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MapReduce, mail # user - sym Links in hadoop


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Re: sym Links in hadoop
Terry Healy 2012-10-08, 15:33
Visioner-

I hope it is not heresy to mention here, but I believe the MapR
implementation of Hadoop supports symlink via NFS.

-Terry

On 10/08/2012 10:20 AM, Visioner Sadak wrote:
> thanks dave its in hdfs only....any other methods of creating a symlink
>
> On Mon, Oct 8, 2012 at 7:00 PM, Dave Beech <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>     Hi,
>     The FileUtil.symlink command does nothing more than call the unix "ln"
>     command, so it has no knowledge of how to work with Hadoop archive
>     files, only plain files and directories.
>     Is your archive on local disk, or in HDFS?
>     Cheers,
>     Dave
>
>     On 8 October 2012 13:43, Visioner Sadak <[EMAIL PROTECTED]
>     <mailto:[EMAIL PROTECTED]>> wrote:
>     > I tried using FileUtil class for creating a symlink within hadoop
>     actually i
>     > want to create a symlink for my har directory so my code looks like
>     >
>     > FileUtil.symLink("/user2/","har:///user/5oct2012.har")
>     >
>     > but getting error like this
>     >
>     > org.apache.hadoop.fs.FileUtil
>     >  - Command 'ln -s /user2/ har://user/5oct2012.har/' failed 1 with: ln:
>     > target `har:///user/5oct2012.har/' is not a directory: No such file or
>     > directory
>     >
>     >
>     >
>     >
>     > On Mon, Oct 8, 2012 at 12:13 PM, Visioner Sadak
>     <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
>     > wrote:
>     >>
>     >> Hello,
>     >>
>     >>           can we create symlinks within hadoop is ther any shell
>     commands
>     >> or can we do it thru java....
>     >
>     >
>
>

--
Terry Healy / [EMAIL PROTECTED]
Cyber Security Operations
Brookhaven National Laboratory
Building 515, Upton N.Y. 11973