YARN-11509. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/FederationInterceptor.java

@@ -1242,14 +1242,22 @@ private void sendRequestsToResourceManagers(
   }
 
   class TokenAndRegisterResponse {
-    Token<AMRMTokenIdentifier> token;
-    RegisterApplicationMasterResponse response;
+    private Token<AMRMTokenIdentifier> token;
+    private RegisterApplicationMasterResponse response;
 
     TokenAndRegisterResponse(Token<AMRMTokenIdentifier> pToken,
         RegisterApplicationMasterResponse pResponse) {
         this.token = pToken;
         this.response = pResponse;
     }
+
+    public Token<AMRMTokenIdentifier> getToken() {
+      return token;
+    }
+
+    public RegisterApplicationMasterResponse getResponse() {
+      return response;
+    }
   }
 
   /**
@@ -1263,16 +1271,15 @@ private List<SubClusterId> registerAndAllocateWithNewSubClusters(
     // Check to see if there are any new sub-clusters in this request
     // list and create and register Unmanaged AM instance for the new ones
     List<SubClusterId> newSubClusters = new ArrayList<>();
-    for (SubClusterId subClusterId : requests.keySet()) {
-      if (!subClusterId.equals(this.homeSubClusterId)
-          && !this.uamPool.hasUAMId(subClusterId.getId())) {
-        newSubClusters.add(subClusterId);
 
+    requests.keySet().stream().forEach(subClusterId -> {
+      String id = subClusterId.getId();
+      if (!subClusterId.equals(this.homeSubClusterId) && !this.uamPool.hasUAMId(id)) {
+        newSubClusters.add(subClusterId);
         // Set sub-cluster to be timed out initially
-        lastSCResponseTime.put(subClusterId,
-            clock.getTime() - subClusterTimeOut);
+        lastSCResponseTime.put(subClusterId, clock.getTime() - subClusterTimeOut);
       }
-    }
+    });
 
     this.uamRegisterFutures.clear();