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https://issues.apache.org/jira/browse/HADOOP-5528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683921#action_12683921
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Klaas Bosteels commented on HADOOP-5528:
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Well, I basically created this issue because I wanted the hashing to ignore the
last _n_ bytes from variable length keys, so specifying the offset and length
wouldn't really work for me. Maybe we could support both and only take into
account the length when both a right offset and a length are specified?
> Binary partitioner
> ------------------
>
> Key: HADOOP-5528
> URL: https://issues.apache.org/jira/browse/HADOOP-5528
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Klaas Bosteels
> Assignee: Klaas Bosteels
> Attachments: HADOOP-5528.patch
>
>
> It would be useful to have a {{BinaryPartitioner}} that partitions
> {{BinaryComparable}} keys by hashing a configurable part of the bytes array
> corresponding to each key.
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