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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1847) capacity scheduler job tasks summaries are wrong if nodes fail
Date Tue, 08 Jun 2010 22:36:12 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876842#action_12876842
] 

Allen Wittenauer commented on MAPREDUCE-1847:
---------------------------------------------

While doing some work on the grid, I killed 4 task trackers.  For one particular task, the
summary information still believed that tasks were running on those nodes:

6 running reduce tasks using 6 reduce slots.

This was clearly impossible, as there were only 2 pending reduce tasks that still had to be
recomputed.  The map task summary information was correct.

> capacity scheduler job tasks summaries are wrong if nodes fail
> --------------------------------------------------------------
>
>                 Key: MAPREDUCE-1847
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1847
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>            Reporter: Allen Wittenauer
>            Priority: Minor
>
> The Job Scheduling Information the web UI is needs to be re-computed in case nodes fail.
 Otherwise it will report tasks are running that are not.

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