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https://issues.apache.org/jira/browse/YARN-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328312#comment-14328312
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Siqi Li commented on YARN-3231:
-------------------------------

The problem seems come from MaxRunningAppsEnforcer, I will upload a patch 
shortly

> FairScheduler changing queueMaxRunningApps on the fly will cause all pending 
> job stuck
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-3231
>                 URL: https://issues.apache.org/jira/browse/YARN-3231
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Siqi Li
>
> When a queue is piling up with a lot of pending jobs due to the 
> maxRunningApps limit. We want to increase this property on the fly to make 
> some of the pending job active. However, once we increase the limit, all 
> pending jobs were not assigned any resource, and were stuck forever.



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