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From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17662) Disable in-memory flush when eplaying from WAL
Date Sun, 19 Feb 2017 09:33:44 GMT
Anastasia Braginsky created HBASE-17662:

             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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