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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4019) FSShell should support creating symlinks
Date Tue, 23 Jul 2013 23:52:48 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-4019:
---------------------------------------

    Attachment: HDFS-4019.001.patch

* Add {{ln}} command to {{FSShell}}.

* {{FileContext#globStatus}} and {{FileSystem#globStatus}} should use {{getFileLinkStatus}}
rather than {{getFileStatus}}.  Otherwise information about the paths are lost.

* The {{ls}} command should display something like this for symlinks:
{code}
lrwxrwxrwx   - cmccabe supergroup          0 2013-07-23 15:59 /alpha -> hdfs://localhost:6000/beta
{code}

* {{ClientNamenodeProtocolServerSideTranslatorPB}}: fix {{System.out.println}} that was left
in the code.  It was preventing a unit test that looked at stdout from working.

* TestDFSShell: add unit tests for symlinks and ls of a symlink.
                
> FSShell should support creating symlinks
> ----------------------------------------
>
>                 Key: HDFS-4019
>                 URL: https://issues.apache.org/jira/browse/HDFS-4019
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: tools
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-4019.001.patch
>
>
> FSShell should support creating symlinks.  This would allow users to create symlinks
from the shell without having to write a Java program.
> One thing that makes this complicated is that FSShell currently uses FileSystem internally,
and symlinks are currently only supported by the FileContext API.  So either FSShell would
have to be ported to FileContext, or symlinks would have to be added to FileSystem.  Or perhaps
we could open a FileContext only when symlinks were necessary, but that seems messy.

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