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https://issues.apache.org/jira/browse/YARN-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952328#comment-14952328
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zhihai xu commented on YARN-4247:
---------------------------------

[~adhoot], thanks for working on this issue, Is this issue fixed by YARN-3361? 
YARN-3361 removed {{readLock}} from {{RMAppAttemptImpl #getMasterContainer}}.

> Deadlock in FSAppAttempt and RMAppAttemptImpl causes RM to stop processing 
> events
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-4247
>                 URL: https://issues.apache.org/jira/browse/YARN-4247
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler, resourcemanager
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>            Priority: Blocker
>         Attachments: YARN-4247.001.patch, YARN-4247.001.patch
>
>
> We see this deadlock in our testing where events do not get processed and we 
> see this in the logs before the RM dies of OOM {noformat} 2015-10-08 
> 04:48:01,918 INFO org.apache.hadoop.yarn.event.AsyncDispatcher: Size of 
> event-queue is 1488000 2015-10-08 04:48:01,918 INFO 
> org.apache.hadoop.yarn.event.AsyncDispatcher: Size of event-queue is 1488000 
> {noformat}



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