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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-5021) FileSystem#delete and FileSystem#rename should operate on symlinks, not their targets
Date Fri, 02 Aug 2013 18:33:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe resolved HDFS-5021.
----------------------------------------

    Resolution: Fixed

This was actually being caused by HADOOP-9817.  That bug led to the FSShell resolving all
symlinks, which in turn meant that {{hadoop fs -rm}} would remove the target file, not the
symlink itself.
                
> FileSystem#delete and FileSystem#rename should operate on symlinks, not their targets
> -------------------------------------------------------------------------------------
>
>                 Key: HDFS-5021
>                 URL: https://issues.apache.org/jira/browse/HDFS-5021
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Colin Patrick McCabe
>             Fix For: 2.1.0-beta
>
>
> Currently {{FileSystem#delete}} and {{FileSystem#rename}} don't behave as expected on
symlinks.  If you have {{/a/b/c}} as a link to {{/a/b/d}}, and you try to delete {{/a/b/c}},
the target {{/a/b/d}} will be deleted instead.  Not only is this contrary to POSIX (and pretty
much every other filesystem standard) but this gives us no way to actually delete symlinks
other than deleting the containing directory.
> Let's fix this so deleting a symlink deletes the symlink itself.  It will just require
not dereferencing the last path component.  I haven't looked as closely into rename but I
think there are similar issues there

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