Summary

YARN extends security features available in Hadoop and allows enterprises to secure their production clusters. Security for YARN includes the authentication and authorization of services, directories, applications, queues, and so on. In this chapter, you learned about the methods to enable security in a Hadoop-YARN cluster and had an overview of Kerberos with YARN. This chapter also explained usage of ACLs and overview of Hadoop security projects such as Apache Ranger and Knox. In the next chapter, you will learn about the integration of YARN with other big data technologies such as Spark, Storm, and so on.