   If you choose to download Apache Spark, the installer prompts you for the version. Download it, and configure your SPARK_HOME accordingly:
     </p>
     <pre>What version would you like to download? 1.6.3, 2.0.2, 2.1.0 [2.1.0]: 2.1.0
SPARK_HOME will be set to /Users/USERNAME/spark/spark-2.1.0-bin-hadoop2.7
Downloading Spark 2.1.0
Extracting Spark 2.1.0 to /Users/USERNAME/spark</pre>
     <p>
      <em>
       Tip: If you're using Spark 1.6, and you want to work with PixieDust's sample data (recommended!