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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15819) Cleanup unused lock in MultiVersionConsistencyControl in branch-1.0 and 1.1
Date Thu, 12 May 2016 09:58:12 GMT
Jingcheng Du created HBASE-15819:
------------------------------------

             Summary: Cleanup unused lock in MultiVersionConsistencyControl in branch-1.0
and 1.1
                 Key: HBASE-15819
                 URL: https://issues.apache.org/jira/browse/HBASE-15819
             Project: HBase
          Issue Type: Bug
          Components: regionserver
            Reporter: Jingcheng Du
            Assignee: Jingcheng Du


In MultiVersionConsistencyControl of branch-1.0 and branch-1.1, there is a unused lock readWaiters,
it is only referenced by {{boolean advanceMemstore(WriteEntry e)}},
{code}
    if (nextReadValue > 0) {
      synchronized (readWaiters) {
        readWaiters.notifyAll();
      }
    }
{code}.
Thus the readerWaiters.notifyAll() is not necessary, and could be cleaned up from the code.



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