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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
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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:
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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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