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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2012/07/07 01:59:34 UTC

[jira] [Updated] (HBASE-6346) Observed excessive CPU on "quiescent" cluster

     [ https://issues.apache.org/jira/browse/HBASE-6346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-6346:
----------------------------------

    Summary: Observed excessive CPU on "quiescent" cluster  (was: Metrics updating may be using excessive CPU)
    
> Observed excessive CPU on "quiescent" cluster
> ---------------------------------------------
>
>                 Key: HBASE-6346
>                 URL: https://issues.apache.org/jira/browse/HBASE-6346
>             Project: HBase
>          Issue Type: Bug
>         Environment: 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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