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https://issues.apache.org/jira/browse/CASSANDRA-3772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439630#comment-13439630
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Jonathan Ellis commented on CASSANDRA-3772:
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Have a look at BigInteger source, it's about 3x as large as a Long. compareTo
is also more complex.
> Evaluate Murmur3-based partitioner
> ----------------------------------
>
> Key: CASSANDRA-3772
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3772
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Pavel Yaskevich
> Fix For: 1.2.0
>
> Attachments: 0001-CASSANDRA-3772.patch,
> 0001-CASSANDRA-3772-Test.patch, CASSANDRA-3772-v2.patch,
> CASSANDRA-3772-v3.patch, hashed_partitioner_3.diff, hashed_partitioner.diff,
> MumPartitionerTest.docx, try_murmur3_2.diff, try_murmur3.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 instead.
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