[ https://issues.apache.org/jira/browse/MAPREDUCE-1126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley updated MAPREDUCE-1126:
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Attachment: m-1126-2.patch
Here is the 1.5k subset of Tom's patch that addresses the issue of this jira. I propose we
commit some variant of it and move the discussion of generalizing serialization over to a
new jira MAPREDUCE-1462.
> 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
> Fix For: 0.22.0
>
> Attachments: m-1126-2.patch, 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
>
>
> 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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