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https://issues.apache.org/jira/browse/MAPREDUCE-5063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612391#comment-13612391
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Harsh J commented on MAPREDUCE-5063:
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This is easily possible in user code with a custom key structure and a custom
partitioner. There are no gotchas in implementing this for a specific need.
I don't see why we should add a dedicated API for this. If you agree, lets
close this out as invalid as this qualifies as a simple user question and
belongs to the mailing lists.
> Transfering mapper output (key,value) pair to multiple reducer
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-5063
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5063
> Project: Hadoop Map/Reduce
> Issue Type: Wish
> Affects Versions: 1.0.3
> Reporter: Vikas Jadhav
> Priority: Minor
>
> Currently in Hadoop MapReduce mapper output in (key,value) form can be
> transfered to only one reducer
> Our goal is to be able transfer/shuffle (key,value) pair to multiple reducer
> Note:- we need to shuffle same pair to number of reducers
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