[17/52] [partial] hbase-site git commit: Published site at 950d547dae684155020edb879a343bee1bf18e97.

misty Mon, 29 Aug 2016 08:33:35 -0700

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/RowIndexSeekerV1.SeekerState.html
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+<!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 or more<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * contributor license agreements. See 
the NOTICE file distributed with this<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * work for additional information 
regarding copyright ownership. The ASF<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * licenses this file to you under the 
Apache License, Version 2.0 (the<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * "License"); you may not use this file 
except in compliance with the License.<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * You may obtain a copy of the License 
at<a name="line.7"></a>
+<span class="sourceLineNo">008</span> *<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * 
http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> * Unless required by applicable law or 
agreed to in writing, software<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * distributed under the License is 
distributed on an "AS IS" BASIS, WITHOUT<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * WARRANTIES OR CONDITIONS OF ANY KIND, 
either express or implied. See the<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * License for the specific language 
governing permissions and limitations<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * under the License.<a 
name="line.15"></a>
+<span class="sourceLineNo">016</span> */<a name="line.16"></a>
+<span class="sourceLineNo">017</span>package 
org.apache.hadoop.hbase.io.encoding;<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>import java.nio.ByteBuffer;<a 
name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import 
org.apache.hadoop.hbase.ByteBufferedCell;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import 
org.apache.hadoop.hbase.ByteBufferedKeyOnlyKeyValue;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Cell;<a 
name="line.23"></a>
+<span class="sourceLineNo">024</span>import 
org.apache.hadoop.hbase.CellComparator;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import 
org.apache.hadoop.hbase.CellUtil;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import 
org.apache.hadoop.hbase.HConstants;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import 
org.apache.hadoop.hbase.KeyValue;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import 
org.apache.hadoop.hbase.OffheapKeyValue;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import 
org.apache.hadoop.hbase.SizeCachedKeyValue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import 
org.apache.hadoop.hbase.SizeCachedNoTagsKeyValue;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import 
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import 
org.apache.hadoop.hbase.io.encoding.DataBlockEncoder.EncodedSeeker;<a 
name="line.32"></a>
+<span class="sourceLineNo">033</span>import 
org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import 
org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import 
org.apache.hadoop.hbase.util.Bytes;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import 
org.apache.hadoop.hbase.util.ObjectIntPair;<a name="line.36"></a>
+<span class="sourceLineNo">037</span><a name="line.37"></a>
+<span class="sourceLineNo">038</span>@InterfaceAudience.Private<a 
name="line.38"></a>
+<span class="sourceLineNo">039</span>public class RowIndexSeekerV1 implements 
EncodedSeeker {<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>  private HFileBlockDecodingContext 
decodingCtx;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>  private final CellComparator 
comparator;<a name="line.42"></a>
+<span class="sourceLineNo">043</span><a name="line.43"></a>
+<span class="sourceLineNo">044</span>  // A temp pair object which will be 
reused by ByteBuff#asSubByteBuffer calls. This avoids too<a name="line.44"></a>
+<span class="sourceLineNo">045</span>  // many object creations.<a 
name="line.45"></a>
+<span class="sourceLineNo">046</span>  protected final 
ObjectIntPair&lt;ByteBuffer&gt; tmpPair = new 
ObjectIntPair&lt;ByteBuffer&gt;();<a name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span>  private ByteBuff currentBuffer;<a 
name="line.48"></a>
+<span class="sourceLineNo">049</span>  private SeekerState current = new 
SeekerState(); // always valid<a name="line.49"></a>
+<span class="sourceLineNo">050</span>  private SeekerState previous = new 
SeekerState(); // may not be valid<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span>  private int rowNumber;<a 
name="line.52"></a>
+<span class="sourceLineNo">053</span>  private ByteBuff rowOffsets = null;<a 
name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span>  public RowIndexSeekerV1(CellComparator 
comparator,<a name="line.55"></a>
+<span class="sourceLineNo">056</span>      HFileBlockDecodingContext 
decodingCtx) {<a name="line.56"></a>
+<span class="sourceLineNo">057</span>    this.comparator = comparator;<a 
name="line.57"></a>
+<span class="sourceLineNo">058</span>    this.decodingCtx = decodingCtx;<a 
name="line.58"></a>
+<span class="sourceLineNo">059</span>  }<a name="line.59"></a>
+<span class="sourceLineNo">060</span><a name="line.60"></a>
+<span class="sourceLineNo">061</span>  @Override<a name="line.61"></a>
+<span class="sourceLineNo">062</span>  public void setCurrentBuffer(ByteBuff 
buffer) {<a name="line.62"></a>
+<span class="sourceLineNo">063</span>    int onDiskSize = 
buffer.getInt(buffer.limit() - Bytes.SIZEOF_INT);<a name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span>    // Data part<a name="line.65"></a>
+<span class="sourceLineNo">066</span>    ByteBuff dup = buffer.duplicate();<a 
name="line.66"></a>
+<span class="sourceLineNo">067</span>    dup.position(buffer.position());<a 
name="line.67"></a>
+<span class="sourceLineNo">068</span>    dup.limit(buffer.position() + 
onDiskSize);<a name="line.68"></a>
+<span class="sourceLineNo">069</span>    currentBuffer = dup.slice();<a 
name="line.69"></a>
+<span class="sourceLineNo">070</span>    current.currentBuffer = 
currentBuffer;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    buffer.skip(onDiskSize);<a 
name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span>    // Row offset<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    rowNumber = buffer.getInt();<a 
name="line.74"></a>
+<span class="sourceLineNo">075</span>    int totalRowOffsetsLength = 
Bytes.SIZEOF_INT * rowNumber;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>    ByteBuff rowDup = 
buffer.duplicate();<a name="line.76"></a>
+<span class="sourceLineNo">077</span>    rowDup.position(buffer.position());<a 
name="line.77"></a>
+<span class="sourceLineNo">078</span>    rowDup.limit(buffer.position() + 
totalRowOffsetsLength);<a name="line.78"></a>
+<span class="sourceLineNo">079</span>    rowOffsets = rowDup.slice();<a 
name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span>    decodeFirst();<a name="line.81"></a>
+<span class="sourceLineNo">082</span>  }<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span>  @Override<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  public Cell getKey() {<a 
name="line.85"></a>
+<span class="sourceLineNo">086</span>    if (current.keyBuffer.hasArray()) {<a 
name="line.86"></a>
+<span class="sourceLineNo">087</span>      return new 
KeyValue.KeyOnlyKeyValue(current.keyBuffer.array(),<a name="line.87"></a>
+<span class="sourceLineNo">088</span>          current.keyBuffer.arrayOffset() 
+ current.keyBuffer.position(),<a name="line.88"></a>
+<span class="sourceLineNo">089</span>          current.keyLength);<a 
name="line.89"></a>
+<span class="sourceLineNo">090</span>    } else {<a name="line.90"></a>
+<span class="sourceLineNo">091</span>      byte[] key = new 
byte[current.keyLength];<a name="line.91"></a>
+<span class="sourceLineNo">092</span>      
ByteBufferUtils.copyFromBufferToArray(key, current.keyBuffer,<a 
name="line.92"></a>
+<span class="sourceLineNo">093</span>          current.keyBuffer.position(), 
0, current.keyLength);<a name="line.93"></a>
+<span class="sourceLineNo">094</span>      return new 
KeyValue.KeyOnlyKeyValue(key, 0, current.keyLength);<a name="line.94"></a>
+<span class="sourceLineNo">095</span>    }<a name="line.95"></a>
+<span class="sourceLineNo">096</span>  }<a name="line.96"></a>
+<span class="sourceLineNo">097</span><a name="line.97"></a>
+<span class="sourceLineNo">098</span>  @Override<a name="line.98"></a>
+<span class="sourceLineNo">099</span>  public ByteBuffer getValueShallowCopy() 
{<a name="line.99"></a>
+<span class="sourceLineNo">100</span>    
currentBuffer.asSubByteBuffer(current.valueOffset, current.valueLength,<a 
name="line.100"></a>
+<span class="sourceLineNo">101</span>        tmpPair);<a name="line.101"></a>
+<span class="sourceLineNo">102</span>    ByteBuffer dup = 
tmpPair.getFirst().duplicate();<a name="line.102"></a>
+<span class="sourceLineNo">103</span>    dup.position(tmpPair.getSecond());<a 
name="line.103"></a>
+<span class="sourceLineNo">104</span>    dup.limit(tmpPair.getSecond() + 
current.valueLength);<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    return dup.slice();<a 
name="line.105"></a>
+<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span>  @Override<a name="line.108"></a>
+<span class="sourceLineNo">109</span>  public Cell getCell() {<a 
name="line.109"></a>
+<span class="sourceLineNo">110</span>    return current.toCell();<a 
name="line.110"></a>
+<span class="sourceLineNo">111</span>  }<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span>  @Override<a name="line.113"></a>
+<span class="sourceLineNo">114</span>  public void rewind() {<a 
name="line.114"></a>
+<span class="sourceLineNo">115</span>    currentBuffer.rewind();<a 
name="line.115"></a>
+<span class="sourceLineNo">116</span>    decodeFirst();<a name="line.116"></a>
+<span class="sourceLineNo">117</span>  }<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span>  @Override<a name="line.119"></a>
+<span class="sourceLineNo">120</span>  public boolean next() {<a 
name="line.120"></a>
+<span class="sourceLineNo">121</span>    if (!currentBuffer.hasRemaining()) 
{<a name="line.121"></a>
+<span class="sourceLineNo">122</span>      return false;<a name="line.122"></a>
+<span class="sourceLineNo">123</span>    }<a name="line.123"></a>
+<span class="sourceLineNo">124</span>    decodeNext();<a name="line.124"></a>
+<span class="sourceLineNo">125</span>    previous.invalidate();<a 
name="line.125"></a>
+<span class="sourceLineNo">126</span>    return true;<a name="line.126"></a>
+<span class="sourceLineNo">127</span>  }<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span>  private int binarySearch(Cell seekCell, 
boolean seekBefore) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span>    int low = 0;<a name="line.130"></a>
+<span class="sourceLineNo">131</span>    int high = rowNumber - 1;<a 
name="line.131"></a>
+<span class="sourceLineNo">132</span>    int mid = (low + high) &gt;&gt;&gt; 
1;<a name="line.132"></a>
+<span class="sourceLineNo">133</span>    int comp = 0;<a name="line.133"></a>
+<span class="sourceLineNo">134</span>    while (low &lt;= high) {<a 
name="line.134"></a>
+<span class="sourceLineNo">135</span>      mid = (low + high) &gt;&gt;&gt; 
1;<a name="line.135"></a>
+<span class="sourceLineNo">136</span>      ByteBuffer row = getRow(mid);<a 
name="line.136"></a>
+<span class="sourceLineNo">137</span>      comp = compareRows(row, 
seekCell);<a name="line.137"></a>
+<span class="sourceLineNo">138</span>      if (comp &lt; 0) {<a 
name="line.138"></a>
+<span class="sourceLineNo">139</span>        low = mid + 1;<a 
name="line.139"></a>
+<span class="sourceLineNo">140</span>      } else if (comp &gt; 0) {<a 
name="line.140"></a>
+<span class="sourceLineNo">141</span>        high = mid - 1;<a 
name="line.141"></a>
+<span class="sourceLineNo">142</span>      } else {<a name="line.142"></a>
+<span class="sourceLineNo">143</span>        // key found<a 
name="line.143"></a>
+<span class="sourceLineNo">144</span>        if (seekBefore) {<a 
name="line.144"></a>
+<span class="sourceLineNo">145</span>          return mid - 1;<a 
name="line.145"></a>
+<span class="sourceLineNo">146</span>        } else {<a name="line.146"></a>
+<span class="sourceLineNo">147</span>          return mid;<a 
name="line.147"></a>
+<span class="sourceLineNo">148</span>        }<a name="line.148"></a>
+<span class="sourceLineNo">149</span>      }<a name="line.149"></a>
+<span class="sourceLineNo">150</span>    }<a name="line.150"></a>
+<span class="sourceLineNo">151</span>    // key not found.<a 
name="line.151"></a>
+<span class="sourceLineNo">152</span>    if (comp &gt; 0) {<a 
name="line.152"></a>
+<span class="sourceLineNo">153</span>      return mid - 1;<a 
name="line.153"></a>
+<span class="sourceLineNo">154</span>    } else {<a name="line.154"></a>
+<span class="sourceLineNo">155</span>      return mid;<a name="line.155"></a>
+<span class="sourceLineNo">156</span>    }<a name="line.156"></a>
+<span class="sourceLineNo">157</span>  }<a name="line.157"></a>
+<span class="sourceLineNo">158</span><a name="line.158"></a>
+<span class="sourceLineNo">159</span>  private int compareRows(ByteBuffer row, 
Cell seekCell) {<a name="line.159"></a>
+<span class="sourceLineNo">160</span>    if (seekCell instanceof 
ByteBufferedCell) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span>      return 
ByteBufferUtils.compareTo(row, row.position(), row.remaining(),<a 
name="line.161"></a>
+<span class="sourceLineNo">162</span>          ((ByteBufferedCell) 
seekCell).getRowByteBuffer(),<a name="line.162"></a>
+<span class="sourceLineNo">163</span>          ((ByteBufferedCell) 
seekCell).getRowPosition(),<a name="line.163"></a>
+<span class="sourceLineNo">164</span>          seekCell.getRowLength());<a 
name="line.164"></a>
+<span class="sourceLineNo">165</span>    } else {<a name="line.165"></a>
+<span class="sourceLineNo">166</span>      return 
ByteBufferUtils.compareTo(row, row.position(), row.remaining(),<a 
name="line.166"></a>
+<span class="sourceLineNo">167</span>          seekCell.getRowArray(), 
seekCell.getRowOffset(),<a name="line.167"></a>
+<span class="sourceLineNo">168</span>          seekCell.getRowLength());<a 
name="line.168"></a>
+<span class="sourceLineNo">169</span>    }<a name="line.169"></a>
+<span class="sourceLineNo">170</span>  }<a name="line.170"></a>
+<span class="sourceLineNo">171</span><a name="line.171"></a>
+<span class="sourceLineNo">172</span>  private ByteBuffer getRow(int index) 
{<a name="line.172"></a>
+<span class="sourceLineNo">173</span>    int offset = 
rowOffsets.getIntAfterPosition(index * Bytes.SIZEOF_INT);<a name="line.173"></a>
+<span class="sourceLineNo">174</span>    ByteBuff block = 
currentBuffer.duplicate();<a name="line.174"></a>
+<span class="sourceLineNo">175</span>    block.position(offset + 
Bytes.SIZEOF_LONG);<a name="line.175"></a>
+<span class="sourceLineNo">176</span>    short rowLen = block.getShort();<a 
name="line.176"></a>
+<span class="sourceLineNo">177</span>    
block.asSubByteBuffer(block.position(), rowLen, tmpPair);<a name="line.177"></a>
+<span class="sourceLineNo">178</span>    ByteBuffer row = 
tmpPair.getFirst();<a name="line.178"></a>
+<span class="sourceLineNo">179</span>    
row.position(tmpPair.getSecond()).limit(tmpPair.getSecond() + rowLen);<a 
name="line.179"></a>
+<span class="sourceLineNo">180</span>    return row;<a name="line.180"></a>
+<span class="sourceLineNo">181</span>  }<a name="line.181"></a>
+<span class="sourceLineNo">182</span><a name="line.182"></a>
+<span class="sourceLineNo">183</span>  @Override<a name="line.183"></a>
+<span class="sourceLineNo">184</span>  public int seekToKeyInBlock(Cell 
seekCell, boolean seekBefore) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span>    previous.invalidate();<a 
name="line.185"></a>
+<span class="sourceLineNo">186</span>    int index = binarySearch(seekCell, 
seekBefore);<a name="line.186"></a>
+<span class="sourceLineNo">187</span>    if (index &lt; 0) {<a 
name="line.187"></a>
+<span class="sourceLineNo">188</span>      return HConstants.INDEX_KEY_MAGIC; 
// using optimized index key<a name="line.188"></a>
+<span class="sourceLineNo">189</span>    } else {<a name="line.189"></a>
+<span class="sourceLineNo">190</span>      int offset = 
rowOffsets.getIntAfterPosition(index * Bytes.SIZEOF_INT);<a name="line.190"></a>
+<span class="sourceLineNo">191</span>      if (offset != 0) {<a 
name="line.191"></a>
+<span class="sourceLineNo">192</span>        decodeAtPosition(offset);<a 
name="line.192"></a>
+<span class="sourceLineNo">193</span>      }<a name="line.193"></a>
+<span class="sourceLineNo">194</span>    }<a name="line.194"></a>
+<span class="sourceLineNo">195</span>    do {<a name="line.195"></a>
+<span class="sourceLineNo">196</span>      int comp;<a name="line.196"></a>
+<span class="sourceLineNo">197</span>      comp = 
comparator.compareKeyIgnoresMvcc(seekCell, current.currentKey);<a 
name="line.197"></a>
+<span class="sourceLineNo">198</span>      if (comp == 0) { // exact match<a 
name="line.198"></a>
+<span class="sourceLineNo">199</span>        if (seekBefore) {<a 
name="line.199"></a>
+<span class="sourceLineNo">200</span>          if (!previous.isValid()) {<a 
name="line.200"></a>
+<span class="sourceLineNo">201</span>            // The caller (seekBefore) 
has to ensure that we are not at the<a name="line.201"></a>
+<span class="sourceLineNo">202</span>            // first key in the block.<a 
name="line.202"></a>
+<span class="sourceLineNo">203</span>            throw new 
IllegalStateException("Cannot seekBefore if "<a name="line.203"></a>
+<span class="sourceLineNo">204</span>                + "positioned at the 
first key in the block: key="<a name="line.204"></a>
+<span class="sourceLineNo">205</span>                + 
Bytes.toStringBinary(seekCell.getRowArray()));<a name="line.205"></a>
+<span class="sourceLineNo">206</span>          }<a name="line.206"></a>
+<span class="sourceLineNo">207</span>          moveToPrevious();<a 
name="line.207"></a>
+<span class="sourceLineNo">208</span>          return 1;<a name="line.208"></a>
+<span class="sourceLineNo">209</span>        }<a name="line.209"></a>
+<span class="sourceLineNo">210</span>        return 0;<a name="line.210"></a>
+<span class="sourceLineNo">211</span>      }<a name="line.211"></a>
+<span class="sourceLineNo">212</span><a name="line.212"></a>
+<span class="sourceLineNo">213</span>      if (comp &lt; 0) { // already too 
large, check previous<a name="line.213"></a>
+<span class="sourceLineNo">214</span>        if (previous.isValid()) {<a 
name="line.214"></a>
+<span class="sourceLineNo">215</span>          moveToPrevious();<a 
name="line.215"></a>
+<span class="sourceLineNo">216</span>        } else {<a name="line.216"></a>
+<span class="sourceLineNo">217</span>          return 
HConstants.INDEX_KEY_MAGIC; // using optimized index key<a name="line.217"></a>
+<span class="sourceLineNo">218</span>        }<a name="line.218"></a>
+<span class="sourceLineNo">219</span>        return 1;<a name="line.219"></a>
+<span class="sourceLineNo">220</span>      }<a name="line.220"></a>
+<span class="sourceLineNo">221</span><a name="line.221"></a>
+<span class="sourceLineNo">222</span>      // move to next, if more data is 
available<a name="line.222"></a>
+<span class="sourceLineNo">223</span>      if (currentBuffer.hasRemaining()) 
{<a name="line.223"></a>
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+<span class="sourceLineNo">230</span><a name="line.230"></a>
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an exact match<a name="line.231"></a>
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+<span class="sourceLineNo">234</span><a name="line.234"></a>
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+<span class="sourceLineNo">243</span><a name="line.243"></a>
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currentBuffer.position(current.nextKvOffset);<a name="line.245"></a>
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+<span class="sourceLineNo">249</span>  @Override<a name="line.249"></a>
+<span class="sourceLineNo">250</span>  public int compareKey(CellComparator 
comparator, Cell key) {<a name="line.250"></a>
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comparator.compareKeyIgnoresMvcc(key, current.currentKey);<a 
name="line.251"></a>
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+<span class="sourceLineNo">253</span><a name="line.253"></a>
+<span class="sourceLineNo">254</span>  protected void decodeFirst() {<a 
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position) {<a name="line.259"></a>
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name="line.260"></a>
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name="line.262"></a>
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+<span class="sourceLineNo">264</span><a name="line.264"></a>
+<span class="sourceLineNo">265</span>  protected void decodeNext() {<a 
name="line.265"></a>
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currentBuffer.position();<a name="line.266"></a>
+<span class="sourceLineNo">267</span>    long ll = 
currentBuffer.getLongAfterPosition(0);<a name="line.267"></a>
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length and bottom int as value length<a name="line.268"></a>
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&gt;&gt; Integer.SIZE);<a name="line.269"></a>
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(Bytes.MASK_FOR_LOWER_INT_IN_LONG ^ ll);<a name="line.270"></a>
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currentBuffer.skip(Bytes.SIZEOF_LONG);<a name="line.271"></a>
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currentBuffer.asSubByteBuffer(currentBuffer.position(), current.keyLength,<a 
name="line.273"></a>
+<span class="sourceLineNo">274</span>        tmpPair);<a name="line.274"></a>
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tmpPair.getFirst().duplicate();<a name="line.275"></a>
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key.position(tmpPair.getSecond()).limit(<a name="line.276"></a>
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current.keyLength);<a name="line.277"></a>
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name="line.278"></a>
+<span class="sourceLineNo">279</span>    
currentBuffer.skip(current.keyLength);<a name="line.279"></a>
+<span class="sourceLineNo">280</span>    // value part<a name="line.280"></a>
+<span class="sourceLineNo">281</span>    current.valueOffset = 
currentBuffer.position();<a name="line.281"></a>
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currentBuffer.skip(current.valueLength);<a name="line.282"></a>
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name="line.283"></a>
+<span class="sourceLineNo">284</span>      decodeTags();<a name="line.284"></a>
+<span class="sourceLineNo">285</span>    }<a name="line.285"></a>
+<span class="sourceLineNo">286</span>    if (includesMvcc()) {<a 
name="line.286"></a>
+<span class="sourceLineNo">287</span>      current.memstoreTS = 
ByteBuff.readVLong(currentBuffer);<a name="line.287"></a>
+<span class="sourceLineNo">288</span>    } else {<a name="line.288"></a>
+<span class="sourceLineNo">289</span>      current.memstoreTS = 0;<a 
name="line.289"></a>
+<span class="sourceLineNo">290</span>    }<a name="line.290"></a>
+<span class="sourceLineNo">291</span>    current.nextKvOffset = 
currentBuffer.position();<a name="line.291"></a>
+<span class="sourceLineNo">292</span>    
current.currentKey.setKey(current.keyBuffer, tmpPair.getSecond(),<a 
name="line.292"></a>
+<span class="sourceLineNo">293</span>        current.keyLength);<a 
name="line.293"></a>
+<span class="sourceLineNo">294</span>  }<a name="line.294"></a>
+<span class="sourceLineNo">295</span><a name="line.295"></a>
+<span class="sourceLineNo">296</span>  protected boolean includesMvcc() {<a 
name="line.296"></a>
+<span class="sourceLineNo">297</span>    return 
this.decodingCtx.getHFileContext().isIncludesMvcc();<a name="line.297"></a>
+<span class="sourceLineNo">298</span>  }<a name="line.298"></a>
+<span class="sourceLineNo">299</span><a name="line.299"></a>
+<span class="sourceLineNo">300</span>  protected boolean includesTags() {<a 
name="line.300"></a>
+<span class="sourceLineNo">301</span>    return 
this.decodingCtx.getHFileContext().isIncludesTags();<a name="line.301"></a>
+<span class="sourceLineNo">302</span>  }<a name="line.302"></a>
+<span class="sourceLineNo">303</span><a name="line.303"></a>
+<span class="sourceLineNo">304</span>  protected void decodeTags() {<a 
name="line.304"></a>
+<span class="sourceLineNo">305</span>    current.tagsLength = 
currentBuffer.getShortAfterPosition(0);<a name="line.305"></a>
+<span class="sourceLineNo">306</span>    
currentBuffer.skip(Bytes.SIZEOF_SHORT);<a name="line.306"></a>
+<span class="sourceLineNo">307</span>    current.tagsOffset = 
currentBuffer.position();<a name="line.307"></a>
+<span class="sourceLineNo">308</span>    
currentBuffer.skip(current.tagsLength);<a name="line.308"></a>
+<span class="sourceLineNo">309</span>  }<a name="line.309"></a>
+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span>  private class SeekerState {<a 
name="line.311"></a>
+<span class="sourceLineNo">312</span>    /**<a name="line.312"></a>
+<span class="sourceLineNo">313</span>     * The size of a (key length, value 
length) tuple that prefixes each entry<a name="line.313"></a>
+<span class="sourceLineNo">314</span>     * in a data block.<a 
name="line.314"></a>
+<span class="sourceLineNo">315</span>     */<a name="line.315"></a>
+<span class="sourceLineNo">316</span>    public final static int 
KEY_VALUE_LEN_SIZE = 2 * Bytes.SIZEOF_INT;<a name="line.316"></a>
+<span class="sourceLineNo">317</span><a name="line.317"></a>
+<span class="sourceLineNo">318</span>    protected ByteBuff currentBuffer;<a 
name="line.318"></a>
+<span class="sourceLineNo">319</span>    protected int startOffset = -1;<a 
name="line.319"></a>
+<span class="sourceLineNo">320</span>    protected int valueOffset = -1;<a 
name="line.320"></a>
+<span class="sourceLineNo">321</span>    protected int keyLength;<a 
name="line.321"></a>
+<span class="sourceLineNo">322</span>    protected int valueLength;<a 
name="line.322"></a>
+<span class="sourceLineNo">323</span>    protected int tagsLength = 0;<a 
name="line.323"></a>
+<span class="sourceLineNo">324</span>    protected int tagsOffset = -1;<a 
name="line.324"></a>
+<span class="sourceLineNo">325</span><a name="line.325"></a>
+<span class="sourceLineNo">326</span>    protected ByteBuffer keyBuffer = 
null;<a name="line.326"></a>
+<span class="sourceLineNo">327</span>    protected long memstoreTS;<a 
name="line.327"></a>
+<span class="sourceLineNo">328</span>    protected int nextKvOffset;<a 
name="line.328"></a>
+<span class="sourceLineNo">329</span>    // buffer backed keyonlyKV<a 
name="line.329"></a>
+<span class="sourceLineNo">330</span>    private ByteBufferedKeyOnlyKeyValue 
currentKey = new ByteBufferedKeyOnlyKeyValue();<a name="line.330"></a>
+<span class="sourceLineNo">331</span><a name="line.331"></a>
+<span class="sourceLineNo">332</span>    protected boolean isValid() {<a 
name="line.332"></a>
+<span class="sourceLineNo">333</span>      return valueOffset != -1;<a 
name="line.333"></a>
+<span class="sourceLineNo">334</span>    }<a name="line.334"></a>
+<span class="sourceLineNo">335</span><a name="line.335"></a>
+<span class="sourceLineNo">336</span>    protected void invalidate() {<a 
name="line.336"></a>
+<span class="sourceLineNo">337</span>      valueOffset = -1;<a 
name="line.337"></a>
+<span class="sourceLineNo">338</span>      currentKey = new 
ByteBufferedKeyOnlyKeyValue();<a name="line.338"></a>
+<span class="sourceLineNo">339</span>      currentBuffer = null;<a 
name="line.339"></a>
+<span class="sourceLineNo">340</span>    }<a name="line.340"></a>
+<span class="sourceLineNo">341</span><a name="line.341"></a>
+<span class="sourceLineNo">342</span>    /**<a name="line.342"></a>
+<span class="sourceLineNo">343</span>     * Copy the state from the next one 
into this instance (the previous state placeholder). Used to<a 
name="line.343"></a>
+<span class="sourceLineNo">344</span>     * save the previous state when we 
are advancing the seeker to the next key/value.<a name="line.344"></a>
+<span class="sourceLineNo">345</span>     */<a name="line.345"></a>
+<span class="sourceLineNo">346</span>    protected void 
copyFromNext(SeekerState nextState) {<a name="line.346"></a>
+<span class="sourceLineNo">347</span>      keyBuffer = nextState.keyBuffer;<a 
name="line.347"></a>
+<span class="sourceLineNo">348</span>      
currentKey.setKey(nextState.keyBuffer,<a name="line.348"></a>
+<span class="sourceLineNo">349</span>          
nextState.currentKey.getRowPosition() - Bytes.SIZEOF_SHORT,<a 
name="line.349"></a>
+<span class="sourceLineNo">350</span>          nextState.keyLength);<a 
name="line.350"></a>
+<span class="sourceLineNo">351</span><a name="line.351"></a>
+<span class="sourceLineNo">352</span>      startOffset = 
nextState.startOffset;<a name="line.352"></a>
+<span class="sourceLineNo">353</span>      valueOffset = 
nextState.valueOffset;<a name="line.353"></a>
+<span class="sourceLineNo">354</span>      keyLength = nextState.keyLength;<a 
name="line.354"></a>
+<span class="sourceLineNo">355</span>      valueLength = 
nextState.valueLength;<a name="line.355"></a>
+<span class="sourceLineNo">356</span>      nextKvOffset = 
nextState.nextKvOffset;<a name="line.356"></a>
+<span class="sourceLineNo">357</span>      memstoreTS = 
nextState.memstoreTS;<a name="line.357"></a>
+<span class="sourceLineNo">358</span>      currentBuffer = 
nextState.currentBuffer;<a name="line.358"></a>
+<span class="sourceLineNo">359</span>      tagsOffset = 
nextState.tagsOffset;<a name="line.359"></a>
+<span class="sourceLineNo">360</span>      tagsLength = 
nextState.tagsLength;<a name="line.360"></a>
+<span class="sourceLineNo">361</span>    }<a name="line.361"></a>
+<span class="sourceLineNo">362</span><a name="line.362"></a>
+<span class="sourceLineNo">363</span>    @Override<a name="line.363"></a>
+<span class="sourceLineNo">364</span>    public String toString() {<a 
name="line.364"></a>
+<span class="sourceLineNo">365</span>      return 
CellUtil.getCellKeyAsString(toCell());<a name="line.365"></a>
+<span class="sourceLineNo">366</span>    }<a name="line.366"></a>
+<span class="sourceLineNo">367</span><a name="line.367"></a>
+<span class="sourceLineNo">368</span>    protected int getCellBufSize() {<a 
name="line.368"></a>
+<span class="sourceLineNo">369</span>      int kvBufSize = KEY_VALUE_LEN_SIZE 
+ keyLength + valueLength;<a name="line.369"></a>
+<span class="sourceLineNo">370</span>      if (includesTags()) {<a 
name="line.370"></a>
+<span class="sourceLineNo">371</span>        kvBufSize += Bytes.SIZEOF_SHORT + 
tagsLength;<a name="line.371"></a>
+<span class="sourceLineNo">372</span>      }<a name="line.372"></a>
+<span class="sourceLineNo">373</span>      return kvBufSize;<a 
name="line.373"></a>
+<span class="sourceLineNo">374</span>    }<a name="line.374"></a>
+<span class="sourceLineNo">375</span><a name="line.375"></a>
+<span class="sourceLineNo">376</span>    public Cell toCell() {<a 
name="line.376"></a>
+<span class="sourceLineNo">377</span>      Cell ret;<a name="line.377"></a>
+<span class="sourceLineNo">378</span>      int cellBufSize = 
getCellBufSize();<a name="line.378"></a>
+<span class="sourceLineNo">379</span>      long seqId = 0l;<a 
name="line.379"></a>
+<span class="sourceLineNo">380</span>      if (includesMvcc()) {<a 
name="line.380"></a>
+<span class="sourceLineNo">381</span>        seqId = memstoreTS;<a 
name="line.381"></a>
+<span class="sourceLineNo">382</span>      }<a name="line.382"></a>
+<span class="sourceLineNo">383</span>      if (currentBuffer.hasArray()) {<a 
name="line.383"></a>
+<span class="sourceLineNo">384</span>        // TODO : reduce the varieties of 
KV here. Check if based on a boolean<a name="line.384"></a>
+<span class="sourceLineNo">385</span>        // we can handle the 'no tags' 
case.<a name="line.385"></a>
+<span class="sourceLineNo">386</span>        if (tagsLength &gt; 0) {<a 
name="line.386"></a>
+<span class="sourceLineNo">387</span>          ret = new 
SizeCachedKeyValue(currentBuffer.array(),<a name="line.387"></a>
+<span class="sourceLineNo">388</span>              currentBuffer.arrayOffset() 
+ startOffset, cellBufSize, seqId);<a name="line.388"></a>
+<span class="sourceLineNo">389</span>        } else {<a name="line.389"></a>
+<span class="sourceLineNo">390</span>          ret = new 
SizeCachedNoTagsKeyValue(currentBuffer.array(),<a name="line.390"></a>
+<span class="sourceLineNo">391</span>              currentBuffer.arrayOffset() 
+ startOffset, cellBufSize, seqId);<a name="line.391"></a>
+<span class="sourceLineNo">392</span>        }<a name="line.392"></a>
+<span class="sourceLineNo">393</span>      } else {<a name="line.393"></a>
+<span class="sourceLineNo">394</span>        
currentBuffer.asSubByteBuffer(startOffset, cellBufSize, tmpPair);<a 
name="line.394"></a>
+<span class="sourceLineNo">395</span>        ByteBuffer buf = 
tmpPair.getFirst();<a name="line.395"></a>
+<span class="sourceLineNo">396</span>        if (buf.isDirect()) {<a 
name="line.396"></a>
+<span class="sourceLineNo">397</span>          ret = new OffheapKeyValue(buf, 
tmpPair.getSecond(), cellBufSize,<a name="line.397"></a>
+<span class="sourceLineNo">398</span>              tagsLength &gt; 0, 
seqId);<a name="line.398"></a>
+<span class="sourceLineNo">399</span>        } else {<a name="line.399"></a>
+<span class="sourceLineNo">400</span>          if (tagsLength &gt; 0) {<a 
name="line.400"></a>
+<span class="sourceLineNo">401</span>            ret = new 
SizeCachedKeyValue(buf.array(), buf.arrayOffset()<a name="line.401"></a>
+<span class="sourceLineNo">402</span>                + tmpPair.getSecond(), 
cellBufSize, seqId);<a name="line.402"></a>
+<span class="sourceLineNo">403</span>          } else {<a name="line.403"></a>
+<span class="sourceLineNo">404</span>            ret = new 
SizeCachedNoTagsKeyValue(buf.array(), buf.arrayOffset()<a name="line.404"></a>
+<span class="sourceLineNo">405</span>                + tmpPair.getSecond(), 
cellBufSize, seqId);<a name="line.405"></a>
+<span class="sourceLineNo">406</span>          }<a name="line.406"></a>
+<span class="sourceLineNo">407</span>        }<a name="line.407"></a>
+<span class="sourceLineNo">408</span>      }<a name="line.408"></a>
+<span class="sourceLineNo">409</span>      return ret;<a name="line.409"></a>
+<span class="sourceLineNo">410</span>    }<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  }<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span>}<a name="line.413"></a>
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+</pre>
+</div>
+</body>
+</html>


http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/RowIndexSeekerV1.html
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diff --git 
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@@ -0,0 +1,485 @@
+<!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 or more<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * contributor license agreements. See 
the NOTICE file distributed with this<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * work for additional information 
regarding copyright ownership. The ASF<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * licenses this file to you under the 
Apache License, Version 2.0 (the<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * "License"); you may not use this file 
except in compliance with the License.<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * You may obtain a copy of the License 
at<a name="line.7"></a>
+<span class="sourceLineNo">008</span> *<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * 
http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> * Unless required by applicable law or 
agreed to in writing, software<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * distributed under the License is 
distributed on an "AS IS" BASIS, WITHOUT<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * WARRANTIES OR CONDITIONS OF ANY KIND, 
either express or implied. See the<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * License for the specific language 
governing permissions and limitations<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * under the License.<a 
name="line.15"></a>
+<span class="sourceLineNo">016</span> */<a name="line.16"></a>
+<span class="sourceLineNo">017</span>package 
org.apache.hadoop.hbase.io.encoding;<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>import java.nio.ByteBuffer;<a 
name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import 
org.apache.hadoop.hbase.ByteBufferedCell;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import 
org.apache.hadoop.hbase.ByteBufferedKeyOnlyKeyValue;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Cell;<a 
name="line.23"></a>
+<span class="sourceLineNo">024</span>import 
org.apache.hadoop.hbase.CellComparator;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import 
org.apache.hadoop.hbase.CellUtil;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import 
org.apache.hadoop.hbase.HConstants;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import 
org.apache.hadoop.hbase.KeyValue;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import 
org.apache.hadoop.hbase.OffheapKeyValue;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import 
org.apache.hadoop.hbase.SizeCachedKeyValue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import 
org.apache.hadoop.hbase.SizeCachedNoTagsKeyValue;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import 
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import 
org.apache.hadoop.hbase.io.encoding.DataBlockEncoder.EncodedSeeker;<a 
name="line.32"></a>
+<span class="sourceLineNo">033</span>import 
org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import 
org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import 
org.apache.hadoop.hbase.util.Bytes;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import 
org.apache.hadoop.hbase.util.ObjectIntPair;<a name="line.36"></a>
+<span class="sourceLineNo">037</span><a name="line.37"></a>
+<span class="sourceLineNo">038</span>@InterfaceAudience.Private<a 
name="line.38"></a>
+<span class="sourceLineNo">039</span>public class RowIndexSeekerV1 implements 
EncodedSeeker {<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>  private HFileBlockDecodingContext 
decodingCtx;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>  private final CellComparator 
comparator;<a name="line.42"></a>
+<span class="sourceLineNo">043</span><a name="line.43"></a>
+<span class="sourceLineNo">044</span>  // A temp pair object which will be 
reused by ByteBuff#asSubByteBuffer calls. This avoids too<a name="line.44"></a>
+<span class="sourceLineNo">045</span>  // many object creations.<a 
name="line.45"></a>
+<span class="sourceLineNo">046</span>  protected final 
ObjectIntPair&lt;ByteBuffer&gt; tmpPair = new 
ObjectIntPair&lt;ByteBuffer&gt;();<a name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span>  private ByteBuff currentBuffer;<a 
name="line.48"></a>
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SeekerState(); // always valid<a name="line.49"></a>
+<span class="sourceLineNo">050</span>  private SeekerState previous = new 
SeekerState(); // may not be valid<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span>  private int rowNumber;<a 
name="line.52"></a>
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name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
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comparator,<a name="line.55"></a>
+<span class="sourceLineNo">056</span>      HFileBlockDecodingContext 
decodingCtx) {<a name="line.56"></a>
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name="line.57"></a>
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+<span class="sourceLineNo">061</span>  @Override<a name="line.61"></a>
+<span class="sourceLineNo">062</span>  public void setCurrentBuffer(ByteBuff 
buffer) {<a name="line.62"></a>
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buffer.getInt(buffer.limit() - Bytes.SIZEOF_INT);<a name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span>    // Data part<a name="line.65"></a>
+<span class="sourceLineNo">066</span>    ByteBuff dup = buffer.duplicate();<a 
name="line.66"></a>
+<span class="sourceLineNo">067</span>    dup.position(buffer.position());<a 
name="line.67"></a>
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onDiskSize);<a name="line.68"></a>
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name="line.69"></a>
+<span class="sourceLineNo">070</span>    current.currentBuffer = 
currentBuffer;<a name="line.70"></a>
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name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span>    // Row offset<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    rowNumber = buffer.getInt();<a 
name="line.74"></a>
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Bytes.SIZEOF_INT * rowNumber;<a name="line.75"></a>
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buffer.duplicate();<a name="line.76"></a>
+<span class="sourceLineNo">077</span>    rowDup.position(buffer.position());<a 
name="line.77"></a>
+<span class="sourceLineNo">078</span>    rowDup.limit(buffer.position() + 
totalRowOffsetsLength);<a name="line.78"></a>
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name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
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name="line.85"></a>
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name="line.86"></a>
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KeyValue.KeyOnlyKeyValue(current.keyBuffer.array(),<a name="line.87"></a>
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+ current.keyBuffer.position(),<a name="line.88"></a>
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byte[current.keyLength];<a name="line.91"></a>
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ByteBufferUtils.copyFromBufferToArray(key, current.keyBuffer,<a 
name="line.92"></a>
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0, current.keyLength);<a name="line.93"></a>
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KeyValue.KeyOnlyKeyValue(key, 0, current.keyLength);<a name="line.94"></a>
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+<span class="sourceLineNo">096</span>  }<a name="line.96"></a>
+<span class="sourceLineNo">097</span><a name="line.97"></a>
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+<span class="sourceLineNo">099</span>  public ByteBuffer getValueShallowCopy() 
{<a name="line.99"></a>
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currentBuffer.asSubByteBuffer(current.valueOffset, current.valueLength,<a 
name="line.100"></a>
+<span class="sourceLineNo">101</span>        tmpPair);<a name="line.101"></a>
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tmpPair.getFirst().duplicate();<a name="line.102"></a>
+<span class="sourceLineNo">103</span>    dup.position(tmpPair.getSecond());<a 
name="line.103"></a>
+<span class="sourceLineNo">104</span>    dup.limit(tmpPair.getSecond() + 
current.valueLength);<a name="line.104"></a>
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name="line.105"></a>
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+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span>  @Override<a name="line.108"></a>
+<span class="sourceLineNo">109</span>  public Cell getCell() {<a 
name="line.109"></a>
+<span class="sourceLineNo">110</span>    return current.toCell();<a 
name="line.110"></a>
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+<span class="sourceLineNo">113</span>  @Override<a name="line.113"></a>
+<span class="sourceLineNo">114</span>  public void rewind() {<a 
name="line.114"></a>
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name="line.115"></a>
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+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span>  @Override<a name="line.119"></a>
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name="line.120"></a>
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{<a name="line.121"></a>
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+<span class="sourceLineNo">124</span>    decodeNext();<a name="line.124"></a>
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name="line.125"></a>
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+<span class="sourceLineNo">127</span>  }<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span>  private int binarySearch(Cell seekCell, 
boolean seekBefore) {<a name="line.129"></a>
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+<span class="sourceLineNo">131</span>    int high = rowNumber - 1;<a 
name="line.131"></a>
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1;<a name="line.132"></a>
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name="line.134"></a>
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1;<a name="line.135"></a>
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name="line.136"></a>
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seekCell);<a name="line.137"></a>
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name="line.138"></a>
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name="line.139"></a>
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name="line.140"></a>
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name="line.141"></a>
+<span class="sourceLineNo">142</span>      } else {<a name="line.142"></a>
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name="line.143"></a>
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name="line.144"></a>
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name="line.145"></a>
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name="line.147"></a>
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+<span class="sourceLineNo">150</span>    }<a name="line.150"></a>
+<span class="sourceLineNo">151</span>    // key not found.<a 
name="line.151"></a>
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name="line.152"></a>
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name="line.153"></a>
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+<span class="sourceLineNo">158</span><a name="line.158"></a>
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Cell seekCell) {<a name="line.159"></a>
+<span class="sourceLineNo">160</span>    if (seekCell instanceof 
ByteBufferedCell) {<a name="line.160"></a>
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ByteBufferUtils.compareTo(row, row.position(), row.remaining(),<a 
name="line.161"></a>
+<span class="sourceLineNo">162</span>          ((ByteBufferedCell) 
seekCell).getRowByteBuffer(),<a name="line.162"></a>
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seekCell).getRowPosition(),<a name="line.163"></a>
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name="line.164"></a>
+<span class="sourceLineNo">165</span>    } else {<a name="line.165"></a>
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ByteBufferUtils.compareTo(row, row.position(), row.remaining(),<a 
name="line.166"></a>
+<span class="sourceLineNo">167</span>          seekCell.getRowArray(), 
seekCell.getRowOffset(),<a name="line.167"></a>
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name="line.168"></a>
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+<span class="sourceLineNo">171</span><a name="line.171"></a>
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{<a name="line.172"></a>
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rowOffsets.getIntAfterPosition(index * Bytes.SIZEOF_INT);<a name="line.173"></a>
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currentBuffer.duplicate();<a name="line.174"></a>
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Bytes.SIZEOF_LONG);<a name="line.175"></a>
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block.asSubByteBuffer(block.position(), rowLen, tmpPair);<a name="line.177"></a>
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tmpPair.getFirst();<a name="line.178"></a>
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row.position(tmpPair.getSecond()).limit(tmpPair.getSecond() + rowLen);<a 
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seekCell, boolean seekBefore) {<a name="line.184"></a>
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// using optimized index key<a name="line.188"></a>
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rowOffsets.getIntAfterPosition(index * Bytes.SIZEOF_INT);<a name="line.190"></a>
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comparator.compareKeyIgnoresMvcc(seekCell, current.currentKey);<a 
name="line.197"></a>
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name="line.198"></a>
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name="line.199"></a>
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name="line.200"></a>
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has to ensure that we are not at the<a name="line.201"></a>
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name="line.202"></a>
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IllegalStateException("Cannot seekBefore if "<a name="line.203"></a>
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first key in the block: key="<a name="line.204"></a>
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Bytes.toStringBinary(seekCell.getRowArray()));<a name="line.205"></a>
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HConstants.INDEX_KEY_MAGIC; // using optimized index key<a name="line.217"></a>
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+<span class="sourceLineNo">221</span><a name="line.221"></a>
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available<a name="line.222"></a>
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{<a name="line.223"></a>
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an exact match<a name="line.231"></a>
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name="line.235"></a>
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name="line.236"></a>
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IllegalStateException("Can move back only once and not in first key in the 
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currentBuffer.position(current.nextKvOffset);<a name="line.245"></a>
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comparator, Cell key) {<a name="line.250"></a>
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comparator.compareKeyIgnoresMvcc(key, current.currentKey);<a 
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position) {<a name="line.259"></a>
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+<span class="sourceLineNo">264</span><a name="line.264"></a>
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name="line.265"></a>
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currentBuffer.position();<a name="line.266"></a>
+<span class="sourceLineNo">267</span>    long ll = 
currentBuffer.getLongAfterPosition(0);<a name="line.267"></a>
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length and bottom int as value length<a name="line.268"></a>
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&gt;&gt; Integer.SIZE);<a name="line.269"></a>
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(Bytes.MASK_FOR_LOWER_INT_IN_LONG ^ ll);<a name="line.270"></a>
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currentBuffer.skip(Bytes.SIZEOF_LONG);<a name="line.271"></a>
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currentBuffer.asSubByteBuffer(currentBuffer.position(), current.keyLength,<a 
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this.decodingCtx.getHFileContext().isIncludesMvcc();<a name="line.297"></a>
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this.decodingCtx.getHFileContext().isIncludesTags();<a name="line.301"></a>
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name="line.304"></a>
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currentBuffer.getShortAfterPosition(0);<a name="line.305"></a>
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currentBuffer.skip(Bytes.SIZEOF_SHORT);<a name="line.306"></a>
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currentBuffer.skip(current.tagsLength);<a name="line.308"></a>
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+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span>  private class SeekerState {<a 
name="line.311"></a>
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name="line.314"></a>
+<span class="sourceLineNo">315</span>     */<a name="line.315"></a>
+<span class="sourceLineNo">316</span>    public final static int 
KEY_VALUE_LEN_SIZE = 2 * Bytes.SIZEOF_INT;<a name="line.316"></a>
+<span class="sourceLineNo">317</span><a name="line.317"></a>
+<span class="sourceLineNo">318</span>    protected ByteBuff currentBuffer;<a 
name="line.318"></a>
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name="line.319"></a>
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null;<a name="line.326"></a>
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name="line.327"></a>
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name="line.329"></a>
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currentKey = new ByteBufferedKeyOnlyKeyValue();<a name="line.330"></a>
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name="line.343"></a>
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are advancing the seeker to the next key/value.<a name="line.344"></a>
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copyFromNext(SeekerState nextState) {<a name="line.346"></a>
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currentKey.setKey(nextState.keyBuffer,<a name="line.348"></a>
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nextState.currentKey.getRowPosition() - Bytes.SIZEOF_SHORT,<a 
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nextState.startOffset;<a name="line.352"></a>
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nextState.valueOffset;<a name="line.353"></a>
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nextState.valueLength;<a name="line.355"></a>
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nextState.nextKvOffset;<a name="line.356"></a>
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nextState.memstoreTS;<a name="line.357"></a>
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nextState.currentBuffer;<a name="line.358"></a>
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nextState.tagsOffset;<a name="line.359"></a>
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nextState.tagsLength;<a name="line.360"></a>
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+<span class="sourceLineNo">363</span>    @Override<a name="line.363"></a>
+<span class="sourceLineNo">364</span>    public String toString() {<a 
name="line.364"></a>
+<span class="sourceLineNo">365</span>      return 
CellUtil.getCellKeyAsString(toCell());<a name="line.365"></a>
+<span class="sourceLineNo">366</span>    }<a name="line.366"></a>
+<span class="sourceLineNo">367</span><a name="line.367"></a>
+<span class="sourceLineNo">368</span>    protected int getCellBufSize() {<a 
name="line.368"></a>
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+ keyLength + valueLength;<a name="line.369"></a>
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name="line.370"></a>
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tagsLength;<a name="line.371"></a>
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name="line.373"></a>
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+<span class="sourceLineNo">376</span>    public Cell toCell() {<a 
name="line.376"></a>
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+<span class="sourceLineNo">378</span>      int cellBufSize = 
getCellBufSize();<a name="line.378"></a>
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name="line.379"></a>
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name="line.380"></a>
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name="line.381"></a>
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name="line.383"></a>
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KV here. Check if based on a boolean<a name="line.384"></a>
+<span class="sourceLineNo">385</span>        // we can handle the 'no tags' 
case.<a name="line.385"></a>
+<span class="sourceLineNo">386</span>        if (tagsLength &gt; 0) {<a 
name="line.386"></a>
+<span class="sourceLineNo">387</span>          ret = new 
SizeCachedKeyValue(currentBuffer.array(),<a name="line.387"></a>
+<span class="sourceLineNo">388</span>              currentBuffer.arrayOffset() 
+ startOffset, cellBufSize, seqId);<a name="line.388"></a>
+<span class="sourceLineNo">389</span>        } else {<a name="line.389"></a>
+<span class="sourceLineNo">390</span>          ret = new 
SizeCachedNoTagsKeyValue(currentBuffer.array(),<a name="line.390"></a>
+<span class="sourceLineNo">391</span>              currentBuffer.arrayOffset() 
+ startOffset, cellBufSize, seqId);<a name="line.391"></a>
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+<span class="sourceLineNo">393</span>      } else {<a name="line.393"></a>
+<span class="sourceLineNo">394</span>        
currentBuffer.asSubByteBuffer(startOffset, cellBufSize, tmpPair);<a 
name="line.394"></a>
+<span class="sourceLineNo">395</span>        ByteBuffer buf = 
tmpPair.getFirst();<a name="line.395"></a>
+<span class="sourceLineNo">396</span>        if (buf.isDirect()) {<a 
name="line.396"></a>
+<span class="sourceLineNo">397</span>          ret = new OffheapKeyValue(buf, 
tmpPair.getSecond(), cellBufSize,<a name="line.397"></a>
+<span class="sourceLineNo">398</span>              tagsLength &gt; 0, 
seqId);<a name="line.398"></a>
+<span class="sourceLineNo">399</span>        } else {<a name="line.399"></a>
+<span class="sourceLineNo">400</span>          if (tagsLength &gt; 0) {<a 
name="line.400"></a>
+<span class="sourceLineNo">401</span>            ret = new 
SizeCachedKeyValue(buf.array(), buf.arrayOffset()<a name="line.401"></a>
+<span class="sourceLineNo">402</span>                + tmpPair.getSecond(), 
cellBufSize, seqId);<a name="line.402"></a>
+<span class="sourceLineNo">403</span>          } else {<a name="line.403"></a>
+<span class="sourceLineNo">404</span>            ret = new 
SizeCachedNoTagsKeyValue(buf.array(), buf.arrayOffset()<a name="line.404"></a>
+<span class="sourceLineNo">405</span>                + tmpPair.getSecond(), 
cellBufSize, seqId);<a name="line.405"></a>
+<span class="sourceLineNo">406</span>          }<a name="line.406"></a>
+<span class="sourceLineNo">407</span>        }<a name="line.407"></a>
+<span class="sourceLineNo">408</span>      }<a name="line.408"></a>
+<span class="sourceLineNo">409</span>      return ret;<a name="line.409"></a>
+<span class="sourceLineNo">410</span>    }<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  }<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span>}<a name="line.413"></a>
+
+
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+
+</pre>
+</div>
+</body>
+</html>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.Counters.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.Counters.html
 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.Counters.html
index 65422ba..176c212 100644
--- 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.Counters.html
+++ 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.Counters.html
@@ -88,7 +88,7 @@
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 <span class="sourceLineNo">084</span>  static String peerId = null;<a 
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 <span class="sourceLineNo">085</span>  static String rowPrefixes = null;<a 
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 <span class="sourceLineNo">086</span><a name="line.86"></a>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.html
 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.html
index 65422ba..176c212 100644
--- 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.html
+++ 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.Verifier.html
@@ -88,7 +88,7 @@
 <span class="sourceLineNo">080</span>  static int versions = -1;<a 
name="line.80"></a>
 <span class="sourceLineNo">081</span>  static String tableName = null;<a 
name="line.81"></a>
 <span class="sourceLineNo">082</span>  static String families = null;<a 
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-<span class="sourceLineNo">083</span>  static String delimiter = null;<a 
name="line.83"></a>
+<span class="sourceLineNo">083</span>  static String delimiter = "";<a 
name="line.83"></a>
 <span class="sourceLineNo">084</span>  static String peerId = null;<a 
name="line.84"></a>
 <span class="sourceLineNo">085</span>  static String rowPrefixes = null;<a 
name="line.85"></a>
 <span class="sourceLineNo">086</span><a name="line.86"></a>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.html
 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.html
index 65422ba..176c212 100644
--- 
a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.html
+++ 
b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/replication/VerifyReplication.html
@@ -88,7 +88,7 @@
 <span class="sourceLineNo">080</span>  static int versions = -1;<a 
name="line.80"></a>
 <span class="sourceLineNo">081</span>  static String tableName = null;<a 
name="line.81"></a>
 <span class="sourceLineNo">082</span>  static String families = null;<a 
name="line.82"></a>
-<span class="sourceLineNo">083</span>  static String delimiter = null;<a 
name="line.83"></a>
+<span class="sourceLineNo">083</span>  static String delimiter = "";<a 
name="line.83"></a>
 <span class="sourceLineNo">084</span>  static String peerId = null;<a 
name="line.84"></a>
 <span class="sourceLineNo">085</span>  static String rowPrefixes = null;<a 
name="line.85"></a>
 <span class="sourceLineNo">086</span><a name="line.86"></a>

[17/52] [partial] hbase-site git commit: Published site at 950d547dae684155020edb879a343bee1bf18e97.

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