An input stream that always returns the same RDD on each timestep.
A Discretized Stream (DStream), the basic abstraction in Spark Streaming, is a continuous sequence of RDDs (of the same type) representing a continuous stream of data (see org.
This is the abstract base class for all input streams.
:: Experimental ::
DStream representing the stream of data generated by
mapWithState operation on a
Extra functions available on DStream of (key, value) pairs through an implicit conversion.
Abstract class for defining any org.apache.spark.streaming.dstream.InputDStream that has to start a receiver on worker nodes to receive external data.