diff --git a/broker/src/test/java/org/apache/rocketmq/broker/processor/PopBufferMergeServiceTest.java b/broker/src/test/java/org/apache/rocketmq/broker/processor/PopBufferMergeServiceTest.java
index 37e79ef1a37edf09d4d39dc1418a49db15757bb7..4d643cd50fe204c188c4b8d30fc1a3110f1f9dd6 100644
--- a/broker/src/test/java/org/apache/rocketmq/broker/processor/PopBufferMergeServiceTest.java
+++ b/broker/src/test/java/org/apache/rocketmq/broker/processor/PopBufferMergeServiceTest.java
@@ -1,3 +1,19 @@
+/*
+ * 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.rocketmq.broker.processor;
 
 import io.netty.channel.Channel;