In Chapter 4 we discussed how to process structured data using DataFrames, Spark SQL, and Datasets.
The recommended background for this chapter is some prior experience with Scala.
In this chapter, we are going to focus on real-time processing using Apache Spark. We will be focusing on these areas:
Data processing.
Streaming data.
Why streaming data are important.
Introduction to Spark Streaming.
Spark Streaming example using TCP Socket.
Stateful streaming. ...
