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From mi...@apache.org
Subject [05/45] hbase-site git commit: Published site at 04622254f7209c5cfeadcfa137a97fbed161075a.
Date Mon, 14 Dec 2015 16:38:16 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/736088b3/xref/org/apache/hadoop/hbase/regionserver/StoreFileScanner.html
----------------------------------------------------------------------
diff --git a/xref/org/apache/hadoop/hbase/regionserver/StoreFileScanner.html b/xref/org/apache/hadoop/hbase/regionserver/StoreFileScanner.html
index 2c2395c..a95b1c1 100644
--- a/xref/org/apache/hadoop/hbase/regionserver/StoreFileScanner.html
+++ b/xref/org/apache/hadoop/hbase/regionserver/StoreFileScanner.html
@@ -58,479 +58,482 @@
 <a class="jxr_linenumber" name="48" href="#48">48</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> StoreFile.Reader reader;
 <a class="jxr_linenumber" name="49" href="#49">49</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> hfs;
 <a class="jxr_linenumber" name="50" href="#50">50</a>    <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cur = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="51" href="#51">51</a>  
-<a class="jxr_linenumber" name="52" href="#52">52</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> realSeekDone;
-<a class="jxr_linenumber" name="53" href="#53">53</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> delayedReseek;
-<a class="jxr_linenumber" name="54" href="#54">54</a>    <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> delayedSeekKV;
-<a class="jxr_linenumber" name="55" href="#55">55</a>  
-<a class="jxr_linenumber" name="56" href="#56">56</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> enforceMVCC = false;
-<a class="jxr_linenumber" name="57" href="#57">57</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> hasMVCCInfo = false;
-<a class="jxr_linenumber" name="58" href="#58">58</a>    <em class="jxr_comment">// A flag represents whether could stop skipping KeyValues for MVCC</em>
-<a class="jxr_linenumber" name="59" href="#59">59</a>    <em class="jxr_comment">// if have encountered the next row. Only used for reversed scan</em>
-<a class="jxr_linenumber" name="60" href="#60">60</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> stopSkippingKVsIfNextRow = false;
-<a class="jxr_linenumber" name="61" href="#61">61</a>  
-<a class="jxr_linenumber" name="62" href="#62">62</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> AtomicLong seekCount;
-<a class="jxr_linenumber" name="63" href="#63">63</a>  
-<a class="jxr_linenumber" name="64" href="#64">64</a>    <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher;
-<a class="jxr_linenumber" name="65" href="#65">65</a>  
-<a class="jxr_linenumber" name="66" href="#66">66</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> readPt;
-<a class="jxr_linenumber" name="67" href="#67">67</a>  
-<a class="jxr_linenumber" name="68" href="#68">68</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">   * Implements a {@link KeyValueScanner} on top of the specified {@link HFileScanner}</em>
-<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">   * @param hfs HFile scanner</em>
-<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="72" href="#72">72</a>    <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileScanner.html">StoreFileScanner</a>(StoreFile.Reader reader, <a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> hfs, <strong class="jxr_keyword">boolean</strong> useMVCC,
-<a class="jxr_linenumber" name="73" href="#73">73</a>        <strong class="jxr_keyword">boolean</strong> hasMVCC, <strong class="jxr_keyword">long</strong> readPt) {
-<a class="jxr_linenumber" name="74" href="#74">74</a>      <strong class="jxr_keyword">this</strong>.readPt = readPt;
-<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">this</strong>.reader = reader;
-<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">this</strong>.hfs = hfs;
-<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">this</strong>.enforceMVCC = useMVCC;
-<a class="jxr_linenumber" name="78" href="#78">78</a>      <strong class="jxr_keyword">this</strong>.hasMVCCInfo = hasMVCC;
-<a class="jxr_linenumber" name="79" href="#79">79</a>    }
-<a class="jxr_linenumber" name="80" href="#80">80</a>  
-<a class="jxr_linenumber" name="81" href="#81">81</a>    <strong class="jxr_keyword">boolean</strong> isPrimaryReplica() {
-<a class="jxr_linenumber" name="82" href="#82">82</a>      <strong class="jxr_keyword">return</strong> reader.isPrimaryReplicaReader();
-<a class="jxr_linenumber" name="83" href="#83">83</a>    }
-<a class="jxr_linenumber" name="84" href="#84">84</a>  
-<a class="jxr_linenumber" name="85" href="#85">85</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given</em>
-<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">   * set of store files.</em>
-<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="89" href="#89">89</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
-<a class="jxr_linenumber" name="90" href="#90">90</a>        Collection&lt;StoreFile&gt; files,
-<a class="jxr_linenumber" name="91" href="#91">91</a>        <strong class="jxr_keyword">boolean</strong> cacheBlocks,
-<a class="jxr_linenumber" name="92" href="#92">92</a>        <strong class="jxr_keyword">boolean</strong> usePread, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="93" href="#93">93</a>      <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks,
-<a class="jxr_linenumber" name="94" href="#94">94</a>                                     usePread, false, false, readPt);
-<a class="jxr_linenumber" name="95" href="#95">95</a>    }
-<a class="jxr_linenumber" name="96" href="#96">96</a>  
-<a class="jxr_linenumber" name="97" href="#97">97</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given set of store files.</em>
-<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="100" href="#100">100</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
-<a class="jxr_linenumber" name="101" href="#101">101</a>       Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
-<a class="jxr_linenumber" name="102" href="#102">102</a>       <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> useDropBehind, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="103" href="#103">103</a>     <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks, usePread, isCompaction,
-<a class="jxr_linenumber" name="104" href="#104">104</a>         useDropBehind, <strong class="jxr_keyword">null</strong>, readPt);
-<a class="jxr_linenumber" name="105" href="#105">105</a>   }
-<a class="jxr_linenumber" name="106" href="#106">106</a> 
-<a class="jxr_linenumber" name="107" href="#107">107</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given set of store files,</em>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">   * And set the ScanQueryMatcher for each store file scanner for further</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   * optimization</em>
-<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="112" href="#112">112</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
-<a class="jxr_linenumber" name="113" href="#113">113</a>       Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
-<a class="jxr_linenumber" name="114" href="#114">114</a>       <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> canUseDrop,
-<a class="jxr_linenumber" name="115" href="#115">115</a>       <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher, <strong class="jxr_keyword">long</strong> readPt, <strong class="jxr_keyword">boolean</strong> isPrimaryReplica) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="116" href="#116">116</a>     List&lt;StoreFileScanner&gt; scanners = <strong class="jxr_keyword">new</strong> ArrayList&lt;StoreFileScanner&gt;(
-<a class="jxr_linenumber" name="117" href="#117">117</a>         files.size());
-<a class="jxr_linenumber" name="118" href="#118">118</a>     <strong class="jxr_keyword">for</strong> (StoreFile file : files) {
-<a class="jxr_linenumber" name="119" href="#119">119</a>       StoreFile.Reader r = file.createReader(canUseDrop);
-<a class="jxr_linenumber" name="120" href="#120">120</a>       r.setReplicaStoreFile(isPrimaryReplica);
-<a class="jxr_linenumber" name="121" href="#121">121</a>       <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileScanner.html">StoreFileScanner</a> scanner = r.getStoreFileScanner(cacheBlocks, usePread,
-<a class="jxr_linenumber" name="122" href="#122">122</a>           isCompaction, readPt);
-<a class="jxr_linenumber" name="123" href="#123">123</a>       scanner.setScanQueryMatcher(matcher);
-<a class="jxr_linenumber" name="124" href="#124">124</a>       scanners.add(scanner);
-<a class="jxr_linenumber" name="125" href="#125">125</a>     }
-<a class="jxr_linenumber" name="126" href="#126">126</a>     <strong class="jxr_keyword">return</strong> scanners;
-<a class="jxr_linenumber" name="127" href="#127">127</a>   }
-<a class="jxr_linenumber" name="128" href="#128">128</a> 
-<a class="jxr_linenumber" name="129" href="#129">129</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
-<a class="jxr_linenumber" name="130" href="#130">130</a>     Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
-<a class="jxr_linenumber" name="131" href="#131">131</a>     <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> canUseDrop,
-<a class="jxr_linenumber" name="132" href="#132">132</a>     <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="133" href="#133">133</a>     <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks, usePread, isCompaction, canUseDrop,
-<a class="jxr_linenumber" name="134" href="#134">134</a>       matcher, readPt, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="135" href="#135">135</a>   }
-<a class="jxr_linenumber" name="136" href="#136">136</a> 
-<a class="jxr_linenumber" name="137" href="#137">137</a>   <strong class="jxr_keyword">public</strong> String toString() {
-<a class="jxr_linenumber" name="138" href="#138">138</a>     <strong class="jxr_keyword">return</strong> <span class="jxr_string">"StoreFileScanner["</span> + hfs.toString() + <span class="jxr_string">", cur="</span> + cur + <span class="jxr_string">"]"</span>;
-<a class="jxr_linenumber" name="139" href="#139">139</a>   }
-<a class="jxr_linenumber" name="140" href="#140">140</a> 
-<a class="jxr_linenumber" name="141" href="#141">141</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> peek() {
-<a class="jxr_linenumber" name="142" href="#142">142</a>     <strong class="jxr_keyword">return</strong> cur;
-<a class="jxr_linenumber" name="143" href="#143">143</a>   }
-<a class="jxr_linenumber" name="144" href="#144">144</a> 
-<a class="jxr_linenumber" name="145" href="#145">145</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> next() <strong class="jxr_keyword">throws</strong> IOException {
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-<a class="jxr_linenumber" name="147" href="#147">147</a> 
-<a class="jxr_linenumber" name="148" href="#148">148</a>     <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="149" href="#149">149</a>       <em class="jxr_comment">// only seek if we aren't at the end. cur == null implies 'end'.</em>
-<a class="jxr_linenumber" name="150" href="#150">150</a>       <strong class="jxr_keyword">if</strong> (cur != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="151" href="#151">151</a>         hfs.next();
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-<a class="jxr_linenumber" name="153" href="#153">153</a>         <strong class="jxr_keyword">if</strong> (hasMVCCInfo || <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded()) {
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-<a class="jxr_linenumber" name="160" href="#160">160</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not iterate "</span> + <strong class="jxr_keyword">this</strong>, e);
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-<a class="jxr_linenumber" name="162" href="#162">162</a>     <strong class="jxr_keyword">return</strong> retKey;
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-<a class="jxr_linenumber" name="166" href="#166">166</a>     <strong class="jxr_keyword">if</strong> (seekCount != <strong class="jxr_keyword">null</strong>) seekCount.incrementAndGet();
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-<a class="jxr_linenumber" name="168" href="#168">168</a>     <strong class="jxr_keyword">try</strong> {
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-<a class="jxr_linenumber" name="170" href="#170">170</a>         <strong class="jxr_keyword">if</strong>(!seekAtOrAfter(hfs, key)) {
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-<a class="jxr_linenumber" name="175" href="#175">175</a>         setCurrentCell(hfs.getCell());
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-<a class="jxr_linenumber" name="178" href="#178">178</a>           <strong class="jxr_keyword">return</strong> skipKVsNewerThanReadpoint();
-<a class="jxr_linenumber" name="179" href="#179">179</a>         } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="180" href="#180">180</a>           <strong class="jxr_keyword">return</strong> !hasMVCCInfo ? <strong class="jxr_keyword">true</strong> : skipKVsNewerThanReadpoint();
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-<a class="jxr_linenumber" name="185" href="#185">185</a>     } <strong class="jxr_keyword">catch</strong> (FileNotFoundException e) {
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-<a class="jxr_linenumber" name="188" href="#188">188</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not seek "</span> + <strong class="jxr_keyword">this</strong> + <span class="jxr_string">" to key "</span> + key, ioe);
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-<a class="jxr_linenumber" name="197" href="#197">197</a>         <strong class="jxr_keyword">if</strong> (!reseekAtOrAfter(hfs, key)) {
-<a class="jxr_linenumber" name="198" href="#198">198</a>           <strong class="jxr_keyword">this</strong>.cur = <strong class="jxr_keyword">null</strong>;
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-<a class="jxr_linenumber" name="201" href="#201">201</a>         setCurrentCell(hfs.getCell());
-<a class="jxr_linenumber" name="202" href="#202">202</a> 
-<a class="jxr_linenumber" name="203" href="#203">203</a>         <strong class="jxr_keyword">if</strong> (!hasMVCCInfo &amp;&amp; <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded()) {
-<a class="jxr_linenumber" name="204" href="#204">204</a>           <strong class="jxr_keyword">return</strong> skipKVsNewerThanReadpoint();
-<a class="jxr_linenumber" name="205" href="#205">205</a>         } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="206" href="#206">206</a>           <strong class="jxr_keyword">return</strong> !hasMVCCInfo ? <strong class="jxr_keyword">true</strong> : skipKVsNewerThanReadpoint();
-<a class="jxr_linenumber" name="207" href="#207">207</a>         }
-<a class="jxr_linenumber" name="208" href="#208">208</a>       } <strong class="jxr_keyword">finally</strong> {
-<a class="jxr_linenumber" name="209" href="#209">209</a>         realSeekDone = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="210" href="#210">210</a>       }
-<a class="jxr_linenumber" name="211" href="#211">211</a>     } <strong class="jxr_keyword">catch</strong> (FileNotFoundException e) {
-<a class="jxr_linenumber" name="212" href="#212">212</a>       <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="213" href="#213">213</a>     } <strong class="jxr_keyword">catch</strong> (IOException ioe) {
-<a class="jxr_linenumber" name="214" href="#214">214</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not reseek "</span> + <strong class="jxr_keyword">this</strong> + <span class="jxr_string">" to key "</span> + key,
-<a class="jxr_linenumber" name="215" href="#215">215</a>           ioe);
-<a class="jxr_linenumber" name="216" href="#216">216</a>     }
-<a class="jxr_linenumber" name="217" href="#217">217</a>   }
-<a class="jxr_linenumber" name="218" href="#218">218</a> 
-<a class="jxr_linenumber" name="219" href="#219">219</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setCurrentCell(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> newVal) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="220" href="#220">220</a>     <strong class="jxr_keyword">this</strong>.cur = newVal;
-<a class="jxr_linenumber" name="221" href="#221">221</a>     <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.cur != <strong class="jxr_keyword">null</strong> &amp;&amp; <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded() &amp;&amp; !<strong class="jxr_keyword">this</strong>.reader.isSkipResetSeqId()) {
-<a class="jxr_linenumber" name="222" href="#222">222</a>       CellUtil.setSequenceId(cur, <strong class="jxr_keyword">this</strong>.reader.getSequenceID());
-<a class="jxr_linenumber" name="223" href="#223">223</a>     }
-<a class="jxr_linenumber" name="224" href="#224">224</a>   }
-<a class="jxr_linenumber" name="225" href="#225">225</a> 
-<a class="jxr_linenumber" name="226" href="#226">226</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> skipKVsNewerThanReadpoint() <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="227" href="#227">227</a>     <em class="jxr_comment">// We want to ignore all key-values that are newer than our current</em>
-<a class="jxr_linenumber" name="228" href="#228">228</a>     <em class="jxr_comment">// readPoint</em>
-<a class="jxr_linenumber" name="229" href="#229">229</a>     <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> startKV = cur;
-<a class="jxr_linenumber" name="230" href="#230">230</a>     <strong class="jxr_keyword">while</strong>(enforceMVCC
-<a class="jxr_linenumber" name="231" href="#231">231</a>         &amp;&amp; cur != <strong class="jxr_keyword">null</strong>
-<a class="jxr_linenumber" name="232" href="#232">232</a>         &amp;&amp; (cur.getSequenceId() &gt; readPt)) {
-<a class="jxr_linenumber" name="233" href="#233">233</a>       hfs.next();
-<a class="jxr_linenumber" name="234" href="#234">234</a>       setCurrentCell(hfs.getCell());
-<a class="jxr_linenumber" name="235" href="#235">235</a>       <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.stopSkippingKVsIfNextRow
-<a class="jxr_linenumber" name="236" href="#236">236</a>           &amp;&amp; getComparator().compareRows(cur, startKV) &gt; 0) {
-<a class="jxr_linenumber" name="237" href="#237">237</a>         <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="238" href="#238">238</a>       }
-<a class="jxr_linenumber" name="239" href="#239">239</a>     }
-<a class="jxr_linenumber" name="240" href="#240">240</a> 
-<a class="jxr_linenumber" name="241" href="#241">241</a>     <strong class="jxr_keyword">if</strong> (cur == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="242" href="#242">242</a>       <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="243" href="#243">243</a>     }
-<a class="jxr_linenumber" name="244" href="#244">244</a> 
-<a class="jxr_linenumber" name="245" href="#245">245</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="246" href="#246">246</a>   }
-<a class="jxr_linenumber" name="247" href="#247">247</a> 
-<a class="jxr_linenumber" name="248" href="#248">248</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() {
-<a class="jxr_linenumber" name="249" href="#249">249</a>     cur = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="250" href="#250">250</a>     <strong class="jxr_keyword">this</strong>.hfs.close();
-<a class="jxr_linenumber" name="251" href="#251">251</a>     <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.reader != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="252" href="#252">252</a>       <strong class="jxr_keyword">this</strong>.reader.decrementRefCount();
-<a class="jxr_linenumber" name="253" href="#253">253</a>     }
-<a class="jxr_linenumber" name="254" href="#254">254</a>   }
-<a class="jxr_linenumber" name="255" href="#255">255</a> 
-<a class="jxr_linenumber" name="256" href="#256">256</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment">   *</em>
-<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment">   * @param s</em>
-<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_javadoccomment">   * @param k</em>
-<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment">   * @return false if not found or if k is after the end.</em>
-<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
-<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="263" href="#263">263</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> seekAtOrAfter(<a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> s, <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> k)
-<a class="jxr_linenumber" name="264" href="#264">264</a>   <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="265" href="#265">265</a>     <strong class="jxr_keyword">int</strong> result = s.seekTo(k);
-<a class="jxr_linenumber" name="266" href="#266">266</a>     <strong class="jxr_keyword">if</strong>(result &lt; 0) {
-<a class="jxr_linenumber" name="267" href="#267">267</a>       <strong class="jxr_keyword">if</strong> (result == HConstants.INDEX_KEY_MAGIC) {
-<a class="jxr_linenumber" name="268" href="#268">268</a>         <em class="jxr_comment">// using faked key</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="270" href="#270">270</a>       }
-<a class="jxr_linenumber" name="271" href="#271">271</a>       <em class="jxr_comment">// Passed KV is smaller than first KV in file, work from start of file</em>
-<a class="jxr_linenumber" name="272" href="#272">272</a>       <strong class="jxr_keyword">return</strong> s.seekTo();
-<a class="jxr_linenumber" name="273" href="#273">273</a>     } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(result &gt; 0) {
-<a class="jxr_linenumber" name="274" href="#274">274</a>       <em class="jxr_comment">// Passed KV is larger than current KV in file, if there is a next</em>
-<a class="jxr_linenumber" name="275" href="#275">275</a>       <em class="jxr_comment">// it is the "after", if not then this scanner is done.</em>
-<a class="jxr_linenumber" name="276" href="#276">276</a>       <strong class="jxr_keyword">return</strong> s.next();
-<a class="jxr_linenumber" name="277" href="#277">277</a>     }
-<a class="jxr_linenumber" name="278" href="#278">278</a>     <em class="jxr_comment">// Seeked to the exact key</em>
-<a class="jxr_linenumber" name="279" href="#279">279</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="280" href="#280">280</a>   }
-<a class="jxr_linenumber" name="281" href="#281">281</a> 
-<a class="jxr_linenumber" name="282" href="#282">282</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> reseekAtOrAfter(<a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> s, <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> k)
-<a class="jxr_linenumber" name="283" href="#283">283</a>   <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="284" href="#284">284</a>     <em class="jxr_comment">//This function is similar to seekAtOrAfter function</em>
-<a class="jxr_linenumber" name="285" href="#285">285</a>     <strong class="jxr_keyword">int</strong> result = s.reseekTo(k);
-<a class="jxr_linenumber" name="286" href="#286">286</a>     <strong class="jxr_keyword">if</strong> (result &lt;= 0) {
-<a class="jxr_linenumber" name="287" href="#287">287</a>       <strong class="jxr_keyword">if</strong> (result == HConstants.INDEX_KEY_MAGIC) {
-<a class="jxr_linenumber" name="288" href="#288">288</a>         <em class="jxr_comment">// using faked key</em>
-<a class="jxr_linenumber" name="289" href="#289">289</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="290" href="#290">290</a>       }
-<a class="jxr_linenumber" name="291" href="#291">291</a>       <em class="jxr_comment">// If up to now scanner is not seeked yet, this means passed KV is smaller</em>
-<a class="jxr_linenumber" name="292" href="#292">292</a>       <em class="jxr_comment">// than first KV in file, and it is the first time we seek on this file.</em>
-<a class="jxr_linenumber" name="293" href="#293">293</a>       <em class="jxr_comment">// So we also need to work from the start of file.</em>
-<a class="jxr_linenumber" name="294" href="#294">294</a>       <strong class="jxr_keyword">if</strong> (!s.isSeeked()) {
-<a class="jxr_linenumber" name="295" href="#295">295</a>         <strong class="jxr_keyword">return</strong>  s.seekTo();
-<a class="jxr_linenumber" name="296" href="#296">296</a>       }
-<a class="jxr_linenumber" name="297" href="#297">297</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="298" href="#298">298</a>     }
-<a class="jxr_linenumber" name="299" href="#299">299</a>     <em class="jxr_comment">// passed KV is larger than current KV in file, if there is a next</em>
-<a class="jxr_linenumber" name="300" href="#300">300</a>     <em class="jxr_comment">// it is after, if not then this scanner is done.</em>
-<a class="jxr_linenumber" name="301" href="#301">301</a>     <strong class="jxr_keyword">return</strong> s.next();
-<a class="jxr_linenumber" name="302" href="#302">302</a>   }
-<a class="jxr_linenumber" name="303" href="#303">303</a> 
-<a class="jxr_linenumber" name="304" href="#304">304</a>   @Override
-<a class="jxr_linenumber" name="305" href="#305">305</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getSequenceID() {
-<a class="jxr_linenumber" name="306" href="#306">306</a>     <strong class="jxr_keyword">return</strong> reader.getSequenceID();
-<a class="jxr_linenumber" name="307" href="#307">307</a>   }
-<a class="jxr_linenumber" name="308" href="#308">308</a> 
-<a class="jxr_linenumber" name="309" href="#309">309</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_javadoccomment">   * Pretend we have done a seek but don't do it yet, if possible. The hope is</em>
-<a class="jxr_linenumber" name="311" href="#311">311</a> <em class="jxr_javadoccomment">   * that we find requested columns in more recent files and won't have to seek</em>
-<a class="jxr_linenumber" name="312" href="#312">312</a> <em class="jxr_javadoccomment">   * in older files. Creates a fake key/value with the given row/column and the</em>
-<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_javadoccomment">   * highest (most recent) possible timestamp we might get from this file. When</em>
-<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_javadoccomment">   * users of such "lazy scanner" need to know the next KV precisely (e.g. when</em>
-<a class="jxr_linenumber" name="315" href="#315">315</a> <em class="jxr_javadoccomment">   * this scanner is at the top of the heap), they run {@link #enforceSeek()}.</em>
-<a class="jxr_linenumber" name="316" href="#316">316</a> <em class="jxr_javadoccomment">   * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="317" href="#317">317</a> <em class="jxr_javadoccomment">   * Note that this function does guarantee that the current KV of this scanner</em>
-<a class="jxr_linenumber" name="318" href="#318">318</a> <em class="jxr_javadoccomment">   * will be advanced to at least the given KV. Because of this, it does have</em>
-<a class="jxr_linenumber" name="319" href="#319">319</a> <em class="jxr_javadoccomment">   * to do a real seek in cases when the seek timestamp is older than the</em>
-<a class="jxr_linenumber" name="320" href="#320">320</a> <em class="jxr_javadoccomment">   * highest timestamp of the file, e.g. when we are trying to seek to the next</em>
-<a class="jxr_linenumber" name="321" href="#321">321</a> <em class="jxr_javadoccomment">   * row/column and use OLDEST_TIMESTAMP in the seek key.</em>
-<a class="jxr_linenumber" name="322" href="#322">322</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="323" href="#323">323</a>   @Override
-<a class="jxr_linenumber" name="324" href="#324">324</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> requestSeek(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> kv, <strong class="jxr_keyword">boolean</strong> forward, <strong class="jxr_keyword">boolean</strong> useBloom)
-<a class="jxr_linenumber" name="325" href="#325">325</a>       <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="326" href="#326">326</a>     <strong class="jxr_keyword">if</strong> (kv.getFamilyLength() == 0) {
-<a class="jxr_linenumber" name="327" href="#327">327</a>       useBloom = false;
-<a class="jxr_linenumber" name="328" href="#328">328</a>     }
-<a class="jxr_linenumber" name="329" href="#329">329</a> 
-<a class="jxr_linenumber" name="330" href="#330">330</a>     <strong class="jxr_keyword">boolean</strong> haveToSeek = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="331" href="#331">331</a>     <strong class="jxr_keyword">if</strong> (useBloom) {
-<a class="jxr_linenumber" name="332" href="#332">332</a>       <em class="jxr_comment">// check ROWCOL Bloom filter first.</em>
-<a class="jxr_linenumber" name="333" href="#333">333</a>       <strong class="jxr_keyword">if</strong> (reader.getBloomFilterType() == BloomType.ROWCOL) {
-<a class="jxr_linenumber" name="334" href="#334">334</a>         haveToSeek = reader.passesGeneralRowColBloomFilter(kv);
-<a class="jxr_linenumber" name="335" href="#335">335</a>       } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.matcher != <strong class="jxr_keyword">null</strong> &amp;&amp; !matcher.hasNullColumnInQuery() &amp;&amp;
-<a class="jxr_linenumber" name="336" href="#336">336</a>           ((CellUtil.isDeleteFamily(kv) || CellUtil.isDeleteFamilyVersion(kv)))) {
-<a class="jxr_linenumber" name="337" href="#337">337</a>         <em class="jxr_comment">// if there is no such delete family kv in the store file,</em>
-<a class="jxr_linenumber" name="338" href="#338">338</a>         <em class="jxr_comment">// then no need to seek.</em>
-<a class="jxr_linenumber" name="339" href="#339">339</a>         haveToSeek = reader.passesDeleteFamilyBloomFilter(kv.getRowArray(),
-<a class="jxr_linenumber" name="340" href="#340">340</a>             kv.getRowOffset(), kv.getRowLength());
-<a class="jxr_linenumber" name="341" href="#341">341</a>       }
-<a class="jxr_linenumber" name="342" href="#342">342</a>     }
-<a class="jxr_linenumber" name="343" href="#343">343</a> 
-<a class="jxr_linenumber" name="344" href="#344">344</a>     delayedReseek = forward;
-<a class="jxr_linenumber" name="345" href="#345">345</a>     delayedSeekKV = kv;
+<a class="jxr_linenumber" name="51" href="#51">51</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> closed = false;
+<a class="jxr_linenumber" name="52" href="#52">52</a>  
+<a class="jxr_linenumber" name="53" href="#53">53</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> realSeekDone;
+<a class="jxr_linenumber" name="54" href="#54">54</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> delayedReseek;
+<a class="jxr_linenumber" name="55" href="#55">55</a>    <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> delayedSeekKV;
+<a class="jxr_linenumber" name="56" href="#56">56</a>  
+<a class="jxr_linenumber" name="57" href="#57">57</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> enforceMVCC = false;
+<a class="jxr_linenumber" name="58" href="#58">58</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> hasMVCCInfo = false;
+<a class="jxr_linenumber" name="59" href="#59">59</a>    <em class="jxr_comment">// A flag represents whether could stop skipping KeyValues for MVCC</em>
+<a class="jxr_linenumber" name="60" href="#60">60</a>    <em class="jxr_comment">// if have encountered the next row. Only used for reversed scan</em>
+<a class="jxr_linenumber" name="61" href="#61">61</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> stopSkippingKVsIfNextRow = false;
+<a class="jxr_linenumber" name="62" href="#62">62</a>  
+<a class="jxr_linenumber" name="63" href="#63">63</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> AtomicLong seekCount;
+<a class="jxr_linenumber" name="64" href="#64">64</a>  
+<a class="jxr_linenumber" name="65" href="#65">65</a>    <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher;
+<a class="jxr_linenumber" name="66" href="#66">66</a>  
+<a class="jxr_linenumber" name="67" href="#67">67</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> readPt;
+<a class="jxr_linenumber" name="68" href="#68">68</a>  
+<a class="jxr_linenumber" name="69" href="#69">69</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">   * Implements a {@link KeyValueScanner} on top of the specified {@link HFileScanner}</em>
+<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">   * @param hfs HFile scanner</em>
+<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="73" href="#73">73</a>    <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileScanner.html">StoreFileScanner</a>(StoreFile.Reader reader, <a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> hfs, <strong class="jxr_keyword">boolean</strong> useMVCC,
+<a class="jxr_linenumber" name="74" href="#74">74</a>        <strong class="jxr_keyword">boolean</strong> hasMVCC, <strong class="jxr_keyword">long</strong> readPt) {
+<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">this</strong>.readPt = readPt;
+<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">this</strong>.reader = reader;
+<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">this</strong>.hfs = hfs;
+<a class="jxr_linenumber" name="78" href="#78">78</a>      <strong class="jxr_keyword">this</strong>.enforceMVCC = useMVCC;
+<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">this</strong>.hasMVCCInfo = hasMVCC;
+<a class="jxr_linenumber" name="80" href="#80">80</a>    }
+<a class="jxr_linenumber" name="81" href="#81">81</a>  
+<a class="jxr_linenumber" name="82" href="#82">82</a>    <strong class="jxr_keyword">boolean</strong> isPrimaryReplica() {
+<a class="jxr_linenumber" name="83" href="#83">83</a>      <strong class="jxr_keyword">return</strong> reader.isPrimaryReplicaReader();
+<a class="jxr_linenumber" name="84" href="#84">84</a>    }
+<a class="jxr_linenumber" name="85" href="#85">85</a>  
+<a class="jxr_linenumber" name="86" href="#86">86</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given</em>
+<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">   * set of store files.</em>
+<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="90" href="#90">90</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
+<a class="jxr_linenumber" name="91" href="#91">91</a>        Collection&lt;StoreFile&gt; files,
+<a class="jxr_linenumber" name="92" href="#92">92</a>        <strong class="jxr_keyword">boolean</strong> cacheBlocks,
+<a class="jxr_linenumber" name="93" href="#93">93</a>        <strong class="jxr_keyword">boolean</strong> usePread, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="94" href="#94">94</a>      <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks,
+<a class="jxr_linenumber" name="95" href="#95">95</a>                                     usePread, false, false, readPt);
+<a class="jxr_linenumber" name="96" href="#96">96</a>    }
+<a class="jxr_linenumber" name="97" href="#97">97</a>  
+<a class="jxr_linenumber" name="98" href="#98">98</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given set of store files.</em>
+<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="101" href="#101">101</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
+<a class="jxr_linenumber" name="102" href="#102">102</a>       Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
+<a class="jxr_linenumber" name="103" href="#103">103</a>       <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> useDropBehind, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="104" href="#104">104</a>     <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks, usePread, isCompaction,
+<a class="jxr_linenumber" name="105" href="#105">105</a>         useDropBehind, <strong class="jxr_keyword">null</strong>, readPt);
+<a class="jxr_linenumber" name="106" href="#106">106</a>   }
+<a class="jxr_linenumber" name="107" href="#107">107</a> 
+<a class="jxr_linenumber" name="108" href="#108">108</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">   * Return an array of scanners corresponding to the given set of store files,</em>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   * And set the ScanQueryMatcher for each store file scanner for further</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">   * optimization</em>
+<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="113" href="#113">113</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
+<a class="jxr_linenumber" name="114" href="#114">114</a>       Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
+<a class="jxr_linenumber" name="115" href="#115">115</a>       <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> canUseDrop,
+<a class="jxr_linenumber" name="116" href="#116">116</a>       <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher, <strong class="jxr_keyword">long</strong> readPt, <strong class="jxr_keyword">boolean</strong> isPrimaryReplica) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="117" href="#117">117</a>     List&lt;StoreFileScanner&gt; scanners = <strong class="jxr_keyword">new</strong> ArrayList&lt;StoreFileScanner&gt;(
+<a class="jxr_linenumber" name="118" href="#118">118</a>         files.size());
+<a class="jxr_linenumber" name="119" href="#119">119</a>     <strong class="jxr_keyword">for</strong> (StoreFile file : files) {
+<a class="jxr_linenumber" name="120" href="#120">120</a>       StoreFile.Reader r = file.createReader(canUseDrop);
+<a class="jxr_linenumber" name="121" href="#121">121</a>       r.setReplicaStoreFile(isPrimaryReplica);
+<a class="jxr_linenumber" name="122" href="#122">122</a>       <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileScanner.html">StoreFileScanner</a> scanner = r.getStoreFileScanner(cacheBlocks, usePread,
+<a class="jxr_linenumber" name="123" href="#123">123</a>           isCompaction, readPt);
+<a class="jxr_linenumber" name="124" href="#124">124</a>       scanner.setScanQueryMatcher(matcher);
+<a class="jxr_linenumber" name="125" href="#125">125</a>       scanners.add(scanner);
+<a class="jxr_linenumber" name="126" href="#126">126</a>     }
+<a class="jxr_linenumber" name="127" href="#127">127</a>     <strong class="jxr_keyword">return</strong> scanners;
+<a class="jxr_linenumber" name="128" href="#128">128</a>   }
+<a class="jxr_linenumber" name="129" href="#129">129</a> 
+<a class="jxr_linenumber" name="130" href="#130">130</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;StoreFileScanner&gt; getScannersForStoreFiles(
+<a class="jxr_linenumber" name="131" href="#131">131</a>     Collection&lt;StoreFile&gt; files, <strong class="jxr_keyword">boolean</strong> cacheBlocks, <strong class="jxr_keyword">boolean</strong> usePread,
+<a class="jxr_linenumber" name="132" href="#132">132</a>     <strong class="jxr_keyword">boolean</strong> isCompaction, <strong class="jxr_keyword">boolean</strong> canUseDrop,
+<a class="jxr_linenumber" name="133" href="#133">133</a>     <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher, <strong class="jxr_keyword">long</strong> readPt) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="134" href="#134">134</a>     <strong class="jxr_keyword">return</strong> getScannersForStoreFiles(files, cacheBlocks, usePread, isCompaction, canUseDrop,
+<a class="jxr_linenumber" name="135" href="#135">135</a>       matcher, readPt, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="136" href="#136">136</a>   }
+<a class="jxr_linenumber" name="137" href="#137">137</a> 
+<a class="jxr_linenumber" name="138" href="#138">138</a>   <strong class="jxr_keyword">public</strong> String toString() {
+<a class="jxr_linenumber" name="139" href="#139">139</a>     <strong class="jxr_keyword">return</strong> <span class="jxr_string">"StoreFileScanner["</span> + hfs.toString() + <span class="jxr_string">", cur="</span> + cur + <span class="jxr_string">"]"</span>;
+<a class="jxr_linenumber" name="140" href="#140">140</a>   }
+<a class="jxr_linenumber" name="141" href="#141">141</a> 
+<a class="jxr_linenumber" name="142" href="#142">142</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> peek() {
+<a class="jxr_linenumber" name="143" href="#143">143</a>     <strong class="jxr_keyword">return</strong> cur;
+<a class="jxr_linenumber" name="144" href="#144">144</a>   }
+<a class="jxr_linenumber" name="145" href="#145">145</a> 
+<a class="jxr_linenumber" name="146" href="#146">146</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> next() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="147" href="#147">147</a>     <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> retKey = cur;
+<a class="jxr_linenumber" name="148" href="#148">148</a> 
+<a class="jxr_linenumber" name="149" href="#149">149</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="150" href="#150">150</a>       <em class="jxr_comment">// only seek if we aren't at the end. cur == null implies 'end'.</em>
+<a class="jxr_linenumber" name="151" href="#151">151</a>       <strong class="jxr_keyword">if</strong> (cur != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="152" href="#152">152</a>         hfs.next();
+<a class="jxr_linenumber" name="153" href="#153">153</a>         setCurrentCell(hfs.getCell());
+<a class="jxr_linenumber" name="154" href="#154">154</a>         <strong class="jxr_keyword">if</strong> (hasMVCCInfo || <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded()) {
+<a class="jxr_linenumber" name="155" href="#155">155</a>           skipKVsNewerThanReadpoint();
+<a class="jxr_linenumber" name="156" href="#156">156</a>         }
+<a class="jxr_linenumber" name="157" href="#157">157</a>       }
+<a class="jxr_linenumber" name="158" href="#158">158</a>     } <strong class="jxr_keyword">catch</strong> (FileNotFoundException e) {
+<a class="jxr_linenumber" name="159" href="#159">159</a>       <strong class="jxr_keyword">throw</strong> e;
+<a class="jxr_linenumber" name="160" href="#160">160</a>     } <strong class="jxr_keyword">catch</strong>(IOException e) {
+<a class="jxr_linenumber" name="161" href="#161">161</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not iterate "</span> + <strong class="jxr_keyword">this</strong>, e);
+<a class="jxr_linenumber" name="162" href="#162">162</a>     }
+<a class="jxr_linenumber" name="163" href="#163">163</a>     <strong class="jxr_keyword">return</strong> retKey;
+<a class="jxr_linenumber" name="164" href="#164">164</a>   }
+<a class="jxr_linenumber" name="165" href="#165">165</a> 
+<a class="jxr_linenumber" name="166" href="#166">166</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> seek(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> key) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="167" href="#167">167</a>     <strong class="jxr_keyword">if</strong> (seekCount != <strong class="jxr_keyword">null</strong>) seekCount.incrementAndGet();
+<a class="jxr_linenumber" name="168" href="#168">168</a> 
+<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="170" href="#170">170</a>       <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="171" href="#171">171</a>         <strong class="jxr_keyword">if</strong>(!seekAtOrAfter(hfs, key)) {
+<a class="jxr_linenumber" name="172" href="#172">172</a>           <strong class="jxr_keyword">this</strong>.cur = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="173" href="#173">173</a>           <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="174" href="#174">174</a>         }
+<a class="jxr_linenumber" name="175" href="#175">175</a> 
+<a class="jxr_linenumber" name="176" href="#176">176</a>         setCurrentCell(hfs.getCell());
+<a class="jxr_linenumber" name="177" href="#177">177</a> 
+<a class="jxr_linenumber" name="178" href="#178">178</a>         <strong class="jxr_keyword">if</strong> (!hasMVCCInfo &amp;&amp; <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded()) {
+<a class="jxr_linenumber" name="179" href="#179">179</a>           <strong class="jxr_keyword">return</strong> skipKVsNewerThanReadpoint();
+<a class="jxr_linenumber" name="180" href="#180">180</a>         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="181" href="#181">181</a>           <strong class="jxr_keyword">return</strong> !hasMVCCInfo ? <strong class="jxr_keyword">true</strong> : skipKVsNewerThanReadpoint();
+<a class="jxr_linenumber" name="182" href="#182">182</a>         }
+<a class="jxr_linenumber" name="183" href="#183">183</a>       } <strong class="jxr_keyword">finally</strong> {
+<a class="jxr_linenumber" name="184" href="#184">184</a>         realSeekDone = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="185" href="#185">185</a>       }
+<a class="jxr_linenumber" name="186" href="#186">186</a>     } <strong class="jxr_keyword">catch</strong> (FileNotFoundException e) {
+<a class="jxr_linenumber" name="187" href="#187">187</a>       <strong class="jxr_keyword">throw</strong> e;
+<a class="jxr_linenumber" name="188" href="#188">188</a>     } <strong class="jxr_keyword">catch</strong> (IOException ioe) {
+<a class="jxr_linenumber" name="189" href="#189">189</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not seek "</span> + <strong class="jxr_keyword">this</strong> + <span class="jxr_string">" to key "</span> + key, ioe);
+<a class="jxr_linenumber" name="190" href="#190">190</a>     }
+<a class="jxr_linenumber" name="191" href="#191">191</a>   }
+<a class="jxr_linenumber" name="192" href="#192">192</a> 
+<a class="jxr_linenumber" name="193" href="#193">193</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> reseek(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> key) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="194" href="#194">194</a>     <strong class="jxr_keyword">if</strong> (seekCount != <strong class="jxr_keyword">null</strong>) seekCount.incrementAndGet();
+<a class="jxr_linenumber" name="195" href="#195">195</a> 
+<a class="jxr_linenumber" name="196" href="#196">196</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="197" href="#197">197</a>       <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="198" href="#198">198</a>         <strong class="jxr_keyword">if</strong> (!reseekAtOrAfter(hfs, key)) {
+<a class="jxr_linenumber" name="199" href="#199">199</a>           <strong class="jxr_keyword">this</strong>.cur = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="200" href="#200">200</a>           <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="201" href="#201">201</a>         }
+<a class="jxr_linenumber" name="202" href="#202">202</a>         setCurrentCell(hfs.getCell());
+<a class="jxr_linenumber" name="203" href="#203">203</a> 
+<a class="jxr_linenumber" name="204" href="#204">204</a>         <strong class="jxr_keyword">if</strong> (!hasMVCCInfo &amp;&amp; <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded()) {
+<a class="jxr_linenumber" name="205" href="#205">205</a>           <strong class="jxr_keyword">return</strong> skipKVsNewerThanReadpoint();
+<a class="jxr_linenumber" name="206" href="#206">206</a>         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="207" href="#207">207</a>           <strong class="jxr_keyword">return</strong> !hasMVCCInfo ? <strong class="jxr_keyword">true</strong> : skipKVsNewerThanReadpoint();
+<a class="jxr_linenumber" name="208" href="#208">208</a>         }
+<a class="jxr_linenumber" name="209" href="#209">209</a>       } <strong class="jxr_keyword">finally</strong> {
+<a class="jxr_linenumber" name="210" href="#210">210</a>         realSeekDone = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="211" href="#211">211</a>       }
+<a class="jxr_linenumber" name="212" href="#212">212</a>     } <strong class="jxr_keyword">catch</strong> (FileNotFoundException e) {
+<a class="jxr_linenumber" name="213" href="#213">213</a>       <strong class="jxr_keyword">throw</strong> e;
+<a class="jxr_linenumber" name="214" href="#214">214</a>     } <strong class="jxr_keyword">catch</strong> (IOException ioe) {
+<a class="jxr_linenumber" name="215" href="#215">215</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not reseek "</span> + <strong class="jxr_keyword">this</strong> + <span class="jxr_string">" to key "</span> + key,
+<a class="jxr_linenumber" name="216" href="#216">216</a>           ioe);
+<a class="jxr_linenumber" name="217" href="#217">217</a>     }
+<a class="jxr_linenumber" name="218" href="#218">218</a>   }
+<a class="jxr_linenumber" name="219" href="#219">219</a> 
+<a class="jxr_linenumber" name="220" href="#220">220</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setCurrentCell(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> newVal) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="221" href="#221">221</a>     <strong class="jxr_keyword">this</strong>.cur = newVal;
+<a class="jxr_linenumber" name="222" href="#222">222</a>     <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.cur != <strong class="jxr_keyword">null</strong> &amp;&amp; <strong class="jxr_keyword">this</strong>.reader.isBulkLoaded() &amp;&amp; !<strong class="jxr_keyword">this</strong>.reader.isSkipResetSeqId()) {
+<a class="jxr_linenumber" name="223" href="#223">223</a>       CellUtil.setSequenceId(cur, <strong class="jxr_keyword">this</strong>.reader.getSequenceID());
+<a class="jxr_linenumber" name="224" href="#224">224</a>     }
+<a class="jxr_linenumber" name="225" href="#225">225</a>   }
+<a class="jxr_linenumber" name="226" href="#226">226</a> 
+<a class="jxr_linenumber" name="227" href="#227">227</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> skipKVsNewerThanReadpoint() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="228" href="#228">228</a>     <em class="jxr_comment">// We want to ignore all key-values that are newer than our current</em>
+<a class="jxr_linenumber" name="229" href="#229">229</a>     <em class="jxr_comment">// readPoint</em>
+<a class="jxr_linenumber" name="230" href="#230">230</a>     <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> startKV = cur;
+<a class="jxr_linenumber" name="231" href="#231">231</a>     <strong class="jxr_keyword">while</strong>(enforceMVCC
+<a class="jxr_linenumber" name="232" href="#232">232</a>         &amp;&amp; cur != <strong class="jxr_keyword">null</strong>
+<a class="jxr_linenumber" name="233" href="#233">233</a>         &amp;&amp; (cur.getSequenceId() &gt; readPt)) {
+<a class="jxr_linenumber" name="234" href="#234">234</a>       hfs.next();
+<a class="jxr_linenumber" name="235" href="#235">235</a>       setCurrentCell(hfs.getCell());
+<a class="jxr_linenumber" name="236" href="#236">236</a>       <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.stopSkippingKVsIfNextRow
+<a class="jxr_linenumber" name="237" href="#237">237</a>           &amp;&amp; getComparator().compareRows(cur, startKV) &gt; 0) {
+<a class="jxr_linenumber" name="238" href="#238">238</a>         <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="239" href="#239">239</a>       }
+<a class="jxr_linenumber" name="240" href="#240">240</a>     }
+<a class="jxr_linenumber" name="241" href="#241">241</a> 
+<a class="jxr_linenumber" name="242" href="#242">242</a>     <strong class="jxr_keyword">if</strong> (cur == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="243" href="#243">243</a>       <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="244" href="#244">244</a>     }
+<a class="jxr_linenumber" name="245" href="#245">245</a> 
+<a class="jxr_linenumber" name="246" href="#246">246</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="247" href="#247">247</a>   }
+<a class="jxr_linenumber" name="248" href="#248">248</a> 
+<a class="jxr_linenumber" name="249" href="#249">249</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() {
+<a class="jxr_linenumber" name="250" href="#250">250</a>     <strong class="jxr_keyword">if</strong> (closed) <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="251" href="#251">251</a>     cur = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="252" href="#252">252</a>     <strong class="jxr_keyword">this</strong>.hfs.close();
+<a class="jxr_linenumber" name="253" href="#253">253</a>     <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.reader != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="254" href="#254">254</a>       <strong class="jxr_keyword">this</strong>.reader.decrementRefCount();
+<a class="jxr_linenumber" name="255" href="#255">255</a>     }
+<a class="jxr_linenumber" name="256" href="#256">256</a>     closed = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="257" href="#257">257</a>   }
+<a class="jxr_linenumber" name="258" href="#258">258</a> 
+<a class="jxr_linenumber" name="259" href="#259">259</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment">   *</em>
+<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment">   * @param s</em>
+<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment">   * @param k</em>
+<a class="jxr_linenumber" name="263" href="#263">263</a> <em class="jxr_javadoccomment">   * @return false if not found or if k is after the end.</em>
+<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
+<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="266" href="#266">266</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> seekAtOrAfter(<a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> s, <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> k)
+<a class="jxr_linenumber" name="267" href="#267">267</a>   <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="268" href="#268">268</a>     <strong class="jxr_keyword">int</strong> result = s.seekTo(k);
+<a class="jxr_linenumber" name="269" href="#269">269</a>     <strong class="jxr_keyword">if</strong>(result &lt; 0) {
+<a class="jxr_linenumber" name="270" href="#270">270</a>       <strong class="jxr_keyword">if</strong> (result == HConstants.INDEX_KEY_MAGIC) {
+<a class="jxr_linenumber" name="271" href="#271">271</a>         <em class="jxr_comment">// using faked key</em>
+<a class="jxr_linenumber" name="272" href="#272">272</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="273" href="#273">273</a>       }
+<a class="jxr_linenumber" name="274" href="#274">274</a>       <em class="jxr_comment">// Passed KV is smaller than first KV in file, work from start of file</em>
+<a class="jxr_linenumber" name="275" href="#275">275</a>       <strong class="jxr_keyword">return</strong> s.seekTo();
+<a class="jxr_linenumber" name="276" href="#276">276</a>     } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(result &gt; 0) {
+<a class="jxr_linenumber" name="277" href="#277">277</a>       <em class="jxr_comment">// Passed KV is larger than current KV in file, if there is a next</em>
+<a class="jxr_linenumber" name="278" href="#278">278</a>       <em class="jxr_comment">// it is the "after", if not then this scanner is done.</em>
+<a class="jxr_linenumber" name="279" href="#279">279</a>       <strong class="jxr_keyword">return</strong> s.next();
+<a class="jxr_linenumber" name="280" href="#280">280</a>     }
+<a class="jxr_linenumber" name="281" href="#281">281</a>     <em class="jxr_comment">// Seeked to the exact key</em>
+<a class="jxr_linenumber" name="282" href="#282">282</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="283" href="#283">283</a>   }
+<a class="jxr_linenumber" name="284" href="#284">284</a> 
+<a class="jxr_linenumber" name="285" href="#285">285</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> reseekAtOrAfter(<a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFileScanner.html">HFileScanner</a> s, <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> k)
+<a class="jxr_linenumber" name="286" href="#286">286</a>   <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="287" href="#287">287</a>     <em class="jxr_comment">//This function is similar to seekAtOrAfter function</em>
+<a class="jxr_linenumber" name="288" href="#288">288</a>     <strong class="jxr_keyword">int</strong> result = s.reseekTo(k);
+<a class="jxr_linenumber" name="289" href="#289">289</a>     <strong class="jxr_keyword">if</strong> (result &lt;= 0) {
+<a class="jxr_linenumber" name="290" href="#290">290</a>       <strong class="jxr_keyword">if</strong> (result == HConstants.INDEX_KEY_MAGIC) {
+<a class="jxr_linenumber" name="291" href="#291">291</a>         <em class="jxr_comment">// using faked key</em>
+<a class="jxr_linenumber" name="292" href="#292">292</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="293" href="#293">293</a>       }
+<a class="jxr_linenumber" name="294" href="#294">294</a>       <em class="jxr_comment">// If up to now scanner is not seeked yet, this means passed KV is smaller</em>
+<a class="jxr_linenumber" name="295" href="#295">295</a>       <em class="jxr_comment">// than first KV in file, and it is the first time we seek on this file.</em>
+<a class="jxr_linenumber" name="296" href="#296">296</a>       <em class="jxr_comment">// So we also need to work from the start of file.</em>
+<a class="jxr_linenumber" name="297" href="#297">297</a>       <strong class="jxr_keyword">if</strong> (!s.isSeeked()) {
+<a class="jxr_linenumber" name="298" href="#298">298</a>         <strong class="jxr_keyword">return</strong>  s.seekTo();
+<a class="jxr_linenumber" name="299" href="#299">299</a>       }
+<a class="jxr_linenumber" name="300" href="#300">300</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="301" href="#301">301</a>     }
+<a class="jxr_linenumber" name="302" href="#302">302</a>     <em class="jxr_comment">// passed KV is larger than current KV in file, if there is a next</em>
+<a class="jxr_linenumber" name="303" href="#303">303</a>     <em class="jxr_comment">// it is after, if not then this scanner is done.</em>
+<a class="jxr_linenumber" name="304" href="#304">304</a>     <strong class="jxr_keyword">return</strong> s.next();
+<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>   @Override
+<a class="jxr_linenumber" name="308" href="#308">308</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getSequenceID() {
+<a class="jxr_linenumber" name="309" href="#309">309</a>     <strong class="jxr_keyword">return</strong> reader.getSequenceID();
+<a class="jxr_linenumber" name="310" href="#310">310</a>   }
+<a class="jxr_linenumber" name="311" href="#311">311</a> 
+<a class="jxr_linenumber" name="312" href="#312">312</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_javadoccomment">   * Pretend we have done a seek but don't do it yet, if possible. The hope is</em>
+<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_javadoccomment">   * that we find requested columns in more recent files and won't have to seek</em>
+<a class="jxr_linenumber" name="315" href="#315">315</a> <em class="jxr_javadoccomment">   * in older files. Creates a fake key/value with the given row/column and the</em>
+<a class="jxr_linenumber" name="316" href="#316">316</a> <em class="jxr_javadoccomment">   * highest (most recent) possible timestamp we might get from this file. When</em>
+<a class="jxr_linenumber" name="317" href="#317">317</a> <em class="jxr_javadoccomment">   * users of such "lazy scanner" need to know the next KV precisely (e.g. when</em>
+<a class="jxr_linenumber" name="318" href="#318">318</a> <em class="jxr_javadoccomment">   * this scanner is at the top of the heap), they run {@link #enforceSeek()}.</em>
+<a class="jxr_linenumber" name="319" href="#319">319</a> <em class="jxr_javadoccomment">   * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="320" href="#320">320</a> <em class="jxr_javadoccomment">   * Note that this function does guarantee that the current KV of this scanner</em>
+<a class="jxr_linenumber" name="321" href="#321">321</a> <em class="jxr_javadoccomment">   * will be advanced to at least the given KV. Because of this, it does have</em>
+<a class="jxr_linenumber" name="322" href="#322">322</a> <em class="jxr_javadoccomment">   * to do a real seek in cases when the seek timestamp is older than the</em>
+<a class="jxr_linenumber" name="323" href="#323">323</a> <em class="jxr_javadoccomment">   * highest timestamp of the file, e.g. when we are trying to seek to the next</em>
+<a class="jxr_linenumber" name="324" href="#324">324</a> <em class="jxr_javadoccomment">   * row/column and use OLDEST_TIMESTAMP in the seek key.</em>
+<a class="jxr_linenumber" name="325" href="#325">325</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="326" href="#326">326</a>   @Override
+<a class="jxr_linenumber" name="327" href="#327">327</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> requestSeek(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> kv, <strong class="jxr_keyword">boolean</strong> forward, <strong class="jxr_keyword">boolean</strong> useBloom)
+<a class="jxr_linenumber" name="328" href="#328">328</a>       <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="329" href="#329">329</a>     <strong class="jxr_keyword">if</strong> (kv.getFamilyLength() == 0) {
+<a class="jxr_linenumber" name="330" href="#330">330</a>       useBloom = false;
+<a class="jxr_linenumber" name="331" href="#331">331</a>     }
+<a class="jxr_linenumber" name="332" href="#332">332</a> 
+<a class="jxr_linenumber" name="333" href="#333">333</a>     <strong class="jxr_keyword">boolean</strong> haveToSeek = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="334" href="#334">334</a>     <strong class="jxr_keyword">if</strong> (useBloom) {
+<a class="jxr_linenumber" name="335" href="#335">335</a>       <em class="jxr_comment">// check ROWCOL Bloom filter first.</em>
+<a class="jxr_linenumber" name="336" href="#336">336</a>       <strong class="jxr_keyword">if</strong> (reader.getBloomFilterType() == BloomType.ROWCOL) {
+<a class="jxr_linenumber" name="337" href="#337">337</a>         haveToSeek = reader.passesGeneralRowColBloomFilter(kv);
+<a class="jxr_linenumber" name="338" href="#338">338</a>       } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.matcher != <strong class="jxr_keyword">null</strong> &amp;&amp; !matcher.hasNullColumnInQuery() &amp;&amp;
+<a class="jxr_linenumber" name="339" href="#339">339</a>           ((CellUtil.isDeleteFamily(kv) || CellUtil.isDeleteFamilyVersion(kv)))) {
+<a class="jxr_linenumber" name="340" href="#340">340</a>         <em class="jxr_comment">// if there is no such delete family kv in the store file,</em>
+<a class="jxr_linenumber" name="341" href="#341">341</a>         <em class="jxr_comment">// then no need to seek.</em>
+<a class="jxr_linenumber" name="342" href="#342">342</a>         haveToSeek = reader.passesDeleteFamilyBloomFilter(kv.getRowArray(),
+<a class="jxr_linenumber" name="343" href="#343">343</a>             kv.getRowOffset(), kv.getRowLength());
+<a class="jxr_linenumber" name="344" href="#344">344</a>       }
+<a class="jxr_linenumber" name="345" href="#345">345</a>     }
 <a class="jxr_linenumber" name="346" href="#346">346</a> 
-<a class="jxr_linenumber" name="347" href="#347">347</a>     <strong class="jxr_keyword">if</strong> (haveToSeek) {
-<a class="jxr_linenumber" name="348" href="#348">348</a>       <em class="jxr_comment">// This row/column might be in this store file (or we did not use the</em>
-<a class="jxr_linenumber" name="349" href="#349">349</a>       <em class="jxr_comment">// Bloom filter), so we still need to seek.</em>
-<a class="jxr_linenumber" name="350" href="#350">350</a>       realSeekDone = false;
-<a class="jxr_linenumber" name="351" href="#351">351</a>       <strong class="jxr_keyword">long</strong> maxTimestampInFile = reader.getMaxTimestamp();
-<a class="jxr_linenumber" name="352" href="#352">352</a>       <strong class="jxr_keyword">long</strong> seekTimestamp = kv.getTimestamp();
-<a class="jxr_linenumber" name="353" href="#353">353</a>       <strong class="jxr_keyword">if</strong> (seekTimestamp &gt; maxTimestampInFile) {
-<a class="jxr_linenumber" name="354" href="#354">354</a>         <em class="jxr_comment">// Create a fake key that is not greater than the real next key.</em>
-<a class="jxr_linenumber" name="355" href="#355">355</a>         <em class="jxr_comment">// (Lower timestamps correspond to higher KVs.)</em>
-<a class="jxr_linenumber" name="356" href="#356">356</a>         <em class="jxr_comment">// To understand this better, consider that we are asked to seek to</em>
-<a class="jxr_linenumber" name="357" href="#357">357</a>         <em class="jxr_comment">// a higher timestamp than the max timestamp in this file. We know that</em>
-<a class="jxr_linenumber" name="358" href="#358">358</a>         <em class="jxr_comment">// the next point when we have to consider this file again is when we</em>
-<a class="jxr_linenumber" name="359" href="#359">359</a>         <em class="jxr_comment">// pass the max timestamp of this file (with the same row/column).</em>
-<a class="jxr_linenumber" name="360" href="#360">360</a>         setCurrentCell(CellUtil.createFirstOnRowColTS(kv, maxTimestampInFile));
-<a class="jxr_linenumber" name="361" href="#361">361</a>       } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="362" href="#362">362</a>         <em class="jxr_comment">// This will be the case e.g. when we need to seek to the next</em>
-<a class="jxr_linenumber" name="363" href="#363">363</a>         <em class="jxr_comment">// row/column, and we don't know exactly what they are, so we set the</em>
-<a class="jxr_linenumber" name="364" href="#364">364</a>         <em class="jxr_comment">// seek key's timestamp to OLDEST_TIMESTAMP to skip the rest of this</em>
-<a class="jxr_linenumber" name="365" href="#365">365</a>         <em class="jxr_comment">// row/column.</em>
-<a class="jxr_linenumber" name="366" href="#366">366</a>         enforceSeek();
-<a class="jxr_linenumber" name="367" href="#367">367</a>       }
-<a class="jxr_linenumber" name="368" href="#368">368</a>       <strong class="jxr_keyword">return</strong> cur != <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="369" href="#369">369</a>     }
-<a class="jxr_linenumber" name="370" href="#370">370</a> 
-<a class="jxr_linenumber" name="371" href="#371">371</a>     <em class="jxr_comment">// Multi-column Bloom filter optimization.</em>
-<a class="jxr_linenumber" name="372" href="#372">372</a>     <em class="jxr_comment">// Create a fake key/value, so that this scanner only bubbles up to the top</em>
-<a class="jxr_linenumber" name="373" href="#373">373</a>     <em class="jxr_comment">// of the KeyValueHeap in StoreScanner after we scanned this row/column in</em>
-<a class="jxr_linenumber" name="374" href="#374">374</a>     <em class="jxr_comment">// all other store files. The query matcher will then just skip this fake</em>
-<a class="jxr_linenumber" name="375" href="#375">375</a>     <em class="jxr_comment">// key/value and the store scanner will progress to the next column. This</em>
-<a class="jxr_linenumber" name="376" href="#376">376</a>     <em class="jxr_comment">// is obviously not a "real real" seek, but unlike the fake KV earlier in</em>
-<a class="jxr_linenumber" name="377" href="#377">377</a>     <em class="jxr_comment">// this method, we want this to be propagated to ScanQueryMatcher.</em>
-<a class="jxr_linenumber" name="378" href="#378">378</a>     setCurrentCell(CellUtil.createLastOnRowCol(kv));
-<a class="jxr_linenumber" name="379" href="#379">379</a> 
-<a class="jxr_linenumber" name="380" href="#380">380</a>     realSeekDone = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="381" href="#381">381</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="382" href="#382">382</a>   }
-<a class="jxr_linenumber" name="383" href="#383">383</a> 
-<a class="jxr_linenumber" name="384" href="#384">384</a>   <a href="../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html">Reader</a> getReader() {
-<a class="jxr_linenumber" name="385" href="#385">385</a>     <strong class="jxr_keyword">return</strong> reader;
-<a class="jxr_linenumber" name="386" href="#386">386</a>   }
-<a class="jxr_linenumber" name="387" href="#387">387</a> 
-<a class="jxr_linenumber" name="388" href="#388">388</a>   <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html">CellComparator</a> getComparator() {
-<a class="jxr_linenumber" name="389" href="#389">389</a>     <strong class="jxr_keyword">return</strong> reader.getComparator();
-<a class="jxr_linenumber" name="390" href="#390">390</a>   }
-<a class="jxr_linenumber" name="391" href="#391">391</a> 
-<a class="jxr_linenumber" name="392" href="#392">392</a>   @Override
-<a class="jxr_linenumber" name="393" href="#393">393</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> realSeekDone() {
-<a class="jxr_linenumber" name="394" href="#394">394</a>     <strong class="jxr_keyword">return</strong> realSeekDone;
-<a class="jxr_linenumber" name="395" href="#395">395</a>   }
-<a class="jxr_linenumber" name="396" href="#396">396</a> 
-<a class="jxr_linenumber" name="397" href="#397">397</a>   @Override
-<a class="jxr_linenumber" name="398" href="#398">398</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> enforceSeek() <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="399" href="#399">399</a>     <strong class="jxr_keyword">if</strong> (realSeekDone)
-<a class="jxr_linenumber" name="400" href="#400">400</a>       <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="401" href="#401">401</a> 
-<a class="jxr_linenumber" name="402" href="#402">402</a>     <strong class="jxr_keyword">if</strong> (delayedReseek) {
-<a class="jxr_linenumber" name="403" href="#403">403</a>       reseek(delayedSeekKV);
-<a class="jxr_linenumber" name="404" href="#404">404</a>     } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="405" href="#405">405</a>       seek(delayedSeekKV);
-<a class="jxr_linenumber" name="406" href="#406">406</a>     }
-<a class="jxr_linenumber" name="407" href="#407">407</a>   }
-<a class="jxr_linenumber" name="408" href="#408">408</a> 
-<a class="jxr_linenumber" name="409" href="#409">409</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setScanQueryMatcher(<a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher) {
-<a class="jxr_linenumber" name="410" href="#410">410</a>     <strong class="jxr_keyword">this</strong>.matcher = matcher;
-<a class="jxr_linenumber" name="411" href="#411">411</a>   }
-<a class="jxr_linenumber" name="412" href="#412">412</a> 
-<a class="jxr_linenumber" name="413" href="#413">413</a>   @Override
-<a class="jxr_linenumber" name="414" href="#414">414</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isFileScanner() {
-<a class="jxr_linenumber" name="415" href="#415">415</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="416" href="#416">416</a>   }
-<a class="jxr_linenumber" name="417" href="#417">417</a> 
-<a class="jxr_linenumber" name="418" href="#418">418</a>   <em class="jxr_comment">// Test methods</em>
-<a class="jxr_linenumber" name="419" href="#419">419</a> 
-<a class="jxr_linenumber" name="420" href="#420">420</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> getSeekCount() {
-<a class="jxr_linenumber" name="421" href="#421">421</a>     <strong class="jxr_keyword">return</strong> seekCount.get();
-<a class="jxr_linenumber" name="422" href="#422">422</a>   }
-<a class="jxr_linenumber" name="423" href="#423">423</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> instrument() {
-<a class="jxr_linenumber" name="424" href="#424">424</a>     seekCount = <strong class="jxr_keyword">new</strong> AtomicLong();
+<a class="jxr_linenumber" name="347" href="#347">347</a>     delayedReseek = forward;
+<a class="jxr_linenumber" name="348" href="#348">348</a>     delayedSeekKV = kv;
+<a class="jxr_linenumber" name="349" href="#349">349</a> 
+<a class="jxr_linenumber" name="350" href="#350">350</a>     <strong class="jxr_keyword">if</strong> (haveToSeek) {
+<a class="jxr_linenumber" name="351" href="#351">351</a>       <em class="jxr_comment">// This row/column might be in this store file (or we did not use the</em>
+<a class="jxr_linenumber" name="352" href="#352">352</a>       <em class="jxr_comment">// Bloom filter), so we still need to seek.</em>
+<a class="jxr_linenumber" name="353" href="#353">353</a>       realSeekDone = false;
+<a class="jxr_linenumber" name="354" href="#354">354</a>       <strong class="jxr_keyword">long</strong> maxTimestampInFile = reader.getMaxTimestamp();
+<a class="jxr_linenumber" name="355" href="#355">355</a>       <strong class="jxr_keyword">long</strong> seekTimestamp = kv.getTimestamp();
+<a class="jxr_linenumber" name="356" href="#356">356</a>       <strong class="jxr_keyword">if</strong> (seekTimestamp &gt; maxTimestampInFile) {
+<a class="jxr_linenumber" name="357" href="#357">357</a>         <em class="jxr_comment">// Create a fake key that is not greater than the real next key.</em>
+<a class="jxr_linenumber" name="358" href="#358">358</a>         <em class="jxr_comment">// (Lower timestamps correspond to higher KVs.)</em>
+<a class="jxr_linenumber" name="359" href="#359">359</a>         <em class="jxr_comment">// To understand this better, consider that we are asked to seek to</em>
+<a class="jxr_linenumber" name="360" href="#360">360</a>         <em class="jxr_comment">// a higher timestamp than the max timestamp in this file. We know that</em>
+<a class="jxr_linenumber" name="361" href="#361">361</a>         <em class="jxr_comment">// the next point when we have to consider this file again is when we</em>
+<a class="jxr_linenumber" name="362" href="#362">362</a>         <em class="jxr_comment">// pass the max timestamp of this file (with the same row/column).</em>
+<a class="jxr_linenumber" name="363" href="#363">363</a>         setCurrentCell(CellUtil.createFirstOnRowColTS(kv, maxTimestampInFile));
+<a class="jxr_linenumber" name="364" href="#364">364</a>       } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="365" href="#365">365</a>         <em class="jxr_comment">// This will be the case e.g. when we need to seek to the next</em>
+<a class="jxr_linenumber" name="366" href="#366">366</a>         <em class="jxr_comment">// row/column, and we don't know exactly what they are, so we set the</em>
+<a class="jxr_linenumber" name="367" href="#367">367</a>         <em class="jxr_comment">// seek key's timestamp to OLDEST_TIMESTAMP to skip the rest of this</em>
+<a class="jxr_linenumber" name="368" href="#368">368</a>         <em class="jxr_comment">// row/column.</em>
+<a class="jxr_linenumber" name="369" href="#369">369</a>         enforceSeek();
+<a class="jxr_linenumber" name="370" href="#370">370</

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