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https://issues.apache.org/jira/browse/MAPREDUCE-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sunil G updated MAPREDUCE-2632:
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Attachment: 0001-MAPREDUCE-2632.patch
Seems patch is not as per latest trunk.
i rebased and applied. Patch still is valid.
Doing as part of BugBash
> 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
> Assignee: Ravi Teja Ch N V
> Labels: BB2015-05-TBR
> Attachments: 0001-MAPREDUCE-2632.patch, MAPREDUCE-2632-1.patch,
> MAPREDUCE-2632.patch
>
>
> 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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