- FIFO compaction to support Intra L0 compaction too with CompactionOptionsFIFO.allow_compaction=true.
- Statistics::Reset() to reset user stats.
- ldb add option –try_load_options, which will open DB with its own option file.
- Introduce WriteBatch::PopSavePoint to pop the most recent save point explicitly.
- Support dynamically change
max_open_files option via SetDBOptions()
- Added DB::CreateColumnFamilie() and DB::DropColumnFamilies() to bulk create/drop column families.
- Add debugging function
GetAllKeyVersions to see internal versions of a range of keys.
- Support file ingestion with universal compaction style
- Support file ingestion behind with option
- New option enable_pipelined_write which may improve write throughput in case writing from multiple threads and WAL enabled.
- Fix the bug that Direct I/O uses direct reads for non-SST file
- Fix the bug that flush doesn’t respond to fsync result