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https://issues.apache.org/jira/browse/HADOOP-2456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553752
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Matthias Friedrich commented on HADOOP-2456:
--------------------------------------------
Unfortunately, NumberFormat doesn't have the applyPattern() method. So I'm
afraid, we can't get rid of the cast.
> German locale makes NameNode web interface crash
> ------------------------------------------------
>
> Key: HADOOP-2456
> URL: https://issues.apache.org/jira/browse/HADOOP-2456
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.15.2
> Environment: Ubuntu Linux 7.10
> Reporter: Matthias Friedrich
> Priority: Minor
> Fix For: 0.15.2
>
> Attachments: namenode-log.txt, number-format-fix.patch
>
>
> When starting the NameNode with a German locale (or some other that uses ","
> as the decimal separator), the web interface (dfshealth.jsp) crashes with a
> NumberFormatException.
> To reproduce:
> $ LC_ALL=de_DE bin/start-dfs.sh
> Then copy some data to the store so that the percentage of used space is
> above 0%. Load the web interface in your browser and you'll get a HTTP 500
> error message.
> The problem is that FsShell gives you a localized number (eg. "0,7") which
> can't be parsed by Double.parseDouble().
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