Fixed a formatting issue in HISTORY.md

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Ramkumar Vadivelu 2020-11-17 14:18:54 -08:00
parent 518431d78e
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# Rocksdb Change Log
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## Unreleased
### Behavior Changes
* Attempting to write a merge operand without explicitly configuring `merge_operator` now fails immediately, causing the DB to enter read-only mode. Previously, failure was deferred until the `merge_operator` was needed by a user read or a background operation.
## 6.15.0 (11/13/2020)
### Bug Fixes
* Fixed a bug in the following combination of features: indexes with user keys (`format_version >= 3`), indexes are partitioned (`index_type == kTwoLevelIndexSearch`), and some index partitions are pinned in memory (`BlockBasedTableOptions::pin_l0_filter_and_index_blocks_in_cache`). The bug could cause keys to be truncated when read from the index leading to wrong read results or other unexpected behavior.