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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2632) Avoid calling the partitioner when the numReduceTasks is 1.
Date Thu, 30 Jun 2011 05:48:28 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057633#comment-13057633

Harsh J commented on MAPREDUCE-2632:


Sorry for much noise! Not sure I understand your comment aboveā€¦ Do you intend to only apply
fixes to some of the other remaining Partitioner implementations or is this change going to
be deeper than that (as I'd thought)?

> Avoid calling the partitioner when the numReduceTasks is 1.
> -----------------------------------------------------------
>                 Key: MAPREDUCE-2632
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2632
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tasktracker
>    Affects Versions: 0.23.0
>            Reporter: Ravi Teja Ch N V
> We can avoid the call to the partitioner when the number of reducers is 1.This will avoid
the unnecessary computations by the partitioner.

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