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http://issues.apache.org/jira/browse/HADOOP-525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12461831
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Milind Bhandarkar commented on HADOOP-525:
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Yes, that would be a better test. I will file a separate bug for that, though.
> Need raw comparators for hadoop record types
> --------------------------------------------
>
> Key: HADOOP-525
> URL: http://issues.apache.org/jira/browse/HADOOP-525
> Project: Hadoop
> Issue Type: Improvement
> Components: record
> Affects Versions: 0.6.0
> Reporter: Sameer Paranjpye
> Assigned To: Milind Bhandarkar
> Fix For: 0.10.0
>
> Attachments: raw-comparators.patch, TypeBuilder-support.tar,
> TypeBuilder.java, WordCountType.java
>
>
> Raw comparators are not generated for types that are generated with the
> Hadoop record framework. This could have a substantial performance impact
> when using hadoop record generated types in Map/Reduce. The record i/o
> framework should auto-generate raw comparators for types.
> Comparison for hadoop record i/o types is defined to be member wise
> comparison of objects. A possible implementation could only deserialize one
> member from each object at a time, compare them and either return or move on
> to the next member if the values are equal.
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