Ambari is based on Apache Ambari 1.4.1 and includes the following:
AMBARI-3752: MR jobs are hanging on a 2-node cluster with default configuration
AMBARI-3743: YARN dynamic configs generate 0 values nodes
AMBARI-3722: Dynamic configs code needs testcases
AMBARI-3719: YARN default number of containers calculation skewed towards heavier resources
AMBARI-3708: Reconfigure of dynamic configs not showing modified values
AMBARI-3707: YARN dynamic configs generate 0 map/reduce memory on 2GB machines
AMBARI-3697: JS exception trying to calculate dynamic configs in branch-1.4
AMBARI-3678: Change Oozie default log level to INFO
AMBARI-3675: Default value of 'Default virtual memory for a job's map-task' is not valid
AMBARI-3647: Fix the version numbers for all stack components for Stack.
AMBARI-3579: Adding new stack based on hadoop 1.0.
