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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9817) FileSystem#globStatus and FileContext#globStatus need to work with symlinks
Date Thu, 01 Aug 2013 23:31:48 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727075#comment-13727075
] 

Colin Patrick McCabe commented on HADOOP-9817:
----------------------------------------------

Thanks for checking this out, Kousuke.  Those problems you listed are both essentially HDFS-5021
(FSShell doesn't support symlinks).  I would like to get this JIRA in soon so that HDFS-5021
can be fixed.

I will post a "combined" patch on HDFS-5021 in a minute or two so you can try out some FSShell
operations.
                
> FileSystem#globStatus and FileContext#globStatus need to work with symlinks
> ---------------------------------------------------------------------------
>
>                 Key: HADOOP-9817
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9817
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.3.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HADOOP-9817.004.patch
>
>
> FileSystem#globStatus and FileContext#globStatus need to work with symlinks.  Currently,
they resolve all links, so that if you have:
> {code}
> /alpha/beta
> /alphaLink -> alpha
> {code}
> and you take {{globStatus(/alphaLink/*)}}, you will get {{/alpha/beta}}, rather than
the expected {{/alphaLink/beta}}.
> We even resolve terminal symlinks, which would prevent listing a symlink in FSShell,
for example.  Instead, we should build up the path incrementally.  This will allow the shell
to behave as expected, and also allow custom globbers to "see" the correct paths for symlinks.

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