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