Major Description
HADOOP-9392 proposes to have customizable token authenticator for services to implement the TokenAuthn method and it was thought supporting pluggable token validation is a significant feature itself so it serves to be addressed in a separate JIRA. It will also consider how to securely transmit token in Hadoop RPC in a way the defends against all of the classical attacks. Note the authentication negotiation and wrapping of Hadoop RPC should be backwards compatible and interoperable with existing deployments, so therefore be SASL based.