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Bibin A Chundatt commented on YARN-4250: ---------------------------------------- Small correction in comment. In {{ApplicationMasterService#allocate}} null labels are getting changed to NO_LABEL so label *should not be null* in requests after the below. Also if you agree please change defect description too. > 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: Critical > Attachments: 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} -- This message was sent by Atlassian JIRA (v6.3.4#6332)