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https://issues.apache.org/jira/browse/HADOOP-6657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849174#action_12849174
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Steve Loughran commented on HADOOP-6657:
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If you are going to do toUpper/toLower then you need to handle odd locales
where the conversion logic doesn't match EN_US. Easiest way: Specify the locale
in the conversion operation. Otherwise you end up fielding bugreps from places
like turkey that you can't replicate locally.
Add a test for the entire ascii alphabet convertiing just to make sure all is
well.
> Common portion of MAPREDUCE-1545
> --------------------------------
>
> Key: HADOOP-6657
> URL: https://issues.apache.org/jira/browse/HADOOP-6657
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Luke Lu
> Assignee: Luke Lu
> Fix For: 0.22.0
>
> Attachments: hadoop-6657-trunk-v1.patch
>
>
> Common portion of the MAPREDUCE-1545.
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