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update history for OnBackgroundError and DeleteRange fix

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Summary:
Mentioned changes:
- #2477
- #2503
Closes https://github.com/facebook/rocksdb/pull/2528

Differential Revision: D5360185

Pulled By: ajkr

fbshipit-source-id: 59d6ae465bcb0aa0a739317581fa3fc7871c6de6
This commit is contained in:
Andrew Kryczka 2017-06-30 16:45:44 -07:00 committed by Facebook Github Bot
parent 1cb8c6de63
commit f4ae1bab02
1 changed files with 4 additions and 0 deletions
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HISTORY.md
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@ -7,6 +7,10 @@
* Measure estimated number of reads per file. The information can be accessed through DB::GetColumnFamilyMetaData or "rocksdb.sstables" DB property.
* RateLimiter support for throttling background reads, or throttling the sum of background reads and writes. This can give more predictable I/O usage when compaction reads more data than it writes, e.g., due to lots of deletions.
* [Experimental] FIFO compaction with TTL support. It can be enabled by setting CompactionOptionsFIFO.ttl > 0.
* Introduce `EventListener::OnBackgroundError()` callback. Users can implement it to be notified of errors causing the DB to enter read-only mode, and optionally override them.
### Bug Fixes
* Fix discarding empty compaction output files when `DeleteRange()` is used together with subcompactions.
## 5.6.0 (06/06/2017)
### Public API Change