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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12217) System load average based client pushback
Date Fri, 19 Dec 2014 19:54:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-12217:
-----------------------------------
    Summary: System load average based client pushback  (was: Load based client pushback)

> 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
>
> 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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