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 | |
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19 | package org.apache.hadoop.mapred; |
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20 | |
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21 | import java.util.ArrayList; |
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22 | import java.io.File; |
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23 | import java.io.IOException; |
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24 | import java.util.List; |
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25 | |
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26 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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27 | import org.apache.hadoop.fs.Path; |
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28 | import org.apache.hadoop.fs.FileSystem; |
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29 | import org.apache.hadoop.mapred.JobStatusChangeEvent.EventType; |
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30 | import org.apache.commons.logging.Log; |
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31 | import org.apache.commons.logging.LogFactory; |
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32 | |
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33 | import junit.framework.TestCase; |
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34 | |
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35 | /** |
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36 | * Test whether the JobInProgressListeners are informed as expected. |
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37 | */ |
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38 | public class TestJobInProgressListener extends TestCase { |
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39 | private static final Log LOG = |
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40 | LogFactory.getLog(TestJobInProgressListener.class); |
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41 | private final Path testDir = new Path("test-jip-listener-update"); |
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42 | |
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43 | private static String TEST_ROOT_DIR = new File(System.getProperty( |
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44 | "test.build.data", "/tmp")).toURI().toString().replace(' ', '+'); |
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45 | |
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46 | private JobConf configureJob(JobConf conf, int m, int r, |
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47 | Path inDir, Path outputDir, |
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48 | String mapSignalFile, String redSignalFile) |
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49 | throws IOException { |
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50 | UtilsForTests.configureWaitingJobConf(conf, inDir, outputDir, m, r, |
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51 | "job-listener-test", mapSignalFile, redSignalFile); |
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52 | return conf; |
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53 | } |
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54 | |
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55 | /** |
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56 | * This test case tests if external updates to JIP do not result into |
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57 | * undesirable effects |
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58 | * Test is as follows |
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59 | * - submit 2 jobs of normal priority. job1 is a waiting job which waits and |
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60 | * blocks the cluster |
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61 | * - change one parameter of job2 such that the job bumps up in the queue |
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62 | * - check if the queue looks ok |
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63 | * |
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64 | */ |
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65 | public void testJobQueueChanges() throws IOException { |
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66 | LOG.info("Testing job queue changes"); |
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67 | JobConf conf = new JobConf(); |
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68 | MiniDFSCluster dfs = new MiniDFSCluster(conf, 1, true, null, null); |
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69 | dfs.waitActive(); |
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70 | FileSystem fileSys = dfs.getFileSystem(); |
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71 | |
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72 | dfs.startDataNodes(conf, 1, true, null, null, null, null); |
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73 | dfs.waitActive(); |
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74 | |
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75 | String namenode = (dfs.getFileSystem()).getUri().getHost() + ":" |
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76 | + (dfs.getFileSystem()).getUri().getPort(); |
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77 | MiniMRCluster mr = new MiniMRCluster(1, namenode, 1); |
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78 | JobClient jobClient = new JobClient(mr.createJobConf()); |
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79 | |
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80 | // clean up |
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81 | fileSys.delete(testDir, true); |
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82 | |
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83 | if (!fileSys.mkdirs(testDir)) { |
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84 | throw new IOException("Mkdirs failed to create " + testDir.toString()); |
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85 | } |
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86 | |
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87 | // Write the input file |
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88 | Path inDir = new Path(testDir, "input"); |
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89 | Path shareDir = new Path(testDir, "share"); |
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90 | String mapSignalFile = UtilsForTests.getMapSignalFile(shareDir); |
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91 | String redSignalFile = UtilsForTests.getReduceSignalFile(shareDir); |
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92 | UtilsForTests.writeFile(dfs.getNameNode(), conf, new Path(inDir + "/file"), |
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93 | (short)1); |
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94 | |
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95 | JobQueueJobInProgressListener myListener = |
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96 | new JobQueueJobInProgressListener(); |
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97 | |
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98 | // add the listener |
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99 | mr.getJobTrackerRunner().getJobTracker() |
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100 | .addJobInProgressListener(myListener); |
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101 | |
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102 | // big blocking job |
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103 | Path outputDir = new Path(testDir, "output"); |
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104 | Path newOutputDir = outputDir.suffix("0"); |
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105 | JobConf job1 = configureJob(mr.createJobConf(), 10, 0, inDir, newOutputDir, |
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106 | mapSignalFile, redSignalFile); |
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107 | |
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108 | // short blocked job |
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109 | newOutputDir = outputDir.suffix("1"); |
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110 | JobConf job2 = configureJob(mr.createJobConf(), 1, 0, inDir, newOutputDir, |
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111 | mapSignalFile, redSignalFile); |
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112 | |
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113 | RunningJob rJob1 = jobClient.submitJob(job1); |
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114 | LOG.info("Running job " + rJob1.getID().toString()); |
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115 | |
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116 | RunningJob rJob2 = jobClient.submitJob(job2); |
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117 | LOG.info("Running job " + rJob2.getID().toString()); |
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118 | |
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119 | // I. Check job-priority change |
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120 | LOG.info("Testing job priority changes"); |
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121 | |
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122 | // bump up job2's priority |
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123 | LOG.info("Increasing job2's priority to HIGH"); |
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124 | rJob2.setJobPriority("HIGH"); |
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125 | |
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126 | // check if the queue is sane |
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127 | assertTrue("Priority change garbles the queue", |
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128 | myListener.getJobQueue().size() == 2); |
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129 | |
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130 | JobInProgress[] queue = |
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131 | myListener.getJobQueue().toArray(new JobInProgress[0]); |
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132 | |
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133 | // check if the bump has happened |
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134 | assertTrue("Priority change failed to bump up job2 in the queue", |
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135 | queue[0].getJobID().equals(rJob2.getID())); |
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136 | |
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137 | assertTrue("Priority change failed to bump down job1 in the queue", |
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138 | queue[1].getJobID().equals(rJob1.getID())); |
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139 | |
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140 | assertEquals("Priority change has garbled the queue", |
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141 | 2, queue.length); |
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142 | |
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143 | // II. Check start-time change |
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144 | LOG.info("Testing job start-time changes"); |
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145 | |
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146 | // reset the priority which will make the order as |
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147 | // - job1 |
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148 | // - job2 |
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149 | // this will help in bumping job2 on start-time change |
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150 | LOG.info("Increasing job2's priority to NORMAL"); |
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151 | rJob2.setJobPriority("NORMAL"); |
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152 | |
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153 | // create the change event |
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154 | JobInProgress jip2 = mr.getJobTrackerRunner().getJobTracker() |
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155 | .getJob(rJob2.getID()); |
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156 | JobInProgress jip1 = mr.getJobTrackerRunner().getJobTracker() |
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157 | .getJob(rJob1.getID()); |
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158 | |
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159 | JobStatus prevStatus = (JobStatus)jip2.getStatus().clone(); |
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160 | |
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161 | // change job2's start-time and the status |
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162 | jip2.startTime = jip1.startTime - 1; |
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163 | jip2.status.setStartTime(jip2.startTime); |
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164 | |
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165 | |
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166 | JobStatus newStatus = (JobStatus)jip2.getStatus().clone(); |
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167 | |
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168 | // inform the listener |
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169 | LOG.info("Updating the listener about job2's start-time change"); |
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170 | JobStatusChangeEvent event = |
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171 | new JobStatusChangeEvent(jip2, EventType.START_TIME_CHANGED, |
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172 | prevStatus, newStatus); |
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173 | myListener.jobUpdated(event); |
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174 | |
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175 | // check if the queue is sane |
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176 | assertTrue("Start time change garbles the queue", |
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177 | myListener.getJobQueue().size() == 2); |
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178 | |
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179 | queue = myListener.getJobQueue().toArray(new JobInProgress[0]); |
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180 | |
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181 | // check if the bump has happened |
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182 | assertTrue("Start time change failed to bump up job2 in the queue", |
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183 | queue[0].getJobID().equals(rJob2.getID())); |
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184 | |
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185 | assertTrue("Start time change failed to bump down job1 in the queue", |
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186 | queue[1].getJobID().equals(rJob1.getID())); |
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187 | |
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188 | assertEquals("Start time change has garbled the queue", |
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189 | 2, queue.length); |
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190 | |
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191 | // signal the maps to complete |
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192 | UtilsForTests.signalTasks(dfs, fileSys, true, mapSignalFile, redSignalFile); |
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193 | |
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194 | // check if job completion leaves the queue sane |
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195 | while (rJob2.getJobState() != JobStatus.SUCCEEDED) { |
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196 | UtilsForTests.waitFor(10); |
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197 | } |
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198 | |
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199 | while (rJob1.getJobState() != JobStatus.SUCCEEDED) { |
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200 | UtilsForTests.waitFor(10); |
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201 | } |
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202 | |
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203 | assertTrue("Job completion garbles the queue", |
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204 | myListener.getJobQueue().size() == 0); |
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205 | } |
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206 | |
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207 | // A listener that inits the tasks one at a time and also listens to the |
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208 | // events |
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209 | public static class MyListener extends JobInProgressListener { |
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210 | private List<JobInProgress> wjobs = new ArrayList<JobInProgress>(); |
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211 | private List<JobInProgress> jobs = new ArrayList<JobInProgress>(); |
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212 | |
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213 | public boolean contains (JobID id) { |
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214 | return contains(id, true) || contains(id, false); |
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215 | } |
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216 | |
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217 | public boolean contains (JobID id, boolean waiting) { |
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218 | List<JobInProgress> queue = waiting ? wjobs : jobs; |
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219 | for (JobInProgress job : queue) { |
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220 | if (job.getJobID().equals(id)) { |
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221 | return true; |
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222 | } |
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223 | } |
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224 | return false; |
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225 | } |
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226 | |
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227 | public void jobAdded(JobInProgress job) { |
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228 | LOG.info("Job " + job.getJobID().toString() + " added"); |
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229 | wjobs.add(job); |
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230 | } |
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231 | |
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232 | public void jobRemoved(JobInProgress job) { |
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233 | LOG.info("Job " + job.getJobID().toString() + " removed"); |
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234 | } |
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235 | |
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236 | public void jobUpdated(JobChangeEvent event) { |
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237 | LOG.info("Job " + event.getJobInProgress().getJobID().toString() + " updated"); |
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238 | // remove the job is the event is for a completed job |
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239 | if (event instanceof JobStatusChangeEvent) { |
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240 | JobStatusChangeEvent statusEvent = (JobStatusChangeEvent)event; |
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241 | if (statusEvent.getEventType() == EventType.RUN_STATE_CHANGED) { |
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242 | // check if the state changes from |
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243 | // RUNNING->COMPLETE(SUCCESS/KILLED/FAILED) |
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244 | JobInProgress jip = event.getJobInProgress(); |
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245 | String jobId = jip.getJobID().toString(); |
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246 | if (jip.isComplete()) { |
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247 | LOG.info("Job " + jobId + " deleted from the running queue"); |
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248 | if (statusEvent.getOldStatus().getRunState() == JobStatus.PREP) { |
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249 | wjobs.remove(jip); |
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250 | } else { |
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251 | jobs.remove(jip); |
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252 | } |
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253 | } else { |
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254 | // PREP->RUNNING |
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255 | LOG.info("Job " + jobId + " deleted from the waiting queue"); |
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256 | wjobs.remove(jip); |
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257 | jobs.add(jip); |
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258 | } |
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259 | } |
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260 | } |
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261 | } |
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262 | } |
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263 | |
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264 | public void testJobFailure() throws Exception { |
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265 | LOG.info("Testing job-success"); |
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266 | |
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267 | MyListener myListener = new MyListener(); |
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268 | MiniMRCluster mr = new MiniMRCluster(1, "file:///", 1); |
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269 | |
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270 | JobConf job = mr.createJobConf(); |
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271 | |
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272 | mr.getJobTrackerRunner().getJobTracker() |
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273 | .addJobInProgressListener(myListener); |
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274 | |
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275 | Path inDir = new Path(TEST_ROOT_DIR + "/jiplistenerfailjob/input"); |
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276 | Path outDir = new Path(TEST_ROOT_DIR + "/jiplistenerfailjob/output"); |
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277 | |
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278 | // submit a job that fails |
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279 | RunningJob rJob = UtilsForTests.runJobFail(job, inDir, outDir); |
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280 | JobID id = rJob.getID(); |
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281 | |
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282 | // check if the job failure was notified |
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283 | assertFalse("Missing event notification on failing a running job", |
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284 | myListener.contains(id)); |
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285 | |
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286 | } |
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287 | |
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288 | public void testJobKill() throws Exception { |
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289 | LOG.info("Testing job-kill"); |
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290 | |
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291 | MyListener myListener = new MyListener(); |
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292 | MiniMRCluster mr = new MiniMRCluster(1, "file:///", 1); |
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293 | |
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294 | JobConf job = mr.createJobConf(); |
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295 | |
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296 | mr.getJobTrackerRunner().getJobTracker() |
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297 | .addJobInProgressListener(myListener); |
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298 | |
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299 | Path inDir = new Path(TEST_ROOT_DIR + "/jiplistenerkilljob/input"); |
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300 | Path outDir = new Path(TEST_ROOT_DIR + "/jiplistenerkilljob/output"); |
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301 | |
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302 | // submit and kill the job |
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303 | RunningJob rJob = UtilsForTests.runJobKill(job, inDir, outDir); |
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304 | JobID id = rJob.getID(); |
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305 | |
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306 | // check if the job failure was notified |
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307 | assertFalse("Missing event notification on killing a running job", |
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308 | myListener.contains(id)); |
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309 | |
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310 | } |
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311 | |
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312 | public void testJobSuccess() throws Exception { |
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313 | LOG.info("Testing job-success"); |
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314 | MyListener myListener = new MyListener(); |
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315 | |
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316 | MiniMRCluster mr = new MiniMRCluster(1, "file:///", 1); |
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317 | |
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318 | JobConf job = mr.createJobConf(); |
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319 | |
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320 | mr.getJobTrackerRunner().getJobTracker() |
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321 | .addJobInProgressListener(myListener); |
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322 | |
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323 | Path inDir = new Path(TEST_ROOT_DIR + "/jiplistenerjob/input"); |
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324 | Path outDir = new Path(TEST_ROOT_DIR + "/jiplistenerjob/output"); |
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325 | |
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326 | // submit the job |
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327 | RunningJob rJob = UtilsForTests.runJob(job, inDir, outDir); |
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328 | |
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329 | // wait for the job to be running |
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330 | while (rJob.getJobState() != JobStatus.RUNNING) { |
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331 | UtilsForTests.waitFor(10); |
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332 | } |
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333 | |
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334 | LOG.info("Job " + rJob.getID().toString() + " started running"); |
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335 | |
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336 | // check if the listener was updated about this change |
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337 | assertFalse("Missing event notification for a running job", |
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338 | myListener.contains(rJob.getID(), true)); |
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339 | |
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340 | while (rJob.getJobState() != JobStatus.SUCCEEDED) { |
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341 | UtilsForTests.waitFor(10); |
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342 | } |
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343 | |
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344 | // check if the job success was notified |
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345 | assertFalse("Missing event notification for a successful job", |
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346 | myListener.contains(rJob.getID(), false)); |
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347 | } |
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348 | |
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349 | /** |
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350 | * This scheduler never schedules any task as it doesnt init any task. So all |
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351 | * the jobs are queued forever. |
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352 | */ |
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353 | public static class MyScheduler extends JobQueueTaskScheduler { |
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354 | |
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355 | @Override |
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356 | public synchronized void start() throws IOException { |
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357 | super.start(); |
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358 | // Remove the eager task initializer |
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359 | taskTrackerManager.removeJobInProgressListener( |
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360 | eagerTaskInitializationListener); |
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361 | // terminate it |
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362 | eagerTaskInitializationListener.terminate(); |
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363 | } |
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364 | } |
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365 | |
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366 | public void testQueuedJobKill() throws Exception { |
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367 | LOG.info("Testing queued-job-kill"); |
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368 | |
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369 | MyListener myListener = new MyListener(); |
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370 | |
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371 | JobConf job = new JobConf(); |
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372 | job.setClass("mapred.jobtracker.taskScheduler", MyScheduler.class, |
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373 | TaskScheduler.class); |
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374 | MiniMRCluster mr = new MiniMRCluster(1, "file:///", 1, null, null, job); |
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375 | |
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376 | job = mr.createJobConf(); |
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377 | |
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378 | mr.getJobTrackerRunner().getJobTracker() |
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379 | .addJobInProgressListener(myListener); |
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380 | |
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381 | Path inDir = new Path(TEST_ROOT_DIR + "/jiplistenerjob/input"); |
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382 | Path outDir = new Path(TEST_ROOT_DIR + "/jiplistenerjob/output"); |
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383 | |
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384 | RunningJob rJob = UtilsForTests.runJob(job, inDir, outDir); |
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385 | JobID id = rJob.getID(); |
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386 | LOG.info("Job : " + id.toString() + " submitted"); |
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387 | |
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388 | // check if the job is in the waiting queue |
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389 | assertTrue("Missing event notification on submiting a job", |
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390 | myListener.contains(id, true)); |
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391 | |
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392 | // kill the job |
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393 | LOG.info("Killing job : " + id.toString()); |
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394 | rJob.killJob(); |
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395 | |
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396 | // check if the job is killed |
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397 | assertEquals("Job status doesnt reflect the kill-job action", |
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398 | JobStatus.KILLED, rJob.getJobState()); |
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399 | |
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400 | // check if the job is correctly moved |
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401 | // from the waiting list |
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402 | assertFalse("Missing event notification on killing a waiting job", |
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403 | myListener.contains(id, true)); |
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404 | } |
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405 | } |
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