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https://issues.apache.org/jira/browse/HADOOP-5528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683986#action_12683986
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Klaas Bosteels commented on HADOOP-5528:
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The meaning is different yes. Specifying _left = x_ means that the _x_ leftmost
bytes will not be taken into account and, simlarily, specifying _right = y_
means that the _y_ rightmost bytes will not be taken into account. So the right
offset is not relative to the first byte of the array, but to the last one.
> 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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