Summary
This concludes the part of the course about Spark core, covering the things you can do with Spark itself. We did pretty much everything there is to do, and we actually ran a million ratings, and analyzed on a real cluster in the cloud using Spark. So congratulations, if you've got this far! You are now pretty knowledgeable about Spark. In the next chapter, we'll talk about some of the technologies built on top of Spark that are still part of this greater Spark package.