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https://issues.apache.org/jira/browse/HADOOP-1981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12536967
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Arun C Murthy commented on HADOOP-1981:
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bq. Both methods desperately need better names.
+1
I completely agree, unless anyone objects I'll roll this into HADOOP-2046 since
the changed names better reflect what they are meant to do.
Oh, btw I'd go for {{setKeyGroupingComparator}} and
{{setKeyEquivalenceComparator}}... *smile*
> Need to document the controls for sorting and grouping into the reduce
> ----------------------------------------------------------------------
>
> Key: HADOOP-1981
> URL: https://issues.apache.org/jira/browse/HADOOP-1981
> Project: Hadoop
> Issue Type: Task
> Components: mapred
> Reporter: Owen O'Malley
> Assignee: Arun C Murthy
>
> The JavaDoc for the Reducer should document how to control the sort order of
> keys and values via the JobConf methods:
> {code}
> setOutputKeyComparatorClass
> setOutputValueGroupingComparator
> {code}
> Both methods desperately need better names. (I'd vote for
> setKeySortingComparator and setKeyGroupingComparator.)
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