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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2249) Better to check the reflexive property of the object while overriding equals method of it
Date Fri, 08 Jul 2011 00:28:16 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061696#comment-13061696
] 

Hudson commented on MAPREDUCE-2249:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #735 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/735/])
    MAPREDUCE-2249. Check the reflexive property of Counters objects when comparing equality.
Contributed by Devaraj K.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1144097
Files : 
* /hadoop/common/trunk/mapreduce/CHANGES.txt
* /hadoop/common/trunk/mapreduce/src/java/org/apache/hadoop/mapred/Counters.java


> Better to check the reflexive property of the object while overriding equals method of
it
> -----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2249
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2249
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.22.0, 0.23.0
>         Environment: NA
>            Reporter: Bhallamudi Venkata Siva Kamesh
>            Assignee: Devaraj K
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2249-1.patch, MAPREDUCE-2249-2.patch, MAPREDUCE-2249.patch
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> It is better to check the reflexive property of the object while overriding equals method
of it.
>  
> It improves the performance when a heavy object is compared to itself.

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