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https://issues.apache.org/jira/browse/MAPREDUCE-1320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793843#action_12793843
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Kay Kay commented on MAPREDUCE-1320:
------------------------------------

On first pass - the test failures does not seem to be related to the patch but 
due to environmental issues , may be. 

Need to revisit this after we get a complete green build once on the trunk. 

> StringBuffer -> StringBuilder occurence 
> ----------------------------------------
>
>                 Key: MAPREDUCE-1320
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1320
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.20.1
>            Reporter: Kay Kay
>             Fix For: 0.20.2
>
>         Attachments: MAPREDUCE-1320.patch
>
>
> A good number of toString() implementations use StringBuffer when the 
> reference clearly does not go out of scope of the method and no concurrency 
> is needed. Patch contains replacing those occurences from StringBuffer to 
> StringBuilder. 
> Created against map/reduce project trunk . 

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