title: Dummy step is not work in Job
body: <p>Each transformation will create an csv file in a folder, and I want to upload all of them when transformations done. I add a <code>Dummy</code> but the process didn't work as my expectation. Each transformation will execute <code>Hadoop Copy Files</code> step. Why? And how could I design the flow? Thanks.</p>
  
  <p><img src="https://i.stack.imgur.com/hGsN6.png" alt="enter image description here"></p>