Yes, any machine that has network access to the cluster can read/write to hdfs. It does not need to be part of the cluster or running any hadoop daemons.
Such a client just needs to have hadoop set up on it and the configuration details for contacting the namenode. If using the hadoop command line, this means that the hadoop xml config files have to be set up. If you embed the hadoop jars in your own app, you have to provide the config information via files or programatically. Essentially, the client only needs to know how to contact the namenode. The namenode will automatically tell the hdfs client how to communicate to each datanode for storing or getting data. On 6/14/09 8:54 PM, "Sugandha Naolekar" <sugandha....@gmail.com> wrote: Hello! I want to execute all my code on a machine that's remote(not a part of hadoop cluster). This code includes ::file transfers between any nodes (remote or within hadoop cluster or within same LAN)-irrespective.; and HDFS. I will have to simply write a code for this. Is it possible? Thanks, Regards- -- Regards! Sugandha
