It's actual title is "Hadoop and Kerberos: The Madness Beyond the Gate" —there's an HP Lovecraft theme of "forbidden knowledge which will drive you insane" which is less a joke and more commentary. it's actually rendered on gitbook If you are working with Kerberos, get a copy of the O'Reilly Hadoop Security book too. My little e-book was written to cover the bits that was left out: to extend rather than replace. Finally, being open source: contributions are welcome ... View more