rocksdb/java/HISTORY-JAVA.md

RocksJava Change Log

3.13 (8/4/2015)

New Features

• Exposed BackupEngine API.
• Added CappedPrefixExtractor support. To use such extractor, simply call useCappedPrefixExtractor in either Options or ColumnFamilyOptions.
• Added RemoveEmptyValueCompactionFilter.

3.10.0 (3/24/2015)

New Features

• Added compression per level API.
• MemEnv is now available in RocksJava via RocksMemEnv class.
• lz4 compression is now included in rocksjava static library when running make rocksdbjavastatic.

Public API Changes

• Overflowing a size_t when setting rocksdb options now throws an IllegalArgumentException, which removes the necessity for a developer to catch these Exceptions explicitly.
• The set and get functions for tableCacheRemoveScanCountLimit are deprecated.

By 01/31/2015

New Features

• WriteBatchWithIndex support.
• Iterator support for WriteBatch and WriteBatchWithIndex
• GetUpdatesSince support.
• Snapshots carry now information about the related sequence number.
• TTL DB support.

By 11/14/2014

New Features

• Full support for Column Family.
• Slice and Comparator support.
• Default merge operator support.
• RateLimiter support.

By 06/15/2014

New Features

• Added basic Java binding for rocksdb::Env such that multiple RocksDB can share the same thread pool and environment.
• Added RestoreBackupableDB

By 05/30/2014

Internal Framework Improvement

• Added disOwnNativeHandle to RocksObject, which allows a RocksObject to give-up the ownership of its native handle. This method is useful when sharing and transferring the ownership of RocksDB C++ resources.

By 05/15/2014

New Features

• Added RocksObject --- the base class of all RocksDB classes which holds some RocksDB resources in the C++ side.
• Use environmental variable JAVA_HOME in Makefile for RocksJava

Public API changes

• Renamed org.rocksdb.Iterator to org.rocksdb.RocksIterator to avoid potential confliction with Java built-in Iterator.

By 04/30/2014

New Features

• Added Java binding for MultiGet.
• Added static method RocksDB.loadLibrary(), which loads necessary library files.
• Added Java bindings for 60+ rocksdb::Options.
• Added Java binding for BloomFilter.
• Added Java binding for ReadOptions.
• Added Java binding for memtables.
• Added Java binding for sst formats.
• Added Java binding for RocksDB Iterator which enables sequential scan operation.
• Added Java binding for Statistics
• Added Java binding for BackupableDB.

DB Benchmark

• Added filluniquerandom, readseq benchmark.
• 70+ command-line options.
• Enabled BloomFilter configuration.

By 04/15/2014

New Features

• Added Java binding for WriteOptions.
• Added Java binding for WriteBatch, which enables batch-write.
• Added Java binding for rocksdb::Options.
• Added Java binding for block cache.
• Added Java version DB Benchmark.

DB Benchmark

• Added readwhilewriting benchmark.

Internal Framework Improvement

• Avoid a potential byte-array-copy between c++ and Java in RocksDB.get.
• Added SizeUnit in org.rocksdb.util to store consts like KB and GB.

03/28/2014

• RocksJava project started.
• Added Java binding for RocksDB, which supports Open, Close, Get and Put.