[jira] [Commented] (MAPREDUCE-6801) Fix flaky TestKill.testKillJob()

["Yussuf Shaikh (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610814#comment-15610814 ] 

Yussuf Shaikh commented on MAPREDUCE-6801:
------------------------------------------

Please check comment on MAPREDUCE-6802 for ppc, tried this on x86 multiple times and it did not fail. But fails around 2 times out of 10 on Power-RHEL machine.

> Fix flaky TestKill.testKillJob()
> --------------------------------
>
>                 Key: MAPREDUCE-6801
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6801
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>
> TestKill.testKillJob often fails for the same reason with the following error message:
> {code}
> 1 tests failed.
> FAILED:  org.apache.hadoop.mapreduce.v2.app.TestKill.testKillJob
> Error Message:
> Task state not correct expected:<KILLED> but was:<NEW/SCHEDULED/RUNNING>
> Stack Trace:
> java.lang.AssertionError: Task state not correct expected:<KILLED> but was:<NEW/SCHEDULED/RUNNING>
> 	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.apache.hadoop.mapreduce.v2.app.TestKill.testKillJob(TestKill.java:84)
> {code}
> The root cause is that when the job is in KILLED state from an external view, TaskKillEvents and TaskAttemptKillEvents placed on the event loop queue may not have been processed by the dispatcher thread.



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