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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4044) Create symbolic links in HDFS
Date Tue, 07 Oct 2008 17:20:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637555#action_12637555
] 

Sanjay Radia commented on HADOOP-4044:
--------------------------------------

Sanjay Saya:
>> Are you saying that getSymlink() can return file:///etc/dir/file.txt?

>Yes.

>Can the name node always know how to compose the two parts. I recall something bizzare
about the composing archive filesystem paths.
>If there is well defined way of composing the two parts then I am fine with the alternative
proposed above.
>If not, the two parts may have to be passed to the file system.

I checked - the above scheme will work with archives. It  uses the standard separator.
+1 on the getSymlink returning the composed pathname.


> 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, symLink5.patch,
symLink6.patch, symLink8.patch, symLink9.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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