Added Ubuntu host support.
Added support to upgrade Ambari.
Added support for Oracle JDK 1.7 and Open JDK 7.
Added the DATE dataytpe.
Added NameNode HA support (Hadoop 2).
Enhanced Sqpoop HCatalog support to allow direct mode connection manager implementations.
Added Security documentation on wire encryption, encrypted shuffle, and JDBC encryption.
Apache Ambari updated to version 1.4.1. This release of Apache Ambari includes the new features and improvements:
Added Hadoop 2 Stack option to Ambari.
Added support for enabling NameNode HA (for Hadoop 2 Stack).
Added support for Oracle JDK 1.7 and Open JDK 7.
Added Ambari Agent host-level Nagios alert.
Added Host Checks and cleanup script during Cluster Install and Add Hosts wizards.
