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From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-300) After YARN-271, fair scheduler can infinite loop and not schedule any application.
Date Wed, 02 Jan 2013 19:04:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542298#comment-13542298
] 

Sandy Ryza commented on YARN-300:
---------------------------------

For YARN-271, Alejandro recommended that it would look best to add the check as the while
loop's condition.  Uploaded a patch that does that. 
                
> After YARN-271, fair scheduler can infinite loop and not schedule any application.
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-300
>                 URL: https://issues.apache.org/jira/browse/YARN-300
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager, scheduler
>            Reporter: shenhong
>              Labels: None
>             Fix For: 2.0.3-alpha
>
>         Attachments: YARN-300.patch, YARN-300.patch
>
>   Original Estimate: 10h
>  Remaining Estimate: 10h
>
> After yarn-271, when yarn.scheduler.fair.max.assign<=0, when a node was been reserved,
fairScheduler will  infinite loop and not schedule any application.

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