Merge r1601537 from trunk. YARN-2030. Augmented RMStateStore with state machine. Contributed by Binglin Chang

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1601539 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -134,7 +134,7 @@ Release 2.5.0 - UNRELEASED
     YARN-2132. ZKRMStateStore.ZKAction#runWithRetries doesn't log the exception
     it encounters. (Vamsee Yarlagadda via kasha)
 
-    YARN-2030. Augmented RMStateStore with state machine. (Binglin Chang via jianhe)
+    YARN-2030. Augmented RMStateStore with state machine.(Binglin Chang via jianhe)
 
   OPTIMIZATIONS