RATIS-626. Add missing license in TestArchiveHdfsLogReaderAndWriter.  Contributed by Ankit Singhal
diff --git a/ratis-logservice/src/test/java/org/apache/ratis/logservice/impl/TestArchiveHdfsLogReaderAndWriter.java b/ratis-logservice/src/test/java/org/apache/ratis/logservice/impl/TestArchiveHdfsLogReaderAndWriter.java
index 4213ac8..78a6a72 100644
--- a/ratis-logservice/src/test/java/org/apache/ratis/logservice/impl/TestArchiveHdfsLogReaderAndWriter.java
+++ b/ratis-logservice/src/test/java/org/apache/ratis/logservice/impl/TestArchiveHdfsLogReaderAndWriter.java
@@ -1,3 +1,20 @@
+/*
+ * 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.ratis.logservice.impl;
 
 import java.io.EOFException;