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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9044) add FindClass main class to provide classpath checking of installations
Date Fri, 14 Mar 2014 09:48:43 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13934822#comment-13934822
] 

Steve Loughran commented on HADOOP-9044:
----------------------------------------

looks good (though I'm not in a position to +1 it). Maybe we should add something to the hadoop
docs and get someone else to approve it. This is a low risk patch after all

> add FindClass main class to provide classpath checking of installations
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-9044
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9044
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: util
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: HADOOP-9044-002.patch, HADOOP-9044-003.patch, HADOOP-9044.patch,
HADOOP-9044.patch
>
>
> It's useful in postflight checking of a hadoop installation to verify that classes load,
especially codes with external JARs and native codecs. 
> An entry point designed to load a named class and create an instance of that class can
do this -and be invoked from any shell script or tool that does the installation.



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