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.io.IOException; |
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22 | import junit.framework.TestCase; |
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23 | |
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24 | import org.apache.hadoop.fs.FSDataOutputStream; |
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25 | import org.apache.hadoop.fs.FileSystem; |
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26 | import org.apache.hadoop.fs.Path; |
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27 | import org.apache.hadoop.mapred.JobHistory.JobInfo; |
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28 | import org.apache.hadoop.mapred.JobHistory.RecordTypes; |
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29 | |
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30 | /** |
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31 | * Tests the JobHistory parser with different versions of job history files. |
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32 | * This may have to change when new versions of job history files come up. |
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33 | */ |
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34 | public class TestJobHistoryVersion extends TestCase { |
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35 | private static final String HOSTNAME = "localhost"; |
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36 | private static final String TIME= "1234567890123"; |
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37 | private static final String USER = "user"; |
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38 | private static final String JOBNAME = "job"; |
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39 | private static final String JOB = "job_200809180000_0001"; |
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40 | private static final String FILENAME = |
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41 | HOSTNAME + "_" + TIME + "_" + JOB + "_" + USER + "_" + JOBNAME; |
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42 | private static final String TASK_ID = "tip_200809180000_0001_0"; |
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43 | private static final String TASK_ATTEMPT_ID = |
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44 | "attempt_200809180000_0001_0_1234567890123"; |
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45 | private static final String COUNTERS = |
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46 | "Job Counters.Launched map tasks:1," |
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47 | + "Map-Reduce Framework.Map input records:0," |
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48 | + "Map-Reduce Framework.Map input bytes:0," |
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49 | + "File Systems.HDFS bytes written:0,"; |
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50 | private static final Path TEST_DIR = |
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51 | new Path(System.getProperty("test.build.data", "/tmp"), |
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52 | "test-history-version"); |
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53 | private static final String DELIM = "."; |
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54 | |
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55 | /** |
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56 | * Creates a job history file of a given specific version. This method should |
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57 | * change if format/content of future versions of job history file changes. |
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58 | */ |
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59 | private void writeHistoryFile(FSDataOutputStream out, long version) |
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60 | throws IOException { |
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61 | String delim = "\n"; // '\n' for version 0 |
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62 | String counters = COUNTERS; |
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63 | String jobConf = "job.xml"; |
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64 | if (version > 0) { // line delimeter should be '.' for later versions |
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65 | // Change the delimiter |
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66 | delim = DELIM + delim; |
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67 | |
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68 | // Write the version line |
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69 | out.writeBytes(RecordTypes.Meta.name() + " VERSION=\"" |
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70 | + JobHistory.VERSION + "\" " + delim); |
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71 | jobConf = JobHistory.escapeString(jobConf); |
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72 | counters = JobHistory.escapeString(counters); |
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73 | } |
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74 | |
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75 | // Write the job-start line |
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76 | |
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77 | |
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78 | out.writeBytes("Job JOBID=\"" + JOB + "\" JOBNAME=\"" + JOBNAME + "\"" |
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79 | + " USER=\"" + USER + "\" SUBMIT_TIME=\"" + TIME + "\"" |
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80 | + " JOBCONF=\"" + jobConf + "\" " + delim); |
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81 | |
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82 | // Write the job-launch line |
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83 | out.writeBytes("Job JOBID=\"" + JOB + "\" LAUNCH_TIME=\"" + TIME + "\"" |
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84 | + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\" " + delim); |
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85 | |
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86 | // Write the task start line |
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87 | out.writeBytes("Task TASKID=\"" + TASK_ID + "\" TASK_TYPE=\"MAP\"" |
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88 | + " START_TIME=\"" + TIME + "\" SPLITS=\"\"" |
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89 | + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\" " + delim); |
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90 | |
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91 | // Write the attempt start line |
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92 | out.writeBytes("MapAttempt TASK_TYPE=\"MAP\" TASKID=\"" + TASK_ID + "\"" |
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93 | + " TASK_ATTEMPT_ID=\"" + TASK_ATTEMPT_ID + "\"" |
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94 | + " START_TIME=\"" + TIME + "\"" |
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95 | + " HOSTNAME=\"" + HOSTNAME + "\" " + delim); |
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96 | |
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97 | // Write the attempt finish line |
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98 | out.writeBytes("MapAttempt TASK_TYPE=\"MAP\" TASKID=\"" + TASK_ID + "\"" |
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99 | + " TASK_ATTEMPT_ID=\"" + TASK_ATTEMPT_ID + "\"" |
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100 | + " FINISH_TIME=\"" + TIME + "\"" |
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101 | + " TASK_STATUS=\"SUCCESS\"" |
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102 | + " HOSTNAME=\"" + HOSTNAME + "\" " + delim); |
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103 | |
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104 | // Write the task finish line |
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105 | out.writeBytes("Task TASKID=\"" + TASK_ID + "\" TASK_TYPE=\"MAP\"" |
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106 | + " TASK_STATUS=\"SUCCESS\"" |
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107 | + " FINISH_TIME=\"" + TIME + "\"" |
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108 | + " COUNTERS=\"" + counters + "\" " + delim); |
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109 | |
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110 | // Write the job-finish line |
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111 | out.writeBytes("Job JOBID=\"" + JOB + "\" FINISH_TIME=\"" + TIME + "\"" |
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112 | + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\"" |
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113 | + " JOB_STATUS=\"SUCCESS\" FINISHED_MAPS=\"1\"" |
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114 | + " FINISHED_REDUCES=\"0\" FAILED_MAPS=\"0\"" |
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115 | + " FAILED_REDUCES=\"0\"" |
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116 | + " COUNTERS=\"" + counters + "\" " + delim); |
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117 | |
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118 | } |
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119 | |
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120 | /** |
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121 | * Tests the JobHistory parser with different versions of job history files |
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122 | */ |
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123 | public void testJobHistoryVersion() throws IOException { |
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124 | // If new job history version comes up, the modified parser may fail for |
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125 | // the history file created by writeHistoryFile(). |
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126 | for (long version = 0; version <= JobHistory.VERSION; version++) { |
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127 | JobConf conf = new JobConf(); |
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128 | FileSystem fs = FileSystem.getLocal(conf); |
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129 | |
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130 | // cleanup |
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131 | fs.delete(TEST_DIR, true); |
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132 | |
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133 | Path historyPath = new Path(TEST_DIR + "/_logs/history/" + |
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134 | FILENAME + version); |
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135 | |
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136 | fs.delete(historyPath, false); |
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137 | |
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138 | FSDataOutputStream out = fs.create(historyPath); |
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139 | writeHistoryFile(out, version); |
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140 | out.close(); |
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141 | |
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142 | JobInfo job = new JobHistory.JobInfo(JOB); |
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143 | DefaultJobHistoryParser.parseJobTasks(historyPath.toString(), job, fs); |
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144 | |
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145 | assertTrue("Failed to parse jobhistory files of version " + version, |
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146 | job.getAllTasks().size() > 0); |
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147 | |
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148 | // cleanup |
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149 | fs.delete(TEST_DIR, true); |
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150 | } |
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151 | } |
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152 | } |
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