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From "Klaas Bosteels (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5528) Binary partitioner
Date Fri, 20 Mar 2009 16:20:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683921#action_12683921
] 

Klaas Bosteels commented on HADOOP-5528:
----------------------------------------

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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