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https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12639609#action_12639609
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Allen Wittenauer commented on HADOOP-4044:
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>(I guess unix thinks the : is simply part of the name.)
Pretty much. ln doesn't validate the link at all, so you can put all sorts of
interesting things there. It is up to the calling program or filesystem to
verify the validity in its context. [For example, I think it is rsh that if
you link a hostname to rsh, it will then rsh to that host.]
It should also be noted that : is a valid directory separator under HFS+ (Mac
OS X) as well. You're likely to see very bizarro results on those operating
systems that use : as a metachar as a result.
> 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: HADOOP-4044-strawman.patch, 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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