Greetings, The documentation at http://spark.apache.org/docs/latest/programming-guide.html#passing-functions-to-spark says: "Note that while it is also possible to pass a reference to a method in a class instance (as opposed to a singleton object), this requires sending the object that contains that class along with the method"
First, could someone clarify what is meant by sending the object here? How is the object sent to (presumably) nodes of the cluster? Is it a one time operation per node? Why does this sound like (according to doc) a less preferred option compared to a singleton's function? Would not the nodes require the singleton object anyway? Some clarification would really help. Regards Seref ps: the expression "the object that contains that class" sounds a bit unusual, is the intended meaning "the object that is the instance of that class" ?
