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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-182) lost task trackers should not update status of completed jobs
Date Thu, 04 May 2006 18:54:19 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-182?page=all ]

Owen O'Malley updated HADOOP-182:
---------------------------------

    Attachment: lost-tracker.patch

This patch fixes:
  1. subtracting the progress for failed tasks
  2. completed/failedTask methods now update the status
  3. only fail maps and reduces that are currently running
  4. remove a few unused imports and a method

> lost task trackers should not update status of completed jobs
> -------------------------------------------------------------
>
>          Key: HADOOP-182
>          URL: http://issues.apache.org/jira/browse/HADOOP-182
>      Project: Hadoop
>         Type: Bug

>   Components: mapred
>     Versions: 0.1.1
>     Reporter: Owen O'Malley
>     Assignee: Owen O'Malley
>     Priority: Minor
>      Fix For: 0.3
>  Attachments: lost-tracker.patch
>
> When a Task Tracker is lost (by not sending a heartbeat for 10 minutes), the JobTracker
marks the tasks that were active on that node as failed. There are two issues:
>    1. No task from a completed or failed job should be modified.
>    2. No reduces should be marked as failed, since their output is in dfs and therefore
not only on the dead node.

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