1--- 2title: RocksDB 3.5 Release! 3layout: post 4author: leijin 5category: blog 6redirect_from: 7 - /blog/1547/rocksdb-3-5-release/ 8--- 9 10New RocksDB release - 3.5! 11 12 13**New Features** 14 15 16 1. Add include/utilities/write_batch_with_index.h, providing a utility class to query data out of WriteBatch when building it. 17 18 19 2. new ReadOptions.total_order_seek to force total order seek when block-based table is built with hash index. 20 21<!--truncate--> 22 23**Public API changes** 24 25 26 1. The Prefix Extractor used with V2 compaction filters is now passed user key to SliceTransform::Transform instead of unparsed RocksDB key. 27 28 29 2. Move BlockBasedTable related options to BlockBasedTableOptions from Options. Change corresponding JNI interface. Options affected include: no_block_cache, block_cache, block_cache_compressed, block_size, block_size_deviation, block_restart_interval, filter_policy, whole_key_filtering. filter_policy is changed to shared_ptr from a raw pointer. 30 31 32 3. Remove deprecated options: disable_seek_compaction and db_stats_log_interval 33 34 35 4. OptimizeForPointLookup() takes one parameter for block cache size. It now builds hash index, bloom filter, and block cache. 36 37 38[https://github.com/facebook/rocksdb/releases/tag/v3.5](https://github.com/facebook/rocksdb/releases/tag/rocksdb-3.5) 39