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update history for BottommostLevelCompaction::kForceOptimized to mention possible impact to users
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Zhongyi Xie 2019-04-24 16:04:13 -07:00 committed by GitHub
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@ -11,7 +11,7 @@
### Public API Change
* Change the behavior of OptimizeForPointLookup(): move away from hash-based block-based-table index, and use whole key memtable filtering.
* Change the behavior of OptimizeForSmallDb(): use a 16MB block cache, put index and filter blocks into it, and cost the memtable size to it. DBOptions.OptimizeForSmallDb() and ColumnFamilyOptions.OptimizeForSmallDb() start to take an optional cache object.
* Added BottommostLevelCompaction::kForceOptimized to avoid double compacting newly compacted files in bottom level compaction of manual compaction.
* Added BottommostLevelCompaction::kForceOptimized to avoid double compacting newly compacted files in the bottommost level compaction of manual compaction. Note this option may prohibit the manual compaction to produce a single file in the bottommost level.
### Bug Fixes
* Adjust WriteBufferManager's dummy entry size to block cache from 1MB to 256KB.