This release (1.2.2.5) of Apache Ambari includes the new features and improvements:
Host level alerts
Paging controls on zoomed graphs
Ability to change Ambari Web HTTP port
Support for Active Directory-based authentication
AMBARI-1757: Add support for Stack 1.2.2 to Ambari
AMBARI-1641: Add support for additional TaskTracker metrics in API
AMBARI-1748: Custom JDK path added through UI now passed to global parameters
