In this chapter, we discussed some advanced topics of Spark toward making your Spark job's performance better. We discussed some basic techniques to tune your Spark jobs. We discussed how to monitor your jobs by accessing Spark web UI. We discussed how to set Spark configuration parameters. We also discussed some common mistakes made by Spark users and provided some recommendations. Finally, we discussed some optimization techniques that help tune Spark applications.

In the next chapter, you will see how to test Spark applications and debug to solve most common issues.