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


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

Thanks,
+Vinod

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.
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB