diff --git a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/security/RouterSecurityAuditLogger.java b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/security/RouterSecurityAuditLogger.java
index 0c4b4b9d275..6eb5fe0ac80 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/security/RouterSecurityAuditLogger.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/security/RouterSecurityAuditLogger.java
@@ -1,3 +1,21 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.apache.hadoop.hdfs.server.federation.router.security;
 
 import org.apache.hadoop.classification.VisibleForTesting;
@@ -14,7 +32,7 @@ import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_C
 
 public class RouterSecurityAuditLogger {
 
-  public static final Logger auditLog = LoggerFactory.getLogger(
+  public static final Logger AUDIT_LOG = LoggerFactory.getLogger(
       RouterSecurityManager.class.getName() + ".audit");
 
   private static final ThreadLocal<StringBuilder> STRING_BUILDER =
@@ -40,7 +58,7 @@ public class RouterSecurityAuditLogger {
   public void logAuditEvent(boolean succeeded, String userName,
                             InetAddress addr, String cmd,
                             CallerContext callerContext, String tokenId) {
-    if (auditLog.isDebugEnabled() || auditLog.isInfoEnabled()) {
+    if (AUDIT_LOG.isDebugEnabled() || AUDIT_LOG.isInfoEnabled()) {
       logAuditMessage(
           creatAuditLog(succeeded, userName, addr, cmd, callerContext,
               tokenId));
@@ -85,7 +103,7 @@ public class RouterSecurityAuditLogger {
   }
 
   private void logAuditMessage(String message) {
-    auditLog.info(message);
+    AUDIT_LOG.info(message);
   }
 
 }
\ No newline at end of file