User authentication in Hue
Cloudera Data Platform services do not authenticate each user that logs in to Hue. The Cloudera Data Platform services authenticate Hue and trust that Hue has authenticated its users. In a most typical configuration, Hue users can be authenticated with an LDAP server and the Cloudera Data Platform users can be authenticated with Kerberos. You can also use SAML for Single Sign-on (SSO) authentication.
After Hue is authenticated by a service such as Hive, Hue impersonates the user requesting the use of that service, for example, to create a Hive table. In this case, the Hive service uses Apache Ranger to ensure that the group to which the user belonged is authorized for that action (to create a Hive table).