| /** |
| * 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.assertNotNull; |
| import static org.junit.Assert.assertNotSame; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.common.HdfsConstants.StartupOption; |
| import org.apache.hadoop.hdfs.server.datanode.DataNode.BPOfferService; |
| import org.apache.hadoop.hdfs.server.datanode.FSDataset.VolumeInfo; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestDataNodeMultipleRegistrations { |
| private static final Log LOG = |
| LogFactory.getLog(TestDataNodeMultipleRegistrations.class); |
| Configuration conf; |
| |
| @Before |
| public void setUp() throws Exception { |
| conf = new HdfsConfiguration(); |
| } |
| |
| /** |
| * start multiple NNs and single DN and verifies per BP registrations and |
| * handshakes. |
| * |
| * @throws IOException |
| */ |
| @Test |
| public void test2NNRegistration() throws IOException { |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numNameNodes(2) |
| .nameNodePort(9928).build(); |
| try { |
| cluster.waitActive(); |
| NameNode nn1 = cluster.getNameNode(0); |
| NameNode nn2 = cluster.getNameNode(1); |
| assertNotNull("cannot create nn1", nn1); |
| assertNotNull("cannot create nn2", nn2); |
| |
| String bpid1 = nn1.getFSImage().getBlockPoolID(); |
| String bpid2 = nn2.getFSImage().getBlockPoolID(); |
| String cid1 = nn1.getFSImage().getClusterID(); |
| String cid2 = nn2.getFSImage().getClusterID(); |
| int lv1 = nn1.getFSImage().getLayoutVersion(); |
| int lv2 = nn2.getFSImage().getLayoutVersion(); |
| int ns1 = nn1.getFSImage().getNamespaceID(); |
| int ns2 = nn2.getFSImage().getNamespaceID(); |
| assertNotSame("namespace ids should be different", ns1, ns2); |
| LOG.info("nn1: lv=" + lv1 + ";cid=" + cid1 + ";bpid=" + bpid1 + ";uri=" |
| + nn1.getNameNodeAddress()); |
| LOG.info("nn2: lv=" + lv2 + ";cid=" + cid2 + ";bpid=" + bpid2 + ";uri=" |
| + nn2.getNameNodeAddress()); |
| |
| // check number of volumes in fsdataset |
| DataNode dn = cluster.getDataNodes().get(0); |
| Collection<VolumeInfo> volInfos = ((FSDataset) dn.data).getVolumeInfo(); |
| assertNotNull("No volumes in the fsdataset", volInfos); |
| int i = 0; |
| for (VolumeInfo vi : volInfos) { |
| LOG.info("vol " + i++ + ";dir=" + vi.directory + ";fs= " + vi.freeSpace); |
| } |
| // number of volumes should be 2 - [data1, data2] |
| assertEquals("number of volumes is wrong", 2, volInfos.size()); |
| |
| for (BPOfferService bpos : dn.getAllBpOs()) { |
| LOG.info("reg: bpid=" + "; name=" + bpos.bpRegistration.name + "; sid=" |
| + bpos.bpRegistration.storageID + "; nna=" + bpos.nnAddr); |
| } |
| |
| BPOfferService bpos1 = dn.getAllBpOs()[0]; |
| BPOfferService bpos2 = dn.getAllBpOs()[1]; |
| |
| // The order of bpos is not guaranteed, so fix the order |
| if (bpos1.nnAddr.equals(nn2.getNameNodeAddress())) { |
| BPOfferService tmp = bpos1; |
| bpos1 = bpos2; |
| bpos2 = tmp; |
| } |
| |
| assertEquals("wrong nn address", bpos1.nnAddr, |
| nn1.getNameNodeAddress()); |
| assertEquals("wrong nn address", bpos2.nnAddr, |
| nn2.getNameNodeAddress()); |
| assertEquals("wrong bpid", bpos1.getBlockPoolId(), bpid1); |
| assertEquals("wrong bpid", bpos2.getBlockPoolId(), bpid2); |
| assertEquals("wrong cid", dn.getClusterId(), cid1); |
| assertEquals("cid should be same", cid2, cid1); |
| assertEquals("namespace should be same", |
| bpos1.bpNSInfo.namespaceID, ns1); |
| assertEquals("namespace should be same", |
| bpos2.bpNSInfo.namespaceID, ns2); |
| } finally { |
| cluster.shutdown(); |
| } |
| } |
| |
| /** |
| * starts single nn and single dn and verifies registration and handshake |
| * |
| * @throws IOException |
| */ |
| @Test |
| public void testFedSingleNN() throws IOException { |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf) |
| .nameNodePort(9927).build(); |
| try { |
| NameNode nn1 = cluster.getNameNode(); |
| assertNotNull("cannot create nn1", nn1); |
| |
| String bpid1 = nn1.getFSImage().getBlockPoolID(); |
| String cid1 = nn1.getFSImage().getClusterID(); |
| int lv1 = nn1.getFSImage().getLayoutVersion(); |
| LOG.info("nn1: lv=" + lv1 + ";cid=" + cid1 + ";bpid=" + bpid1 + ";uri=" |
| + nn1.getNameNodeAddress()); |
| |
| // check number of vlumes in fsdataset |
| DataNode dn = cluster.getDataNodes().get(0); |
| Collection<VolumeInfo> volInfos = ((FSDataset) dn.data).getVolumeInfo(); |
| assertNotNull("No volumes in the fsdataset", volInfos); |
| int i = 0; |
| for (VolumeInfo vi : volInfos) { |
| LOG.info("vol " + i++ + ";dir=" + vi.directory + ";fs= " + vi.freeSpace); |
| } |
| // number of volumes should be 2 - [data1, data2] |
| assertEquals("number of volumes is wrong", 2, volInfos.size()); |
| |
| for (BPOfferService bpos : dn.getAllBpOs()) { |
| LOG.info("reg: bpid=" + "; name=" + bpos.bpRegistration.name + "; sid=" |
| + bpos.bpRegistration.storageID + "; nna=" + bpos.nnAddr); |
| } |
| |
| // try block report |
| BPOfferService bpos1 = dn.getAllBpOs()[0]; |
| bpos1.lastBlockReport = 0; |
| bpos1.blockReport(); |
| |
| assertEquals("wrong nn address", bpos1.nnAddr, |
| nn1.getNameNodeAddress()); |
| assertEquals("wrong bpid", bpos1.getBlockPoolId(), bpid1); |
| assertEquals("wrong cid", dn.getClusterId(), cid1); |
| cluster.shutdown(); |
| |
| // Ensure all the BPOfferService threads are shutdown |
| assertEquals(0, dn.getAllBpOs().length); |
| cluster = null; |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @Test |
| public void testClusterIdMismatch() throws IOException { |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numNameNodes(2). |
| nameNodePort(9928).build(); |
| try { |
| cluster.waitActive(); |
| |
| DataNode dn = cluster.getDataNodes().get(0); |
| BPOfferService [] bposs = dn.getAllBpOs(); |
| LOG.info("dn bpos len (should be 2):" + bposs.length); |
| Assert.assertEquals("should've registered with two namenodes", bposs.length,2); |
| |
| // add another namenode |
| cluster.addNameNode(conf, 9938); |
| bposs = dn.getAllBpOs(); |
| LOG.info("dn bpos len (should be 3):" + bposs.length); |
| Assert.assertEquals("should've registered with three namenodes", bposs.length,3); |
| |
| // change cluster id and another Namenode |
| StartupOption.FORMAT.setClusterId("DifferentCID"); |
| cluster.addNameNode(conf, 9948); |
| NameNode nn4 = cluster.getNameNode(3); |
| assertNotNull("cannot create nn4", nn4); |
| |
| bposs = dn.getAllBpOs(); |
| LOG.info("dn bpos len (still should be 3):" + bposs.length); |
| Assert.assertEquals("should've registered with three namenodes", 3, bposs.length); |
| } finally { |
| if(cluster != null) |
| cluster.shutdown(); |
| } |
| } |
| |
| @Test |
| public void testMiniDFSClusterWithMultipleNN() throws IOException { |
| |
| Configuration conf = new HdfsConfiguration(); |
| // start Federated cluster and add a node. |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numNameNodes(2). |
| nameNodePort(9928).build(); |
| Assert.assertNotNull(cluster); |
| Assert.assertEquals("(1)Should be 2 namenodes", 2, cluster.getNumNameNodes()); |
| |
| // add a node |
| cluster.addNameNode(conf, 9929); |
| Assert.assertEquals("(1)Should be 3 namenodes", 3, cluster.getNumNameNodes()); |
| cluster.shutdown(); |
| |
| // 2. start with Federation flag set |
| conf = new HdfsConfiguration(); |
| cluster = new MiniDFSCluster.Builder(conf).federation(true). |
| nameNodePort(9928).build(); |
| Assert.assertNotNull(cluster); |
| Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes()); |
| |
| // add a node |
| cluster.addNameNode(conf, 9929); |
| Assert.assertEquals("(2)Should be 2 namenodes", 2, cluster.getNumNameNodes()); |
| cluster.shutdown(); |
| |
| // 3. start non-federated |
| conf = new HdfsConfiguration(); |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| Assert.assertNotNull(cluster); |
| Assert.assertEquals("(2)Should be 1 namenodes", 1, cluster.getNumNameNodes()); |
| |
| // add a node |
| try { |
| cluster.addNameNode(conf, 9929); |
| Assert.fail("shouldn't be able to add another NN to non federated cluster"); |
| } catch (IOException e) { |
| // correct |
| Assert.assertTrue(e.getMessage().startsWith("cannot add namenode")); |
| Assert.assertEquals("(3)Should be 1 namenodes", 1, cluster.getNumNameNodes()); |
| } finally { |
| cluster.shutdown(); |
| } |
| } |
| |
| |
| } |