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.mapred.join; |
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19 | |
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20 | import java.io.ByteArrayInputStream; |
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21 | import java.io.ByteArrayOutputStream; |
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22 | import java.io.DataInputStream; |
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23 | import java.io.DataOutputStream; |
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24 | |
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25 | import java.util.Arrays; |
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26 | import java.util.Random; |
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27 | |
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28 | import junit.framework.TestCase; |
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29 | |
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30 | import org.apache.hadoop.io.BooleanWritable; |
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31 | import org.apache.hadoop.io.BytesWritable; |
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32 | import org.apache.hadoop.io.FloatWritable; |
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33 | import org.apache.hadoop.io.IntWritable; |
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34 | import org.apache.hadoop.io.LongWritable; |
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35 | import org.apache.hadoop.io.Text; |
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36 | import org.apache.hadoop.io.Writable; |
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37 | |
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38 | public class TestTupleWritable extends TestCase { |
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39 | |
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40 | private TupleWritable makeTuple(Writable[] writs) { |
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41 | Writable[] sub1 = { writs[1], writs[2] }; |
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42 | Writable[] sub3 = { writs[4], writs[5] }; |
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43 | Writable[] sub2 = { writs[3], new TupleWritable(sub3), writs[6] }; |
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44 | Writable[] vals = { writs[0], new TupleWritable(sub1), |
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45 | new TupleWritable(sub2), writs[7], writs[8], |
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46 | writs[9] }; |
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47 | // [v0, [v1, v2], [v3, [v4, v5], v6], v7, v8, v9] |
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48 | TupleWritable ret = new TupleWritable(vals); |
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49 | for (int i = 0; i < 6; ++i) { |
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50 | ret.setWritten(i); |
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51 | } |
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52 | ((TupleWritable)sub2[1]).setWritten(0); |
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53 | ((TupleWritable)sub2[1]).setWritten(1); |
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54 | ((TupleWritable)vals[1]).setWritten(0); |
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55 | ((TupleWritable)vals[1]).setWritten(1); |
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56 | for (int i = 0; i < 3; ++i) { |
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57 | ((TupleWritable)vals[2]).setWritten(i); |
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58 | } |
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59 | return ret; |
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60 | } |
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61 | |
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62 | private int verifIter(Writable[] writs, TupleWritable t, int i) { |
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63 | for (Writable w : t) { |
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64 | if (w instanceof TupleWritable) { |
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65 | i = verifIter(writs, ((TupleWritable)w), i); |
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66 | continue; |
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67 | } |
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68 | assertTrue("Bad value", w.equals(writs[i++])); |
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69 | } |
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70 | return i; |
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71 | } |
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72 | |
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73 | public void testIterable() throws Exception { |
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74 | Random r = new Random(); |
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75 | Writable[] writs = { |
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76 | new BooleanWritable(r.nextBoolean()), |
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77 | new FloatWritable(r.nextFloat()), |
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78 | new FloatWritable(r.nextFloat()), |
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79 | new IntWritable(r.nextInt()), |
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80 | new LongWritable(r.nextLong()), |
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81 | new BytesWritable("dingo".getBytes()), |
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82 | new LongWritable(r.nextLong()), |
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83 | new IntWritable(r.nextInt()), |
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84 | new BytesWritable("yak".getBytes()), |
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85 | new IntWritable(r.nextInt()) |
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86 | }; |
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87 | TupleWritable t = new TupleWritable(writs); |
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88 | for (int i = 0; i < 6; ++i) { |
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89 | t.setWritten(i); |
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90 | } |
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91 | verifIter(writs, t, 0); |
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92 | } |
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93 | |
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94 | public void testNestedIterable() throws Exception { |
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95 | Random r = new Random(); |
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96 | Writable[] writs = { |
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97 | new BooleanWritable(r.nextBoolean()), |
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98 | new FloatWritable(r.nextFloat()), |
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99 | new FloatWritable(r.nextFloat()), |
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100 | new IntWritable(r.nextInt()), |
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101 | new LongWritable(r.nextLong()), |
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102 | new BytesWritable("dingo".getBytes()), |
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103 | new LongWritable(r.nextLong()), |
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104 | new IntWritable(r.nextInt()), |
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105 | new BytesWritable("yak".getBytes()), |
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106 | new IntWritable(r.nextInt()) |
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107 | }; |
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108 | TupleWritable sTuple = makeTuple(writs); |
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109 | assertTrue("Bad count", writs.length == verifIter(writs, sTuple, 0)); |
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110 | } |
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111 | |
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112 | public void testWritable() throws Exception { |
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113 | Random r = new Random(); |
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114 | Writable[] writs = { |
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115 | new BooleanWritable(r.nextBoolean()), |
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116 | new FloatWritable(r.nextFloat()), |
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117 | new FloatWritable(r.nextFloat()), |
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118 | new IntWritable(r.nextInt()), |
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119 | new LongWritable(r.nextLong()), |
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120 | new BytesWritable("dingo".getBytes()), |
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121 | new LongWritable(r.nextLong()), |
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122 | new IntWritable(r.nextInt()), |
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123 | new BytesWritable("yak".getBytes()), |
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124 | new IntWritable(r.nextInt()) |
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125 | }; |
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126 | TupleWritable sTuple = makeTuple(writs); |
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127 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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128 | sTuple.write(new DataOutputStream(out)); |
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129 | ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray()); |
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130 | TupleWritable dTuple = new TupleWritable(); |
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131 | dTuple.readFields(new DataInputStream(in)); |
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132 | assertTrue("Failed to write/read tuple", sTuple.equals(dTuple)); |
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133 | } |
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134 | |
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135 | public void testWideTuple() throws Exception { |
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136 | Text emptyText = new Text("Should be empty"); |
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137 | Writable[] values = new Writable[64]; |
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138 | Arrays.fill(values,emptyText); |
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139 | values[42] = new Text("Number 42"); |
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140 | |
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141 | TupleWritable tuple = new TupleWritable(values); |
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142 | tuple.setWritten(42); |
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143 | |
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144 | for (int pos=0; pos<tuple.size();pos++) { |
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145 | boolean has = tuple.has(pos); |
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146 | if (pos == 42) { |
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147 | assertTrue(has); |
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148 | } |
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149 | else { |
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150 | assertFalse("Tuple position is incorrectly labelled as set: " + pos, has); |
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151 | } |
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152 | } |
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153 | } |
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154 | |
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155 | public void testWideTuple2() throws Exception { |
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156 | Text emptyText = new Text("Should be empty"); |
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157 | Writable[] values = new Writable[64]; |
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158 | Arrays.fill(values,emptyText); |
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159 | values[9] = new Text("Number 9"); |
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160 | |
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161 | TupleWritable tuple = new TupleWritable(values); |
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162 | tuple.setWritten(9); |
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163 | |
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164 | for (int pos=0; pos<tuple.size();pos++) { |
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165 | boolean has = tuple.has(pos); |
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166 | if (pos == 9) { |
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167 | assertTrue(has); |
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168 | } |
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169 | else { |
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170 | assertFalse("Tuple position is incorrectly labelled as set: " + pos, has); |
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171 | } |
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172 | } |
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173 | } |
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174 | } |
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