facebook/rocksdb v11.1.1

RocksDB 11.1.1

on GitHub

11.1.1 (04/10/2026)

Public API Changes

• Changed experimental feature ExternalTableReader::Get and ExternalTableReader::MultiGet to use PinnableSlice instead of std::string for output values, enabling zero-copy pinning. This will break existing implementations.
• Added SstFileReader::Get and SstFileReader::MultiGet overloads that accept PinnableSlice/std::vector<PinnableSlice>*, enabling zero-copy reads when the underlying TableReader supports pinning.
• Added block_decompress_count to PerfContext

Bug Fixes

• Fix a memory accounting leak in IODispatcher where ReadIndex() moved block values out of ReadSet without releasing the associated prefetch memory, causing subsequent prefetches to be blocked when max_prefetch_memory_bytes was set.

11.1.0 (03/23/2026)

New Features

• Add a new option open_files_async. The existing behavior is on DB open, we open all sst files and do basic validations. For very large DBs on remote filesystems with many ssts, this may take very long. This option performs these validations instead in the background. Open errors found by this async background task are surfaced as a new background error kAsyncFileOpen.
• Added BlockBasedTableOptions::kAuto index block search type that automatically selects between binary and interpolation search on a per-index-block basis. During SST construction, each index block's key distribution uniformity is analyzed using the coefficient of variation of key gaps, and index blocks with uniform keys use interpolation search while others fall back to binary search. The uniformity threshold is configurable via BlockBasedTableOptions::uniform_cv_threshold (default: 0.2).
• Introduced enforce_write_buffer_manager_during_recovery option to allow WriteBufferManager to be enforced during WAL recovery. (Default: true)
• Add memtable_batch_lookup_optimization option to use batch lookup optimization for memtable MultiGet. For skip list memtables, after each key lookup, the search path is cached and reused for the next key, reducing per-key cost from O(log N) to O(log d) where d is the distance between consecutive keys. Benchmarks show ~7% improvement in memtable-resident MultiGet throughput.
• Added BlockBasedTableOptions::PrepopulateBlockCache::kFlushAndCompaction to prepopulate the block cache during both flush and compaction. Compaction-warmed blocks are inserted at BOTTOM priority (vs LOW for flush) so they are evicted first under cache pressure. Recommended only for use cases where most or all of the database is expected to reside in cache (e.g., tiered or remote storage where the working set fits in cache).
• Added new mutable DB option verify_manifest_content_on_close (default: false). When enabled, on DB close the MANIFEST file is read back and all records are validated (CRC checksums and logical content). If corruption is detected, a fresh MANIFEST is written from in-memory state.

Behavior Changes

• num_reads_sampled now factors in re-seeks and next/prev() on file iterators for files in L1+. next/prev() is discounted by 64x compared to seek due to being a much cheaper call.
• Remote compaction workers now skip WAL recovery when opening the secondary DB instance, since only the LSM state from MANIFEST is needed for compaction. This reduces I/O and speeds up remote compaction startup.

Bug Fixes

• Fix a bug in round-robin compaction that missed selecting input files that are needed to guarantee data correctness and cause crashing in debug builds or silent data corruption in release builds for Get().