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https://issues.apache.org/jira/browse/HBASE-12217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111993#comment-16111993
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stack commented on HBASE-12217:
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Unscheduling good idea that has not seen progress in a while.
> System load average based client pushback
> -----------------------------------------
>
> Key: HBASE-12217
> URL: https://issues.apache.org/jira/browse/HBASE-12217
> Project: HBase
> Issue Type: New Feature
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
>
> If a RegionServer host is already heavily loaded* then it might not be best
> to accept more work in the form of coprocessor invocations. This could
> generalize to all RPC work, perhaps as part of a broader admission control
> initiative, but I think it makes sense to start small in an obvious place.
> *: We could use % CPU utilization or the UNIX 1min or 5min load average to
> determine this, and provide an option for choosing between those
> alternatives.
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