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Yulin Niu resolved HBASE-25442. ------------------------------- Resolution: Won't Fix > Refactor MultiVersionConcurrencyControl: replace readWaiters.notifyAll() with > WriteEntry.notify() > ------------------------------------------------------------------------------------------------- > > Key: HBASE-25442 > URL: https://issues.apache.org/jira/browse/HBASE-25442 > Project: HBase > Issue Type: Improvement > Reporter: Yulin Niu > Assignee: Yulin Niu > Priority: Minor > Attachments: 50M-performance.pdf > > > [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MultiVersionConcurrencyControl.java#L217] > > here the notifyAll() wake up all thread, even the read point no big enough, > bring extra thread switch > [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MultiVersionConcurrencyControl.java#L143] > > WriteEntry object can be thread local to reuse -- This message was sent by Atlassian Jira (v8.3.4#803005)