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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_javadoccomment"> * Copyright The Apache Software Foundation</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_javadoccomment"> * contributor license agreements. See the NOTICE file distributed with this</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_javadoccomment"> * work for additional information regarding copyright ownership. The ASF</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_javadoccomment"> * licenses this file to you under the Apache License, Version 2.0 (the</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance with the License.</em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_javadoccomment"> * You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <em class="jxr_javadoccomment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="17" href="#17">17</a>  <em class="jxr_javadoccomment"> * under the License.</em>
<a class="jxr_linenumber" name="18" href="#18">18</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">package</strong> org.apache.hadoop.hbase.regionserver;
<a class="jxr_linenumber" name="20" href="#20">20</a>  
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertEquals;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertFalse;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertTrue;
<a class="jxr_linenumber" name="24" href="#24">24</a>  
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.util.NavigableSet;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.util.Random;
<a class="jxr_linenumber" name="32" href="#32">32</a>  
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FileSystem;
<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.Path;
<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.Cell;
<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.HBaseConfiguration;
<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.HBaseTestingUtility;
<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.HConstants;
<a class="jxr_linenumber" name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.KeyValue;
<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.MediumTests;
<a class="jxr_linenumber" name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Durability;
<a class="jxr_linenumber" name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Put;
<a class="jxr_linenumber" name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Result;
<a class="jxr_linenumber" name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Scan;
<a class="jxr_linenumber" name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
<a class="jxr_linenumber" name="49" href="#49">49</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.Filter;
<a class="jxr_linenumber" name="50" href="#50">50</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.FilterList;
<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.FilterList.Operator;
<a class="jxr_linenumber" name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.PageFilter;
<a class="jxr_linenumber" name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
<a class="jxr_linenumber" name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
<a class="jxr_linenumber" name="55" href="#55">55</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.CacheConfig;
<a class="jxr_linenumber" name="56" href="#56">56</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.HFileContext;
<a class="jxr_linenumber" name="57" href="#57">57</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.HFileContextBuilder;
<a class="jxr_linenumber" name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes;
<a class="jxr_linenumber" name="59" href="#59">59</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Pair;
<a class="jxr_linenumber" name="60" href="#60">60</a>  <strong class="jxr_keyword">import</strong> org.junit.Test;
<a class="jxr_linenumber" name="61" href="#61">61</a>  <strong class="jxr_keyword">import</strong> org.junit.experimental.categories.Category;
<a class="jxr_linenumber" name="62" href="#62">62</a>  
<a class="jxr_linenumber" name="63" href="#63">63</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.Lists;
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment"> * Test cases against ReversibleKeyValueScanner</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  @Category(MediumTests.<strong class="jxr_keyword">class</strong>)
<a class="jxr_linenumber" name="68" href="#68">68</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TestReversibleScanners.html">TestReversibleScanners</a> {
<a class="jxr_linenumber" name="69" href="#69">69</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(TestReversibleScanners.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="70" href="#70">70</a>    <a href="../../../../../org/apache/hadoop/hbase/HBaseTestingUtility.html">HBaseTestingUtility</a> TEST_UTIL = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/HBaseTestingUtility.html">HBaseTestingUtility</a>();
<a class="jxr_linenumber" name="71" href="#71">71</a>  
<a class="jxr_linenumber" name="72" href="#72">72</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[] FAMILYNAME = Bytes.toBytes(<span class="jxr_string">"testCf"</span>);
<a class="jxr_linenumber" name="73" href="#73">73</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">long</strong> TS = System.currentTimeMillis();
<a class="jxr_linenumber" name="74" href="#74">74</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> MAXMVCC = 7;
<a class="jxr_linenumber" name="75" href="#75">75</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[] ROW = Bytes.toBytes(<span class="jxr_string">"testRow"</span>);
<a class="jxr_linenumber" name="76" href="#76">76</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ROWSIZE = 200;
<a class="jxr_linenumber" name="77" href="#77">77</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[][] ROWS = makeN(ROW, ROWSIZE);
<a class="jxr_linenumber" name="78" href="#78">78</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[] QUAL = Bytes.toBytes(<span class="jxr_string">"testQual"</span>);
<a class="jxr_linenumber" name="79" href="#79">79</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> QUALSIZE = 5;
<a class="jxr_linenumber" name="80" href="#80">80</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[][] QUALS = makeN(QUAL, QUALSIZE);
<a class="jxr_linenumber" name="81" href="#81">81</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[] VALUE = Bytes.toBytes(<span class="jxr_string">"testValue"</span>);
<a class="jxr_linenumber" name="82" href="#82">82</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> VALUESIZE = 3;
<a class="jxr_linenumber" name="83" href="#83">83</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[][] VALUES = makeN(VALUE, VALUESIZE);
<a class="jxr_linenumber" name="84" href="#84">84</a>  
<a class="jxr_linenumber" name="85" href="#85">85</a>    @Test
<a class="jxr_linenumber" name="86" href="#86">86</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testReversibleStoreFileScanner() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="87" href="#87">87</a>      FileSystem fs = TEST_UTIL.getTestFileSystem();
<a class="jxr_linenumber" name="88" href="#88">88</a>      Path hfilePath = <strong class="jxr_keyword">new</strong> Path(<strong class="jxr_keyword">new</strong> Path(
<a class="jxr_linenumber" name="89" href="#89">89</a>          TEST_UTIL.getDataTestDir(<span class="jxr_string">"testReversibleStoreFileScanner"</span>),
<a class="jxr_linenumber" name="90" href="#90">90</a>          <span class="jxr_string">"regionname"</span>), <span class="jxr_string">"familyname"</span>);
<a class="jxr_linenumber" name="91" href="#91">91</a>      CacheConfig cacheConf = <strong class="jxr_keyword">new</strong> CacheConfig(TEST_UTIL.getConfiguration());
<a class="jxr_linenumber" name="92" href="#92">92</a>      <strong class="jxr_keyword">for</strong> (DataBlockEncoding encoding : DataBlockEncoding.values()) {
<a class="jxr_linenumber" name="93" href="#93">93</a>        HFileContextBuilder hcBuilder = <strong class="jxr_keyword">new</strong> HFileContextBuilder();
<a class="jxr_linenumber" name="94" href="#94">94</a>        hcBuilder.withBlockSize(2 * 1024);
<a class="jxr_linenumber" name="95" href="#95">95</a>        hcBuilder.withDataBlockEncoding(encoding);
<a class="jxr_linenumber" name="96" href="#96">96</a>        HFileContext hFileContext = hcBuilder.build();
<a class="jxr_linenumber" name="97" href="#97">97</a>        StoreFile.Writer writer = <strong class="jxr_keyword">new</strong> StoreFile.WriterBuilder(
<a class="jxr_linenumber" name="98" href="#98">98</a>            TEST_UTIL.getConfiguration(), cacheConf, fs).withOutputDir(hfilePath)
<a class="jxr_linenumber" name="99" href="#99">99</a>            .withFileContext(hFileContext).build();
<a class="jxr_linenumber" name="100" href="#100">100</a>       writeStoreFile(writer);
<a class="jxr_linenumber" name="101" href="#101">101</a> 
<a class="jxr_linenumber" name="102" href="#102">102</a>       StoreFile sf = <strong class="jxr_keyword">new</strong> StoreFile(fs, writer.getPath(),
<a class="jxr_linenumber" name="103" href="#103">103</a>           TEST_UTIL.getConfiguration(), cacheConf, BloomType.NONE);
<a class="jxr_linenumber" name="104" href="#104">104</a> 
<a class="jxr_linenumber" name="105" href="#105">105</a>       List&lt;StoreFileScanner&gt; scanners = StoreFileScanner
<a class="jxr_linenumber" name="106" href="#106">106</a>           .getScannersForStoreFiles(Collections.singletonList(sf), false, <strong class="jxr_keyword">true</strong>,
<a class="jxr_linenumber" name="107" href="#107">107</a>               false, Long.MAX_VALUE);
<a class="jxr_linenumber" name="108" href="#108">108</a>       StoreFileScanner scanner = scanners.get(0);
<a class="jxr_linenumber" name="109" href="#109">109</a>       seekTestOfReversibleKeyValueScanner(scanner);
<a class="jxr_linenumber" name="110" href="#110">110</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> readPoint = 0; readPoint &lt; MAXMVCC; readPoint++) {
<a class="jxr_linenumber" name="111" href="#111">111</a>         LOG.info(<span class="jxr_string">"Setting read point to "</span> + readPoint);
<a class="jxr_linenumber" name="112" href="#112">112</a>         scanners = StoreFileScanner.getScannersForStoreFiles(
<a class="jxr_linenumber" name="113" href="#113">113</a>             Collections.singletonList(sf), false, <strong class="jxr_keyword">true</strong>, false, readPoint);
<a class="jxr_linenumber" name="114" href="#114">114</a>         seekTestOfReversibleKeyValueScannerWithMVCC(scanners.get(0), readPoint);
<a class="jxr_linenumber" name="115" href="#115">115</a>       }
<a class="jxr_linenumber" name="116" href="#116">116</a>     }
<a class="jxr_linenumber" name="117" href="#117">117</a> 
<a class="jxr_linenumber" name="118" href="#118">118</a>   }
<a class="jxr_linenumber" name="119" href="#119">119</a> 
<a class="jxr_linenumber" name="120" href="#120">120</a>   @Test
<a class="jxr_linenumber" name="121" href="#121">121</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testReversibleMemstoreScanner() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="122" href="#122">122</a>     MemStore memstore = <strong class="jxr_keyword">new</strong> MemStore();
<a class="jxr_linenumber" name="123" href="#123">123</a>     writeMemstore(memstore);
<a class="jxr_linenumber" name="124" href="#124">124</a>     List&lt;KeyValueScanner&gt; scanners = memstore.getScanners(Long.MAX_VALUE);
<a class="jxr_linenumber" name="125" href="#125">125</a>     seekTestOfReversibleKeyValueScanner(scanners.get(0));
<a class="jxr_linenumber" name="126" href="#126">126</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> readPoint = 0; readPoint &lt; MAXMVCC; readPoint++) {
<a class="jxr_linenumber" name="127" href="#127">127</a>       LOG.info(<span class="jxr_string">"Setting read point to "</span> + readPoint);
<a class="jxr_linenumber" name="128" href="#128">128</a>       scanners = memstore.getScanners(readPoint);
<a class="jxr_linenumber" name="129" href="#129">129</a>       seekTestOfReversibleKeyValueScannerWithMVCC(scanners.get(0), readPoint);
<a class="jxr_linenumber" name="130" href="#130">130</a>     }
<a class="jxr_linenumber" name="131" href="#131">131</a> 
<a class="jxr_linenumber" name="132" href="#132">132</a>   }
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>   @Test
<a class="jxr_linenumber" name="135" href="#135">135</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testReversibleKeyValueHeap() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="136" href="#136">136</a>     <em class="jxr_comment">// write data to one memstore and two store files</em>
<a class="jxr_linenumber" name="137" href="#137">137</a>     FileSystem fs = TEST_UTIL.getTestFileSystem();
<a class="jxr_linenumber" name="138" href="#138">138</a>     Path hfilePath = <strong class="jxr_keyword">new</strong> Path(<strong class="jxr_keyword">new</strong> Path(
<a class="jxr_linenumber" name="139" href="#139">139</a>         TEST_UTIL.getDataTestDir(<span class="jxr_string">"testReversibleKeyValueHeap"</span>), <span class="jxr_string">"regionname"</span>),
<a class="jxr_linenumber" name="140" href="#140">140</a>         <span class="jxr_string">"familyname"</span>);
<a class="jxr_linenumber" name="141" href="#141">141</a>     CacheConfig cacheConf = <strong class="jxr_keyword">new</strong> CacheConfig(TEST_UTIL.getConfiguration());
<a class="jxr_linenumber" name="142" href="#142">142</a>     HFileContextBuilder hcBuilder = <strong class="jxr_keyword">new</strong> HFileContextBuilder();
<a class="jxr_linenumber" name="143" href="#143">143</a>     hcBuilder.withBlockSize(2 * 1024);
<a class="jxr_linenumber" name="144" href="#144">144</a>     HFileContext hFileContext = hcBuilder.build();
<a class="jxr_linenumber" name="145" href="#145">145</a>     StoreFile.Writer writer1 = <strong class="jxr_keyword">new</strong> StoreFile.WriterBuilder(
<a class="jxr_linenumber" name="146" href="#146">146</a>         TEST_UTIL.getConfiguration(), cacheConf, fs).withOutputDir(
<a class="jxr_linenumber" name="147" href="#147">147</a>         hfilePath).withFileContext(hFileContext).build();
<a class="jxr_linenumber" name="148" href="#148">148</a>     StoreFile.Writer writer2 = <strong class="jxr_keyword">new</strong> StoreFile.WriterBuilder(
<a class="jxr_linenumber" name="149" href="#149">149</a>         TEST_UTIL.getConfiguration(), cacheConf, fs).withOutputDir(
<a class="jxr_linenumber" name="150" href="#150">150</a>         hfilePath).withFileContext(hFileContext).build();
<a class="jxr_linenumber" name="151" href="#151">151</a> 
<a class="jxr_linenumber" name="152" href="#152">152</a>     MemStore memstore = <strong class="jxr_keyword">new</strong> MemStore();
<a class="jxr_linenumber" name="153" href="#153">153</a>     writeMemstoreAndStoreFiles(memstore, <strong class="jxr_keyword">new</strong> StoreFile.Writer[] { writer1,
<a class="jxr_linenumber" name="154" href="#154">154</a>         writer2 });
<a class="jxr_linenumber" name="155" href="#155">155</a> 
<a class="jxr_linenumber" name="156" href="#156">156</a>     StoreFile sf1 = <strong class="jxr_keyword">new</strong> StoreFile(fs, writer1.getPath(),
<a class="jxr_linenumber" name="157" href="#157">157</a>         TEST_UTIL.getConfiguration(), cacheConf, BloomType.NONE);
<a class="jxr_linenumber" name="158" href="#158">158</a> 
<a class="jxr_linenumber" name="159" href="#159">159</a>     StoreFile sf2 = <strong class="jxr_keyword">new</strong> StoreFile(fs, writer2.getPath(),
<a class="jxr_linenumber" name="160" href="#160">160</a>         TEST_UTIL.getConfiguration(), cacheConf, BloomType.NONE);
<a class="jxr_linenumber" name="161" href="#161">161</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">     * Test without MVCC</em>
<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">int</strong> startRowNum = ROWSIZE / 2;
<a class="jxr_linenumber" name="165" href="#165">165</a>     ReversedKeyValueHeap kvHeap = getReversibleKeyValueHeap(memstore, sf1, sf2,
<a class="jxr_linenumber" name="166" href="#166">166</a>         ROWS[startRowNum], MAXMVCC);
<a class="jxr_linenumber" name="167" href="#167">167</a>     internalTestSeekAndNextForReversibleKeyValueHeap(kvHeap, startRowNum);
<a class="jxr_linenumber" name="168" href="#168">168</a> 
<a class="jxr_linenumber" name="169" href="#169">169</a>     startRowNum = ROWSIZE - 1;
<a class="jxr_linenumber" name="170" href="#170">170</a>     kvHeap = getReversibleKeyValueHeap(memstore, sf1, sf2,
<a class="jxr_linenumber" name="171" href="#171">171</a>         HConstants.EMPTY_START_ROW, MAXMVCC);
<a class="jxr_linenumber" name="172" href="#172">172</a>     internalTestSeekAndNextForReversibleKeyValueHeap(kvHeap, startRowNum);
<a class="jxr_linenumber" name="173" href="#173">173</a> 
<a class="jxr_linenumber" name="174" href="#174">174</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_javadoccomment">     * Test with MVCC</em>
<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="177" href="#177">177</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> readPoint = 0; readPoint &lt; MAXMVCC; readPoint++) {
<a class="jxr_linenumber" name="178" href="#178">178</a>       LOG.info(<span class="jxr_string">"Setting read point to "</span> + readPoint);
<a class="jxr_linenumber" name="179" href="#179">179</a>       startRowNum = ROWSIZE - 1;
<a class="jxr_linenumber" name="180" href="#180">180</a>       kvHeap = getReversibleKeyValueHeap(memstore, sf1, sf2,
<a class="jxr_linenumber" name="181" href="#181">181</a>           HConstants.EMPTY_START_ROW, readPoint);
<a class="jxr_linenumber" name="182" href="#182">182</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startRowNum; i &gt;= 0; i--) {
<a class="jxr_linenumber" name="183" href="#183">183</a>         <strong class="jxr_keyword">if</strong> (i - 2 &lt; 0) <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="184" href="#184">184</a>         i = i - 2;
<a class="jxr_linenumber" name="185" href="#185">185</a>         kvHeap.seekToPreviousRow(KeyValue.createFirstOnRow(ROWS[i + 1]));
<a class="jxr_linenumber" name="186" href="#186">186</a>         Pair&lt;Integer, Integer&gt; nextReadableNum = getNextReadableNumWithBackwardScan(
<a class="jxr_linenumber" name="187" href="#187">187</a>             i, 0, readPoint);
<a class="jxr_linenumber" name="188" href="#188">188</a>         <strong class="jxr_keyword">if</strong> (nextReadableNum == <strong class="jxr_keyword">null</strong>) <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="189" href="#189">189</a>         KeyValue expecedKey = makeKV(nextReadableNum.getFirst(),
<a class="jxr_linenumber" name="190" href="#190">190</a>             nextReadableNum.getSecond());
<a class="jxr_linenumber" name="191" href="#191">191</a>         assertEquals(expecedKey, kvHeap.peek());
<a class="jxr_linenumber" name="192" href="#192">192</a>         i = nextReadableNum.getFirst();
<a class="jxr_linenumber" name="193" href="#193">193</a>         <strong class="jxr_keyword">int</strong> qualNum = nextReadableNum.getSecond();
<a class="jxr_linenumber" name="194" href="#194">194</a>         <strong class="jxr_keyword">if</strong> (qualNum + 1 &lt; QUALSIZE) {
<a class="jxr_linenumber" name="195" href="#195">195</a>           kvHeap.backwardSeek(makeKV(i, qualNum + 1));
<a class="jxr_linenumber" name="196" href="#196">196</a>           nextReadableNum = getNextReadableNumWithBackwardScan(i, qualNum + 1,
<a class="jxr_linenumber" name="197" href="#197">197</a>               readPoint);
<a class="jxr_linenumber" name="198" href="#198">198</a>           <strong class="jxr_keyword">if</strong> (nextReadableNum == <strong class="jxr_keyword">null</strong>) <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="199" href="#199">199</a>           expecedKey = makeKV(nextReadableNum.getFirst(),
<a class="jxr_linenumber" name="200" href="#200">200</a>               nextReadableNum.getSecond());
<a class="jxr_linenumber" name="201" href="#201">201</a>           assertEquals(expecedKey, kvHeap.peek());
<a class="jxr_linenumber" name="202" href="#202">202</a>           i = nextReadableNum.getFirst();
<a class="jxr_linenumber" name="203" href="#203">203</a>           qualNum = nextReadableNum.getSecond();
<a class="jxr_linenumber" name="204" href="#204">204</a>         }
<a class="jxr_linenumber" name="205" href="#205">205</a> 
<a class="jxr_linenumber" name="206" href="#206">206</a>         kvHeap.next();
<a class="jxr_linenumber" name="207" href="#207">207</a> 
<a class="jxr_linenumber" name="208" href="#208">208</a>         <strong class="jxr_keyword">if</strong> (qualNum + 1 &gt;= QUALSIZE) {
<a class="jxr_linenumber" name="209" href="#209">209</a>           nextReadableNum = getNextReadableNumWithBackwardScan(i - 1, 0,
<a class="jxr_linenumber" name="210" href="#210">210</a>               readPoint);
<a class="jxr_linenumber" name="211" href="#211">211</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="212" href="#212">212</a>           nextReadableNum = getNextReadableNumWithBackwardScan(i, qualNum + 1,
<a class="jxr_linenumber" name="213" href="#213">213</a>               readPoint);
<a class="jxr_linenumber" name="214" href="#214">214</a>         }
<a class="jxr_linenumber" name="215" href="#215">215</a>         <strong class="jxr_keyword">if</strong> (nextReadableNum == <strong class="jxr_keyword">null</strong>) <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="216" href="#216">216</a>         expecedKey = makeKV(nextReadableNum.getFirst(),
<a class="jxr_linenumber" name="217" href="#217">217</a>             nextReadableNum.getSecond());
<a class="jxr_linenumber" name="218" href="#218">218</a>         assertEquals(expecedKey, kvHeap.peek());
<a class="jxr_linenumber" name="219" href="#219">219</a>         i = nextReadableNum.getFirst();
<a class="jxr_linenumber" name="220" href="#220">220</a>       }
<a class="jxr_linenumber" name="221" href="#221">221</a>     }
<a class="jxr_linenumber" name="222" href="#222">222</a>   }
<a class="jxr_linenumber" name="223" href="#223">223</a> 
<a class="jxr_linenumber" name="224" href="#224">224</a>   @Test
<a class="jxr_linenumber" name="225" href="#225">225</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testReversibleStoreScanner() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="226" href="#226">226</a>     <em class="jxr_comment">// write data to one memstore and two store files</em>
<a class="jxr_linenumber" name="227" href="#227">227</a>     FileSystem fs = TEST_UTIL.getTestFileSystem();
<a class="jxr_linenumber" name="228" href="#228">228</a>     Path hfilePath = <strong class="jxr_keyword">new</strong> Path(<strong class="jxr_keyword">new</strong> Path(
<a class="jxr_linenumber" name="229" href="#229">229</a>         TEST_UTIL.getDataTestDir(<span class="jxr_string">"testReversibleStoreScanner"</span>), <span class="jxr_string">"regionname"</span>),
<a class="jxr_linenumber" name="230" href="#230">230</a>         <span class="jxr_string">"familyname"</span>);
<a class="jxr_linenumber" name="231" href="#231">231</a>     CacheConfig cacheConf = <strong class="jxr_keyword">new</strong> CacheConfig(TEST_UTIL.getConfiguration());
<a class="jxr_linenumber" name="232" href="#232">232</a>     HFileContextBuilder hcBuilder = <strong class="jxr_keyword">new</strong> HFileContextBuilder();
<a class="jxr_linenumber" name="233" href="#233">233</a>     hcBuilder.withBlockSize(2 * 1024);
<a class="jxr_linenumber" name="234" href="#234">234</a>     HFileContext hFileContext = hcBuilder.build();
<a class="jxr_linenumber" name="235" href="#235">235</a>     StoreFile.Writer writer1 = <strong class="jxr_keyword">new</strong> StoreFile.WriterBuilder(
<a class="jxr_linenumber" name="236" href="#236">236</a>         TEST_UTIL.getConfiguration(), cacheConf, fs).withOutputDir(
<a class="jxr_linenumber" name="237" href="#237">237</a>         hfilePath).withFileContext(hFileContext).build();
<a class="jxr_linenumber" name="238" href="#238">238</a>     StoreFile.Writer writer2 = <strong class="jxr_keyword">new</strong> StoreFile.WriterBuilder(
<a class="jxr_linenumber" name="239" href="#239">239</a>         TEST_UTIL.getConfiguration(), cacheConf, fs).withOutputDir(
<a class="jxr_linenumber" name="240" href="#240">240</a>         hfilePath).withFileContext(hFileContext).build();
<a class="jxr_linenumber" name="241" href="#241">241</a> 
<a class="jxr_linenumber" name="242" href="#242">242</a>     MemStore memstore = <strong class="jxr_keyword">new</strong> MemStore();
<a class="jxr_linenumber" name="243" href="#243">243</a>     writeMemstoreAndStoreFiles(memstore, <strong class="jxr_keyword">new</strong> StoreFile.Writer[] { writer1,
<a class="jxr_linenumber" name="244" href="#244">244</a>         writer2 });
<a class="jxr_linenumber" name="245" href="#245">245</a> 
<a class="jxr_linenumber" name="246" href="#246">246</a>     StoreFile sf1 = <strong class="jxr_keyword">new</strong> StoreFile(fs, writer1.getPath(),
<a class="jxr_linenumber" name="247" href="#247">247</a>         TEST_UTIL.getConfiguration(), cacheConf, BloomType.NONE);
<a class="jxr_linenumber" name="248" href="#248">248</a> 
<a class="jxr_linenumber" name="249" href="#249">249</a>     StoreFile sf2 = <strong class="jxr_keyword">new</strong> StoreFile(fs, writer2.getPath(),
<a class="jxr_linenumber" name="250" href="#250">250</a>         TEST_UTIL.getConfiguration(), cacheConf, BloomType.NONE);
<a class="jxr_linenumber" name="251" href="#251">251</a> 
<a class="jxr_linenumber" name="252" href="#252">252</a>     ScanType scanType = ScanType.USER_SCAN;
<a class="jxr_linenumber" name="253" href="#253">253</a>     ScanInfo scanInfo = <strong class="jxr_keyword">new</strong> ScanInfo(FAMILYNAME, 0, Integer.MAX_VALUE,
<a class="jxr_linenumber" name="254" href="#254">254</a>         Long.MAX_VALUE, false, 0, KeyValue.COMPARATOR);
<a class="jxr_linenumber" name="255" href="#255">255</a> 
<a class="jxr_linenumber" name="256" href="#256">256</a>     <em class="jxr_comment">// Case 1.Test a full reversed scan</em>
<a class="jxr_linenumber" name="257" href="#257">257</a>     Scan scan = <strong class="jxr_keyword">new</strong> Scan();
<a class="jxr_linenumber" name="258" href="#258">258</a>     scan.setReversed(<strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="259" href="#259">259</a>     StoreScanner storeScanner = getReversibleStoreScanner(memstore, sf1, sf2,
<a class="jxr_linenumber" name="260" href="#260">260</a>         scan, scanType, scanInfo, MAXMVCC);
<a class="jxr_linenumber" name="261" href="#261">261</a>     verifyCountAndOrder(storeScanner, QUALSIZE * ROWSIZE, ROWSIZE, false);
<a class="jxr_linenumber" name="262" href="#262">262</a> 
<a class="jxr_linenumber" name="263" href="#263">263</a>     <em class="jxr_comment">// Case 2.Test reversed scan with a specified start row</em>
<a class="jxr_linenumber" name="264" href="#264">264</a>     <strong class="jxr_keyword">int</strong> startRowNum = ROWSIZE / 2;
<a class="jxr_linenumber" name="265" href="#265">265</a>     byte[] startRow = ROWS[startRowNum];
<a class="jxr_linenumber" name="266" href="#266">266</a>     scan.setStartRow(startRow);
<a class="jxr_linenumber" name="267" href="#267">267</a>     storeScanner = getReversibleStoreScanner(memstore, sf1, sf2, scan,
<a class="jxr_linenumber" name="268" href="#268">268</a>         scanType, scanInfo, MAXMVCC);
<a class="jxr_linenumber" name="269" href="#269">269</a>     verifyCountAndOrder(storeScanner, QUALSIZE * (startRowNum + 1),
<a class="jxr_linenumber" name="270" href="#270">270</a>         startRowNum + 1, false);
<a class="jxr_linenumber" name="271" href="#271">271</a> 
<a class="jxr_linenumber" name="272" href="#272">272</a>     <em class="jxr_comment">// Case 3.Test reversed scan with a specified start row and specified</em>
<a class="jxr_linenumber" name="273" href="#273">273</a>     <em class="jxr_comment">// qualifiers</em>
<a class="jxr_linenumber" name="274" href="#274">274</a>     assertTrue(QUALSIZE &gt; 2);
<a class="jxr_linenumber" name="275" href="#275">275</a>     scan.addColumn(FAMILYNAME, QUALS[0]);
<a class="jxr_linenumber" name="276" href="#276">276</a>     scan.addColumn(FAMILYNAME, QUALS[2]);
<a class="jxr_linenumber" name="277" href="#277">277</a>     storeScanner = getReversibleStoreScanner(memstore, sf1, sf2, scan,
<a class="jxr_linenumber" name="278" href="#278">278</a>         scanType, scanInfo, MAXMVCC);
<a class="jxr_linenumber" name="279" href="#279">279</a>     verifyCountAndOrder(storeScanner, 2 * (startRowNum + 1), startRowNum + 1,
<a class="jxr_linenumber" name="280" href="#280">280</a>         false);
<a class="jxr_linenumber" name="281" href="#281">281</a> 
<a class="jxr_linenumber" name="282" href="#282">282</a>     <em class="jxr_comment">// Case 4.Test reversed scan with mvcc based on case 3</em>
<a class="jxr_linenumber" name="283" href="#283">283</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> readPoint = 0; readPoint &lt; MAXMVCC; readPoint++) {
<a class="jxr_linenumber" name="284" href="#284">284</a>       LOG.info(<span class="jxr_string">"Setting read point to "</span> + readPoint);
<a class="jxr_linenumber" name="285" href="#285">285</a>       storeScanner = getReversibleStoreScanner(memstore, sf1, sf2, scan,
<a class="jxr_linenumber" name="286" href="#286">286</a>           scanType, scanInfo, readPoint);
<a class="jxr_linenumber" name="287" href="#287">287</a>       <strong class="jxr_keyword">int</strong> expectedRowCount = 0;
<a class="jxr_linenumber" name="288" href="#288">288</a>       <strong class="jxr_keyword">int</strong> expectedKVCount = 0;
<a class="jxr_linenumber" name="289" href="#289">289</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startRowNum; i &gt;= 0; i--) {
<a class="jxr_linenumber" name="290" href="#290">290</a>         <strong class="jxr_keyword">int</strong> kvCount = 0;
<a class="jxr_linenumber" name="291" href="#291">291</a>         <strong class="jxr_keyword">if</strong> (makeMVCC(i, 0) &lt;= readPoint) {
<a class="jxr_linenumber" name="292" href="#292">292</a>           kvCount++;
<a class="jxr_linenumber" name="293" href="#293">293</a>         }
<a class="jxr_linenumber" name="294" href="#294">294</a>         <strong class="jxr_keyword">if</strong> (makeMVCC(i, 2) &lt;= readPoint) {
<a class="jxr_linenumber" name="295" href="#295">295</a>           kvCount++;
<a class="jxr_linenumber" name="296" href="#296">296</a>         }
<a class="jxr_linenumber" name="297" href="#297">297</a>         <strong class="jxr_keyword">if</strong> (kvCount &gt; 0) {
<a class="jxr_linenumber" name="298" href="#298">298</a>           expectedRowCount++;
<a class="jxr_linenumber" name="299" href="#299">299</a>           expectedKVCount += kvCount;
<a class="jxr_linenumber" name="300" href="#300">300</a>         }
<a class="jxr_linenumber" name="301" href="#301">301</a>       }
<a class="jxr_linenumber" name="302" href="#302">302</a>       verifyCountAndOrder(storeScanner, expectedKVCount, expectedRowCount,
<a class="jxr_linenumber" name="303" href="#303">303</a>           false);
<a class="jxr_linenumber" name="304" href="#304">304</a>     }
<a class="jxr_linenumber" name="305" href="#305">305</a>   }
<a class="jxr_linenumber" name="306" href="#306">306</a> 
<a class="jxr_linenumber" name="307" href="#307">307</a>   @Test
<a class="jxr_linenumber" name="308" href="#308">308</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testReversibleRegionScanner() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="309" href="#309">309</a>     byte[] tableName = Bytes.toBytes(<span class="jxr_string">"testtable"</span>);
<a class="jxr_linenumber" name="310" href="#310">310</a>     byte[] FAMILYNAME2 = Bytes.toBytes(<span class="jxr_string">"testCf2"</span>);
<a class="jxr_linenumber" name="311" href="#311">311</a>     Configuration conf = HBaseConfiguration.create();
<a class="jxr_linenumber" name="312" href="#312">312</a>     HRegion region = TEST_UTIL.createLocalHRegion(tableName, <strong class="jxr_keyword">null</strong>, <strong class="jxr_keyword">null</strong>,
<a class="jxr_linenumber" name="313" href="#313">313</a>         <span class="jxr_string">"testReversibleRegionScanner"</span>, conf, false, Durability.SYNC_WAL, <strong class="jxr_keyword">null</strong>,
<a class="jxr_linenumber" name="314" href="#314">314</a>         FAMILYNAME, FAMILYNAME2);
<a class="jxr_linenumber" name="315" href="#315">315</a>     loadDataToRegion(region, FAMILYNAME2);
<a class="jxr_linenumber" name="316" href="#316">316</a> 
<a class="jxr_linenumber" name="317" href="#317">317</a>     <em class="jxr_comment">// verify row count with forward scan</em>
<a class="jxr_linenumber" name="318" href="#318">318</a>     Scan scan = <strong class="jxr_keyword">new</strong> Scan();
<a class="jxr_linenumber" name="319" href="#319">319</a>     InternalScanner scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="320" href="#320">320</a>     verifyCountAndOrder(scanner, ROWSIZE * QUALSIZE * 2, ROWSIZE, <strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="321" href="#321">321</a> 
<a class="jxr_linenumber" name="322" href="#322">322</a>     <em class="jxr_comment">// Case1:Full reversed scan</em>
<a class="jxr_linenumber" name="323" href="#323">323</a>     scan.setReversed(<strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="324" href="#324">324</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="325" href="#325">325</a>     verifyCountAndOrder(scanner, ROWSIZE * QUALSIZE * 2, ROWSIZE, false);
<a class="jxr_linenumber" name="326" href="#326">326</a> 
<a class="jxr_linenumber" name="327" href="#327">327</a>     <em class="jxr_comment">// Case2:Full reversed scan with one family</em>
<a class="jxr_linenumber" name="328" href="#328">328</a>     scan = <strong class="jxr_keyword">new</strong> Scan();
<a class="jxr_linenumber" name="329" href="#329">329</a>     scan.setReversed(<strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="330" href="#330">330</a>     scan.addFamily(FAMILYNAME);
<a class="jxr_linenumber" name="331" href="#331">331</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="332" href="#332">332</a>     verifyCountAndOrder(scanner, ROWSIZE * QUALSIZE, ROWSIZE, false);
<a class="jxr_linenumber" name="333" href="#333">333</a> 
<a class="jxr_linenumber" name="334" href="#334">334</a>     <em class="jxr_comment">// Case3:Specify qualifiers + One family</em>
<a class="jxr_linenumber" name="335" href="#335">335</a>     byte[][] specifiedQualifiers = { QUALS[1], QUALS[2] };
<a class="jxr_linenumber" name="336" href="#336">336</a>     <strong class="jxr_keyword">for</strong> (byte[] specifiedQualifier : specifiedQualifiers)
<a class="jxr_linenumber" name="337" href="#337">337</a>       scan.addColumn(FAMILYNAME, specifiedQualifier);
<a class="jxr_linenumber" name="338" href="#338">338</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="339" href="#339">339</a>     verifyCountAndOrder(scanner, ROWSIZE * 2, ROWSIZE, false);
<a class="jxr_linenumber" name="340" href="#340">340</a> 
<a class="jxr_linenumber" name="341" href="#341">341</a>     <em class="jxr_comment">// Case4:Specify qualifiers + Two families</em>
<a class="jxr_linenumber" name="342" href="#342">342</a>     <strong class="jxr_keyword">for</strong> (byte[] specifiedQualifier : specifiedQualifiers)
<a class="jxr_linenumber" name="343" href="#343">343</a>       scan.addColumn(FAMILYNAME2, specifiedQualifier);
<a class="jxr_linenumber" name="344" href="#344">344</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="345" href="#345">345</a>     verifyCountAndOrder(scanner, ROWSIZE * 2 * 2, ROWSIZE, false);
<a class="jxr_linenumber" name="346" href="#346">346</a> 
<a class="jxr_linenumber" name="347" href="#347">347</a>     <em class="jxr_comment">// Case5: Case4 + specify start row</em>
<a class="jxr_linenumber" name="348" href="#348">348</a>     <strong class="jxr_keyword">int</strong> startRowNum = ROWSIZE * 3 / 4;
<a class="jxr_linenumber" name="349" href="#349">349</a>     scan.setStartRow(ROWS[startRowNum]);
<a class="jxr_linenumber" name="350" href="#350">350</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="351" href="#351">351</a>     verifyCountAndOrder(scanner, (startRowNum + 1) * 2 * 2, (startRowNum + 1),
<a class="jxr_linenumber" name="352" href="#352">352</a>         false);
<a class="jxr_linenumber" name="353" href="#353">353</a> 
<a class="jxr_linenumber" name="354" href="#354">354</a>     <em class="jxr_comment">// Case6: Case4 + specify stop row</em>
<a class="jxr_linenumber" name="355" href="#355">355</a>     <strong class="jxr_keyword">int</strong> stopRowNum = ROWSIZE / 4;
<a class="jxr_linenumber" name="356" href="#356">356</a>     scan.setStartRow(HConstants.EMPTY_BYTE_ARRAY);
<a class="jxr_linenumber" name="357" href="#357">357</a>     scan.setStopRow(ROWS[stopRowNum]);
<a class="jxr_linenumber" name="358" href="#358">358</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="359" href="#359">359</a>     verifyCountAndOrder(scanner, (ROWSIZE - stopRowNum - 1) * 2 * 2, (ROWSIZE
<a class="jxr_linenumber" name="360" href="#360">360</a>         - stopRowNum - 1), false);
<a class="jxr_linenumber" name="361" href="#361">361</a> 
<a class="jxr_linenumber" name="362" href="#362">362</a>     <em class="jxr_comment">// Case7: Case4 + specify start row + specify stop row</em>
<a class="jxr_linenumber" name="363" href="#363">363</a>     scan.setStartRow(ROWS[startRowNum]);
<a class="jxr_linenumber" name="364" href="#364">364</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="365" href="#365">365</a>     verifyCountAndOrder(scanner, (startRowNum - stopRowNum) * 2 * 2,
<a class="jxr_linenumber" name="366" href="#366">366</a>         (startRowNum - stopRowNum), false);
<a class="jxr_linenumber" name="367" href="#367">367</a> 
<a class="jxr_linenumber" name="368" href="#368">368</a>     <em class="jxr_comment">// Case8: Case7 + SingleColumnValueFilter</em>
<a class="jxr_linenumber" name="369" href="#369">369</a>     <strong class="jxr_keyword">int</strong> valueNum = startRowNum % VALUESIZE;
<a class="jxr_linenumber" name="370" href="#370">370</a>     Filter filter = <strong class="jxr_keyword">new</strong> SingleColumnValueFilter(FAMILYNAME,
<a class="jxr_linenumber" name="371" href="#371">371</a>         specifiedQualifiers[0], CompareOp.EQUAL, VALUES[valueNum]);
<a class="jxr_linenumber" name="372" href="#372">372</a>     scan.setFilter(filter);
<a class="jxr_linenumber" name="373" href="#373">373</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="374" href="#374">374</a>     <strong class="jxr_keyword">int</strong> unfilteredRowNum = (startRowNum - stopRowNum) / VALUESIZE
<a class="jxr_linenumber" name="375" href="#375">375</a>         + (stopRowNum / VALUESIZE == valueNum ? 0 : 1);
<a class="jxr_linenumber" name="376" href="#376">376</a>     verifyCountAndOrder(scanner, unfilteredRowNum * 2 * 2, unfilteredRowNum,
<a class="jxr_linenumber" name="377" href="#377">377</a>         false);
<a class="jxr_linenumber" name="378" href="#378">378</a> 
<a class="jxr_linenumber" name="379" href="#379">379</a>     <em class="jxr_comment">// Case9: Case7 + PageFilter</em>
<a class="jxr_linenumber" name="380" href="#380">380</a>     <strong class="jxr_keyword">int</strong> pageSize = 10;
<a class="jxr_linenumber" name="381" href="#381">381</a>     filter = <strong class="jxr_keyword">new</strong> PageFilter(pageSize);
<a class="jxr_linenumber" name="382" href="#382">382</a>     scan.setFilter(filter);
<a class="jxr_linenumber" name="383" href="#383">383</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="384" href="#384">384</a>     <strong class="jxr_keyword">int</strong> expectedRowNum = pageSize;
<a class="jxr_linenumber" name="385" href="#385">385</a>     verifyCountAndOrder(scanner, expectedRowNum * 2 * 2, expectedRowNum, false);
<a class="jxr_linenumber" name="386" href="#386">386</a> 
<a class="jxr_linenumber" name="387" href="#387">387</a>     <em class="jxr_comment">// Case10: Case7 + FilterList+MUST_PASS_ONE</em>
<a class="jxr_linenumber" name="388" href="#388">388</a>     SingleColumnValueFilter scvFilter1 = <strong class="jxr_keyword">new</strong> SingleColumnValueFilter(
<a class="jxr_linenumber" name="389" href="#389">389</a>         FAMILYNAME, specifiedQualifiers[0], CompareOp.EQUAL, VALUES[0]);
<a class="jxr_linenumber" name="390" href="#390">390</a>     SingleColumnValueFilter scvFilter2 = <strong class="jxr_keyword">new</strong> SingleColumnValueFilter(
<a class="jxr_linenumber" name="391" href="#391">391</a>         FAMILYNAME, specifiedQualifiers[0], CompareOp.EQUAL, VALUES[1]);
<a class="jxr_linenumber" name="392" href="#392">392</a>     expectedRowNum = 0;
<a class="jxr_linenumber" name="393" href="#393">393</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startRowNum; i &gt; stopRowNum; i--) {
<a class="jxr_linenumber" name="394" href="#394">394</a>       <strong class="jxr_keyword">if</strong> (i % VALUESIZE == 0 || i % VALUESIZE == 1) {
<a class="jxr_linenumber" name="395" href="#395">395</a>         expectedRowNum++;
<a class="jxr_linenumber" name="396" href="#396">396</a>       }
<a class="jxr_linenumber" name="397" href="#397">397</a>     }
<a class="jxr_linenumber" name="398" href="#398">398</a>     filter = <strong class="jxr_keyword">new</strong> FilterList(Operator.MUST_PASS_ONE, scvFilter1, scvFilter2);
<a class="jxr_linenumber" name="399" href="#399">399</a>     scan.setFilter(filter);
<a class="jxr_linenumber" name="400" href="#400">400</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="401" href="#401">401</a>     verifyCountAndOrder(scanner, expectedRowNum * 2 * 2, expectedRowNum, false);
<a class="jxr_linenumber" name="402" href="#402">402</a> 
<a class="jxr_linenumber" name="403" href="#403">403</a>     <em class="jxr_comment">// Case10: Case7 + FilterList+MUST_PASS_ALL</em>
<a class="jxr_linenumber" name="404" href="#404">404</a>     filter = <strong class="jxr_keyword">new</strong> FilterList(Operator.MUST_PASS_ALL, scvFilter1, scvFilter2);
<a class="jxr_linenumber" name="405" href="#405">405</a>     expectedRowNum = 0;
<a class="jxr_linenumber" name="406" href="#406">406</a>     scan.setFilter(filter);
<a class="jxr_linenumber" name="407" href="#407">407</a>     scanner = region.getScanner(scan);
<a class="jxr_linenumber" name="408" href="#408">408</a>     verifyCountAndOrder(scanner, expectedRowNum * 2 * 2, expectedRowNum, false);
<a class="jxr_linenumber" name="409" href="#409">409</a>   }
<a class="jxr_linenumber" name="410" href="#410">410</a> 
<a class="jxr_linenumber" name="411" href="#411">411</a>   <strong class="jxr_keyword">private</strong> StoreScanner getReversibleStoreScanner(MemStore memstore,
<a class="jxr_linenumber" name="412" href="#412">412</a>       StoreFile sf1, StoreFile sf2, Scan scan, ScanType scanType,
<a class="jxr_linenumber" name="413" href="#413">413</a>       ScanInfo scanInfo, <strong class="jxr_keyword">int</strong> readPoint) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="414" href="#414">414</a>     List&lt;KeyValueScanner&gt; scanners = getScanners(memstore, sf1, sf2, <strong class="jxr_keyword">null</strong>,
<a class="jxr_linenumber" name="415" href="#415">415</a>         false, readPoint);
<a class="jxr_linenumber" name="416" href="#416">416</a>     NavigableSet&lt;byte[]&gt; columns = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="417" href="#417">417</a>     <strong class="jxr_keyword">for</strong> (Map.Entry&lt;byte[], NavigableSet&lt;byte[]&gt;&gt; entry : scan.getFamilyMap()
<a class="jxr_linenumber" name="418" href="#418">418</a>         .entrySet()) {
<a class="jxr_linenumber" name="419" href="#419">419</a>       <em class="jxr_comment">// Should only one family</em>
<a class="jxr_linenumber" name="420" href="#420">420</a>       columns = entry.getValue();
<a class="jxr_linenumber" name="421" href="#421">421</a>     }
<a class="jxr_linenumber" name="422" href="#422">422</a>     StoreScanner storeScanner = <strong class="jxr_keyword">new</strong> ReversedStoreScanner(scan, scanInfo,
<a class="jxr_linenumber" name="423" href="#423">423</a>         scanType, columns, scanners);
<a class="jxr_linenumber" name="424" href="#424">424</a>     <strong class="jxr_keyword">return</strong> storeScanner;
<a class="jxr_linenumber" name="425" href="#425">425</a>   }
<a class="jxr_linenumber" name="426" href="#426">426</a> 
<a class="jxr_linenumber" name="427" href="#427">427</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> verifyCountAndOrder(InternalScanner scanner,
<a class="jxr_linenumber" name="428" href="#428">428</a>       <strong class="jxr_keyword">int</strong> expectedKVCount, <strong class="jxr_keyword">int</strong> expectedRowCount, <strong class="jxr_keyword">boolean</strong> forward)
<a class="jxr_linenumber" name="429" href="#429">429</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="430" href="#430">430</a>     List&lt;Cell&gt; kvList = <strong class="jxr_keyword">new</strong> ArrayList&lt;Cell&gt;();
<a class="jxr_linenumber" name="431" href="#431">431</a>     Result lastResult = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="432" href="#432">432</a>     <strong class="jxr_keyword">int</strong> rowCount = 0;
<a class="jxr_linenumber" name="433" href="#433">433</a>     <strong class="jxr_keyword">int</strong> kvCount = 0;
<a class="jxr_linenumber" name="434" href="#434">434</a>     <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="435" href="#435">435</a>       <strong class="jxr_keyword">while</strong> (scanner.next(kvList)) {
<a class="jxr_linenumber" name="436" href="#436">436</a>         <strong class="jxr_keyword">if</strong> (kvList.isEmpty()) <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="437" href="#437">437</a>         rowCount++;
<a class="jxr_linenumber" name="438" href="#438">438</a>         kvCount += kvList.size();
<a class="jxr_linenumber" name="439" href="#439">439</a>         <strong class="jxr_keyword">if</strong> (lastResult != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="440" href="#440">440</a>           Result curResult = Result.create(kvList);
<a class="jxr_linenumber" name="441" href="#441">441</a>           assertEquals(<span class="jxr_string">"LastResult:"</span> + lastResult + <span class="jxr_string">"CurResult:"</span> + curResult,
<a class="jxr_linenumber" name="442" href="#442">442</a>               forward,
<a class="jxr_linenumber" name="443" href="#443">443</a>               Bytes.compareTo(curResult.getRow(), lastResult.getRow()) &gt; 0);
<a class="jxr_linenumber" name="444" href="#444">444</a>         }
<a class="jxr_linenumber" name="445" href="#445">445</a>         lastResult = Result.create(kvList);
<a class="jxr_linenumber" name="446" href="#446">446</a>         kvList.clear();
<a class="jxr_linenumber" name="447" href="#447">447</a>       }
<a class="jxr_linenumber" name="448" href="#448">448</a>     } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="449" href="#449">449</a>       scanner.close();
<a class="jxr_linenumber" name="450" href="#450">450</a>     }
<a class="jxr_linenumber" name="451" href="#451">451</a>     <strong class="jxr_keyword">if</strong> (!kvList.isEmpty()) {
<a class="jxr_linenumber" name="452" href="#452">452</a>       rowCount++;
<a class="jxr_linenumber" name="453" href="#453">453</a>       kvCount += kvList.size();
<a class="jxr_linenumber" name="454" href="#454">454</a>       kvList.clear();
<a class="jxr_linenumber" name="455" href="#455">455</a>     }
<a class="jxr_linenumber" name="456" href="#456">456</a>     assertEquals(expectedKVCount, kvCount);
<a class="jxr_linenumber" name="457" href="#457">457</a>     assertEquals(expectedRowCount, rowCount);
<a class="jxr_linenumber" name="458" href="#458">458</a>   }
<a class="jxr_linenumber" name="459" href="#459">459</a> 
<a class="jxr_linenumber" name="460" href="#460">460</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> internalTestSeekAndNextForReversibleKeyValueHeap(
<a class="jxr_linenumber" name="461" href="#461">461</a>       ReversedKeyValueHeap kvHeap, <strong class="jxr_keyword">int</strong> startRowNum) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="462" href="#462">462</a>     <em class="jxr_comment">// Test next and seek</em>
<a class="jxr_linenumber" name="463" href="#463">463</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startRowNum; i &gt;= 0; i--) {
<a class="jxr_linenumber" name="464" href="#464">464</a>       <strong class="jxr_keyword">if</strong> (i % 2 == 1 &amp;&amp; i - 2 &gt;= 0) {
<a class="jxr_linenumber" name="465" href="#465">465</a>         i = i - 2;
<a class="jxr_linenumber" name="466" href="#466">466</a>         kvHeap.seekToPreviousRow(KeyValue.createFirstOnRow(ROWS[i + 1]));
<a class="jxr_linenumber" name="467" href="#467">467</a>       }
<a class="jxr_linenumber" name="468" href="#468">468</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="469" href="#469">469</a>         <strong class="jxr_keyword">if</strong> (j % 2 == 1 &amp;&amp; (j + 1) &lt; QUALSIZE) {
<a class="jxr_linenumber" name="470" href="#470">470</a>           j = j + 1;
<a class="jxr_linenumber" name="471" href="#471">471</a>           kvHeap.backwardSeek(makeKV(i, j));
<a class="jxr_linenumber" name="472" href="#472">472</a>         }
<a class="jxr_linenumber" name="473" href="#473">473</a>         assertEquals(makeKV(i, j), kvHeap.peek());
<a class="jxr_linenumber" name="474" href="#474">474</a>         kvHeap.next();
<a class="jxr_linenumber" name="475" href="#475">475</a>       }
<a class="jxr_linenumber" name="476" href="#476">476</a>     }
<a class="jxr_linenumber" name="477" href="#477">477</a>     assertEquals(<strong class="jxr_keyword">null</strong>, kvHeap.peek());
<a class="jxr_linenumber" name="478" href="#478">478</a>   }
<a class="jxr_linenumber" name="479" href="#479">479</a> 
<a class="jxr_linenumber" name="480" href="#480">480</a>   <strong class="jxr_keyword">private</strong> ReversedKeyValueHeap getReversibleKeyValueHeap(MemStore memstore,
<a class="jxr_linenumber" name="481" href="#481">481</a>       StoreFile sf1, StoreFile sf2, byte[] startRow, <strong class="jxr_keyword">int</strong> readPoint)
<a class="jxr_linenumber" name="482" href="#482">482</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="483" href="#483">483</a>     List&lt;KeyValueScanner&gt; scanners = getScanners(memstore, sf1, sf2, startRow,
<a class="jxr_linenumber" name="484" href="#484">484</a>         <strong class="jxr_keyword">true</strong>, readPoint);
<a class="jxr_linenumber" name="485" href="#485">485</a>     ReversedKeyValueHeap kvHeap = <strong class="jxr_keyword">new</strong> ReversedKeyValueHeap(scanners,
<a class="jxr_linenumber" name="486" href="#486">486</a>         KeyValue.COMPARATOR);
<a class="jxr_linenumber" name="487" href="#487">487</a>     <strong class="jxr_keyword">return</strong> kvHeap;
<a class="jxr_linenumber" name="488" href="#488">488</a>   }
<a class="jxr_linenumber" name="489" href="#489">489</a> 
<a class="jxr_linenumber" name="490" href="#490">490</a>   <strong class="jxr_keyword">private</strong> List&lt;KeyValueScanner&gt; getScanners(MemStore memstore, StoreFile sf1,
<a class="jxr_linenumber" name="491" href="#491">491</a>       StoreFile sf2, byte[] startRow, <strong class="jxr_keyword">boolean</strong> doSeek, <strong class="jxr_keyword">int</strong> readPoint)
<a class="jxr_linenumber" name="492" href="#492">492</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="493" href="#493">493</a>     List&lt;StoreFileScanner&gt; fileScanners = StoreFileScanner
<a class="jxr_linenumber" name="494" href="#494">494</a>         .getScannersForStoreFiles(Lists.newArrayList(sf1, sf2), false, <strong class="jxr_keyword">true</strong>,
<a class="jxr_linenumber" name="495" href="#495">495</a>             false, readPoint);
<a class="jxr_linenumber" name="496" href="#496">496</a>     List&lt;KeyValueScanner&gt; memScanners = memstore.getScanners(readPoint);
<a class="jxr_linenumber" name="497" href="#497">497</a>     List&lt;KeyValueScanner&gt; scanners = <strong class="jxr_keyword">new</strong> ArrayList&lt;KeyValueScanner&gt;(
<a class="jxr_linenumber" name="498" href="#498">498</a>         fileScanners.size() + 1);
<a class="jxr_linenumber" name="499" href="#499">499</a>     scanners.addAll(fileScanners);
<a class="jxr_linenumber" name="500" href="#500">500</a>     scanners.addAll(memScanners);
<a class="jxr_linenumber" name="501" href="#501">501</a> 
<a class="jxr_linenumber" name="502" href="#502">502</a>     <strong class="jxr_keyword">if</strong> (doSeek) {
<a class="jxr_linenumber" name="503" href="#503">503</a>       <strong class="jxr_keyword">if</strong> (Bytes.equals(HConstants.EMPTY_START_ROW, startRow)) {
<a class="jxr_linenumber" name="504" href="#504">504</a>         <strong class="jxr_keyword">for</strong> (KeyValueScanner scanner : scanners) {
<a class="jxr_linenumber" name="505" href="#505">505</a>           scanner.seekToLastRow();
<a class="jxr_linenumber" name="506" href="#506">506</a>         }
<a class="jxr_linenumber" name="507" href="#507">507</a>       } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="508" href="#508">508</a>         KeyValue startKey = KeyValue.createFirstOnRow(startRow);
<a class="jxr_linenumber" name="509" href="#509">509</a>         <strong class="jxr_keyword">for</strong> (KeyValueScanner scanner : scanners) {
<a class="jxr_linenumber" name="510" href="#510">510</a>           scanner.backwardSeek(startKey);
<a class="jxr_linenumber" name="511" href="#511">511</a>         }
<a class="jxr_linenumber" name="512" href="#512">512</a>       }
<a class="jxr_linenumber" name="513" href="#513">513</a>     }
<a class="jxr_linenumber" name="514" href="#514">514</a>     <strong class="jxr_keyword">return</strong> scanners;
<a class="jxr_linenumber" name="515" href="#515">515</a>   }
<a class="jxr_linenumber" name="516" href="#516">516</a> 
<a class="jxr_linenumber" name="517" href="#517">517</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> seekTestOfReversibleKeyValueScanner(KeyValueScanner scanner)
<a class="jxr_linenumber" name="518" href="#518">518</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="519" href="#519">519</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="520" href="#520">520</a> <em class="jxr_javadoccomment">     * Test without MVCC</em>
<a class="jxr_linenumber" name="521" href="#521">521</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="522" href="#522">522</a>     <em class="jxr_comment">// Test seek to last row</em>
<a class="jxr_linenumber" name="523" href="#523">523</a>     assertTrue(scanner.seekToLastRow());
<a class="jxr_linenumber" name="524" href="#524">524</a>     assertEquals(makeKV(ROWSIZE - 1, 0), scanner.peek());
<a class="jxr_linenumber" name="525" href="#525">525</a> 
<a class="jxr_linenumber" name="526" href="#526">526</a>     <em class="jxr_comment">// Test backward seek in three cases</em>
<a class="jxr_linenumber" name="527" href="#527">527</a>     <em class="jxr_comment">// Case1: seek in the same row in backwardSeek</em>
<a class="jxr_linenumber" name="528" href="#528">528</a>     KeyValue seekKey = makeKV(ROWSIZE - 2, QUALSIZE - 2);
<a class="jxr_linenumber" name="529" href="#529">529</a>     assertTrue(scanner.backwardSeek(seekKey));
<a class="jxr_linenumber" name="530" href="#530">530</a>     assertEquals(seekKey, scanner.peek());
<a class="jxr_linenumber" name="531" href="#531">531</a> 
<a class="jxr_linenumber" name="532" href="#532">532</a>     <em class="jxr_comment">// Case2: seek to the previous row in backwardSeek</em>
<a class="jxr_linenumber" name="533" href="#533">533</a>     <strong class="jxr_keyword">int</strong> seekRowNum = ROWSIZE - 2;
<a class="jxr_linenumber" name="534" href="#534">534</a>     assertTrue(scanner.backwardSeek(KeyValue.createLastOnRow(ROWS[seekRowNum])));
<a class="jxr_linenumber" name="535" href="#535">535</a>     KeyValue expectedKey = makeKV(seekRowNum - 1, 0);
<a class="jxr_linenumber" name="536" href="#536">536</a>     assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="537" href="#537">537</a> 
<a class="jxr_linenumber" name="538" href="#538">538</a>     <em class="jxr_comment">// Case3: unable to backward seek</em>
<a class="jxr_linenumber" name="539" href="#539">539</a>     assertFalse(scanner.backwardSeek(KeyValue.createLastOnRow(ROWS[0])));
<a class="jxr_linenumber" name="540" href="#540">540</a>     assertEquals(<strong class="jxr_keyword">null</strong>, scanner.peek());
<a class="jxr_linenumber" name="541" href="#541">541</a> 
<a class="jxr_linenumber" name="542" href="#542">542</a>     <em class="jxr_comment">// Test seek to previous row</em>
<a class="jxr_linenumber" name="543" href="#543">543</a>     seekRowNum = ROWSIZE - 4;
<a class="jxr_linenumber" name="544" href="#544">544</a>     assertTrue(scanner.seekToPreviousRow(KeyValue
<a class="jxr_linenumber" name="545" href="#545">545</a>         .createFirstOnRow(ROWS[seekRowNum])));
<a class="jxr_linenumber" name="546" href="#546">546</a>     expectedKey = makeKV(seekRowNum - 1, 0);
<a class="jxr_linenumber" name="547" href="#547">547</a>     assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="548" href="#548">548</a> 
<a class="jxr_linenumber" name="549" href="#549">549</a>     <em class="jxr_comment">// Test seek to previous row for the first row</em>
<a class="jxr_linenumber" name="550" href="#550">550</a>     assertFalse(scanner.seekToPreviousRow(makeKV(0, 0)));
<a class="jxr_linenumber" name="551" href="#551">551</a>     assertEquals(<strong class="jxr_keyword">null</strong>, scanner.peek());
<a class="jxr_linenumber" name="552" href="#552">552</a> 
<a class="jxr_linenumber" name="553" href="#553">553</a>   }
<a class="jxr_linenumber" name="554" href="#554">554</a> 
<a class="jxr_linenumber" name="555" href="#555">555</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> seekTestOfReversibleKeyValueScannerWithMVCC(
<a class="jxr_linenumber" name="556" href="#556">556</a>       KeyValueScanner scanner, <strong class="jxr_keyword">int</strong> readPoint) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="557" href="#557">557</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="558" href="#558">558</a> <em class="jxr_javadoccomment">     * Test with MVCC</em>
<a class="jxr_linenumber" name="559" href="#559">559</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="560" href="#560">560</a>       <em class="jxr_comment">// Test seek to last row</em>
<a class="jxr_linenumber" name="561" href="#561">561</a>       KeyValue expectedKey = getNextReadableKeyValueWithBackwardScan(
<a class="jxr_linenumber" name="562" href="#562">562</a>           ROWSIZE - 1, 0, readPoint);
<a class="jxr_linenumber" name="563" href="#563">563</a>       assertEquals(expectedKey != <strong class="jxr_keyword">null</strong>, scanner.seekToLastRow());
<a class="jxr_linenumber" name="564" href="#564">564</a>       assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="565" href="#565">565</a> 
<a class="jxr_linenumber" name="566" href="#566">566</a>       <em class="jxr_comment">// Test backward seek in two cases</em>
<a class="jxr_linenumber" name="567" href="#567">567</a>       <em class="jxr_comment">// Case1: seek in the same row in backwardSeek</em>
<a class="jxr_linenumber" name="568" href="#568">568</a>       expectedKey = getNextReadableKeyValueWithBackwardScan(ROWSIZE - 2,
<a class="jxr_linenumber" name="569" href="#569">569</a>           QUALSIZE - 2, readPoint);
<a class="jxr_linenumber" name="570" href="#570">570</a>       assertEquals(expectedKey != <strong class="jxr_keyword">null</strong>, scanner.backwardSeek(expectedKey));
<a class="jxr_linenumber" name="571" href="#571">571</a>       assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="572" href="#572">572</a> 
<a class="jxr_linenumber" name="573" href="#573">573</a>       <em class="jxr_comment">// Case2: seek to the previous row in backwardSeek</em>
<a class="jxr_linenumber" name="574" href="#574">574</a>     <strong class="jxr_keyword">int</strong> seekRowNum = ROWSIZE - 3;
<a class="jxr_linenumber" name="575" href="#575">575</a>     KeyValue seekKey = KeyValue.createLastOnRow(ROWS[seekRowNum]);
<a class="jxr_linenumber" name="576" href="#576">576</a>       expectedKey = getNextReadableKeyValueWithBackwardScan(seekRowNum - 1, 0,
<a class="jxr_linenumber" name="577" href="#577">577</a>           readPoint);
<a class="jxr_linenumber" name="578" href="#578">578</a>       assertEquals(expectedKey != <strong class="jxr_keyword">null</strong>, scanner.backwardSeek(seekKey));
<a class="jxr_linenumber" name="579" href="#579">579</a>       assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="580" href="#580">580</a> 
<a class="jxr_linenumber" name="581" href="#581">581</a>       <em class="jxr_comment">// Test seek to previous row</em>
<a class="jxr_linenumber" name="582" href="#582">582</a>       seekRowNum = ROWSIZE - 4;
<a class="jxr_linenumber" name="583" href="#583">583</a>       expectedKey = getNextReadableKeyValueWithBackwardScan(seekRowNum - 1, 0,
<a class="jxr_linenumber" name="584" href="#584">584</a>           readPoint);
<a class="jxr_linenumber" name="585" href="#585">585</a>       assertEquals(expectedKey != <strong class="jxr_keyword">null</strong>, scanner.seekToPreviousRow(KeyValue
<a class="jxr_linenumber" name="586" href="#586">586</a>           .createFirstOnRow(ROWS[seekRowNum])));
<a class="jxr_linenumber" name="587" href="#587">587</a>       assertEquals(expectedKey, scanner.peek());
<a class="jxr_linenumber" name="588" href="#588">588</a>   }
<a class="jxr_linenumber" name="589" href="#589">589</a> 
<a class="jxr_linenumber" name="590" href="#590">590</a>   <strong class="jxr_keyword">private</strong> KeyValue getNextReadableKeyValueWithBackwardScan(<strong class="jxr_keyword">int</strong> startRowNum,
<a class="jxr_linenumber" name="591" href="#591">591</a>       <strong class="jxr_keyword">int</strong> startQualNum, <strong class="jxr_keyword">int</strong> readPoint) {
<a class="jxr_linenumber" name="592" href="#592">592</a>     Pair&lt;Integer, Integer&gt; nextReadableNum = getNextReadableNumWithBackwardScan(
<a class="jxr_linenumber" name="593" href="#593">593</a>         startRowNum, startQualNum, readPoint);
<a class="jxr_linenumber" name="594" href="#594">594</a>     <strong class="jxr_keyword">if</strong> (nextReadableNum == <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="595" href="#595">595</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="596" href="#596">596</a>     <strong class="jxr_keyword">return</strong> makeKV(nextReadableNum.getFirst(), nextReadableNum.getSecond());
<a class="jxr_linenumber" name="597" href="#597">597</a>   }
<a class="jxr_linenumber" name="598" href="#598">598</a> 
<a class="jxr_linenumber" name="599" href="#599">599</a>   <strong class="jxr_keyword">private</strong> Pair&lt;Integer, Integer&gt; getNextReadableNumWithBackwardScan(
<a class="jxr_linenumber" name="600" href="#600">600</a>       <strong class="jxr_keyword">int</strong> startRowNum, <strong class="jxr_keyword">int</strong> startQualNum, <strong class="jxr_keyword">int</strong> readPoint) {
<a class="jxr_linenumber" name="601" href="#601">601</a>     Pair&lt;Integer, Integer&gt; nextReadableNum = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="602" href="#602">602</a>     <strong class="jxr_keyword">boolean</strong> findExpected = false;
<a class="jxr_linenumber" name="603" href="#603">603</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startRowNum; i &gt;= 0; i--) {
<a class="jxr_linenumber" name="604" href="#604">604</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = (i == startRowNum ? startQualNum : 0); j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="605" href="#605">605</a>         <strong class="jxr_keyword">if</strong> (makeMVCC(i, j) &lt;= readPoint) {
<a class="jxr_linenumber" name="606" href="#606">606</a>           nextReadableNum = <strong class="jxr_keyword">new</strong> Pair&lt;Integer, Integer&gt;(i, j);
<a class="jxr_linenumber" name="607" href="#607">607</a>           findExpected = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="608" href="#608">608</a>           <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="609" href="#609">609</a>         }
<a class="jxr_linenumber" name="610" href="#610">610</a>       }
<a class="jxr_linenumber" name="611" href="#611">611</a>       <strong class="jxr_keyword">if</strong> (findExpected)
<a class="jxr_linenumber" name="612" href="#612">612</a>         <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="613" href="#613">613</a>     }
<a class="jxr_linenumber" name="614" href="#614">614</a>     <strong class="jxr_keyword">return</strong> nextReadableNum;
<a class="jxr_linenumber" name="615" href="#615">615</a>   }
<a class="jxr_linenumber" name="616" href="#616">616</a> 
<a class="jxr_linenumber" name="617" href="#617">617</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> loadDataToRegion(HRegion region, byte[] additionalFamily)
<a class="jxr_linenumber" name="618" href="#618">618</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="619" href="#619">619</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; ROWSIZE; i++) {
<a class="jxr_linenumber" name="620" href="#620">620</a>       Put put = <strong class="jxr_keyword">new</strong> Put(ROWS[i]);
<a class="jxr_linenumber" name="621" href="#621">621</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="622" href="#622">622</a>         put.add(makeKV(i, j));
<a class="jxr_linenumber" name="623" href="#623">623</a>         <em class="jxr_comment">// put additional family</em>
<a class="jxr_linenumber" name="624" href="#624">624</a>         put.add(makeKV(i, j, additionalFamily));
<a class="jxr_linenumber" name="625" href="#625">625</a>       }
<a class="jxr_linenumber" name="626" href="#626">626</a>       region.put(put);
<a class="jxr_linenumber" name="627" href="#627">627</a>       <strong class="jxr_keyword">if</strong> (i == ROWSIZE / 3 || i == ROWSIZE * 2 / 3) {
<a class="jxr_linenumber" name="628" href="#628">628</a>         region.flushcache();
<a class="jxr_linenumber" name="629" href="#629">629</a>       }
<a class="jxr_linenumber" name="630" href="#630">630</a>     }
<a class="jxr_linenumber" name="631" href="#631">631</a>   }
<a class="jxr_linenumber" name="632" href="#632">632</a> 
<a class="jxr_linenumber" name="633" href="#633">633</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> writeMemstoreAndStoreFiles(MemStore memstore,
<a class="jxr_linenumber" name="634" href="#634">634</a>       <strong class="jxr_keyword">final</strong> StoreFile.Writer[] writers) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="635" href="#635">635</a>     Random rand = <strong class="jxr_keyword">new</strong> Random();
<a class="jxr_linenumber" name="636" href="#636">636</a>     <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="637" href="#637">637</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; ROWSIZE; i++) {
<a class="jxr_linenumber" name="638" href="#638">638</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="639" href="#639">639</a>           <strong class="jxr_keyword">if</strong> (i % 2 == 0) {
<a class="jxr_linenumber" name="640" href="#640">640</a>             memstore.add(makeKV(i, j));
<a class="jxr_linenumber" name="641" href="#641">641</a>           } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="642" href="#642">642</a>             writers[(i + j) % writers.length].append(makeKV(i, j));
<a class="jxr_linenumber" name="643" href="#643">643</a>           }
<a class="jxr_linenumber" name="644" href="#644">644</a>         }
<a class="jxr_linenumber" name="645" href="#645">645</a>       }
<a class="jxr_linenumber" name="646" href="#646">646</a>     } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="647" href="#647">647</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; writers.length; i++) {
<a class="jxr_linenumber" name="648" href="#648">648</a>         writers[i].close();
<a class="jxr_linenumber" name="649" href="#649">649</a>       }
<a class="jxr_linenumber" name="650" href="#650">650</a>     }
<a class="jxr_linenumber" name="651" href="#651">651</a>   }
<a class="jxr_linenumber" name="652" href="#652">652</a> 
<a class="jxr_linenumber" name="653" href="#653">653</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> writeStoreFile(<strong class="jxr_keyword">final</strong> StoreFile.Writer writer)
<a class="jxr_linenumber" name="654" href="#654">654</a>       <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="655" href="#655">655</a>     <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="656" href="#656">656</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; ROWSIZE; i++) {
<a class="jxr_linenumber" name="657" href="#657">657</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="658" href="#658">658</a>           writer.append(makeKV(i, j));
<a class="jxr_linenumber" name="659" href="#659">659</a>         }
<a class="jxr_linenumber" name="660" href="#660">660</a>       }
<a class="jxr_linenumber" name="661" href="#661">661</a>     } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="662" href="#662">662</a>       writer.close();
<a class="jxr_linenumber" name="663" href="#663">663</a>     }
<a class="jxr_linenumber" name="664" href="#664">664</a>   }
<a class="jxr_linenumber" name="665" href="#665">665</a> 
<a class="jxr_linenumber" name="666" href="#666">666</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> writeMemstore(MemStore memstore) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="667" href="#667">667</a>     <em class="jxr_comment">// Add half of the keyvalues to memstore</em>
<a class="jxr_linenumber" name="668" href="#668">668</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; ROWSIZE; i++) {
<a class="jxr_linenumber" name="669" href="#669">669</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="670" href="#670">670</a>         <strong class="jxr_keyword">if</strong> ((i + j) % 2 == 0) {
<a class="jxr_linenumber" name="671" href="#671">671</a>           memstore.add(makeKV(i, j));
<a class="jxr_linenumber" name="672" href="#672">672</a>         }
<a class="jxr_linenumber" name="673" href="#673">673</a>       }
<a class="jxr_linenumber" name="674" href="#674">674</a>     }
<a class="jxr_linenumber" name="675" href="#675">675</a>     memstore.snapshot();
<a class="jxr_linenumber" name="676" href="#676">676</a>     <em class="jxr_comment">// Add another half of the keyvalues to snapshot</em>
<a class="jxr_linenumber" name="677" href="#677">677</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; ROWSIZE; i++) {
<a class="jxr_linenumber" name="678" href="#678">678</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j &lt; QUALSIZE; j++) {
<a class="jxr_linenumber" name="679" href="#679">679</a>         <strong class="jxr_keyword">if</strong> ((i + j) % 2 == 1) {
<a class="jxr_linenumber" name="680" href="#680">680</a>           memstore.add(makeKV(i, j));
<a class="jxr_linenumber" name="681" href="#681">681</a>         }
<a class="jxr_linenumber" name="682" href="#682">682</a>       }
<a class="jxr_linenumber" name="683" href="#683">683</a>     }
<a class="jxr_linenumber" name="684" href="#684">684</a>   }
<a class="jxr_linenumber" name="685" href="#685">685</a> 
<a class="jxr_linenumber" name="686" href="#686">686</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> KeyValue makeKV(<strong class="jxr_keyword">int</strong> rowNum, <strong class="jxr_keyword">int</strong> cqNum) {
<a class="jxr_linenumber" name="687" href="#687">687</a>     <strong class="jxr_keyword">return</strong> makeKV(rowNum, cqNum, FAMILYNAME);
<a class="jxr_linenumber" name="688" href="#688">688</a>   }
<a class="jxr_linenumber" name="689" href="#689">689</a> 
<a class="jxr_linenumber" name="690" href="#690">690</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> KeyValue makeKV(<strong class="jxr_keyword">int</strong> rowNum, <strong class="jxr_keyword">int</strong> cqNum, byte[] familyName) {
<a class="jxr_linenumber" name="691" href="#691">691</a>     KeyValue kv = <strong class="jxr_keyword">new</strong> KeyValue(ROWS[rowNum], familyName, QUALS[cqNum], TS,
<a class="jxr_linenumber" name="692" href="#692">692</a>         VALUES[rowNum % VALUESIZE]);
<a class="jxr_linenumber" name="693" href="#693">693</a>     kv.setMvccVersion(makeMVCC(rowNum, cqNum));
<a class="jxr_linenumber" name="694" href="#694">694</a>     <strong class="jxr_keyword">return</strong> kv;
<a class="jxr_linenumber" name="695" href="#695">695</a>   }
<a class="jxr_linenumber" name="696" href="#696">696</a> 
<a class="jxr_linenumber" name="697" href="#697">697</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">long</strong> makeMVCC(<strong class="jxr_keyword">int</strong> rowNum, <strong class="jxr_keyword">int</strong> cqNum) {
<a class="jxr_linenumber" name="698" href="#698">698</a>     <strong class="jxr_keyword">return</strong> (rowNum + cqNum) % (MAXMVCC + 1);
<a class="jxr_linenumber" name="699" href="#699">699</a>   }
<a class="jxr_linenumber" name="700" href="#700">700</a> 
<a class="jxr_linenumber" name="701" href="#701">701</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[][] makeN(byte[] base, <strong class="jxr_keyword">int</strong> n) {
<a class="jxr_linenumber" name="702" href="#702">702</a>     byte[][] ret = <strong class="jxr_keyword">new</strong> byte[n][];
<a class="jxr_linenumber" name="703" href="#703">703</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++) {
<a class="jxr_linenumber" name="704" href="#704">704</a>       ret[i] = Bytes.add(base, Bytes.toBytes(String.format(<span class="jxr_string">"%04d"</span>, i)));
<a class="jxr_linenumber" name="705" href="#705">705</a>     }
<a class="jxr_linenumber" name="706" href="#706">706</a>     <strong class="jxr_keyword">return</strong> ret;
<a class="jxr_linenumber" name="707" href="#707">707</a>   }
<a class="jxr_linenumber" name="708" href="#708">708</a> }
</pre>
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