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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (MAPREDUCE-7053) Timed out tasks can fail to produce thread dump
Date Mon, 07 May 2018 13:16:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367455#comment-16367455
] 

Eric Payne edited comment on MAPREDUCE-7053 at 5/7/18 1:15 PM:
---------------------------------------------------------------

Thanks [~jlowe].

I committed MAPREDUCE-7053.001.patch to trunk, and cherry-picked to branch-3.1, branch-3.0,
and -branch-3.0.1-.
 I committed MAPREDUCE-7053-branch-2.001.patch branch-2, branch-2.9 and branch-2.8


was (Author: eepayne):
Thanks [~jlowe].

I committed MAPREDUCE-7053.001.patch to trunk, and cherry-picked to branch-3.1, branch-3.0,
and branch-3.0.1.
I committed MAPREDUCE-7053-branch-2.001.patch branch-2, branch-2.9 and branch-2.8

> Timed out tasks can fail to produce thread dump
> -----------------------------------------------
>
>                 Key: MAPREDUCE-7053
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7053
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 3.1.0, 3.0.1, 2.10.0, 2.9.1, 2.8.4
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Major
>             Fix For: 3.1.0, 2.10.0, 2.9.1, 2.8.4, 3.0.3
>
>         Attachments: MAPREDUCE-7053-branch-2.001.patch, MAPREDUCE-7053.001.patch
>
>
> TestMRJobs#testThreadDumpOnTaskTimeout has been failing sporadically recently.  When
the AM times out a task it immediately removes it from the list of known tasks and then connects
to the NM to request a thread dump followed by a kill.  If the task heartbeats in after the
task has been removed from the list of known tasks but before the thread dump signal arrives
then the task can exit with a "org.apache.hadoop.mapred.Task: Parent died." message and no
thread dump.



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