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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5282) Running tasks on lost trackers are incorrectly logging the attempt and task failures
Date Fri, 20 Feb 2009 05:10:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675243#action_12675243
] 

Hemanth Yamijala commented on HADOOP-5282:
------------------------------------------

Looked at the patch. This looks fine. One minor comment is to replace the nested conditional
statement with a more clear if..else if..else block as it is really hard to read the current
code.

Please run test-patch and ant tests and upload the results.

> Running tasks on lost trackers are incorrectly logging the attempt and task failures
> ------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5282
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5282
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>            Priority: Blocker
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-5282-v1.0.patch
>
>
> If a running attempt is lost on a tracker, a attempt-level cleanup with the same attempt-id
is launched for it. In such cases the events are not logged correctly and instead of logging
> {code}
> Task Reduce Start
> Attempt Reduce Start
> Attempt Reduce Killed 
> Task reduce Killed
> {code}
> it logs
> {code}
> Task Reduce Start
> Task Reduce Failed
> Attempt Reduce Start
> Attempt Reduce Killed 
> {code}

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