| /** |
| * 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.namenode; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.util.Random; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.viewfs.ConfigUtil; |
| import org.apache.hadoop.fs.viewfs.ViewFileSystem; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology; |
| import org.apache.hadoop.hdfs.protocol.ClientProtocol; |
| import org.apache.hadoop.hdfs.server.balancer.TestBalancer; |
| import org.apache.log4j.Level; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Test fsck with multiple NameNodes |
| */ |
| public class TestFsckWithMultipleNameNodes { |
| static final Logger LOG = |
| LoggerFactory.getLogger(TestFsckWithMultipleNameNodes.class); |
| { |
| DFSTestUtil.setNameNodeLogLevel(Level.ALL); |
| } |
| |
| |
| private static final String FILE_NAME = "/tmp.txt"; |
| private static final Path FILE_PATH = new Path(FILE_NAME); |
| |
| private static final Random RANDOM = new Random(); |
| |
| static { |
| TestBalancer.initTestSetup(); |
| } |
| |
| /** Common objects used in various methods. */ |
| private static class Suite { |
| final MiniDFSCluster cluster; |
| final ClientProtocol[] clients; |
| final short replication; |
| |
| Suite(MiniDFSCluster cluster, final int nNameNodes, final int nDataNodes) |
| throws IOException { |
| this.cluster = cluster; |
| clients = new ClientProtocol[nNameNodes]; |
| for(int i = 0; i < nNameNodes; i++) { |
| clients[i] = cluster.getNameNode(i).getRpcServer(); |
| } |
| replication = (short)Math.max(1, nDataNodes - 1); |
| } |
| |
| /** create a file with a length of <code>fileLen</code> */ |
| private void createFile(int index, long len |
| ) throws IOException, InterruptedException, TimeoutException { |
| final FileSystem fs = cluster.getFileSystem(index); |
| DFSTestUtil.createFile(fs, FILE_PATH, len, replication, RANDOM.nextLong()); |
| DFSTestUtil.waitReplication(fs, FILE_PATH, replication); |
| } |
| |
| } |
| |
| private static Configuration createConf() { |
| final Configuration conf = new HdfsConfiguration(); |
| conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, 1L); |
| conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L); |
| return conf; |
| } |
| |
| private void runTest(final int nNameNodes, final int nDataNodes, |
| Configuration conf) throws Exception { |
| LOG.info("nNameNodes=" + nNameNodes + ", nDataNodes=" + nDataNodes); |
| |
| LOG.info("RUN_TEST -1"); |
| final MiniDFSCluster cluster = new MiniDFSCluster |
| .Builder(conf) |
| .nnTopology(MiniDFSNNTopology.simpleFederatedTopology(nNameNodes)) |
| .numDataNodes(nDataNodes) |
| .build(); |
| LOG.info("RUN_TEST 0"); |
| DFSTestUtil.setFederatedConfiguration(cluster, conf); |
| |
| try { |
| cluster.waitActive(); |
| LOG.info("RUN_TEST 1"); |
| final Suite s = new Suite(cluster, nNameNodes, nDataNodes); |
| for(int i = 0; i < nNameNodes; i++) { |
| s.createFile(i, 1024); |
| } |
| |
| LOG.info("RUN_TEST 2"); |
| final String[] urls = new String[nNameNodes]; |
| for(int i = 0; i < urls.length; i++) { |
| urls[i] = cluster.getFileSystem(i).getUri() + FILE_NAME; |
| LOG.info("urls[" + i + "]=" + urls[i]); |
| final String result = TestFsck.runFsck(conf, 0, false, urls[i]); |
| LOG.info("result=" + result); |
| Assert.assertTrue(result.contains("Status: HEALTHY")); |
| } |
| |
| // Test viewfs |
| // |
| LOG.info("RUN_TEST 3"); |
| final String[] vurls = new String[nNameNodes]; |
| for (int i = 0; i < vurls.length; i++) { |
| String link = "/mount/nn_" + i + FILE_NAME; |
| ConfigUtil.addLink(conf, link, new URI(urls[i])); |
| vurls[i] = "viewfs:" + link; |
| } |
| |
| for(int i = 0; i < vurls.length; i++) { |
| LOG.info("vurls[" + i + "]=" + vurls[i]); |
| final String result = TestFsck.runFsck(conf, 0, false, vurls[i]); |
| LOG.info("result=" + result); |
| Assert.assertTrue(result.contains("Status: HEALTHY")); |
| } |
| } finally { |
| cluster.shutdown(); |
| } |
| LOG.info("RUN_TEST 6"); |
| } |
| |
| /** Test a cluster with even distribution, |
| * then a new empty node is added to the cluster |
| */ |
| @Test |
| public void testFsck() throws Exception { |
| final Configuration conf = createConf(); |
| runTest(3, 1, conf); |
| } |
| |
| } |
| |