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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-420) Improve performance of BinaryMemtable sort phase
Date Wed, 16 Sep 2009 12:53:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756009#action_12756009
] 

Hudson commented on CASSANDRA-420:
----------------------------------

Integrated in Cassandra #199 (See [http://hudson.zones.apache.org/hudson/job/Cassandra/199/])
    Use DecoratedKey objects in BMt to avoid lots of expensive String parsing operations when
sorting. patch by johano; reviewed by jbellis for 


> Improve performance of BinaryMemtable sort phase
> ------------------------------------------------
>
>                 Key: CASSANDRA-420
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-420
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 0.5
>            Reporter: Johan Oskarsson
>            Assignee: Johan Oskarsson
>            Priority: Minor
>             Fix For: 0.5
>
>         Attachments: CASSANDRA-420.patch, CASSANDRA-420.patch
>
>
> The BinaryMemtable sorts an array of decorated keys. There are a lot of string operations
and object allocation in the comparator that could be avoided to improve performance..

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