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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1374) Resource Manager fails to start due to ConcurrentModificationException
Date Wed, 30 Oct 2013 21:45:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-1374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13809664#comment-13809664
] 

Karthik Kambatla commented on YARN-1374:
----------------------------------------

I see the issue. Will upload a patch shortly to add the SchedulingMonitor to RMActiveServices.

> Resource Manager fails to start due to ConcurrentModificationException
> ----------------------------------------------------------------------
>
>                 Key: YARN-1374
>                 URL: https://issues.apache.org/jira/browse/YARN-1374
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.3.0
>            Reporter: Devaraj K
>            Assignee: Karthik Kambatla
>            Priority: Blocker
>
> Resource Manager is failing to start with the below ConcurrentModificationException.
> {code:xml}
> 2013-10-30 20:22:42,371 INFO org.apache.hadoop.util.HostsFileReader: Refreshing hosts
(include/exclude) list
> 2013-10-30 20:22:42,376 INFO org.apache.hadoop.service.AbstractService: Service ResourceManager
failed in state INITED; cause: java.util.ConcurrentModificationException
> java.util.ConcurrentModificationException
> 	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> 	at java.util.AbstractList$Itr.next(AbstractList.java:343)
> 	at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
> 	at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:187)
> 	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:944)
> 2013-10-30 20:22:42,378 INFO org.apache.hadoop.yarn.server.resourcemanager.RMHAProtocolService:
Transitioning to standby
> 2013-10-30 20:22:42,378 INFO org.apache.hadoop.yarn.server.resourcemanager.RMHAProtocolService:
Transitioned to standby
> 2013-10-30 20:22:42,378 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Error starting ResourceManager
> java.util.ConcurrentModificationException
> 	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> 	at java.util.AbstractList$Itr.next(AbstractList.java:343)
> 	at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
> 	at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:187)
> 	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:944)
> 2013-10-30 20:22:42,379 INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
SHUTDOWN_MSG: 
> /************************************************************
> SHUTDOWN_MSG: Shutting down ResourceManager at HOST-10-18-40-24/10.18.40.24
> ************************************************************/
> {code}



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