In this chapter, we learned about data visualization and how it helps the users to receive the required message without any knowledge of the underlying data. We then saw the different ways to visualize our data graphically.
We walked through Hadoop applications such as Apache Druid and Apache Superset that are used to visualize data and learned how to use them with RDBMses such as MySQL. We also saw a sample database to help us understand the application better.
In the next chapter, we will learn how to build our Hadoop cluster on the cloud.