YARN-11446. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/RouterMetrics.java

@@ -295,7 +295,7 @@ public final class RouterMetrics {
   private MutableRate totalSucceededGetClusterInfoRetrieved;
   @Metric("Total number of successful Retrieved GetClusterUserInfoRetrieved and latency(ms)")
   private MutableRate totalSucceededGetClusterUserInfoRetrieved;
-  
+
   /**
    * Provide quantile counters for all latencies.
    */
@@ -889,7 +889,7 @@ public long getNumSucceededUpdateSchedulerConfigurationRetrieved() {
   public long getNumSucceededGetSchedulerConfigurationRetrieved() {
     return totalSucceededGetSchedulerConfigurationRetrieved.lastStat().numSamples();
   }
-  
+
   @VisibleForTesting
   public long getNumSucceededGetClusterInfoRetrieved() {
     return totalSucceededGetClusterInfoRetrieved.lastStat().numSamples();
@@ -1199,7 +1199,7 @@ public double getLatencySucceededUpdateSchedulerConfigurationRetrieved() {
   public double getLatencySucceededGetSchedulerConfigurationRetrieved() {
     return totalSucceededGetSchedulerConfigurationRetrieved.lastStat().mean();
   }
-  
+
   @VisibleForTesting
   public double getLatencySucceededGetClusterInfoRetrieved() {
     return totalSucceededGetClusterInfoRetrieved.lastStat().mean();
@@ -1454,15 +1454,15 @@ public int getNumAddToClusterNodeLabelsFailedRetrieved() {
   public int getNumRemoveFromClusterNodeLabelsFailedRetrieved() {
     return numRemoveFromClusterNodeLabelsFailedRetrieved.value();
   }
-  
+
   public int getUpdateSchedulerConfigurationFailedRetrieved() {
     return numUpdateSchedulerConfigurationFailedRetrieved.value();
   }
 
   public int getSchedulerConfigurationFailedRetrieved() {
     return numGetSchedulerConfigurationFailedRetrieved.value();
   }
-  
+
   public int getClusterInfoFailedRetrieved() {
     return numGetClusterInfoFailedRetrieved.value();
   }
@@ -1783,7 +1783,7 @@ public void succeededGetSchedulerConfigurationRetrieved(long duration) {
     totalSucceededGetSchedulerConfigurationRetrieved.add(duration);
     getSchedulerConfigurationLatency.add(duration);
   }
-  
+
   public void succeededGetClusterInfoRetrieved(long duration) {
     totalSucceededGetClusterInfoRetrieved.add(duration);
     getClusterInfoLatency.add(duration);
@@ -2021,7 +2021,7 @@ public void incrUpdateSchedulerConfigurationFailedRetrieved() {
   public void incrGetSchedulerConfigurationFailedRetrieved() {
     numGetSchedulerConfigurationFailedRetrieved.incr();
   }
-  
+
   public void incrGetClusterInfoFailedRetrieved() {
     numGetClusterInfoFailedRetrieved.incr();
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/TestRouterMetrics.java

@@ -578,7 +578,7 @@ public void updateSchedulerConfigurationFailedRetrieved() {
       LOG.info("Mocked: failed updateSchedulerConfiguration call");
       metrics.incrUpdateSchedulerConfigurationFailedRetrieved();
     }
-    
+
     public void getClusterInfoFailed() {
       LOG.info("Mocked: failed getClusterInfo call");
       metrics.incrGetClusterInfoFailedRetrieved();
@@ -868,7 +868,7 @@ public void getUpdateSchedulerConfigurationRetrieved(long duration) {
       LOG.info("Mocked: successful UpdateSchedulerConfiguration call with duration {}", duration);
       metrics.succeededUpdateSchedulerConfigurationRetrieved(duration);
     }
-    
+
     public void getClusterInfoRetrieved(long duration) {
       LOG.info("Mocked: successful GetClusterInfoRetrieved call with duration {}", duration);
       metrics.succeededGetClusterInfoRetrieved(duration);
@@ -1934,7 +1934,7 @@ public void testUpdateSchedulerConfigurationRetrieved() {
     Assert.assertEquals(225,
         metrics.getLatencySucceededUpdateSchedulerConfigurationRetrieved(), ASSERT_DOUBLE_DELTA);
   }
-  
+
   @Test
   public void testGetClusterInfoRetrievedFailed() {
     long totalBadBefore = metrics.getClusterInfoFailedRetrieved();

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/webapp/MockDefaultRequestInterceptorREST.java

@@ -1390,7 +1390,7 @@ public Response getSchedulerConfiguration(HttpServletRequest req) throws Authori
     return Response.status(Status.OK).entity(new ConfInfo(mockRM.getConfig()))
         .build();
   }
-  
+
   public ClusterInfo getClusterInfo() {
     ClusterInfo clusterInfo = new ClusterInfo(mockRM);
     return clusterInfo;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/webapp/TestFederationInterceptorREST.java

@@ -2167,7 +2167,7 @@ public void testGetSchedulerConfiguration() throws Exception {
       Assert.assertTrue(subClusterSet.contains(confInfo.getSubClusterId()));
     }
   }
-  
+
   @Test
   public void testGetClusterUserInfo() {
     String requestUserName = "test-user";
@@ -2241,7 +2241,7 @@ public void testUpdateSchedulerConfiguration()
     String entityMsg = String.valueOf(entity);
     Assert.assertEquals(expectMsg, entityMsg);
   }
-  
+
   @Test
   public void testGetClusterInfo() {
     ClusterInfo clusterInfos = interceptor.getClusterInfo();