.empty(); }
 
@@ -44,6 +45,10 @@ class LogBuffer {
 
 // Add log to the LogBuffer for a delayed info logging. It can be used when
 // we want to add some logs inside a mutex.
+// max_log_size indicates maximize log size, including some metadata.
+extern void LogToBuffer(LogBuffer* log_buffer, size_t max_log_size,
+                        const char* format, ...);
+// Same as previous function, but with default max log size.
 extern void LogToBuffer(LogBuffer* log_buffer, const char* format, ...);
 
 }  // namespace rocksdb

util/logging.cc

@@ -45,7 +45,7 @@ int AppendHumanBytes(uint64_t bytes, char* output, int len) {
 
 void AppendNumberTo(std::string* str, uint64_t num) {
   char buf[30];
-  snprintf(buf, sizeof(buf), "%llu", (unsigned long long) num);
+  snprintf(buf, sizeof(buf), "%" PRIu64, num);
   str->append(buf);
 }
 

util/logging.h

@@ -19,7 +19,6 @@
 namespace rocksdb {
 
 class Slice;
-class WritableFile;
 
 // Append a human-readable size in bytes
 int AppendHumanBytes(uint64_t bytes, char* output, int len);

util/options.cc

@@ -59,7 +59,8 @@ ImmutableCFOptions::ImmutableCFOptions(const Options& options)
     use_fsync(options.use_fsync),
     compression(options.compression),
     compression_per_level(options.compression_per_level),
-    compression_opts(options.compression_opts) {}
+    compression_opts(options.compression_opts),
+    access_hint_on_compaction_start(options.access_hint_on_compaction_start) {}
 
 ColumnFamilyOptions::ColumnFamilyOptions()
     : comparator(BytewiseComparator()),
@@ -273,8 +274,8 @@ void DBOptions::Dump(Logger* log) const {
     Log(log, "       Options.disableDataSync: %d", disableDataSync);
     Log(log, "             Options.use_fsync: %d", use_fsync);
     Log(log, "     Options.max_log_file_size: %zu", max_log_file_size);
-    Log(log, "Options.max_manifest_file_size: %lu",
+    Log(log, "Options.max_manifest_file_size: %" PRIu64,
-        (unsigned long)max_manifest_file_size);
+        max_manifest_file_size);
     Log(log, "     Options.log_file_time_to_roll: %zu", log_file_time_to_roll);
     Log(log, "     Options.keep_log_file_num: %zu", keep_log_file_num);
     Log(log, "       Options.allow_os_buffer: %d", allow_os_buffer);
@@ -290,16 +291,16 @@ void DBOptions::Dump(Logger* log) const {
         table_cache_numshardbits);
     Log(log, "    Options.table_cache_remove_scan_count_limit: %d",
         table_cache_remove_scan_count_limit);
-    Log(log, "    Options.delete_obsolete_files_period_micros: %lu",
+    Log(log, "    Options.delete_obsolete_files_period_micros: %" PRIu64,
-        (unsigned long)delete_obsolete_files_period_micros);
+        delete_obsolete_files_period_micros);
     Log(log, "             Options.max_background_compactions: %d",
         max_background_compactions);
     Log(log, "                 Options.max_background_flushes: %d",
         max_background_flushes);
-    Log(log, "                        Options.WAL_ttl_seconds: %lu",
+    Log(log, "                        Options.WAL_ttl_seconds: %" PRIu64,
-        (unsigned long)WAL_ttl_seconds);
+        WAL_ttl_seconds);
-    Log(log, "                      Options.WAL_size_limit_MB: %lu",
+    Log(log, "                      Options.WAL_size_limit_MB: %" PRIu64,
-        (unsigned long)WAL_size_limit_MB);
+        WAL_size_limit_MB);
     Log(log, "            Options.manifest_preallocation_size: %zu",
         manifest_preallocation_size);
     Log(log, "                         Options.allow_os_buffer: %d",
@@ -322,8 +323,8 @@ void DBOptions::Dump(Logger* log) const {
         use_adaptive_mutex);
     Log(log, "                            Options.rate_limiter: %p",
         rate_limiter.get());
-    Log(log, "                          Options.bytes_per_sync: %lu",
+    Log(log, "                          Options.bytes_per_sync: %" PRIu64,
-        (unsigned long)bytes_per_sync);
+        bytes_per_sync);
 }  // DBOptions::Dump
 
 void ColumnFamilyOptions::Dump(Logger* log) const {
@@ -371,20 +372,20 @@ void ColumnFamilyOptions::Dump(Logger* log) const {
         level0_stop_writes_trigger);
     Log(log,"               Options.max_mem_compaction_level: %d",
         max_mem_compaction_level);
-    Log(log,"                  Options.target_file_size_base: %d",
+    Log(log,"                  Options.target_file_size_base: %" PRIu64,
         target_file_size_base);
     Log(log,"            Options.target_file_size_multiplier: %d",
         target_file_size_multiplier);
-    Log(log,"               Options.max_bytes_for_level_base: %lu",
+    Log(log,"               Options.max_bytes_for_level_base: %" PRIu64,
-        (unsigned long)max_bytes_for_level_base);
+        max_bytes_for_level_base);
     Log(log,"         Options.max_bytes_for_level_multiplier: %d",
         max_bytes_for_level_multiplier);
     for (int i = 0; i < num_levels; i++) {
       Log(log,"Options.max_bytes_for_level_multiplier_addtl[%d]: %d",
           i, max_bytes_for_level_multiplier_additional[i]);
     }
-    Log(log,"      Options.max_sequential_skip_in_iterations: %lu",
+    Log(log,"      Options.max_sequential_skip_in_iterations: %" PRIu64,
-        (unsigned long)max_sequential_skip_in_iterations);
+        max_sequential_skip_in_iterations);
     Log(log,"             Options.expanded_compaction_factor: %d",
         expanded_compaction_factor);
     Log(log,"               Options.source_compaction_factor: %d",

util/options_helper.cc

@@ -177,7 +177,7 @@ bool GetOptionsFromStrings(
       } else if (o.first == "max_mem_compaction_level") {
         new_options->max_mem_compaction_level = ParseInt(o.second);
       } else if (o.first == "target_file_size_base") {
-        new_options->target_file_size_base = ParseInt(o.second);
+        new_options->target_file_size_base = ParseUint64(o.second);
       } else if (o.first == "target_file_size_multiplier") {
         new_options->target_file_size_multiplier = ParseInt(o.second);
       } else if (o.first == "max_bytes_for_level_base") {

util/options_test.cc

@@ -177,7 +177,7 @@ TEST(OptionsTest, GetOptionsFromStringsTest) {
   ASSERT_EQ(new_opt.level0_slowdown_writes_trigger, 9);
   ASSERT_EQ(new_opt.level0_stop_writes_trigger, 10);
   ASSERT_EQ(new_opt.max_mem_compaction_level, 11);
-  ASSERT_EQ(new_opt.target_file_size_base, 12);
+  ASSERT_EQ(new_opt.target_file_size_base, static_cast<uint64_t>(12));
   ASSERT_EQ(new_opt.target_file_size_multiplier, 13);
   ASSERT_EQ(new_opt.max_bytes_for_level_base, 14U);
   ASSERT_EQ(new_opt.max_bytes_for_level_multiplier, 15);

utilities/write_batch_with_index/write_batch_with_index.cc

@@ -20,7 +20,6 @@ class ReadableWriteBatch : public WriteBatch {
   Status GetEntryFromDataOffset(size_t data_offset, WriteType* type, Slice* Key,
                                 Slice* value, Slice* blob) const;
 };
-}  // namespace
 
 // Key used by skip list, as the binary searchable index of WriteBatchWithIndex.
 struct WriteBatchIndexEntry {
@@ -38,44 +37,28 @@ struct WriteBatchIndexEntry {
 
 class WriteBatchEntryComparator {
  public:
-  WriteBatchEntryComparator(const Comparator* comparator,
+  WriteBatchEntryComparator(const Comparator* default_comparator,
                             const ReadableWriteBatch* write_batch)
-      : comparator_(comparator), write_batch_(write_batch) {}
+      : default_comparator_(default_comparator), write_batch_(write_batch) {}
   // Compare a and b. Return a negative value if a is less than b, 0 if they
   // are equal, and a positive value if a is greater than b
   int operator()(const WriteBatchIndexEntry* entry1,
                  const WriteBatchIndexEntry* entry2) const;
 
+  void SetComparatorForCF(uint32_t column_family_id,
+                          const Comparator* comparator) {
+    cf_comparator_map_[column_family_id] = comparator;
+  }
+
  private:
-  const Comparator* comparator_;
+  const Comparator* default_comparator_;
+  std::unordered_map<uint32_t, const Comparator*> cf_comparator_map_;
   const ReadableWriteBatch* write_batch_;
 };
 
 typedef SkipList<WriteBatchIndexEntry*, const WriteBatchEntryComparator&>
     WriteBatchEntrySkipList;
 
-struct WriteBatchWithIndex::Rep {
-  Rep(const Comparator* index_comparator, size_t reserved_bytes = 0)
-      : write_batch(reserved_bytes),
-        comparator(index_comparator, &write_batch),
-        skip_list(comparator, &arena) {}
-  ReadableWriteBatch write_batch;
-  WriteBatchEntryComparator comparator;
-  Arena arena;
-  WriteBatchEntrySkipList skip_list;
-
-  WriteBatchIndexEntry* GetEntry(ColumnFamilyHandle* column_family) {
-    return GetEntryWithCfId(GetColumnFamilyID(column_family));
-  }
-
-  WriteBatchIndexEntry* GetEntryWithCfId(uint32_t column_family_id) {
-    auto* mem = arena.Allocate(sizeof(WriteBatchIndexEntry));
-    auto* index_entry = new (mem)
-        WriteBatchIndexEntry(write_batch.GetDataSize(), column_family_id);
-    return index_entry;
-  }
-};
-
 class WBWIIteratorImpl : public WBWIIterator {
  public:
   WBWIIteratorImpl(uint32_t column_family_id,
@@ -138,6 +121,35 @@ class WBWIIteratorImpl : public WBWIIterator {
     }
   }
 };
+}  // namespace
+
+struct WriteBatchWithIndex::Rep {
+  Rep(const Comparator* index_comparator, size_t reserved_bytes = 0)
+      : write_batch(reserved_bytes),
+        comparator(index_comparator, &write_batch),
+        skip_list(comparator, &arena) {}
+  ReadableWriteBatch write_batch;
+  WriteBatchEntryComparator comparator;
+  Arena arena;
+  WriteBatchEntrySkipList skip_list;
+
+  WriteBatchIndexEntry* GetEntry(ColumnFamilyHandle* column_family) {
+    uint32_t cf_id = GetColumnFamilyID(column_family);
+    const auto* cf_cmp = GetColumnFamilyUserComparator(column_family);
+    if (cf_cmp != nullptr) {
+      comparator.SetComparatorForCF(cf_id, cf_cmp);
+    }
+
+    return GetEntryWithCfId(cf_id);
+  }
+
+  WriteBatchIndexEntry* GetEntryWithCfId(uint32_t column_family_id) {
+    auto* mem = arena.Allocate(sizeof(WriteBatchIndexEntry));
+    auto* index_entry = new (mem)
+        WriteBatchIndexEntry(write_batch.GetDataSize(), column_family_id);
+    return index_entry;
+  }
+};
 
 Status ReadableWriteBatch::GetEntryFromDataOffset(size_t data_offset,
                                                   WriteType* type, Slice* Key,
@@ -179,9 +191,9 @@ Status ReadableWriteBatch::GetEntryFromDataOffset(size_t data_offset,
   return Status::OK();
 }
 
-WriteBatchWithIndex::WriteBatchWithIndex(const Comparator* index_comparator,
+WriteBatchWithIndex::WriteBatchWithIndex(
-                                         size_t reserved_bytes)
+    const Comparator* default_index_comparator, size_t reserved_bytes)
-    : rep(new Rep(index_comparator, reserved_bytes)) {}
+    : rep(new Rep(default_index_comparator, reserved_bytes)) {}
 
 WriteBatchWithIndex::~WriteBatchWithIndex() { delete rep; }
 
@@ -287,7 +299,14 @@ int WriteBatchEntryComparator::operator()(
     key2 = *(entry2->search_key);
   }
 
-  int cmp = comparator_->Compare(key1, key2);
+  int cmp;
+  auto comparator_for_cf = cf_comparator_map_.find(entry1->column_family);
+  if (comparator_for_cf != cf_comparator_map_.end()) {
+    cmp = comparator_for_cf->second->Compare(key1, key2);
+  } else {
+    cmp = default_comparator_->Compare(key1, key2);
+  }
+
   if (cmp != 0) {
     return cmp;
   } else if (entry1->offset > entry2->offset) {

utilities/write_batch_with_index/write_batch_with_index_test.cc

@@ -19,12 +19,16 @@ namespace rocksdb {
 namespace {
 class ColumnFamilyHandleImplDummy : public ColumnFamilyHandleImpl {
  public:
-  explicit ColumnFamilyHandleImplDummy(int id)
+  explicit ColumnFamilyHandleImplDummy(int id, const Comparator* comparator)
-      : ColumnFamilyHandleImpl(nullptr, nullptr, nullptr), id_(id) {}
+      : ColumnFamilyHandleImpl(nullptr, nullptr, nullptr),
+        id_(id),
+        comparator_(comparator) {}
   uint32_t GetID() const override { return id_; }
+  const Comparator* user_comparator() const override { return comparator_; }
 
  private:
   uint32_t id_;
+  const Comparator* comparator_;
 };
 
 struct Entry {
@@ -90,8 +94,9 @@ TEST(WriteBatchWithIndexTest, TestValueAsSecondaryIndex) {
     index_map[e.value].push_back(&e);
   }
 
-  WriteBatchWithIndex batch(BytewiseComparator(), 20);
+  WriteBatchWithIndex batch(nullptr, 20);
-  ColumnFamilyHandleImplDummy data(6), index(8);
+  ColumnFamilyHandleImplDummy data(6, BytewiseComparator());
+  ColumnFamilyHandleImplDummy index(8, BytewiseComparator());
   for (auto& e : entries) {
     if (e.type == kPutRecord) {
       batch.Put(&data, e.key, e.value);
@@ -230,6 +235,107 @@ TEST(WriteBatchWithIndexTest, TestValueAsSecondaryIndex) {
   }
 }
 
+class ReverseComparator : public Comparator {
+ public:
+  ReverseComparator() {}
+
+  virtual const char* Name() const override {
+    return "rocksdb.ReverseComparator";
+  }
+
+  virtual int Compare(const Slice& a, const Slice& b) const override {
+    return 0 - BytewiseComparator()->Compare(a, b);
+  }
+
+  virtual void FindShortestSeparator(std::string* start,
+                                     const Slice& limit) const {}
+  virtual void FindShortSuccessor(std::string* key) const {}
+};
+
+TEST(WriteBatchWithIndexTest, TestComparatorForCF) {
+  ReverseComparator reverse_cmp;
+  ColumnFamilyHandleImplDummy cf1(6, nullptr);
+  ColumnFamilyHandleImplDummy reverse_cf(66, &reverse_cmp);
+  ColumnFamilyHandleImplDummy cf2(88, BytewiseComparator());
+  WriteBatchWithIndex batch(BytewiseComparator(), 20);
+
+  batch.Put(&cf1, "ddd", "");
+  batch.Put(&cf2, "aaa", "");
+  batch.Put(&cf2, "eee", "");
+  batch.Put(&cf1, "ccc", "");
+  batch.Put(&reverse_cf, "a11", "");
+  batch.Put(&cf1, "bbb", "");
+  batch.Put(&reverse_cf, "a33", "");
+  batch.Put(&reverse_cf, "a22", "");
+
+  {
+    std::unique_ptr<WBWIIterator> iter(batch.NewIterator(&cf1));
+    iter->Seek("");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("bbb", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("ccc", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("ddd", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(!iter->Valid());
+  }
+
+  {
+    std::unique_ptr<WBWIIterator> iter(batch.NewIterator(&cf2));
+    iter->Seek("");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("aaa", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("eee", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(!iter->Valid());
+  }
+
+  {
+    std::unique_ptr<WBWIIterator> iter(batch.NewIterator(&reverse_cf));
+    iter->Seek("");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(!iter->Valid());
+
+    iter->Seek("z");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("a33", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("a22", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("a11", iter->Entry().key.ToString());
+    iter->Next();
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(!iter->Valid());
+
+    iter->Seek("a22");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("a22", iter->Entry().key.ToString());
+
+    iter->Seek("a13");
+    ASSERT_OK(iter->status());
+    ASSERT_TRUE(iter->Valid());
+    ASSERT_EQ("a11", iter->Entry().key.ToString());
+  }
+}
+
 }  // namespace
 
 int main(int argc, char** argv) { return rocksdb::test::RunAllTests(); }