Summary
We've covered a lot of ground in this chapter, and I hope it's given you an idea of the kinds of things that you can do with Spark and the power that it gives you. Please do continue to explore and experiment with these examples, altering things to see how they function and gaining familiarity with the workings of Spark. In the next chapter, we're going to turn our attention to the cloud and start working with really big data when we find out how to run Spark on a cluster.