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Posted to mapreduce-dev@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2014/07/29 20:56:42 UTC

[jira] [Resolved] (MAPREDUCE-1126) shuffle should use serialization to get comparator

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved MAPREDUCE-1126.
-----------------------------------------

    Resolution: Won't Fix

> shuffle should use serialization to get comparator
> --------------------------------------------------
>
>                 Key: MAPREDUCE-1126
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1126
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task
>            Reporter: Doug Cutting
>            Assignee: Aaron Kimball
>         Attachments: MAPREDUCE-1126.2.patch, MAPREDUCE-1126.3.patch, MAPREDUCE-1126.4.patch, MAPREDUCE-1126.5.patch, MAPREDUCE-1126.6.patch, MAPREDUCE-1126.patch, MAPREDUCE-1126.patch, m-1126-2.patch, m-1126-3.patch
>
>
> Currently the key comparator is defined as a Java class.  Instead we should use the Serialization API to create key comparators.  This would permit, e.g., Avro-based comparators to be used, permitting efficient sorting of complex data types without having to write a RawComparator in Java.



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