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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: expose-bug-mr-2217.patch
Sorry for the delay, just got around to this.
Uploading a patch that exposes the bug on clusters with some hosts with a 1 in
their hostname. Running a sample pi job with 4 nodes with common prefix
followed by 01-04, results in the job hanging at 75% map progress.
> 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: Karthik Kambatla
> Fix For: 0.24.0
>
> Attachments: expose-bug-mr-2217.patch, 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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