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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2689) RegEx support for expressing datanodes in the slaves conf files
Date Fri, 31 Dec 2010 16:14:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976287#action_12976287

Daniel Templeton commented on HADOOP-2689:

This would be something fairly easy to write in a higher level language like Perl or Python,
but that would create an additional dependency on an interpreter.  It's probably possible
to implement just as a bash script, maybe with some embedded gawk, but it will be nasty ugly.

> RegEx support for expressing datanodes in the slaves conf files
> ---------------------------------------------------------------
>                 Key: HADOOP-2689
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2689
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 0.14.4
>         Environment: All
>            Reporter: Venkat Ramachandran
> It will be very handy if datanodes and task trackers can be expressed in the slave conf
file as regular expressions.
> For example, 
> machine[1-200].corp
> machine[400-679].corp

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