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https://issues.apache.org/jira/browse/MAPREDUCE-318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13545328#comment-13545328
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Leitao Guo commented on MAPREDUCE-318:
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does the patch include the description of MAPREDUCE-268?
> Refactor reduce shuffle code
> ----------------------------
>
> Key: MAPREDUCE-318
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-318
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: performance, task
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.21.0
>
> Attachments: HADOOP-5233_api.patch, HADOOP-5233_part0.patch,
> mapred-318-14Aug.patch, mapred-318-20Aug.patch, mapred-318-24Aug.patch,
> mapred-318-3Sep.patch, mapred-318-3Sep-v1.patch, mapred-318-common.patch
>
>
> The reduce shuffle code has become very complex and entangled. I think we
> should move it out of ReduceTask and into a separate package
> (org.apache.hadoop.mapred.task.reduce). Details to follow.
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