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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-581) RandomPartitioner convertFromDiskFormat is slow
Date Sat, 05 Dec 2009 12:35:21 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12786392#action_12786392
] 

Hudson commented on CASSANDRA-581:
----------------------------------

Integrated in Cassandra #278 (See [http://hudson.zones.apache.org/hudson/job/Cassandra/278/])
    Change convertFromDiskFormat to use substring splitting vs using split operation (slow).
patch by goffinet; reviewed by stuhood for 


> RandomPartitioner convertFromDiskFormat is slow
> -----------------------------------------------
>
>                 Key: CASSANDRA-581
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-581
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.5
>            Reporter: Chris Goffinet
>            Assignee: Chris Goffinet
>            Priority: Minor
>             Fix For: 0.5
>
>         Attachments: 0001-Make-convertFromDiskFormat-use-substring-over-split-.patch
>
>
> convertFromDiskFormat in RandomPartitioner is slow. It uses split. We were testing with
1000+ keys using multi-get on a local node. We saw on average 200ms~, with the applied patch
it went down to 76ms~.

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