Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Hadoop >> mail # user >> Re: how to create symbolic link in hdfs with c++ code or webhdfs interface?

Copy link to this message
Re: how to create symbolic link in hdfs with c++ code or webhdfs interface?
What version of Hadoop?


On Dec 13, 2013, at 1:57 AM, Xiaobin She <[EMAIL PROTECTED]> wrote:

> I'm writting an c++ programme, and I need to deal with hdfs.
> What I need is to create some file in hdfs and read the status of these files.
> And I need to be able to create sym link in hdfs and need to know if an file in hdfs is an sym link file or not.
> According to what I have known, the c client lib of hdfs ( which is libhdfs) does not support sym link.
> And I have notice that there is an webhdfs interface for hdfs.
> According to this page, it does support sym link.
> http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Create_a_Symbolic_Link
> But I have try this, and I got the following message.
> {"RemoteException":{"exception":"UnsupportedOperationException","javaClassName":"java.lang.UnsupportedOperationException","message":"Symlinks not supported"}}
> Does this means webhdfs does not support sym link too ?
> So if this true, how can I create an sym link and get the status of this file in c++ code?
> thank you very much for your help.
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.