http://git-wip-us.apache.org/repos/asf/hadoop/blob/5ccdd839/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.java
http://git-wip-us.apache.org/repos/asf/hadoop/blob/b6e7d136/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.java