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https://issues.apache.org/jira/browse/HBASE-16146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567624#comment-15567624
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Hudson commented on HBASE-16146:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #1770 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/1770/])
HBASE-16146 Remove thread local usage in Counter (garyh: rev
7b0acc292e1854b09c6cedc4dae1f6dae07779bf)
* (edit) hbase-common/src/main/java/org/apache/hadoop/hbase/util/Counter.java
> Counters are expensive...
> -------------------------
>
> Key: HBASE-16146
> URL: https://issues.apache.org/jira/browse/HBASE-16146
> Project: HBase
> Issue Type: Sub-task
> Reporter: stack
> Assignee: Gary Helmling
> Fix For: 2.0.0, 1.3.0, 1.4.0
>
> Attachments: HBASE-16146.001.patch, HBASE-16146.branch-1.001.patch,
> HBASE-16146.branch-1.3.001.patch, counters.patch, less_and_less_counters.png
>
>
> Doing workloadc, perf shows 10%+ of CPU being spent on counter#add. If I
> disable some of the hot ones -- see patch -- I can get 10% more throughput
> (390k to 440k). Figure something better.
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