http://git-wip-us.apache.org/repos/asf/hbase/blob/2fa570dd/xref/org/apache/hadoop/hbase/regionserver/DefaultMemStore.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/hadoop/hbase/regionserver/DefaultMemStore.html b/xref/org/apache/hadoop/hbase/regionserver/DefaultMemStore.html index 15e2274..b8e1c14 100644 --- a/xref/org/apache/hadoop/hbase/regionserver/DefaultMemStore.html +++ b/xref/org/apache/hadoop/hbase/regionserver/DefaultMemStore.html @@ -50,949 +50,957 @@ <a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.KeyValueUtil; <a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience; <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.util.ByteRange; -<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; -<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.ClassSize; -<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.CollectionBackedScanner; -<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.EnvironmentEdgeManager; -<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.ReflectionUtils; -<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> org.apache.htrace.Trace; -<a class="jxr_linenumber" name="50" href="#50">50</a> -<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * The MemStore holds in-memory modifications to the Store. Modifications</em> -<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * are {@link Cell}s. When asked to flush, current memstore is moved</em> -<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * to snapshot and is cleared. We continue to serve edits out of new memstore</em> -<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * and backing snapshot until flusher reports in that the flush succeeded. At</em> -<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * this point we let the snapshot go.</em> -<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * The MemStore functions should not be called in parallel. Callers should hold</em> -<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * write and read locks. This is done in {@link HStore}.</em> -<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * </p></em> -<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * TODO: Adjust size of the memstore when we remove items because they have</em> -<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * been deleted.</em> -<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * TODO: With new KVSLS, need to make sure we update HeapSize with difference</em> -<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * in KV size.</em> -<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="67" href="#67">67</a> @InterfaceAudience.Private -<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStore.html">MemStore</a> { -<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(DefaultMemStore.<strong class="jxr_keyword">class</strong>); -<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String USEMSLAB_KEY = <span class="jxr_string">"hbase.hregion.memstore.mslab.enabled"</span>; -<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> USEMSLAB_DEFAULT = <strong class="jxr_keyword">true</strong>; -<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MSLAB_CLASS_NAME = <span class="jxr_string">"hbase.regionserver.mslab.class"</span>; -<a class="jxr_linenumber" name="73" href="#73">73</a> -<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">private</strong> Configuration conf; -<a class="jxr_linenumber" name="75" href="#75">75</a> -<a class="jxr_linenumber" name="76" href="#76">76</a> <em class="jxr_comment">// MemStore. Use a CellSkipListSet rather than SkipListSet because of the</em> -<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_comment">// better semantics. The Map will overwrite if passed a key it already had</em> -<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_comment">// whereas the Set will not add new Cell if key is same though value might be</em> -<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_comment">// different. Value is not important -- just make sure always same</em> -<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_comment">// reference passed.</em> -<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a> cellSet; -<a class="jxr_linenumber" name="82" href="#82">82</a> -<a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_comment">// Snapshot of memstore. Made for flusher.</em> -<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a> snapshot; -<a class="jxr_linenumber" name="85" href="#85">85</a> -<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html">CellComparator</a> comparator; -<a class="jxr_linenumber" name="87" href="#87">87</a> -<a class="jxr_linenumber" name="88" href="#88">88</a> <em class="jxr_comment">// Used to track own heapSize</em> -<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">final</strong> AtomicLong size; -<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> snapshotSize; -<a class="jxr_linenumber" name="91" href="#91">91</a> -<a class="jxr_linenumber" name="92" href="#92">92</a> <em class="jxr_comment">// Used to track when to flush</em> -<a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> timeOfOldestEdit = Long.MAX_VALUE; -<a class="jxr_linenumber" name="94" href="#94">94</a> -<a class="jxr_linenumber" name="95" href="#95">95</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a> timeRangeTracker; -<a class="jxr_linenumber" name="96" href="#96">96</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a> snapshotTimeRangeTracker; -<a class="jxr_linenumber" name="97" href="#97">97</a> -<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html">MemStoreLAB</a> allocator; -<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html">MemStoreLAB</a> snapshotAllocator; -<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> snapshotId; -<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> tagsPresent; -<a class="jxr_linenumber" name="102" href="#102">102</a> -<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment"> * Default constructor. Used for tests.</em> -<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a>() { -<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">this</strong>(HBaseConfiguration.create(), CellComparator.COMPARATOR); -<a class="jxr_linenumber" name="108" href="#108">108</a> } -<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"> * Constructor.</em> -<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment"> * @param c Comparator</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> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a>(<strong class="jxr_keyword">final</strong> Configuration conf, -<a class="jxr_linenumber" name="115" href="#115">115</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html">CellComparator</a> c) { -<a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">this</strong>.conf = conf; -<a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">this</strong>.comparator = c; -<a class="jxr_linenumber" name="118" href="#118">118</a> <strong class="jxr_keyword">this</strong>.cellSet = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(c); -<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">this</strong>.snapshot = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(c); -<a class="jxr_linenumber" name="120" href="#120">120</a> timeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); -<a class="jxr_linenumber" name="121" href="#121">121</a> snapshotTimeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); -<a class="jxr_linenumber" name="122" href="#122">122</a> <strong class="jxr_keyword">this</strong>.size = <strong class="jxr_keyword">new</strong> AtomicLong(DEEP_OVERHEAD); -<a class="jxr_linenumber" name="123" href="#123">123</a> <strong class="jxr_keyword">this</strong>.snapshotSize = 0; -<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">if</strong> (conf.getBoolean(USEMSLAB_KEY, USEMSLAB_DEFAULT)) { -<a class="jxr_linenumber" name="125" href="#125">125</a> String className = conf.get(MSLAB_CLASS_NAME, HeapMemStoreLAB.<strong class="jxr_keyword">class</strong>.getName()); -<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">this</strong>.allocator = ReflectionUtils.instantiateWithCustomCtor(className, -<a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">new</strong> Class[] { Configuration.<strong class="jxr_keyword">class</strong> }, <strong class="jxr_keyword">new</strong> Object[] { conf }); -<a class="jxr_linenumber" name="128" href="#128">128</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="129" href="#129">129</a> <strong class="jxr_keyword">this</strong>.allocator = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="130" href="#130">130</a> } -<a class="jxr_linenumber" name="131" href="#131">131</a> } -<a class="jxr_linenumber" name="132" href="#132">132</a> -<a class="jxr_linenumber" name="133" href="#133">133</a> <strong class="jxr_keyword">void</strong> dump() { -<a class="jxr_linenumber" name="134" href="#134">134</a> <strong class="jxr_keyword">for</strong> (Cell cell: <strong class="jxr_keyword">this</strong>.cellSet) { -<a class="jxr_linenumber" name="135" href="#135">135</a> LOG.info(cell); -<a class="jxr_linenumber" name="136" href="#136">136</a> } -<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">for</strong> (Cell cell: <strong class="jxr_keyword">this</strong>.snapshot) { -<a class="jxr_linenumber" name="138" href="#138">138</a> LOG.info(cell); -<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> -<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment"> * Creates a snapshot of the current memstore.</em> -<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment"> * Snapshot must be cleared by call to {@link #clearSnapshot(long)}</em> -<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="146" href="#146">146</a> @Override -<a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSnapshot.html">MemStoreSnapshot</a> snapshot() { -<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_comment">// If snapshot currently has entries, then flusher failed or didn't call</em> -<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_comment">// cleanup. Log a warning.</em> -<a class="jxr_linenumber" name="150" href="#150">150</a> <strong class="jxr_keyword">if</strong> (!<strong class="jxr_keyword">this</strong>.snapshot.isEmpty()) { -<a class="jxr_linenumber" name="151" href="#151">151</a> LOG.warn(<span class="jxr_string">"Snapshot called again without clearing previous. "</span> + -<a class="jxr_linenumber" name="152" href="#152">152</a> <span class="jxr_string">"Doing nothing. Another ongoing flush or did we fail last attempt?"</span>); -<a class="jxr_linenumber" name="153" href="#153">153</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="154" href="#154">154</a> <strong class="jxr_keyword">this</strong>.snapshotId = EnvironmentEdgeManager.currentTime(); -<a class="jxr_linenumber" name="155" href="#155">155</a> <strong class="jxr_keyword">this</strong>.snapshotSize = keySize(); -<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">if</strong> (!<strong class="jxr_keyword">this</strong>.cellSet.isEmpty()) { -<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">this</strong>.snapshot = <strong class="jxr_keyword">this</strong>.cellSet; -<a class="jxr_linenumber" name="158" href="#158">158</a> <strong class="jxr_keyword">this</strong>.cellSet = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(<strong class="jxr_keyword">this</strong>.comparator); -<a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">this</strong>.snapshotTimeRangeTracker = <strong class="jxr_keyword">this</strong>.timeRangeTracker; -<a class="jxr_linenumber" name="160" href="#160">160</a> <strong class="jxr_keyword">this</strong>.timeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); -<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_comment">// Reset heap to not include any keys</em> -<a class="jxr_linenumber" name="162" href="#162">162</a> <strong class="jxr_keyword">this</strong>.size.set(DEEP_OVERHEAD); -<a class="jxr_linenumber" name="163" href="#163">163</a> <strong class="jxr_keyword">this</strong>.snapshotAllocator = <strong class="jxr_keyword">this</strong>.allocator; -<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_comment">// Reset allocator so we get a fresh buffer for the new memstore</em> -<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">if</strong> (allocator != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="166" href="#166">166</a> String className = conf.get(MSLAB_CLASS_NAME, HeapMemStoreLAB.<strong class="jxr_keyword">class</strong>.getName()); -<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">this</strong>.allocator = ReflectionUtils.instantiateWithCustomCtor(className, -<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">new</strong> Class[] { Configuration.<strong class="jxr_keyword">class</strong> }, <strong class="jxr_keyword">new</strong> Object[] { conf }); -<a class="jxr_linenumber" name="169" href="#169">169</a> } -<a class="jxr_linenumber" name="170" href="#170">170</a> timeOfOldestEdit = Long.MAX_VALUE; -<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> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSnapshot.html">MemStoreSnapshot</a> memStoreSnapshot = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSnapshot.html">MemStoreSnapshot</a>(<strong class="jxr_keyword">this</strong>.snapshotId, snapshot.size(), <strong class="jxr_keyword">this</strong>.snapshotSize, -<a class="jxr_linenumber" name="174" href="#174">174</a> <strong class="jxr_keyword">this</strong>.snapshotTimeRangeTracker, <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/util/CollectionBackedScanner.html">CollectionBackedScanner</a>(snapshot, <strong class="jxr_keyword">this</strong>.comparator), -<a class="jxr_linenumber" name="175" href="#175">175</a> <strong class="jxr_keyword">this</strong>.tagsPresent); -<a class="jxr_linenumber" name="176" href="#176">176</a> <strong class="jxr_keyword">this</strong>.tagsPresent = false; -<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">return</strong> memStoreSnapshot; -<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> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment"> * The passed snapshot was successfully persisted; it can be let go.</em> -<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_javadoccomment"> * @param id Id of the snapshot to clean out.</em> -<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment"> * @throws UnexpectedStateException</em> -<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment"> * @see #snapshot()</em> -<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="186" href="#186">186</a> @Override -<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clearSnapshot(<strong class="jxr_keyword">long</strong> id) <strong class="jxr_keyword">throws</strong> UnexpectedStateException { -<a class="jxr_linenumber" name="188" href="#188">188</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html">MemStoreLAB</a> tmpAllocator = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.snapshotId != id) { -<a class="jxr_linenumber" name="190" href="#190">190</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/UnexpectedStateException.html">UnexpectedStateException</a>(<span class="jxr_string">"Current snapshot id is "</span> + <strong class="jxr_keyword">this</strong>.snapshotId + <span class="jxr_string">",passed "</span> -<a class="jxr_linenumber" name="191" href="#191">191</a> + id); -<a class="jxr_linenumber" name="192" href="#192">192</a> } -<a class="jxr_linenumber" name="193" href="#193">193</a> <em class="jxr_comment">// OK. Passed in snapshot is same as current snapshot. If not-empty,</em> -<a class="jxr_linenumber" name="194" href="#194">194</a> <em class="jxr_comment">// create a new snapshot and let the old one go.</em> -<a class="jxr_linenumber" name="195" href="#195">195</a> <strong class="jxr_keyword">if</strong> (!<strong class="jxr_keyword">this</strong>.snapshot.isEmpty()) { -<a class="jxr_linenumber" name="196" href="#196">196</a> <strong class="jxr_keyword">this</strong>.snapshot = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(<strong class="jxr_keyword">this</strong>.comparator); -<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">this</strong>.snapshotTimeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); -<a class="jxr_linenumber" name="198" href="#198">198</a> } -<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">this</strong>.snapshotSize = 0; -<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">this</strong>.snapshotId = -1; -<a class="jxr_linenumber" name="201" href="#201">201</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.snapshotAllocator != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="202" href="#202">202</a> tmpAllocator = <strong class="jxr_keyword">this</strong>.snapshotAllocator; -<a class="jxr_linenumber" name="203" href="#203">203</a> <strong class="jxr_keyword">this</strong>.snapshotAllocator = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="204" href="#204">204</a> } -<a class="jxr_linenumber" name="205" href="#205">205</a> <strong class="jxr_keyword">if</strong> (tmpAllocator != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="206" href="#206">206</a> tmpAllocator.close(); -<a class="jxr_linenumber" name="207" href="#207">207</a> } -<a class="jxr_linenumber" name="208" href="#208">208</a> } -<a class="jxr_linenumber" name="209" href="#209">209</a> -<a class="jxr_linenumber" name="210" href="#210">210</a> @Override -<a class="jxr_linenumber" name="211" href="#211">211</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getFlushableSize() { -<a class="jxr_linenumber" name="212" href="#212">212</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.snapshotSize > 0 ? <strong class="jxr_keyword">this</strong>.snapshotSize : keySize(); -<a class="jxr_linenumber" name="213" href="#213">213</a> } -<a class="jxr_linenumber" name="214" href="#214">214</a> -<a class="jxr_linenumber" name="215" href="#215">215</a> @Override -<a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getSnapshotSize() { -<a class="jxr_linenumber" name="217" href="#217">217</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.snapshotSize; -<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> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="221" href="#221">221</a> <em class="jxr_javadoccomment"> * Write an update</em> -<a class="jxr_linenumber" name="222" href="#222">222</a> <em class="jxr_javadoccomment"> * @param cell</em> -<a class="jxr_linenumber" name="223" href="#223">223</a> <em class="jxr_javadoccomment"> * @return approximate size of the passed Cell.</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> @Override -<a class="jxr_linenumber" name="226" href="#226">226</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> add(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) { -<a class="jxr_linenumber" name="227" href="#227">227</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> toAdd = maybeCloneWithAllocator(cell); -<a class="jxr_linenumber" name="228" href="#228">228</a> <strong class="jxr_keyword">return</strong> internalAdd(toAdd); -<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> @Override -<a class="jxr_linenumber" name="232" href="#232">232</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> timeOfOldestEdit() { -<a class="jxr_linenumber" name="233" href="#233">233</a> <strong class="jxr_keyword">return</strong> timeOfOldestEdit; -<a class="jxr_linenumber" name="234" href="#234">234</a> } -<a class="jxr_linenumber" name="235" href="#235">235</a> -<a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> addToCellSet(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> e) { -<a class="jxr_linenumber" name="237" href="#237">237</a> <strong class="jxr_keyword">boolean</strong> b = <strong class="jxr_keyword">this</strong>.cellSet.add(e); -<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_comment">// In no tags case this NoTagsKeyValue.getTagsLength() is a cheap call.</em> -<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_comment">// When we use ACL CP or Visibility CP which deals with Tags during</em> -<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_comment">// mutation, the TagRewriteCell.getTagsLength() is a cheaper call. We do not</em> -<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_comment">// parse the byte[] to identify the tags length.</em> -<a class="jxr_linenumber" name="242" href="#242">242</a> <strong class="jxr_keyword">if</strong>(e.getTagsLength() > 0) { -<a class="jxr_linenumber" name="243" href="#243">243</a> tagsPresent = <strong class="jxr_keyword">true</strong>; -<a class="jxr_linenumber" name="244" href="#244">244</a> } -<a class="jxr_linenumber" name="245" href="#245">245</a> setOldestEditTimeToNow(); -<a class="jxr_linenumber" name="246" href="#246">246</a> <strong class="jxr_keyword">return</strong> b; -<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> <strong class="jxr_keyword">boolean</strong> removeFromCellSet(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> e) { -<a class="jxr_linenumber" name="250" href="#250">250</a> <strong class="jxr_keyword">boolean</strong> b = <strong class="jxr_keyword">this</strong>.cellSet.remove(e); -<a class="jxr_linenumber" name="251" href="#251">251</a> setOldestEditTimeToNow(); -<a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">return</strong> b; -<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> <strong class="jxr_keyword">void</strong> setOldestEditTimeToNow() { -<a class="jxr_linenumber" name="256" href="#256">256</a> <strong class="jxr_keyword">if</strong> (timeOfOldestEdit == Long.MAX_VALUE) { -<a class="jxr_linenumber" name="257" href="#257">257</a> timeOfOldestEdit = EnvironmentEdgeManager.currentTime(); -<a class="jxr_linenumber" name="258" href="#258">258</a> } -<a class="jxr_linenumber" name="259" href="#259">259</a> } -<a class="jxr_linenumber" name="260" href="#260">260</a> -<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment"> * Internal version of add() that doesn't clone Cells with the</em> -<a class="jxr_linenumber" name="263" href="#263">263</a> <em class="jxr_javadoccomment"> * allocator, and doesn't take the lock.</em> -<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment"> * Callers should ensure they already have the read lock taken</em> -<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="267" href="#267">267</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> internalAdd(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> toAdd) { -<a class="jxr_linenumber" name="268" href="#268">268</a> <strong class="jxr_keyword">long</strong> s = heapSizeChange(toAdd, addToCellSet(toAdd)); -<a class="jxr_linenumber" name="269" href="#269">269</a> timeRangeTracker.includeTimestamp(toAdd); -<a class="jxr_linenumber" name="270" href="#270">270</a> <strong class="jxr_keyword">this</strong>.size.addAndGet(s); -<a class="jxr_linenumber" name="271" href="#271">271</a> <strong class="jxr_keyword">return</strong> s; -<a class="jxr_linenumber" name="272" href="#272">272</a> } -<a class="jxr_linenumber" name="273" href="#273">273</a> -<a class="jxr_linenumber" name="274" href="#274">274</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> maybeCloneWithAllocator(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) { -<a class="jxr_linenumber" name="275" href="#275">275</a> <strong class="jxr_keyword">if</strong> (allocator == <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="276" href="#276">276</a> <strong class="jxr_keyword">return</strong> cell; -<a class="jxr_linenumber" name="277" href="#277">277</a> } -<a class="jxr_linenumber" name="278" href="#278">278</a> -<a class="jxr_linenumber" name="279" href="#279">279</a> <strong class="jxr_keyword">int</strong> len = KeyValueUtil.length(cell); -<a class="jxr_linenumber" name="280" href="#280">280</a> <a href="../../../../../org/apache/hadoop/hbase/util/ByteRange.html">ByteRange</a> alloc = allocator.allocateBytes(len); -<a class="jxr_linenumber" name="281" href="#281">281</a> <strong class="jxr_keyword">if</strong> (alloc == <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_comment">// The allocation was too large, allocator decided</em> -<a class="jxr_linenumber" name="283" href="#283">283</a> <em class="jxr_comment">// not to do anything with it.</em> -<a class="jxr_linenumber" name="284" href="#284">284</a> <strong class="jxr_keyword">return</strong> cell; -<a class="jxr_linenumber" name="285" href="#285">285</a> } -<a class="jxr_linenumber" name="286" href="#286">286</a> assert alloc.getBytes() != <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="287" href="#287">287</a> KeyValueUtil.appendToByteArray(cell, alloc.getBytes(), alloc.getOffset()); -<a class="jxr_linenumber" name="288" href="#288">288</a> <a href="../../../../../org/apache/hadoop/hbase/KeyValue.html">KeyValue</a> newKv = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/KeyValue.html">KeyValue</a>(alloc.getBytes(), alloc.getOffset(), len); -<a class="jxr_linenumber" name="289" href="#289">289</a> newKv.setSequenceId(cell.getSequenceId()); -<a class="jxr_linenumber" name="290" href="#290">290</a> <strong class="jxr_keyword">return</strong> newKv; -<a class="jxr_linenumber" name="291" href="#291">291</a> } -<a class="jxr_linenumber" name="292" href="#292">292</a> -<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="294" href="#294">294</a> <em class="jxr_javadoccomment"> * Remove n key from the memstore. Only cells that have the same key and the</em> -<a class="jxr_linenumber" name="295" href="#295">295</a> <em class="jxr_javadoccomment"> * same memstoreTS are removed. It is ok to not update timeRangeTracker</em> -<a class="jxr_linenumber" name="296" href="#296">296</a> <em class="jxr_javadoccomment"> * in this call. It is possible that we can optimize this method by using</em> -<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_javadoccomment"> * tailMap/iterator, but since this method is called rarely (only for</em> -<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_javadoccomment"> * error recovery), we can leave those optimization for the future.</em> -<a class="jxr_linenumber" name="299" href="#299">299</a> <em class="jxr_javadoccomment"> * @param cell</em> -<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="301" href="#301">301</a> @Override -<a class="jxr_linenumber" name="302" href="#302">302</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> rollback(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) { -<a class="jxr_linenumber" name="303" href="#303">303</a> <em class="jxr_comment">// If the key is in the snapshot, delete it. We should not update</em> -<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_comment">// this.size, because that tracks the size of only the memstore and</em> -<a class="jxr_linenumber" name="305" href="#305">305</a> <em class="jxr_comment">// not the snapshot. The flush of this snapshot to disk has not</em> -<a class="jxr_linenumber" name="306" href="#306">306</a> <em class="jxr_comment">// yet started because Store.flush() waits for all rwcc transactions to</em> -<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_comment">// commit before starting the flush to disk.</em> -<a class="jxr_linenumber" name="308" href="#308">308</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> found = <strong class="jxr_keyword">this</strong>.snapshot.get(cell); -<a class="jxr_linenumber" name="309" href="#309">309</a> <strong class="jxr_keyword">if</strong> (found != <strong class="jxr_keyword">null</strong> && found.getSequenceId() == cell.getSequenceId()) { -<a class="jxr_linenumber" name="310" href="#310">310</a> <strong class="jxr_keyword">this</strong>.snapshot.remove(cell); -<a class="jxr_linenumber" name="311" href="#311">311</a> <strong class="jxr_keyword">long</strong> sz = heapSizeChange(cell, <strong class="jxr_keyword">true</strong>); -<a class="jxr_linenumber" name="312" href="#312">312</a> <strong class="jxr_keyword">this</strong>.snapshotSize -= sz; -<a class="jxr_linenumber" name="313" href="#313">313</a> } -<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_comment">// If the key is in the memstore, delete it. Update this.size.</em> -<a class="jxr_linenumber" name="315" href="#315">315</a> found = <strong class="jxr_keyword">this</strong>.cellSet.get(cell); -<a class="jxr_linenumber" name="316" href="#316">316</a> <strong class="jxr_keyword">if</strong> (found != <strong class="jxr_keyword">null</strong> && found.getSequenceId() == cell.getSequenceId()) { -<a class="jxr_linenumber" name="317" href="#317">317</a> removeFromCellSet(cell); -<a class="jxr_linenumber" name="318" href="#318">318</a> <strong class="jxr_keyword">long</strong> s = heapSizeChange(cell, <strong class="jxr_keyword">true</strong>); -<a class="jxr_linenumber" name="319" href="#319">319</a> <strong class="jxr_keyword">this</strong>.size.addAndGet(-s); -<a class="jxr_linenumber" name="320" href="#320">320</a> } -<a class="jxr_linenumber" name="321" href="#321">321</a> } -<a class="jxr_linenumber" name="322" href="#322">322</a> -<a class="jxr_linenumber" name="323" href="#323">323</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="324" href="#324">324</a> <em class="jxr_javadoccomment"> * Write a delete</em> -<a class="jxr_linenumber" name="325" href="#325">325</a> <em class="jxr_javadoccomment"> * @param deleteCell</em> -<a class="jxr_linenumber" name="326" href="#326">326</a> <em class="jxr_javadoccomment"> * @return approximate size of the passed key and value.</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> @Override -<a class="jxr_linenumber" name="329" href="#329">329</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> delete(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> deleteCell) { -<a class="jxr_linenumber" name="330" href="#330">330</a> <strong class="jxr_keyword">long</strong> s = 0; -<a class="jxr_linenumber" name="331" href="#331">331</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> toAdd = maybeCloneWithAllocator(deleteCell); -<a class="jxr_linenumber" name="332" href="#332">332</a> s += heapSizeChange(toAdd, addToCellSet(toAdd)); -<a class="jxr_linenumber" name="333" href="#333">333</a> timeRangeTracker.includeTimestamp(toAdd); -<a class="jxr_linenumber" name="334" href="#334">334</a> <strong class="jxr_keyword">this</strong>.size.addAndGet(s); -<a class="jxr_linenumber" name="335" href="#335">335</a> <strong class="jxr_keyword">return</strong> s; -<a class="jxr_linenumber" name="336" href="#336">336</a> } -<a class="jxr_linenumber" name="337" href="#337">337</a> -<a class="jxr_linenumber" name="338" href="#338">338</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="339" href="#339">339</a> <em class="jxr_javadoccomment"> * @param cell Find the row that comes after this one. If null, we return the</em> -<a class="jxr_linenumber" name="340" href="#340">340</a> <em class="jxr_javadoccomment"> * first.</em> -<a class="jxr_linenumber" name="341" href="#341">341</a> <em class="jxr_javadoccomment"> * @return Next row or null if none found.</em> -<a class="jxr_linenumber" name="342" href="#342">342</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="343" href="#343">343</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> getNextRow(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) { -<a class="jxr_linenumber" name="344" href="#344">344</a> <strong class="jxr_keyword">return</strong> getLowest(getNextRow(cell, <strong class="jxr_keyword">this</strong>.cellSet), getNextRow(cell, <strong class="jxr_keyword">this</strong>.snapshot)); -<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> <em class="jxr_comment">/*</em> -<a class="jxr_linenumber" name="348" href="#348">348</a> <em class="jxr_comment"> * @param a</em> -<a class="jxr_linenumber" name="349" href="#349">349</a> <em class="jxr_comment"> * @param b</em> -<a class="jxr_linenumber" name="350" href="#350">350</a> <em class="jxr_comment"> * @return Return lowest of a or b or null if both a and b are null</em> -<a class="jxr_linenumber" name="351" href="#351">351</a> <em class="jxr_comment"> */</em> -<a class="jxr_linenumber" name="352" href="#352">352</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> getLowest(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> a, <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> b) { -<a class="jxr_linenumber" name="353" href="#353">353</a> <strong class="jxr_keyword">if</strong> (a == <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="354" href="#354">354</a> <strong class="jxr_keyword">return</strong> b; -<a class="jxr_linenumber" name="355" href="#355">355</a> } -<a class="jxr_linenumber" name="356" href="#356">356</a> <strong class="jxr_keyword">if</strong> (b == <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="357" href="#357">357</a> <strong class="jxr_keyword">return</strong> a; -<a class="jxr_linenumber" name="358" href="#358">358</a> } -<a class="jxr_linenumber" name="359" href="#359">359</a> <strong class="jxr_keyword">return</strong> comparator.compareRows(a, b) <= 0? a: b; -<a class="jxr_linenumber" name="360" href="#360">360</a> } -<a class="jxr_linenumber" name="361" href="#361">361</a> -<a class="jxr_linenumber" name="362" href="#362">362</a> <em class="jxr_comment">/*</em> -<a class="jxr_linenumber" name="363" href="#363">363</a> <em class="jxr_comment"> * @param key Find row that follows this one. If null, return first.</em> -<a class="jxr_linenumber" name="364" href="#364">364</a> <em class="jxr_comment"> * @param map Set to look in for a row beyond <code>row</code>.</em> -<a class="jxr_linenumber" name="365" href="#365">365</a> <em class="jxr_comment"> * @return Next row or null if none found. If one found, will be a new</em> -<a class="jxr_linenumber" name="366" href="#366">366</a> <em class="jxr_comment"> * KeyValue -- can be destroyed by subsequent calls to this method.</em> -<a class="jxr_linenumber" name="367" href="#367">367</a> <em class="jxr_comment"> */</em> -<a class="jxr_linenumber" name="368" href="#368">368</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> getNextRow(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> key, -<a class="jxr_linenumber" name="369" href="#369">369</a> <strong class="jxr_keyword">final</strong> NavigableSet<Cell> set) { -<a class="jxr_linenumber" name="370" href="#370">370</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> result = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="371" href="#371">371</a> SortedSet<Cell> tail = key == <strong class="jxr_keyword">null</strong>? set: set.tailSet(key); -<a class="jxr_linenumber" name="372" href="#372">372</a> <em class="jxr_comment">// Iterate until we fall into the next row; i.e. move off current row</em> -<a class="jxr_linenumber" name="373" href="#373">373</a> <strong class="jxr_keyword">for</strong> (Cell cell: tail) { -<a class="jxr_linenumber" name="374" href="#374">374</a> <strong class="jxr_keyword">if</strong> (comparator.compareRows(cell, key) <= 0) -<a class="jxr_linenumber" name="375" href="#375">375</a> <strong class="jxr_keyword">continue</strong>; -<a class="jxr_linenumber" name="376" href="#376">376</a> <em class="jxr_comment">// Note: Not suppressing deletes or expired cells. Needs to be handled</em> -<a class="jxr_linenumber" name="377" href="#377">377</a> <em class="jxr_comment">// by higher up functions.</em> -<a class="jxr_linenumber" name="378" href="#378">378</a> result = cell; -<a class="jxr_linenumber" name="379" href="#379">379</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="380" href="#380">380</a> } -<a class="jxr_linenumber" name="381" href="#381">381</a> <strong class="jxr_keyword">return</strong> result; -<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> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="385" href="#385">385</a> <em class="jxr_javadoccomment"> * Only used by tests. TODO: Remove</em> -<a class="jxr_linenumber" name="386" href="#386">386</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="387" href="#387">387</a> <em class="jxr_javadoccomment"> * Given the specs of a column, update it, first by inserting a new record,</em> -<a class="jxr_linenumber" name="388" href="#388">388</a> <em class="jxr_javadoccomment"> * then removing the old one. Since there is only 1 KeyValue involved, the memstoreTS</em> -<a class="jxr_linenumber" name="389" href="#389">389</a> <em class="jxr_javadoccomment"> * will be set to 0, thus ensuring that they instantly appear to anyone. The underlying</em> -<a class="jxr_linenumber" name="390" href="#390">390</a> <em class="jxr_javadoccomment"> * store will ensure that the insert/delete each are atomic. A scanner/reader will either</em> -<a class="jxr_linenumber" name="391" href="#391">391</a> <em class="jxr_javadoccomment"> * get the new value, or the old value and all readers will eventually only see the new</em> -<a class="jxr_linenumber" name="392" href="#392">392</a> <em class="jxr_javadoccomment"> * value after the old was removed.</em> -<a class="jxr_linenumber" name="393" href="#393">393</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="394" href="#394">394</a> <em class="jxr_javadoccomment"> * @param row</em> -<a class="jxr_linenumber" name="395" href="#395">395</a> <em class="jxr_javadoccomment"> * @param family</em> -<a class="jxr_linenumber" name="396" href="#396">396</a> <em class="jxr_javadoccomment"> * @param qualifier</em> -<a class="jxr_linenumber" name="397" href="#397">397</a> <em class="jxr_javadoccomment"> * @param newValue</em> -<a class="jxr_linenumber" name="398" href="#398">398</a> <em class="jxr_javadoccomment"> * @param now</em> -<a class="jxr_linenumber" name="399" href="#399">399</a> <em class="jxr_javadoccomment"> * @return Timestamp</em> -<a class="jxr_linenumber" name="400" href="#400">400</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="401" href="#401">401</a> @Override -<a class="jxr_linenumber" name="402" href="#402">402</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> updateColumnValue(byte[] row, -<a class="jxr_linenumber" name="403" href="#403">403</a> byte[] family, -<a class="jxr_linenumber" name="404" href="#404">404</a> byte[] qualifier, -<a class="jxr_linenumber" name="405" href="#405">405</a> <strong class="jxr_keyword">long</strong> newValue, -<a class="jxr_linenumber" name="406" href="#406">406</a> <strong class="jxr_keyword">long</strong> now) { -<a class="jxr_linenumber" name="407" href="#407">407</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> firstCell = KeyValueUtil.createFirstOnRow(row, family, qualifier); -<a class="jxr_linenumber" name="408" href="#408">408</a> <em class="jxr_comment">// Is there a Cell in 'snapshot' with the same TS? If so, upgrade the timestamp a bit.</em> -<a class="jxr_linenumber" name="409" href="#409">409</a> SortedSet<Cell> snSs = snapshot.tailSet(firstCell); -<a class="jxr_linenumber" name="410" href="#410">410</a> <strong class="jxr_keyword">if</strong> (!snSs.isEmpty()) { -<a class="jxr_linenumber" name="411" href="#411">411</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> snc = snSs.first(); -<a class="jxr_linenumber" name="412" href="#412">412</a> <em class="jxr_comment">// is there a matching Cell in the snapshot?</em> -<a class="jxr_linenumber" name="413" href="#413">413</a> <strong class="jxr_keyword">if</strong> (CellUtil.matchingRow(snc, firstCell) && CellUtil.matchingQualifier(snc, firstCell)) { -<a class="jxr_linenumber" name="414" href="#414">414</a> <strong class="jxr_keyword">if</strong> (snc.getTimestamp() == now) { -<a class="jxr_linenumber" name="415" href="#415">415</a> <em class="jxr_comment">// poop,</em> -<a class="jxr_linenumber" name="416" href="#416">416</a> now += 1; -<a class="jxr_linenumber" name="417" href="#417">417</a> } -<a class="jxr_linenumber" name="418" href="#418">418</a> } -<a class="jxr_linenumber" name="419" href="#419">419</a> } -<a class="jxr_linenumber" name="420" href="#420">420</a> -<a class="jxr_linenumber" name="421" href="#421">421</a> <em class="jxr_comment">// logic here: the new ts MUST be at least 'now'. But it could be larger if necessary.</em> -<a class="jxr_linenumber" name="422" href="#422">422</a> <em class="jxr_comment">// But the timestamp should also be max(now, mostRecentTsInMemstore)</em> -<a class="jxr_linenumber" name="423" href="#423">423</a> -<a class="jxr_linenumber" name="424" href="#424">424</a> <em class="jxr_comment">// so we cant add the new Cell w/o knowing what's there already, but we also</em> -<a class="jxr_linenumber" name="425" href="#425">425</a> <em class="jxr_comment">// want to take this chance to delete some cells. So two loops (sad)</em> -<a class="jxr_linenumber" name="426" href="#426">426</a> -<a class="jxr_linenumber" name="427" href="#427">427</a> SortedSet<Cell> ss = cellSet.tailSet(firstCell); -<a class="jxr_linenumber" name="428" href="#428">428</a> <strong class="jxr_keyword">for</strong> (Cell cell : ss) { -<a class="jxr_linenumber" name="429" href="#429">429</a> <em class="jxr_comment">// if this isnt the row we are interested in, then bail:</em> -<a class="jxr_linenumber" name="430" href="#430">430</a> <strong class="jxr_keyword">if</strong> (!CellUtil.matchingColumn(cell, family, qualifier) -<a class="jxr_linenumber" name="431" href="#431">431</a> || !CellUtil.matchingRow(cell, firstCell)) { -<a class="jxr_linenumber" name="432" href="#432">432</a> <strong class="jxr_keyword">break</strong>; <em class="jxr_comment">// rows dont match, bail.</em> -<a class="jxr_linenumber" name="433" href="#433">433</a> } -<a class="jxr_linenumber" name="434" href="#434">434</a> -<a class="jxr_linenumber" name="435" href="#435">435</a> <em class="jxr_comment">// if the qualifier matches and it's a put, just RM it out of the cellSet.</em> -<a class="jxr_linenumber" name="436" href="#436">436</a> <strong class="jxr_keyword">if</strong> (cell.getTypeByte() == KeyValue.Type.Put.getCode() && -<a class="jxr_linenumber" name="437" href="#437">437</a> cell.getTimestamp() > now && CellUtil.matchingQualifier(firstCell, cell)) { -<a class="jxr_linenumber" name="438" href="#438">438</a> now = cell.getTimestamp(); -<a class="jxr_linenumber" name="439" href="#439">439</a> } -<a class="jxr_linenumber" name="440" href="#440">440</a> } -<a class="jxr_linenumber" name="441" href="#441">441</a> -<a class="jxr_linenumber" name="442" href="#442">442</a> <em class="jxr_comment">// create or update (upsert) a new Cell with</em> -<a class="jxr_linenumber" name="443" href="#443">443</a> <em class="jxr_comment">// 'now' and a 0 memstoreTS == immediately visible</em> -<a class="jxr_linenumber" name="444" href="#444">444</a> List<Cell> cells = <strong class="jxr_keyword">new</strong> ArrayList<Cell>(1); -<a class="jxr_linenumber" name="445" href="#445">445</a> cells.add(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/KeyValue.html">KeyValue</a>(row, family, qualifier, now, Bytes.toBytes(newValue))); -<a class="jxr_linenumber" name="446" href="#446">446</a> <strong class="jxr_keyword">return</strong> upsert(cells, 1L); -<a class="jxr_linenumber" name="447" href="#447">447</a> } -<a class="jxr_linenumber" name="448" href="#448">448</a> -<a class="jxr_linenumber" name="449" href="#449">449</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="450" href="#450">450</a> <em class="jxr_javadoccomment"> * Update or insert the specified KeyValues.</em> -<a class="jxr_linenumber" name="451" href="#451">451</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="452" href="#452">452</a> <em class="jxr_javadoccomment"> * For each KeyValue, insert into MemStore. This will atomically upsert the</em> -<a class="jxr_linenumber" name="453" href="#453">453</a> <em class="jxr_javadoccomment"> * value for that row/family/qualifier. If a KeyValue did already exist,</em> -<a class="jxr_linenumber" name="454" href="#454">454</a> <em class="jxr_javadoccomment"> * it will then be removed.</em> -<a class="jxr_linenumber" name="455" href="#455">455</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="456" href="#456">456</a> <em class="jxr_javadoccomment"> * Currently the memstoreTS is kept at 0 so as each insert happens, it will</em> -<a class="jxr_linenumber" name="457" href="#457">457</a> <em class="jxr_javadoccomment"> * be immediately visible. May want to change this so it is atomic across</em> -<a class="jxr_linenumber" name="458" href="#458">458</a> <em class="jxr_javadoccomment"> * all KeyValues.</em> -<a class="jxr_linenumber" name="459" href="#459">459</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="460" href="#460">460</a> <em class="jxr_javadoccomment"> * This is called under row lock, so Get operations will still see updates</em> -<a class="jxr_linenumber" name="461" href="#461">461</a> <em class="jxr_javadoccomment"> * atomically. Scans will only see each KeyValue update as atomic.</em> -<a class="jxr_linenumber" name="462" href="#462">462</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="463" href="#463">463</a> <em class="jxr_javadoccomment"> * @param cells</em> -<a class="jxr_linenumber" name="464" href="#464">464</a> <em class="jxr_javadoccomment"> * @param readpoint readpoint below which we can safely remove duplicate KVs</em> -<a class="jxr_linenumber" name="465" href="#465">465</a> <em class="jxr_javadoccomment"> * @return change in memstore size</em> -<a class="jxr_linenumber" name="466" href="#466">466</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="467" href="#467">467</a> @Override -<a class="jxr_linenumber" name="468" href="#468">468</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> upsert(Iterable<Cell> cells, <strong class="jxr_keyword">long</strong> readpoint) { -<a class="jxr_linenumber" name="469" href="#469">469</a> <strong class="jxr_keyword">long</strong> size = 0; -<a class="jxr_linenumber" name="470" href="#470">470</a> <strong class="jxr_keyword">for</strong> (Cell cell : cells) { -<a class="jxr_linenumber" name="471" href="#471">471</a> size += upsert(cell, readpoint); -<a class="jxr_linenumber" name="472" href="#472">472</a> } -<a class="jxr_linenumber" name="473" href="#473">473</a> <strong class="jxr_keyword">return</strong> size; -<a class="jxr_linenumber" name="474" href="#474">474</a> } -<a class="jxr_linenumber" name="475" href="#475">475</a> -<a class="jxr_linenumber" name="476" href="#476">476</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="477" href="#477">477</a> <em class="jxr_javadoccomment"> * Inserts the specified KeyValue into MemStore and deletes any existing</em> -<a class="jxr_linenumber" name="478" href="#478">478</a> <em class="jxr_javadoccomment"> * versions of the same row/family/qualifier as the specified KeyValue.</em> -<a class="jxr_linenumber" name="479" href="#479">479</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="480" href="#480">480</a> <em class="jxr_javadoccomment"> * First, the specified KeyValue is inserted into the Memstore.</em> -<a class="jxr_linenumber" name="481" href="#481">481</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="482" href="#482">482</a> <em class="jxr_javadoccomment"> * If there are any existing KeyValues in this MemStore with the same row,</em> -<a class="jxr_linenumber" name="483" href="#483">483</a> <em class="jxr_javadoccomment"> * family, and qualifier, they are removed.</em> -<a class="jxr_linenumber" name="484" href="#484">484</a> <em class="jxr_javadoccomment"> * <p></em> -<a class="jxr_linenumber" name="485" href="#485">485</a> <em class="jxr_javadoccomment"> * Callers must hold the read lock.</em> -<a class="jxr_linenumber" name="486" href="#486">486</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="487" href="#487">487</a> <em class="jxr_javadoccomment"> * @param cell</em> -<a class="jxr_linenumber" name="488" href="#488">488</a> <em class="jxr_javadoccomment"> * @return change in size of MemStore</em> -<a class="jxr_linenumber" name="489" href="#489">489</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="490" href="#490">490</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> upsert(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell, <strong class="jxr_keyword">long</strong> readpoint) { -<a class="jxr_linenumber" name="491" href="#491">491</a> <em class="jxr_comment">// Add the Cell to the MemStore</em> -<a class="jxr_linenumber" name="492" href="#492">492</a> <em class="jxr_comment">// Use the internalAdd method here since we (a) already have a lock</em> -<a class="jxr_linenumber" name="493" href="#493">493</a> <em class="jxr_comment">// and (b) cannot safely use the MSLAB here without potentially</em> -<a class="jxr_linenumber" name="494" href="#494">494</a> <em class="jxr_comment">// hitting OOME - see TestMemStore.testUpsertMSLAB for a</em> -<a class="jxr_linenumber" name="495" href="#495">495</a> <em class="jxr_comment">// test that triggers the pathological case if we don't avoid MSLAB</em> -<a class="jxr_linenumber" name="496" href="#496">496</a> <em class="jxr_comment">// here.</em> -<a class="jxr_linenumber" name="497" href="#497">497</a> <strong class="jxr_keyword">long</strong> addedSize = internalAdd(cell); -<a class="jxr_linenumber" name="498" href="#498">498</a> -<a class="jxr_linenumber" name="499" href="#499">499</a> <em class="jxr_comment">// Get the Cells for the row/family/qualifier regardless of timestamp.</em> -<a class="jxr_linenumber" name="500" href="#500">500</a> <em class="jxr_comment">// For this case we want to clean up any other puts</em> -<a class="jxr_linenumber" name="501" href="#501">501</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> firstCell = KeyValueUtil.createFirstOnRow( -<a class="jxr_linenumber" name="502" href="#502">502</a> cell.getRowArray(), cell.getRowOffset(), cell.getRowLength(), -<a class="jxr_linenumber" name="503" href="#503">503</a> cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength(), -<a class="jxr_linenumber" name="504" href="#504">504</a> cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength()); -<a class="jxr_linenumber" name="505" href="#505">505</a> SortedSet<Cell> ss = cellSet.tailSet(firstCell); -<a class="jxr_linenumber" name="506" href="#506">506</a> Iterator<Cell> it = ss.iterator(); -<a class="jxr_linenumber" name="507" href="#507">507</a> <em class="jxr_comment">// versions visible to oldest scanner</em> -<a class="jxr_linenumber" name="508" href="#508">508</a> <strong class="jxr_keyword">int</strong> versionsVisible = 0; -<a class="jxr_linenumber" name="509" href="#509">509</a> <strong class="jxr_keyword">while</strong> ( it.hasNext() ) { -<a class="jxr_linenumber" name="510" href="#510">510</a> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cur = it.next(); -<a class="jxr_linenumber" name="511" href="#511">511</a> -<a class="jxr_linenumber" name="512" href="#512">512</a> <strong class="jxr_keyword">if</strong> (cell == cur) { -<a class="jxr_linenumber" name="513" href="#513">513</a> <em class="jxr_comment">// ignore the one just put in</em> -<a class="jxr_linenumber" name="514" href="#514">514</a> <strong class="jxr_keyword">continue</strong>; -<a class="jxr_linenumber" name="515" href="#515">515</a> } -<a class="jxr_linenumber" name="516" href="#516">516</a> <em class="jxr_comment">// check that this is the row and column we are interested in, otherwise bail</em> -<a class="jxr_linenumber" name="517" href="#517">517</a> <strong class="jxr_keyword">if</strong> (CellUtil.matchingRow(cell, cur) && CellUtil.matchingQualifier(cell, cur)) { -<a class="jxr_linenumber" name="518" href="#518">518</a> <em class="jxr_comment">// only remove Puts that concurrent scanners cannot possibly see</em> -<a class="jxr_linenumber" name="519" href="#519">519</a> <strong class="jxr_keyword">if</strong> (cur.getTypeByte() == KeyValue.Type.Put.getCode() && -<a class="jxr_linenumber" name="520" href="#520">520</a> cur.getSequenceId() <= readpoint) { -<a class="jxr_linenumber" name="521" href="#521">521</a> <strong class="jxr_keyword">if</strong> (versionsVisible >= 1) { -<a class="jxr_linenumber" name="522" href="#522">522</a> <em class="jxr_comment">// if we get here we have seen at least one version visible to the oldest scanner,</em> -<a class="jxr_linenumber" name="523" href="#523">523</a> <em class="jxr_comment">// which means we can prove that no scanner will see this version</em> -<a class="jxr_linenumber" name="524" href="#524">524</a> -<a class="jxr_linenumber" name="525" href="#525">525</a> <em class="jxr_comment">// false means there was a change, so give us the size.</em> -<a class="jxr_linenumber" name="526" href="#526">526</a> <strong class="jxr_keyword">long</strong> delta = heapSizeChange(cur, <strong class="jxr_keyword">true</strong>); -<a class="jxr_linenumber" name="527" href="#527">527</a> addedSize -= delta; -<a class="jxr_linenumber" name="528" href="#528">528</a> <strong class="jxr_keyword">this</strong>.size.addAndGet(-delta); -<a class="jxr_linenumber" name="529" href="#529">529</a> it.remove(); -<a class="jxr_linenumber" name="530" href="#530">530</a> setOldestEditTimeToNow(); -<a class="jxr_linenumber" name="531" href="#531">531</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="532" href="#532">532</a> versionsVisible++; -<a class="jxr_linenumber" name="533" href="#533">533</a> } -<a class="jxr_linenumber" name="534" href="#534">534</a> } -<a class="jxr_linenumber" name="535" href="#535">535</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="536" href="#536">536</a> <em class="jxr_comment">// past the row or column, done</em> -<a class="jxr_linenumber" name="537" href="#537">537</a> <strong class="jxr_keyword">break</strong>; -<a class="jxr_linenumber" name="538" href="#538">538</a> } -<a class="jxr_linenumber" name="539" href="#539">539</a> } -<a class="jxr_linenumber" name="540" href="#540">540</a> <strong class="jxr_keyword">return</strong> addedSize; -<a class="jxr_linenumber" name="541" href="#541">541</a> } -<a class="jxr_linenumber" name="542" href="#542">542</a> -<a class="jxr_linenumber" name="543" href="#543">543</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="544" href="#544">544</a> <em class="jxr_javadoccomment"> * @return scanner on memstore and snapshot in this order.</em> -<a class="jxr_linenumber" name="545" href="#545">545</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="546" href="#546">546</a> @Override -<a class="jxr_linenumber" name="547" href="#547">547</a> <strong class="jxr_keyword">public</strong> List<KeyValueScanner> getScanners(<strong class="jxr_keyword">long</strong> readPt) { -<a class="jxr_linenumber" name="548" href="#548">548</a> <strong class="jxr_keyword">return</strong> Collections.<KeyValueScanner> singletonList(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">MemStoreScanner</a>(readPt)); -<a class="jxr_linenumber" name="549" href="#549">549</a> } -<a class="jxr_linenumber" name="550" href="#550">550</a> -<a class="jxr_linenumber" name="551" href="#551">551</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="552" href="#552">552</a> <em class="jxr_javadoccomment"> * Check if this memstore may contain the required keys</em> -<a class="jxr_linenumber" name="553" href="#553">553</a> <em class="jxr_javadoccomment"> * @param scan</em> -<a class="jxr_linenumber" name="554" href="#554">554</a> <em class="jxr_javadoccomment"> * @return False if the key definitely does not exist in this Memstore</em> -<a class="jxr_linenumber" name="555" href="#555">555</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="556" href="#556">556</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> shouldSeek(<a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan, <strong class="jxr_keyword">long</strong> oldestUnexpiredTS) { -<a class="jxr_linenumber" name="557" href="#557">557</a> <strong class="jxr_keyword">return</strong> (timeRangeTracker.includesTimeRange(scan.getTimeRange()) || -<a class="jxr_linenumber" name="558" href="#558">558</a> snapshotTimeRangeTracker.includesTimeRange(scan.getTimeRange())) -<a class="jxr_linenumber" name="559" href="#559">559</a> && (Math.max(timeRangeTracker.getMaximumTimestamp(), -<a class="jxr_linenumber" name="560" href="#560">560</a> snapshotTimeRangeTracker.getMaximumTimestamp()) >= -<a class="jxr_linenumber" name="561" href="#561">561</a> oldestUnexpiredTS); -<a class="jxr_linenumber" name="562" href="#562">562</a> } -<a class="jxr_linenumber" name="563" href="#563">563</a> -<a class="jxr_linenumber" name="564" href="#564">564</a> <em class="jxr_comment">/*</em> -<a class="jxr_linenumber" name="565" href="#565">565</a> <em class="jxr_comment"> * MemStoreScanner implements the KeyValueScanner.</em> -<a class="jxr_linenumber" name="566" href="#566">566</a> <em class="jxr_comment"> * It lets the caller scan the contents of a memstore -- both current</em> -<a class="jxr_linenumber" name="567" href="#567">567</a> <em class="jxr_comment"> * map and snapshot.</em> -<a class="jxr_linenumber" name="568" href="#568">568</a> <em class="jxr_comment"> * This behaves as if it were a real scanner but does not maintain position.</em> -<a class="jxr_linenumber" name="569" href="#569">569</a> <em class="jxr_comment"> */</em> -<a class="jxr_linenumber" name="570" href="#570">570</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">MemStoreScanner</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/NonLazyKeyValueScanner.html">NonLazyKeyValueScanner</a> { -<a class="jxr_linenumber" name="571" href="#571">571</a> <em class="jxr_comment">// Next row information for either cellSet or snapshot</em> -<a class="jxr_linenumber" name="572" href="#572">572</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cellSetNextRow = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="573" href="#573">573</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> snapshotNextRow = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="574" href="#574">574</a> -<a class="jxr_linenumber" name="575" href="#575">575</a> <em class="jxr_comment">// last iterated Cells for cellSet and snapshot (to restore iterator state after reseek)</em> -<a class="jxr_linenumber" name="576" href="#576">576</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cellSetItRow = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="577" href="#577">577</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> snapshotItRow = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="578" href="#578">578</a> -<a class="jxr_linenumber" name="579" href="#579">579</a> <em class="jxr_comment">// iterator based scanning.</em> -<a class="jxr_linenumber" name="580" href="#580">580</a> <strong class="jxr_keyword">private</strong> Iterator<Cell> cellSetIt; -<a class="jxr_linenumber" name="581" href="#581">581</a> <strong class="jxr_keyword">private</strong> Iterator<Cell> snapshotIt; +<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.TimeRange; +<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.ByteRange; +<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; +<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.ClassSize; +<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.CollectionBackedScanner; +<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> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.ReflectionUtils; +<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> org.apache.htrace.Trace; +<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"> * The MemStore holds in-memory modifications to the Store. Modifications</em> +<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * are {@link Cell}s. When asked to flush, current memstore is moved</em> +<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * to snapshot and is cleared. We continue to serve edits out of new memstore</em> +<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * and backing snapshot until flusher reports in that the flush succeeded. At</em> +<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * this point we let the snapshot go.</em> +<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * <p></em> +<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * The MemStore functions should not be called in parallel. Callers should hold</em> +<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * write and read locks. This is done in {@link HStore}.</em> +<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * </p></em> +<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * TODO: Adjust size of the memstore when we remove items because they have</em> +<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * been deleted.</em> +<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * TODO: With new KVSLS, need to make sure we update HeapSize with difference</em> +<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * in KV size.</em> +<a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="68" href="#68">68</a> @InterfaceAudience.Private +<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStore.html">MemStore</a> { +<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(DefaultMemStore.<strong class="jxr_keyword">class</strong>); +<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String USEMSLAB_KEY = <span class="jxr_string">"hbase.hregion.memstore.mslab.enabled"</span>; +<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> USEMSLAB_DEFAULT = <strong class="jxr_keyword">true</strong>; +<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MSLAB_CLASS_NAME = <span class="jxr_string">"hbase.regionserver.mslab.class"</span>; +<a class="jxr_linenumber" name="74" href="#74">74</a> +<a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">private</strong> Configuration conf; +<a class="jxr_linenumber" name="76" href="#76">76</a> +<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_comment">// MemStore. Use a CellSkipListSet rather than SkipListSet because of the</em> +<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_comment">// better semantics. The Map will overwrite if passed a key it already had</em> +<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_comment">// whereas the Set will not add new Cell if key is same though value might be</em> +<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_comment">// different. Value is not important -- just make sure always same</em> +<a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_comment">// reference passed.</em> +<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a> cellSet; +<a class="jxr_linenumber" name="83" href="#83">83</a> +<a class="jxr_linenumber" name="84" href="#84">84</a> <em class="jxr_comment">// Snapshot of memstore. Made for flusher.</em> +<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a> snapshot; +<a class="jxr_linenumber" name="86" href="#86">86</a> +<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html">CellComparator</a> comparator; +<a class="jxr_linenumber" name="88" href="#88">88</a> +<a class="jxr_linenumber" name="89" href="#89">89</a> <em class="jxr_comment">// Used to track own heapSize</em> +<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">final</strong> AtomicLong size; +<a class="jxr_linenumber" name="91" href="#91">91</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> snapshotSize; +<a class="jxr_linenumber" name="92" href="#92">92</a> +<a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_comment">// Used to track when to flush</em> +<a class="jxr_linenumber" name="94" href="#94">94</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> timeOfOldestEdit = Long.MAX_VALUE; +<a class="jxr_linenumber" name="95" href="#95">95</a> +<a class="jxr_linenumber" name="96" href="#96">96</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a> timeRangeTracker; +<a class="jxr_linenumber" name="97" href="#97">97</a> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a> snapshotTimeRangeTracker; +<a class="jxr_linenumber" name="98" href="#98">98</a> +<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html">MemStoreLAB</a> allocator; +<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html">MemStoreLAB</a> snapshotAllocator; +<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">long</strong> snapshotId; +<a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> tagsPresent; +<a class="jxr_linenumber" name="103" href="#103">103</a> +<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> * Default constructor. Used for tests.</em> +<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a>() { +<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">this</strong>(HBaseConfiguration.create(), CellComparator.COMPARATOR); +<a class="jxr_linenumber" name="109" href="#109">109</a> } +<a class="jxr_linenumber" name="110" href="#110">110</a> +<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> <em class="jxr_javadoccomment"> * Constructor.</em> +<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment"> * @param c Comparator</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> <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultMemStore.html">DefaultMemStore</a>(<strong class="jxr_keyword">final</strong> Configuration conf, +<a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html">CellComparator</a> c) { +<a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">this</strong>.conf = conf; +<a class="jxr_linenumber" name="118" href="#118">118</a> <strong class="jxr_keyword">this</strong>.comparator = c; +<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">this</strong>.cellSet = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(c); +<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">this</strong>.snapshot = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSkipListSet.html">CellSkipListSet</a>(c); +<a class="jxr_linenumber" name="121" href="#121">121</a> timeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); +<a class="jxr_linenumber" name="122" href="#122">122</a> snapshotTimeRangeTracker = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html">TimeRangeTracker</a>(); +<a class="jxr_linenumber" name="123" href="#123">123</a> <strong class="jxr_keyword">this</strong>.size = <strong class="jxr_keyword">new</strong> AtomicLong(DEEP_OVERHEAD); +<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">this</strong>.snapshotSize = 0; +<a class="jxr_linenumber" name="125" href="#125">125</a> <strong class="jxr_keyword">if</strong> (conf.getBoolean(USEMSLAB_KEY, USEMSLAB_DEFAULT)) { +<a class="jxr_linenumber" name="126" href="#126">126</a> String className = conf.get(MSLAB_CLASS_NAME, HeapMemStoreLAB.<strong class="jxr_keyword">class</strong>.getName()); +<a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">this</strong>.allocator = ReflectionUtils.instantiateWithCustomCtor(className, +<a class="jxr_linenumber" name="128" href="#128">128</a> <strong class="jxr_keyword">new</strong> Class[] { Configuration.<strong class="jxr_keyword">class</strong> }, <strong class="jxr_keyword">new</strong> Object[] { conf }); +<a class="jxr_linenumber" name="129" href="#129">129</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">this</strong>.allocator = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="131" href="#131">131</a> } +<a class="jxr_linenumber" name="132" href="#132">132</a> } +<a class="jxr_linenumber" name="133" href="#133">133</a> +<a class="jxr_linenumber" name="134" href="#134">134</a> <strong class="jxr_keyword">void</strong> dump() { +<a class="jxr_linenumber" name="135" href="#135">135</a> <strong class="jxr_keyword">for</strong> (Cell cell: <strong class="jxr_keyword">this</strong>.cellSet) { +<a class="jxr_linenumber" name="136" href="#136">136</a> LOG.info(cell); +<a class="jxr_linenumber" name="137" href="#137">137</a> } +<a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">for</strong> (Cell cell: <strong class="jxr_keyword">this</strong>.snapshot) { +<a class="jxr_linenumber" name="139" href="#139">139</a> LOG.info(cell); +<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> +<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment"> * Creates a snapshot of the current memstore.</em> +<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment"> * Snapshot must be cleared by call to {@link #clearSnapshot(long)}</em> +<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="147" href="#147">147</a> @Override +<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSnapshot.html">MemStoreSnapshot</a> snapshot() { +<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_comment">// If snapshot currently has entries, then flusher failed or didn't call</em> +<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_comment">// cleanup. Log a warning.</em> +<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">if</strong> (!<strong class="jxr_keyword">this</strong>.snapshot.isEmpty()) { +<a class="jxr_linenumber" name="152" href="#152">152</a> LOG.warn(<span class="jxr_string">"Snapshot called again without clearing previous. "</span> + +<a class="jxr_linenumber" name="153" href="#153">153</a> <span class="jxr_string">"Doing nothing. Another ongoing flush or did we fail last attempt?"</span>); +<a class="jxr_linenumber" name="154" href="#154">154</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="155" href="#155">155</a> <strong class="jxr_keyword">this</strong>.snapshotId = EnvironmentEdgeManager.currentTime(); +<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">this</strong>.snapshotSize = keySize(); +<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">if</stron
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