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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6346) Observed excessive CPU on "quiescent" cluster
Date Tue, 10 Jul 2012 18:22:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13410654#comment-13410654
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Andrew Purtell commented on HBASE-6346:
---------------------------------------

bq. Yeah what's that config Andy? I may have encountered the same problem.

I don't think so. It was a misconfiguration of secure ZooKeeper. Not a problem under local
profiling, but chewing CPU up on the cluster.
                
> Observed excessive CPU on "quiescent" cluster
> ---------------------------------------------
>
>                 Key: HBASE-6346
>                 URL: https://issues.apache.org/jira/browse/HBASE-6346
>             Project: HBase
>          Issue Type: Bug
>         Environment: Sun JRE 6u33, Hadoop 2.0.1-alpha, HBase 0.94.1-SNAPSHOT
>            Reporter: Andrew Purtell
>         Attachments: graph.gif, jstack.txt, runnable_cpu_profile.png
>
>
> I've only started looking at this but became concerned when a completely quiescent cluster
loads up 20% CPU (system+user) once HBase comes up.

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