Use the The Dummy job entry to do nothing in a job. This can be useful to make job drawings clearer or does nothing. It is just an entry point on the canvas; however, suppose you have a transformation that processes one row at a time. You have set the transformation so that it gets the initial five records and processes the additional records five at a time. The Job script must determine whether or not processing is complete. It may need to loop back over a few times. The job workflow drawing could be tough to read in this type of scenario. The Dummy job entry makes the job workflow drawing clearer for looping. Dummy performs no evaluation.
Warning: Although it is possible to create a recursive, never ending loop, you should be aware that such a job will fail with an out of memory or stack error after too many iterations.