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Posted to commits@cassandra.apache.org by "Benedict (JIRA)" <ji...@apache.org> on 2014/09/18 22:02:34 UTC

[jira] [Updated] (CASSANDRA-7096) Evaluate murmur hash of token only once

     [ https://issues.apache.org/jira/browse/CASSANDRA-7096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benedict updated CASSANDRA-7096:
--------------------------------
    Assignee: Branimir Lambov  (was: T Jake Luciani)

> Evaluate murmur hash of token only once
> ---------------------------------------
>
>                 Key: CASSANDRA-7096
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7096
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Benedict
>            Assignee: Branimir Lambov
>            Priority: Minor
>              Labels: performance
>             Fix For: 3.0
>
>
> Every bloom filter lookup we perform recalculates the murmur hash for the token. I propose we extend DecoratedKey for the purposes of reads only, and attach the full murmur hash to it so that we can pass these directly to the bloom filter.



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