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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.io.hfile;</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 static org.junit.Assert.assertEquals;</span>
<span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertNotNull;</span>
<span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertTrue;</span>
<span class="source-line-no">023</span><span id="line-23"></span>
<span class="source-line-no">024</span><span id="line-24">import java.io.ByteArrayInputStream;</span>
<span class="source-line-no">025</span><span id="line-25">import java.io.DataInputStream;</span>
<span class="source-line-no">026</span><span id="line-26">import java.io.IOException;</span>
<span class="source-line-no">027</span><span id="line-27">import java.util.ArrayList;</span>
<span class="source-line-no">028</span><span id="line-28">import java.util.Collection;</span>
<span class="source-line-no">029</span><span id="line-29">import java.util.List;</span>
<span class="source-line-no">030</span><span id="line-30">import java.util.Random;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.fs.FSDataInputStream;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.fs.FileSystem;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.fs.Path;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.ArrayBackedTag;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.Cell;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.CellComparator;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.HBaseCommonTestingUtil;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.HBaseTestingUtil;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.HConstants;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.KeyValue;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.Tag;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.io.ByteBuffAllocator;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.io.compress.Compression;</span>
<span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;</span>
<span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;</span>
<span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.nio.ByteBuff;</span>
<span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.testclassification.IOTests;</span>
<span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.util.Writables;</span>
<span class="source-line-no">054</span><span id="line-54">import org.apache.hadoop.io.Text;</span>
<span class="source-line-no">055</span><span id="line-55">import org.apache.hadoop.io.WritableUtils;</span>
<span class="source-line-no">056</span><span id="line-56">import org.junit.Before;</span>
<span class="source-line-no">057</span><span id="line-57">import org.junit.ClassRule;</span>
<span class="source-line-no">058</span><span id="line-58">import org.junit.Test;</span>
<span class="source-line-no">059</span><span id="line-59">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">060</span><span id="line-60">import org.junit.runner.RunWith;</span>
<span class="source-line-no">061</span><span id="line-61">import org.junit.runners.Parameterized;</span>
<span class="source-line-no">062</span><span id="line-62">import org.junit.runners.Parameterized.Parameters;</span>
<span class="source-line-no">063</span><span id="line-63">import org.slf4j.Logger;</span>
<span class="source-line-no">064</span><span id="line-64">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">065</span><span id="line-65"></span>
<span class="source-line-no">066</span><span id="line-66">/**</span>
<span class="source-line-no">067</span><span id="line-67"> * Testing writing a version 3 {@link HFile}.</span>
<span class="source-line-no">068</span><span id="line-68"> */</span>
<span class="source-line-no">069</span><span id="line-69">@RunWith(Parameterized.class)</span>
<span class="source-line-no">070</span><span id="line-70">@Category({ IOTests.class, SmallTests.class })</span>
<span class="source-line-no">071</span><span id="line-71">public class TestHFileWriterV3 {</span>
<span class="source-line-no">072</span><span id="line-72"></span>
<span class="source-line-no">073</span><span id="line-73"> @ClassRule</span>
<span class="source-line-no">074</span><span id="line-74"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">075</span><span id="line-75"> HBaseClassTestRule.forClass(TestHFileWriterV3.class);</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 static final Logger LOG = LoggerFactory.getLogger(TestHFileWriterV3.class);</span>
<span class="source-line-no">078</span><span id="line-78"> private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();</span>
<span class="source-line-no">079</span><span id="line-79"> private static final Random RNG = new Random(9713312); // Just a fixed seed.</span>
<span class="source-line-no">080</span><span id="line-80"></span>
<span class="source-line-no">081</span><span id="line-81"> private Configuration conf;</span>
<span class="source-line-no">082</span><span id="line-82"> private FileSystem fs;</span>
<span class="source-line-no">083</span><span id="line-83"> private boolean useTags;</span>
<span class="source-line-no">084</span><span id="line-84"></span>
<span class="source-line-no">085</span><span id="line-85"> public TestHFileWriterV3(boolean useTags) {</span>
<span class="source-line-no">086</span><span id="line-86"> this.useTags = useTags;</span>
<span class="source-line-no">087</span><span id="line-87"> }</span>
<span class="source-line-no">088</span><span id="line-88"></span>
<span class="source-line-no">089</span><span id="line-89"> @Parameters</span>
<span class="source-line-no">090</span><span id="line-90"> public static Collection&lt;Object[]&gt; parameters() {</span>
<span class="source-line-no">091</span><span id="line-91"> return HBaseCommonTestingUtil.BOOLEAN_PARAMETERIZED;</span>
<span class="source-line-no">092</span><span id="line-92"> }</span>
<span class="source-line-no">093</span><span id="line-93"></span>
<span class="source-line-no">094</span><span id="line-94"> @Before</span>
<span class="source-line-no">095</span><span id="line-95"> public void setUp() throws IOException {</span>
<span class="source-line-no">096</span><span id="line-96"> conf = TEST_UTIL.getConfiguration();</span>
<span class="source-line-no">097</span><span id="line-97"> fs = FileSystem.get(conf);</span>
<span class="source-line-no">098</span><span id="line-98"> }</span>
<span class="source-line-no">099</span><span id="line-99"></span>
<span class="source-line-no">100</span><span id="line-100"> @Test</span>
<span class="source-line-no">101</span><span id="line-101"> public void testHFileFormatV3() throws IOException {</span>
<span class="source-line-no">102</span><span id="line-102"> testHFileFormatV3Internals(useTags);</span>
<span class="source-line-no">103</span><span id="line-103"> }</span>
<span class="source-line-no">104</span><span id="line-104"></span>
<span class="source-line-no">105</span><span id="line-105"> private void testHFileFormatV3Internals(boolean useTags) throws IOException {</span>
<span class="source-line-no">106</span><span id="line-106"> Path hfilePath = new Path(TEST_UTIL.getDataTestDir(), "testHFileFormatV3");</span>
<span class="source-line-no">107</span><span id="line-107"> final Compression.Algorithm compressAlgo = Compression.Algorithm.GZ;</span>
<span class="source-line-no">108</span><span id="line-108"> final int entryCount = 10000;</span>
<span class="source-line-no">109</span><span id="line-109"> writeDataAndReadFromHFile(hfilePath, compressAlgo, entryCount, false, useTags);</span>
<span class="source-line-no">110</span><span id="line-110"> }</span>
<span class="source-line-no">111</span><span id="line-111"></span>
<span class="source-line-no">112</span><span id="line-112"> @Test</span>
<span class="source-line-no">113</span><span id="line-113"> public void testMidKeyInHFile() throws IOException {</span>
<span class="source-line-no">114</span><span id="line-114"> testMidKeyInHFileInternals(useTags);</span>
<span class="source-line-no">115</span><span id="line-115"> }</span>
<span class="source-line-no">116</span><span id="line-116"></span>
<span class="source-line-no">117</span><span id="line-117"> private void testMidKeyInHFileInternals(boolean useTags) throws IOException {</span>
<span class="source-line-no">118</span><span id="line-118"> Path hfilePath = new Path(TEST_UTIL.getDataTestDir(), "testMidKeyInHFile");</span>
<span class="source-line-no">119</span><span id="line-119"> Compression.Algorithm compressAlgo = Compression.Algorithm.NONE;</span>
<span class="source-line-no">120</span><span id="line-120"> int entryCount = 50000;</span>
<span class="source-line-no">121</span><span id="line-121"> writeDataAndReadFromHFile(hfilePath, compressAlgo, entryCount, true, useTags);</span>
<span class="source-line-no">122</span><span id="line-122"> }</span>
<span class="source-line-no">123</span><span id="line-123"></span>
<span class="source-line-no">124</span><span id="line-124"> private void writeDataAndReadFromHFile(Path hfilePath, Algorithm compressAlgo, int entryCount,</span>
<span class="source-line-no">125</span><span id="line-125"> boolean findMidKey, boolean useTags) throws IOException {</span>
<span class="source-line-no">126</span><span id="line-126"> HFileContext context = new HFileContextBuilder().withBlockSize(4096).withIncludesTags(useTags)</span>
<span class="source-line-no">127</span><span id="line-127"> .withDataBlockEncoding(DataBlockEncoding.NONE).withCompression(compressAlgo).build();</span>
<span class="source-line-no">128</span><span id="line-128"> CacheConfig cacheConfig = new CacheConfig(conf);</span>
<span class="source-line-no">129</span><span id="line-129"> HFile.Writer writer = new HFile.WriterFactory(conf, cacheConfig).withPath(fs, hfilePath)</span>
<span class="source-line-no">130</span><span id="line-130"> .withFileContext(context).create();</span>
<span class="source-line-no">131</span><span id="line-131"></span>
<span class="source-line-no">132</span><span id="line-132"> List&lt;KeyValue&gt; keyValues = new ArrayList&lt;&gt;(entryCount);</span>
<span class="source-line-no">133</span><span id="line-133"> for (int i = 0; i &lt; entryCount; ++i) {</span>
<span class="source-line-no">134</span><span id="line-134"> byte[] keyBytes = RandomKeyValueUtil.randomOrderedKey(RNG, i);</span>
<span class="source-line-no">135</span><span id="line-135"> // A random-length random value.</span>
<span class="source-line-no">136</span><span id="line-136"> byte[] valueBytes = RandomKeyValueUtil.randomValue(RNG);</span>
<span class="source-line-no">137</span><span id="line-137"> KeyValue keyValue = null;</span>
<span class="source-line-no">138</span><span id="line-138"> if (useTags) {</span>
<span class="source-line-no">139</span><span id="line-139"> ArrayList&lt;Tag&gt; tags = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">140</span><span id="line-140"> for (int j = 0; j &lt; 1 + RNG.nextInt(4); j++) {</span>
<span class="source-line-no">141</span><span id="line-141"> byte[] tagBytes = new byte[16];</span>
<span class="source-line-no">142</span><span id="line-142"> RNG.nextBytes(tagBytes);</span>
<span class="source-line-no">143</span><span id="line-143"> tags.add(new ArrayBackedTag((byte) 1, tagBytes));</span>
<span class="source-line-no">144</span><span id="line-144"> }</span>
<span class="source-line-no">145</span><span id="line-145"> keyValue =</span>
<span class="source-line-no">146</span><span id="line-146"> new KeyValue(keyBytes, null, null, HConstants.LATEST_TIMESTAMP, valueBytes, tags);</span>
<span class="source-line-no">147</span><span id="line-147"> } else {</span>
<span class="source-line-no">148</span><span id="line-148"> keyValue = new KeyValue(keyBytes, null, null, HConstants.LATEST_TIMESTAMP, valueBytes);</span>
<span class="source-line-no">149</span><span id="line-149"> }</span>
<span class="source-line-no">150</span><span id="line-150"> writer.append(keyValue);</span>
<span class="source-line-no">151</span><span id="line-151"> keyValues.add(keyValue);</span>
<span class="source-line-no">152</span><span id="line-152"> }</span>
<span class="source-line-no">153</span><span id="line-153"></span>
<span class="source-line-no">154</span><span id="line-154"> // Add in an arbitrary order. They will be sorted lexicographically by</span>
<span class="source-line-no">155</span><span id="line-155"> // the key.</span>
<span class="source-line-no">156</span><span id="line-156"> writer.appendMetaBlock("CAPITAL_OF_USA", new Text("Washington, D.C."));</span>
<span class="source-line-no">157</span><span id="line-157"> writer.appendMetaBlock("CAPITAL_OF_RUSSIA", new Text("Moscow"));</span>
<span class="source-line-no">158</span><span id="line-158"> writer.appendMetaBlock("CAPITAL_OF_FRANCE", new Text("Paris"));</span>
<span class="source-line-no">159</span><span id="line-159"></span>
<span class="source-line-no">160</span><span id="line-160"> writer.close();</span>
<span class="source-line-no">161</span><span id="line-161"></span>
<span class="source-line-no">162</span><span id="line-162"> FSDataInputStream fsdis = fs.open(hfilePath);</span>
<span class="source-line-no">163</span><span id="line-163"></span>
<span class="source-line-no">164</span><span id="line-164"> long fileSize = fs.getFileStatus(hfilePath).getLen();</span>
<span class="source-line-no">165</span><span id="line-165"> FixedFileTrailer trailer = FixedFileTrailer.readFromStream(fsdis, fileSize);</span>
<span class="source-line-no">166</span><span id="line-166"></span>
<span class="source-line-no">167</span><span id="line-167"> assertEquals(3, trailer.getMajorVersion());</span>
<span class="source-line-no">168</span><span id="line-168"> assertEquals(entryCount, trailer.getEntryCount());</span>
<span class="source-line-no">169</span><span id="line-169"> HFileContext meta = new HFileContextBuilder().withCompression(compressAlgo)</span>
<span class="source-line-no">170</span><span id="line-170"> .withIncludesMvcc(false).withIncludesTags(useTags)</span>
<span class="source-line-no">171</span><span id="line-171"> .withDataBlockEncoding(DataBlockEncoding.NONE).withHBaseCheckSum(true).build();</span>
<span class="source-line-no">172</span><span id="line-172"> ReaderContext readerContext =</span>
<span class="source-line-no">173</span><span id="line-173"> new ReaderContextBuilder().withInputStreamWrapper(new FSDataInputStreamWrapper(fsdis))</span>
<span class="source-line-no">174</span><span id="line-174"> .withFilePath(hfilePath).withFileSystem(fs).withFileSize(fileSize).build();</span>
<span class="source-line-no">175</span><span id="line-175"> HFileBlock.FSReader blockReader =</span>
<span class="source-line-no">176</span><span id="line-176"> new HFileBlock.FSReaderImpl(readerContext, meta, ByteBuffAllocator.HEAP, conf);</span>
<span class="source-line-no">177</span><span id="line-177"> // Comparator class name is stored in the trailer in version 3.</span>
<span class="source-line-no">178</span><span id="line-178"> CellComparator comparator = trailer.createComparator();</span>
<span class="source-line-no">179</span><span id="line-179"> HFileBlockIndex.BlockIndexReader dataBlockIndexReader =</span>
<span class="source-line-no">180</span><span id="line-180"> new HFileBlockIndex.CellBasedKeyBlockIndexReaderV2(comparator,</span>
<span class="source-line-no">181</span><span id="line-181"> trailer.getNumDataIndexLevels());</span>
<span class="source-line-no">182</span><span id="line-182"> HFileBlockIndex.BlockIndexReader metaBlockIndexReader =</span>
<span class="source-line-no">183</span><span id="line-183"> new HFileBlockIndex.ByteArrayKeyBlockIndexReader(1);</span>
<span class="source-line-no">184</span><span id="line-184"></span>
<span class="source-line-no">185</span><span id="line-185"> HFileBlock.BlockIterator blockIter = blockReader.blockRange(trailer.getLoadOnOpenDataOffset(),</span>
<span class="source-line-no">186</span><span id="line-186"> fileSize - trailer.getTrailerSize());</span>
<span class="source-line-no">187</span><span id="line-187"> // Data index. We also read statistics about the block index written after</span>
<span class="source-line-no">188</span><span id="line-188"> // the root level.</span>
<span class="source-line-no">189</span><span id="line-189"> dataBlockIndexReader.readMultiLevelIndexRoot(</span>
<span class="source-line-no">190</span><span id="line-190"> blockIter.nextBlockWithBlockType(BlockType.ROOT_INDEX), trailer.getDataIndexCount());</span>
<span class="source-line-no">191</span><span id="line-191"></span>
<span class="source-line-no">192</span><span id="line-192"> FSDataInputStreamWrapper wrapper = new FSDataInputStreamWrapper(fs, hfilePath);</span>
<span class="source-line-no">193</span><span id="line-193"> readerContext = new ReaderContextBuilder().withFilePath(hfilePath).withFileSize(fileSize)</span>
<span class="source-line-no">194</span><span id="line-194"> .withFileSystem(wrapper.getHfs()).withInputStreamWrapper(wrapper).build();</span>
<span class="source-line-no">195</span><span id="line-195"> HFileInfo hfile = new HFileInfo(readerContext, conf);</span>
<span class="source-line-no">196</span><span id="line-196"> HFile.Reader reader = new HFilePreadReader(readerContext, hfile, cacheConfig, conf);</span>
<span class="source-line-no">197</span><span id="line-197"> hfile.initMetaAndIndex(reader);</span>
<span class="source-line-no">198</span><span id="line-198"> if (findMidKey) {</span>
<span class="source-line-no">199</span><span id="line-199"> Cell midkey = dataBlockIndexReader.midkey(reader);</span>
<span class="source-line-no">200</span><span id="line-200"> assertNotNull("Midkey should not be null", midkey);</span>
<span class="source-line-no">201</span><span id="line-201"> }</span>
<span class="source-line-no">202</span><span id="line-202"></span>
<span class="source-line-no">203</span><span id="line-203"> // Meta index.</span>
<span class="source-line-no">204</span><span id="line-204"> metaBlockIndexReader.readRootIndex(</span>
<span class="source-line-no">205</span><span id="line-205"> blockIter.nextBlockWithBlockType(BlockType.ROOT_INDEX).getByteStream(),</span>
<span class="source-line-no">206</span><span id="line-206"> trailer.getMetaIndexCount());</span>
<span class="source-line-no">207</span><span id="line-207"> // File info</span>
<span class="source-line-no">208</span><span id="line-208"> HFileInfo fileInfo = new HFileInfo();</span>
<span class="source-line-no">209</span><span id="line-209"> fileInfo.read(blockIter.nextBlockWithBlockType(BlockType.FILE_INFO).getByteStream());</span>
<span class="source-line-no">210</span><span id="line-210"> byte[] keyValueFormatVersion = fileInfo.get(HFileWriterImpl.KEY_VALUE_VERSION);</span>
<span class="source-line-no">211</span><span id="line-211"> boolean includeMemstoreTS =</span>
<span class="source-line-no">212</span><span id="line-212"> keyValueFormatVersion != null &amp;&amp; Bytes.toInt(keyValueFormatVersion) &gt; 0;</span>
<span class="source-line-no">213</span><span id="line-213"></span>
<span class="source-line-no">214</span><span id="line-214"> // Counters for the number of key/value pairs and the number of blocks</span>
<span class="source-line-no">215</span><span id="line-215"> int entriesRead = 0;</span>
<span class="source-line-no">216</span><span id="line-216"> int blocksRead = 0;</span>
<span class="source-line-no">217</span><span id="line-217"> long memstoreTS = 0;</span>
<span class="source-line-no">218</span><span id="line-218"></span>
<span class="source-line-no">219</span><span id="line-219"> // Scan blocks the way the reader would scan them</span>
<span class="source-line-no">220</span><span id="line-220"> fsdis.seek(0);</span>
<span class="source-line-no">221</span><span id="line-221"> long curBlockPos = 0;</span>
<span class="source-line-no">222</span><span id="line-222"> while (curBlockPos &lt;= trailer.getLastDataBlockOffset()) {</span>
<span class="source-line-no">223</span><span id="line-223"> HFileBlock block =</span>
<span class="source-line-no">224</span><span id="line-224"> blockReader.readBlockData(curBlockPos, -1, false, false, true).unpack(context, blockReader);</span>
<span class="source-line-no">225</span><span id="line-225"> assertEquals(BlockType.DATA, block.getBlockType());</span>
<span class="source-line-no">226</span><span id="line-226"> ByteBuff buf = block.getBufferWithoutHeader();</span>
<span class="source-line-no">227</span><span id="line-227"> int keyLen = -1;</span>
<span class="source-line-no">228</span><span id="line-228"> while (buf.hasRemaining()) {</span>
<span class="source-line-no">229</span><span id="line-229"></span>
<span class="source-line-no">230</span><span id="line-230"> keyLen = buf.getInt();</span>
<span class="source-line-no">231</span><span id="line-231"></span>
<span class="source-line-no">232</span><span id="line-232"> int valueLen = buf.getInt();</span>
<span class="source-line-no">233</span><span id="line-233"></span>
<span class="source-line-no">234</span><span id="line-234"> byte[] key = new byte[keyLen];</span>
<span class="source-line-no">235</span><span id="line-235"> buf.get(key);</span>
<span class="source-line-no">236</span><span id="line-236"></span>
<span class="source-line-no">237</span><span id="line-237"> byte[] value = new byte[valueLen];</span>
<span class="source-line-no">238</span><span id="line-238"> buf.get(value);</span>
<span class="source-line-no">239</span><span id="line-239"> byte[] tagValue = null;</span>
<span class="source-line-no">240</span><span id="line-240"> if (useTags) {</span>
<span class="source-line-no">241</span><span id="line-241"> int tagLen = ((buf.get() &amp; 0xff) &lt;&lt; 8) ^ (buf.get() &amp; 0xff);</span>
<span class="source-line-no">242</span><span id="line-242"> tagValue = new byte[tagLen];</span>
<span class="source-line-no">243</span><span id="line-243"> buf.get(tagValue);</span>
<span class="source-line-no">244</span><span id="line-244"> }</span>
<span class="source-line-no">245</span><span id="line-245"></span>
<span class="source-line-no">246</span><span id="line-246"> if (includeMemstoreTS) {</span>
<span class="source-line-no">247</span><span id="line-247"> ByteArrayInputStream byte_input = new ByteArrayInputStream(buf.array(),</span>
<span class="source-line-no">248</span><span id="line-248"> buf.arrayOffset() + buf.position(), buf.remaining());</span>
<span class="source-line-no">249</span><span id="line-249"> DataInputStream data_input = new DataInputStream(byte_input);</span>
<span class="source-line-no">250</span><span id="line-250"></span>
<span class="source-line-no">251</span><span id="line-251"> memstoreTS = WritableUtils.readVLong(data_input);</span>
<span class="source-line-no">252</span><span id="line-252"> buf.position(buf.position() + WritableUtils.getVIntSize(memstoreTS));</span>
<span class="source-line-no">253</span><span id="line-253"> }</span>
<span class="source-line-no">254</span><span id="line-254"></span>
<span class="source-line-no">255</span><span id="line-255"> // A brute-force check to see that all keys and values are correct.</span>
<span class="source-line-no">256</span><span id="line-256"> KeyValue kv = keyValues.get(entriesRead);</span>
<span class="source-line-no">257</span><span id="line-257"> assertTrue(Bytes.compareTo(key, kv.getKey()) == 0);</span>
<span class="source-line-no">258</span><span id="line-258"> assertTrue(Bytes.compareTo(value, 0, value.length, kv.getValueArray(), kv.getValueOffset(),</span>
<span class="source-line-no">259</span><span id="line-259"> kv.getValueLength()) == 0);</span>
<span class="source-line-no">260</span><span id="line-260"> if (useTags) {</span>
<span class="source-line-no">261</span><span id="line-261"> assertNotNull(tagValue);</span>
<span class="source-line-no">262</span><span id="line-262"> KeyValue tkv = kv;</span>
<span class="source-line-no">263</span><span id="line-263"> assertEquals(tagValue.length, tkv.getTagsLength());</span>
<span class="source-line-no">264</span><span id="line-264"> assertTrue(Bytes.compareTo(tagValue, 0, tagValue.length, tkv.getTagsArray(),</span>
<span class="source-line-no">265</span><span id="line-265"> tkv.getTagsOffset(), tkv.getTagsLength()) == 0);</span>
<span class="source-line-no">266</span><span id="line-266"> }</span>
<span class="source-line-no">267</span><span id="line-267"> ++entriesRead;</span>
<span class="source-line-no">268</span><span id="line-268"> }</span>
<span class="source-line-no">269</span><span id="line-269"> ++blocksRead;</span>
<span class="source-line-no">270</span><span id="line-270"> curBlockPos += block.getOnDiskSizeWithHeader();</span>
<span class="source-line-no">271</span><span id="line-271"> }</span>
<span class="source-line-no">272</span><span id="line-272"> LOG.info("Finished reading: entries=" + entriesRead + ", blocksRead=" + blocksRead);</span>
<span class="source-line-no">273</span><span id="line-273"> assertEquals(entryCount, entriesRead);</span>
<span class="source-line-no">274</span><span id="line-274"></span>
<span class="source-line-no">275</span><span id="line-275"> // Meta blocks. We can scan until the load-on-open data offset (which is</span>
<span class="source-line-no">276</span><span id="line-276"> // the root block index offset in version 2) because we are not testing</span>
<span class="source-line-no">277</span><span id="line-277"> // intermediate-level index blocks here.</span>
<span class="source-line-no">278</span><span id="line-278"></span>
<span class="source-line-no">279</span><span id="line-279"> int metaCounter = 0;</span>
<span class="source-line-no">280</span><span id="line-280"> while (fsdis.getPos() &lt; trailer.getLoadOnOpenDataOffset()) {</span>
<span class="source-line-no">281</span><span id="line-281"> LOG.info("Current offset: " + fsdis.getPos() + ", scanning until "</span>
<span class="source-line-no">282</span><span id="line-282"> + trailer.getLoadOnOpenDataOffset());</span>
<span class="source-line-no">283</span><span id="line-283"> HFileBlock block =</span>
<span class="source-line-no">284</span><span id="line-284"> blockReader.readBlockData(curBlockPos, -1, false, false, true).unpack(context, blockReader);</span>
<span class="source-line-no">285</span><span id="line-285"> assertEquals(BlockType.META, block.getBlockType());</span>
<span class="source-line-no">286</span><span id="line-286"> Text t = new Text();</span>
<span class="source-line-no">287</span><span id="line-287"> ByteBuff buf = block.getBufferWithoutHeader();</span>
<span class="source-line-no">288</span><span id="line-288"> if (Writables.getWritable(buf.array(), buf.arrayOffset(), buf.limit(), t) == null) {</span>
<span class="source-line-no">289</span><span id="line-289"> throw new IOException(</span>
<span class="source-line-no">290</span><span id="line-290"> "Failed to deserialize block " + this + " into a " + t.getClass().getSimpleName());</span>
<span class="source-line-no">291</span><span id="line-291"> }</span>
<span class="source-line-no">292</span><span id="line-292"> Text expectedText = (metaCounter == 0 ? new Text("Paris")</span>
<span class="source-line-no">293</span><span id="line-293"> : metaCounter == 1 ? new Text("Moscow")</span>
<span class="source-line-no">294</span><span id="line-294"> : new Text("Washington, D.C."));</span>
<span class="source-line-no">295</span><span id="line-295"> assertEquals(expectedText, t);</span>
<span class="source-line-no">296</span><span id="line-296"> LOG.info("Read meta block data: " + t);</span>
<span class="source-line-no">297</span><span id="line-297"> ++metaCounter;</span>
<span class="source-line-no">298</span><span id="line-298"> curBlockPos += block.getOnDiskSizeWithHeader();</span>
<span class="source-line-no">299</span><span id="line-299"> }</span>
<span class="source-line-no">300</span><span id="line-300"></span>
<span class="source-line-no">301</span><span id="line-301"> fsdis.close();</span>
<span class="source-line-no">302</span><span id="line-302"> reader.close();</span>
<span class="source-line-no">303</span><span id="line-303"> }</span>
<span class="source-line-no">304</span><span id="line-304">}</span>
</pre>
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