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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6755) Optimise CellName/Composite comparisons for NativeCell
Date Fri, 20 Jun 2014 16:20:25 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14038973#comment-14038973
] 

Sylvain Lebresne commented on CASSANDRA-6755:
---------------------------------------------

bq. This is a compile time only dependency. It's not in the /lib dir so I don't think we need
todo this

You're probably right though tbh I'm not 100% sure that's true. How confident are you about
that?

> Optimise CellName/Composite comparisons for NativeCell
> ------------------------------------------------------
>
>                 Key: CASSANDRA-6755
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6755
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Benedict
>            Assignee: T Jake Luciani
>            Priority: Minor
>              Labels: performance
>             Fix For: 2.1 rc2
>
>         Attachments: 6755.txt, 6755v2.txt
>
>
> As discussed in CASSANDRA-6694, to reduce temporary garbage generation we should minimise
the incidence of CellName component extraction. The biggest win will be to perform comparisons
on Cell where possible, instead of CellName, so that Native*Cell can use its extra information
to avoid creating any ByteBuffer objects



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