YARN-5531. UnmanagedAM pool manager for federating application across clusters.
(Botong Huang via Subru).
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/c73abec4
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/c73
http://git-wip-us.apache.org/repos/asf/hadoop/blob/c4972fa7/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ApplicationMasterService.java
---