title: Watson Studio "Spark Environment" - how to increase `spark.driver.maxResultSize`?
body: <p>I'm running a spark job where I'm reading, manipulating and merging a lot of txt files into a single file, but I'm hitting this issue:</p>
  
  <blockquote>
    <p>Py4JJavaError: An error occurred while calling o8483.collectToPython.
    : org.apache.spark.SparkException: Job aborted due to stage failure: Total size of serialized results of 838 tasks (1025.6 MB) is bigger than spark.driver.maxResultSize (1024.0 MB)</p>
  </blockquote>
  
  <p>Is it possible to increase the size of <code>spark.driver.maxResultSize</code>?</p>
  
  <p>Note: this question is about the WS Spark “Environments” NOT about Analytics Engine.</p>