[jira] [Commented] (MAPREDUCE-7020) Task timeout in uber mode can crash AM

["Peter Bacsko (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322624#comment-16322624 ] 

Peter Bacsko commented on MAPREDUCE-7020:
-----------------------------------------

Oops, {{done()}} was removed by accident. It should be there, obviously.

I'll check tomorrow whether reduce has similar problems.

Not calling {{System.exit()}} is a good idea. In general, I don't like exit calls at random places, it should be used more carefully.

> Task timeout in uber mode can crash AM
> --------------------------------------
>
>                 Key: MAPREDUCE-7020
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7020
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am
>    Affects Versions: 3.1.0, 3.0.1, 2.10.0, 2.9.1, 2.8.4, 2.7.6
>            Reporter: Akira Ajisaka
>            Assignee: Peter Bacsko
>         Attachments: MAPREDUCE-7020-001.patch
>
>
> TestUberAM is failing
> {noformat}
> java.lang.AssertionError: No AppMaster log found! expected:<1> but was:<2>
> 	at org.junit.Assert.fail(Assert.java:88)
> 	at org.junit.Assert.failNotEquals(Assert.java:743)
> 	at org.junit.Assert.assertEquals(Assert.java:118)
> 	at org.junit.Assert.assertEquals(Assert.java:555)
> 	at org.apache.hadoop.mapreduce.v2.TestMRJobs.testThreadDumpOnTaskTimeout(TestMRJobs.java:1228)
> 	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$1.runReflectiveCall(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}
> https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/614/testReport/junit/org.apache.hadoop.mapreduce.v2/TestUberAM/testThreadDumpOnTaskTimeout/



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