title: Flink: How to write DataSet to a variable instead of to a file
body: <p>I have a flink batch program written in scala using the DataSet API which results in a final dataset I am interested in. I would like to get that dataset as a variable or value (e.g. a list or sequence of String) within my program, without having to write it to any file. Is it possible?</p>
  
  <p>I have seen that flink allows for collection data sinks in order to debug (the only example in their doc is in Java). However, this is only allowed in local execution, and anyway I don't know its equivalent in Scala. What I would like is to write the final resulting dataset after the whole flink parallel execution is done to a program value or variable.</p>