YARN-4644. TestRMRestart fails and findbugs issue in YARN-2928 branch (Varun Saxena via Naganarasimha G R)

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

@@ -550,8 +550,6 @@ public class ResourceTrackerService extends AbstractService implements
     }
 
     // 4. Send status to RMNode, saving the latest response.
-    List<ApplicationId> keepAliveApps =
-        remoteNodeStatus.getKeepAliveApplications();
     RMNodeStatusEvent nodeStatusEvent =
         new RMNodeStatusEvent(nodeId, remoteNodeStatus, nodeHeartBeatResponse);
     if (request.getLogAggregationReportsForApps() != null

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

@@ -874,9 +874,6 @@ public class RMAppImpl implements RMApp, Recoverable {
       this.firstAttemptIdInStateStore = appState.getFirstAttemptId();
       this.nextAttemptId = firstAttemptIdInStateStore;
     }
-
-    // send the ATS create Event
-    sendATSCreateEvent(this, this.startTime);
     //TODO recover collector address.
     //this.collectorAddr = appState.getCollectorAddr();