[jira] Updated: (MAPREDUCE-913) TaskRunner crashes with NPE resulting in held up slots, UNINITIALIZED tasks and hung TaskTracker

["Vinod K V (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod K V updated MAPREDUCE-913:
--------------------------------

    Attachment: MAPREDUCE-913-20091119.1.txt

The previous patch by Sreekanth still leaves other possibilities of a hung unusable slot. This patch addresses all those issues.

The test(written by Sreekanth) verifies the regression - without the code changes in the patch, the test times out and with the changes, it passes.

> TaskRunner crashes with NPE resulting in held up slots, UNINITIALIZED tasks and hung TaskTracker
> ------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-913
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-913
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>    Affects Versions: 0.20.1
>            Reporter: Vinod K V
>            Priority: Blocker
>             Fix For: 0.21.0
>
>         Attachments: mapreduce-913-1.patch, MAPREDUCE-913-20091119.1.txt
>
>


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