In this chapter, we learned to install three major Hadoop ecosystem projects. Sqoop, Hive, and Impala significantly increased the usability of the cluster. There are many more Hadoop ecosystem projects that we can't cover in this book. Most of them are available in CDH repositories, so you can install them when required. In the next chapter, we will cover Hadoop security options. Companies trust their most critical and sensitive data to Hadoop, so it is important to understand how to make this data secure and safe.