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https://issues.apache.org/jira/browse/HBASE-15819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingcheng Du updated HBASE-15819:
---------------------------------
Status: Patch Available (was: Open)
> 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
> Attachments: HBASE-15819-branch-1.0.patch,
> HBASE-15819-branch-1.1.patch
>
>
> 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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