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https://issues.apache.org/jira/browse/HDFS-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759312#action_12759312
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Allen Wittenauer commented on HDFS-245:
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bq.(From the lstat(2) man page: "Unlike other filesystem objects, symbolic
links do not have an owner, group, access mode, times, etc. Instead, these
attributes are taken from the directory that contains the link. The only
attributes returned from an lstat() that refer to the symbolic link itself are
the file type (S_IFLNK), size, blocks, and link count (always 1)."
Danger! lstat() implementations differ between the various flavors! IEEE Std
1003.1, 2004
[http://www.opengroup.org/onlinepubs/009695399/functions/lstat.html] says:
{quote}
The lstat() function shall be equivalent to stat(), except when path refers to
a symbolic link. In that case lstat() shall return information about the link,
while stat() shall return information about the file the link references.
{quote}
> Create symbolic links in HDFS
> -----------------------------
>
> Key: HDFS-245
> URL: https://issues.apache.org/jira/browse/HDFS-245
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: 4044_20081030spi.java, designdocv1.txt,
> HADOOP-4044-strawman.patch, symlink-0.20.0.patch, symLink1.patch,
> symLink1.patch, symLink11.patch, symLink12.patch, symLink13.patch,
> symLink14.patch, symLink15.txt, symLink15.txt, symlink16-common.patch,
> symlink16-hdfs.patch, symlink16-mr.patch, symlink17-common.txt,
> symlink17-hdfs.txt, 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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