[jira] Assigned: (HADOOP-1981) Need to document the controls for sorting and grouping into the reduce

["Arun C Murthy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-1981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy reassigned HADOOP-1981:
-------------------------------------

    Assignee: Arun C Murthy  (was: Owen O'Malley)

> 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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