Hi,

hadoop fs -ls dirname

lists entries like

dirname/file1
dirname/file2

i.e. dirname is repeated. And it takes a small second to realize that
there's actually no directory called dirname under dirname.

Native ls doesn't repeat dirname when listing the output.

I suppose the current behaviour is to handle globbing. So,

hadoop fs -ls dirname*

will list

dirname1/file1
dirname2/file1

which makes a little more sense. In contrast, native ls will list the same as

dirname1:
file1

dirname2:
file1

Is there a rationale to keep this as the listing behaviour in Hadoop ?

I think most of the rational is for backwards compatibility, but I could
be wrong.  If you want to change it file a JIRA about it and we can
discuss on the JIRA the merits of the change.

--Bobby

On 9/11/12 6:28 AM, "Hemanth Yamijala" <[EMAIL PROTECTED]> wrote:

>Hi,
>
>hadoop fs -ls dirname
>
>lists entries like
>
>dirname/file1
>dirname/file2
>
>i.e. dirname is repeated. And it takes a small second to realize that
>there's actually no directory called dirname under dirname.
>
>Native ls doesn't repeat dirname when listing the output.
>
>I suppose the current behaviour is to handle globbing. So,
>
>hadoop fs -ls dirname*
>
>will list
>
>dirname1/file1
>dirname2/file1
>
>which makes a little more sense. In contrast, native ls will list the
>same as
>
>dirname1:
>file1
>
>dirname2:
>file1
>
>Is there a rationale to keep this as the listing behaviour in Hadoop ?

Sure. Have filed https://issues.apache.org/jira/browse/HADOOP-8788 ..
Would be interested in what comes out in the discussion.

Thanks
hemanth

On Tue, Sep 11, 2012 at 7:10 PM, Robert Evans <[EMAIL PROTECTED]> wrote:
> I think most of the rational is for backwards compatibility, but I could
> be wrong.  If you want to change it file a JIRA about it and we can
> discuss on the JIRA the merits of the change.
>
> --Bobby
>
> On 9/11/12 6:28 AM, "Hemanth Yamijala" <[EMAIL PROTECTED]> wrote:
>
>>Hi,
>>
>>hadoop fs -ls dirname
>>
>>lists entries like
>>
>>dirname/file1
>>dirname/file2
>>
>>i.e. dirname is repeated. And it takes a small second to realize that
>>there's actually no directory called dirname under dirname.
>>
>>Native ls doesn't repeat dirname when listing the output.
>>
>>I suppose the current behaviour is to handle globbing. So,
>>
>>hadoop fs -ls dirname*
>>
>>will list
>>
>>dirname1/file1
>>dirname2/file1
>>
>>which makes a little more sense. In contrast, native ls will list the
>>same as
>>
>>dirname1:
>>file1
>>
>>dirname2:
>>file1
>>
>>Is there a rationale to keep this as the listing behaviour in Hadoop ?
>