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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6563) ConcurrentModificationException in TimelineCollectorManager while stopping RM
Date Tue, 09 May 2017 18:06:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-6563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16003191#comment-16003191
] 

Vrushali C commented on YARN-6563:
----------------------------------

+ 1 LGTM

Will commit it shortly. 

> ConcurrentModificationException in TimelineCollectorManager while stopping RM
> -----------------------------------------------------------------------------
>
>                 Key: YARN-6563
>                 URL: https://issues.apache.org/jira/browse/YARN-6563
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Haibo Chen
>         Attachments: YARN-6563.00.patch
>
>
> It is seen that ConcurrentModificationException while stopping RM when ATSv2 enabled.

> {noformat}
> 2017-05-05 15:04:11,563 WARN org.apache.hadoop.service.CompositeService: When stopping
the service org.apache.hadoop.yarn.server.resourcemanager.timelineservice.RMTimelineCollectorManager
: java.util.ConcurrentModificationException
> java.util.ConcurrentModificationException
> 	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
> 	at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
> 	at org.apache.hadoop.yarn.server.timelineservice.collector.TimelineCollectorManager.serviceStop(TimelineCollectorManager.java:222)
> 	at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
> 	at org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
> 	at org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
> 	at org.apache.hadoop.service.CompositeService.stop(CompositeService.java:157)
> 	at org.apache.hadoop.service.CompositeService.serviceStop(CompositeService.java:131)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStop(ResourceManager.java:1285)
> {noformat}



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