[120] | 1 | /** |
---|
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
---|
| 3 | * or more contributor license agreements. See the NOTICE file |
---|
| 4 | * distributed with this work for additional information |
---|
| 5 | * regarding copyright ownership. The ASF licenses this file |
---|
| 6 | * to you under the Apache License, Version 2.0 (the |
---|
| 7 | * "License"); you may not use this file except in compliance |
---|
| 8 | * with the License. You may obtain a copy of the License at |
---|
| 9 | * |
---|
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
---|
| 11 | * |
---|
| 12 | * Unless required by applicable law or agreed to in writing, software |
---|
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
---|
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
---|
| 15 | * See the License for the specific language governing permissions and |
---|
| 16 | * limitations under the License. |
---|
| 17 | */ |
---|
| 18 | |
---|
| 19 | package org.apache.hadoop.hdfs; |
---|
| 20 | |
---|
| 21 | import junit.framework.TestCase; |
---|
| 22 | import java.io.*; |
---|
| 23 | import java.net.InetSocketAddress; |
---|
| 24 | import java.util.Iterator; |
---|
| 25 | import java.util.LinkedList; |
---|
| 26 | import java.util.TreeMap; |
---|
| 27 | import java.util.zip.CRC32; |
---|
| 28 | |
---|
| 29 | import org.apache.hadoop.conf.Configuration; |
---|
| 30 | import org.apache.hadoop.fs.FSInputStream; |
---|
| 31 | import org.apache.hadoop.fs.FileStatus; |
---|
| 32 | import org.apache.hadoop.fs.FileUtil; |
---|
| 33 | import org.apache.hadoop.hdfs.protocol.FSConstants; |
---|
| 34 | import org.apache.hadoop.hdfs.server.common.HdfsConstants.StartupOption; |
---|
| 35 | import org.apache.commons.logging.Log; |
---|
| 36 | import org.apache.commons.logging.LogFactory; |
---|
| 37 | |
---|
| 38 | /** |
---|
| 39 | * This tests data transfer protocol handling in the Datanode. It sends |
---|
| 40 | * various forms of wrong data and verifies that Datanode handles it well. |
---|
| 41 | * |
---|
| 42 | * This test uses the following two file from src/test/.../dfs directory : |
---|
| 43 | * 1) hadoop-version-dfs-dir.tgz : contains DFS directories. |
---|
| 44 | * 2) hadoop-dfs-dir.txt : checksums that are compared in this test. |
---|
| 45 | * Please read hadoop-dfs-dir.txt for more information. |
---|
| 46 | */ |
---|
| 47 | public class TestDFSUpgradeFromImage extends TestCase { |
---|
| 48 | |
---|
| 49 | private static final Log LOG = LogFactory.getLog( |
---|
| 50 | "org.apache.hadoop.hdfs.TestDFSUpgradeFromImage"); |
---|
| 51 | |
---|
| 52 | public int numDataNodes = 4; |
---|
| 53 | |
---|
| 54 | private static class ReferenceFileInfo { |
---|
| 55 | String path; |
---|
| 56 | long checksum; |
---|
| 57 | } |
---|
| 58 | |
---|
| 59 | LinkedList<ReferenceFileInfo> refList = new LinkedList<ReferenceFileInfo>(); |
---|
| 60 | Iterator<ReferenceFileInfo> refIter; |
---|
| 61 | |
---|
| 62 | boolean printChecksum = false; |
---|
| 63 | |
---|
| 64 | protected void setUp() throws IOException { |
---|
| 65 | unpackStorage(); |
---|
| 66 | } |
---|
| 67 | |
---|
| 68 | public void unpackStorage() throws IOException { |
---|
| 69 | String tarFile = System.getProperty("test.cache.data", "build/test/cache") + |
---|
| 70 | "/hadoop-14-dfs-dir.tgz"; |
---|
| 71 | String dataDir = System.getProperty("test.build.data", "build/test/data"); |
---|
| 72 | File dfsDir = new File(dataDir, "dfs"); |
---|
| 73 | if ( dfsDir.exists() && !FileUtil.fullyDelete(dfsDir) ) { |
---|
| 74 | throw new IOException("Could not delete dfs directory '" + dfsDir + "'"); |
---|
| 75 | } |
---|
| 76 | FileUtil.unTar(new File(tarFile), new File(dataDir)); |
---|
| 77 | //Now read the reference info |
---|
| 78 | |
---|
| 79 | BufferedReader reader = new BufferedReader( |
---|
| 80 | new FileReader(System.getProperty("test.cache.data", "build/test/cache") + |
---|
| 81 | "/hadoop-dfs-dir.txt")); |
---|
| 82 | String line; |
---|
| 83 | while ( (line = reader.readLine()) != null ) { |
---|
| 84 | |
---|
| 85 | line = line.trim(); |
---|
| 86 | if (line.length() <= 0 || line.startsWith("#")) { |
---|
| 87 | continue; |
---|
| 88 | } |
---|
| 89 | String[] arr = line.split("\\s+\t\\s+"); |
---|
| 90 | if (arr.length < 1) { |
---|
| 91 | continue; |
---|
| 92 | } |
---|
| 93 | if (arr[0].equals("printChecksums")) { |
---|
| 94 | printChecksum = true; |
---|
| 95 | break; |
---|
| 96 | } |
---|
| 97 | if (arr.length < 2) { |
---|
| 98 | continue; |
---|
| 99 | } |
---|
| 100 | ReferenceFileInfo info = new ReferenceFileInfo(); |
---|
| 101 | info.path = arr[0]; |
---|
| 102 | info.checksum = Long.parseLong(arr[1]); |
---|
| 103 | refList.add(info); |
---|
| 104 | } |
---|
| 105 | reader.close(); |
---|
| 106 | } |
---|
| 107 | |
---|
| 108 | private void verifyChecksum(String path, long checksum) throws IOException { |
---|
| 109 | if ( refIter == null ) { |
---|
| 110 | refIter = refList.iterator(); |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | if ( printChecksum ) { |
---|
| 114 | LOG.info("CRC info for reference file : " + path + " \t " + checksum); |
---|
| 115 | } else { |
---|
| 116 | if ( !refIter.hasNext() ) { |
---|
| 117 | throw new IOException("Checking checksum for " + path + |
---|
| 118 | "Not enough elements in the refList"); |
---|
| 119 | } |
---|
| 120 | ReferenceFileInfo info = refIter.next(); |
---|
| 121 | // The paths are expected to be listed in the same order |
---|
| 122 | // as they are traversed here. |
---|
| 123 | assertEquals(info.path, path); |
---|
| 124 | assertEquals("Checking checksum for " + path, info.checksum, checksum); |
---|
| 125 | } |
---|
| 126 | } |
---|
| 127 | |
---|
| 128 | CRC32 overallChecksum = new CRC32(); |
---|
| 129 | |
---|
| 130 | private void verifyDir(DFSClient client, String dir) |
---|
| 131 | throws IOException { |
---|
| 132 | |
---|
| 133 | FileStatus[] fileArr = client.listPaths(dir); |
---|
| 134 | TreeMap<String, Boolean> fileMap = new TreeMap<String, Boolean>(); |
---|
| 135 | |
---|
| 136 | for(FileStatus file : fileArr) { |
---|
| 137 | String path = file.getPath().toString(); |
---|
| 138 | fileMap.put(path, Boolean.valueOf(file.isDir())); |
---|
| 139 | } |
---|
| 140 | |
---|
| 141 | for(Iterator<String> it = fileMap.keySet().iterator(); it.hasNext();) { |
---|
| 142 | String path = it.next(); |
---|
| 143 | boolean isDir = fileMap.get(path); |
---|
| 144 | |
---|
| 145 | overallChecksum.update(path.getBytes()); |
---|
| 146 | |
---|
| 147 | if ( isDir ) { |
---|
| 148 | verifyDir(client, path); |
---|
| 149 | } else { |
---|
| 150 | // this is not a directory. Checksum the file data. |
---|
| 151 | CRC32 fileCRC = new CRC32(); |
---|
| 152 | FSInputStream in = client.open(path); |
---|
| 153 | byte[] buf = new byte[4096]; |
---|
| 154 | int nRead = 0; |
---|
| 155 | while ( (nRead = in.read(buf, 0, buf.length)) > 0 ) { |
---|
| 156 | fileCRC.update(buf, 0, nRead); |
---|
| 157 | } |
---|
| 158 | |
---|
| 159 | verifyChecksum(path, fileCRC.getValue()); |
---|
| 160 | } |
---|
| 161 | } |
---|
| 162 | } |
---|
| 163 | |
---|
| 164 | private void verifyFileSystem(DFSClient client) throws IOException { |
---|
| 165 | |
---|
| 166 | verifyDir(client, "/"); |
---|
| 167 | |
---|
| 168 | verifyChecksum("overallCRC", overallChecksum.getValue()); |
---|
| 169 | |
---|
| 170 | if ( printChecksum ) { |
---|
| 171 | throw new IOException("Checksums are written to log as requested. " + |
---|
| 172 | "Throwing this exception to force an error " + |
---|
| 173 | "for this test."); |
---|
| 174 | } |
---|
| 175 | } |
---|
| 176 | |
---|
| 177 | public void testUpgradeFromImage() throws IOException { |
---|
| 178 | MiniDFSCluster cluster = null; |
---|
| 179 | try { |
---|
| 180 | Configuration conf = new Configuration(); |
---|
| 181 | if (System.getProperty("test.build.data") == null) { // to allow test to be run outside of Ant |
---|
| 182 | System.setProperty("test.build.data", "build/test/data"); |
---|
| 183 | } |
---|
| 184 | conf.setInt("dfs.datanode.scan.period.hours", -1); // block scanning off |
---|
| 185 | cluster = new MiniDFSCluster(0, conf, numDataNodes, false, true, |
---|
| 186 | StartupOption.UPGRADE, null); |
---|
| 187 | cluster.waitActive(); |
---|
| 188 | DFSClient dfsClient = new DFSClient(new InetSocketAddress("localhost", |
---|
| 189 | cluster.getNameNodePort()), conf); |
---|
| 190 | //Safemode will be off only after upgrade is complete. Wait for it. |
---|
| 191 | while ( dfsClient.setSafeMode(FSConstants.SafeModeAction.SAFEMODE_GET) ) { |
---|
| 192 | LOG.info("Waiting for SafeMode to be OFF."); |
---|
| 193 | try { |
---|
| 194 | Thread.sleep(1000); |
---|
| 195 | } catch (InterruptedException ignored) {} |
---|
| 196 | } |
---|
| 197 | |
---|
| 198 | verifyFileSystem(dfsClient); |
---|
| 199 | } finally { |
---|
| 200 | if (cluster != null) { cluster.shutdown(); } |
---|
| 201 | } |
---|
| 202 | } |
---|
| 203 | } |
---|