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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HADOOP-4044) Create symbolic links in HDFS
Date Fri, 19 Sep 2008 17:10:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632744#action_12632744
] 

aw edited comment on HADOOP-4044 at 9/19/08 10:09 AM:
--------------------------------------------------------------------

chmod -H (under BSD, at least):

     -H    If the -R option is specified, symbolic links on the command line
             are followed.  (Symbolic links encountered in the tree traversal
             are not followed by default.)

This likely only makes sense if the symlink is pointing to the local file system or another
HDFS, though.

BSD also supports -L which might be useful as well:

     -L      If the -R option is specified, all symbolic links are followed.


      was (Author: aw):
    chmod -H (under BSD, at least):

     -H    If the -R option is specified, symbolic links on the command line
             are followed.  (Symbolic links encountered in the tree traversal
             are not followed by default.)

This likely only makes sense if the symlink is pointing to the local file system or another
HDFS, though.

  
> Create symbolic links in HDFS
> -----------------------------
>
>                 Key: HADOOP-4044
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4044
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: symLink1.patch, symLink1.patch, symLink4.patch
>
>
> HDFS should support symbolic links. A symbolic link is a special type of file that contains
a reference to another file or directory in the form of an absolute or relative path and that
affects pathname resolution. Programs which read or write to files named by a symbolic link
will behave as if operating directly on the target file. However, archiving utilities can
handle symbolic links specially and manipulate them directly.

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