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Posted to yarn-issues@hadoop.apache.org by "Wei Yan (JIRA)" <ji...@apache.org> on 2014/05/21 03:03:56 UTC

[jira] [Commented] (YARN-2073) FairScheduler starts preempting resources even with free resources on the cluster

    [ https://issues.apache.org/jira/browse/YARN-2073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004175#comment-14004175 ] 

Wei Yan commented on YARN-2073:
-------------------------------

[~kasha], if we move preemption-related test code to a separate .java file, we may also need to move the previous preemption-related test functions (testChoiceOfPreemptedContainers and testPreemptionDecision) to the new file. 

And so next step we'll divide the TestFairScheduler into several test files according to different scheduler operations?

> FairScheduler starts preempting resources even with free resources on the cluster
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-2073
>                 URL: https://issues.apache.org/jira/browse/YARN-2073
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 2.4.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Critical
>         Attachments: yarn-2073-0.patch, yarn-2073-1.patch
>
>
> Preemption should kick in only when the currently available slots don't match the request. 



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