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From "Rohith (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3145) ConcurrentModificationException on CapacityScheduler ParentQueue#getQueueUserAclInfo
Date Thu, 05 Feb 2015 06:27:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-3145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306726#comment-14306726
] 

Rohith commented on YARN-3145:
------------------------------

[~jianhe] I am looking into problem,is it from trunk version? I could not see line number
matching!!
The scenario I think is refreshQueue has been triggered concurrently by removing childqueues.
Is this is the case in your scenario?

> ConcurrentModificationException on CapacityScheduler ParentQueue#getQueueUserAclInfo
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-3145
>                 URL: https://issues.apache.org/jira/browse/YARN-3145
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Rohith
>         Attachments: YARN-3145.001.patch
>
>
> {code}
> ava.util.ConcurrentModificationException(java.util.ConcurrentModificationException
> at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1115)
> at java.util.TreeMap$KeyIterator.next(TreeMap.java:1169)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.getQueueUserAclInfo(ParentQueue.java:347)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.getQueueUserAclInfo(ParentQueue.java:348)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.getQueueUserAclInfo(CapacityScheduler.java:850)
> at org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.getQueueUserAcls(ClientRMService.java:844)
> at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.getQueueUserAcls(ApplicationClientProtocolPBServiceImpl.java:250)
> at org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:335)
> {code}



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