[jira] [Created] (HADOOP-8176) Disambiguate the destination of FsShell copies

["Daryn Sharp (Created) (JIRA)" <ji...@apache.org>]

Disambiguate the destination of FsShell copies
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                 Key: HADOOP-8176
                 URL: https://issues.apache.org/jira/browse/HADOOP-8176
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
    Affects Versions: 0.24.0, 0.23.2
            Reporter: Daryn Sharp
            Assignee: Daryn Sharp


The copy commands currently do not provide a way to disambiguate the expected destination of a copy.  Ex.
{{fs -put myfile path/mydir}}

If "mydir" is an existing directory, then the copy produces {{path/mydir/file}}.  If "mydir" does not exist at all, the copy produces {{path/mydir}}.  The file has unexpectedly been renamed to what was expected to be a directory!  It's standard unix shell behavior, but it lacks a special trait.

Unix allows a user to disambiguate their intent by allowing {{path/mydir/}} or {{path/mydir/.}} to mean "mydir" is *always* be treated as a directory.  If the copy succeeds, it will always be called {{path/mydir/myfile}}.

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