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https://issues.apache.org/jira/browse/HBASE-10156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13875129#comment-13875129
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stack commented on HBASE-10156:
-------------------------------

Looking for a review please.  Does some cleanup of HLog, gets us back some of 
the perf we lost when we moved to new thread model (hbase-8755) when low 
contention.  As side benefit, it improves perf when high contention.  Downside 
is refactor of critical FSHLog class.  Am testing on cluster over here meantime.

> Fix up the HBASE-8755 slowdown when low contention
> --------------------------------------------------
>
>                 Key: HBASE-10156
>                 URL: https://issues.apache.org/jira/browse/HBASE-10156
>             Project: HBase
>          Issue Type: Sub-task
>          Components: wal
>            Reporter: stack
>            Assignee: stack
>         Attachments: 10156.txt, 10156v10.txt, 10156v11.txt, 10156v12.txt, 
> 10156v12.txt, 10156v13.txt, 10156v16.txt, 10156v17.txt, 10156v18.txt, 
> 10156v2.txt, 10156v3.txt, 10156v4.txt, 10156v5.txt, 10156v6.txt, 10156v7.txt, 
> 10156v9.txt, Disrupting.java
>
>
> HBASE-8755 slows our writes when only a few clients.  Fix.



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