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Posted to mapreduce-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2012/11/17 00:25:12 UTC

[jira] [Updated] (MAPREDUCE-2217) The expire launching task should cover the UNASSIGNED task

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated MAPREDUCE-2217:
----------------------------------------

    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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