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https://issues.apache.org/jira/browse/YARN-9262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758145#comment-16758145
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Wilfred Spiegelenburg commented on YARN-9262:
---------------------------------------------
The failure occurs because no {{Allocation}} object comes back as the {{when}}
mock call does not fit the arguments. When the AM gets allocated we have
{{null}} values in 3 places and the {{when}} should look like this:
{code}
when(scheduler.allocate(any(ApplicationAttemptId.class), any(List.class),
any(), any(List.class), any(), any(),
any(ContainerUpdates.class))).
{code}
> TestRMAppAttemptTransitions is failing with an NPE
> --------------------------------------------------
>
> Key: YARN-9262
> URL: https://issues.apache.org/jira/browse/YARN-9262
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.2.0, 3.1.2, 3.3.0
> Reporter: Sunil Govindan
> Assignee: lujie
> Priority: Critical
>
> hadoop.yarn.server.resourcemanager.rmapp.attempt.TestRMAppAttemptTransitions
> fails due to an NPE post YARN-9194
> {code}
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl$AMContainerAllocatedTransition.transition(RMAppAttemptImpl.java:1202)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl$AMContainerAllocatedTransition.transition(RMAppAttemptImpl.java:1182)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.access$500(StateMachineFactory.java:46)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:487)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.handle(RMAppAttemptImpl.java:915)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.handle(RMAppAttemptImpl.java:121)
> {code}
> cc [~xiaoheipangzi]
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