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Posted to common-dev@hadoop.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2007/01/08 07:05:27 UTC

[jira] Updated: (HADOOP-600) Race condition in JobTracker updating the task tracker's status while declaring it lost

     [ https://issues.apache.org/jira/browse/HADOOP-600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Owen O'Malley updated HADOOP-600:
---------------------------------

    Fix Version/s: 0.10.1

> Race condition in JobTracker updating the task tracker's status while declaring it lost
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-600
>                 URL: https://issues.apache.org/jira/browse/HADOOP-600
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.7.1
>            Reporter: Owen O'Malley
>         Assigned To: Owen O'Malley
>             Fix For: 0.10.1
>
>
> There was a case where the JobTracker lost track of a set of tasks that were on a task tracker. It appears to be a race condition because the ExpireTrackers thread doesn't lock the JobTracker while updating the state. The fix would be to build a list of dead task trackers and then lock the job tracker while updating their status.

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