[jira] [Commented] (HBASE-12217) System load average based client pushback

["Mikhail Antonov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-12217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15337287#comment-15337287 ] 

Mikhail Antonov commented on HBASE-12217:
-----------------------------------------

Adaptive load control is totally something we should start doing more of; but now kicking out of 1.3

> 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
>             Fix For: 2.0.0, 1.3.0
>
>
> 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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