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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Assigned] (CASSANDRA-3772) Evaluate Murmur3-based partitioner
Date Wed, 04 Jul 2012 19:56:34 GMT


Jonathan Ellis reassigned CASSANDRA-3772:

    Assignee: Pavel Yaskevich  (was: Dave Brosius)

Pavel, can you see if you can reproduce md5 bottlenecks in 2I reads, and see if this partitioner
makes a meaningful difference?
> Evaluate Murmur3-based partitioner
> ----------------------------------
>                 Key: CASSANDRA-3772
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Pavel Yaskevich
>             Fix For: 1.2
>         Attachments: 0001-CASSANDRA-3772-Test.patch, MumPartitionerTest.docx, hashed_partitioner.diff,
hashed_partitioner_3.diff, try_murmur3.diff, try_murmur3_2.diff
> MD5 is a relatively heavyweight hash to use when we don't need cryptographic qualities,
just a good output distribution.  Let's see how much overhead we can save by using Murmur3

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