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https://issues.apache.org/jira/browse/MAPREDUCE-2217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated MAPREDUCE-2217:
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Attachment: MR-2217.patch
Uploading the same patch generated off of branch-1.
We noticed this issue when one of the task trackers was faulty, and the
unassigned tasks on that TaskTracker were not expired leading to job
incompletion.
+1 for the patch.
> The expire launching task should cover the UNASSIGNED task
> ----------------------------------------------------------
>
> Key: MAPREDUCE-2217
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2217
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Affects Versions: 0.23.0
> Reporter: Scott Chen
> Assignee: Scott Chen
> Fix For: 0.24.0
>
> Attachments: MAPREDUCE-2217.1.txt, MR-2217.patch
>
>
> The ExpireLaunchingTask thread kills the task that are scheduled but not
> responded.
> Currently if a task is scheduled on tasktracker and for some reason
> tasktracker cannot put it to RUNNING.
> The task will just hang in the UNASSIGNED status and JobTracker will keep
> waiting for it.
> JobTracker.ExpireLaunchingTask should be able to kill this task.
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