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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.encoding;</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.DataInputStream;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.DataOutputStream;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.nio.ByteBuffer;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.KeyValueUtil;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.PrivateCellUtil;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.nio.ByteBuff;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.util.ByteBufferUtils;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.util.ObjectIntPair;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34">/**</span> |
| <span class="source-line-no">035</span><span id="line-35"> * Compress using: - store size of common prefix - save column family once, it is same within HFile</span> |
| <span class="source-line-no">036</span><span id="line-36"> * - use integer compression for key, value and prefix (7-bit encoding) - use bits to avoid</span> |
| <span class="source-line-no">037</span><span id="line-37"> * duplication key length, value length and type if it same as previous - store in 3 bits length of</span> |
| <span class="source-line-no">038</span><span id="line-38"> * timestamp field - allow diff in timestamp instead of actual value Format: - 1 byte: flag - 1-5</span> |
| <span class="source-line-no">039</span><span id="line-39"> * bytes: key length (only if FLAG_SAME_KEY_LENGTH is not set in flag) - 1-5 bytes: value length</span> |
| <span class="source-line-no">040</span><span id="line-40"> * (only if FLAG_SAME_VALUE_LENGTH is not set in flag) - 1-5 bytes: prefix length - ... bytes: rest</span> |
| <span class="source-line-no">041</span><span id="line-41"> * of the row (if prefix length is small enough) - ... bytes: qualifier (or suffix depending on</span> |
| <span class="source-line-no">042</span><span id="line-42"> * prefix length) - 1-8 bytes: timestamp or diff - 1 byte: type (only if FLAG_SAME_TYPE is not set</span> |
| <span class="source-line-no">043</span><span id="line-43"> * in the flag) - ... bytes: value</span> |
| <span class="source-line-no">044</span><span id="line-44"> */</span> |
| <span class="source-line-no">045</span><span id="line-45">@InterfaceAudience.Private</span> |
| <span class="source-line-no">046</span><span id="line-46">public class DiffKeyDeltaEncoder extends BufferedDataBlockEncoder {</span> |
| <span class="source-line-no">047</span><span id="line-47"> static final int FLAG_SAME_KEY_LENGTH = 1;</span> |
| <span class="source-line-no">048</span><span id="line-48"> static final int FLAG_SAME_VALUE_LENGTH = 1 << 1;</span> |
| <span class="source-line-no">049</span><span id="line-49"> static final int FLAG_SAME_TYPE = 1 << 2;</span> |
| <span class="source-line-no">050</span><span id="line-50"> static final int FLAG_TIMESTAMP_IS_DIFF = 1 << 3;</span> |
| <span class="source-line-no">051</span><span id="line-51"> static final int MASK_TIMESTAMP_LENGTH = (1 << 4) | (1 << 5) | (1 << 6);</span> |
| <span class="source-line-no">052</span><span id="line-52"> static final int SHIFT_TIMESTAMP_LENGTH = 4;</span> |
| <span class="source-line-no">053</span><span id="line-53"> static final int FLAG_TIMESTAMP_SIGN = 1 << 7;</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> protected static class DiffCompressionState extends CompressionState {</span> |
| <span class="source-line-no">056</span><span id="line-56"> long timestamp;</span> |
| <span class="source-line-no">057</span><span id="line-57"> byte[] familyNameWithSize;</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> @Override</span> |
| <span class="source-line-no">060</span><span id="line-60"> protected void readTimestamp(ByteBuffer in) {</span> |
| <span class="source-line-no">061</span><span id="line-61"> timestamp = in.getLong();</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> @Override</span> |
| <span class="source-line-no">065</span><span id="line-65"> void copyFrom(CompressionState state) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> super.copyFrom(state);</span> |
| <span class="source-line-no">067</span><span id="line-67"> DiffCompressionState state2 = (DiffCompressionState) state;</span> |
| <span class="source-line-no">068</span><span id="line-68"> timestamp = state2.timestamp;</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> private void uncompressSingleKeyValue(DataInputStream source, ByteBuffer buffer,</span> |
| <span class="source-line-no">073</span><span id="line-73"> DiffCompressionState state) throws IOException, EncoderBufferTooSmallException {</span> |
| <span class="source-line-no">074</span><span id="line-74"> // read the column family at the beginning</span> |
| <span class="source-line-no">075</span><span id="line-75"> if (state.isFirst()) {</span> |
| <span class="source-line-no">076</span><span id="line-76"> state.familyLength = source.readByte();</span> |
| <span class="source-line-no">077</span><span id="line-77"> state.familyNameWithSize =</span> |
| <span class="source-line-no">078</span><span id="line-78"> new byte[(state.familyLength & 0xff) + KeyValue.FAMILY_LENGTH_SIZE];</span> |
| <span class="source-line-no">079</span><span id="line-79"> state.familyNameWithSize[0] = state.familyLength;</span> |
| <span class="source-line-no">080</span><span id="line-80"> int read =</span> |
| <span class="source-line-no">081</span><span id="line-81"> source.read(state.familyNameWithSize, KeyValue.FAMILY_LENGTH_SIZE, state.familyLength);</span> |
| <span class="source-line-no">082</span><span id="line-82"> assert read == state.familyLength;</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> // read flag</span> |
| <span class="source-line-no">086</span><span id="line-86"> byte flag = source.readByte();</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> // read key/value/common lengths</span> |
| <span class="source-line-no">089</span><span id="line-89"> int keyLength;</span> |
| <span class="source-line-no">090</span><span id="line-90"> int valueLength;</span> |
| <span class="source-line-no">091</span><span id="line-91"> if ((flag & FLAG_SAME_KEY_LENGTH) != 0) {</span> |
| <span class="source-line-no">092</span><span id="line-92"> keyLength = state.keyLength;</span> |
| <span class="source-line-no">093</span><span id="line-93"> } else {</span> |
| <span class="source-line-no">094</span><span id="line-94"> keyLength = ByteBufferUtils.readCompressedInt(source);</span> |
| <span class="source-line-no">095</span><span id="line-95"> }</span> |
| <span class="source-line-no">096</span><span id="line-96"> if ((flag & FLAG_SAME_VALUE_LENGTH) != 0) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> valueLength = state.valueLength;</span> |
| <span class="source-line-no">098</span><span id="line-98"> } else {</span> |
| <span class="source-line-no">099</span><span id="line-99"> valueLength = ByteBufferUtils.readCompressedInt(source);</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"> int commonPrefix = ByteBufferUtils.readCompressedInt(source);</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> // create KeyValue buffer and fill it prefix</span> |
| <span class="source-line-no">104</span><span id="line-104"> int keyOffset = buffer.position();</span> |
| <span class="source-line-no">105</span><span id="line-105"> ensureSpace(buffer, keyLength + valueLength + KeyValue.ROW_OFFSET);</span> |
| <span class="source-line-no">106</span><span id="line-106"> buffer.putInt(keyLength);</span> |
| <span class="source-line-no">107</span><span id="line-107"> buffer.putInt(valueLength);</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> // copy common from previous key</span> |
| <span class="source-line-no">110</span><span id="line-110"> if (commonPrefix > 0) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> ByteBufferUtils.copyFromBufferToBuffer(buffer, buffer, state.prevOffset + KeyValue.ROW_OFFSET,</span> |
| <span class="source-line-no">112</span><span id="line-112"> commonPrefix);</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"></span> |
| <span class="source-line-no">115</span><span id="line-115"> // copy the rest of the key from the buffer</span> |
| <span class="source-line-no">116</span><span id="line-116"> int keyRestLength;</span> |
| <span class="source-line-no">117</span><span id="line-117"> if (state.isFirst() || commonPrefix < state.rowLength + KeyValue.ROW_LENGTH_SIZE) {</span> |
| <span class="source-line-no">118</span><span id="line-118"> // omit the family part of the key, it is always the same</span> |
| <span class="source-line-no">119</span><span id="line-119"> short rowLength;</span> |
| <span class="source-line-no">120</span><span id="line-120"> int rowRestLength;</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> // check length of row</span> |
| <span class="source-line-no">123</span><span id="line-123"> if (commonPrefix < KeyValue.ROW_LENGTH_SIZE) {</span> |
| <span class="source-line-no">124</span><span id="line-124"> // not yet copied, do it now</span> |
| <span class="source-line-no">125</span><span id="line-125"> ByteBufferUtils.copyFromStreamToBuffer(buffer, source,</span> |
| <span class="source-line-no">126</span><span id="line-126"> KeyValue.ROW_LENGTH_SIZE - commonPrefix);</span> |
| <span class="source-line-no">127</span><span id="line-127"> ByteBufferUtils.skip(buffer, -KeyValue.ROW_LENGTH_SIZE);</span> |
| <span class="source-line-no">128</span><span id="line-128"> rowLength = buffer.getShort();</span> |
| <span class="source-line-no">129</span><span id="line-129"> rowRestLength = rowLength;</span> |
| <span class="source-line-no">130</span><span id="line-130"> } else {</span> |
| <span class="source-line-no">131</span><span id="line-131"> // already in buffer, just read it</span> |
| <span class="source-line-no">132</span><span id="line-132"> rowLength = buffer.getShort(keyOffset + KeyValue.ROW_OFFSET);</span> |
| <span class="source-line-no">133</span><span id="line-133"> rowRestLength = rowLength + KeyValue.ROW_LENGTH_SIZE - commonPrefix;</span> |
| <span class="source-line-no">134</span><span id="line-134"> }</span> |
| <span class="source-line-no">135</span><span id="line-135"></span> |
| <span class="source-line-no">136</span><span id="line-136"> // copy the rest of row</span> |
| <span class="source-line-no">137</span><span id="line-137"> ByteBufferUtils.copyFromStreamToBuffer(buffer, source, rowRestLength);</span> |
| <span class="source-line-no">138</span><span id="line-138"> state.rowLength = rowLength;</span> |
| <span class="source-line-no">139</span><span id="line-139"></span> |
| <span class="source-line-no">140</span><span id="line-140"> // copy the column family</span> |
| <span class="source-line-no">141</span><span id="line-141"> buffer.put(state.familyNameWithSize);</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> keyRestLength = keyLength - rowLength - state.familyNameWithSize.length</span> |
| <span class="source-line-no">144</span><span id="line-144"> - (KeyValue.ROW_LENGTH_SIZE + KeyValue.TIMESTAMP_TYPE_SIZE);</span> |
| <span class="source-line-no">145</span><span id="line-145"> } else {</span> |
| <span class="source-line-no">146</span><span id="line-146"> // prevRowWithSizeLength is the same as on previous row</span> |
| <span class="source-line-no">147</span><span id="line-147"> keyRestLength = keyLength - commonPrefix - KeyValue.TIMESTAMP_TYPE_SIZE;</span> |
| <span class="source-line-no">148</span><span id="line-148"> }</span> |
| <span class="source-line-no">149</span><span id="line-149"> // copy the rest of the key, after column family -> column qualifier</span> |
| <span class="source-line-no">150</span><span id="line-150"> ByteBufferUtils.copyFromStreamToBuffer(buffer, source, keyRestLength);</span> |
| <span class="source-line-no">151</span><span id="line-151"></span> |
| <span class="source-line-no">152</span><span id="line-152"> // handle timestamp</span> |
| <span class="source-line-no">153</span><span id="line-153"> int timestampFitsInBytes = ((flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH) + 1;</span> |
| <span class="source-line-no">154</span><span id="line-154"> long timestamp = ByteBufferUtils.readLong(source, timestampFitsInBytes);</span> |
| <span class="source-line-no">155</span><span id="line-155"> if ((flag & FLAG_TIMESTAMP_SIGN) != 0) {</span> |
| <span class="source-line-no">156</span><span id="line-156"> timestamp = -timestamp;</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 ((flag & FLAG_TIMESTAMP_IS_DIFF) != 0) {</span> |
| <span class="source-line-no">159</span><span id="line-159"> timestamp = state.timestamp - timestamp;</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"> buffer.putLong(timestamp);</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> // copy the type field</span> |
| <span class="source-line-no">164</span><span id="line-164"> byte type;</span> |
| <span class="source-line-no">165</span><span id="line-165"> if ((flag & FLAG_SAME_TYPE) != 0) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> type = state.type;</span> |
| <span class="source-line-no">167</span><span id="line-167"> } else {</span> |
| <span class="source-line-no">168</span><span id="line-168"> type = source.readByte();</span> |
| <span class="source-line-no">169</span><span id="line-169"> }</span> |
| <span class="source-line-no">170</span><span id="line-170"> buffer.put(type);</span> |
| <span class="source-line-no">171</span><span id="line-171"></span> |
| <span class="source-line-no">172</span><span id="line-172"> // copy value part</span> |
| <span class="source-line-no">173</span><span id="line-173"> ByteBufferUtils.copyFromStreamToBuffer(buffer, source, valueLength);</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> state.keyLength = keyLength;</span> |
| <span class="source-line-no">176</span><span id="line-176"> state.valueLength = valueLength;</span> |
| <span class="source-line-no">177</span><span id="line-177"> state.prevOffset = keyOffset;</span> |
| <span class="source-line-no">178</span><span id="line-178"> state.timestamp = timestamp;</span> |
| <span class="source-line-no">179</span><span id="line-179"> state.type = type;</span> |
| <span class="source-line-no">180</span><span id="line-180"> // state.qualifier is unused</span> |
| <span class="source-line-no">181</span><span id="line-181"> }</span> |
| <span class="source-line-no">182</span><span id="line-182"></span> |
| <span class="source-line-no">183</span><span id="line-183"> @Override</span> |
| <span class="source-line-no">184</span><span id="line-184"> public int internalEncode(ExtendedCell cell, HFileBlockDefaultEncodingContext encodingContext,</span> |
| <span class="source-line-no">185</span><span id="line-185"> DataOutputStream out) throws IOException {</span> |
| <span class="source-line-no">186</span><span id="line-186"> EncodingState state = encodingContext.getEncodingState();</span> |
| <span class="source-line-no">187</span><span id="line-187"> int size = compressSingleKeyValue(out, cell, state.prevCell);</span> |
| <span class="source-line-no">188</span><span id="line-188"> size += afterEncodingKeyValue(cell, out, encodingContext);</span> |
| <span class="source-line-no">189</span><span id="line-189"> state.prevCell = cell;</span> |
| <span class="source-line-no">190</span><span id="line-190"> return size;</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"> private int compressSingleKeyValue(DataOutputStream out, ExtendedCell cell, ExtendedCell prevCell)</span> |
| <span class="source-line-no">194</span><span id="line-194"> throws IOException {</span> |
| <span class="source-line-no">195</span><span id="line-195"> int flag = 0; // Do not use more bits that can fit into a byte</span> |
| <span class="source-line-no">196</span><span id="line-196"> int kLength = KeyValueUtil.keyLength(cell);</span> |
| <span class="source-line-no">197</span><span id="line-197"> int vLength = cell.getValueLength();</span> |
| <span class="source-line-no">198</span><span id="line-198"></span> |
| <span class="source-line-no">199</span><span id="line-199"> long timestamp;</span> |
| <span class="source-line-no">200</span><span id="line-200"> long diffTimestamp = 0;</span> |
| <span class="source-line-no">201</span><span id="line-201"> int diffTimestampFitsInBytes = 0;</span> |
| <span class="source-line-no">202</span><span id="line-202"> int timestampFitsInBytes;</span> |
| <span class="source-line-no">203</span><span id="line-203"> int commonPrefix = 0;</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> if (prevCell == null) {</span> |
| <span class="source-line-no">206</span><span id="line-206"> timestamp = cell.getTimestamp();</span> |
| <span class="source-line-no">207</span><span id="line-207"> if (timestamp < 0) {</span> |
| <span class="source-line-no">208</span><span id="line-208"> flag |= FLAG_TIMESTAMP_SIGN;</span> |
| <span class="source-line-no">209</span><span id="line-209"> timestamp = -timestamp;</span> |
| <span class="source-line-no">210</span><span id="line-210"> }</span> |
| <span class="source-line-no">211</span><span id="line-211"> timestampFitsInBytes = ByteBufferUtils.longFitsIn(timestamp);</span> |
| <span class="source-line-no">212</span><span id="line-212"> flag |= (timestampFitsInBytes - 1) << SHIFT_TIMESTAMP_LENGTH;</span> |
| <span class="source-line-no">213</span><span id="line-213"> // put column family</span> |
| <span class="source-line-no">214</span><span id="line-214"> byte familyLength = cell.getFamilyLength();</span> |
| <span class="source-line-no">215</span><span id="line-215"> out.write(familyLength);</span> |
| <span class="source-line-no">216</span><span id="line-216"> PrivateCellUtil.writeFamily(out, cell, familyLength);</span> |
| <span class="source-line-no">217</span><span id="line-217"> } else {</span> |
| <span class="source-line-no">218</span><span id="line-218"> // Finding common prefix</span> |
| <span class="source-line-no">219</span><span id="line-219"> int preKeyLength = KeyValueUtil.keyLength(prevCell);</span> |
| <span class="source-line-no">220</span><span id="line-220"> commonPrefix = PrivateCellUtil.findCommonPrefixInFlatKey(cell, prevCell, true, false);</span> |
| <span class="source-line-no">221</span><span id="line-221"> if (kLength == preKeyLength) {</span> |
| <span class="source-line-no">222</span><span id="line-222"> flag |= FLAG_SAME_KEY_LENGTH;</span> |
| <span class="source-line-no">223</span><span id="line-223"> }</span> |
| <span class="source-line-no">224</span><span id="line-224"> if (vLength == prevCell.getValueLength()) {</span> |
| <span class="source-line-no">225</span><span id="line-225"> flag |= FLAG_SAME_VALUE_LENGTH;</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> if (cell.getTypeByte() == prevCell.getTypeByte()) {</span> |
| <span class="source-line-no">228</span><span id="line-228"> flag |= FLAG_SAME_TYPE;</span> |
| <span class="source-line-no">229</span><span id="line-229"> }</span> |
| <span class="source-line-no">230</span><span id="line-230"> // don't compress timestamp and type using prefix encode timestamp</span> |
| <span class="source-line-no">231</span><span id="line-231"> timestamp = cell.getTimestamp();</span> |
| <span class="source-line-no">232</span><span id="line-232"> diffTimestamp = prevCell.getTimestamp() - timestamp;</span> |
| <span class="source-line-no">233</span><span id="line-233"> boolean negativeTimestamp = timestamp < 0;</span> |
| <span class="source-line-no">234</span><span id="line-234"> if (negativeTimestamp) {</span> |
| <span class="source-line-no">235</span><span id="line-235"> timestamp = -timestamp;</span> |
| <span class="source-line-no">236</span><span id="line-236"> }</span> |
| <span class="source-line-no">237</span><span id="line-237"> timestampFitsInBytes = ByteBufferUtils.longFitsIn(timestamp);</span> |
| <span class="source-line-no">238</span><span id="line-238"> boolean minusDiffTimestamp = diffTimestamp < 0;</span> |
| <span class="source-line-no">239</span><span id="line-239"> if (minusDiffTimestamp) {</span> |
| <span class="source-line-no">240</span><span id="line-240"> diffTimestamp = -diffTimestamp;</span> |
| <span class="source-line-no">241</span><span id="line-241"> }</span> |
| <span class="source-line-no">242</span><span id="line-242"> diffTimestampFitsInBytes = ByteBufferUtils.longFitsIn(diffTimestamp);</span> |
| <span class="source-line-no">243</span><span id="line-243"> if (diffTimestampFitsInBytes < timestampFitsInBytes) {</span> |
| <span class="source-line-no">244</span><span id="line-244"> flag |= (diffTimestampFitsInBytes - 1) << SHIFT_TIMESTAMP_LENGTH;</span> |
| <span class="source-line-no">245</span><span id="line-245"> flag |= FLAG_TIMESTAMP_IS_DIFF;</span> |
| <span class="source-line-no">246</span><span id="line-246"> if (minusDiffTimestamp) {</span> |
| <span class="source-line-no">247</span><span id="line-247"> flag |= FLAG_TIMESTAMP_SIGN;</span> |
| <span class="source-line-no">248</span><span id="line-248"> }</span> |
| <span class="source-line-no">249</span><span id="line-249"> } else {</span> |
| <span class="source-line-no">250</span><span id="line-250"> flag |= (timestampFitsInBytes - 1) << SHIFT_TIMESTAMP_LENGTH;</span> |
| <span class="source-line-no">251</span><span id="line-251"> if (negativeTimestamp) {</span> |
| <span class="source-line-no">252</span><span id="line-252"> flag |= FLAG_TIMESTAMP_SIGN;</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"> }</span> |
| <span class="source-line-no">256</span><span id="line-256"> out.write(flag);</span> |
| <span class="source-line-no">257</span><span id="line-257"> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {</span> |
| <span class="source-line-no">258</span><span id="line-258"> ByteBufferUtils.putCompressedInt(out, kLength);</span> |
| <span class="source-line-no">259</span><span id="line-259"> }</span> |
| <span class="source-line-no">260</span><span id="line-260"> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {</span> |
| <span class="source-line-no">261</span><span id="line-261"> ByteBufferUtils.putCompressedInt(out, vLength);</span> |
| <span class="source-line-no">262</span><span id="line-262"> }</span> |
| <span class="source-line-no">263</span><span id="line-263"> ByteBufferUtils.putCompressedInt(out, commonPrefix);</span> |
| <span class="source-line-no">264</span><span id="line-264"> short rLen = cell.getRowLength();</span> |
| <span class="source-line-no">265</span><span id="line-265"> if (commonPrefix < rLen + KeyValue.ROW_LENGTH_SIZE) {</span> |
| <span class="source-line-no">266</span><span id="line-266"> // Previous and current rows are different. Copy the differing part of</span> |
| <span class="source-line-no">267</span><span id="line-267"> // the row, skip the column family, and copy the qualifier.</span> |
| <span class="source-line-no">268</span><span id="line-268"> PrivateCellUtil.writeRowKeyExcludingCommon(cell, rLen, commonPrefix, out);</span> |
| <span class="source-line-no">269</span><span id="line-269"> PrivateCellUtil.writeQualifier(out, cell, cell.getQualifierLength());</span> |
| <span class="source-line-no">270</span><span id="line-270"> } else {</span> |
| <span class="source-line-no">271</span><span id="line-271"> // The common part includes the whole row. As the column family is the</span> |
| <span class="source-line-no">272</span><span id="line-272"> // same across the whole file, it will automatically be included in the</span> |
| <span class="source-line-no">273</span><span id="line-273"> // common prefix, so we need not special-case it here.</span> |
| <span class="source-line-no">274</span><span id="line-274"> // What we write here is the non common part of the qualifier</span> |
| <span class="source-line-no">275</span><span id="line-275"> int commonQualPrefix = commonPrefix - (rLen + KeyValue.ROW_LENGTH_SIZE)</span> |
| <span class="source-line-no">276</span><span id="line-276"> - (cell.getFamilyLength() + KeyValue.FAMILY_LENGTH_SIZE);</span> |
| <span class="source-line-no">277</span><span id="line-277"> PrivateCellUtil.writeQualifierSkippingBytes(out, cell, cell.getQualifierLength(),</span> |
| <span class="source-line-no">278</span><span id="line-278"> commonQualPrefix);</span> |
| <span class="source-line-no">279</span><span id="line-279"> }</span> |
| <span class="source-line-no">280</span><span id="line-280"> if ((flag & FLAG_TIMESTAMP_IS_DIFF) == 0) {</span> |
| <span class="source-line-no">281</span><span id="line-281"> ByteBufferUtils.putLong(out, timestamp, timestampFitsInBytes);</span> |
| <span class="source-line-no">282</span><span id="line-282"> } else {</span> |
| <span class="source-line-no">283</span><span id="line-283"> ByteBufferUtils.putLong(out, diffTimestamp, diffTimestampFitsInBytes);</span> |
| <span class="source-line-no">284</span><span id="line-284"> }</span> |
| <span class="source-line-no">285</span><span id="line-285"></span> |
| <span class="source-line-no">286</span><span id="line-286"> if ((flag & FLAG_SAME_TYPE) == 0) {</span> |
| <span class="source-line-no">287</span><span id="line-287"> out.write(cell.getTypeByte());</span> |
| <span class="source-line-no">288</span><span id="line-288"> }</span> |
| <span class="source-line-no">289</span><span id="line-289"> PrivateCellUtil.writeValue(out, cell, vLength);</span> |
| <span class="source-line-no">290</span><span id="line-290"> return kLength + vLength + KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE;</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> |
| <span class="source-line-no">293</span><span id="line-293"> @Override</span> |
| <span class="source-line-no">294</span><span id="line-294"> public ExtendedCell getFirstKeyCellInBlock(ByteBuff block) {</span> |
| <span class="source-line-no">295</span><span id="line-295"> block.mark();</span> |
| <span class="source-line-no">296</span><span id="line-296"> block.position(Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">297</span><span id="line-297"> byte familyLength = block.get();</span> |
| <span class="source-line-no">298</span><span id="line-298"> block.skip(familyLength);</span> |
| <span class="source-line-no">299</span><span id="line-299"> byte flag = block.get();</span> |
| <span class="source-line-no">300</span><span id="line-300"> int keyLength = ByteBuff.readCompressedInt(block);</span> |
| <span class="source-line-no">301</span><span id="line-301"> // TODO : See if we can avoid these reads as the read values are not getting used</span> |
| <span class="source-line-no">302</span><span id="line-302"> ByteBuff.readCompressedInt(block); // valueLength</span> |
| <span class="source-line-no">303</span><span id="line-303"> ByteBuff.readCompressedInt(block); // commonLength</span> |
| <span class="source-line-no">304</span><span id="line-304"> ByteBuffer result = ByteBuffer.allocate(keyLength);</span> |
| <span class="source-line-no">305</span><span id="line-305"></span> |
| <span class="source-line-no">306</span><span id="line-306"> // copy row</span> |
| <span class="source-line-no">307</span><span id="line-307"> assert !result.isDirect();</span> |
| <span class="source-line-no">308</span><span id="line-308"> int pos = result.arrayOffset();</span> |
| <span class="source-line-no">309</span><span id="line-309"> block.get(result.array(), pos, Bytes.SIZEOF_SHORT);</span> |
| <span class="source-line-no">310</span><span id="line-310"> pos += Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">311</span><span id="line-311"> short rowLength = result.getShort();</span> |
| <span class="source-line-no">312</span><span id="line-312"> block.get(result.array(), pos, rowLength);</span> |
| <span class="source-line-no">313</span><span id="line-313"> pos += rowLength;</span> |
| <span class="source-line-no">314</span><span id="line-314"></span> |
| <span class="source-line-no">315</span><span id="line-315"> // copy family</span> |
| <span class="source-line-no">316</span><span id="line-316"> int savePosition = block.position();</span> |
| <span class="source-line-no">317</span><span id="line-317"> block.position(Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">318</span><span id="line-318"> block.get(result.array(), pos, familyLength + Bytes.SIZEOF_BYTE);</span> |
| <span class="source-line-no">319</span><span id="line-319"> pos += familyLength + Bytes.SIZEOF_BYTE;</span> |
| <span class="source-line-no">320</span><span id="line-320"></span> |
| <span class="source-line-no">321</span><span id="line-321"> // copy qualifier</span> |
| <span class="source-line-no">322</span><span id="line-322"> block.position(savePosition);</span> |
| <span class="source-line-no">323</span><span id="line-323"> int qualifierLength = keyLength - pos + result.arrayOffset() - KeyValue.TIMESTAMP_TYPE_SIZE;</span> |
| <span class="source-line-no">324</span><span id="line-324"> block.get(result.array(), pos, qualifierLength);</span> |
| <span class="source-line-no">325</span><span id="line-325"> pos += qualifierLength;</span> |
| <span class="source-line-no">326</span><span id="line-326"></span> |
| <span class="source-line-no">327</span><span id="line-327"> // copy the timestamp and type</span> |
| <span class="source-line-no">328</span><span id="line-328"> int timestampFitInBytes = ((flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH) + 1;</span> |
| <span class="source-line-no">329</span><span id="line-329"> long timestamp = ByteBuff.readLong(block, timestampFitInBytes);</span> |
| <span class="source-line-no">330</span><span id="line-330"> if ((flag & FLAG_TIMESTAMP_SIGN) != 0) {</span> |
| <span class="source-line-no">331</span><span id="line-331"> timestamp = -timestamp;</span> |
| <span class="source-line-no">332</span><span id="line-332"> }</span> |
| <span class="source-line-no">333</span><span id="line-333"> result.putLong(pos, timestamp);</span> |
| <span class="source-line-no">334</span><span id="line-334"> pos += Bytes.SIZEOF_LONG;</span> |
| <span class="source-line-no">335</span><span id="line-335"> block.get(result.array(), pos, Bytes.SIZEOF_BYTE);</span> |
| <span class="source-line-no">336</span><span id="line-336"></span> |
| <span class="source-line-no">337</span><span id="line-337"> block.reset();</span> |
| <span class="source-line-no">338</span><span id="line-338"> // The result is already a BB. So always we will create a KeyOnlyKv.</span> |
| <span class="source-line-no">339</span><span id="line-339"> return new KeyValue.KeyOnlyKeyValue(result.array(), 0, keyLength);</span> |
| <span class="source-line-no">340</span><span id="line-340"> }</span> |
| <span class="source-line-no">341</span><span id="line-341"></span> |
| <span class="source-line-no">342</span><span id="line-342"> @Override</span> |
| <span class="source-line-no">343</span><span id="line-343"> public String toString() {</span> |
| <span class="source-line-no">344</span><span id="line-344"> return DiffKeyDeltaEncoder.class.getSimpleName();</span> |
| <span class="source-line-no">345</span><span id="line-345"> }</span> |
| <span class="source-line-no">346</span><span id="line-346"></span> |
| <span class="source-line-no">347</span><span id="line-347"> protected static class DiffSeekerState extends SeekerState {</span> |
| <span class="source-line-no">348</span><span id="line-348"></span> |
| <span class="source-line-no">349</span><span id="line-349"> private int rowLengthWithSize;</span> |
| <span class="source-line-no">350</span><span id="line-350"> private long timestamp;</span> |
| <span class="source-line-no">351</span><span id="line-351"></span> |
| <span class="source-line-no">352</span><span id="line-352"> public DiffSeekerState(ObjectIntPair<ByteBuffer> tmpPair, boolean includeTags) {</span> |
| <span class="source-line-no">353</span><span id="line-353"> super(tmpPair, includeTags);</span> |
| <span class="source-line-no">354</span><span id="line-354"> }</span> |
| <span class="source-line-no">355</span><span id="line-355"></span> |
| <span class="source-line-no">356</span><span id="line-356"> @Override</span> |
| <span class="source-line-no">357</span><span id="line-357"> protected void copyFromNext(SeekerState that) {</span> |
| <span class="source-line-no">358</span><span id="line-358"> super.copyFromNext(that);</span> |
| <span class="source-line-no">359</span><span id="line-359"> DiffSeekerState other = (DiffSeekerState) that;</span> |
| <span class="source-line-no">360</span><span id="line-360"> rowLengthWithSize = other.rowLengthWithSize;</span> |
| <span class="source-line-no">361</span><span id="line-361"> timestamp = other.timestamp;</span> |
| <span class="source-line-no">362</span><span id="line-362"> }</span> |
| <span class="source-line-no">363</span><span id="line-363"> }</span> |
| <span class="source-line-no">364</span><span id="line-364"></span> |
| <span class="source-line-no">365</span><span id="line-365"> @Override</span> |
| <span class="source-line-no">366</span><span id="line-366"> public EncodedSeeker createSeeker(HFileBlockDecodingContext decodingCtx) {</span> |
| <span class="source-line-no">367</span><span id="line-367"> return new DiffSeekerStateBufferedEncodedSeeker(decodingCtx);</span> |
| <span class="source-line-no">368</span><span id="line-368"> }</span> |
| <span class="source-line-no">369</span><span id="line-369"></span> |
| <span class="source-line-no">370</span><span id="line-370"> @Override</span> |
| <span class="source-line-no">371</span><span id="line-371"> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,</span> |
| <span class="source-line-no">372</span><span id="line-372"> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {</span> |
| <span class="source-line-no">373</span><span id="line-373"> int decompressedSize = source.readInt();</span> |
| <span class="source-line-no">374</span><span id="line-374"> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + allocateHeaderLength);</span> |
| <span class="source-line-no">375</span><span id="line-375"> buffer.position(allocateHeaderLength);</span> |
| <span class="source-line-no">376</span><span id="line-376"> DiffCompressionState state = new DiffCompressionState();</span> |
| <span class="source-line-no">377</span><span id="line-377"> while (source.available() > skipLastBytes) {</span> |
| <span class="source-line-no">378</span><span id="line-378"> uncompressSingleKeyValue(source, buffer, state);</span> |
| <span class="source-line-no">379</span><span id="line-379"> afterDecodingKeyValue(source, buffer, decodingCtx);</span> |
| <span class="source-line-no">380</span><span id="line-380"> }</span> |
| <span class="source-line-no">381</span><span id="line-381"></span> |
| <span class="source-line-no">382</span><span id="line-382"> if (source.available() != skipLastBytes) {</span> |
| <span class="source-line-no">383</span><span id="line-383"> throw new IllegalStateException("Read too much bytes.");</span> |
| <span class="source-line-no">384</span><span id="line-384"> }</span> |
| <span class="source-line-no">385</span><span id="line-385"></span> |
| <span class="source-line-no">386</span><span id="line-386"> return buffer;</span> |
| <span class="source-line-no">387</span><span id="line-387"> }</span> |
| <span class="source-line-no">388</span><span id="line-388"></span> |
| <span class="source-line-no">389</span><span id="line-389"> private static class DiffSeekerStateBufferedEncodedSeeker</span> |
| <span class="source-line-no">390</span><span id="line-390"> extends BufferedEncodedSeeker<DiffSeekerState> {</span> |
| <span class="source-line-no">391</span><span id="line-391"> private byte[] familyNameWithSize;</span> |
| <span class="source-line-no">392</span><span id="line-392"> private static final int TIMESTAMP_WITH_TYPE_LENGTH = Bytes.SIZEOF_LONG + Bytes.SIZEOF_BYTE;</span> |
| <span class="source-line-no">393</span><span id="line-393"></span> |
| <span class="source-line-no">394</span><span id="line-394"> private DiffSeekerStateBufferedEncodedSeeker(HFileBlockDecodingContext decodingCtx) {</span> |
| <span class="source-line-no">395</span><span id="line-395"> super(decodingCtx);</span> |
| <span class="source-line-no">396</span><span id="line-396"> }</span> |
| <span class="source-line-no">397</span><span id="line-397"></span> |
| <span class="source-line-no">398</span><span id="line-398"> private void decode(boolean isFirst) {</span> |
| <span class="source-line-no">399</span><span id="line-399"> byte flag = currentBuffer.get();</span> |
| <span class="source-line-no">400</span><span id="line-400"> byte type = 0;</span> |
| <span class="source-line-no">401</span><span id="line-401"> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {</span> |
| <span class="source-line-no">402</span><span id="line-402"> if (!isFirst) {</span> |
| <span class="source-line-no">403</span><span id="line-403"> type = current.keyBuffer[current.keyLength - Bytes.SIZEOF_BYTE];</span> |
| <span class="source-line-no">404</span><span id="line-404"> }</span> |
| <span class="source-line-no">405</span><span id="line-405"> current.keyLength = ByteBuff.readCompressedInt(currentBuffer);</span> |
| <span class="source-line-no">406</span><span id="line-406"> }</span> |
| <span class="source-line-no">407</span><span id="line-407"> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {</span> |
| <span class="source-line-no">408</span><span id="line-408"> current.valueLength = ByteBuff.readCompressedInt(currentBuffer);</span> |
| <span class="source-line-no">409</span><span id="line-409"> }</span> |
| <span class="source-line-no">410</span><span id="line-410"> current.lastCommonPrefix = ByteBuff.readCompressedInt(currentBuffer);</span> |
| <span class="source-line-no">411</span><span id="line-411"></span> |
| <span class="source-line-no">412</span><span id="line-412"> current.ensureSpaceForKey();</span> |
| <span class="source-line-no">413</span><span id="line-413"></span> |
| <span class="source-line-no">414</span><span id="line-414"> if (current.lastCommonPrefix < Bytes.SIZEOF_SHORT) {</span> |
| <span class="source-line-no">415</span><span id="line-415"> // length of row is different, copy everything except family</span> |
| <span class="source-line-no">416</span><span id="line-416"></span> |
| <span class="source-line-no">417</span><span id="line-417"> // copy the row size</span> |
| <span class="source-line-no">418</span><span id="line-418"> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,</span> |
| <span class="source-line-no">419</span><span id="line-419"> Bytes.SIZEOF_SHORT - current.lastCommonPrefix);</span> |
| <span class="source-line-no">420</span><span id="line-420"> current.rowLengthWithSize = Bytes.toShort(current.keyBuffer, 0) + Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">421</span><span id="line-421"></span> |
| <span class="source-line-no">422</span><span id="line-422"> // copy the rest of row</span> |
| <span class="source-line-no">423</span><span id="line-423"> currentBuffer.get(current.keyBuffer, Bytes.SIZEOF_SHORT,</span> |
| <span class="source-line-no">424</span><span id="line-424"> current.rowLengthWithSize - Bytes.SIZEOF_SHORT);</span> |
| <span class="source-line-no">425</span><span id="line-425"></span> |
| <span class="source-line-no">426</span><span id="line-426"> // copy the column family</span> |
| <span class="source-line-no">427</span><span id="line-427"> System.arraycopy(familyNameWithSize, 0, current.keyBuffer, current.rowLengthWithSize,</span> |
| <span class="source-line-no">428</span><span id="line-428"> familyNameWithSize.length);</span> |
| <span class="source-line-no">429</span><span id="line-429"></span> |
| <span class="source-line-no">430</span><span id="line-430"> // copy the qualifier</span> |
| <span class="source-line-no">431</span><span id="line-431"> currentBuffer.get(current.keyBuffer, current.rowLengthWithSize + familyNameWithSize.length,</span> |
| <span class="source-line-no">432</span><span id="line-432"> current.keyLength - current.rowLengthWithSize - familyNameWithSize.length</span> |
| <span class="source-line-no">433</span><span id="line-433"> - TIMESTAMP_WITH_TYPE_LENGTH);</span> |
| <span class="source-line-no">434</span><span id="line-434"> } else if (current.lastCommonPrefix < current.rowLengthWithSize) {</span> |
| <span class="source-line-no">435</span><span id="line-435"> // we have to copy part of row and qualifier,</span> |
| <span class="source-line-no">436</span><span id="line-436"> // but column family is in right place</span> |
| <span class="source-line-no">437</span><span id="line-437"></span> |
| <span class="source-line-no">438</span><span id="line-438"> // before column family (rest of row)</span> |
| <span class="source-line-no">439</span><span id="line-439"> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,</span> |
| <span class="source-line-no">440</span><span id="line-440"> current.rowLengthWithSize - current.lastCommonPrefix);</span> |
| <span class="source-line-no">441</span><span id="line-441"></span> |
| <span class="source-line-no">442</span><span id="line-442"> // after column family (qualifier)</span> |
| <span class="source-line-no">443</span><span id="line-443"> currentBuffer.get(current.keyBuffer, current.rowLengthWithSize + familyNameWithSize.length,</span> |
| <span class="source-line-no">444</span><span id="line-444"> current.keyLength - current.rowLengthWithSize - familyNameWithSize.length</span> |
| <span class="source-line-no">445</span><span id="line-445"> - TIMESTAMP_WITH_TYPE_LENGTH);</span> |
| <span class="source-line-no">446</span><span id="line-446"> } else {</span> |
| <span class="source-line-no">447</span><span id="line-447"> // copy just the ending</span> |
| <span class="source-line-no">448</span><span id="line-448"> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,</span> |
| <span class="source-line-no">449</span><span id="line-449"> current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH - current.lastCommonPrefix);</span> |
| <span class="source-line-no">450</span><span id="line-450"> }</span> |
| <span class="source-line-no">451</span><span id="line-451"></span> |
| <span class="source-line-no">452</span><span id="line-452"> // timestamp</span> |
| <span class="source-line-no">453</span><span id="line-453"> int pos = current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH;</span> |
| <span class="source-line-no">454</span><span id="line-454"> int timestampFitInBytes = 1 + ((flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH);</span> |
| <span class="source-line-no">455</span><span id="line-455"> long timestampOrDiff = ByteBuff.readLong(currentBuffer, timestampFitInBytes);</span> |
| <span class="source-line-no">456</span><span id="line-456"> if ((flag & FLAG_TIMESTAMP_SIGN) != 0) {</span> |
| <span class="source-line-no">457</span><span id="line-457"> timestampOrDiff = -timestampOrDiff;</span> |
| <span class="source-line-no">458</span><span id="line-458"> }</span> |
| <span class="source-line-no">459</span><span id="line-459"> if ((flag & FLAG_TIMESTAMP_IS_DIFF) == 0) { // it is timestamp</span> |
| <span class="source-line-no">460</span><span id="line-460"> current.timestamp = timestampOrDiff;</span> |
| <span class="source-line-no">461</span><span id="line-461"> } else { // it is diff</span> |
| <span class="source-line-no">462</span><span id="line-462"> current.timestamp = current.timestamp - timestampOrDiff;</span> |
| <span class="source-line-no">463</span><span id="line-463"> }</span> |
| <span class="source-line-no">464</span><span id="line-464"> Bytes.putLong(current.keyBuffer, pos, current.timestamp);</span> |
| <span class="source-line-no">465</span><span id="line-465"> pos += Bytes.SIZEOF_LONG;</span> |
| <span class="source-line-no">466</span><span id="line-466"></span> |
| <span class="source-line-no">467</span><span id="line-467"> // type</span> |
| <span class="source-line-no">468</span><span id="line-468"> if ((flag & FLAG_SAME_TYPE) == 0) {</span> |
| <span class="source-line-no">469</span><span id="line-469"> currentBuffer.get(current.keyBuffer, pos, Bytes.SIZEOF_BYTE);</span> |
| <span class="source-line-no">470</span><span id="line-470"> } else if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {</span> |
| <span class="source-line-no">471</span><span id="line-471"> current.keyBuffer[pos] = type;</span> |
| <span class="source-line-no">472</span><span id="line-472"> }</span> |
| <span class="source-line-no">473</span><span id="line-473"></span> |
| <span class="source-line-no">474</span><span id="line-474"> current.valueOffset = currentBuffer.position();</span> |
| <span class="source-line-no">475</span><span id="line-475"> currentBuffer.skip(current.valueLength);</span> |
| <span class="source-line-no">476</span><span id="line-476"></span> |
| <span class="source-line-no">477</span><span id="line-477"> if (includesTags()) {</span> |
| <span class="source-line-no">478</span><span id="line-478"> decodeTags();</span> |
| <span class="source-line-no">479</span><span id="line-479"> }</span> |
| <span class="source-line-no">480</span><span id="line-480"> if (includesMvcc()) {</span> |
| <span class="source-line-no">481</span><span id="line-481"> current.memstoreTS = ByteBufferUtils.readVLong(currentBuffer);</span> |
| <span class="source-line-no">482</span><span id="line-482"> } else {</span> |
| <span class="source-line-no">483</span><span id="line-483"> current.memstoreTS = 0;</span> |
| <span class="source-line-no">484</span><span id="line-484"> }</span> |
| <span class="source-line-no">485</span><span id="line-485"> current.nextKvOffset = currentBuffer.position();</span> |
| <span class="source-line-no">486</span><span id="line-486"> }</span> |
| <span class="source-line-no">487</span><span id="line-487"></span> |
| <span class="source-line-no">488</span><span id="line-488"> @Override</span> |
| <span class="source-line-no">489</span><span id="line-489"> protected void decodeFirst() {</span> |
| <span class="source-line-no">490</span><span id="line-490"> currentBuffer.skip(Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">491</span><span id="line-491"></span> |
| <span class="source-line-no">492</span><span id="line-492"> // read column family</span> |
| <span class="source-line-no">493</span><span id="line-493"> byte familyNameLength = currentBuffer.get();</span> |
| <span class="source-line-no">494</span><span id="line-494"> familyNameWithSize = new byte[familyNameLength + Bytes.SIZEOF_BYTE];</span> |
| <span class="source-line-no">495</span><span id="line-495"> familyNameWithSize[0] = familyNameLength;</span> |
| <span class="source-line-no">496</span><span id="line-496"> currentBuffer.get(familyNameWithSize, Bytes.SIZEOF_BYTE, familyNameLength);</span> |
| <span class="source-line-no">497</span><span id="line-497"> decode(true);</span> |
| <span class="source-line-no">498</span><span id="line-498"> }</span> |
| <span class="source-line-no">499</span><span id="line-499"></span> |
| <span class="source-line-no">500</span><span id="line-500"> @Override</span> |
| <span class="source-line-no">501</span><span id="line-501"> protected void decodeNext() {</span> |
| <span class="source-line-no">502</span><span id="line-502"> decode(false);</span> |
| <span class="source-line-no">503</span><span id="line-503"> }</span> |
| <span class="source-line-no">504</span><span id="line-504"></span> |
| <span class="source-line-no">505</span><span id="line-505"> @Override</span> |
| <span class="source-line-no">506</span><span id="line-506"> protected DiffSeekerState createSeekerState() {</span> |
| <span class="source-line-no">507</span><span id="line-507"> return new DiffSeekerState(this.tmpPair, this.includesTags());</span> |
| <span class="source-line-no">508</span><span id="line-508"> }</span> |
| <span class="source-line-no">509</span><span id="line-509"> }</span> |
| <span class="source-line-no">510</span><span id="line-510">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
