To execute this recipe, you need to have a working Spark environment. If you do not have one, you might want to go back to Chapter 1, Installing and Configuring Spark, and follow the recipes you will find there. 

We will work on the dataset from the introduction. All the code that you will need in this chapter can be found in the GitHub repository we set up for the book: http://bit.ly/2ArlBck. Go to Chapter04 and open the 4.Preparing data for modeling.ipynb notebook. 

No other prerequisites are required.