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Posted to mapreduce-issues@hadoop.apache.org by "Tianming Mao (JIRA)" <ji...@apache.org> on 2014/06/26 12:21:25 UTC

[jira] [Commented] (MAPREDUCE-533) Support task preemption in Capacity Scheduler

    [ https://issues.apache.org/jira/browse/MAPREDUCE-533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14044544#comment-14044544 ] 

Tianming Mao commented on MAPREDUCE-533:
----------------------------------------

Any updates on this?

> Support task preemption in Capacity Scheduler
> ---------------------------------------------
>
>                 Key: MAPREDUCE-533
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-533
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: capacity-sched
>            Reporter: Tsz Wo Nicholas Sze
>
> Without preemption, it is not possible to guarantee capacity since long running jobs may occupy task slots for an arbitrarily long time.



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