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https://issues.apache.org/jira/browse/MAPREDUCE-4839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536599#comment-13536599
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Luke Lu commented on MAPREDUCE-4839:
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I mean you can assert the real value of partition is this case. If
numReduceTasks is large enough, the likelihood the value is the same for the
tested hashes are small, which IMO is good enough of a test.
> TextPartioner for hashing Text with good hashing function to get better
> distribution
> ------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4839
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4839
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Radim Kolar
> Attachments: textpartitioner1.txt, textpartitioner2.txt,
> textpartitioner3.txt, textpartitioner4.txt, textpartitioner6.txt,
> textpartitioner7.txt
>
>
> partitioner for Text keys using util.Hash framework for hashing function
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