YARN-3677. Fix findbugs warnings in yarn-server-resourcemanager. Contributed by Vinod Kumar Vavilapalli.

(cherry picked from commit 7401e5b5e8060b6b027d714b5ceb641fcfe5b598)

hadoop-yarn-project/CHANGES.txt

@@ -100,6 +100,9 @@ Release 2.7.1 - UNRELEASED
 
     YARN-3601. Fix UT TestRMFailover.testRMWebAppRedirect. (Weiwei Yang via xgong)
 
+    YARN-3677. Fix findbugs warnings in yarn-server-resourcemanager.
+    (Vinod Kumar Vavilapalli via ozawa)
+
 Release 2.7.0 - 2015-04-20
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMAppManager.java

@@ -230,6 +230,7 @@ public class RMAppManager implements EventHandler<RMAppManagerEvent>,
         success = true;
         break;
       default:
+        break;
     }
     
     if (success) {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java

@@ -98,7 +98,7 @@ public class FileSystemRMStateStore extends RMStateStore {
   private Path dtSequenceNumberPath = null;
   private int fsNumRetries;
   private long fsRetryInterval;
-  private boolean isHDFS;
+  private volatile boolean isHDFS;
 
   @VisibleForTesting
   Path fsWorkingPath;