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https://issues.apache.org/jira/browse/HADOOP-6323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12788376#action_12788376
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Tom White commented on HADOOP-6323:
-----------------------------------
bq. WritableSerialization now checks that the serialization class matches the
objects it is given.
The extra check is called for every key and value that goes through the
shuffle. We should be sure that this doesn't add any overhead by running a
benchmark.
> Serialization should provide comparators
> ----------------------------------------
>
> Key: HADOOP-6323
> URL: https://issues.apache.org/jira/browse/HADOOP-6323
> Project: Hadoop Common
> Issue Type: New Feature
> Components: io
> Reporter: Doug Cutting
> Assignee: Aaron Kimball
> Attachments: HADOOP-6323.2.patch, HADOOP-6323.3.patch,
> HADOOP-6323.4.patch, HADOOP-6323.5.patch, HADOOP-6323.patch
>
>
> The Serialization interface should permit one to create raw comparators.
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