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<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.regionserver;</span>
<span class="source-line-no">019</span><span id="line-19"></span>
<span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.Arrays;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.Random;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.ThreadLocalRandom;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.FileSystem;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.fs.Path;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.HBaseConfiguration;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HConstants;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.KeyValue;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.io.compress.Compression;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.io.hfile.CacheConfig;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.io.hfile.HFileBlockIndex;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.io.hfile.HFileContext;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.io.hfile.HFileContextBuilder;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.util.BloomFilterFactory;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.util.BloomFilterUtil;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.io.BytesWritable;</span>
<span class="source-line-no">038</span><span id="line-38">import org.slf4j.Logger;</span>
<span class="source-line-no">039</span><span id="line-39">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">040</span><span id="line-40"></span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLineParser;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hbase.thirdparty.org.apache.commons.cli.HelpFormatter;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hbase.thirdparty.org.apache.commons.cli.Options;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hbase.thirdparty.org.apache.commons.cli.ParseException;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hbase.thirdparty.org.apache.commons.cli.PosixParser;</span>
<span class="source-line-no">047</span><span id="line-47"></span>
<span class="source-line-no">048</span><span id="line-48">/**</span>
<span class="source-line-no">049</span><span id="line-49"> * Creates an HFile with random key/value pairs.</span>
<span class="source-line-no">050</span><span id="line-50"> */</span>
<span class="source-line-no">051</span><span id="line-51">public class CreateRandomStoreFile {</span>
<span class="source-line-no">052</span><span id="line-52"></span>
<span class="source-line-no">053</span><span id="line-53"> /**</span>
<span class="source-line-no">054</span><span id="line-54"> * As much as this number of bytes can be added or subtracted from key/value lengths.</span>
<span class="source-line-no">055</span><span id="line-55"> */</span>
<span class="source-line-no">056</span><span id="line-56"> private static final int LEN_VARIATION = 5;</span>
<span class="source-line-no">057</span><span id="line-57"></span>
<span class="source-line-no">058</span><span id="line-58"> private static final Logger LOG = LoggerFactory.getLogger(CreateRandomStoreFile.class);</span>
<span class="source-line-no">059</span><span id="line-59"> private static final String OUTPUT_DIR_OPTION = "o";</span>
<span class="source-line-no">060</span><span id="line-60"> private static final String NUM_KV_OPTION = "n";</span>
<span class="source-line-no">061</span><span id="line-61"> private static final String HFILE_VERSION_OPTION = "h";</span>
<span class="source-line-no">062</span><span id="line-62"> private static final String KEY_SIZE_OPTION = "k";</span>
<span class="source-line-no">063</span><span id="line-63"> private static final String VALUE_SIZE_OPTION = "v";</span>
<span class="source-line-no">064</span><span id="line-64"> private static final String COMPRESSION_OPTION = "c";</span>
<span class="source-line-no">065</span><span id="line-65"> private static final String BLOOM_FILTER_OPTION = "bf";</span>
<span class="source-line-no">066</span><span id="line-66"> private static final String BLOOM_FILTER_PARAM_OPTION = "bfp";</span>
<span class="source-line-no">067</span><span id="line-67"> private static final String BLOCK_SIZE_OPTION = "bs";</span>
<span class="source-line-no">068</span><span id="line-68"> private static final String BLOOM_BLOCK_SIZE_OPTION = "bfbs";</span>
<span class="source-line-no">069</span><span id="line-69"> private static final String INDEX_BLOCK_SIZE_OPTION = "ibs";</span>
<span class="source-line-no">070</span><span id="line-70"></span>
<span class="source-line-no">071</span><span id="line-71"> /** The exit code this command-line tool returns on failure */</span>
<span class="source-line-no">072</span><span id="line-72"> private static final int EXIT_FAILURE = 1;</span>
<span class="source-line-no">073</span><span id="line-73"></span>
<span class="source-line-no">074</span><span id="line-74"> /** The number of valid key types in a store file */</span>
<span class="source-line-no">075</span><span id="line-75"> private static final int NUM_VALID_KEY_TYPES = KeyValue.Type.values().length - 2;</span>
<span class="source-line-no">076</span><span id="line-76"></span>
<span class="source-line-no">077</span><span id="line-77"> private Options options = new Options();</span>
<span class="source-line-no">078</span><span id="line-78"></span>
<span class="source-line-no">079</span><span id="line-79"> private int keyPrefixLen, keyLen, rowLen, cfLen, valueLen;</span>
<span class="source-line-no">080</span><span id="line-80"></span>
<span class="source-line-no">081</span><span id="line-81"> /**</span>
<span class="source-line-no">082</span><span id="line-82"> * Runs the tools.</span>
<span class="source-line-no">083</span><span id="line-83"> * @param args command-line arguments</span>
<span class="source-line-no">084</span><span id="line-84"> * @return true in case of success</span>
<span class="source-line-no">085</span><span id="line-85"> */</span>
<span class="source-line-no">086</span><span id="line-86"> public boolean run(String[] args) throws IOException {</span>
<span class="source-line-no">087</span><span id="line-87"> options.addOption(OUTPUT_DIR_OPTION, "output_dir", true, "Output directory");</span>
<span class="source-line-no">088</span><span id="line-88"> options.addOption(NUM_KV_OPTION, "num_kv", true, "Number of key/value pairs");</span>
<span class="source-line-no">089</span><span id="line-89"> options.addOption(KEY_SIZE_OPTION, "key_size", true, "Average key size");</span>
<span class="source-line-no">090</span><span id="line-90"> options.addOption(VALUE_SIZE_OPTION, "value_size", true, "Average value size");</span>
<span class="source-line-no">091</span><span id="line-91"> options.addOption(HFILE_VERSION_OPTION, "hfile_version", true, "HFile version to create");</span>
<span class="source-line-no">092</span><span id="line-92"> options.addOption(COMPRESSION_OPTION, "compression", true,</span>
<span class="source-line-no">093</span><span id="line-93"> " Compression type, one of " + Arrays.toString(Compression.Algorithm.values()));</span>
<span class="source-line-no">094</span><span id="line-94"> options.addOption(BLOOM_FILTER_OPTION, "bloom_filter", true,</span>
<span class="source-line-no">095</span><span id="line-95"> "Bloom filter type, one of " + Arrays.toString(BloomType.values()));</span>
<span class="source-line-no">096</span><span id="line-96"> options.addOption(BLOOM_FILTER_PARAM_OPTION, "bloom_param", true,</span>
<span class="source-line-no">097</span><span id="line-97"> "the parameter of the bloom filter");</span>
<span class="source-line-no">098</span><span id="line-98"> options.addOption(BLOCK_SIZE_OPTION, "block_size", true, "HFile block size");</span>
<span class="source-line-no">099</span><span id="line-99"> options.addOption(BLOOM_BLOCK_SIZE_OPTION, "bloom_block_size", true,</span>
<span class="source-line-no">100</span><span id="line-100"> "Compound Bloom filters block size");</span>
<span class="source-line-no">101</span><span id="line-101"> options.addOption(INDEX_BLOCK_SIZE_OPTION, "index_block_size", true, "Index block size");</span>
<span class="source-line-no">102</span><span id="line-102"></span>
<span class="source-line-no">103</span><span id="line-103"> if (args.length == 0) {</span>
<span class="source-line-no">104</span><span id="line-104"> HelpFormatter formatter = new HelpFormatter();</span>
<span class="source-line-no">105</span><span id="line-105"> formatter.printHelp(CreateRandomStoreFile.class.getSimpleName(), options, true);</span>
<span class="source-line-no">106</span><span id="line-106"> return false;</span>
<span class="source-line-no">107</span><span id="line-107"> }</span>
<span class="source-line-no">108</span><span id="line-108"></span>
<span class="source-line-no">109</span><span id="line-109"> CommandLineParser parser = new PosixParser();</span>
<span class="source-line-no">110</span><span id="line-110"> CommandLine cmdLine;</span>
<span class="source-line-no">111</span><span id="line-111"> try {</span>
<span class="source-line-no">112</span><span id="line-112"> cmdLine = parser.parse(options, args);</span>
<span class="source-line-no">113</span><span id="line-113"> } catch (ParseException ex) {</span>
<span class="source-line-no">114</span><span id="line-114"> LOG.error(ex.toString(), ex);</span>
<span class="source-line-no">115</span><span id="line-115"> return false;</span>
<span class="source-line-no">116</span><span id="line-116"> }</span>
<span class="source-line-no">117</span><span id="line-117"></span>
<span class="source-line-no">118</span><span id="line-118"> if (!cmdLine.hasOption(OUTPUT_DIR_OPTION)) {</span>
<span class="source-line-no">119</span><span id="line-119"> LOG.error("Output directory is not specified");</span>
<span class="source-line-no">120</span><span id="line-120"> return false;</span>
<span class="source-line-no">121</span><span id="line-121"> }</span>
<span class="source-line-no">122</span><span id="line-122"></span>
<span class="source-line-no">123</span><span id="line-123"> if (!cmdLine.hasOption(NUM_KV_OPTION)) {</span>
<span class="source-line-no">124</span><span id="line-124"> LOG.error("The number of keys/values not specified");</span>
<span class="source-line-no">125</span><span id="line-125"> return false;</span>
<span class="source-line-no">126</span><span id="line-126"> }</span>
<span class="source-line-no">127</span><span id="line-127"></span>
<span class="source-line-no">128</span><span id="line-128"> if (!cmdLine.hasOption(KEY_SIZE_OPTION)) {</span>
<span class="source-line-no">129</span><span id="line-129"> LOG.error("Key size is not specified");</span>
<span class="source-line-no">130</span><span id="line-130"> return false;</span>
<span class="source-line-no">131</span><span id="line-131"> }</span>
<span class="source-line-no">132</span><span id="line-132"></span>
<span class="source-line-no">133</span><span id="line-133"> if (!cmdLine.hasOption(VALUE_SIZE_OPTION)) {</span>
<span class="source-line-no">134</span><span id="line-134"> LOG.error("Value size not specified");</span>
<span class="source-line-no">135</span><span id="line-135"> return false;</span>
<span class="source-line-no">136</span><span id="line-136"> }</span>
<span class="source-line-no">137</span><span id="line-137"></span>
<span class="source-line-no">138</span><span id="line-138"> Configuration conf = HBaseConfiguration.create();</span>
<span class="source-line-no">139</span><span id="line-139"></span>
<span class="source-line-no">140</span><span id="line-140"> Path outputDir = new Path(cmdLine.getOptionValue(OUTPUT_DIR_OPTION));</span>
<span class="source-line-no">141</span><span id="line-141"></span>
<span class="source-line-no">142</span><span id="line-142"> long numKV = Long.parseLong(cmdLine.getOptionValue(NUM_KV_OPTION));</span>
<span class="source-line-no">143</span><span id="line-143"> configureKeyValue(numKV, Integer.parseInt(cmdLine.getOptionValue(KEY_SIZE_OPTION)),</span>
<span class="source-line-no">144</span><span id="line-144"> Integer.parseInt(cmdLine.getOptionValue(VALUE_SIZE_OPTION)));</span>
<span class="source-line-no">145</span><span id="line-145"></span>
<span class="source-line-no">146</span><span id="line-146"> FileSystem fs = FileSystem.get(conf);</span>
<span class="source-line-no">147</span><span id="line-147"></span>
<span class="source-line-no">148</span><span id="line-148"> Compression.Algorithm compr = Compression.Algorithm.NONE;</span>
<span class="source-line-no">149</span><span id="line-149"> if (cmdLine.hasOption(COMPRESSION_OPTION)) {</span>
<span class="source-line-no">150</span><span id="line-150"> compr = Compression.Algorithm.valueOf(cmdLine.getOptionValue(COMPRESSION_OPTION));</span>
<span class="source-line-no">151</span><span id="line-151"> }</span>
<span class="source-line-no">152</span><span id="line-152"></span>
<span class="source-line-no">153</span><span id="line-153"> BloomType bloomType = BloomType.NONE;</span>
<span class="source-line-no">154</span><span id="line-154"> if (cmdLine.hasOption(BLOOM_FILTER_OPTION)) {</span>
<span class="source-line-no">155</span><span id="line-155"> bloomType = BloomType.valueOf(cmdLine.getOptionValue(BLOOM_FILTER_OPTION));</span>
<span class="source-line-no">156</span><span id="line-156"> }</span>
<span class="source-line-no">157</span><span id="line-157"></span>
<span class="source-line-no">158</span><span id="line-158"> if (bloomType == BloomType.ROWPREFIX_FIXED_LENGTH) {</span>
<span class="source-line-no">159</span><span id="line-159"> if (!cmdLine.hasOption(BLOOM_FILTER_PARAM_OPTION)) {</span>
<span class="source-line-no">160</span><span id="line-160"> LOG.error("the parameter of bloom filter is not specified");</span>
<span class="source-line-no">161</span><span id="line-161"> return false;</span>
<span class="source-line-no">162</span><span id="line-162"> } else {</span>
<span class="source-line-no">163</span><span id="line-163"> conf.set(BloomFilterUtil.PREFIX_LENGTH_KEY,</span>
<span class="source-line-no">164</span><span id="line-164"> cmdLine.getOptionValue(BLOOM_FILTER_PARAM_OPTION));</span>
<span class="source-line-no">165</span><span id="line-165"> }</span>
<span class="source-line-no">166</span><span id="line-166"> }</span>
<span class="source-line-no">167</span><span id="line-167"></span>
<span class="source-line-no">168</span><span id="line-168"> int blockSize = HConstants.DEFAULT_BLOCKSIZE;</span>
<span class="source-line-no">169</span><span id="line-169"> if (cmdLine.hasOption(BLOCK_SIZE_OPTION))</span>
<span class="source-line-no">170</span><span id="line-170"> blockSize = Integer.valueOf(cmdLine.getOptionValue(BLOCK_SIZE_OPTION));</span>
<span class="source-line-no">171</span><span id="line-171"></span>
<span class="source-line-no">172</span><span id="line-172"> if (cmdLine.hasOption(BLOOM_BLOCK_SIZE_OPTION)) {</span>
<span class="source-line-no">173</span><span id="line-173"> conf.setInt(BloomFilterFactory.IO_STOREFILE_BLOOM_BLOCK_SIZE,</span>
<span class="source-line-no">174</span><span id="line-174"> Integer.valueOf(cmdLine.getOptionValue(BLOOM_BLOCK_SIZE_OPTION)));</span>
<span class="source-line-no">175</span><span id="line-175"> }</span>
<span class="source-line-no">176</span><span id="line-176"></span>
<span class="source-line-no">177</span><span id="line-177"> if (cmdLine.hasOption(INDEX_BLOCK_SIZE_OPTION)) {</span>
<span class="source-line-no">178</span><span id="line-178"> conf.setInt(HFileBlockIndex.MAX_CHUNK_SIZE_KEY,</span>
<span class="source-line-no">179</span><span id="line-179"> Integer.valueOf(cmdLine.getOptionValue(INDEX_BLOCK_SIZE_OPTION)));</span>
<span class="source-line-no">180</span><span id="line-180"> }</span>
<span class="source-line-no">181</span><span id="line-181"></span>
<span class="source-line-no">182</span><span id="line-182"> HFileContext meta =</span>
<span class="source-line-no">183</span><span id="line-183"> new HFileContextBuilder().withCompression(compr).withBlockSize(blockSize).build();</span>
<span class="source-line-no">184</span><span id="line-184"> StoreFileWriter sfw =</span>
<span class="source-line-no">185</span><span id="line-185"> new StoreFileWriter.Builder(conf, new CacheConfig(conf), fs).withOutputDir(outputDir)</span>
<span class="source-line-no">186</span><span id="line-186"> .withBloomType(bloomType).withMaxKeyCount(numKV).withFileContext(meta).build();</span>
<span class="source-line-no">187</span><span id="line-187"></span>
<span class="source-line-no">188</span><span id="line-188"> LOG.info("Writing " + numKV + " key/value pairs");</span>
<span class="source-line-no">189</span><span id="line-189"> for (long i = 0; i &lt; numKV; ++i) {</span>
<span class="source-line-no">190</span><span id="line-190"> sfw.append(generateKeyValue(i));</span>
<span class="source-line-no">191</span><span id="line-191"> }</span>
<span class="source-line-no">192</span><span id="line-192"></span>
<span class="source-line-no">193</span><span id="line-193"> int numMetaBlocks = ThreadLocalRandom.current().nextInt(10) + 1;</span>
<span class="source-line-no">194</span><span id="line-194"> LOG.info("Writing " + numMetaBlocks + " meta blocks");</span>
<span class="source-line-no">195</span><span id="line-195"> for (int metaI = 0; metaI &lt; numMetaBlocks; ++metaI) {</span>
<span class="source-line-no">196</span><span id="line-196"> sfw.getLiveFileWriter().appendMetaBlock(generateString(), new BytesWritable(generateValue()));</span>
<span class="source-line-no">197</span><span id="line-197"> }</span>
<span class="source-line-no">198</span><span id="line-198"> sfw.close();</span>
<span class="source-line-no">199</span><span id="line-199"></span>
<span class="source-line-no">200</span><span id="line-200"> Path storeFilePath = sfw.getPath();</span>
<span class="source-line-no">201</span><span id="line-201"> long fileSize = fs.getFileStatus(storeFilePath).getLen();</span>
<span class="source-line-no">202</span><span id="line-202"> LOG.info("Created {}, {} bytes, compression={}", storeFilePath, fileSize, compr.toString());</span>
<span class="source-line-no">203</span><span id="line-203"></span>
<span class="source-line-no">204</span><span id="line-204"> return true;</span>
<span class="source-line-no">205</span><span id="line-205"> }</span>
<span class="source-line-no">206</span><span id="line-206"></span>
<span class="source-line-no">207</span><span id="line-207"> private void configureKeyValue(long numKV, int keyLen, int valueLen) {</span>
<span class="source-line-no">208</span><span id="line-208"> numKV = Math.abs(numKV);</span>
<span class="source-line-no">209</span><span id="line-209"> keyLen = Math.abs(keyLen);</span>
<span class="source-line-no">210</span><span id="line-210"> keyPrefixLen = 0;</span>
<span class="source-line-no">211</span><span id="line-211"> while (numKV != 0) {</span>
<span class="source-line-no">212</span><span id="line-212"> numKV &gt;&gt;&gt;= 8;</span>
<span class="source-line-no">213</span><span id="line-213"> ++keyPrefixLen;</span>
<span class="source-line-no">214</span><span id="line-214"> }</span>
<span class="source-line-no">215</span><span id="line-215"></span>
<span class="source-line-no">216</span><span id="line-216"> this.keyLen = Math.max(keyPrefixLen, keyLen);</span>
<span class="source-line-no">217</span><span id="line-217"> this.valueLen = valueLen;</span>
<span class="source-line-no">218</span><span id="line-218"></span>
<span class="source-line-no">219</span><span id="line-219"> // Arbitrarily split the key into row, column family, and qualifier.</span>
<span class="source-line-no">220</span><span id="line-220"> rowLen = keyPrefixLen / 3;</span>
<span class="source-line-no">221</span><span id="line-221"> cfLen = keyPrefixLen / 4;</span>
<span class="source-line-no">222</span><span id="line-222"> }</span>
<span class="source-line-no">223</span><span id="line-223"></span>
<span class="source-line-no">224</span><span id="line-224"> private int nextInRange(int range) {</span>
<span class="source-line-no">225</span><span id="line-225"> return ThreadLocalRandom.current().nextInt(2 * range + 1) - range;</span>
<span class="source-line-no">226</span><span id="line-226"> }</span>
<span class="source-line-no">227</span><span id="line-227"></span>
<span class="source-line-no">228</span><span id="line-228"> public KeyValue generateKeyValue(long i) {</span>
<span class="source-line-no">229</span><span id="line-229"> byte[] k = generateKey(i);</span>
<span class="source-line-no">230</span><span id="line-230"> byte[] v = generateValue();</span>
<span class="source-line-no">231</span><span id="line-231"> Random rand = ThreadLocalRandom.current();</span>
<span class="source-line-no">232</span><span id="line-232"> return new KeyValue(k, 0, rowLen, k, rowLen, cfLen, k, rowLen + cfLen,</span>
<span class="source-line-no">233</span><span id="line-233"> k.length - rowLen - cfLen, rand.nextLong(), generateKeyType(rand), v, 0, v.length);</span>
<span class="source-line-no">234</span><span id="line-234"> }</span>
<span class="source-line-no">235</span><span id="line-235"></span>
<span class="source-line-no">236</span><span id="line-236"> public static KeyValue.Type generateKeyType(Random rand) {</span>
<span class="source-line-no">237</span><span id="line-237"> if (rand.nextBoolean()) {</span>
<span class="source-line-no">238</span><span id="line-238"> // Let's make half of KVs puts.</span>
<span class="source-line-no">239</span><span id="line-239"> return KeyValue.Type.Put;</span>
<span class="source-line-no">240</span><span id="line-240"> } else {</span>
<span class="source-line-no">241</span><span id="line-241"> KeyValue.Type keyType = KeyValue.Type.values()[1 + rand.nextInt(NUM_VALID_KEY_TYPES)];</span>
<span class="source-line-no">242</span><span id="line-242"> if (keyType == KeyValue.Type.Minimum || keyType == KeyValue.Type.Maximum) {</span>
<span class="source-line-no">243</span><span id="line-243"> throw new RuntimeException("Generated an invalid key type: " + keyType + ". "</span>
<span class="source-line-no">244</span><span id="line-244"> + "Probably the layout of KeyValue.Type has changed.");</span>
<span class="source-line-no">245</span><span id="line-245"> }</span>
<span class="source-line-no">246</span><span id="line-246"> return keyType;</span>
<span class="source-line-no">247</span><span id="line-247"> }</span>
<span class="source-line-no">248</span><span id="line-248"> }</span>
<span class="source-line-no">249</span><span id="line-249"></span>
<span class="source-line-no">250</span><span id="line-250"> private String generateString() {</span>
<span class="source-line-no">251</span><span id="line-251"> Random rand = ThreadLocalRandom.current();</span>
<span class="source-line-no">252</span><span id="line-252"> StringBuilder sb = new StringBuilder();</span>
<span class="source-line-no">253</span><span id="line-253"> for (int i = 0; i &lt; rand.nextInt(10); ++i) {</span>
<span class="source-line-no">254</span><span id="line-254"> sb.append((char) ('A' + rand.nextInt(26)));</span>
<span class="source-line-no">255</span><span id="line-255"> }</span>
<span class="source-line-no">256</span><span id="line-256"> return sb.toString();</span>
<span class="source-line-no">257</span><span id="line-257"> }</span>
<span class="source-line-no">258</span><span id="line-258"></span>
<span class="source-line-no">259</span><span id="line-259"> private byte[] generateKey(long i) {</span>
<span class="source-line-no">260</span><span id="line-260"> Random rand = ThreadLocalRandom.current();</span>
<span class="source-line-no">261</span><span id="line-261"> byte[] k = new byte[Math.max(keyPrefixLen, keyLen + nextInRange(LEN_VARIATION))];</span>
<span class="source-line-no">262</span><span id="line-262"> for (int pos = keyPrefixLen - 1; pos &gt;= 0; --pos) {</span>
<span class="source-line-no">263</span><span id="line-263"> k[pos] = (byte) (i &amp; 0xFF);</span>
<span class="source-line-no">264</span><span id="line-264"> i &gt;&gt;&gt;= 8;</span>
<span class="source-line-no">265</span><span id="line-265"> }</span>
<span class="source-line-no">266</span><span id="line-266"> for (int pos = keyPrefixLen; pos &lt; k.length; ++pos) {</span>
<span class="source-line-no">267</span><span id="line-267"> k[pos] = (byte) rand.nextInt(256);</span>
<span class="source-line-no">268</span><span id="line-268"> }</span>
<span class="source-line-no">269</span><span id="line-269"> return k;</span>
<span class="source-line-no">270</span><span id="line-270"> }</span>
<span class="source-line-no">271</span><span id="line-271"></span>
<span class="source-line-no">272</span><span id="line-272"> private byte[] generateValue() {</span>
<span class="source-line-no">273</span><span id="line-273"> Random rand = ThreadLocalRandom.current();</span>
<span class="source-line-no">274</span><span id="line-274"> byte[] v = new byte[Math.max(1, valueLen + nextInRange(LEN_VARIATION))];</span>
<span class="source-line-no">275</span><span id="line-275"> for (int i = 0; i &lt; v.length; ++i) {</span>
<span class="source-line-no">276</span><span id="line-276"> v[i] = (byte) rand.nextInt(256);</span>
<span class="source-line-no">277</span><span id="line-277"> }</span>
<span class="source-line-no">278</span><span id="line-278"> return v;</span>
<span class="source-line-no">279</span><span id="line-279"> }</span>
<span class="source-line-no">280</span><span id="line-280"></span>
<span class="source-line-no">281</span><span id="line-281"> public static void main(String[] args) {</span>
<span class="source-line-no">282</span><span id="line-282"> CreateRandomStoreFile app = new CreateRandomStoreFile();</span>
<span class="source-line-no">283</span><span id="line-283"> try {</span>
<span class="source-line-no">284</span><span id="line-284"> if (!app.run(args)) System.exit(EXIT_FAILURE);</span>
<span class="source-line-no">285</span><span id="line-285"> } catch (IOException ex) {</span>
<span class="source-line-no">286</span><span id="line-286"> LOG.error(ex.toString(), ex);</span>
<span class="source-line-no">287</span><span id="line-287"> System.exit(EXIT_FAILURE);</span>
<span class="source-line-no">288</span><span id="line-288"> }</span>
<span class="source-line-no">289</span><span id="line-289"></span>
<span class="source-line-no">290</span><span id="line-290"> }</span>
<span class="source-line-no">291</span><span id="line-291"></span>
<span class="source-line-no">292</span><span id="line-292">}</span>
</pre>
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