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: 0.20.1
Environment: any
Reporter: Greg Connor
Priority: Minor
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.
-
You can reply to this email to add a comment to the issue online.
