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https://issues.apache.org/jira/browse/YARN-325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy reassigned YARN-325:
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Assignee: Arun C Murthy
> RM CapacityScheduler can deadlock when getQueueInfo() is called and a
> container is completing
> ---------------------------------------------------------------------------------------------
>
> Key: YARN-325
> URL: https://issues.apache.org/jira/browse/YARN-325
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacityscheduler
> Affects Versions: 2.0.2-alpha, 0.23.5
> Reporter: Jason Lowe
> Assignee: Arun C Murthy
> Priority: Critical
>
> If a client calls getQueueInfo on a parent queue (e.g.: the root queue) and
> containers are completing then the RM can deadlock. getQueueInfo() locks the
> ParentQueue and then calls the child queues' getQueueInfo() methods in turn.
> However when a container completes, it locks the LeafQueue then calls back
> into the ParentQueue. When the two mix, it's a recipe for deadlock.
> Stacktrace to follow.
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