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.fs.loadGenerator; |
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19 | |
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20 | import java.io.BufferedReader; |
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21 | import java.io.File; |
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22 | import java.io.FileReader; |
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23 | import java.io.FileWriter; |
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24 | |
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25 | import org.apache.hadoop.conf.Configuration; |
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26 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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27 | |
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28 | import junit.framework.TestCase; |
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29 | /** |
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30 | * This class tests if a balancer schedules tasks correctly. |
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31 | */ |
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32 | public class TestLoadGenerator extends TestCase { |
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33 | private static final Configuration CONF = new Configuration(); |
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34 | private static final int DEFAULT_BLOCK_SIZE = 10; |
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35 | private static final String OUT_DIR = |
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36 | System.getProperty("test.build.data","build/test/data"); |
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37 | private static final File DIR_STRUCTURE_FILE = |
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38 | new File(OUT_DIR, StructureGenerator.DIR_STRUCTURE_FILE_NAME); |
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39 | private static final File FILE_STRUCTURE_FILE = |
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40 | new File(OUT_DIR, StructureGenerator.FILE_STRUCTURE_FILE_NAME); |
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41 | private static final String DIR_STRUCTURE_FIRST_LINE = "/dir0"; |
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42 | private static final String DIR_STRUCTURE_SECOND_LINE = "/dir1"; |
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43 | private static final String FILE_STRUCTURE_FIRST_LINE = |
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44 | "/dir0/_file_0 0.3754598635933768"; |
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45 | private static final String FILE_STRUCTURE_SECOND_LINE = |
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46 | "/dir1/_file_1 1.4729310851145203"; |
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47 | |
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48 | |
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49 | static { |
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50 | CONF.setLong("dfs.block.size", DEFAULT_BLOCK_SIZE); |
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51 | CONF.setInt("io.bytes.per.checksum", DEFAULT_BLOCK_SIZE); |
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52 | CONF.setLong("dfs.heartbeat.interval", 1L); |
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53 | } |
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54 | |
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55 | /** Test if the structure generator works fine */ |
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56 | public void testStructureGenerator() throws Exception { |
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57 | StructureGenerator sg = new StructureGenerator(); |
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58 | String[] args = new String[]{"-maxDepth", "2", "-minWidth", "1", |
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59 | "-maxWidth", "2", "-numOfFiles", "2", |
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60 | "-avgFileSize", "1", "-outDir", OUT_DIR, "-seed", "1"}; |
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61 | |
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62 | final int MAX_DEPTH = 1; |
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63 | final int MIN_WIDTH = 3; |
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64 | final int MAX_WIDTH = 5; |
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65 | final int NUM_OF_FILES = 7; |
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66 | final int AVG_FILE_SIZE = 9; |
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67 | final int SEED = 13; |
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68 | try { |
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69 | // successful case |
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70 | assertEquals(0, sg.run(args)); |
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71 | BufferedReader in = new BufferedReader(new FileReader(DIR_STRUCTURE_FILE)); |
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72 | assertEquals(DIR_STRUCTURE_FIRST_LINE, in.readLine()); |
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73 | assertEquals(DIR_STRUCTURE_SECOND_LINE, in.readLine()); |
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74 | assertEquals(null, in.readLine()); |
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75 | in.close(); |
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76 | |
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77 | in = new BufferedReader(new FileReader(FILE_STRUCTURE_FILE)); |
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78 | assertEquals(FILE_STRUCTURE_FIRST_LINE, in.readLine()); |
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79 | assertEquals(FILE_STRUCTURE_SECOND_LINE, in.readLine()); |
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80 | assertEquals(null, in.readLine()); |
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81 | in.close(); |
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82 | |
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83 | String oldArg = args[MAX_DEPTH]; |
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84 | args[MAX_DEPTH] = "0"; |
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85 | assertEquals(-1, sg.run(args)); |
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86 | args[MAX_DEPTH] = oldArg; |
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87 | |
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88 | oldArg = args[MIN_WIDTH]; |
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89 | args[MIN_WIDTH] = "-1"; |
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90 | assertEquals(-1, sg.run(args)); |
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91 | args[MIN_WIDTH] = oldArg; |
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92 | |
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93 | oldArg = args[MAX_WIDTH]; |
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94 | args[MAX_WIDTH] = "-1"; |
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95 | assertEquals(-1, sg.run(args)); |
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96 | args[MAX_WIDTH] = oldArg; |
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97 | |
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98 | oldArg = args[NUM_OF_FILES]; |
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99 | args[NUM_OF_FILES] = "-1"; |
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100 | assertEquals(-1, sg.run(args)); |
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101 | args[NUM_OF_FILES] = oldArg; |
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102 | |
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103 | oldArg = args[NUM_OF_FILES]; |
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104 | args[NUM_OF_FILES] = "-1"; |
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105 | assertEquals(-1, sg.run(args)); |
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106 | args[NUM_OF_FILES] = oldArg; |
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107 | |
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108 | oldArg = args[AVG_FILE_SIZE]; |
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109 | args[AVG_FILE_SIZE] = "-1"; |
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110 | assertEquals(-1, sg.run(args)); |
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111 | args[AVG_FILE_SIZE] = oldArg; |
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112 | |
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113 | oldArg = args[SEED]; |
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114 | args[SEED] = "34.d4"; |
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115 | assertEquals(-1, sg.run(args)); |
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116 | args[SEED] = oldArg; |
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117 | } finally { |
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118 | DIR_STRUCTURE_FILE.delete(); |
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119 | FILE_STRUCTURE_FILE.delete(); |
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120 | } |
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121 | } |
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122 | |
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123 | /** Test if the load generator works fine */ |
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124 | public void testLoadGenerator() throws Exception { |
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125 | final String TEST_SPACE_ROOT = "/test"; |
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126 | |
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127 | FileWriter writer = new FileWriter(DIR_STRUCTURE_FILE); |
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128 | writer.write(DIR_STRUCTURE_FIRST_LINE+"\n"); |
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129 | writer.write(DIR_STRUCTURE_SECOND_LINE+"\n"); |
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130 | writer.close(); |
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131 | |
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132 | writer = new FileWriter(FILE_STRUCTURE_FILE); |
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133 | writer.write(FILE_STRUCTURE_FIRST_LINE+"\n"); |
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134 | writer.write(FILE_STRUCTURE_SECOND_LINE+"\n"); |
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135 | writer.close(); |
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136 | |
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137 | MiniDFSCluster cluster = new MiniDFSCluster(CONF, 3, true, null); |
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138 | cluster.waitActive(); |
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139 | |
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140 | try { |
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141 | DataGenerator dg = new DataGenerator(); |
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142 | dg.setConf(CONF); |
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143 | String [] args = new String[] {"-inDir", OUT_DIR, "-root", TEST_SPACE_ROOT}; |
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144 | assertEquals(0, dg.run(args)); |
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145 | |
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146 | final int READ_PROBABILITY = 1; |
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147 | final int WRITE_PROBABILITY = 3; |
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148 | final int MAX_DELAY_BETWEEN_OPS = 7; |
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149 | final int NUM_OF_THREADS = 9; |
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150 | final int START_TIME = 11; |
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151 | final int ELAPSED_TIME = 13; |
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152 | |
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153 | LoadGenerator lg = new LoadGenerator(); |
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154 | lg.setConf(CONF); |
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155 | args = new String[] {"-readProbability", "0.3", "-writeProbability", "0.3", |
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156 | "-root", TEST_SPACE_ROOT, "-maxDelayBetweenOps", "0", |
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157 | "-numOfThreads", "1", "-startTime", |
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158 | Long.toString(System.currentTimeMillis()), "-elapsedTime", "10"}; |
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159 | |
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160 | assertEquals(0, lg.run(args)); |
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161 | |
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162 | String oldArg = args[READ_PROBABILITY]; |
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163 | args[READ_PROBABILITY] = "1.1"; |
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164 | assertEquals(-1, lg.run(args)); |
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165 | args[READ_PROBABILITY] = "-1.1"; |
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166 | assertEquals(-1, lg.run(args)); |
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167 | args[READ_PROBABILITY] = oldArg; |
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168 | |
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169 | oldArg = args[WRITE_PROBABILITY]; |
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170 | args[WRITE_PROBABILITY] = "1.1"; |
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171 | assertEquals(-1, lg.run(args)); |
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172 | args[WRITE_PROBABILITY] = "-1.1"; |
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173 | assertEquals(-1, lg.run(args)); |
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174 | args[WRITE_PROBABILITY] = "0.9"; |
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175 | assertEquals(-1, lg.run(args)); |
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176 | args[READ_PROBABILITY] = oldArg; |
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177 | |
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178 | oldArg = args[MAX_DELAY_BETWEEN_OPS]; |
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179 | args[MAX_DELAY_BETWEEN_OPS] = "1.x1"; |
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180 | assertEquals(-1, lg.run(args)); |
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181 | args[MAX_DELAY_BETWEEN_OPS] = oldArg; |
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182 | |
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183 | oldArg = args[MAX_DELAY_BETWEEN_OPS]; |
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184 | args[MAX_DELAY_BETWEEN_OPS] = "1.x1"; |
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185 | assertEquals(-1, lg.run(args)); |
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186 | args[MAX_DELAY_BETWEEN_OPS] = oldArg; |
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187 | |
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188 | oldArg = args[NUM_OF_THREADS]; |
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189 | args[NUM_OF_THREADS] = "-1"; |
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190 | assertEquals(-1, lg.run(args)); |
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191 | args[NUM_OF_THREADS] = oldArg; |
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192 | |
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193 | oldArg = args[START_TIME]; |
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194 | args[START_TIME] = "-1"; |
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195 | assertEquals(-1, lg.run(args)); |
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196 | args[START_TIME] = oldArg; |
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197 | |
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198 | oldArg = args[ELAPSED_TIME]; |
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199 | args[ELAPSED_TIME] = "-1"; |
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200 | assertEquals(-1, lg.run(args)); |
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201 | args[ELAPSED_TIME] = oldArg; |
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202 | } finally { |
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203 | cluster.shutdown(); |
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204 | DIR_STRUCTURE_FILE.delete(); |
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205 | FILE_STRUCTURE_FILE.delete(); |
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206 | } |
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207 | } |
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208 | |
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209 | /** |
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210 | * @param args |
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211 | */ |
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212 | public static void main(String[] args) throws Exception { |
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213 | TestLoadGenerator loadGeneratorTest = new TestLoadGenerator(); |
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214 | loadGeneratorTest.testStructureGenerator(); |
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215 | loadGeneratorTest.testLoadGenerator(); |
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216 | } |
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217 | } |
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