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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4250) NPE in AppSchedulingInfo#isRequestLabelChanged
Date Wed, 14 Oct 2015 04:43:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-4250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14956249#comment-14956249
] 

Sunil G commented on YARN-4250:
-------------------------------

Hi Bibin, 
At first look, I also feel  it's slightly confusing what we try to achieve here. On a closer
analysis,  this does handle all cases. So you could try give a detailed comment about the
cases which is handled by this truth expression. 

> NPE in AppSchedulingInfo#isRequestLabelChanged
> ----------------------------------------------
>
>                 Key: YARN-4250
>                 URL: https://issues.apache.org/jira/browse/YARN-4250
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>            Priority: Blocker
>         Attachments: YARN-4250-002.patch, YARN-4250-003.patch, YARN-4250.patch
>
>
>  *Trace* 
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.isRequestLabelChanged(AppSchedulingInfo.java:420)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.updateResourceRequests(AppSchedulingInfo.java:342)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt.updateResourceRequests(SchedulerApplicationAttempt.java:300)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.allocate(FifoScheduler.java:350)
> 	at org.apache.hadoop.yarn.client.api.impl.TestAMRMClientOnRMRestart$MyFifoScheduler.allocate(TestAMRMClientOnRMRestart.java:544)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.allocate(ApplicationMasterService.java:507)
> 	at org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.allocate(AMRMClientImpl.java:277)
> 	at org.apache.hadoop.yarn.client.api.impl.TestAMRMClientOnRMRestart.testAMRMClientResendsRequestsOnRMRestart(TestAMRMClientOnRMRestart.java:187)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> 	at java.lang.reflect.Method.invoke(Unknown Source)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}



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