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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.regionserver;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.util.Collections;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.Iterator;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.List;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Objects;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.SortedSet;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.atomic.AtomicReference;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.locks.ReentrantReadWriteLock;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.Cell;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.CellComparator;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.io.TimeRange;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.ClassSize;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.slf4j.Logger;</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37">/**</span> |
| <span class="source-line-no">038</span><span id="line-38"> * This is an abstraction of a segment maintained in a memstore, e.g., the active cell set or its</span> |
| <span class="source-line-no">039</span><span id="line-39"> * snapshot. This abstraction facilitates the management of the compaction pipeline and the shifts</span> |
| <span class="source-line-no">040</span><span id="line-40"> * of these segments from active set to snapshot set in the default implementation.</span> |
| <span class="source-line-no">041</span><span id="line-41"> */</span> |
| <span class="source-line-no">042</span><span id="line-42">@InterfaceAudience.Private</span> |
| <span class="source-line-no">043</span><span id="line-43">public abstract class Segment implements MemStoreSizing {</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> public final static long FIXED_OVERHEAD =</span> |
| <span class="source-line-no">046</span><span id="line-46"> ClassSize.align(ClassSize.OBJECT + 6 * ClassSize.REFERENCE // cellSet, comparator, updatesLock,</span> |
| <span class="source-line-no">047</span><span id="line-47"> // memStoreLAB, memStoreSizing,</span> |
| <span class="source-line-no">048</span><span id="line-48"> // and timeRangeTracker</span> |
| <span class="source-line-no">049</span><span id="line-49"> + Bytes.SIZEOF_LONG // minSequenceId</span> |
| <span class="source-line-no">050</span><span id="line-50"> + Bytes.SIZEOF_BOOLEAN); // tagsPresent</span> |
| <span class="source-line-no">051</span><span id="line-51"> public final static long DEEP_OVERHEAD = FIXED_OVERHEAD + ClassSize.ATOMIC_REFERENCE</span> |
| <span class="source-line-no">052</span><span id="line-52"> + ClassSize.CELL_SET + 2 * ClassSize.ATOMIC_LONG + ClassSize.REENTRANT_LOCK;</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> private AtomicReference<CellSet<ExtendedCell>> cellSet = new AtomicReference<>();</span> |
| <span class="source-line-no">055</span><span id="line-55"> private final CellComparator comparator;</span> |
| <span class="source-line-no">056</span><span id="line-56"> private ReentrantReadWriteLock updatesLock;</span> |
| <span class="source-line-no">057</span><span id="line-57"> protected long minSequenceId;</span> |
| <span class="source-line-no">058</span><span id="line-58"> private MemStoreLAB memStoreLAB;</span> |
| <span class="source-line-no">059</span><span id="line-59"> // Sum of sizes of all Cells added to this Segment. Cell's HeapSize is considered. This is not</span> |
| <span class="source-line-no">060</span><span id="line-60"> // including the heap overhead of this class.</span> |
| <span class="source-line-no">061</span><span id="line-61"> protected final MemStoreSizing memStoreSizing;</span> |
| <span class="source-line-no">062</span><span id="line-62"> protected final TimeRangeTracker timeRangeTracker;</span> |
| <span class="source-line-no">063</span><span id="line-63"> protected volatile boolean tagsPresent;</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> // Empty constructor to be used when Segment is used as interface,</span> |
| <span class="source-line-no">066</span><span id="line-66"> // and there is no need in true Segments state</span> |
| <span class="source-line-no">067</span><span id="line-67"> protected Segment(CellComparator comparator, TimeRangeTracker trt) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> this.comparator = comparator;</span> |
| <span class="source-line-no">069</span><span id="line-69"> // Do we need to be thread safe always? What if ImmutableSegment?</span> |
| <span class="source-line-no">070</span><span id="line-70"> // DITTO for the TimeRangeTracker below.</span> |
| <span class="source-line-no">071</span><span id="line-71"> this.memStoreSizing = new ThreadSafeMemStoreSizing();</span> |
| <span class="source-line-no">072</span><span id="line-72"> this.timeRangeTracker = trt;</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> protected Segment(CellComparator comparator, List<ImmutableSegment> segments,</span> |
| <span class="source-line-no">076</span><span id="line-76"> TimeRangeTracker trt) {</span> |
| <span class="source-line-no">077</span><span id="line-77"> long dataSize = 0;</span> |
| <span class="source-line-no">078</span><span id="line-78"> long heapSize = 0;</span> |
| <span class="source-line-no">079</span><span id="line-79"> long OffHeapSize = 0;</span> |
| <span class="source-line-no">080</span><span id="line-80"> int cellsCount = 0;</span> |
| <span class="source-line-no">081</span><span id="line-81"> for (Segment segment : segments) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> MemStoreSize memStoreSize = segment.getMemStoreSize();</span> |
| <span class="source-line-no">083</span><span id="line-83"> dataSize += memStoreSize.getDataSize();</span> |
| <span class="source-line-no">084</span><span id="line-84"> heapSize += memStoreSize.getHeapSize();</span> |
| <span class="source-line-no">085</span><span id="line-85"> OffHeapSize += memStoreSize.getOffHeapSize();</span> |
| <span class="source-line-no">086</span><span id="line-86"> cellsCount += memStoreSize.getCellsCount();</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88"> this.comparator = comparator;</span> |
| <span class="source-line-no">089</span><span id="line-89"> this.updatesLock = new ReentrantReadWriteLock();</span> |
| <span class="source-line-no">090</span><span id="line-90"> // Do we need to be thread safe always? What if ImmutableSegment?</span> |
| <span class="source-line-no">091</span><span id="line-91"> // DITTO for the TimeRangeTracker below.</span> |
| <span class="source-line-no">092</span><span id="line-92"> this.memStoreSizing = new ThreadSafeMemStoreSizing(dataSize, heapSize, OffHeapSize, cellsCount);</span> |
| <span class="source-line-no">093</span><span id="line-93"> this.timeRangeTracker = trt;</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> // This constructor is used to create empty Segments.</span> |
| <span class="source-line-no">097</span><span id="line-97"> protected Segment(CellSet<ExtendedCell> cellSet, CellComparator comparator,</span> |
| <span class="source-line-no">098</span><span id="line-98"> MemStoreLAB memStoreLAB, TimeRangeTracker trt) {</span> |
| <span class="source-line-no">099</span><span id="line-99"> this.cellSet.set(cellSet);</span> |
| <span class="source-line-no">100</span><span id="line-100"> this.comparator = comparator;</span> |
| <span class="source-line-no">101</span><span id="line-101"> this.updatesLock = new ReentrantReadWriteLock();</span> |
| <span class="source-line-no">102</span><span id="line-102"> this.minSequenceId = Long.MAX_VALUE;</span> |
| <span class="source-line-no">103</span><span id="line-103"> this.memStoreLAB = memStoreLAB;</span> |
| <span class="source-line-no">104</span><span id="line-104"> // Do we need to be thread safe always? What if ImmutableSegment?</span> |
| <span class="source-line-no">105</span><span id="line-105"> // DITTO for the TimeRangeTracker below.</span> |
| <span class="source-line-no">106</span><span id="line-106"> this.memStoreSizing = new ThreadSafeMemStoreSizing();</span> |
| <span class="source-line-no">107</span><span id="line-107"> this.tagsPresent = false;</span> |
| <span class="source-line-no">108</span><span id="line-108"> this.timeRangeTracker = trt;</span> |
| <span class="source-line-no">109</span><span id="line-109"> }</span> |
| <span class="source-line-no">110</span><span id="line-110"></span> |
| <span class="source-line-no">111</span><span id="line-111"> protected Segment(Segment segment) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> this.cellSet.set(segment.getCellSet());</span> |
| <span class="source-line-no">113</span><span id="line-113"> this.comparator = segment.getComparator();</span> |
| <span class="source-line-no">114</span><span id="line-114"> this.updatesLock = segment.getUpdatesLock();</span> |
| <span class="source-line-no">115</span><span id="line-115"> this.minSequenceId = segment.getMinSequenceId();</span> |
| <span class="source-line-no">116</span><span id="line-116"> this.memStoreLAB = segment.getMemStoreLAB();</span> |
| <span class="source-line-no">117</span><span id="line-117"> this.memStoreSizing = segment.memStoreSizing;</span> |
| <span class="source-line-no">118</span><span id="line-118"> this.tagsPresent = segment.isTagsPresent();</span> |
| <span class="source-line-no">119</span><span id="line-119"> this.timeRangeTracker = segment.getTimeRangeTracker();</span> |
| <span class="source-line-no">120</span><span id="line-120"> }</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> /**</span> |
| <span class="source-line-no">123</span><span id="line-123"> * Creates the scanner for the given read point</span> |
| <span class="source-line-no">124</span><span id="line-124"> * @return a scanner for the given read point</span> |
| <span class="source-line-no">125</span><span id="line-125"> */</span> |
| <span class="source-line-no">126</span><span id="line-126"> protected KeyValueScanner getScanner(long readPoint) {</span> |
| <span class="source-line-no">127</span><span id="line-127"> return new SegmentScanner(this, readPoint);</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> public List<KeyValueScanner> getScanners(long readPoint) {</span> |
| <span class="source-line-no">131</span><span id="line-131"> return Collections.singletonList(new SegmentScanner(this, readPoint));</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> /** Returns whether the segment has any cells */</span> |
| <span class="source-line-no">135</span><span id="line-135"> public boolean isEmpty() {</span> |
| <span class="source-line-no">136</span><span id="line-136"> return getCellSet().isEmpty();</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"></span> |
| <span class="source-line-no">139</span><span id="line-139"> /**</span> |
| <span class="source-line-no">140</span><span id="line-140"> * Closing a segment before it is being discarded</span> |
| <span class="source-line-no">141</span><span id="line-141"> */</span> |
| <span class="source-line-no">142</span><span id="line-142"> public void close() {</span> |
| <span class="source-line-no">143</span><span id="line-143"> if (this.memStoreLAB != null) {</span> |
| <span class="source-line-no">144</span><span id="line-144"> this.memStoreLAB.close();</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"> // do not set MSLab to null as scanners may still be reading the data here and need to decrease</span> |
| <span class="source-line-no">147</span><span id="line-147"> // the counter when they finish</span> |
| <span class="source-line-no">148</span><span id="line-148"> }</span> |
| <span class="source-line-no">149</span><span id="line-149"></span> |
| <span class="source-line-no">150</span><span id="line-150"> /**</span> |
| <span class="source-line-no">151</span><span id="line-151"> * If the segment has a memory allocator the cell is being cloned to this space, and returned;</span> |
| <span class="source-line-no">152</span><span id="line-152"> * otherwise the given cell is returned When a cell's size is too big (bigger than maxAlloc), it</span> |
| <span class="source-line-no">153</span><span id="line-153"> * is not allocated on MSLAB. Since the process of flattening to CellChunkMap assumes that all</span> |
| <span class="source-line-no">154</span><span id="line-154"> * cells are allocated on MSLAB, during this process, the input parameter forceCloneOfBigCell is</span> |
| <span class="source-line-no">155</span><span id="line-155"> * set to 'true' and the cell is copied into MSLAB.</span> |
| <span class="source-line-no">156</span><span id="line-156"> * @return either the given cell or its clone</span> |
| <span class="source-line-no">157</span><span id="line-157"> */</span> |
| <span class="source-line-no">158</span><span id="line-158"> public ExtendedCell maybeCloneWithAllocator(ExtendedCell cell, boolean forceCloneOfBigCell) {</span> |
| <span class="source-line-no">159</span><span id="line-159"> if (this.memStoreLAB == null) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> return cell;</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> ExtendedCell cellFromMslab;</span> |
| <span class="source-line-no">164</span><span id="line-164"> if (forceCloneOfBigCell) {</span> |
| <span class="source-line-no">165</span><span id="line-165"> cellFromMslab = this.memStoreLAB.forceCopyOfBigCellInto(cell);</span> |
| <span class="source-line-no">166</span><span id="line-166"> } else {</span> |
| <span class="source-line-no">167</span><span id="line-167"> cellFromMslab = this.memStoreLAB.copyCellInto(cell);</span> |
| <span class="source-line-no">168</span><span id="line-168"> }</span> |
| <span class="source-line-no">169</span><span id="line-169"> return (cellFromMslab != null) ? cellFromMslab : cell;</span> |
| <span class="source-line-no">170</span><span id="line-170"> }</span> |
| <span class="source-line-no">171</span><span id="line-171"></span> |
| <span class="source-line-no">172</span><span id="line-172"> /**</span> |
| <span class="source-line-no">173</span><span id="line-173"> * Get cell length after serialized in {@link KeyValue}</span> |
| <span class="source-line-no">174</span><span id="line-174"> */</span> |
| <span class="source-line-no">175</span><span id="line-175"> static int getCellLength(Cell cell) {</span> |
| <span class="source-line-no">176</span><span id="line-176"> return cell.getSerializedSize();</span> |
| <span class="source-line-no">177</span><span id="line-177"> }</span> |
| <span class="source-line-no">178</span><span id="line-178"></span> |
| <span class="source-line-no">179</span><span id="line-179"> public boolean shouldSeek(TimeRange tr, long oldestUnexpiredTS) {</span> |
| <span class="source-line-no">180</span><span id="line-180"> return !isEmpty() && (tr.isAllTime() || timeRangeTracker.includesTimeRange(tr))</span> |
| <span class="source-line-no">181</span><span id="line-181"> && timeRangeTracker.getMax() >= oldestUnexpiredTS;</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"></span> |
| <span class="source-line-no">184</span><span id="line-184"> public boolean isTagsPresent() {</span> |
| <span class="source-line-no">185</span><span id="line-185"> return tagsPresent;</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"></span> |
| <span class="source-line-no">188</span><span id="line-188"> public void incScannerCount() {</span> |
| <span class="source-line-no">189</span><span id="line-189"> if (this.memStoreLAB != null) {</span> |
| <span class="source-line-no">190</span><span id="line-190"> this.memStoreLAB.incScannerCount();</span> |
| <span class="source-line-no">191</span><span id="line-191"> }</span> |
| <span class="source-line-no">192</span><span id="line-192"> }</span> |
| <span class="source-line-no">193</span><span id="line-193"></span> |
| <span class="source-line-no">194</span><span id="line-194"> public void decScannerCount() {</span> |
| <span class="source-line-no">195</span><span id="line-195"> if (this.memStoreLAB != null) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> this.memStoreLAB.decScannerCount();</span> |
| <span class="source-line-no">197</span><span id="line-197"> }</span> |
| <span class="source-line-no">198</span><span id="line-198"> }</span> |
| <span class="source-line-no">199</span><span id="line-199"></span> |
| <span class="source-line-no">200</span><span id="line-200"> /**</span> |
| <span class="source-line-no">201</span><span id="line-201"> * Setting the CellSet of the segment - used only for flat immutable segment for setting immutable</span> |
| <span class="source-line-no">202</span><span id="line-202"> * CellSet after its creation in immutable segment constructor</span> |
| <span class="source-line-no">203</span><span id="line-203"> * @return this object</span> |
| <span class="source-line-no">204</span><span id="line-204"> */</span> |
| <span class="source-line-no">205</span><span id="line-205"></span> |
| <span class="source-line-no">206</span><span id="line-206"> protected Segment setCellSet(CellSet<ExtendedCell> cellSetOld, CellSet<ExtendedCell> cellSetNew) {</span> |
| <span class="source-line-no">207</span><span id="line-207"> this.cellSet.compareAndSet(cellSetOld, cellSetNew);</span> |
| <span class="source-line-no">208</span><span id="line-208"> return this;</span> |
| <span class="source-line-no">209</span><span id="line-209"> }</span> |
| <span class="source-line-no">210</span><span id="line-210"></span> |
| <span class="source-line-no">211</span><span id="line-211"> @Override</span> |
| <span class="source-line-no">212</span><span id="line-212"> public MemStoreSize getMemStoreSize() {</span> |
| <span class="source-line-no">213</span><span id="line-213"> return this.memStoreSizing.getMemStoreSize();</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"></span> |
| <span class="source-line-no">216</span><span id="line-216"> @Override</span> |
| <span class="source-line-no">217</span><span id="line-217"> public long getDataSize() {</span> |
| <span class="source-line-no">218</span><span id="line-218"> return this.memStoreSizing.getDataSize();</span> |
| <span class="source-line-no">219</span><span id="line-219"> }</span> |
| <span class="source-line-no">220</span><span id="line-220"></span> |
| <span class="source-line-no">221</span><span id="line-221"> @Override</span> |
| <span class="source-line-no">222</span><span id="line-222"> public long getHeapSize() {</span> |
| <span class="source-line-no">223</span><span id="line-223"> return this.memStoreSizing.getHeapSize();</span> |
| <span class="source-line-no">224</span><span id="line-224"> }</span> |
| <span class="source-line-no">225</span><span id="line-225"></span> |
| <span class="source-line-no">226</span><span id="line-226"> @Override</span> |
| <span class="source-line-no">227</span><span id="line-227"> public long getOffHeapSize() {</span> |
| <span class="source-line-no">228</span><span id="line-228"> return this.memStoreSizing.getOffHeapSize();</span> |
| <span class="source-line-no">229</span><span id="line-229"> }</span> |
| <span class="source-line-no">230</span><span id="line-230"></span> |
| <span class="source-line-no">231</span><span id="line-231"> @Override</span> |
| <span class="source-line-no">232</span><span id="line-232"> public int getCellsCount() {</span> |
| <span class="source-line-no">233</span><span id="line-233"> return memStoreSizing.getCellsCount();</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> @Override</span> |
| <span class="source-line-no">237</span><span id="line-237"> public long incMemStoreSize(long delta, long heapOverhead, long offHeapOverhead, int cellsCount) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> return this.memStoreSizing.incMemStoreSize(delta, heapOverhead, offHeapOverhead, cellsCount);</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"></span> |
| <span class="source-line-no">241</span><span id="line-241"> public boolean sharedLock() {</span> |
| <span class="source-line-no">242</span><span id="line-242"> return updatesLock.readLock().tryLock();</span> |
| <span class="source-line-no">243</span><span id="line-243"> }</span> |
| <span class="source-line-no">244</span><span id="line-244"></span> |
| <span class="source-line-no">245</span><span id="line-245"> public void sharedUnlock() {</span> |
| <span class="source-line-no">246</span><span id="line-246"> updatesLock.readLock().unlock();</span> |
| <span class="source-line-no">247</span><span id="line-247"> }</span> |
| <span class="source-line-no">248</span><span id="line-248"></span> |
| <span class="source-line-no">249</span><span id="line-249"> public void waitForUpdates() {</span> |
| <span class="source-line-no">250</span><span id="line-250"> if (!updatesLock.isWriteLocked()) {</span> |
| <span class="source-line-no">251</span><span id="line-251"> updatesLock.writeLock().lock();</span> |
| <span class="source-line-no">252</span><span id="line-252"> }</span> |
| <span class="source-line-no">253</span><span id="line-253"> }</span> |
| <span class="source-line-no">254</span><span id="line-254"></span> |
| <span class="source-line-no">255</span><span id="line-255"> @Override</span> |
| <span class="source-line-no">256</span><span id="line-256"> public boolean compareAndSetDataSize(long expected, long updated) {</span> |
| <span class="source-line-no">257</span><span id="line-257"> return memStoreSizing.compareAndSetDataSize(expected, updated);</span> |
| <span class="source-line-no">258</span><span id="line-258"> }</span> |
| <span class="source-line-no">259</span><span id="line-259"></span> |
| <span class="source-line-no">260</span><span id="line-260"> public long getMinSequenceId() {</span> |
| <span class="source-line-no">261</span><span id="line-261"> return minSequenceId;</span> |
| <span class="source-line-no">262</span><span id="line-262"> }</span> |
| <span class="source-line-no">263</span><span id="line-263"></span> |
| <span class="source-line-no">264</span><span id="line-264"> public TimeRangeTracker getTimeRangeTracker() {</span> |
| <span class="source-line-no">265</span><span id="line-265"> return this.timeRangeTracker;</span> |
| <span class="source-line-no">266</span><span id="line-266"> }</span> |
| <span class="source-line-no">267</span><span id="line-267"></span> |
| <span class="source-line-no">268</span><span id="line-268"> // *** Methods for SegmentsScanner</span> |
| <span class="source-line-no">269</span><span id="line-269"> public ExtendedCell last() {</span> |
| <span class="source-line-no">270</span><span id="line-270"> return getCellSet().last();</span> |
| <span class="source-line-no">271</span><span id="line-271"> }</span> |
| <span class="source-line-no">272</span><span id="line-272"></span> |
| <span class="source-line-no">273</span><span id="line-273"> public Iterator<ExtendedCell> iterator() {</span> |
| <span class="source-line-no">274</span><span id="line-274"> return getCellSet().iterator();</span> |
| <span class="source-line-no">275</span><span id="line-275"> }</span> |
| <span class="source-line-no">276</span><span id="line-276"></span> |
| <span class="source-line-no">277</span><span id="line-277"> public SortedSet<ExtendedCell> headSet(ExtendedCell firstKeyOnRow) {</span> |
| <span class="source-line-no">278</span><span id="line-278"> return getCellSet().headSet(firstKeyOnRow);</span> |
| <span class="source-line-no">279</span><span id="line-279"> }</span> |
| <span class="source-line-no">280</span><span id="line-280"></span> |
| <span class="source-line-no">281</span><span id="line-281"> public int compare(Cell left, Cell right) {</span> |
| <span class="source-line-no">282</span><span id="line-282"> return getComparator().compare(left, right);</span> |
| <span class="source-line-no">283</span><span id="line-283"> }</span> |
| <span class="source-line-no">284</span><span id="line-284"></span> |
| <span class="source-line-no">285</span><span id="line-285"> public int compareRows(Cell left, Cell right) {</span> |
| <span class="source-line-no">286</span><span id="line-286"> return getComparator().compareRows(left, right);</span> |
| <span class="source-line-no">287</span><span id="line-287"> }</span> |
| <span class="source-line-no">288</span><span id="line-288"></span> |
| <span class="source-line-no">289</span><span id="line-289"> /** Returns a set of all cells in the segment */</span> |
| <span class="source-line-no">290</span><span id="line-290"> protected CellSet<ExtendedCell> getCellSet() {</span> |
| <span class="source-line-no">291</span><span id="line-291"> return cellSet.get();</span> |
| <span class="source-line-no">292</span><span id="line-292"> }</span> |
| <span class="source-line-no">293</span><span id="line-293"></span> |
| <span class="source-line-no">294</span><span id="line-294"> /**</span> |
| <span class="source-line-no">295</span><span id="line-295"> * Returns the Cell comparator used by this segment</span> |
| <span class="source-line-no">296</span><span id="line-296"> * @return the Cell comparator used by this segment</span> |
| <span class="source-line-no">297</span><span id="line-297"> */</span> |
| <span class="source-line-no">298</span><span id="line-298"> protected CellComparator getComparator() {</span> |
| <span class="source-line-no">299</span><span id="line-299"> return comparator;</span> |
| <span class="source-line-no">300</span><span id="line-300"> }</span> |
| <span class="source-line-no">301</span><span id="line-301"></span> |
| <span class="source-line-no">302</span><span id="line-302"> protected void internalAdd(ExtendedCell cell, boolean mslabUsed, MemStoreSizing memstoreSizing,</span> |
| <span class="source-line-no">303</span><span id="line-303"> boolean sizeAddedPreOperation) {</span> |
| <span class="source-line-no">304</span><span id="line-304"> boolean succ = getCellSet().add(cell);</span> |
| <span class="source-line-no">305</span><span id="line-305"> updateMetaInfo(cell, succ, mslabUsed, memstoreSizing, sizeAddedPreOperation);</span> |
| <span class="source-line-no">306</span><span id="line-306"> }</span> |
| <span class="source-line-no">307</span><span id="line-307"></span> |
| <span class="source-line-no">308</span><span id="line-308"> protected void updateMetaInfo(ExtendedCell cellToAdd, boolean succ, boolean mslabUsed,</span> |
| <span class="source-line-no">309</span><span id="line-309"> MemStoreSizing memstoreSizing, boolean sizeAddedPreOperation) {</span> |
| <span class="source-line-no">310</span><span id="line-310"> long delta = 0;</span> |
| <span class="source-line-no">311</span><span id="line-311"> long cellSize = getCellLength(cellToAdd);</span> |
| <span class="source-line-no">312</span><span id="line-312"> int cellsCount = succ ? 1 : 0;</span> |
| <span class="source-line-no">313</span><span id="line-313"> // If there's already a same cell in the CellSet and we are using MSLAB, we must count in the</span> |
| <span class="source-line-no">314</span><span id="line-314"> // MSLAB allocation size as well, or else there will be memory leak (occupied heap size larger</span> |
| <span class="source-line-no">315</span><span id="line-315"> // than the counted number)</span> |
| <span class="source-line-no">316</span><span id="line-316"> if (succ || mslabUsed) {</span> |
| <span class="source-line-no">317</span><span id="line-317"> delta = cellSize;</span> |
| <span class="source-line-no">318</span><span id="line-318"> }</span> |
| <span class="source-line-no">319</span><span id="line-319"> if (sizeAddedPreOperation) {</span> |
| <span class="source-line-no">320</span><span id="line-320"> delta -= cellSize;</span> |
| <span class="source-line-no">321</span><span id="line-321"> }</span> |
| <span class="source-line-no">322</span><span id="line-322"> long heapSize = heapSizeChange(cellToAdd, succ || mslabUsed);</span> |
| <span class="source-line-no">323</span><span id="line-323"> long offHeapSize = offHeapSizeChange(cellToAdd, succ || mslabUsed);</span> |
| <span class="source-line-no">324</span><span id="line-324"> incMemStoreSize(delta, heapSize, offHeapSize, cellsCount);</span> |
| <span class="source-line-no">325</span><span id="line-325"> if (memstoreSizing != null) {</span> |
| <span class="source-line-no">326</span><span id="line-326"> memstoreSizing.incMemStoreSize(delta, heapSize, offHeapSize, cellsCount);</span> |
| <span class="source-line-no">327</span><span id="line-327"> }</span> |
| <span class="source-line-no">328</span><span id="line-328"> getTimeRangeTracker().includeTimestamp(cellToAdd);</span> |
| <span class="source-line-no">329</span><span id="line-329"> minSequenceId = Math.min(minSequenceId, cellToAdd.getSequenceId());</span> |
| <span class="source-line-no">330</span><span id="line-330"> // In no tags case this NoTagsKeyValue.getTagsLength() is a cheap call.</span> |
| <span class="source-line-no">331</span><span id="line-331"> // When we use ACL CP or Visibility CP which deals with Tags during</span> |
| <span class="source-line-no">332</span><span id="line-332"> // mutation, the TagRewriteCell.getTagsLength() is a cheaper call. We do not</span> |
| <span class="source-line-no">333</span><span id="line-333"> // parse the byte[] to identify the tags length.</span> |
| <span class="source-line-no">334</span><span id="line-334"> if (cellToAdd.getTagsLength() > 0) {</span> |
| <span class="source-line-no">335</span><span id="line-335"> tagsPresent = true;</span> |
| <span class="source-line-no">336</span><span id="line-336"> }</span> |
| <span class="source-line-no">337</span><span id="line-337"> }</span> |
| <span class="source-line-no">338</span><span id="line-338"></span> |
| <span class="source-line-no">339</span><span id="line-339"> protected void updateMetaInfo(ExtendedCell cellToAdd, boolean succ,</span> |
| <span class="source-line-no">340</span><span id="line-340"> MemStoreSizing memstoreSizing) {</span> |
| <span class="source-line-no">341</span><span id="line-341"> updateMetaInfo(cellToAdd, succ, (getMemStoreLAB() != null), memstoreSizing, false);</span> |
| <span class="source-line-no">342</span><span id="line-342"> }</span> |
| <span class="source-line-no">343</span><span id="line-343"></span> |
| <span class="source-line-no">344</span><span id="line-344"> /**</span> |
| <span class="source-line-no">345</span><span id="line-345"> * @return The increase in heap size because of this cell addition. This includes this cell POJO's</span> |
| <span class="source-line-no">346</span><span id="line-346"> * heap size itself and additional overhead because of addition on to CSLM.</span> |
| <span class="source-line-no">347</span><span id="line-347"> */</span> |
| <span class="source-line-no">348</span><span id="line-348"> protected long heapSizeChange(Cell cell, boolean allocated) {</span> |
| <span class="source-line-no">349</span><span id="line-349"> long res = 0;</span> |
| <span class="source-line-no">350</span><span id="line-350"> if (allocated) {</span> |
| <span class="source-line-no">351</span><span id="line-351"> boolean onHeap = true;</span> |
| <span class="source-line-no">352</span><span id="line-352"> MemStoreLAB memStoreLAB = getMemStoreLAB();</span> |
| <span class="source-line-no">353</span><span id="line-353"> if (memStoreLAB != null) {</span> |
| <span class="source-line-no">354</span><span id="line-354"> onHeap = memStoreLAB.isOnHeap();</span> |
| <span class="source-line-no">355</span><span id="line-355"> }</span> |
| <span class="source-line-no">356</span><span id="line-356"> res += indexEntryOnHeapSize(onHeap);</span> |
| <span class="source-line-no">357</span><span id="line-357"> if (onHeap) {</span> |
| <span class="source-line-no">358</span><span id="line-358"> res += cell.heapSize();</span> |
| <span class="source-line-no">359</span><span id="line-359"> }</span> |
| <span class="source-line-no">360</span><span id="line-360"> res = ClassSize.align(res);</span> |
| <span class="source-line-no">361</span><span id="line-361"> }</span> |
| <span class="source-line-no">362</span><span id="line-362"> return res;</span> |
| <span class="source-line-no">363</span><span id="line-363"> }</span> |
| <span class="source-line-no">364</span><span id="line-364"></span> |
| <span class="source-line-no">365</span><span id="line-365"> protected long offHeapSizeChange(Cell cell, boolean allocated) {</span> |
| <span class="source-line-no">366</span><span id="line-366"> long res = 0;</span> |
| <span class="source-line-no">367</span><span id="line-367"> if (allocated) {</span> |
| <span class="source-line-no">368</span><span id="line-368"> boolean offHeap = false;</span> |
| <span class="source-line-no">369</span><span id="line-369"> MemStoreLAB memStoreLAB = getMemStoreLAB();</span> |
| <span class="source-line-no">370</span><span id="line-370"> if (memStoreLAB != null) {</span> |
| <span class="source-line-no">371</span><span id="line-371"> offHeap = memStoreLAB.isOffHeap();</span> |
| <span class="source-line-no">372</span><span id="line-372"> }</span> |
| <span class="source-line-no">373</span><span id="line-373"> res += indexEntryOffHeapSize(offHeap);</span> |
| <span class="source-line-no">374</span><span id="line-374"> if (offHeap) {</span> |
| <span class="source-line-no">375</span><span id="line-375"> res += cell.heapSize();</span> |
| <span class="source-line-no">376</span><span id="line-376"> }</span> |
| <span class="source-line-no">377</span><span id="line-377"> res = ClassSize.align(res);</span> |
| <span class="source-line-no">378</span><span id="line-378"> }</span> |
| <span class="source-line-no">379</span><span id="line-379"> return res;</span> |
| <span class="source-line-no">380</span><span id="line-380"> }</span> |
| <span class="source-line-no">381</span><span id="line-381"></span> |
| <span class="source-line-no">382</span><span id="line-382"> protected long indexEntryOnHeapSize(boolean onHeap) {</span> |
| <span class="source-line-no">383</span><span id="line-383"> // in most cases index is allocated on-heap</span> |
| <span class="source-line-no">384</span><span id="line-384"> // override this method when it is not always the case, e.g., in CCM</span> |
| <span class="source-line-no">385</span><span id="line-385"> return indexEntrySize();</span> |
| <span class="source-line-no">386</span><span id="line-386"> }</span> |
| <span class="source-line-no">387</span><span id="line-387"></span> |
| <span class="source-line-no">388</span><span id="line-388"> protected long indexEntryOffHeapSize(boolean offHeap) {</span> |
| <span class="source-line-no">389</span><span id="line-389"> // in most cases index is allocated on-heap</span> |
| <span class="source-line-no">390</span><span id="line-390"> // override this method when it is not always the case, e.g., in CCM</span> |
| <span class="source-line-no">391</span><span id="line-391"> return 0;</span> |
| <span class="source-line-no">392</span><span id="line-392"> }</span> |
| <span class="source-line-no">393</span><span id="line-393"></span> |
| <span class="source-line-no">394</span><span id="line-394"> protected abstract long indexEntrySize();</span> |
| <span class="source-line-no">395</span><span id="line-395"></span> |
| <span class="source-line-no">396</span><span id="line-396"> /**</span> |
| <span class="source-line-no">397</span><span id="line-397"> * Returns a subset of the segment cell set, which starts with the given cell</span> |
| <span class="source-line-no">398</span><span id="line-398"> * @param firstCell a cell in the segment</span> |
| <span class="source-line-no">399</span><span id="line-399"> * @return a subset of the segment cell set, which starts with the given cell</span> |
| <span class="source-line-no">400</span><span id="line-400"> */</span> |
| <span class="source-line-no">401</span><span id="line-401"> protected SortedSet<ExtendedCell> tailSet(ExtendedCell firstCell) {</span> |
| <span class="source-line-no">402</span><span id="line-402"> return getCellSet().tailSet(firstCell);</span> |
| <span class="source-line-no">403</span><span id="line-403"> }</span> |
| <span class="source-line-no">404</span><span id="line-404"></span> |
| <span class="source-line-no">405</span><span id="line-405"> MemStoreLAB getMemStoreLAB() {</span> |
| <span class="source-line-no">406</span><span id="line-406"> return memStoreLAB;</span> |
| <span class="source-line-no">407</span><span id="line-407"> }</span> |
| <span class="source-line-no">408</span><span id="line-408"></span> |
| <span class="source-line-no">409</span><span id="line-409"> // Debug methods</span> |
| <span class="source-line-no">410</span><span id="line-410"> /**</span> |
| <span class="source-line-no">411</span><span id="line-411"> * Dumps all cells of the segment into the given log</span> |
| <span class="source-line-no">412</span><span id="line-412"> */</span> |
| <span class="source-line-no">413</span><span id="line-413"> void dump(Logger log) {</span> |
| <span class="source-line-no">414</span><span id="line-414"> for (Cell cell : getCellSet()) {</span> |
| <span class="source-line-no">415</span><span id="line-415"> log.debug(Objects.toString(cell));</span> |
| <span class="source-line-no">416</span><span id="line-416"> }</span> |
| <span class="source-line-no">417</span><span id="line-417"> }</span> |
| <span class="source-line-no">418</span><span id="line-418"></span> |
| <span class="source-line-no">419</span><span id="line-419"> @Override</span> |
| <span class="source-line-no">420</span><span id="line-420"> public String toString() {</span> |
| <span class="source-line-no">421</span><span id="line-421"> String res = "type=" + this.getClass().getSimpleName() + ", ";</span> |
| <span class="source-line-no">422</span><span id="line-422"> res += "empty=" + (isEmpty() ? "yes" : "no") + ", ";</span> |
| <span class="source-line-no">423</span><span id="line-423"> res += "cellCount=" + getCellsCount() + ", ";</span> |
| <span class="source-line-no">424</span><span id="line-424"> res += "cellSize=" + getDataSize() + ", ";</span> |
| <span class="source-line-no">425</span><span id="line-425"> res += "totalHeapSize=" + getHeapSize() + ", ";</span> |
| <span class="source-line-no">426</span><span id="line-426"> res += "min timestamp=" + timeRangeTracker.getMin() + ", ";</span> |
| <span class="source-line-no">427</span><span id="line-427"> res += "max timestamp=" + timeRangeTracker.getMax();</span> |
| <span class="source-line-no">428</span><span id="line-428"> return res;</span> |
| <span class="source-line-no">429</span><span id="line-429"> }</span> |
| <span class="source-line-no">430</span><span id="line-430"></span> |
| <span class="source-line-no">431</span><span id="line-431"> private ReentrantReadWriteLock getUpdatesLock() {</span> |
| <span class="source-line-no">432</span><span id="line-432"> return updatesLock;</span> |
| <span class="source-line-no">433</span><span id="line-433"> }</span> |
| <span class="source-line-no">434</span><span id="line-434">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
