hadoop-hdfs-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Vinod Kumar Vavilapalli <vino...@hortonworks.com>
Subject Re: how to create symbolic link in hdfs with c++ code or webhdfs interface?
Date Fri, 13 Dec 2013 18:25:12 GMT
What version of Hadoop?


On Dec 13, 2013, at 1:57 AM, Xiaobin She <xiaobinshe@gmail.com> 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++
> 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.

View raw message