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Yanqin Jin
2035798834
Update TransactionUtil::CheckKeyForConflict to also use timestamps ( #9162 )
...
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9162
Existing TransactionUtil::CheckKeyForConflict() performs only seq-based
conflict checking. If user-defined timestamp is enabled, it should perform
conflict checking based on timestamps too.
Update TransactionUtil::CheckKey-related methods to verify the timestamp of the
latest version of a key is smaller than the read timestamp. Note that
CheckKeysForConflict() is not updated since it's used only by optimistic
transaction, and we do not plan to update it in this upcoming batch of diffs.
Existing GetLatestSequenceForKey() returns the sequence of the latest
version of a specific user key. Since we support user-defined timestamp, we
need to update this method to also return the timestamp (if enabled) of the
latest version of the key. This will be needed for snapshot validation.
Reviewed By: ltamasi
Differential Revision: D31567960
fbshipit-source-id: 2e4a14aed267435a9aa91bc632d2411c01946d44
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