- update to 8.6.7
* Fixed a bug where compaction read under non direct IO still falls back to RocksDB internal prefetching after file system's prefetching returns non-OK status other than Status::NotSupported()
* For non direct IO, eliminate the file system prefetching attempt for compaction read when Options::compaction_readahead_size is 0
- update to 8.6.6
* Fix a bug with atomic_flush=true that can cause DB to stuck after a flush fails
* Fix a bug where RocksDB (with atomic_flush=false) can delete output SST files of pending flushes when a previous concurrent flush fails
* When the compressed secondary cache capacity is reduced to 0, it should be completely disabled. Before this fix, inserts and lookups would still go to the backing LRUCache
- update to 8.6.5
* Fixed a bug where rocksdb.file.read.verify.file.checksums.micros is not populated.
- update to 8.6.4
* Public API change: Add a column family option default_temperature that is used for file reading accounting purpose, such as io statistics, for files that don't have an explicitly set temperature.
- update to 8.6.3
* Fix a bug where if there is an error reading from offset 0 of a file from L1+ and that the file is not the first file in the sorted run, data can be lost in compaction and read/scan can return incorrect results.
* Fix a bug where iterator may return incorrect result for DeleteRange() users if there was an error reading from a file.
- update to 8.6.2
* Fix for async_io where during seek, when reading a block for seeking a target key in a file without any readahead, the iterator aligned the read on a page boundary and reading more than necessary. This increased the storage read bandwidth usage.
- update to 8.6.1
* Options::compaction_readahead_size 's default value is changed from 0 to 2MB.
* Compaction read performance will regress when Options::compaction_readahead_size is explicitly set to 0
- update to 8.6.0
* Added enhanced data integrity checking on SST files with new format_version=6.
* Add a new feature to trim readahead_size during scans upto upper_bound when iterate_upper_bound is specified.
* RocksDB will compare the number of input keys to the number of keys processed after each compaction.
* Add a CF option bottommost_file_compaction_delay to allow specifying the delay of bottommost level single-file compactions.
* Add support to allow enabling / disabling user-defined timestamps feature for an existing column family in combination with the in-Memtable only feature.
* Implement a new admission policy for the compressed secondary cache that admits blocks evicted from the primary cache with the hit bit set.
* Add a column family option memtable_max_range_deletions that limits the number of range deletions in a memtable.
* Add PutEntity API in sst_file_writer
* Add timeout in microsecond option to WaitForCompactOptions
* New statistics rocksdb.file.read.{get|multiget|db.iterator|verify.checksum|verify.file.checksums}.micros measure read time of block-based SST tables or blob files during db open, Get(), MultiGet(), using db iterator, VerifyFileChecksums() and VerifyChecksum(). They require stats level greater than StatsLevel::kExceptDetailedTimers.