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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4582) [MAPREDUCE-3902] ScheduledRequests#remove should remove the elements from mapsHostMapping and mapsRackMapping
Date Tue, 04 Sep 2012 18:19:07 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13447882#comment-13447882
] 

Siddharth Seth commented on MAPREDUCE-4582:
-------------------------------------------

bq. removing entries from attemptToLaunchRequestMap needs to happen after the ScheduledRequests.remove
call.
handleTaStopRequest removes the task attempt from attemptToLaunchRequestMap before it attempts
to remove the attempt from ScheduledRequests. By the previous comment, I meant this order
of removal needs to be fixed.
                
> [MAPREDUCE-3902] ScheduledRequests#remove should remove the elements from mapsHostMapping
and mapsRackMapping
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4582
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4582
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>    Affects Versions: MR-3902
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>            Priority: Minor
>         Attachments: MAPREDUCE-4582.2.patch, MAPREDUCE-4582.3.patch, MAPREDUCE-4582.patch
>
>
> ScheduledRequests#remove only remove the specified TaskAttemptId from "maps".
> It's inefficient, and the method should remove the elements from mapsHostMapping and
mapsRackMapping.

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