@@ -0,0 +1,1677 @@
+/**%0A * Licensed to the Apache Software Foundation (ASF) under one%0A * or more contributor license agreements.  See the NOTICE file%0A * distributed with this work for additional information%0A * regarding copyright ownership.  The ASF licenses this file%0A * to you under the Apache License, Version 2.0 (the%0A * %22License%22); you may not use this file except in compliance%0A * with the License.  You may obtain a copy of the License at%0A *%0A *     http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0Apackage org.apache.hadoop.hdfs.server.datanode;%0A%0Aimport org.apache.hadoop.conf.Configuration;%0Aimport org.apache.hadoop.hdfs.DFSConfigKeys;%0Aimport org.apache.hadoop.hdfs.MiniDFSCluster;%0Aimport org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck;%0Aimport org.junit.Assert;%0Aimport org.junit.Test;%0A%0Aimport java.io.IOException;%0A%0Apublic class TestDataNodeECN %7B%0A  @Test%0A  public void testECNFlag() throws IOException %7B%0A    Configuration conf = new Configuration();%0A    conf.setBoolean(DFSConfigKeys.DFS_PIPELINE_ECN_ENABLED, true);%0A    MiniDFSCluster cluster = null;%0A    try %7B%0A      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();%0A      PipelineAck.ECN ecn = cluster.getDataNodes().get(0).getECN();%0A      Assert.assertNotEquals(PipelineAck.ECN.DISABLED, ecn);%0A    %7D finally %7B%0A      if (cluster != null) %7B%0A        cluster.shutdown();%0A      %7D%0A    %7D%0A  %7D%0A%7D%0A

Add the missing files for HDFS-8009.