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https://issues.apache.org/jira/browse/MAPREDUCE-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057633#comment-13057633
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Harsh J commented on MAPREDUCE-2632:
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Ravi,
Sorry for much noise! Not sure I understand your comment above… 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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