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Posted to mapreduce-dev@hadoop.apache.org by "Tsuyoshi OZAWA (JIRA)" <ji...@apache.org> on 2013/06/03 11:06:20 UTC

[jira] [Resolved] (MAPREDUCE-5293) Shuffle#MergeManager should support org.apache.hadoop.mapreduce.Reducer

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsuyoshi OZAWA resolved MAPREDUCE-5293.
---------------------------------------

    Resolution: Duplicate

Moved to MAPREDUCE-5294, subtask of MAPREDUCE-5221.
                
> Shuffle#MergeManager should support org.apache.hadoop.mapreduce.Reducer
> -----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5293
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5293
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: trunk
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>            Priority: Blocker
>
> Shuffle#MergeManager only accepts org.apache.hadoop.mapred.Reducer currently. Because of this, Reduce-side Combiner is not used when using the new API, and just ignored. By supporting it and using the feature from ReduceTask, Reduce-side combiner can be enabled with new API. Please see MAPREDUCE-5221 for more detail.

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