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https://issues.apache.org/jira/browse/MAPREDUCE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mariappan Asokan updated MAPREDUCE-2454:
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Attachment: mapreduce-2454.patch
Made some minor change to create single instances of DefaultMapSortPlugin and
DefaultReduceSortPlugin.
> Allow external sorter plugin for MR
> -----------------------------------
>
> Key: MAPREDUCE-2454
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2454
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Affects Versions: 2.0.0-alpha, 3.0.0, 2.2.0-alpha
> Reporter: Mariappan Asokan
> Assignee: Mariappan Asokan
> Priority: Minor
> Labels: features, performance, plugin, sort
> Attachments: HadoopSortPlugin.pdf, HadoopSortPlugin.pdf,
> KeyValueIterator.java, MapOutputSorterAbstract.java, MapOutputSorter.java,
> mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch,
> mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch,
> mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch,
> mapreduce-2454.patch, mr-2454-on-mr-279-build82.patch.gz,
> MR-2454-trunkPatchPreview.gz, ReduceInputSorter.java
>
>
> Define interfaces and some abstract classes in the Hadoop framework to
> facilitate external sorter plugins both on the Map and Reduce sides.
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