Fix typo in ArgumentName.QUERY
fix incorrect usages of ByteBuffer.array()
better impl of Bytes.toString()
Spark Integration: Inc spark program timeout in test
Spark Integration: SparkContext is closed by ProgramRunTimeService
Move Spark Program stop call (which in turn close Spark Context) to the place where it was instantiated. Also have small refactoring to simplify the code in the SparkProgramWrapper.
Spark Examples: Fix sparkkmeans procedure for invalid index