Update CHANGES.txt separately for clean cherry-picks.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1424245 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -13,9 +13,6 @@ Trunk - Unreleased
 
     YARN-84. Use Builder to build RPC server. (Brandon Li via suresh)
 
-    YARN-57. Allow process-tree based resource calculation et al. to be
-    pluggable to support it on multiple platforms. (Radim Kolar via acmurthy)
-
   OPTIMAZATIONS
 
   BUG FIXES
@@ -33,6 +30,12 @@ Release 2.0.3-alpha - Unreleased
 
   IMPROVEMENTS
 
+    YARN-223. Update process tree instead of getting new process trees.
+    (Radim Kolar via llu)
+
+    YARN-57. Allow process-tree based resource calculation et al. to be
+    pluggable to support it on multiple platforms. (Radim Kolar via acmurthy)
+
     YARN-78. Changed UnManagedAM application to use YarnClient. (Bikas Saha via
     vinodkv)