[
https://issues.apache.org/jira/browse/HADOOP-8694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chuan Liu updated HADOOP-8694:
------------------------------
Attachment: HADOOP-8694-branch-1-win.patch
Attach a patch that will create symbolic links on Windows instead of copying
files. Users need to add symbolic privilege to the account running Hadoop. If
the user is in Administrators group, Hadoop need to be run in elevated mode.
> Create true symbolic links on Windows
> -------------------------------------
>
> Key: HADOOP-8694
> URL: https://issues.apache.org/jira/browse/HADOOP-8694
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 1-win
> Reporter: Chuan Liu
> Assignee: Chuan Liu
> Fix For: 1-win
>
> Attachments: HADOOP-8694-branch-1-win.patch
>
>
> In branch-1-win, we currently copy files for symbolic links in Hadoop on
> Windows. We have talked to [~davidlao] who made the original fix, and did
> some investigation on Windows. Windows began to support symbolic links
> (symlinks) since Vista/Server 2008. The original reason to copy files instead
> of creating actual symlinks is that only Administrators has the privilege to
> create symlinks on Windows _by default_. After talking to NTFS folks, we knew
> the reason for that is mostly due to security, and this default behavior may
> not be changed in near future. Though this behavior can be changed via the
> Local Security Policy management console, i.e. secpol.msc, under Security
> Settings\Local Policies\User Rights Assignment\Create symbolic links.
>
> In Hadoop, symlinks is mostly used to for DistributedCache and attempted
> logs. We felt the usages are important enough for us to provide true symlinks
> support, and users need to have the symlink creation privilege enabled on
> Windows to use Hadoop.
> This JIRA is created to tracking symlink support on Windows.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
