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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4044) Create symbolic links in HDFS
Date Tue, 16 Sep 2008 00:41:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12631218#action_12631218
] 

Robert Chansler commented on HADOOP-4044:
-----------------------------------------

-1
Sometimes just doing the easy part is not good enough. In this case, the reasonable expectation
of users is that if HDFS has links, you can 1) link to anything, and 2) links can be path
components. (Those two issues aren't well-separated in the previous discussion.) It's not
reasonable to have to keep explaining that links only sort of work to each user. And even
the easy case is not completely thought out: Is it an _error_ to make a link to a directory,
or is that something that _just won't work_ when using the link? What about modifications
to the shell commands to support links?

> 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
>
>
> 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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