1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with this |
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4 | * work for additional information regarding copyright ownership. The ASF |
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5 | * licenses this file to you under the Apache License, Version 2.0 (the |
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6 | * "License"); you may not use this file except in compliance with the License. |
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7 | * You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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14 | * License for the specific language governing permissions and limitations under |
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15 | * the License. |
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16 | */ |
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17 | |
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18 | package org.apache.hadoop.io.file.tfile; |
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19 | |
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20 | import java.io.DataInputStream; |
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21 | import java.io.DataOutputStream; |
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22 | import java.io.EOFException; |
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23 | import java.io.IOException; |
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24 | import java.util.Random; |
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25 | |
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26 | import junit.framework.Assert; |
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27 | import junit.framework.TestCase; |
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28 | |
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29 | import org.apache.hadoop.conf.Configuration; |
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30 | import org.apache.hadoop.fs.FSDataOutputStream; |
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31 | import org.apache.hadoop.fs.FileSystem; |
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32 | import org.apache.hadoop.fs.Path; |
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33 | import org.apache.hadoop.io.WritableUtils; |
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34 | import org.apache.hadoop.io.file.tfile.TFile.Reader; |
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35 | import org.apache.hadoop.io.file.tfile.TFile.Writer; |
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36 | import org.apache.hadoop.io.file.tfile.TFile.Reader.Location; |
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37 | import org.apache.hadoop.io.file.tfile.TFile.Reader.Scanner; |
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38 | |
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39 | /** |
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40 | * |
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41 | * Byte arrays test case class using GZ compression codec, base class of none |
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42 | * and LZO compression classes. |
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43 | * |
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44 | */ |
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45 | public class TestTFileByteArrays extends TestCase { |
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46 | private static String ROOT = |
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47 | System.getProperty("test.build.data", "/tmp/tfile-test"); |
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48 | private final static int BLOCK_SIZE = 512; |
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49 | private final static int BUF_SIZE = 64; |
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50 | private final static int K = 1024; |
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51 | protected boolean skip = false; |
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52 | |
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53 | private static final String KEY = "key"; |
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54 | private static final String VALUE = "value"; |
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55 | |
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56 | private FileSystem fs; |
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57 | private Configuration conf; |
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58 | private Path path; |
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59 | private FSDataOutputStream out; |
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60 | private Writer writer; |
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61 | |
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62 | private String compression = Compression.Algorithm.GZ.getName(); |
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63 | private String comparator = "memcmp"; |
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64 | private String outputFile = "TFileTestByteArrays"; |
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65 | /* |
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66 | * pre-sampled numbers of records in one block, based on the given the |
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67 | * generated key and value strings |
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68 | */ |
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69 | // private int records1stBlock = 4314; |
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70 | // private int records2ndBlock = 4108; |
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71 | private int records1stBlock = 4480; |
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72 | private int records2ndBlock = 4263; |
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73 | |
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74 | public void init(String compression, String comparator, String outputFile, |
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75 | int numRecords1stBlock, int numRecords2ndBlock) { |
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76 | this.compression = compression; |
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77 | this.comparator = comparator; |
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78 | this.outputFile = outputFile; |
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79 | this.records1stBlock = numRecords1stBlock; |
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80 | this.records2ndBlock = numRecords2ndBlock; |
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81 | } |
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82 | |
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83 | @Override |
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84 | public void setUp() throws IOException { |
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85 | conf = new Configuration(); |
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86 | path = new Path(ROOT, outputFile); |
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87 | fs = path.getFileSystem(conf); |
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88 | out = fs.create(path); |
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89 | writer = new Writer(out, BLOCK_SIZE, compression, comparator, conf); |
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90 | } |
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91 | |
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92 | @Override |
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93 | public void tearDown() throws IOException { |
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94 | if (!skip) |
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95 | fs.delete(path, true); |
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96 | } |
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97 | |
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98 | public void testNoDataEntry() throws IOException { |
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99 | if (skip) |
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100 | return; |
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101 | closeOutput(); |
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102 | |
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103 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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104 | Assert.assertTrue(reader.isSorted()); |
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105 | Scanner scanner = reader.createScanner(); |
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106 | Assert.assertTrue(scanner.atEnd()); |
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107 | scanner.close(); |
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108 | reader.close(); |
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109 | } |
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110 | |
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111 | public void testOneDataEntry() throws IOException { |
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112 | if (skip) |
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113 | return; |
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114 | writeRecords(1); |
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115 | readRecords(1); |
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116 | |
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117 | checkBlockIndex(1, 0, 0); |
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118 | readValueBeforeKey(1, 0); |
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119 | readKeyWithoutValue(1, 0); |
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120 | readValueWithoutKey(1, 0); |
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121 | readKeyManyTimes(1, 0); |
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122 | } |
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123 | |
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124 | public void testTwoDataEntries() throws IOException { |
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125 | if (skip) |
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126 | return; |
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127 | writeRecords(2); |
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128 | readRecords(2); |
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129 | } |
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130 | |
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131 | /** |
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132 | * Fill up exactly one block. |
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133 | * |
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134 | * @throws IOException |
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135 | */ |
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136 | public void testOneBlock() throws IOException { |
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137 | if (skip) |
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138 | return; |
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139 | // just under one block |
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140 | writeRecords(records1stBlock); |
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141 | readRecords(records1stBlock); |
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142 | // last key should be in the first block (block 0) |
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143 | checkBlockIndex(records1stBlock, records1stBlock - 1, 0); |
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144 | } |
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145 | |
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146 | /** |
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147 | * One block plus one record. |
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148 | * |
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149 | * @throws IOException |
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150 | */ |
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151 | public void testOneBlockPlusOneEntry() throws IOException { |
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152 | if (skip) |
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153 | return; |
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154 | writeRecords(records1stBlock + 1); |
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155 | readRecords(records1stBlock + 1); |
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156 | checkBlockIndex(records1stBlock + 1, records1stBlock - 1, 0); |
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157 | checkBlockIndex(records1stBlock + 1, records1stBlock, 1); |
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158 | } |
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159 | |
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160 | public void testTwoBlocks() throws IOException { |
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161 | if (skip) |
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162 | return; |
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163 | writeRecords(records1stBlock + 5); |
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164 | readRecords(records1stBlock + 5); |
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165 | checkBlockIndex(records1stBlock + 5, records1stBlock + 4, 1); |
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166 | } |
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167 | |
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168 | public void testThreeBlocks() throws IOException { |
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169 | if (skip) |
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170 | return; |
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171 | writeRecords(2 * records1stBlock + 5); |
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172 | readRecords(2 * records1stBlock + 5); |
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173 | |
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174 | checkBlockIndex(2 * records1stBlock + 5, 2 * records1stBlock + 4, 2); |
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175 | // 1st key in file |
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176 | readValueBeforeKey(2 * records1stBlock + 5, 0); |
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177 | readKeyWithoutValue(2 * records1stBlock + 5, 0); |
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178 | readValueWithoutKey(2 * records1stBlock + 5, 0); |
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179 | readKeyManyTimes(2 * records1stBlock + 5, 0); |
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180 | // last key in file |
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181 | readValueBeforeKey(2 * records1stBlock + 5, 2 * records1stBlock + 4); |
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182 | readKeyWithoutValue(2 * records1stBlock + 5, 2 * records1stBlock + 4); |
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183 | readValueWithoutKey(2 * records1stBlock + 5, 2 * records1stBlock + 4); |
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184 | readKeyManyTimes(2 * records1stBlock + 5, 2 * records1stBlock + 4); |
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185 | |
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186 | // 1st key in mid block, verify block indexes then read |
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187 | checkBlockIndex(2 * records1stBlock + 5, records1stBlock - 1, 0); |
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188 | checkBlockIndex(2 * records1stBlock + 5, records1stBlock, 1); |
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189 | readValueBeforeKey(2 * records1stBlock + 5, records1stBlock); |
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190 | readKeyWithoutValue(2 * records1stBlock + 5, records1stBlock); |
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191 | readValueWithoutKey(2 * records1stBlock + 5, records1stBlock); |
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192 | readKeyManyTimes(2 * records1stBlock + 5, records1stBlock); |
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193 | |
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194 | // last key in mid block, verify block indexes then read |
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195 | checkBlockIndex(2 * records1stBlock + 5, records1stBlock + records2ndBlock |
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196 | - 1, 1); |
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197 | checkBlockIndex(2 * records1stBlock + 5, records1stBlock + records2ndBlock, |
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198 | 2); |
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199 | readValueBeforeKey(2 * records1stBlock + 5, records1stBlock |
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200 | + records2ndBlock - 1); |
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201 | readKeyWithoutValue(2 * records1stBlock + 5, records1stBlock |
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202 | + records2ndBlock - 1); |
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203 | readValueWithoutKey(2 * records1stBlock + 5, records1stBlock |
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204 | + records2ndBlock - 1); |
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205 | readKeyManyTimes(2 * records1stBlock + 5, records1stBlock + records2ndBlock |
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206 | - 1); |
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207 | |
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208 | // mid in mid block |
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209 | readValueBeforeKey(2 * records1stBlock + 5, records1stBlock + 10); |
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210 | readKeyWithoutValue(2 * records1stBlock + 5, records1stBlock + 10); |
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211 | readValueWithoutKey(2 * records1stBlock + 5, records1stBlock + 10); |
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212 | readKeyManyTimes(2 * records1stBlock + 5, records1stBlock + 10); |
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213 | } |
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214 | |
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215 | Location locate(Scanner scanner, byte[] key) throws IOException { |
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216 | if (scanner.seekTo(key) == true) { |
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217 | return scanner.currentLocation; |
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218 | } |
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219 | return scanner.endLocation; |
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220 | } |
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221 | |
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222 | public void testLocate() throws IOException { |
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223 | if (skip) |
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224 | return; |
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225 | writeRecords(3 * records1stBlock); |
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226 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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227 | Scanner scanner = reader.createScanner(); |
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228 | Location loc2 = |
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229 | locate(scanner, composeSortedKey(KEY, 3 * records1stBlock, 2) |
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230 | .getBytes()); |
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231 | Location locLastIn1stBlock = |
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232 | locate(scanner, composeSortedKey(KEY, 3 * records1stBlock, |
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233 | records1stBlock - 1).getBytes()); |
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234 | Location locFirstIn2ndBlock = |
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235 | locate(scanner, composeSortedKey(KEY, 3 * records1stBlock, |
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236 | records1stBlock).getBytes()); |
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237 | Location locX = locate(scanner, "keyX".getBytes()); |
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238 | Assert.assertEquals(scanner.endLocation, locX); |
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239 | scanner.close(); |
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240 | reader.close(); |
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241 | } |
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242 | |
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243 | public void testFailureWriterNotClosed() throws IOException { |
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244 | if (skip) |
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245 | return; |
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246 | Reader reader = null; |
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247 | try { |
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248 | reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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249 | Assert.fail("Cannot read before closing the writer."); |
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250 | } |
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251 | catch (IOException e) { |
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252 | // noop, expecting exceptions |
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253 | } |
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254 | finally { |
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255 | if (reader != null) { |
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256 | reader.close(); |
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257 | } |
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258 | } |
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259 | } |
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260 | |
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261 | public void testFailureWriteMetaBlocksWithSameName() throws IOException { |
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262 | if (skip) |
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263 | return; |
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264 | writer.append("keyX".getBytes(), "valueX".getBytes()); |
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265 | |
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266 | // create a new metablock |
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267 | DataOutputStream outMeta = |
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268 | writer.prepareMetaBlock("testX", Compression.Algorithm.GZ.getName()); |
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269 | outMeta.write(123); |
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270 | outMeta.write("foo".getBytes()); |
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271 | outMeta.close(); |
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272 | // add the same metablock |
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273 | try { |
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274 | DataOutputStream outMeta2 = |
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275 | writer.prepareMetaBlock("testX", Compression.Algorithm.GZ.getName()); |
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276 | Assert.fail("Cannot create metablocks with the same name."); |
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277 | } |
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278 | catch (Exception e) { |
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279 | // noop, expecting exceptions |
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280 | } |
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281 | closeOutput(); |
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282 | } |
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283 | |
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284 | public void testFailureGetNonExistentMetaBlock() throws IOException { |
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285 | if (skip) |
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286 | return; |
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287 | writer.append("keyX".getBytes(), "valueX".getBytes()); |
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288 | |
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289 | // create a new metablock |
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290 | DataOutputStream outMeta = |
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291 | writer.prepareMetaBlock("testX", Compression.Algorithm.GZ.getName()); |
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292 | outMeta.write(123); |
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293 | outMeta.write("foo".getBytes()); |
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294 | outMeta.close(); |
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295 | closeOutput(); |
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296 | |
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297 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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298 | DataInputStream mb = reader.getMetaBlock("testX"); |
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299 | Assert.assertNotNull(mb); |
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300 | mb.close(); |
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301 | try { |
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302 | DataInputStream mbBad = reader.getMetaBlock("testY"); |
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303 | Assert.assertNull(mbBad); |
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304 | Assert.fail("Error on handling non-existent metablocks."); |
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305 | } |
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306 | catch (Exception e) { |
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307 | // noop, expecting exceptions |
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308 | } |
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309 | reader.close(); |
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310 | } |
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311 | |
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312 | public void testFailureWriteRecordAfterMetaBlock() throws IOException { |
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313 | if (skip) |
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314 | return; |
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315 | // write a key/value first |
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316 | writer.append("keyX".getBytes(), "valueX".getBytes()); |
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317 | // create a new metablock |
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318 | DataOutputStream outMeta = |
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319 | writer.prepareMetaBlock("testX", Compression.Algorithm.GZ.getName()); |
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320 | outMeta.write(123); |
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321 | outMeta.write("dummy".getBytes()); |
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322 | outMeta.close(); |
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323 | // add more key/value |
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324 | try { |
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325 | writer.append("keyY".getBytes(), "valueY".getBytes()); |
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326 | Assert.fail("Cannot add key/value after start adding meta blocks."); |
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327 | } |
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328 | catch (Exception e) { |
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329 | // noop, expecting exceptions |
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330 | } |
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331 | closeOutput(); |
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332 | } |
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333 | |
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334 | public void testFailureReadValueManyTimes() throws IOException { |
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335 | if (skip) |
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336 | return; |
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337 | writeRecords(5); |
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338 | |
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339 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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340 | Scanner scanner = reader.createScanner(); |
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341 | |
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342 | byte[] vbuf = new byte[BUF_SIZE]; |
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343 | int vlen = scanner.entry().getValueLength(); |
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344 | scanner.entry().getValue(vbuf); |
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345 | Assert.assertEquals(new String(vbuf, 0, vlen), VALUE + 0); |
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346 | try { |
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347 | scanner.entry().getValue(vbuf); |
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348 | Assert.fail("Cannot get the value mlutiple times."); |
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349 | } |
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350 | catch (Exception e) { |
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351 | // noop, expecting exceptions |
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352 | } |
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353 | |
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354 | scanner.close(); |
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355 | reader.close(); |
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356 | } |
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357 | |
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358 | public void testFailureBadCompressionCodec() throws IOException { |
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359 | if (skip) |
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360 | return; |
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361 | closeOutput(); |
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362 | out = fs.create(path); |
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363 | try { |
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364 | writer = new Writer(out, BLOCK_SIZE, "BAD", comparator, conf); |
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365 | Assert.fail("Error on handling invalid compression codecs."); |
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366 | } |
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367 | catch (Exception e) { |
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368 | // noop, expecting exceptions |
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369 | // e.printStackTrace(); |
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370 | } |
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371 | } |
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372 | |
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373 | public void testFailureOpenEmptyFile() throws IOException { |
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374 | if (skip) |
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375 | return; |
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376 | closeOutput(); |
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377 | // create an absolutely empty file |
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378 | path = new Path(fs.getWorkingDirectory(), outputFile); |
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379 | out = fs.create(path); |
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380 | out.close(); |
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381 | try { |
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382 | Reader reader = |
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383 | new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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384 | Assert.fail("Error on handling empty files."); |
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385 | } |
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386 | catch (EOFException e) { |
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387 | // noop, expecting exceptions |
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388 | } |
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389 | } |
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390 | |
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391 | public void testFailureOpenRandomFile() throws IOException { |
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392 | if (skip) |
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393 | return; |
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394 | closeOutput(); |
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395 | // create an random file |
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396 | path = new Path(fs.getWorkingDirectory(), outputFile); |
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397 | out = fs.create(path); |
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398 | Random rand = new Random(); |
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399 | byte[] buf = new byte[K]; |
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400 | // fill with > 1MB data |
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401 | for (int nx = 0; nx < K + 2; nx++) { |
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402 | rand.nextBytes(buf); |
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403 | out.write(buf); |
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404 | } |
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405 | out.close(); |
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406 | try { |
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407 | Reader reader = |
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408 | new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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409 | Assert.fail("Error on handling random files."); |
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410 | } |
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411 | catch (IOException e) { |
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412 | // noop, expecting exceptions |
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413 | } |
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414 | } |
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415 | |
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416 | public void testFailureKeyLongerThan64K() throws IOException { |
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417 | if (skip) |
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418 | return; |
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419 | byte[] buf = new byte[64 * K + 1]; |
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420 | Random rand = new Random(); |
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421 | rand.nextBytes(buf); |
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422 | try { |
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423 | writer.append(buf, "valueX".getBytes()); |
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424 | } |
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425 | catch (IndexOutOfBoundsException e) { |
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426 | // noop, expecting exceptions |
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427 | } |
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428 | closeOutput(); |
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429 | } |
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430 | |
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431 | public void testFailureOutOfOrderKeys() throws IOException { |
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432 | if (skip) |
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433 | return; |
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434 | try { |
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435 | writer.append("keyM".getBytes(), "valueM".getBytes()); |
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436 | writer.append("keyA".getBytes(), "valueA".getBytes()); |
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437 | Assert.fail("Error on handling out of order keys."); |
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438 | } |
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439 | catch (Exception e) { |
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440 | // noop, expecting exceptions |
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441 | // e.printStackTrace(); |
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442 | } |
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443 | |
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444 | closeOutput(); |
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445 | } |
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446 | |
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447 | public void testFailureNegativeOffset() throws IOException { |
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448 | if (skip) |
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449 | return; |
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450 | try { |
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451 | writer.append("keyX".getBytes(), -1, 4, "valueX".getBytes(), 0, 6); |
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452 | Assert.fail("Error on handling negative offset."); |
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453 | } |
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454 | catch (Exception e) { |
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455 | // noop, expecting exceptions |
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456 | } |
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457 | closeOutput(); |
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458 | } |
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459 | |
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460 | public void testFailureNegativeOffset_2() throws IOException { |
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461 | if (skip) |
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462 | return; |
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463 | closeOutput(); |
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464 | |
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465 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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466 | Scanner scanner = reader.createScanner(); |
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467 | try { |
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468 | scanner.lowerBound("keyX".getBytes(), -1, 4); |
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469 | Assert.fail("Error on handling negative offset."); |
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470 | } |
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471 | catch (Exception e) { |
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472 | // noop, expecting exceptions |
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473 | } |
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474 | finally { |
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475 | reader.close(); |
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476 | scanner.close(); |
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477 | } |
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478 | closeOutput(); |
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479 | } |
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480 | |
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481 | public void testFailureNegativeLength() throws IOException { |
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482 | if (skip) |
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483 | return; |
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484 | try { |
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485 | writer.append("keyX".getBytes(), 0, -1, "valueX".getBytes(), 0, 6); |
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486 | Assert.fail("Error on handling negative length."); |
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487 | } |
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488 | catch (Exception e) { |
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489 | // noop, expecting exceptions |
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490 | } |
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491 | closeOutput(); |
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492 | } |
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493 | |
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494 | public void testFailureNegativeLength_2() throws IOException { |
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495 | if (skip) |
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496 | return; |
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497 | closeOutput(); |
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498 | |
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499 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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500 | Scanner scanner = reader.createScanner(); |
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501 | try { |
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502 | scanner.lowerBound("keyX".getBytes(), 0, -1); |
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503 | Assert.fail("Error on handling negative length."); |
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504 | } |
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505 | catch (Exception e) { |
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506 | // noop, expecting exceptions |
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507 | } |
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508 | finally { |
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509 | scanner.close(); |
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510 | reader.close(); |
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511 | } |
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512 | closeOutput(); |
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513 | } |
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514 | |
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515 | public void testFailureNegativeLength_3() throws IOException { |
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516 | if (skip) |
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517 | return; |
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518 | writeRecords(3); |
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519 | |
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520 | Reader reader = |
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521 | new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
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522 | Scanner scanner = reader.createScanner(); |
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523 | try { |
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524 | // test negative array offset |
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525 | try { |
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526 | scanner.seekTo("keyY".getBytes(), -1, 4); |
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527 | Assert.fail("Failed to handle negative offset."); |
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528 | } catch (Exception e) { |
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529 | // noop, expecting exceptions |
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530 | } |
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531 | |
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532 | // test negative array length |
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533 | try { |
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534 | scanner.seekTo("keyY".getBytes(), 0, -2); |
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535 | Assert.fail("Failed to handle negative key length."); |
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536 | } catch (Exception e) { |
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537 | // noop, expecting exceptions |
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538 | } |
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539 | } finally { |
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540 | reader.close(); |
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541 | scanner.close(); |
---|
542 | } |
---|
543 | } |
---|
544 | |
---|
545 | public void testFailureCompressionNotWorking() throws IOException { |
---|
546 | if (skip) |
---|
547 | return; |
---|
548 | long rawDataSize = writeRecords(10 * records1stBlock, false); |
---|
549 | if (!compression.equalsIgnoreCase(Compression.Algorithm.NONE.getName())) { |
---|
550 | Assert.assertTrue(out.getPos() < rawDataSize); |
---|
551 | } |
---|
552 | closeOutput(); |
---|
553 | } |
---|
554 | |
---|
555 | public void testFailureFileWriteNotAt0Position() throws IOException { |
---|
556 | if (skip) |
---|
557 | return; |
---|
558 | closeOutput(); |
---|
559 | out = fs.create(path); |
---|
560 | out.write(123); |
---|
561 | |
---|
562 | try { |
---|
563 | writer = new Writer(out, BLOCK_SIZE, compression, comparator, conf); |
---|
564 | Assert.fail("Failed to catch file write not at position 0."); |
---|
565 | } |
---|
566 | catch (Exception e) { |
---|
567 | // noop, expecting exceptions |
---|
568 | } |
---|
569 | closeOutput(); |
---|
570 | } |
---|
571 | |
---|
572 | private long writeRecords(int count) throws IOException { |
---|
573 | return writeRecords(count, true); |
---|
574 | } |
---|
575 | |
---|
576 | private long writeRecords(int count, boolean close) throws IOException { |
---|
577 | long rawDataSize = writeRecords(writer, count); |
---|
578 | if (close) { |
---|
579 | closeOutput(); |
---|
580 | } |
---|
581 | return rawDataSize; |
---|
582 | } |
---|
583 | |
---|
584 | static long writeRecords(Writer writer, int count) throws IOException { |
---|
585 | long rawDataSize = 0; |
---|
586 | int nx; |
---|
587 | for (nx = 0; nx < count; nx++) { |
---|
588 | byte[] key = composeSortedKey(KEY, count, nx).getBytes(); |
---|
589 | byte[] value = (VALUE + nx).getBytes(); |
---|
590 | writer.append(key, value); |
---|
591 | rawDataSize += |
---|
592 | WritableUtils.getVIntSize(key.length) + key.length |
---|
593 | + WritableUtils.getVIntSize(value.length) + value.length; |
---|
594 | } |
---|
595 | return rawDataSize; |
---|
596 | } |
---|
597 | |
---|
598 | /** |
---|
599 | * Insert some leading 0's in front of the value, to make the keys sorted. |
---|
600 | * |
---|
601 | * @param prefix |
---|
602 | * @param total |
---|
603 | * @param value |
---|
604 | * @return |
---|
605 | */ |
---|
606 | static String composeSortedKey(String prefix, int total, int value) { |
---|
607 | return String.format("%s%010d", prefix, value); |
---|
608 | } |
---|
609 | |
---|
610 | /** |
---|
611 | * Calculate how many digits are in the 10-based integer. |
---|
612 | * |
---|
613 | * @param value |
---|
614 | * @return |
---|
615 | */ |
---|
616 | private static int numberDigits(int value) { |
---|
617 | int digits = 0; |
---|
618 | while ((value = value / 10) > 0) { |
---|
619 | digits++; |
---|
620 | } |
---|
621 | return digits; |
---|
622 | } |
---|
623 | |
---|
624 | private void readRecords(int count) throws IOException { |
---|
625 | readRecords(fs, path, count, conf); |
---|
626 | } |
---|
627 | |
---|
628 | static void readRecords(FileSystem fs, Path path, int count, |
---|
629 | Configuration conf) throws IOException { |
---|
630 | Reader reader = |
---|
631 | new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
632 | Scanner scanner = reader.createScanner(); |
---|
633 | |
---|
634 | try { |
---|
635 | for (int nx = 0; nx < count; nx++, scanner.advance()) { |
---|
636 | Assert.assertFalse(scanner.atEnd()); |
---|
637 | // Assert.assertTrue(scanner.next()); |
---|
638 | |
---|
639 | byte[] kbuf = new byte[BUF_SIZE]; |
---|
640 | int klen = scanner.entry().getKeyLength(); |
---|
641 | scanner.entry().getKey(kbuf); |
---|
642 | Assert.assertEquals(new String(kbuf, 0, klen), composeSortedKey(KEY, |
---|
643 | count, nx)); |
---|
644 | |
---|
645 | byte[] vbuf = new byte[BUF_SIZE]; |
---|
646 | int vlen = scanner.entry().getValueLength(); |
---|
647 | scanner.entry().getValue(vbuf); |
---|
648 | Assert.assertEquals(new String(vbuf, 0, vlen), VALUE + nx); |
---|
649 | } |
---|
650 | |
---|
651 | Assert.assertTrue(scanner.atEnd()); |
---|
652 | Assert.assertFalse(scanner.advance()); |
---|
653 | } |
---|
654 | finally { |
---|
655 | scanner.close(); |
---|
656 | reader.close(); |
---|
657 | } |
---|
658 | } |
---|
659 | |
---|
660 | private void checkBlockIndex(int count, int recordIndex, |
---|
661 | int blockIndexExpected) throws IOException { |
---|
662 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
663 | Scanner scanner = reader.createScanner(); |
---|
664 | scanner.seekTo(composeSortedKey(KEY, count, recordIndex).getBytes()); |
---|
665 | Assert.assertEquals(blockIndexExpected, scanner.currentLocation |
---|
666 | .getBlockIndex()); |
---|
667 | scanner.close(); |
---|
668 | reader.close(); |
---|
669 | } |
---|
670 | |
---|
671 | private void readValueBeforeKey(int count, int recordIndex) |
---|
672 | throws IOException { |
---|
673 | Reader reader = |
---|
674 | new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
675 | Scanner scanner = |
---|
676 | reader.createScanner(composeSortedKey(KEY, count, recordIndex) |
---|
677 | .getBytes(), null); |
---|
678 | |
---|
679 | try { |
---|
680 | byte[] vbuf = new byte[BUF_SIZE]; |
---|
681 | int vlen = scanner.entry().getValueLength(); |
---|
682 | scanner.entry().getValue(vbuf); |
---|
683 | Assert.assertEquals(new String(vbuf, 0, vlen), VALUE + recordIndex); |
---|
684 | |
---|
685 | byte[] kbuf = new byte[BUF_SIZE]; |
---|
686 | int klen = scanner.entry().getKeyLength(); |
---|
687 | scanner.entry().getKey(kbuf); |
---|
688 | Assert.assertEquals(new String(kbuf, 0, klen), composeSortedKey(KEY, |
---|
689 | count, recordIndex)); |
---|
690 | } |
---|
691 | finally { |
---|
692 | scanner.close(); |
---|
693 | reader.close(); |
---|
694 | } |
---|
695 | } |
---|
696 | |
---|
697 | private void readKeyWithoutValue(int count, int recordIndex) |
---|
698 | throws IOException { |
---|
699 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
700 | Scanner scanner = |
---|
701 | reader.createScanner(composeSortedKey(KEY, count, recordIndex) |
---|
702 | .getBytes(), null); |
---|
703 | |
---|
704 | try { |
---|
705 | // read the indexed key |
---|
706 | byte[] kbuf1 = new byte[BUF_SIZE]; |
---|
707 | int klen1 = scanner.entry().getKeyLength(); |
---|
708 | scanner.entry().getKey(kbuf1); |
---|
709 | Assert.assertEquals(new String(kbuf1, 0, klen1), composeSortedKey(KEY, |
---|
710 | count, recordIndex)); |
---|
711 | |
---|
712 | if (scanner.advance() && !scanner.atEnd()) { |
---|
713 | // read the next key following the indexed |
---|
714 | byte[] kbuf2 = new byte[BUF_SIZE]; |
---|
715 | int klen2 = scanner.entry().getKeyLength(); |
---|
716 | scanner.entry().getKey(kbuf2); |
---|
717 | Assert.assertEquals(new String(kbuf2, 0, klen2), composeSortedKey(KEY, |
---|
718 | count, recordIndex + 1)); |
---|
719 | } |
---|
720 | } |
---|
721 | finally { |
---|
722 | scanner.close(); |
---|
723 | reader.close(); |
---|
724 | } |
---|
725 | } |
---|
726 | |
---|
727 | private void readValueWithoutKey(int count, int recordIndex) |
---|
728 | throws IOException { |
---|
729 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
730 | |
---|
731 | Scanner scanner = |
---|
732 | reader.createScanner(composeSortedKey(KEY, count, recordIndex) |
---|
733 | .getBytes(), null); |
---|
734 | |
---|
735 | byte[] vbuf1 = new byte[BUF_SIZE]; |
---|
736 | int vlen1 = scanner.entry().getValueLength(); |
---|
737 | scanner.entry().getValue(vbuf1); |
---|
738 | Assert.assertEquals(new String(vbuf1, 0, vlen1), VALUE + recordIndex); |
---|
739 | |
---|
740 | if (scanner.advance() && !scanner.atEnd()) { |
---|
741 | byte[] vbuf2 = new byte[BUF_SIZE]; |
---|
742 | int vlen2 = scanner.entry().getValueLength(); |
---|
743 | scanner.entry().getValue(vbuf2); |
---|
744 | Assert.assertEquals(new String(vbuf2, 0, vlen2), VALUE |
---|
745 | + (recordIndex + 1)); |
---|
746 | } |
---|
747 | |
---|
748 | scanner.close(); |
---|
749 | reader.close(); |
---|
750 | } |
---|
751 | |
---|
752 | private void readKeyManyTimes(int count, int recordIndex) throws IOException { |
---|
753 | Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf); |
---|
754 | |
---|
755 | Scanner scanner = |
---|
756 | reader.createScanner(composeSortedKey(KEY, count, recordIndex) |
---|
757 | .getBytes(), null); |
---|
758 | |
---|
759 | // read the indexed key |
---|
760 | byte[] kbuf1 = new byte[BUF_SIZE]; |
---|
761 | int klen1 = scanner.entry().getKeyLength(); |
---|
762 | scanner.entry().getKey(kbuf1); |
---|
763 | Assert.assertEquals(new String(kbuf1, 0, klen1), composeSortedKey(KEY, |
---|
764 | count, recordIndex)); |
---|
765 | |
---|
766 | klen1 = scanner.entry().getKeyLength(); |
---|
767 | scanner.entry().getKey(kbuf1); |
---|
768 | Assert.assertEquals(new String(kbuf1, 0, klen1), composeSortedKey(KEY, |
---|
769 | count, recordIndex)); |
---|
770 | |
---|
771 | klen1 = scanner.entry().getKeyLength(); |
---|
772 | scanner.entry().getKey(kbuf1); |
---|
773 | Assert.assertEquals(new String(kbuf1, 0, klen1), composeSortedKey(KEY, |
---|
774 | count, recordIndex)); |
---|
775 | |
---|
776 | scanner.close(); |
---|
777 | reader.close(); |
---|
778 | } |
---|
779 | |
---|
780 | private void closeOutput() throws IOException { |
---|
781 | if (writer != null) { |
---|
782 | writer.close(); |
---|
783 | writer = null; |
---|
784 | } |
---|
785 | if (out != null) { |
---|
786 | out.close(); |
---|
787 | out = null; |
---|
788 | } |
---|
789 | } |
---|
790 | } |
---|