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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4012) Further optimize byte comparison methods
Date Wed, 29 Jun 2011 01:26:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13056937#comment-13056937
] 

Hudson commented on HBASE-4012:
-------------------------------

Integrated in HBase-TRUNK #1996 (See [https://builds.apache.org/job/HBase-TRUNK/1996/])
    HBASE-4012 Further optimize byte comparison methods (Ted Yu)

tedyu : 
Files : 
* /hbase/trunk/CHANGES.txt
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/util/Bytes.java


> Further optimize byte comparison methods
> ----------------------------------------
>
>                 Key: HBASE-4012
>                 URL: https://issues.apache.org/jira/browse/HBASE-4012
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>    Affects Versions: 0.92.0
>            Reporter: Todd Lipcon
>            Assignee: Ted Yu
>            Priority: Minor
>              Labels: noob
>             Fix For: 0.92.0
>
>         Attachments: 4012-v2.txt, 4012.txt
>
>
> Guava uses some clever tricks with sun.misc.Unsafe to compare byte arrays about 100%
faster than the naive byte-by-byte implementation: http://guava-libraries.googlecode.com/svn/trunk/guava/src/com/google/common/primitives/UnsignedBytes.java
> We should borrow this [Apache 2 licensed] code.

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