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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4330) TaskAttemptCompletedEventTransition invalidates previously successful attempt without checking if the newly completed attempt is successful
Date Sat, 02 May 2015 04:32:08 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524674#comment-14524674
] 

Hadoop QA commented on MAPREDUCE-4330:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12578792/MAPREDUCE-4330-20130415.1.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5523/console |


This message was automatically generated.

> TaskAttemptCompletedEventTransition invalidates previously successful attempt without
checking if the newly completed attempt is successful
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4330
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4330
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.23.1
>            Reporter: Bikas Saha
>            Assignee: Omkar Vinit Joshi
>         Attachments: MAPREDUCE-4330-20130415.1.patch, MAPREDUCE-4330-20130415.patch,
MAPREDUCE-4330-21032013.1.patch, MAPREDUCE-4330-21032013.patch
>
>
> The previously completed attempt is removed from successAttemptCompletionEventNoMap and
marked OBSOLETE.
> After that, if the newly completed attempt is successful then it is added to the successAttemptCompletionEventNoMap.

> This seems wrong because the newly completed attempt could be failed and thus there is
no need to invalidate the successful attempt.
> One error case would be when a speculative attempt completes with killed/failed after
the successful version has completed.



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