Chapter 2. Hadoop Security Design
In Chapter 1, Hadoop Security Overview, we discussed the security considerations for an end-to-end Hadoop-based Big Data ecosystem. In this chapter, we will narrow our focus and take a deep dive into the security design of the Hadoop platform. Hadoop security was implemented as part of the HADOOP-4487 Jira issue, starting in late 2009 (https://issues.apache.org/jira/browse/HADOOP-4487). Currently, there are efforts to implement SSO Authentication in Hadoop. This is currently not production-ready, and hence will be out of scope of this book.
Hadoop security implementation is based on Kerberos. So in this chapter, first we will be provided with a high-level overview of key Kerberos terminologies and concepts, and then we will look into the details of the Hadoop security implementation.
The following are the topics we'll be covering in this chapter:
What is Kerberos?
The Hadoop default security model
The Hadoop Kerberos security implementation
