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https://issues.apache.org/jira/browse/HBASE-6346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-6346:
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Attachment: jstack.txt
runnable_cpu_profile.png
graph.gif
See attached graph.gif. Attached as runnable_cpu_profile.png is a snapshot of
what jprofiler sees of a 2.0.1+0.94.1 HBase process started in-tree as
'./bin/hbase master start'. I've also attached a stack dump so you can see it
is doing "nothing".
> Metrics updating may be using excessive CPU
> -------------------------------------------
>
> 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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