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Posted to issues@hbase.apache.org by "Elliott Clark (JIRA)" <ji...@apache.org> on 2015/12/29 05:21:49 UTC

[jira] [Created] (HBASE-15047) Try spin lock for MVCC completion

Elliott Clark created HBASE-15047:
-------------------------------------

             Summary: Try spin lock for MVCC completion
                 Key: HBASE-15047
                 URL: https://issues.apache.org/jira/browse/HBASE-15047
             Project: HBase
          Issue Type: Bug
            Reporter: Elliott Clark
            Assignee: Elliott Clark


Waits/Notify is very very expensive since it can cost a thread scheduling. There should only ever be a few threads ( < Num Cores ) running. So it should be possible to spin and use compare and swap to update the read point.



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