HBASE-6117 Revisit default condition added to Switch cases in Trunk

Submitted by:Ram	
Reviewed by:Stack	


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1357356 13f79535-47bb-0310-9956-ffa450edef68

hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java

@@ -3150,6 +3150,10 @@ public class AssignmentManager extends ZooKeeperListener {
         invokeUnassign(regionInfo);
         break;
         
+      case SPLIT:
+      case SPLITTING:
+        break;
+        
       default:
         throw new IllegalStateException("Received event is not valid.");
       }