facebook/rocksdb v10.2.1 on GitHub

10.2.1 (04/24/2025)

Provide histogram stats COMPACTION_PREFETCH_BYTES to measure number of bytes for RocksDB's prefetching (as opposed to file
system's prefetch) on SST file during compaction read
A new API DB::GetNewestUserDefinedTimestamp is added to return the newest user defined timestamp seen in a column family
Introduce API IngestWriteBatchWithIndex() for ingesting updates into DB while bypassing memtable writes. This improves performance when writing a large write batch to the DB.
Add a new CF option memtable_op_scan_flush_trigger that triggers a flush of the memtable if an iterator's Seek()/Next() scans over a certain number of invisible entries from the memtable.

AdvancedColumnFamilyOptions.max_write_buffer_number_to_maintain is deleted. It's deprecated since introduction of a better option max_write_buffer_size_to_maintain since RocksDB 6.5.0.
Deprecated API DB::MaxMemCompactionLevel().
Deprecated ReadOptions::ignore_range_deletions.
Deprecated API experimental::PromoteL0().
Added arbitrary string map for additional options to be overriden for remote compactions
The fail_if_options_file_error option in DBOptions has been removed. The behavior now is to always return failure in any API that fails to persist the OPTIONS file.

Make stats PREFETCH_BYTES_USEFUL, PREFETCH_HITS, PREFETCH_BYTES only account for prefetching during user initiated scan

Fix a bug in Posix file system that the FSWritableFile created via FileSystem::ReopenWritableFile internally does not track the correct file size.
Fix a bug where tail size of remote compaction output is not persisted in primary db's manifest