took me a long time to fix the maven dependency compatibility problem, Apache httpcore library was relocated through maven shade plugin.
Remove broadcasted hadoop Configuration from Conf singleton (it doesn't work in cluster mode as it is usually initialized before sc is generated through submission), now it is properly delegated to RDDFunctions.
remove local simulation related stuff in all SparkConf in examples, they are now runnable through spark-submit
rename spike package
error dump nolonger support hdfs (unsafe and hard to manage architecture)
minor refactoring