I have a problem where a critical step needs to be performed by a third party c++ application. I can send or install this program on the worker nodes. I can construct a function holding all the data this program needs to process. The problem is that the program is designed to read and write from the local file system. I can call the program from Java and read its output as a local file - then deleting all temporary files but I doubt that it is possible to get the program to read from hdfs or any shared file system. My question is can a function running on a worker node create temporary files and pass the names of these to a local process assuming everything is cleaned up after the call?
-- Steven M. Lewis PhD 4221 105th Ave NE Kirkland, WA 98033 206-384-1340 (cell) Skype lordjoe_com
