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https://issues.apache.org/jira/browse/HBASE-7633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13559114#comment-13559114
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stack commented on HBASE-7633:
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bq. ...translates into tuning hbase.regionserver.handler.count. Do we have a
good example of interpreting that value?
Not really other than if they are backed up frequently and we're not blocked on
cpu or io, then bump them up (Is this for another issue [~fwiffo]?) Thanks
boss.
> Add a metric that tracks the current number of used RPC threads on the
> regionservers
> ------------------------------------------------------------------------------------
>
> Key: HBASE-7633
> URL: https://issues.apache.org/jira/browse/HBASE-7633
> Project: HBase
> Issue Type: Improvement
> Reporter: Joey Echeverria
> Assignee: Elliott Clark
>
> One way to detect that you're hitting a "John Wayne" disk[1] would be if we
> could see when region servers exhausted their RPC handlers. This would also
> be useful when tuning the cluster for your workload to make sure that reads
> or writes were not starving the other operations out.
> [1] http://hbase.apache.org/book.html#bad.disk
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