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Update HISTORY.md for PR7329 (#7355)

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Summary:
As title.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7355

Reviewed By: pdillinger

Differential Revision: D23566635

Pulled By: riversand963

fbshipit-source-id: f8d846bcff637e7617b764b7bfb9a948ea18d195
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Yanqin Jin 2020-09-08 11:08:49 -07:00 committed by Facebook GitHub Bot
parent b175eceb09
commit 8307d4400c
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HISTORY.md
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@ -24,6 +24,7 @@
* Expose kTypeDeleteWithTimestamp in EntryType and update GetEntryType() accordingly.
* Added file_checksum and file_checksum_func_name to TableFileCreationInfo, which can pass the table file checksum information through the OnTableFileCreated callback during flush and compaction.
* A warning is added to `DB::DeleteFile()` API describing its known problems and deprecation plan.
* Add a new stats level, i.e. StatsLevel::kExceptTickers (PR7329) to exclude tickers even if application passes a non-null Statistics object.
### Behavior Changes
* File abstraction `FSRandomAccessFile.Prefetch()` default return status is changed from `OK` to `NotSupported`. If the user inherited file doesn't implement prefetch, RocksDB will create internal prefetch buffer to improve read performance.