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Posted to common-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2009/06/20 02:24:07 UTC

[jira] Created: (HADOOP-6096) Support task preemption in Capacity Scheduler

Support task preemption in Capacity Scheduler
---------------------------------------------

                 Key: HADOOP-6096
                 URL: https://issues.apache.org/jira/browse/HADOOP-6096
             Project: Hadoop Core
          Issue Type: New Feature
          Components: contrib/capacity-sched
            Reporter: Tsz Wo (Nicholas), SZE


Without preemption, it is not possible to guarantee capacity since long running jobs may occupy task slots of an arbitrarily long time.

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[jira] Commented: (HADOOP-6096) Support task preemption in Capacity Scheduler

Posted by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-6096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12722101#action_12722101 ] 

Tsz Wo (Nicholas), SZE commented on HADOOP-6096:
------------------------------------------------

See also [this example|https://issues.apache.org/jira/browse/HADOOP-5701?focusedCommentId=12700284&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12700284].

> Support task preemption in Capacity Scheduler
> ---------------------------------------------
>
>                 Key: HADOOP-6096
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6096
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/capacity-sched
>            Reporter: Tsz Wo (Nicholas), SZE
>
> Without preemption, it is not possible to guarantee capacity since long running jobs may occupy task slots of an arbitrarily long time.

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