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https://issues.apache.org/jira/browse/HADOOP-12857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15199458#comment-15199458
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Allen Wittenauer commented on HADOOP-12857:
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bq. I wish there was a way to dynamically add subcommands to hadoop, mapred,
etc, but the code just isn't quite there yet. We can do usage now, but not
actually execution.
I know how to do this now in a very clean way that would even allow 3rd parties
to add subcommands to the shell commands. It is definitely complimentary to
this patch, but I'll wait for this one to get committed before taking that on
since it's a much bigger patch.
> Rework hadoop-tools
> -------------------
>
> Key: HADOOP-12857
> URL: https://issues.apache.org/jira/browse/HADOOP-12857
> Project: Hadoop Common
> Issue Type: Improvement
> Components: build
> Affects Versions: 3.0.0
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Attachments: HADOOP-12857.00.patch, HADOOP-12857.01.patch,
> HADOOP-12857.02.patch
>
>
> As hadoop-tools grows bigger and bigger, it's becoming evident that having a
> single directory that gets sucked in is starting to become a big burden as
> the number of tools grows. Let's rework this to be smarter.
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