[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.hdfs; |
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| 19 | |
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| 20 | import junit.framework.TestCase; |
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| 21 | import java.io.*; |
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| 22 | import java.util.Random; |
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| 23 | import java.net.*; |
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| 24 | import org.apache.hadoop.conf.Configuration; |
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| 25 | import org.apache.hadoop.hdfs.protocol.DatanodeInfo; |
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| 26 | import org.apache.hadoop.hdfs.protocol.FSConstants.DatanodeReportType; |
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| 27 | import org.apache.hadoop.fs.FSDataOutputStream; |
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| 28 | import org.apache.hadoop.fs.FileSystem; |
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| 29 | import org.apache.hadoop.fs.Path; |
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| 30 | import org.apache.hadoop.fs.FileStatus; |
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| 31 | import java.text.SimpleDateFormat; |
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| 32 | import java.util.Date; |
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| 33 | |
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| 34 | /** |
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| 35 | * This class tests the access time on files. |
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| 36 | * |
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| 37 | */ |
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| 38 | public class TestSetTimes extends TestCase { |
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| 39 | static final long seed = 0xDEADBEEFL; |
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| 40 | static final int blockSize = 8192; |
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| 41 | static final int fileSize = 16384; |
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| 42 | static final int numDatanodes = 1; |
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| 43 | |
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| 44 | static final SimpleDateFormat dateForm = new SimpleDateFormat("yyyy-MM-dd HH:mm"); |
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| 45 | |
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| 46 | Random myrand = new Random(); |
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| 47 | Path hostsFile; |
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| 48 | Path excludeFile; |
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| 49 | |
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| 50 | private FSDataOutputStream writeFile(FileSystem fileSys, Path name, int repl) |
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| 51 | throws IOException { |
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| 52 | FSDataOutputStream stm = fileSys.create(name, true, |
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| 53 | fileSys.getConf().getInt("io.file.buffer.size", 4096), |
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| 54 | (short)repl, (long)blockSize); |
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| 55 | byte[] buffer = new byte[fileSize]; |
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| 56 | Random rand = new Random(seed); |
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| 57 | rand.nextBytes(buffer); |
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| 58 | stm.write(buffer); |
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| 59 | return stm; |
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| 60 | } |
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| 61 | |
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| 62 | private void cleanupFile(FileSystem fileSys, Path name) throws IOException { |
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| 63 | assertTrue(fileSys.exists(name)); |
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| 64 | fileSys.delete(name, true); |
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| 65 | assertTrue(!fileSys.exists(name)); |
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| 66 | } |
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| 67 | |
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| 68 | private void printDatanodeReport(DatanodeInfo[] info) { |
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| 69 | System.out.println("-------------------------------------------------"); |
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| 70 | for (int i = 0; i < info.length; i++) { |
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| 71 | System.out.println(info[i].getDatanodeReport()); |
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| 72 | System.out.println(); |
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| 73 | } |
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| 74 | } |
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| 75 | |
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| 76 | /** |
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| 77 | * Tests mod & access time in DFS. |
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| 78 | */ |
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| 79 | public void testTimes() throws IOException { |
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| 80 | Configuration conf = new Configuration(); |
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| 81 | final int MAX_IDLE_TIME = 2000; // 2s |
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| 82 | conf.setInt("ipc.client.connection.maxidletime", MAX_IDLE_TIME); |
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| 83 | conf.setInt("heartbeat.recheck.interval", 1000); |
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| 84 | conf.setInt("dfs.heartbeat.interval", 1); |
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| 85 | |
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| 86 | |
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| 87 | MiniDFSCluster cluster = new MiniDFSCluster(conf, numDatanodes, true, null); |
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| 88 | cluster.waitActive(); |
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| 89 | final int nnport = cluster.getNameNodePort(); |
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| 90 | InetSocketAddress addr = new InetSocketAddress("localhost", |
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| 91 | cluster.getNameNodePort()); |
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| 92 | DFSClient client = new DFSClient(addr, conf); |
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| 93 | DatanodeInfo[] info = client.datanodeReport(DatanodeReportType.LIVE); |
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| 94 | assertEquals("Number of Datanodes ", numDatanodes, info.length); |
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| 95 | FileSystem fileSys = cluster.getFileSystem(); |
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| 96 | int replicas = 1; |
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| 97 | assertTrue(fileSys instanceof DistributedFileSystem); |
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| 98 | |
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| 99 | try { |
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| 100 | // |
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| 101 | // create file and record atime/mtime |
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| 102 | // |
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| 103 | System.out.println("Creating testdir1 and testdir1/test1.dat."); |
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| 104 | Path dir1 = new Path("testdir1"); |
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| 105 | Path file1 = new Path(dir1, "test1.dat"); |
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| 106 | FSDataOutputStream stm = writeFile(fileSys, file1, replicas); |
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| 107 | FileStatus stat = fileSys.getFileStatus(file1); |
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| 108 | long atimeBeforeClose = stat.getAccessTime(); |
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| 109 | String adate = dateForm.format(new Date(atimeBeforeClose)); |
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| 110 | System.out.println("atime on " + file1 + " before close is " + |
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| 111 | adate + " (" + atimeBeforeClose + ")"); |
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| 112 | assertTrue(atimeBeforeClose != 0); |
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| 113 | stm.close(); |
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| 114 | |
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| 115 | stat = fileSys.getFileStatus(file1); |
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| 116 | long atime1 = stat.getAccessTime(); |
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| 117 | long mtime1 = stat.getModificationTime(); |
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| 118 | adate = dateForm.format(new Date(atime1)); |
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| 119 | String mdate = dateForm.format(new Date(mtime1)); |
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| 120 | System.out.println("atime on " + file1 + " is " + adate + |
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| 121 | " (" + atime1 + ")"); |
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| 122 | System.out.println("mtime on " + file1 + " is " + mdate + |
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| 123 | " (" + mtime1 + ")"); |
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| 124 | assertTrue(atime1 != 0); |
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| 125 | |
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| 126 | // |
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| 127 | // record dir times |
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| 128 | // |
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| 129 | stat = fileSys.getFileStatus(dir1); |
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| 130 | long mdir1 = stat.getAccessTime(); |
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| 131 | assertTrue(mdir1 == 0); |
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| 132 | |
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| 133 | // set the access time to be one day in the past |
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| 134 | long atime2 = atime1 - (24L * 3600L * 1000L); |
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| 135 | fileSys.setTimes(file1, -1, atime2); |
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| 136 | |
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| 137 | // check new access time on file |
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| 138 | stat = fileSys.getFileStatus(file1); |
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| 139 | long atime3 = stat.getAccessTime(); |
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| 140 | String adate3 = dateForm.format(new Date(atime3)); |
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| 141 | System.out.println("new atime on " + file1 + " is " + |
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| 142 | adate3 + " (" + atime3 + ")"); |
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| 143 | assertTrue(atime2 == atime3); |
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| 144 | assertTrue(mtime1 == stat.getModificationTime()); |
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| 145 | |
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| 146 | // set the modification time to be 1 hour in the past |
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| 147 | long mtime2 = mtime1 - (3600L * 1000L); |
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| 148 | fileSys.setTimes(file1, mtime2, -1); |
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| 149 | |
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| 150 | // check new modification time on file |
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| 151 | stat = fileSys.getFileStatus(file1); |
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| 152 | long mtime3 = stat.getModificationTime(); |
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| 153 | String mdate3 = dateForm.format(new Date(mtime3)); |
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| 154 | System.out.println("new mtime on " + file1 + " is " + |
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| 155 | mdate3 + " (" + mtime3 + ")"); |
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| 156 | assertTrue(atime2 == stat.getAccessTime()); |
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| 157 | assertTrue(mtime2 == mtime3); |
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| 158 | |
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| 159 | // shutdown cluster and restart |
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| 160 | cluster.shutdown(); |
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| 161 | try {Thread.sleep(2*MAX_IDLE_TIME);} catch (InterruptedException e) {} |
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| 162 | cluster = new MiniDFSCluster(nnport, conf, 1, false, true, |
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| 163 | null, null, null); |
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| 164 | cluster.waitActive(); |
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| 165 | fileSys = cluster.getFileSystem(); |
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| 166 | |
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| 167 | // verify that access times and modification times persist after a |
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| 168 | // cluster restart. |
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| 169 | System.out.println("Verifying times after cluster restart"); |
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| 170 | stat = fileSys.getFileStatus(file1); |
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| 171 | assertTrue(atime2 == stat.getAccessTime()); |
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| 172 | assertTrue(mtime3 == stat.getModificationTime()); |
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| 173 | |
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| 174 | cleanupFile(fileSys, file1); |
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| 175 | cleanupFile(fileSys, dir1); |
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| 176 | } catch (IOException e) { |
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| 177 | info = client.datanodeReport(DatanodeReportType.ALL); |
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| 178 | printDatanodeReport(info); |
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| 179 | throw e; |
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| 180 | } finally { |
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| 181 | fileSys.close(); |
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| 182 | cluster.shutdown(); |
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| 183 | } |
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| 184 | } |
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| 185 | |
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| 186 | public static void main(String[] args) throws Exception { |
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| 187 | new TestSetTimes().testTimes(); |
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| 188 | } |
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| 189 | } |
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