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https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630470#action_12630470
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Raghu Angadi commented on HADOOP-4044:
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Also this is useful and and important enough feature to deserve an exception
for 0.19.x release if 0.20.0 is too late or has too much other stuff.
> In my mind, cross-filesystem "symlinks" really don't seem like "real"
> symlinks to me, but a sort of hacked version of autofs support.
If we think of Hadoop FileSystem as VFS, and HDFS, S3, LocalFS etc as various
filesystems, then cross FS symlinks look more like real symlinks (like link in
ext3 linking to a directory in NTFS). Yes, they are still not very real since a
symlink in LocalFS can not point to "hdfs://users" (actually it is possible to
handle those to certain extent).
> 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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