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https://issues.apache.org/jira/browse/YARN-9540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918649#comment-16918649
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Adam Antal commented on YARN-9540:
----------------------------------
So I assume you investigated the case, and found out that the dispatcher may
takes more time to handle the ATTEMPT_FINISHED event. It sounds like an obvious
conclusion.
Could you please tell me how frequent was the failures (for e.g. from 1000 runs
how much failure do we have)? Also, did you verified that after applying your
patch it is not flaky anymore?
Otherwise it's +1 (non-binding) from me.
> TestRMAppTransitions fails intermittently
> -----------------------------------------
>
> Key: YARN-9540
> URL: https://issues.apache.org/jira/browse/YARN-9540
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager, test
> Affects Versions: 3.2.0
> Reporter: Prabhu Joseph
> Assignee: Tao Yang
> Priority: Minor
> Attachments: YARN-9540.001.patch
>
>
> Failed
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.TestRMAppTransitions.testAppFinishedFinished[0]
> {code}
> Error Message
> expected:<1> but was:<0>
> Stacktrace
> java.lang.AssertionError: expected:<1> but was:<0>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:645)
> at org.junit.Assert.assertEquals(Assert.java:631)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.TestRMAppTransitions.verifyAppCompletedEvent(TestRMAppTransitions.java:1307)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.TestRMAppTransitions.verifyAppAfterFinishEvent(TestRMAppTransitions.java:1302)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.TestRMAppTransitions.testCreateAppFinished(TestRMAppTransitions.java:648)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.TestRMAppTransitions.testAppFinishedFinished(TestRMAppTransitions.java:1083)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runners.Suite.runChild(Suite.java:128)
> at org.junit.runners.Suite.runChild(Suite.java:27)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
> at
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
> at
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
> at
> org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
> {code}
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