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 java.io.File; |
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21 | import java.io.FileInputStream; |
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22 | import java.io.FileOutputStream; |
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23 | import java.io.IOException; |
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24 | import java.io.InputStream; |
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25 | import java.io.OutputStream; |
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26 | |
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27 | import org.apache.commons.logging.Log; |
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28 | import org.apache.commons.logging.LogFactory; |
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29 | import org.apache.commons.logging.impl.Log4JLogger; |
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30 | import org.apache.hadoop.conf.Configuration; |
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31 | import org.apache.hadoop.conf.Configured; |
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32 | import org.apache.hadoop.fs.ChecksumFileSystem; |
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33 | import org.apache.hadoop.fs.FileSystem; |
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34 | import org.apache.hadoop.fs.LocalDirAllocator; |
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35 | import org.apache.hadoop.fs.Path; |
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36 | import org.apache.hadoop.util.Tool; |
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37 | import org.apache.hadoop.util.ToolRunner; |
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38 | |
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39 | import org.apache.log4j.Level; |
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40 | |
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41 | /** |
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42 | * This class benchmarks the performance of the local file system, raw local |
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43 | * file system and HDFS at reading and writing files. The user should invoke |
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44 | * the main of this class and optionally include a repetition count. |
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45 | */ |
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46 | public class BenchmarkThroughput extends Configured implements Tool { |
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47 | |
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48 | // the property in the config that specifies a working directory |
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49 | private LocalDirAllocator dir; |
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50 | private long startTime; |
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51 | // the size of the buffer to use |
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52 | private int BUFFER_SIZE; |
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53 | |
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54 | private void resetMeasurements() { |
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55 | startTime = System.currentTimeMillis(); |
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56 | } |
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57 | |
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58 | private void printMeasurements() { |
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59 | System.out.println(" time: " + |
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60 | ((System.currentTimeMillis() - startTime)/1000)); |
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61 | } |
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62 | |
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63 | private Path writeLocalFile(String name, Configuration conf, |
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64 | long total) throws IOException { |
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65 | Path path = dir.getLocalPathForWrite(name, total, conf); |
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66 | System.out.print("Writing " + name); |
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67 | resetMeasurements(); |
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68 | OutputStream out = new FileOutputStream(new File(path.toString())); |
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69 | byte[] data = new byte[BUFFER_SIZE]; |
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70 | for(long size=0; size < total; size += BUFFER_SIZE) { |
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71 | out.write(data); |
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72 | } |
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73 | out.close(); |
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74 | printMeasurements(); |
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75 | return path; |
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76 | } |
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77 | |
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78 | private void readLocalFile(Path path, |
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79 | String name, |
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80 | Configuration conf) throws IOException { |
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81 | System.out.print("Reading " + name); |
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82 | resetMeasurements(); |
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83 | InputStream in = new FileInputStream(new File(path.toString())); |
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84 | byte[] data = new byte[BUFFER_SIZE]; |
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85 | long size = 0; |
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86 | while (size >= 0) { |
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87 | size = in.read(data); |
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88 | } |
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89 | in.close(); |
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90 | printMeasurements(); |
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91 | } |
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92 | |
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93 | private void writeAndReadLocalFile(String name, |
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94 | Configuration conf, |
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95 | long size |
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96 | ) throws IOException { |
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97 | Path f = null; |
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98 | try { |
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99 | f = writeLocalFile(name, conf, size); |
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100 | readLocalFile(f, name, conf); |
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101 | } finally { |
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102 | if (f != null) { |
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103 | new File(f.toString()).delete(); |
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104 | } |
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105 | } |
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106 | } |
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107 | |
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108 | private Path writeFile(FileSystem fs, |
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109 | String name, |
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110 | Configuration conf, |
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111 | long total |
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112 | ) throws IOException { |
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113 | Path f = dir.getLocalPathForWrite(name, total, conf); |
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114 | System.out.print("Writing " + name); |
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115 | resetMeasurements(); |
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116 | OutputStream out = fs.create(f); |
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117 | byte[] data = new byte[BUFFER_SIZE]; |
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118 | for(long size = 0; size < total; size += BUFFER_SIZE) { |
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119 | out.write(data); |
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120 | } |
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121 | out.close(); |
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122 | printMeasurements(); |
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123 | return f; |
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124 | } |
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125 | |
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126 | private void readFile(FileSystem fs, |
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127 | Path f, |
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128 | String name, |
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129 | Configuration conf |
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130 | ) throws IOException { |
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131 | System.out.print("Reading " + name); |
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132 | resetMeasurements(); |
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133 | InputStream in = fs.open(f); |
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134 | byte[] data = new byte[BUFFER_SIZE]; |
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135 | long val = 0; |
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136 | while (val >= 0) { |
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137 | val = in.read(data); |
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138 | } |
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139 | in.close(); |
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140 | printMeasurements(); |
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141 | } |
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142 | |
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143 | private void writeAndReadFile(FileSystem fs, |
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144 | String name, |
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145 | Configuration conf, |
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146 | long size |
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147 | ) throws IOException { |
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148 | Path f = null; |
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149 | try { |
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150 | f = writeFile(fs, name, conf, size); |
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151 | readFile(fs, f, name, conf); |
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152 | } finally { |
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153 | try { |
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154 | if (f != null) { |
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155 | fs.delete(f, true); |
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156 | } |
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157 | } catch (IOException ie) { |
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158 | // IGNORE |
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159 | } |
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160 | } |
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161 | } |
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162 | |
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163 | private static void printUsage() { |
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164 | ToolRunner.printGenericCommandUsage(System.err); |
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165 | System.err.println("Usage: dfsthroughput [#reps]"); |
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166 | System.err.println("Config properties:\n" + |
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167 | " dfsthroughput.file.size:\tsize of each write/read (10GB)\n" + |
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168 | " dfsthroughput.buffer.size:\tbuffer size for write/read (4k)\n"); |
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169 | } |
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170 | |
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171 | public int run(String[] args) throws IOException { |
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172 | // silence the minidfs cluster |
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173 | Log hadoopLog = LogFactory.getLog("org"); |
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174 | if (hadoopLog instanceof Log4JLogger) { |
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175 | ((Log4JLogger) hadoopLog).getLogger().setLevel(Level.WARN); |
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176 | } |
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177 | int reps = 1; |
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178 | if (args.length == 1) { |
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179 | try { |
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180 | reps = Integer.parseInt(args[0]); |
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181 | } catch (NumberFormatException e) { |
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182 | printUsage(); |
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183 | return -1; |
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184 | } |
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185 | } else if (args.length > 1) { |
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186 | printUsage(); |
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187 | return -1; |
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188 | } |
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189 | Configuration conf = getConf(); |
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190 | // the size of the file to write |
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191 | long SIZE = conf.getLong("dfsthroughput.file.size", |
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192 | 10L * 1024 * 1024 * 1024); |
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193 | BUFFER_SIZE = conf.getInt("dfsthroughput.buffer.size", 4 * 1024); |
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194 | |
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195 | String localDir = conf.get("mapred.temp.dir"); |
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196 | dir = new LocalDirAllocator("mapred.temp.dir"); |
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197 | |
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198 | System.setProperty("test.build.data", localDir); |
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199 | System.out.println("Local = " + localDir); |
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200 | ChecksumFileSystem checkedLocal = FileSystem.getLocal(conf); |
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201 | FileSystem rawLocal = checkedLocal.getRawFileSystem(); |
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202 | for(int i=0; i < reps; ++i) { |
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203 | writeAndReadLocalFile("local", conf, SIZE); |
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204 | writeAndReadFile(rawLocal, "raw", conf, SIZE); |
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205 | writeAndReadFile(checkedLocal, "checked", conf, SIZE); |
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206 | } |
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207 | MiniDFSCluster cluster = null; |
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208 | try { |
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209 | cluster = new MiniDFSCluster(conf, 1, true, new String[]{"/foo"}); |
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210 | cluster.waitActive(); |
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211 | FileSystem dfs = cluster.getFileSystem(); |
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212 | for(int i=0; i < reps; ++i) { |
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213 | writeAndReadFile(dfs, "dfs", conf, SIZE); |
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214 | } |
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215 | } finally { |
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216 | if (cluster != null) { |
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217 | cluster.shutdown(); |
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218 | // clean up minidfs junk |
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219 | rawLocal.delete(new Path(localDir, "dfs"), true); |
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220 | } |
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221 | } |
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222 | return 0; |
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223 | } |
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224 | |
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225 | /** |
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226 | * @param args |
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227 | */ |
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228 | public static void main(String[] args) throws Exception { |
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229 | int res = ToolRunner.run(new Configuration(), |
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230 | new BenchmarkThroughput(), args); |
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231 | System.exit(res); |
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232 | } |
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233 | |
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234 | } |
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