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https://issues.apache.org/jira/browse/YARN-3762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated YARN-3762:
-----------------------------------
            Priority: Critical  (was: Blocker)
    Target Version/s: 2.8.0  (was: 2.7.1)

> FairScheduler: CME on FSParentQueue#getQueueUserAclInfo
> -------------------------------------------------------
>
>                 Key: YARN-3762
>                 URL: https://issues.apache.org/jira/browse/YARN-3762
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Critical
>         Attachments: yarn-3762-1.patch, yarn-3762-1.patch
>
>
> In our testing, we ran into the following ConcurrentModificationException:
> {noformat}
> halxg.cloudera.com:8042, nodeRackName/rackvb07, nodeNumContainers0
> 15/05/22 13:02:22 INFO distributedshell.Client: Queue info, 
> queueName=root.testyarnpool3, queueCurrentCapacity=0.0, 
> queueMaxCapacity=-1.0, queueApplicationCount=0, queueChildQueueCount=0
> 15/05/22 13:02:22 FATAL distributedshell.Client: Error running Client
> java.util.ConcurrentModificationException: 
> java.util.ConcurrentModificationException
>       at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
>       at java.util.ArrayList$Itr.next(ArrayList.java:851)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSParentQueue.getQueueUserAclInfo(FSParentQueue.java:155)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.getQueueUserAclInfo(FairScheduler.java:1395)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.getQueueUserAcls(ClientRMService.java:880)
> {noformat}



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