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https://issues.apache.org/jira/browse/YARN-2313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065294#comment-14065294
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Hadoop QA commented on YARN-2313:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12656305/rm-stack-trace.txt
against trunk revision .
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/4347//console
This message is automatically generated.
> Livelock can occur on FairScheduler when there are lots entry in queue
> ----------------------------------------------------------------------
>
> Key: YARN-2313
> URL: https://issues.apache.org/jira/browse/YARN-2313
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 2.4.1
> Reporter: Tsuyoshi OZAWA
> Assignee: Tsuyoshi OZAWA
> Attachments: YARN-2313.1.patch, rm-stack-trace.txt
>
>
> Observed livelock on FairScheduler when there are lots entry in queue. After
> my investigating code, following case can occur:
> 1. {{update()}} called by UpdateThread takes longer times than
> UPDATE_INTERVAL(500ms) if there are lots queue.
> 2. UpdateThread goes busy loop.
> 3. Other threads(AllocationFileReloader,
> ResourceManager$SchedulerEventDispatcher) can wait forever.
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