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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9088) Add Murmur3 hash
Date Tue, 27 Nov 2012 19:35:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504865#comment-13504865
] 

Radim Kolar commented on HADOOP-9088:
-------------------------------------

to improve hashing. WritableComparator hash is weak (used by binarypartitioner), HashPartitioner
sucks even more (using object.hashcode), i will add TextPartitioner using murmur3, it have
good distribution of results.
                
> Add Murmur3 hash
> ----------------
>
>                 Key: HADOOP-9088
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9088
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Radim Kolar
>            Assignee: Radim Kolar
>         Attachments: murmur3-2.txt, murmur3-3.txt, murmur3.txt
>
>
> faster and better then murmur2

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