Currently rdd will copy the contents of an existing file to the new file. If the input file does not exist it will not copy. Changes are needed for rdd such that if the input file provided does not exist, then it will create the file and then does the random copy. File-size for the input file also should be given as an argument.
CHANGE: http://review.gluster.com/596 (rdd takes input file and copies the its data to the specified output) merged in master by Vijay Bellur (vijay)
Tested with glusterfs-3.3.0qa22. Now rdd creates the input file if the file does not exist and the filesize can also be given as an argument.