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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-5294) Shuffle#MergeManager should support org.apache.hadoop.mapreduce.Reducer
Date Mon, 03 Jun 2013 09:04:20 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tsuyoshi OZAWA resolved MAPREDUCE-5294.

    Resolution: Duplicate

Moved to MAPREDUCE-5294, subtask of MAPREDUCE-5221.
> Shuffle#MergeManager should support org.apache.hadoop.mapreduce.Reducer
> -----------------------------------------------------------------------
>                 Key: MAPREDUCE-5294
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5294
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>    Affects Versions: trunk, 2.1.0-beta, 2.0.5-alpha
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
> 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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