Devaraj K created MAPREDUCE-4261:
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             Summary: MRAppMaster throws NPE while stopping RMContainerAllocator service
                 Key: MAPREDUCE-4261
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4261
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mr-am
    Affects Versions: 2.0.0, 3.0.0
            Reporter: Devaraj K
            Assignee: Devaraj K


{code:xml}
2012-05-16 18:55:54,222 INFO [Thread-1] org.apache.hadoop.yarn.service.CompositeService: Error stopping org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerLauncherRouter
java.lang.NullPointerException
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerLauncherRouter.stop(MRAppMaster.java:716)
	at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:99)
	at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:89)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1036)
	at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
2012-05-16 18:55:54,222 INFO [Thread-1] org.apache.hadoop.yarn.service.CompositeService: Error stopping org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerAllocatorRouter
java.lang.NullPointerException
	at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.getStat(RMContainerAllocator.java:521)
	at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.stop(RMContainerAllocator.java:227)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerAllocatorRouter.stop(MRAppMaster.java:668)
	at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:99)
	at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:89)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1036)
	at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
{code}

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