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Posted to commits@hbase.apache.org by mi...@apache.org on 2015/12/14 17:38:15 UTC
[04/45] hbase-site git commit: Published site at
04622254f7209c5cfeadcfa137a97fbed161075a.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/736088b3/xref/org/apache/hadoop/hbase/regionserver/StoreScanner.html
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diff --git a/xref/org/apache/hadoop/hbase/regionserver/StoreScanner.html b/xref/org/apache/hadoop/hbase/regionserver/StoreScanner.html
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+++ b/xref/org/apache/hadoop/hbase/regionserver/StoreScanner.html
@@ -37,865 +37,885 @@
<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.NavigableSet;
<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.util.Set;
<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.CountDownLatch;
-<a class="jxr_linenumber" name="30" href="#30">30</a>
-<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
-<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
-<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.Cell;
-<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.CellComparator;
-<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.CellUtil;
-<a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.DoNotRetryIOException;
-<a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.HConstants;
-<a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.KeyValue;
-<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience;
-<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.IsolationLevel;
-<a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Scan;
-<a class="jxr_linenumber" name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.executor.ExecutorService;
-<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.Filter;
-<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScanQueryMatcher.MatchCode;
-<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;
-<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScannerContext.NextState;
-<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.handler.ParallelSeekHandler;
-<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
-<a class="jxr_linenumber" name="49" href="#49">49</a>
-<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> com.google.common.annotations.VisibleForTesting;
-<a class="jxr_linenumber" name="51" href="#51">51</a>
-<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * Scanner scans both the memstore and the Store. Coalesce KeyValue stream</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * into List&lt;KeyValue&gt; for a single row.</em>
-<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a> @InterfaceAudience.Private
-<a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/NonReversedNonLazyKeyValueScanner.html">NonReversedNonLazyKeyValueScanner</a>
-<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">implements</strong> KeyValueScanner, InternalScanner, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ChangedReadersObserver.html">ChangedReadersObserver</a> {
-<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(StoreScanner.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_comment">// In unit tests, the store could be null</em>
-<a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store;
-<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher;
-<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/KeyValueHeap.html">KeyValueHeap</a> heap;
-<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> cacheBlocks;
-<a class="jxr_linenumber" name="65" href="#65">65</a>
-<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> countPerRow = 0;
-<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> storeLimit = -1;
-<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> storeOffset = 0;
-<a class="jxr_linenumber" name="69" href="#69">69</a>
-<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_comment">// Used to indicate that the scanner has closed (see HBASE-1107)</em>
-<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_comment">// Doesnt need to be volatile because it's always accessed via synchronized methods</em>
-<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> closing = false;
-<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> get;
-<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> explicitColumnQuery;
-<a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> useRowColBloom;
-<a class="jxr_linenumber" name="76" href="#76">76</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment"> * A flag that enables StoreFileScanner parallel-seeking</em>
-<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="79" href="#79">79</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> parallelSeekEnabled = false;
-<a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/executor/ExecutorService.html">ExecutorService</a> executor;
-<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan;
-<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns;
-<a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> oldestUnexpiredTS;
-<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> now;
-<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> minVersions;
-<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> maxRowSize;
-<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> cellsPerHeartbeatCheck;
-<a class="jxr_linenumber" name="88" href="#88">88</a>
-<a class="jxr_linenumber" name="89" href="#89">89</a> <em class="jxr_comment">// Collects all the KVHeap that are eagerly getting closed during the</em>
-<a class="jxr_linenumber" name="90" href="#90">90</a> <em class="jxr_comment">// course of a scan</em>
-<a class="jxr_linenumber" name="91" href="#91">91</a> <strong class="jxr_keyword">protected</strong> Set<KeyValueHeap> heapsForDelayedClose = <strong class="jxr_keyword">new</strong> HashSet<KeyValueHeap>();
-<a class="jxr_linenumber" name="92" href="#92">92</a>
-<a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_javadoccomment"> * The number of KVs seen by the scanner. Includes explicitly skipped KVs, but not</em>
-<a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_javadoccomment"> * KVs skipped via seeking to next row/column. TODO: estimate them?</em>
-<a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="97" href="#97">97</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> kvsScanned = 0;
-<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> prevCell = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="99" href="#99">99</a>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> We don't ever expect to change this, the constant is just for clarity. */</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> LAZY_SEEK_ENABLED_BY_DEFAULT = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String STORESCANNER_PARALLEL_SEEK_ENABLE =
-<a class="jxr_linenumber" name="103" href="#103">103</a> <span class="jxr_string">"hbase.storescanner.parallel.seek.enable"</span>;
-<a class="jxr_linenumber" name="104" href="#104">104</a>
-<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Used during unit testing to ensure that lazy seek does save seek ops */</em>
-<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> lazySeekEnabledGlobally =
-<a class="jxr_linenumber" name="107" href="#107">107</a> LAZY_SEEK_ENABLED_BY_DEFAULT;
-<a class="jxr_linenumber" name="108" href="#108">108</a>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment"> * The number of cells scanned in between timeout checks. Specifying a larger value means that</em>
-<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment"> * timeout checks will occur less frequently. Specifying a small value will lead to more frequent</em>
-<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment"> * timeout checks.</em>
-<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK =
-<a class="jxr_linenumber" name="115" href="#115">115</a> <span class="jxr_string">"hbase.cells.scanned.per.heartbeat.check"</span>;
-<a class="jxr_linenumber" name="116" href="#116">116</a>
-<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * Default value of {@link #HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK}.</em>
-<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK = 10000;
-<a class="jxr_linenumber" name="121" href="#121">121</a>
-<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_comment">// if heap == null and lastTop != null, you need to reseek given the key below</em>
-<a class="jxr_linenumber" name="123" href="#123">123</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> lastTop = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="124" href="#124">124</a>
-<a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_comment">// A flag whether use pread for scan</em>
-<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> scanUsePread = false;
-<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_comment">// Indicates whether there was flush during the course of the scan</em>
-<a class="jxr_linenumber" name="128" href="#128">128</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> flushed = false;
-<a class="jxr_linenumber" name="129" href="#129">129</a>
-<a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> readPt;
-<a class="jxr_linenumber" name="131" href="#131">131</a>
-<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_comment">// used by the injection framework to test race between StoreScanner construction and compaction</em>
-<a class="jxr_linenumber" name="133" href="#133">133</a> enum <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScannerCompactionRace</a> {
-<a class="jxr_linenumber" name="134" href="#134">134</a> BEFORE_SEEK,
-<a class="jxr_linenumber" name="135" href="#135">135</a> AFTER_SEEK,
-<a class="jxr_linenumber" name="136" href="#136">136</a> COMPACT_COMPLETE
-<a class="jxr_linenumber" name="137" href="#137">137</a> }
+<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.ReentrantLock;
+<a class="jxr_linenumber" name="31" href="#31">31</a>
+<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
+<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
+<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.Cell;
+<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.CellComparator;
+<a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.CellUtil;
+<a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.DoNotRetryIOException;
+<a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.HConstants;
+<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.KeyValue;
+<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience;
+<a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.IsolationLevel;
+<a class="jxr_linenumber" name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Scan;
+<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.executor.ExecutorService;
+<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.filter.Filter;
+<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScanQueryMatcher.MatchCode;
+<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;
+<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.ScannerContext.NextState;
+<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.regionserver.handler.ParallelSeekHandler;
+<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
+<a class="jxr_linenumber" name="50" href="#50">50</a>
+<a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">import</strong> com.google.common.annotations.VisibleForTesting;
+<a class="jxr_linenumber" name="52" href="#52">52</a>
+<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * Scanner scans both the memstore and the Store. Coalesce KeyValue stream</em>
+<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * into List&lt;KeyValue&gt; for a single row.</em>
+<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="57" href="#57">57</a> @InterfaceAudience.Private
+<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/NonReversedNonLazyKeyValueScanner.html">NonReversedNonLazyKeyValueScanner</a>
+<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">implements</strong> KeyValueScanner, InternalScanner, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ChangedReadersObserver.html">ChangedReadersObserver</a> {
+<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(StoreScanner.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_comment">// In unit tests, the store could be null</em>
+<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store;
+<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a> matcher;
+<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/KeyValueHeap.html">KeyValueHeap</a> heap;
+<a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> cacheBlocks;
+<a class="jxr_linenumber" name="66" href="#66">66</a>
+<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> countPerRow = 0;
+<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> storeLimit = -1;
+<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> storeOffset = 0;
+<a class="jxr_linenumber" name="70" href="#70">70</a>
+<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_comment">// Used to indicate that the scanner has closed (see HBASE-1107)</em>
+<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_comment">// Doesnt need to be volatile because it's always accessed via synchronized methods</em>
+<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> closing = false;
+<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> get;
+<a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> explicitColumnQuery;
+<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> useRowColBloom;
+<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment"> * A flag that enables StoreFileScanner parallel-seeking</em>
+<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> parallelSeekEnabled = false;
+<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/executor/ExecutorService.html">ExecutorService</a> executor;
+<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan;
+<a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns;
+<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> oldestUnexpiredTS;
+<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> now;
+<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> minVersions;
+<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> maxRowSize;
+<a class="jxr_linenumber" name="88" href="#88">88</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> cellsPerHeartbeatCheck;
+<a class="jxr_linenumber" name="89" href="#89">89</a>
+<a class="jxr_linenumber" name="90" href="#90">90</a> <em class="jxr_comment">// Collects all the KVHeap that are eagerly getting closed during the</em>
+<a class="jxr_linenumber" name="91" href="#91">91</a> <em class="jxr_comment">// course of a scan</em>
+<a class="jxr_linenumber" name="92" href="#92">92</a> <strong class="jxr_keyword">protected</strong> Set<KeyValueHeap> heapsForDelayedClose = <strong class="jxr_keyword">new</strong> HashSet<KeyValueHeap>();
+<a class="jxr_linenumber" name="93" href="#93">93</a>
+<a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_javadoccomment"> * The number of KVs seen by the scanner. Includes explicitly skipped KVs, but not</em>
+<a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_javadoccomment"> * KVs skipped via seeking to next row/column. TODO: estimate them?</em>
+<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> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> kvsScanned = 0;
+<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> prevCell = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="100" href="#100">100</a>
+<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> We don't ever expect to change this, the constant is just for clarity. */</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> LAZY_SEEK_ENABLED_BY_DEFAULT = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String STORESCANNER_PARALLEL_SEEK_ENABLE =
+<a class="jxr_linenumber" name="104" href="#104">104</a> <span class="jxr_string">"hbase.storescanner.parallel.seek.enable"</span>;
+<a class="jxr_linenumber" name="105" href="#105">105</a>
+<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Used during unit testing to ensure that lazy seek does save seek ops */</em>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> lazySeekEnabledGlobally =
+<a class="jxr_linenumber" name="108" href="#108">108</a> LAZY_SEEK_ENABLED_BY_DEFAULT;
+<a class="jxr_linenumber" name="109" href="#109">109</a>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment"> * The number of cells scanned in between timeout checks. Specifying a larger value means that</em>
+<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment"> * timeout checks will occur less frequently. Specifying a small value will lead to more frequent</em>
+<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment"> * timeout checks.</em>
+<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="115" href="#115">115</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK =
+<a class="jxr_linenumber" name="116" href="#116">116</a> <span class="jxr_string">"hbase.cells.scanned.per.heartbeat.check"</span>;
+<a class="jxr_linenumber" name="117" href="#117">117</a>
+<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment"> * Default value of {@link #HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK}.</em>
+<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="121" href="#121">121</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK = 10000;
+<a class="jxr_linenumber" name="122" href="#122">122</a>
+<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_comment">// if heap == null and lastTop != null, you need to reseek given the key below</em>
+<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> lastTop = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="125" href="#125">125</a>
+<a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_comment">// A flag whether use pread for scan</em>
+<a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> scanUsePread = false;
+<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_comment">// Indicates whether there was flush during the course of the scan</em>
+<a class="jxr_linenumber" name="129" href="#129">129</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> flushed = false;
+<a class="jxr_linenumber" name="130" href="#130">130</a> <em class="jxr_comment">// generally we get one file from a flush</em>
+<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">protected</strong> List<StoreFile> flushedStoreFiles = <strong class="jxr_keyword">new</strong> ArrayList<StoreFile>(1);
+<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_comment">// The current list of scanners</em>
+<a class="jxr_linenumber" name="133" href="#133">133</a> <strong class="jxr_keyword">protected</strong> List<KeyValueScanner> currentScanners = <strong class="jxr_keyword">new</strong> ArrayList<KeyValueScanner>();
+<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_comment">// flush update lock</em>
+<a class="jxr_linenumber" name="135" href="#135">135</a> <strong class="jxr_keyword">private</strong> ReentrantLock flushLock = <strong class="jxr_keyword">new</strong> ReentrantLock();
+<a class="jxr_linenumber" name="136" href="#136">136</a>
+<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> readPt;
<a class="jxr_linenumber" name="138" href="#138">138</a>
-<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> An internal constructor. */</em>
-<a class="jxr_linenumber" name="140" href="#140">140</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
-<a class="jxr_linenumber" name="141" href="#141">141</a> <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns, <strong class="jxr_keyword">long</strong> readPt, <strong class="jxr_keyword">boolean</strong> cacheBlocks) {
-<a class="jxr_linenumber" name="142" href="#142">142</a> <strong class="jxr_keyword">this</strong>.readPt = readPt;
-<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">this</strong>.store = store;
-<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">this</strong>.cacheBlocks = cacheBlocks;
-<a class="jxr_linenumber" name="145" href="#145">145</a> get = scan.isGetScan();
-<a class="jxr_linenumber" name="146" href="#146">146</a> <strong class="jxr_keyword">int</strong> numCol = columns == <strong class="jxr_keyword">null</strong> ? 0 : columns.size();
-<a class="jxr_linenumber" name="147" href="#147">147</a> explicitColumnQuery = numCol > 0;
-<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">this</strong>.scan = scan;
-<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">this</strong>.columns = columns;
-<a class="jxr_linenumber" name="150" href="#150">150</a> <strong class="jxr_keyword">this</strong>.now = EnvironmentEdgeManager.currentTime();
-<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">this</strong>.oldestUnexpiredTS = now - scanInfo.getTtl();
-<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">this</strong>.minVersions = scanInfo.getMinVersions();
-<a class="jxr_linenumber" name="153" href="#153">153</a>
-<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_comment">// We look up row-column Bloom filters for multi-column queries as part of</em>
-<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_comment">// the seek operation. However, we also look the row-column Bloom filter</em>
-<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_comment">// for multi-row (non-"get") scans because this is not done in</em>
-<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_comment">// StoreFile.passesBloomFilter(Scan, SortedSet<byte[]>).</em>
-<a class="jxr_linenumber" name="158" href="#158">158</a> <strong class="jxr_keyword">this</strong>.useRowColBloom = numCol > 1 || (!get && numCol == 1);
-<a class="jxr_linenumber" name="159" href="#159">159</a>
-<a class="jxr_linenumber" name="160" href="#160">160</a> <strong class="jxr_keyword">this</strong>.maxRowSize = scanInfo.getTableMaxRowSize();
-<a class="jxr_linenumber" name="161" href="#161">161</a> <strong class="jxr_keyword">this</strong>.scanUsePread = scan.isSmall()? <strong class="jxr_keyword">true</strong>: scanInfo.isUsePread();
-<a class="jxr_linenumber" name="162" href="#162">162</a> <strong class="jxr_keyword">this</strong>.cellsPerHeartbeatCheck = scanInfo.getCellsPerTimeoutCheck();
-<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_comment">// Parallel seeking is on if the config allows and more there is more than one store file.</em>
-<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.store != <strong class="jxr_keyword">null</strong> && <strong class="jxr_keyword">this</strong>.store.getStorefilesCount() > 1) {
-<a class="jxr_linenumber" name="165" href="#165">165</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/RegionServerServices.html">RegionServerServices</a> rsService = ((HStore)store).getHRegion().getRegionServerServices();
-<a class="jxr_linenumber" name="166" href="#166">166</a> <strong class="jxr_keyword">if</strong> (rsService != <strong class="jxr_keyword">null</strong> && scanInfo.isParallelSeekEnabled()) {
-<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">this</strong>.parallelSeekEnabled = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">this</strong>.executor = rsService.getExecutorService();
-<a class="jxr_linenumber" name="169" href="#169">169</a> }
-<a class="jxr_linenumber" name="170" href="#170">170</a> }
-<a class="jxr_linenumber" name="171" href="#171">171</a> }
-<a class="jxr_linenumber" name="172" href="#172">172</a>
-<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment"> * Opens a scanner across memstore, snapshot, and all StoreFiles. Assumes we</em>
-<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_javadoccomment"> * are not in a compaction.</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> <em class="jxr_javadoccomment"> * @param store who we scan</em>
-<a class="jxr_linenumber" name="178" href="#178">178</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
-<a class="jxr_linenumber" name="179" href="#179">179</a> <em class="jxr_javadoccomment"> * @param columns which columns we are scanning</em>
-<a class="jxr_linenumber" name="180" href="#180">180</a> <em class="jxr_javadoccomment"> * @throws IOException</em>
-<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="182" href="#182">182</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
-<a class="jxr_linenumber" name="183" href="#183">183</a> <strong class="jxr_keyword">long</strong> readPt)
-<a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">this</strong>(store, scan, scanInfo, columns, readPt, scan.getCacheBlocks());
-<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">if</strong> (columns != <strong class="jxr_keyword">null</strong> && scan.isRaw()) {
-<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/DoNotRetryIOException.html">DoNotRetryIOException</a>(<span class="jxr_string">"Cannot specify any column for a raw scan"</span>);
-<a class="jxr_linenumber" name="188" href="#188">188</a> }
-<a class="jxr_linenumber" name="189" href="#189">189</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, columns,
-<a class="jxr_linenumber" name="190" href="#190">190</a> ScanType.USER_SCAN, Long.MAX_VALUE, HConstants.LATEST_TIMESTAMP,
-<a class="jxr_linenumber" name="191" href="#191">191</a> oldestUnexpiredTS, now, store.getCoprocessorHost());
-<a class="jxr_linenumber" name="192" href="#192">192</a>
-<a class="jxr_linenumber" name="193" href="#193">193</a> <strong class="jxr_keyword">this</strong>.store.addChangedReaderObserver(<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="194" href="#194">194</a>
-<a class="jxr_linenumber" name="195" href="#195">195</a> <em class="jxr_comment">// Pass columns to try to filter out unnecessary StoreFiles.</em>
-<a class="jxr_linenumber" name="196" href="#196">196</a> List<KeyValueScanner> scanners = getScannersNoCompaction();
-<a class="jxr_linenumber" name="197" href="#197">197</a>
-<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_comment">// Seek all scanners to the start of the Row (or if the exact matching row</em>
-<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_comment">// key does not exist, then to the start of the next matching Row).</em>
-<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_comment">// Always check bloom filter to optimize the top row seek for delete</em>
-<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_comment">// family marker.</em>
-<a class="jxr_linenumber" name="202" href="#202">202</a> seekScanners(scanners, matcher.getStartKey(), explicitColumnQuery
-<a class="jxr_linenumber" name="203" href="#203">203</a> && lazySeekEnabledGlobally, parallelSeekEnabled);
+<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_comment">// used by the injection framework to test race between StoreScanner construction and compaction</em>
+<a class="jxr_linenumber" name="140" href="#140">140</a> enum <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScannerCompactionRace</a> {
+<a class="jxr_linenumber" name="141" href="#141">141</a> BEFORE_SEEK,
+<a class="jxr_linenumber" name="142" href="#142">142</a> AFTER_SEEK,
+<a class="jxr_linenumber" name="143" href="#143">143</a> COMPACT_COMPLETE
+<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> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> An internal constructor. */</em>
+<a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
+<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns, <strong class="jxr_keyword">long</strong> readPt, <strong class="jxr_keyword">boolean</strong> cacheBlocks) {
+<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">this</strong>.readPt = readPt;
+<a class="jxr_linenumber" name="150" href="#150">150</a> <strong class="jxr_keyword">this</strong>.store = store;
+<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">this</strong>.cacheBlocks = cacheBlocks;
+<a class="jxr_linenumber" name="152" href="#152">152</a> get = scan.isGetScan();
+<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">int</strong> numCol = columns == <strong class="jxr_keyword">null</strong> ? 0 : columns.size();
+<a class="jxr_linenumber" name="154" href="#154">154</a> explicitColumnQuery = numCol > 0;
+<a class="jxr_linenumber" name="155" href="#155">155</a> <strong class="jxr_keyword">this</strong>.scan = scan;
+<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">this</strong>.columns = columns;
+<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">this</strong>.now = EnvironmentEdgeManager.currentTime();
+<a class="jxr_linenumber" name="158" href="#158">158</a> <strong class="jxr_keyword">this</strong>.oldestUnexpiredTS = now - scanInfo.getTtl();
+<a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">this</strong>.minVersions = scanInfo.getMinVersions();
+<a class="jxr_linenumber" name="160" href="#160">160</a>
+<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_comment">// We look up row-column Bloom filters for multi-column queries as part of</em>
+<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_comment">// the seek operation. However, we also look the row-column Bloom filter</em>
+<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_comment">// for multi-row (non-"get") scans because this is not done in</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_comment">// StoreFile.passesBloomFilter(Scan, SortedSet<byte[]>).</em>
+<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">this</strong>.useRowColBloom = numCol > 1 || (!get && numCol == 1);
+<a class="jxr_linenumber" name="166" href="#166">166</a>
+<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">this</strong>.maxRowSize = scanInfo.getTableMaxRowSize();
+<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">this</strong>.scanUsePread = scan.isSmall()? <strong class="jxr_keyword">true</strong>: scanInfo.isUsePread();
+<a class="jxr_linenumber" name="169" href="#169">169</a> <strong class="jxr_keyword">this</strong>.cellsPerHeartbeatCheck = scanInfo.getCellsPerTimeoutCheck();
+<a class="jxr_linenumber" name="170" href="#170">170</a> <em class="jxr_comment">// Parallel seeking is on if the config allows and more there is more than one store file.</em>
+<a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.store != <strong class="jxr_keyword">null</strong> && <strong class="jxr_keyword">this</strong>.store.getStorefilesCount() > 1) {
+<a class="jxr_linenumber" name="172" href="#172">172</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/RegionServerServices.html">RegionServerServices</a> rsService = ((HStore)store).getHRegion().getRegionServerServices();
+<a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">if</strong> (rsService != <strong class="jxr_keyword">null</strong> && scanInfo.isParallelSeekEnabled()) {
+<a class="jxr_linenumber" name="174" href="#174">174</a> <strong class="jxr_keyword">this</strong>.parallelSeekEnabled = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="175" href="#175">175</a> <strong class="jxr_keyword">this</strong>.executor = rsService.getExecutorService();
+<a class="jxr_linenumber" name="176" href="#176">176</a> }
+<a class="jxr_linenumber" name="177" href="#177">177</a> }
+<a class="jxr_linenumber" name="178" href="#178">178</a> }
+<a class="jxr_linenumber" name="179" href="#179">179</a>
+<a class="jxr_linenumber" name="180" href="#180">180</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> addCurrentScanners(List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners) {
+<a class="jxr_linenumber" name="181" href="#181">181</a> <strong class="jxr_keyword">this</strong>.currentScanners.addAll(scanners);
+<a class="jxr_linenumber" name="182" href="#182">182</a> }
+<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment"> * Opens a scanner across memstore, snapshot, and all StoreFiles. Assumes we</em>
+<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment"> * are not in a compaction.</em>
+<a class="jxr_linenumber" name="186" href="#186">186</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="187" href="#187">187</a> <em class="jxr_javadoccomment"> * @param store who we scan</em>
+<a class="jxr_linenumber" name="188" href="#188">188</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
+<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_javadoccomment"> * @param columns which columns we are scanning</em>
+<a class="jxr_linenumber" name="190" href="#190">190</a> <em class="jxr_javadoccomment"> * @throws IOException</em>
+<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="192" href="#192">192</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
+<a class="jxr_linenumber" name="193" href="#193">193</a> <strong class="jxr_keyword">long</strong> readPt)
+<a class="jxr_linenumber" name="194" href="#194">194</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="195" href="#195">195</a> <strong class="jxr_keyword">this</strong>(store, scan, scanInfo, columns, readPt, scan.getCacheBlocks());
+<a class="jxr_linenumber" name="196" href="#196">196</a> <strong class="jxr_keyword">if</strong> (columns != <strong class="jxr_keyword">null</strong> && scan.isRaw()) {
+<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/DoNotRetryIOException.html">DoNotRetryIOException</a>(<span class="jxr_string">"Cannot specify any column for a raw scan"</span>);
+<a class="jxr_linenumber" name="198" href="#198">198</a> }
+<a class="jxr_linenumber" name="199" href="#199">199</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, columns,
+<a class="jxr_linenumber" name="200" href="#200">200</a> ScanType.USER_SCAN, Long.MAX_VALUE, HConstants.LATEST_TIMESTAMP,
+<a class="jxr_linenumber" name="201" href="#201">201</a> oldestUnexpiredTS, now, store.getCoprocessorHost());
+<a class="jxr_linenumber" name="202" href="#202">202</a>
+<a class="jxr_linenumber" name="203" href="#203">203</a> <strong class="jxr_keyword">this</strong>.store.addChangedReaderObserver(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="204" href="#204">204</a>
-<a class="jxr_linenumber" name="205" href="#205">205</a> <em class="jxr_comment">// set storeLimit</em>
-<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">this</strong>.storeLimit = scan.getMaxResultsPerColumnFamily();
+<a class="jxr_linenumber" name="205" href="#205">205</a> <em class="jxr_comment">// Pass columns to try to filter out unnecessary StoreFiles.</em>
+<a class="jxr_linenumber" name="206" href="#206">206</a> List<KeyValueScanner> scanners = getScannersNoCompaction();
<a class="jxr_linenumber" name="207" href="#207">207</a>
-<a class="jxr_linenumber" name="208" href="#208">208</a> <em class="jxr_comment">// set rowOffset</em>
-<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">this</strong>.storeOffset = scan.getRowOffsetPerColumnFamily();
-<a class="jxr_linenumber" name="210" href="#210">210</a>
-<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_comment">// Combine all seeked scanners with a heap</em>
-<a class="jxr_linenumber" name="212" href="#212">212</a> resetKVHeap(scanners, store.getComparator());
-<a class="jxr_linenumber" name="213" href="#213">213</a> }
+<a class="jxr_linenumber" name="208" href="#208">208</a> <em class="jxr_comment">// Seek all scanners to the start of the Row (or if the exact matching row</em>
+<a class="jxr_linenumber" name="209" href="#209">209</a> <em class="jxr_comment">// key does not exist, then to the start of the next matching Row).</em>
+<a class="jxr_linenumber" name="210" href="#210">210</a> <em class="jxr_comment">// Always check bloom filter to optimize the top row seek for delete</em>
+<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_comment">// family marker.</em>
+<a class="jxr_linenumber" name="212" href="#212">212</a> seekScanners(scanners, matcher.getStartKey(), explicitColumnQuery
+<a class="jxr_linenumber" name="213" href="#213">213</a> && lazySeekEnabledGlobally, parallelSeekEnabled);
<a class="jxr_linenumber" name="214" href="#214">214</a>
-<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment"> * Used for compactions.<p></em>
-<a class="jxr_linenumber" name="217" href="#217">217</a> <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="218" href="#218">218</a> <em class="jxr_javadoccomment"> * Opens a scanner across specified StoreFiles.</em>
-<a class="jxr_linenumber" name="219" href="#219">219</a> <em class="jxr_javadoccomment"> * @param store who we scan</em>
-<a class="jxr_linenumber" name="220" href="#220">220</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
-<a class="jxr_linenumber" name="221" href="#221">221</a> <em class="jxr_javadoccomment"> * @param scanners ancillary scanners</em>
-<a class="jxr_linenumber" name="222" href="#222">222</a> <em class="jxr_javadoccomment"> * @param smallestReadPoint the readPoint that we should use for tracking</em>
-<a class="jxr_linenumber" name="223" href="#223">223</a> <em class="jxr_javadoccomment"> * versions</em>
-<a class="jxr_linenumber" name="224" href="#224">224</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="225" href="#225">225</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
-<a class="jxr_linenumber" name="226" href="#226">226</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType,
-<a class="jxr_linenumber" name="227" href="#227">227</a> <strong class="jxr_keyword">long</strong> smallestReadPoint, <strong class="jxr_keyword">long</strong> earliestPutTs) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="228" href="#228">228</a> <strong class="jxr_keyword">this</strong>(store, scanInfo, scan, scanners, scanType, smallestReadPoint, earliestPutTs, <strong class="jxr_keyword">null</strong>, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="229" href="#229">229</a> }
-<a class="jxr_linenumber" name="230" href="#230">230</a>
-<a class="jxr_linenumber" name="231" href="#231">231</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="232" href="#232">232</a> <em class="jxr_javadoccomment"> * Used for compactions that drop deletes from a limited range of rows.<p></em>
-<a class="jxr_linenumber" name="233" href="#233">233</a> <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment"> * Opens a scanner across specified StoreFiles.</em>
-<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment"> * @param store who we scan</em>
-<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
-<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_javadoccomment"> * @param scanners ancillary scanners</em>
-<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment"> * @param smallestReadPoint the readPoint that we should use for tracking versions</em>
-<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_javadoccomment"> * @param dropDeletesFromRow The inclusive left bound of the range; can be EMPTY_START_ROW.</em>
-<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment"> * @param dropDeletesToRow The exclusive right bound of the range; can be EMPTY_END_ROW.</em>
-<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="242" href="#242">242</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
-<a class="jxr_linenumber" name="243" href="#243">243</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> smallestReadPoint, <strong class="jxr_keyword">long</strong> earliestPutTs,
-<a class="jxr_linenumber" name="244" href="#244">244</a> byte[] dropDeletesFromRow, byte[] dropDeletesToRow) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="245" href="#245">245</a> <strong class="jxr_keyword">this</strong>(store, scanInfo, scan, scanners, ScanType.COMPACT_RETAIN_DELETES, smallestReadPoint,
-<a class="jxr_linenumber" name="246" href="#246">246</a> earliestPutTs, dropDeletesFromRow, dropDeletesToRow);
-<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">private</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
-<a class="jxr_linenumber" name="250" href="#250">250</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">long</strong> smallestReadPoint,
-<a class="jxr_linenumber" name="251" href="#251">251</a> <strong class="jxr_keyword">long</strong> earliestPutTs, byte[] dropDeletesFromRow, byte[] dropDeletesToRow) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">this</strong>(store, scan, scanInfo, <strong class="jxr_keyword">null</strong>,
-<a class="jxr_linenumber" name="253" href="#253">253</a> ((<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html">HStore</a>)store).getHRegion().getReadpoint(IsolationLevel.READ_COMMITTED), false);
-<a class="jxr_linenumber" name="254" href="#254">254</a> <strong class="jxr_keyword">if</strong> (dropDeletesFromRow == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="255" href="#255">255</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, <strong class="jxr_keyword">null</strong>, scanType, smallestReadPoint,
-<a class="jxr_linenumber" name="256" href="#256">256</a> earliestPutTs, oldestUnexpiredTS, now, store.getCoprocessorHost());
-<a class="jxr_linenumber" name="257" href="#257">257</a> } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="258" href="#258">258</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, <strong class="jxr_keyword">null</strong>, smallestReadPoint, earliestPutTs,
-<a class="jxr_linenumber" name="259" href="#259">259</a> oldestUnexpiredTS, now, dropDeletesFromRow, dropDeletesToRow, store.getCoprocessorHost());
-<a class="jxr_linenumber" name="260" href="#260">260</a> }
-<a class="jxr_linenumber" name="261" href="#261">261</a>
-<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_comment">// Filter the list of scanners using Bloom filters, time range, TTL, etc.</em>
-<a class="jxr_linenumber" name="263" href="#263">263</a> scanners = selectScannersFrom(scanners);
-<a class="jxr_linenumber" name="264" href="#264">264</a>
-<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_comment">// Seek all scanners to the initial key</em>
-<a class="jxr_linenumber" name="266" href="#266">266</a> seekScanners(scanners, matcher.getStartKey(), false, parallelSeekEnabled);
-<a class="jxr_linenumber" name="267" href="#267">267</a>
-<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_comment">// Combine all seeked scanners with a heap</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a> resetKVHeap(scanners, store.getComparator());
-<a class="jxr_linenumber" name="270" href="#270">270</a> }
+<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_comment">// set storeLimit</em>
+<a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">this</strong>.storeLimit = scan.getMaxResultsPerColumnFamily();
+<a class="jxr_linenumber" name="217" href="#217">217</a>
+<a class="jxr_linenumber" name="218" href="#218">218</a> <em class="jxr_comment">// set rowOffset</em>
+<a class="jxr_linenumber" name="219" href="#219">219</a> <strong class="jxr_keyword">this</strong>.storeOffset = scan.getRowOffsetPerColumnFamily();
+<a class="jxr_linenumber" name="220" href="#220">220</a> addCurrentScanners(scanners);
+<a class="jxr_linenumber" name="221" href="#221">221</a> <em class="jxr_comment">// Combine all seeked scanners with a heap</em>
+<a class="jxr_linenumber" name="222" href="#222">222</a> resetKVHeap(scanners, store.getComparator());
+<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> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="226" href="#226">226</a> <em class="jxr_javadoccomment"> * Used for compactions.<p></em>
+<a class="jxr_linenumber" name="227" href="#227">227</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="228" href="#228">228</a> <em class="jxr_javadoccomment"> * Opens a scanner across specified StoreFiles.</em>
+<a class="jxr_linenumber" name="229" href="#229">229</a> <em class="jxr_javadoccomment"> * @param store who we scan</em>
+<a class="jxr_linenumber" name="230" href="#230">230</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
+<a class="jxr_linenumber" name="231" href="#231">231</a> <em class="jxr_javadoccomment"> * @param scanners ancillary scanners</em>
+<a class="jxr_linenumber" name="232" href="#232">232</a> <em class="jxr_javadoccomment"> * @param smallestReadPoint the readPoint that we should use for tracking</em>
+<a class="jxr_linenumber" name="233" href="#233">233</a> <em class="jxr_javadoccomment"> * versions</em>
+<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="235" href="#235">235</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
+<a class="jxr_linenumber" name="236" href="#236">236</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType,
+<a class="jxr_linenumber" name="237" href="#237">237</a> <strong class="jxr_keyword">long</strong> smallestReadPoint, <strong class="jxr_keyword">long</strong> earliestPutTs) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="238" href="#238">238</a> <strong class="jxr_keyword">this</strong>(store, scanInfo, scan, scanners, scanType, smallestReadPoint, earliestPutTs, <strong class="jxr_keyword">null</strong>, <strong class="jxr_keyword">null</strong>);
+<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> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="242" href="#242">242</a> <em class="jxr_javadoccomment"> * Used for compactions that drop deletes from a limited range of rows.<p></em>
+<a class="jxr_linenumber" name="243" href="#243">243</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="244" href="#244">244</a> <em class="jxr_javadoccomment"> * Opens a scanner across specified StoreFiles.</em>
+<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_javadoccomment"> * @param store who we scan</em>
+<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_javadoccomment"> * @param scan the spec</em>
+<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment"> * @param scanners ancillary scanners</em>
+<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment"> * @param smallestReadPoint the readPoint that we should use for tracking versions</em>
+<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment"> * @param dropDeletesFromRow The inclusive left bound of the range; can be EMPTY_START_ROW.</em>
+<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment"> * @param dropDeletesToRow The exclusive right bound of the range; can be EMPTY_END_ROW.</em>
+<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
+<a class="jxr_linenumber" name="253" href="#253">253</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> smallestReadPoint, <strong class="jxr_keyword">long</strong> earliestPutTs,
+<a class="jxr_linenumber" name="254" href="#254">254</a> byte[] dropDeletesFromRow, byte[] dropDeletesToRow) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="255" href="#255">255</a> <strong class="jxr_keyword">this</strong>(store, scanInfo, scan, scanners, ScanType.COMPACT_RETAIN_DELETES, smallestReadPoint,
+<a class="jxr_linenumber" name="256" href="#256">256</a> earliestPutTs, dropDeletesFromRow, dropDeletesToRow);
+<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> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Store.html">Store</a> store, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo, <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan,
+<a class="jxr_linenumber" name="260" href="#260">260</a> List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">long</strong> smallestReadPoint,
+<a class="jxr_linenumber" name="261" href="#261">261</a> <strong class="jxr_keyword">long</strong> earliestPutTs, byte[] dropDeletesFromRow, byte[] dropDeletesToRow) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="262" href="#262">262</a> <strong class="jxr_keyword">this</strong>(store, scan, scanInfo, <strong class="jxr_keyword">null</strong>,
+<a class="jxr_linenumber" name="263" href="#263">263</a> ((<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html">HStore</a>)store).getHRegion().getReadpoint(IsolationLevel.READ_COMMITTED), false);
+<a class="jxr_linenumber" name="264" href="#264">264</a> <strong class="jxr_keyword">if</strong> (dropDeletesFromRow == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="265" href="#265">265</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, <strong class="jxr_keyword">null</strong>, scanType, smallestReadPoint,
+<a class="jxr_linenumber" name="266" href="#266">266</a> earliestPutTs, oldestUnexpiredTS, now, store.getCoprocessorHost());
+<a class="jxr_linenumber" name="267" href="#267">267</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="268" href="#268">268</a> matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, <strong class="jxr_keyword">null</strong>, smallestReadPoint, earliestPutTs,
+<a class="jxr_linenumber" name="269" href="#269">269</a> oldestUnexpiredTS, now, dropDeletesFromRow, dropDeletesToRow, store.getCoprocessorHost());
+<a class="jxr_linenumber" name="270" href="#270">270</a> }
<a class="jxr_linenumber" name="271" href="#271">271</a>
-<a class="jxr_linenumber" name="272" href="#272">272</a> @VisibleForTesting
-<a class="jxr_linenumber" name="273" href="#273">273</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
-<a class="jxr_linenumber" name="274" href="#274">274</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
-<a class="jxr_linenumber" name="275" href="#275">275</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="276" href="#276">276</a> <strong class="jxr_keyword">this</strong>(scan, scanInfo, scanType, columns, scanners,
-<a class="jxr_linenumber" name="277" href="#277">277</a> HConstants.LATEST_TIMESTAMP,
-<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_comment">// 0 is passed as readpoint because the test bypasses Store</em>
-<a class="jxr_linenumber" name="279" href="#279">279</a> 0);
+<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_comment">// Filter the list of scanners using Bloom filters, time range, TTL, etc.</em>
+<a class="jxr_linenumber" name="273" href="#273">273</a> scanners = selectScannersFrom(scanners);
+<a class="jxr_linenumber" name="274" href="#274">274</a>
+<a class="jxr_linenumber" name="275" href="#275">275</a> <em class="jxr_comment">// Seek all scanners to the initial key</em>
+<a class="jxr_linenumber" name="276" href="#276">276</a> seekScanners(scanners, matcher.getStartKey(), false, parallelSeekEnabled);
+<a class="jxr_linenumber" name="277" href="#277">277</a> addCurrentScanners(scanners);
+<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_comment">// Combine all seeked scanners with a heap</em>
+<a class="jxr_linenumber" name="279" href="#279">279</a> resetKVHeap(scanners, store.getComparator());
<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> @VisibleForTesting
<a class="jxr_linenumber" name="283" href="#283">283</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
-<a class="jxr_linenumber" name="284" href="#284">284</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
-<a class="jxr_linenumber" name="285" href="#285">285</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> earliestPutTs)
-<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> <strong class="jxr_keyword">this</strong>(scan, scanInfo, scanType, columns, scanners, earliestPutTs,
-<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_comment">// 0 is passed as readpoint because the test bypasses Store</em>
-<a class="jxr_linenumber" name="289" href="#289">289</a> 0);
+<a class="jxr_linenumber" name="284" href="#284">284</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
+<a class="jxr_linenumber" name="285" href="#285">285</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="286" href="#286">286</a> <strong class="jxr_keyword">this</strong>(scan, scanInfo, scanType, columns, scanners,
+<a class="jxr_linenumber" name="287" href="#287">287</a> HConstants.LATEST_TIMESTAMP,
+<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_comment">// 0 is passed as readpoint because the test bypasses Store</em>
+<a class="jxr_linenumber" name="289" href="#289">289</a> 0);
<a class="jxr_linenumber" name="290" href="#290">290</a> }
<a class="jxr_linenumber" name="291" href="#291">291</a>
-<a class="jxr_linenumber" name="292" href="#292">292</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
-<a class="jxr_linenumber" name="293" href="#293">293</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
-<a class="jxr_linenumber" name="294" href="#294">294</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> earliestPutTs, <strong class="jxr_keyword">long</strong> readPt)
-<a class="jxr_linenumber" name="295" href="#295">295</a> <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="296" href="#296">296</a> <strong class="jxr_keyword">this</strong>(<strong class="jxr_keyword">null</strong>, scan, scanInfo, columns, readPt, scan.getCacheBlocks());
-<a class="jxr_linenumber" name="297" href="#297">297</a> <strong class="jxr_keyword">this</strong>.matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, columns, scanType,
-<a class="jxr_linenumber" name="298" href="#298">298</a> Long.MAX_VALUE, earliestPutTs, oldestUnexpiredTS, now, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="299" href="#299">299</a>
-<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_comment">// In unit tests, the store could be null</em>
-<a class="jxr_linenumber" name="301" href="#301">301</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.store != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="302" href="#302">302</a> <strong class="jxr_keyword">this</strong>.store.addChangedReaderObserver(<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="303" href="#303">303</a> }
-<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_comment">// Seek all scanners to the initial key</em>
-<a class="jxr_linenumber" name="305" href="#305">305</a> seekScanners(scanners, matcher.getStartKey(), false, parallelSeekEnabled);
-<a class="jxr_linenumber" name="306" href="#306">306</a> resetKVHeap(scanners, scanInfo.getComparator());
-<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"> * Get a filtered list of scanners. Assumes we are not in a compaction.</em>
-<a class="jxr_linenumber" name="311" href="#311">311</a> <em class="jxr_javadoccomment"> * @return list of scanners to seek</em>
-<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> <strong class="jxr_keyword">protected</strong> List<KeyValueScanner> getScannersNoCompaction() <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="314" href="#314">314</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> isCompaction = false;
-<a class="jxr_linenumber" name="315" href="#315">315</a> <strong class="jxr_keyword">boolean</strong> usePread = get || scanUsePread;
-<a class="jxr_linenumber" name="316" href="#316">316</a> <strong class="jxr_keyword">return</strong> selectScannersFrom(store.getScanners(cacheBlocks, get, usePread,
-<a class="jxr_linenumber" name="317" href="#317">317</a> isCompaction, matcher, scan.getStartRow(), scan.getStopRow(), <strong class="jxr_keyword">this</strong>.readPt));
+<a class="jxr_linenumber" name="292" href="#292">292</a> @VisibleForTesting
+<a class="jxr_linenumber" name="293" href="#293">293</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
+<a class="jxr_linenumber" name="294" href="#294">294</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
+<a class="jxr_linenumber" name="295" href="#295">295</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> earliestPutTs)
+<a class="jxr_linenumber" name="296" href="#296">296</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="297" href="#297">297</a> <strong class="jxr_keyword">this</strong>(scan, scanInfo, scanType, columns, scanners, earliestPutTs,
+<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_comment">// 0 is passed as readpoint because the test bypasses Store</em>
+<a class="jxr_linenumber" name="299" href="#299">299</a> 0);
+<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> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreScanner.html">StoreScanner</a>(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html">ScanInfo</a> scanInfo,
+<a class="jxr_linenumber" name="303" href="#303">303</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html">ScanType</a> scanType, <strong class="jxr_keyword">final</strong> NavigableSet<byte[]> columns,
+<a class="jxr_linenumber" name="304" href="#304">304</a> <strong class="jxr_keyword">final</strong> List<KeyValueScanner> scanners, <strong class="jxr_keyword">long</strong> earliestPutTs, <strong class="jxr_keyword">long</strong> readPt)
+<a class="jxr_linenumber" name="305" href="#305">305</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="306" href="#306">306</a> <strong class="jxr_keyword">this</strong>(<strong class="jxr_keyword">null</strong>, scan, scanInfo, columns, readPt, scan.getCacheBlocks());
+<a class="jxr_linenumber" name="307" href="#307">307</a> <strong class="jxr_keyword">this</strong>.matcher = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.html">ScanQueryMatcher</a>(scan, scanInfo, columns, scanType,
+<a class="jxr_linenumber" name="308" href="#308">308</a> Long.MAX_VALUE, earliestPutTs, oldestUnexpiredTS, now, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="309" href="#309">309</a>
+<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_comment">// In unit tests, the store could be null</em>
+<a class="jxr_linenumber" name="311" href="#311">311</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.store != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="312" href="#312">312</a> <strong class="jxr_keyword">this</strong>.store.addChangedReaderObserver(<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="313" href="#313">313</a> }
+<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_comment">// Seek all scanners to the initial key</em>
+<a class="jxr_linenumber" name="315" href="#315">315</a> seekScanners(scanners, matcher.getStartKey(), false, parallelSeekEnabled);
+<a class="jxr_linenumber" name="316" href="#316">316</a> addCurrentScanners(scanners);
+<a class="jxr_linenumber" name="317" href="#317">317</a> resetKVHeap(scanners, scanInfo.getComparator());
<a class="jxr_linenumber" name="318" href="#318">318</a> }
<a class="jxr_linenumber" name="319" href="#319">319</a>
<a class="jxr_linenumber" name="320" href="#320">320</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="321" href="#321">321</a> <em class="jxr_javadoccomment"> * Seek the specified scanners with the given key</em>
-<a class="jxr_linenumber" name="322" href="#322">322</a> <em class="jxr_javadoccomment"> * @param scanners</em>
-<a class="jxr_linenumber" name="323" href="#323">323</a> <em class="jxr_javadoccomment"> * @param seekKey</em>
-<a class="jxr_linenumber" name="324" href="#324">324</a> <em class="jxr_javadoccomment"> * @param isLazy true if using lazy seek</em>
-<a class="jxr_linenumber" name="325" href="#325">325</a> <em class="jxr_javadoccomment"> * @param isParallelSeek true if using parallel seek</em>
-<a class="jxr_linenumber" name="326" href="#326">326</a> <em class="jxr_javadoccomment"> * @throws IOException</em>
-<a class="jxr_linenumber" name="327" href="#327">327</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="328" href="#328">328</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> seekScanners(List<? <strong class="jxr_keyword">extends</strong> KeyValueScanner> scanners,
-<a class="jxr_linenumber" name="329" href="#329">329</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> seekKey, <strong class="jxr_keyword">boolean</strong> isLazy, <strong class="jxr_keyword">boolean</strong> isParallelSeek)
-<a
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