| /** |
| * 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.datanode; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.Set; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology.NNConf; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology.NSConf; |
| import org.junit.Test; |
| |
| import com.google.common.base.Joiner; |
| import com.google.common.collect.Sets; |
| |
| /** |
| * Tests datanode refresh namenode list functionality. |
| */ |
| public class TestRefreshNamenodes { |
| private final int nnPort1 = 2221; |
| private final int nnPort2 = 2224; |
| private final int nnPort3 = 2227; |
| private final int nnPort4 = 2230; |
| |
| @Test |
| public void testRefreshNamenodes() throws IOException { |
| // Start cluster with a single NN and DN |
| Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = null; |
| try { |
| MiniDFSNNTopology topology = new MiniDFSNNTopology() |
| .addNameservice(new NSConf("ns1").addNN( |
| new NNConf(null).setIpcPort(nnPort1))) |
| .setFederation(true); |
| cluster = new MiniDFSCluster.Builder(conf) |
| .nnTopology(topology) |
| .build(); |
| |
| DataNode dn = cluster.getDataNodes().get(0); |
| assertEquals(1, dn.getAllBpOs().size()); |
| |
| cluster.addNameNode(conf, nnPort2); |
| assertEquals(2, dn.getAllBpOs().size()); |
| |
| cluster.addNameNode(conf, nnPort3); |
| assertEquals(3, dn.getAllBpOs().size()); |
| |
| cluster.addNameNode(conf, nnPort4); |
| |
| // Ensure a BPOfferService in the datanodes corresponds to |
| // a namenode in the cluster |
| Set<InetSocketAddress> nnAddrsFromCluster = Sets.newHashSet(); |
| for (int i = 0; i < 4; i++) { |
| assertTrue(nnAddrsFromCluster.add( |
| cluster.getNameNode(i).getNameNodeAddress())); |
| } |
| |
| Set<InetSocketAddress> nnAddrsFromDN = Sets.newHashSet(); |
| for (BPOfferService bpos : dn.getAllBpOs()) { |
| for (BPServiceActor bpsa : bpos.getBPServiceActors()) { |
| assertTrue(nnAddrsFromDN.add(bpsa.getNNSocketAddress())); |
| } |
| } |
| |
| assertEquals("", |
| Joiner.on(",").join( |
| Sets.symmetricDifference(nnAddrsFromCluster, nnAddrsFromDN))); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| } |