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Posted to issues@hbase.apache.org by "Anastasia Braginsky (JIRA)" <ji...@apache.org> on 2017/02/19 09:33:44 UTC

[jira] [Created] (HBASE-17662) Disable in-memory flush when eplaying from WAL

Anastasia Braginsky created HBASE-17662:
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             Summary: Disable in-memory flush when eplaying from WAL
                 Key: HBASE-17662
                 URL: https://issues.apache.org/jira/browse/HBASE-17662
             Project: HBase
          Issue Type: Sub-task
            Reporter: Anastasia Braginsky


When replaying the edits from WAL, the region's updateLock is not taken, because a single threaded action is assumed. However, the thread-safeness of the in-memory flush of CompactingMemStore is based on taking the region's updateLock. 

The in-memory flush can be skipped in the replay time (anyway everything is flushed to disk just after the replay). Therefore it is acceptable to just skip the in-memory flush action while the updates come as part of replay from WAL.



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