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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-7053) Timed out tasks can fail to produce thread dump
Date Fri, 16 Feb 2018 15:20:00 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Payne updated MAPREDUCE-7053:
----------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.2
                   2.8.4
                   2.9.1
                   2.10.0
                   3.1.0
           Status: Resolved  (was: Patch Available)

> 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, 3.0.2
>
>         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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