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Posted to mapreduce-issues@hadoop.apache.org by "Scott Chen (JIRA)" <ji...@apache.org> on 2012/11/21 23:20:58 UTC

[jira] [Commented] (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:comment-tabpanel&focusedCommentId=13502374#comment-13502374 ] 

Scott Chen commented on MAPREDUCE-2217:
---------------------------------------

Karthik: Thank you for working on this.
                
> 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: 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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