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https://issues.apache.org/jira/browse/MAPREDUCE-5743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13893120#comment-13893120
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Vinod Kumar Vavilapalli commented on MAPREDUCE-5743:
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bq. Similar fix was proposed in mapreduce-5719-v2.txt
Sorry Ted, I missed that context. Zhijie, can you please credit Ted also with
the patch? Please update the JIRA Assignee and CHANGES.txt too. Thanks.
> TestRMContainerAllocator is failing
> -----------------------------------
>
> Key: MAPREDUCE-5743
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5743
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.3.0
> Reporter: Ted Yu
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 2.3.0
>
> Attachments: MAPREDUCE-5743.txt, mapreduce-5719-v1.txt,
> mapreduce-5719-v2.txt, mapreduce-5719-v3.txt
>
>
> From https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1666/console :
> {code}
> Tests run: 14, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 63.12 sec
> <<< FAILURE! - in org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator
> testCompletedTasksRecalculateSchedule(org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator)
> Time elapsed: 2.083 sec <<< ERROR!
> org.apache.hadoop.yarn.exceptions.YarnRuntimeException:
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler.getTransferredContainers(AbstractYarnScheduler.java:50)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.registerApplicationMaster(ApplicationMasterService.java:277)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator.register(RMCommunicator.java:154)
> at
> org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator$MyContainerAllocator.register(TestRMContainerAllocator.java:1476)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator.serviceStart(RMCommunicator.java:112)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.serviceStart(RMContainerAllocator.java:219)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator$MyContainerAllocator.<init>(TestRMContainerAllocator.java:1444)
> at
> org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator$RecalculateContainerAllocator.<init>(TestRMContainerAllocator.java:1629)
> at
> org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator.testCompletedTasksRecalculateSchedule(TestRMContainerAllocator.java:1665)
> {code}
> In above case getMasterContainer() returned null.
> AbstractYarnScheduler#getTransferredContainers() should check such condition.
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