>From the configuration page: 'To set a system property for configuring Spark, you need to either pass it with a -D flag to the JVM (for example java -Dspark.cores.max=5 MyProgram) or call System.setProperty in your code *before* creating your Spark context, as follows:'
Since running spark-shell provides you with a Spark Context, the only way to set system properties when running spark-shell seems to be passing the -D flag to the JVM. How do you do this when using the start-* scripts in /bin? thanks! Umar