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.*; |
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22 | import junit.framework.TestCase; |
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23 | |
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24 | import org.apache.hadoop.fs.*; |
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25 | import org.apache.hadoop.io.*; |
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26 | |
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27 | public class TestTextOutputFormat extends TestCase { |
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28 | private static JobConf defaultConf = new JobConf(); |
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29 | |
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30 | private static FileSystem localFs = null; |
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31 | static { |
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32 | try { |
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33 | localFs = FileSystem.getLocal(defaultConf); |
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34 | } catch (IOException e) { |
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35 | throw new RuntimeException("init failure", e); |
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36 | } |
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37 | } |
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38 | // A random task attempt id for testing. |
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39 | private static String attempt = "attempt_200707121733_0001_m_000000_0"; |
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40 | |
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41 | private static Path workDir = |
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42 | new Path(new Path( |
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43 | new Path(System.getProperty("test.build.data", "."), |
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44 | "data"), |
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45 | FileOutputCommitter.TEMP_DIR_NAME), "_" + attempt); |
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46 | |
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47 | @SuppressWarnings("unchecked") |
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48 | public void testFormat() throws Exception { |
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49 | JobConf job = new JobConf(); |
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50 | job.set("mapred.task.id", attempt); |
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51 | FileOutputFormat.setOutputPath(job, workDir.getParent().getParent()); |
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52 | FileOutputFormat.setWorkOutputPath(job, workDir); |
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53 | FileSystem fs = workDir.getFileSystem(job); |
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54 | if (!fs.mkdirs(workDir)) { |
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55 | fail("Failed to create output directory"); |
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56 | } |
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57 | String file = "test.txt"; |
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58 | |
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59 | // A reporter that does nothing |
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60 | Reporter reporter = Reporter.NULL; |
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61 | |
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62 | TextOutputFormat theOutputFormat = new TextOutputFormat(); |
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63 | RecordWriter theRecordWriter = |
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64 | theOutputFormat.getRecordWriter(localFs, job, file, reporter); |
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65 | |
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66 | Text key1 = new Text("key1"); |
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67 | Text key2 = new Text("key2"); |
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68 | Text val1 = new Text("val1"); |
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69 | Text val2 = new Text("val2"); |
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70 | NullWritable nullWritable = NullWritable.get(); |
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71 | |
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72 | try { |
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73 | theRecordWriter.write(key1, val1); |
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74 | theRecordWriter.write(null, nullWritable); |
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75 | theRecordWriter.write(null, val1); |
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76 | theRecordWriter.write(nullWritable, val2); |
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77 | theRecordWriter.write(key2, nullWritable); |
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78 | theRecordWriter.write(key1, null); |
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79 | theRecordWriter.write(null, null); |
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80 | theRecordWriter.write(key2, val2); |
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81 | |
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82 | } finally { |
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83 | theRecordWriter.close(reporter); |
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84 | } |
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85 | File expectedFile = new File(new Path(workDir, file).toString()); |
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86 | StringBuffer expectedOutput = new StringBuffer(); |
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87 | expectedOutput.append(key1).append('\t').append(val1).append("\n"); |
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88 | expectedOutput.append(val1).append("\n"); |
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89 | expectedOutput.append(val2).append("\n"); |
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90 | expectedOutput.append(key2).append("\n"); |
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91 | expectedOutput.append(key1).append("\n"); |
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92 | expectedOutput.append(key2).append('\t').append(val2).append("\n"); |
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93 | String output = UtilsForTests.slurp(expectedFile); |
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94 | assertEquals(output, expectedOutput.toString()); |
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95 | |
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96 | } |
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97 | |
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98 | @SuppressWarnings("unchecked") |
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99 | public void testFormatWithCustomSeparator() throws Exception { |
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100 | JobConf job = new JobConf(); |
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101 | String separator = "\u0001"; |
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102 | job.set("mapred.textoutputformat.separator", separator); |
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103 | job.set("mapred.task.id", attempt); |
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104 | FileOutputFormat.setOutputPath(job, workDir.getParent().getParent()); |
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105 | FileOutputFormat.setWorkOutputPath(job, workDir); |
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106 | FileSystem fs = workDir.getFileSystem(job); |
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107 | if (!fs.mkdirs(workDir)) { |
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108 | fail("Failed to create output directory"); |
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109 | } |
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110 | String file = "test.txt"; |
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111 | |
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112 | // A reporter that does nothing |
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113 | Reporter reporter = Reporter.NULL; |
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114 | |
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115 | TextOutputFormat theOutputFormat = new TextOutputFormat(); |
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116 | RecordWriter theRecordWriter = |
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117 | theOutputFormat.getRecordWriter(localFs, job, file, reporter); |
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118 | |
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119 | Text key1 = new Text("key1"); |
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120 | Text key2 = new Text("key2"); |
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121 | Text val1 = new Text("val1"); |
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122 | Text val2 = new Text("val2"); |
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123 | NullWritable nullWritable = NullWritable.get(); |
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124 | |
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125 | try { |
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126 | theRecordWriter.write(key1, val1); |
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127 | theRecordWriter.write(null, nullWritable); |
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128 | theRecordWriter.write(null, val1); |
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129 | theRecordWriter.write(nullWritable, val2); |
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130 | theRecordWriter.write(key2, nullWritable); |
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131 | theRecordWriter.write(key1, null); |
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132 | theRecordWriter.write(null, null); |
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133 | theRecordWriter.write(key2, val2); |
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134 | |
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135 | } finally { |
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136 | theRecordWriter.close(reporter); |
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137 | } |
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138 | File expectedFile = new File(new Path(workDir, file).toString()); |
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139 | StringBuffer expectedOutput = new StringBuffer(); |
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140 | expectedOutput.append(key1).append(separator).append(val1).append("\n"); |
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141 | expectedOutput.append(val1).append("\n"); |
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142 | expectedOutput.append(val2).append("\n"); |
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143 | expectedOutput.append(key2).append("\n"); |
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144 | expectedOutput.append(key1).append("\n"); |
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145 | expectedOutput.append(key2).append(separator).append(val2).append("\n"); |
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146 | String output = UtilsForTests.slurp(expectedFile); |
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147 | assertEquals(output, expectedOutput.toString()); |
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148 | |
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149 | } |
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150 | |
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151 | public static void main(String[] args) throws Exception { |
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152 | new TestTextOutputFormat().testFormat(); |
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153 | } |
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154 | } |
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