| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.io.encoding;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.DataInputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.DataOutput;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.DataOutputStream;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.ByteBuffer;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.Cell;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.ObjectIntPair;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span>/**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * Encoder similar to {@link DiffKeyDeltaEncoder} but supposedly faster. Compress using: - store<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * size of common prefix - save column family once in the first KeyValue - use integer compression<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * for key, value and prefix (7-bit encoding) - use bits to avoid duplication key length, value<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * length and type if it same as previous - store in 3 bits length of prefix timestamp with previous<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * KeyValue's timestamp - one bit which allow to omit value if it is the same Format: - 1 byte: flag<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * - 1-5 bytes: key length (only if FLAG_SAME_KEY_LENGTH is not set in flag) - 1-5 bytes: value<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * length (only if FLAG_SAME_VALUE_LENGTH is not set in flag) - 1-5 bytes: prefix length - ...<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * bytes: rest of the row (if prefix length is small enough) - ... bytes: qualifier (or suffix<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * depending on prefix length) - 1-8 bytes: timestamp suffix - 1 byte: type (only if FLAG_SAME_TYPE<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * is not set in the flag) - ... bytes: value (only if FLAG_SAME_VALUE is not set in the flag)<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> */<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>@InterfaceAudience.Private<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>public class FastDiffDeltaEncoder extends BufferedDataBlockEncoder {<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> static final int MASK_TIMESTAMP_LENGTH = (1 << 0) | (1 << 1) | (1 << 2);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> static final int SHIFT_TIMESTAMP_LENGTH = 0;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> static final int FLAG_SAME_KEY_LENGTH = 1 << 3;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> static final int FLAG_SAME_VALUE_LENGTH = 1 << 4;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> static final int FLAG_SAME_TYPE = 1 << 5;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> static final int FLAG_SAME_VALUE = 1 << 6;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private static class FastDiffCompressionState extends CompressionState {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> byte[] timestamp = new byte[KeyValue.TIMESTAMP_SIZE];<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> int prevTimestampOffset;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> @Override<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> protected void readTimestamp(ByteBuffer in) {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> in.get(timestamp);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> @Override<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> void copyFrom(CompressionState state) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> super.copyFrom(state);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> FastDiffCompressionState state2 = (FastDiffCompressionState) state;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> System.arraycopy(state2.timestamp, 0, timestamp, 0, KeyValue.TIMESTAMP_SIZE);<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> prevTimestampOffset = state2.prevTimestampOffset;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> /**<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * Copies the first key/value from the given stream, and initializes decompression state based<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * on it. Assumes that we have already read key and value lengths. Does not set<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * {@link #qualifierLength} (not used by decompression) or {@link #prevOffset} (set by the calle<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * afterwards).<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private void decompressFirstKV(ByteBuffer out, DataInputStream in) throws IOException {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> int kvPos = out.position();<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> out.putInt(keyLength);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> out.putInt(valueLength);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> prevTimestampOffset = out.position() + keyLength - KeyValue.TIMESTAMP_TYPE_SIZE;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> ByteBufferUtils.copyFromStreamToBuffer(out, in, keyLength + valueLength);<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> rowLength = out.getShort(kvPos + KeyValue.ROW_OFFSET);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> familyLength = out.get(kvPos + KeyValue.ROW_OFFSET + KeyValue.ROW_LENGTH_SIZE + rowLength);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> type = out.get(prevTimestampOffset + KeyValue.TIMESTAMP_SIZE);<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> private int findCommonTimestampPrefix(byte[] curTsBuf, byte[] prevTsBuf) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> int commonPrefix = 0;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> while (<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> commonPrefix < (KeyValue.TIMESTAMP_SIZE - 1)<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> && curTsBuf[commonPrefix] == prevTsBuf[commonPrefix]<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> ) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> commonPrefix++;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> return commonPrefix; // has to be at most 7 bytes<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> private void uncompressSingleKeyValue(DataInputStream source, ByteBuffer out,<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> FastDiffCompressionState state) throws IOException, EncoderBufferTooSmallException {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> byte flag = source.readByte();<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> int prevKeyLength = state.keyLength;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> state.keyLength = ByteBufferUtils.readCompressedInt(source);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> }<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> state.valueLength = ByteBufferUtils.readCompressedInt(source);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> int commonLength = ByteBufferUtils.readCompressedInt(source);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> ensureSpace(out, state.keyLength + state.valueLength + KeyValue.ROW_OFFSET);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> int kvPos = out.position();<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> if (!state.isFirst()) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> // copy the prefix<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> int common;<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> int prevOffset;<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> out.putInt(state.keyLength);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> out.putInt(state.valueLength);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> prevOffset = state.prevOffset + KeyValue.ROW_OFFSET;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> common = commonLength;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> } else {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> if ((flag & FLAG_SAME_KEY_LENGTH) != 0) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> prevOffset = state.prevOffset;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> common = commonLength + KeyValue.ROW_OFFSET;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> } else {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> out.putInt(state.keyLength);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> prevOffset = state.prevOffset + KeyValue.KEY_LENGTH_SIZE;<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> common = commonLength + KeyValue.KEY_LENGTH_SIZE;<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> ByteBufferUtils.copyFromBufferToBuffer(out, out, prevOffset, common);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> // copy the rest of the key from the buffer<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> int keyRestLength;<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> if (commonLength < state.rowLength + KeyValue.ROW_LENGTH_SIZE) {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> // omit the family part of the key, it is always the same<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> int rowWithSizeLength;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> int rowRestLength;<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> // check length of row<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (commonLength < KeyValue.ROW_LENGTH_SIZE) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // not yet copied, do it now<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> ByteBufferUtils.copyFromStreamToBuffer(out, source,<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> KeyValue.ROW_LENGTH_SIZE - commonLength);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> rowWithSizeLength =<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> out.getShort(out.position() - KeyValue.ROW_LENGTH_SIZE) + KeyValue.ROW_LENGTH_SIZE;<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> rowRestLength = rowWithSizeLength - KeyValue.ROW_LENGTH_SIZE;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> } else {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> // already in kvBuffer, just read it<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> rowWithSizeLength = out.getShort(kvPos + KeyValue.ROW_OFFSET) + KeyValue.ROW_LENGTH_SIZE;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> rowRestLength = rowWithSizeLength - commonLength;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> // copy the rest of row<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> ByteBufferUtils.copyFromStreamToBuffer(out, source, rowRestLength);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // copy the column family<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> ByteBufferUtils.copyFromBufferToBuffer(out, out,<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> state.prevOffset + KeyValue.ROW_OFFSET + KeyValue.ROW_LENGTH_SIZE + state.rowLength,<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> state.familyLength + KeyValue.FAMILY_LENGTH_SIZE);<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> state.rowLength = (short) (rowWithSizeLength - KeyValue.ROW_LENGTH_SIZE);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span><a name="line.173"></a> |
| <span class="sourceLineNo">174</span> keyRestLength = state.keyLength - rowWithSizeLength - state.familyLength<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> - (KeyValue.FAMILY_LENGTH_SIZE + KeyValue.TIMESTAMP_TYPE_SIZE);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> } else {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> // prevRowWithSizeLength is the same as on previous row<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> keyRestLength = state.keyLength - commonLength - KeyValue.TIMESTAMP_TYPE_SIZE;<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> // copy the rest of the key, after column family == column qualifier<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> ByteBufferUtils.copyFromStreamToBuffer(out, source, keyRestLength);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> // copy timestamp<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> int prefixTimestamp = (flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH;<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> ByteBufferUtils.copyFromBufferToBuffer(out, out, state.prevTimestampOffset, prefixTimestamp);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> state.prevTimestampOffset = out.position() - prefixTimestamp;<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> ByteBufferUtils.copyFromStreamToBuffer(out, source,<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> KeyValue.TIMESTAMP_SIZE - prefixTimestamp);<a name="line.188"></a> |
| <span class="sourceLineNo">189</span><a name="line.189"></a> |
| <span class="sourceLineNo">190</span> // copy the type and value<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> if ((flag & FLAG_SAME_TYPE) != 0) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> out.put(state.type);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> if ((flag & FLAG_SAME_VALUE) != 0) {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> ByteBufferUtils.copyFromBufferToBuffer(out, out,<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> state.prevOffset + KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> } else {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> ByteBufferUtils.copyFromStreamToBuffer(out, source, state.valueLength);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> } else {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> if ((flag & FLAG_SAME_VALUE) != 0) {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> ByteBufferUtils.copyFromStreamToBuffer(out, source, KeyValue.TYPE_SIZE);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> ByteBufferUtils.copyFromBufferToBuffer(out, out,<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> state.prevOffset + KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength);<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> } else {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> ByteBufferUtils.copyFromStreamToBuffer(out, source,<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> state.valueLength + KeyValue.TYPE_SIZE);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> state.type = out.get(state.prevTimestampOffset + KeyValue.TIMESTAMP_SIZE);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> } else { // this is the first element<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> state.decompressFirstKV(out, source);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span><a name="line.213"></a> |
| <span class="sourceLineNo">214</span> state.prevOffset = kvPos;<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> }<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> @Override<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> public int internalEncode(Cell cell, HFileBlockDefaultEncodingContext encodingContext,<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> DataOutputStream out) throws IOException {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> EncodingState state = encodingContext.getEncodingState();<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> int size = compressSingleKeyValue(out, cell, state.prevCell);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> size += afterEncodingKeyValue(cell, out, encodingContext);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> state.prevCell = cell;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> return size;<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> private int compressSingleKeyValue(DataOutputStream out, Cell cell, Cell prevCell)<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> throws IOException {<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> int flag = 0; // Do not use more bits than will fit into a byte<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> int kLength = KeyValueUtil.keyLength(cell);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> int vLength = cell.getValueLength();<a name="line.231"></a> |
| <span class="sourceLineNo">232</span><a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (prevCell == null) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> // copy the key, there is no common prefix with none<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> out.write(flag);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> ByteBufferUtils.putCompressedInt(out, kLength);<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> ByteBufferUtils.putCompressedInt(out, vLength);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> ByteBufferUtils.putCompressedInt(out, 0);<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> PrivateCellUtil.writeFlatKey(cell, (DataOutput) out);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> // Write the value part<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> PrivateCellUtil.writeValue(out, cell, cell.getValueLength());<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> } else {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> int preKeyLength = KeyValueUtil.keyLength(prevCell);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> int preValLength = prevCell.getValueLength();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> // find a common prefix and skip it<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> int commonPrefix = PrivateCellUtil.findCommonPrefixInFlatKey(cell, prevCell, true, false);<a name="line.246"></a> |
| <span class="sourceLineNo">247</span><a name="line.247"></a> |
| <span class="sourceLineNo">248</span> if (kLength == preKeyLength) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> flag |= FLAG_SAME_KEY_LENGTH;<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> if (vLength == prevCell.getValueLength()) {<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> flag |= FLAG_SAME_VALUE_LENGTH;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> if (cell.getTypeByte() == prevCell.getTypeByte()) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> flag |= FLAG_SAME_TYPE;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> byte[] curTsBuf = Bytes.toBytes(cell.getTimestamp());<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> int commonTimestampPrefix =<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> findCommonTimestampPrefix(curTsBuf, Bytes.toBytes(prevCell.getTimestamp()));<a name="line.260"></a> |
| <span class="sourceLineNo">261</span><a name="line.261"></a> |
| <span class="sourceLineNo">262</span> flag |= commonTimestampPrefix << SHIFT_TIMESTAMP_LENGTH;<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> // Check if current and previous values are the same. Compare value<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> // length first as an optimization.<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> if (<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> vLength == preValLength<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> && PrivateCellUtil.matchingValue(cell, prevCell, vLength, preValLength)<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> ) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> flag |= FLAG_SAME_VALUE;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> out.write(flag);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> ByteBufferUtils.putCompressedInt(out, kLength);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> ByteBufferUtils.putCompressedInt(out, vLength);<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> ByteBufferUtils.putCompressedInt(out, commonPrefix);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> short rLen = cell.getRowLength();<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> if (commonPrefix < rLen + KeyValue.ROW_LENGTH_SIZE) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> // Previous and current rows are different. Copy the differing part of<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> // the row, skip the column family, and copy the qualifier.<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> PrivateCellUtil.writeRowKeyExcludingCommon(cell, rLen, commonPrefix, out);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> PrivateCellUtil.writeQualifier(out, cell, cell.getQualifierLength());<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> } else {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> // The common part includes the whole row. As the column family is the<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> // same across the whole file, it will automatically be included in the<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> // common prefix, so we need not special-case it here.<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> // What we write here is the non common part of the qualifier<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> int commonQualPrefix = commonPrefix - (rLen + KeyValue.ROW_LENGTH_SIZE)<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> - (cell.getFamilyLength() + KeyValue.FAMILY_LENGTH_SIZE);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> PrivateCellUtil.writeQualifierSkippingBytes(out, cell, cell.getQualifierLength(),<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> commonQualPrefix);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // Write non common ts part<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> out.write(curTsBuf, commonTimestampPrefix, KeyValue.TIMESTAMP_SIZE - commonTimestampPrefix);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span><a name="line.299"></a> |
| <span class="sourceLineNo">300</span> // Write the type if it is not the same as before.<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> if ((flag & FLAG_SAME_TYPE) == 0) {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> out.write(cell.getTypeByte());<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span><a name="line.304"></a> |
| <span class="sourceLineNo">305</span> // Write the value if it is not the same as before.<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> if ((flag & FLAG_SAME_VALUE) == 0) {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> PrivateCellUtil.writeValue(out, cell, vLength);<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> return kLength + vLength + KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> }<a name="line.311"></a> |
| <span class="sourceLineNo">312</span><a name="line.312"></a> |
| <span class="sourceLineNo">313</span> @Override<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> int decompressedSize = source.readInt();<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + allocateHeaderLength);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> buffer.position(allocateHeaderLength);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> FastDiffCompressionState state = new FastDiffCompressionState();<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> while (source.available() > skipLastBytes) {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> uncompressSingleKeyValue(source, buffer, state);<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> afterDecodingKeyValue(source, buffer, decodingCtx);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> if (source.available() != skipLastBytes) {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> throw new IllegalStateException("Read too much bytes.");<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span><a name="line.328"></a> |
| <span class="sourceLineNo">329</span> return buffer;<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> @Override<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> public Cell getFirstKeyCellInBlock(ByteBuff block) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> block.mark();<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> block.position(Bytes.SIZEOF_INT + Bytes.SIZEOF_BYTE);<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> int keyLength = ByteBuff.readCompressedInt(block);<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> // TODO : See if we can avoid these reads as the read values are not getting used<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> ByteBuff.readCompressedInt(block); // valueLength<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> ByteBuff.readCompressedInt(block); // commonLength<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> ByteBuffer key = block.asSubByteBuffer(keyLength).duplicate();<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> block.reset();<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> return createFirstKeyCell(key, keyLength);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span><a name="line.344"></a> |
| <span class="sourceLineNo">345</span> @Override<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> public String toString() {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> return FastDiffDeltaEncoder.class.getSimpleName();<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span><a name="line.349"></a> |
| <span class="sourceLineNo">350</span> protected static class FastDiffSeekerState extends SeekerState {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> private byte[] prevTimestampAndType = new byte[KeyValue.TIMESTAMP_TYPE_SIZE];<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> private int rowLengthWithSize;<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> private int familyLengthWithSize;<a name="line.353"></a> |
| <span class="sourceLineNo">354</span><a name="line.354"></a> |
| <span class="sourceLineNo">355</span> public FastDiffSeekerState(ObjectIntPair<ByteBuffer> tmpPair, boolean includeTags) {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> super(tmpPair, includeTags);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> }<a name="line.357"></a> |
| <span class="sourceLineNo">358</span><a name="line.358"></a> |
| <span class="sourceLineNo">359</span> @Override<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> protected void copyFromNext(SeekerState that) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> super.copyFromNext(that);<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> FastDiffSeekerState other = (FastDiffSeekerState) that;<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> System.arraycopy(other.prevTimestampAndType, 0, prevTimestampAndType, 0,<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> KeyValue.TIMESTAMP_TYPE_SIZE);<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> rowLengthWithSize = other.rowLengthWithSize;<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> familyLengthWithSize = other.familyLengthWithSize;<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span><a name="line.369"></a> |
| <span class="sourceLineNo">370</span> @Override<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> public EncodedSeeker createSeeker(final HFileBlockDecodingContext decodingCtx) {<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> return new FastDiffSeekerStateBufferedEncodedSeeker(decodingCtx);<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> }<a name="line.373"></a> |
| <span class="sourceLineNo">374</span><a name="line.374"></a> |
| <span class="sourceLineNo">375</span> private static class FastDiffSeekerStateBufferedEncodedSeeker<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> extends BufferedEncodedSeeker<FastDiffSeekerState> {<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> private FastDiffSeekerStateBufferedEncodedSeeker(HFileBlockDecodingContext decodingCtx) {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> super(decodingCtx);<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> }<a name="line.380"></a> |
| <span class="sourceLineNo">381</span><a name="line.381"></a> |
| <span class="sourceLineNo">382</span> private void decode(boolean isFirst) {<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> byte flag = currentBuffer.get();<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> if (!isFirst) {<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> System.arraycopy(current.keyBuffer,<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> current.keyLength - current.prevTimestampAndType.length, current.prevTimestampAndType,<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> 0, current.prevTimestampAndType.length);<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> }<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> current.keyLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> }<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> current.valueLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> current.lastCommonPrefix = ByteBuff.readCompressedInt(currentBuffer);<a name="line.395"></a> |
| <span class="sourceLineNo">396</span><a name="line.396"></a> |
| <span class="sourceLineNo">397</span> current.ensureSpaceForKey();<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> if (isFirst) {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> // copy everything<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> current.keyLength - current.prevTimestampAndType.length);<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> current.rowLengthWithSize = Bytes.toShort(current.keyBuffer, 0) + Bytes.SIZEOF_SHORT;<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> current.familyLengthWithSize =<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> current.keyBuffer[current.rowLengthWithSize] + Bytes.SIZEOF_BYTE;<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> } else if (current.lastCommonPrefix < Bytes.SIZEOF_SHORT) {<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> // length of row is different, copy everything except family<a name="line.407"></a> |
| <span class="sourceLineNo">408</span><a name="line.408"></a> |
| <span class="sourceLineNo">409</span> // copy the row size<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> int oldRowLengthWithSize = current.rowLengthWithSize;<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> Bytes.SIZEOF_SHORT - current.lastCommonPrefix);<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> current.rowLengthWithSize = Bytes.toShort(current.keyBuffer, 0) + Bytes.SIZEOF_SHORT;<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> // move the column family<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> System.arraycopy(current.keyBuffer, oldRowLengthWithSize, current.keyBuffer,<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> current.rowLengthWithSize, current.familyLengthWithSize);<a name="line.417"></a> |
| <span class="sourceLineNo">418</span><a name="line.418"></a> |
| <span class="sourceLineNo">419</span> // copy the rest of row<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> currentBuffer.get(current.keyBuffer, Bytes.SIZEOF_SHORT,<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> current.rowLengthWithSize - Bytes.SIZEOF_SHORT);<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> // copy the qualifier<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> currentBuffer.get(current.keyBuffer,<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> current.rowLengthWithSize + current.familyLengthWithSize,<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> current.keyLength - current.rowLengthWithSize - current.familyLengthWithSize<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> - current.prevTimestampAndType.length);<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> } else if (current.lastCommonPrefix < current.rowLengthWithSize) {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> // We have to copy part of row and qualifier, but the column family<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> // is in the right place.<a name="line.430"></a> |
| <span class="sourceLineNo">431</span><a name="line.431"></a> |
| <span class="sourceLineNo">432</span> // before column family (rest of row)<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> current.rowLengthWithSize - current.lastCommonPrefix);<a name="line.434"></a> |
| <span class="sourceLineNo">435</span><a name="line.435"></a> |
| <span class="sourceLineNo">436</span> // after column family (qualifier)<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> currentBuffer.get(current.keyBuffer,<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> current.rowLengthWithSize + current.familyLengthWithSize,<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> current.keyLength - current.rowLengthWithSize - current.familyLengthWithSize<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> - current.prevTimestampAndType.length);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> } else {<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> // copy just the ending<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> current.keyLength - current.prevTimestampAndType.length - current.lastCommonPrefix);<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> }<a name="line.445"></a> |
| <span class="sourceLineNo">446</span><a name="line.446"></a> |
| <span class="sourceLineNo">447</span> // timestamp<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> int pos = current.keyLength - current.prevTimestampAndType.length;<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> int commonTimestampPrefix = (flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH;<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> System.arraycopy(current.prevTimestampAndType, 0, current.keyBuffer, pos,<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> commonTimestampPrefix);<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> }<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> pos += commonTimestampPrefix;<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> currentBuffer.get(current.keyBuffer, pos, Bytes.SIZEOF_LONG - commonTimestampPrefix);<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> pos += Bytes.SIZEOF_LONG - commonTimestampPrefix;<a name="line.456"></a> |
| <span class="sourceLineNo">457</span><a name="line.457"></a> |
| <span class="sourceLineNo">458</span> // type<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> if ((flag & FLAG_SAME_TYPE) == 0) {<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> currentBuffer.get(current.keyBuffer, pos, Bytes.SIZEOF_BYTE);<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> } else if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> current.keyBuffer[pos] = current.prevTimestampAndType[Bytes.SIZEOF_LONG];<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> }<a name="line.463"></a> |
| <span class="sourceLineNo">464</span><a name="line.464"></a> |
| <span class="sourceLineNo">465</span> // handle value<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> if ((flag & FLAG_SAME_VALUE) == 0) {<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> current.valueOffset = currentBuffer.position();<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> currentBuffer.skip(current.valueLength);<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> }<a name="line.469"></a> |
| <span class="sourceLineNo">470</span><a name="line.470"></a> |
| <span class="sourceLineNo">471</span> if (includesTags()) {<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> decodeTags();<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> }<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> if (includesMvcc()) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> current.memstoreTS = ByteBufferUtils.readVLong(currentBuffer);<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> } else {<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> current.memstoreTS = 0;<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> }<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> current.nextKvOffset = currentBuffer.position();<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> }<a name="line.480"></a> |
| <span class="sourceLineNo">481</span><a name="line.481"></a> |
| <span class="sourceLineNo">482</span> @Override<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> protected void decodeFirst() {<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> currentBuffer.skip(Bytes.SIZEOF_INT);<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> decode(true);<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> }<a name="line.486"></a> |
| <span class="sourceLineNo">487</span><a name="line.487"></a> |
| <span class="sourceLineNo">488</span> @Override<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> protected void decodeNext() {<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> decode(false);<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> }<a name="line.491"></a> |
| <span class="sourceLineNo">492</span><a name="line.492"></a> |
| <span class="sourceLineNo">493</span> @Override<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> protected FastDiffSeekerState createSeekerState() {<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> return new FastDiffSeekerState(this.tmpPair, this.includesTags());<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> }<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> }<a name="line.497"></a> |
| <span class="sourceLineNo">498</span>}<a name="line.498"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
