[ 
https://issues.apache.org/jira/browse/HDFS-1475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047752#comment-13047752
 ] 

Allen Wittenauer commented on HDFS-1475:
----------------------------------------

I suspect this is a) an incompatible change and b) will therefore require a 
release note.

> Want a -d flag in hadoop dfs -ls : Do not expand directories
> ------------------------------------------------------------
>
>                 Key: HDFS-1475
>                 URL: https://issues.apache.org/jira/browse/HDFS-1475
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.23.0
>         Environment: any
>            Reporter: Greg Connor
>            Assignee: Daryn Sharp
>            Priority: Minor
>         Attachments: HDFS-1475.patch
>
>
> I would really love it if dfs -ls had a -d flag, like unix ls -d, which would 
> list the directories matching the name or pattern but *not* their contents.
> Current behavior is to expand every matching dir and list its contents, which 
> is awkward if I just want to see the matching dirs themselves (and their 
> permissions).  Worse, if a directory exists but is empty, -ls simply returns 
> no output at all, which is unhelpful.  
> So far we have used some ugly workarounds to this in various scripts, such as
>   -ls /path/to |grep dir   # wasteful, and problematic if "dir" is a 
> substring of the path
>   -stat /path/to/dir "Exists"  # stat has no way to get back the full path, 
> sadly
>   -count /path/to/dir  # works but is probably overkill.
> Really there is no reliable replacement for ls -d -- the above hacks will 
> work but only for certain isolated contexts.  (I'm not a java programmer, or 
> else I would probably submit a patch for this, or make my own jar file to do 
> this since I need it a lot.)

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

Reply via email to