To Vinod, thank you for your reply, I found that I got this error message because I did not add the following property in the hdfs-site.xml file
28 <property> 29 <name>test.SymlinkEnabledForTesting</name> 30 <value>true</value> 31 </property> now the problem is solved. thanks again. 2013/12/14 Vinod Kumar Vavilapalli <vino...@hortonworks.com> > What version of Hadoop? > > Thanks, > +Vinod > > On Dec 13, 2013, at 1:57 AM, Xiaobin She <xiaobin...@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++ code? > > thank you very much for your help. > > > > CONFIDENTIALITY NOTICE > 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.
