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https://issues.apache.org/jira/browse/HADOOP-10793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055127#comment-14055127
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Mike Yoder commented on HADOOP-10793:
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Hi [~lmccay] - to be clear, I like the double dash style, too - but I have to
agree with others that being consistent with other existing tools trumps that.
The single dash might be slightly archaic, but it's better than different
argument schemes for different tools. This ecosystem is complicated enough
without that. :-)
I would imagine that the change would be to simply lop off one dash. As for
the arg parsing, it's not _bad_ as is, but if there is a package that was built
to handle command line args we should at least have a look at it.
> Key Shell args use double dash style
> ------------------------------------
>
> Key: HADOOP-10793
> URL: https://issues.apache.org/jira/browse/HADOOP-10793
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 3.0.0
> Reporter: Mike Yoder
>
> Follow-on from HADOOP-10736 as per [~andrew.wang] - the key shell uses the
> gnu double dash style for command line args, while other command line
> programs use a single dash. Consider changing this, and consider another
> argument parsing scheme, like the CommandLine class.
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