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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.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.ArrayList;</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.concurrent.ThreadPoolExecutor;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.concurrent.atomic.AtomicBoolean;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.Cell;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.CellComparator;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.MemoryCompactionPolicy;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.exceptions.IllegalArgumentIOException;</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.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.wal.WAL;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.util.StringUtils;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.Logger;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41">/**</span> |
| <span class="source-line-no">042</span><span id="line-42"> * A memstore implementation which supports in-memory compaction. A compaction pipeline is added</span> |
| <span class="source-line-no">043</span><span id="line-43"> * between the active set and the snapshot data structures; it consists of a list of segments that</span> |
| <span class="source-line-no">044</span><span id="line-44"> * are subject to compaction. Like the snapshot, all pipeline segments are read-only; updates only</span> |
| <span class="source-line-no">045</span><span id="line-45"> * affect the active set. To ensure this property we take advantage of the existing blocking</span> |
| <span class="source-line-no">046</span><span id="line-46"> * mechanism -- the active set is pushed to the pipeline while holding the region's updatesLock in</span> |
| <span class="source-line-no">047</span><span id="line-47"> * exclusive mode. Periodically, a compaction is applied in the background to all pipeline segments</span> |
| <span class="source-line-no">048</span><span id="line-48"> * resulting in a single read-only component. The ``old'' segments are discarded when no scanner is</span> |
| <span class="source-line-no">049</span><span id="line-49"> * reading them.</span> |
| <span class="source-line-no">050</span><span id="line-50"> */</span> |
| <span class="source-line-no">051</span><span id="line-51">@InterfaceAudience.Private</span> |
| <span class="source-line-no">052</span><span id="line-52">public class CompactingMemStore extends AbstractMemStore {</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> // The external setting of the compacting MemStore behaviour</span> |
| <span class="source-line-no">055</span><span id="line-55"> public static final String COMPACTING_MEMSTORE_TYPE_KEY =</span> |
| <span class="source-line-no">056</span><span id="line-56"> "hbase.hregion.compacting.memstore.type";</span> |
| <span class="source-line-no">057</span><span id="line-57"> public static final String COMPACTING_MEMSTORE_TYPE_DEFAULT =</span> |
| <span class="source-line-no">058</span><span id="line-58"> String.valueOf(MemoryCompactionPolicy.NONE);</span> |
| <span class="source-line-no">059</span><span id="line-59"> // Default fraction of in-memory-flush size w.r.t. flush-to-disk size</span> |
| <span class="source-line-no">060</span><span id="line-60"> public static final String IN_MEMORY_FLUSH_THRESHOLD_FACTOR_KEY =</span> |
| <span class="source-line-no">061</span><span id="line-61"> "hbase.memstore.inmemoryflush.threshold.factor";</span> |
| <span class="source-line-no">062</span><span id="line-62"> private static final int IN_MEMORY_FLUSH_MULTIPLIER = 1;</span> |
| <span class="source-line-no">063</span><span id="line-63"> // In-Memory compaction pool size</span> |
| <span class="source-line-no">064</span><span id="line-64"> public static final String IN_MEMORY_CONPACTION_POOL_SIZE_KEY =</span> |
| <span class="source-line-no">065</span><span id="line-65"> "hbase.regionserver.inmemory.compaction.pool.size";</span> |
| <span class="source-line-no">066</span><span id="line-66"> public static final int IN_MEMORY_CONPACTION_POOL_SIZE_DEFAULT = 10;</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> private static final Logger LOG = LoggerFactory.getLogger(CompactingMemStore.class);</span> |
| <span class="source-line-no">069</span><span id="line-69"> private HStore store;</span> |
| <span class="source-line-no">070</span><span id="line-70"> private CompactionPipeline pipeline;</span> |
| <span class="source-line-no">071</span><span id="line-71"> protected MemStoreCompactor compactor;</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> private long inmemoryFlushSize; // the threshold on active size for in-memory flush</span> |
| <span class="source-line-no">074</span><span id="line-74"> private final AtomicBoolean inMemoryCompactionInProgress = new AtomicBoolean(false);</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> // inWalReplay is true while we are synchronously replaying the edits from WAL</span> |
| <span class="source-line-no">077</span><span id="line-77"> private boolean inWalReplay = false;</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> protected final AtomicBoolean allowCompaction = new AtomicBoolean(true);</span> |
| <span class="source-line-no">080</span><span id="line-80"> private boolean compositeSnapshot = true;</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> /**</span> |
| <span class="source-line-no">083</span><span id="line-83"> * Types of indexes (part of immutable segments) to be used after flattening, compaction, or merge</span> |
| <span class="source-line-no">084</span><span id="line-84"> * are applied.</span> |
| <span class="source-line-no">085</span><span id="line-85"> */</span> |
| <span class="source-line-no">086</span><span id="line-86"> public enum IndexType {</span> |
| <span class="source-line-no">087</span><span id="line-87"> CSLM_MAP, // ConcurrentSkipLisMap</span> |
| <span class="source-line-no">088</span><span id="line-88"> ARRAY_MAP, // CellArrayMap</span> |
| <span class="source-line-no">089</span><span id="line-89"> CHUNK_MAP // CellChunkMap</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> private IndexType indexType = IndexType.ARRAY_MAP; // default implementation</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> public static final long DEEP_OVERHEAD =</span> |
| <span class="source-line-no">095</span><span id="line-95"> ClassSize.align(AbstractMemStore.DEEP_OVERHEAD + 6 * ClassSize.REFERENCE // Store,</span> |
| <span class="source-line-no">096</span><span id="line-96"> // CompactionPipeline,</span> |
| <span class="source-line-no">097</span><span id="line-97"> // MemStoreCompactor, inMemoryCompactionInProgress,</span> |
| <span class="source-line-no">098</span><span id="line-98"> // allowCompaction, indexType</span> |
| <span class="source-line-no">099</span><span id="line-99"> + Bytes.SIZEOF_LONG // inmemoryFlushSize</span> |
| <span class="source-line-no">100</span><span id="line-100"> + 2 * Bytes.SIZEOF_BOOLEAN // compositeSnapshot and inWalReplay</span> |
| <span class="source-line-no">101</span><span id="line-101"> + 2 * ClassSize.ATOMIC_BOOLEAN// inMemoryCompactionInProgress and allowCompaction</span> |
| <span class="source-line-no">102</span><span id="line-102"> + CompactionPipeline.DEEP_OVERHEAD + MemStoreCompactor.DEEP_OVERHEAD);</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> public CompactingMemStore(Configuration conf, CellComparator c, HStore store,</span> |
| <span class="source-line-no">105</span><span id="line-105"> RegionServicesForStores regionServices, MemoryCompactionPolicy compactionPolicy)</span> |
| <span class="source-line-no">106</span><span id="line-106"> throws IOException {</span> |
| <span class="source-line-no">107</span><span id="line-107"> super(conf, c, regionServices);</span> |
| <span class="source-line-no">108</span><span id="line-108"> this.store = store;</span> |
| <span class="source-line-no">109</span><span id="line-109"> this.regionServices = regionServices;</span> |
| <span class="source-line-no">110</span><span id="line-110"> this.pipeline = new CompactionPipeline(getRegionServices());</span> |
| <span class="source-line-no">111</span><span id="line-111"> this.compactor = createMemStoreCompactor(compactionPolicy);</span> |
| <span class="source-line-no">112</span><span id="line-112"> if (conf.getBoolean(MemStoreLAB.USEMSLAB_KEY, MemStoreLAB.USEMSLAB_DEFAULT)) {</span> |
| <span class="source-line-no">113</span><span id="line-113"> // if user requested to work with MSLABs (whether on- or off-heap), then the</span> |
| <span class="source-line-no">114</span><span id="line-114"> // immutable segments are going to use CellChunkMap as their index</span> |
| <span class="source-line-no">115</span><span id="line-115"> indexType = IndexType.CHUNK_MAP;</span> |
| <span class="source-line-no">116</span><span id="line-116"> } else {</span> |
| <span class="source-line-no">117</span><span id="line-117"> indexType = IndexType.ARRAY_MAP;</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"> // initialization of the flush size should happen after initialization of the index type</span> |
| <span class="source-line-no">120</span><span id="line-120"> // so do not transfer the following method</span> |
| <span class="source-line-no">121</span><span id="line-121"> initInmemoryFlushSize(conf);</span> |
| <span class="source-line-no">122</span><span id="line-122"> LOG.info(</span> |
| <span class="source-line-no">123</span><span id="line-123"> "Store={}, in-memory flush size threshold={}, immutable segments index type={}, "</span> |
| <span class="source-line-no">124</span><span id="line-124"> + "compactor={}",</span> |
| <span class="source-line-no">125</span><span id="line-125"> this.store.getColumnFamilyName(), StringUtils.byteDesc(this.inmemoryFlushSize),</span> |
| <span class="source-line-no">126</span><span id="line-126"> this.indexType, (this.compactor == null ? "NULL" : this.compactor.toString()));</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"></span> |
| <span class="source-line-no">129</span><span id="line-129"> protected MemStoreCompactor createMemStoreCompactor(MemoryCompactionPolicy compactionPolicy)</span> |
| <span class="source-line-no">130</span><span id="line-130"> throws IllegalArgumentIOException {</span> |
| <span class="source-line-no">131</span><span id="line-131"> return new MemStoreCompactor(this, compactionPolicy);</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"> private void initInmemoryFlushSize(Configuration conf) {</span> |
| <span class="source-line-no">135</span><span id="line-135"> double factor = 0;</span> |
| <span class="source-line-no">136</span><span id="line-136"> long memstoreFlushSize = getRegionServices().getMemStoreFlushSize();</span> |
| <span class="source-line-no">137</span><span id="line-137"> int numStores = getRegionServices().getNumStores();</span> |
| <span class="source-line-no">138</span><span id="line-138"> if (numStores <= 1) {</span> |
| <span class="source-line-no">139</span><span id="line-139"> // Family number might also be zero in some of our unit test case</span> |
| <span class="source-line-no">140</span><span id="line-140"> numStores = 1;</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142"> factor = conf.getDouble(IN_MEMORY_FLUSH_THRESHOLD_FACTOR_KEY, 0.0);</span> |
| <span class="source-line-no">143</span><span id="line-143"> if (factor != 0.0) {</span> |
| <span class="source-line-no">144</span><span id="line-144"> // multiply by a factor (the same factor for all index types)</span> |
| <span class="source-line-no">145</span><span id="line-145"> inmemoryFlushSize = (long) (factor * memstoreFlushSize) / numStores;</span> |
| <span class="source-line-no">146</span><span id="line-146"> } else {</span> |
| <span class="source-line-no">147</span><span id="line-147"> inmemoryFlushSize = IN_MEMORY_FLUSH_MULTIPLIER</span> |
| <span class="source-line-no">148</span><span id="line-148"> * conf.getLong(MemStoreLAB.CHUNK_SIZE_KEY, MemStoreLAB.CHUNK_SIZE_DEFAULT);</span> |
| <span class="source-line-no">149</span><span id="line-149"> inmemoryFlushSize -= ChunkCreator.SIZEOF_CHUNK_HEADER;</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"> }</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> /**</span> |
| <span class="source-line-no">154</span><span id="line-154"> * @return Total memory occupied by this MemStore. This won't include any size occupied by the</span> |
| <span class="source-line-no">155</span><span id="line-155"> * snapshot. We assume the snapshot will get cleared soon. This is not thread safe and the</span> |
| <span class="source-line-no">156</span><span id="line-156"> * memstore may be changed while computing its size. It is the responsibility of the</span> |
| <span class="source-line-no">157</span><span id="line-157"> * caller to make sure this doesn't happen.</span> |
| <span class="source-line-no">158</span><span id="line-158"> */</span> |
| <span class="source-line-no">159</span><span id="line-159"> @Override</span> |
| <span class="source-line-no">160</span><span id="line-160"> public MemStoreSize size() {</span> |
| <span class="source-line-no">161</span><span id="line-161"> MemStoreSizing memstoreSizing = new NonThreadSafeMemStoreSizing();</span> |
| <span class="source-line-no">162</span><span id="line-162"> memstoreSizing.incMemStoreSize(getActive().getMemStoreSize());</span> |
| <span class="source-line-no">163</span><span id="line-163"> for (Segment item : pipeline.getSegments()) {</span> |
| <span class="source-line-no">164</span><span id="line-164"> memstoreSizing.incMemStoreSize(item.getMemStoreSize());</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"> return memstoreSizing.getMemStoreSize();</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"></span> |
| <span class="source-line-no">169</span><span id="line-169"> /**</span> |
| <span class="source-line-no">170</span><span id="line-170"> * This method is called before the flush is executed.</span> |
| <span class="source-line-no">171</span><span id="line-171"> * @return an estimation (lower bound) of the unflushed sequence id in memstore after the flush is</span> |
| <span class="source-line-no">172</span><span id="line-172"> * executed. if memstore will be cleared returns {@code HConstants.NO_SEQNUM}.</span> |
| <span class="source-line-no">173</span><span id="line-173"> */</span> |
| <span class="source-line-no">174</span><span id="line-174"> @Override</span> |
| <span class="source-line-no">175</span><span id="line-175"> public long preFlushSeqIDEstimation() {</span> |
| <span class="source-line-no">176</span><span id="line-176"> if (compositeSnapshot) {</span> |
| <span class="source-line-no">177</span><span id="line-177"> return HConstants.NO_SEQNUM;</span> |
| <span class="source-line-no">178</span><span id="line-178"> }</span> |
| <span class="source-line-no">179</span><span id="line-179"> Segment segment = getLastSegment();</span> |
| <span class="source-line-no">180</span><span id="line-180"> if (segment == null) {</span> |
| <span class="source-line-no">181</span><span id="line-181"> return HConstants.NO_SEQNUM;</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"> return segment.getMinSequenceId();</span> |
| <span class="source-line-no">184</span><span id="line-184"> }</span> |
| <span class="source-line-no">185</span><span id="line-185"></span> |
| <span class="source-line-no">186</span><span id="line-186"> @Override</span> |
| <span class="source-line-no">187</span><span id="line-187"> public boolean isSloppy() {</span> |
| <span class="source-line-no">188</span><span id="line-188"> return true;</span> |
| <span class="source-line-no">189</span><span id="line-189"> }</span> |
| <span class="source-line-no">190</span><span id="line-190"></span> |
| <span class="source-line-no">191</span><span id="line-191"> /**</span> |
| <span class="source-line-no">192</span><span id="line-192"> * Push the current active memstore segment into the pipeline and create a snapshot of the tail of</span> |
| <span class="source-line-no">193</span><span id="line-193"> * current compaction pipeline Snapshot must be cleared by call to {@link #clearSnapshot}.</span> |
| <span class="source-line-no">194</span><span id="line-194"> * {@link #clearSnapshot(long)}.</span> |
| <span class="source-line-no">195</span><span id="line-195"> * @return {@link MemStoreSnapshot}</span> |
| <span class="source-line-no">196</span><span id="line-196"> */</span> |
| <span class="source-line-no">197</span><span id="line-197"> @Override</span> |
| <span class="source-line-no">198</span><span id="line-198"> public MemStoreSnapshot snapshot() {</span> |
| <span class="source-line-no">199</span><span id="line-199"> // If snapshot currently has entries, then flusher failed or didn't call</span> |
| <span class="source-line-no">200</span><span id="line-200"> // cleanup. Log a warning.</span> |
| <span class="source-line-no">201</span><span id="line-201"> if (!this.snapshot.isEmpty()) {</span> |
| <span class="source-line-no">202</span><span id="line-202"> LOG.warn("Snapshot called again without clearing previous. "</span> |
| <span class="source-line-no">203</span><span id="line-203"> + "Doing nothing. Another ongoing flush or did we fail last attempt?");</span> |
| <span class="source-line-no">204</span><span id="line-204"> } else {</span> |
| <span class="source-line-no">205</span><span id="line-205"> LOG.debug("FLUSHING TO DISK {}, store={}",</span> |
| <span class="source-line-no">206</span><span id="line-206"> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName());</span> |
| <span class="source-line-no">207</span><span id="line-207"> stopCompaction();</span> |
| <span class="source-line-no">208</span><span id="line-208"> // region level lock ensures pushing active to pipeline is done in isolation</span> |
| <span class="source-line-no">209</span><span id="line-209"> // no concurrent update operations trying to flush the active segment</span> |
| <span class="source-line-no">210</span><span id="line-210"> pushActiveToPipeline(getActive(), true);</span> |
| <span class="source-line-no">211</span><span id="line-211"> resetTimeOfOldestEdit();</span> |
| <span class="source-line-no">212</span><span id="line-212"> snapshotId = EnvironmentEdgeManager.currentTime();</span> |
| <span class="source-line-no">213</span><span id="line-213"> // in both cases whatever is pushed to snapshot is cleared from the pipeline</span> |
| <span class="source-line-no">214</span><span id="line-214"> if (compositeSnapshot) {</span> |
| <span class="source-line-no">215</span><span id="line-215"> pushPipelineToSnapshot();</span> |
| <span class="source-line-no">216</span><span id="line-216"> } else {</span> |
| <span class="source-line-no">217</span><span id="line-217"> pushTailToSnapshot();</span> |
| <span class="source-line-no">218</span><span id="line-218"> }</span> |
| <span class="source-line-no">219</span><span id="line-219"> compactor.resetStats();</span> |
| <span class="source-line-no">220</span><span id="line-220"> }</span> |
| <span class="source-line-no">221</span><span id="line-221"> return new MemStoreSnapshot(snapshotId, this.snapshot);</span> |
| <span class="source-line-no">222</span><span id="line-222"> }</span> |
| <span class="source-line-no">223</span><span id="line-223"></span> |
| <span class="source-line-no">224</span><span id="line-224"> @Override</span> |
| <span class="source-line-no">225</span><span id="line-225"> public MemStoreSize getFlushableSize() {</span> |
| <span class="source-line-no">226</span><span id="line-226"> MemStoreSize mss = getSnapshotSize();</span> |
| <span class="source-line-no">227</span><span id="line-227"> if (mss.getDataSize() == 0) {</span> |
| <span class="source-line-no">228</span><span id="line-228"> // if snapshot is empty the tail of the pipeline (or everything in the memstore) is flushed</span> |
| <span class="source-line-no">229</span><span id="line-229"> if (compositeSnapshot) {</span> |
| <span class="source-line-no">230</span><span id="line-230"> MemStoreSizing memStoreSizing = new NonThreadSafeMemStoreSizing(pipeline.getPipelineSize());</span> |
| <span class="source-line-no">231</span><span id="line-231"> MutableSegment currActive = getActive();</span> |
| <span class="source-line-no">232</span><span id="line-232"> if (!currActive.isEmpty()) {</span> |
| <span class="source-line-no">233</span><span id="line-233"> memStoreSizing.incMemStoreSize(currActive.getMemStoreSize());</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"> mss = memStoreSizing.getMemStoreSize();</span> |
| <span class="source-line-no">236</span><span id="line-236"> } else {</span> |
| <span class="source-line-no">237</span><span id="line-237"> mss = pipeline.getTailSize();</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"> return mss.getDataSize() > 0 ? mss : getActive().getMemStoreSize();</span> |
| <span class="source-line-no">241</span><span id="line-241"> }</span> |
| <span class="source-line-no">242</span><span id="line-242"></span> |
| <span class="source-line-no">243</span><span id="line-243"> public void setInMemoryCompactionCompleted() {</span> |
| <span class="source-line-no">244</span><span id="line-244"> inMemoryCompactionInProgress.set(false);</span> |
| <span class="source-line-no">245</span><span id="line-245"> }</span> |
| <span class="source-line-no">246</span><span id="line-246"></span> |
| <span class="source-line-no">247</span><span id="line-247"> protected boolean setInMemoryCompactionFlag() {</span> |
| <span class="source-line-no">248</span><span id="line-248"> return inMemoryCompactionInProgress.compareAndSet(false, true);</span> |
| <span class="source-line-no">249</span><span id="line-249"> }</span> |
| <span class="source-line-no">250</span><span id="line-250"></span> |
| <span class="source-line-no">251</span><span id="line-251"> @Override</span> |
| <span class="source-line-no">252</span><span id="line-252"> protected long keySize() {</span> |
| <span class="source-line-no">253</span><span id="line-253"> // Need to consider dataSize/keySize of all segments in pipeline and active</span> |
| <span class="source-line-no">254</span><span id="line-254"> long keySize = getActive().getDataSize();</span> |
| <span class="source-line-no">255</span><span id="line-255"> for (Segment segment : this.pipeline.getSegments()) {</span> |
| <span class="source-line-no">256</span><span id="line-256"> keySize += segment.getDataSize();</span> |
| <span class="source-line-no">257</span><span id="line-257"> }</span> |
| <span class="source-line-no">258</span><span id="line-258"> return keySize;</span> |
| <span class="source-line-no">259</span><span id="line-259"> }</span> |
| <span class="source-line-no">260</span><span id="line-260"></span> |
| <span class="source-line-no">261</span><span id="line-261"> @Override</span> |
| <span class="source-line-no">262</span><span id="line-262"> protected long heapSize() {</span> |
| <span class="source-line-no">263</span><span id="line-263"> // Need to consider heapOverhead of all segments in pipeline and active</span> |
| <span class="source-line-no">264</span><span id="line-264"> long h = getActive().getHeapSize();</span> |
| <span class="source-line-no">265</span><span id="line-265"> for (Segment segment : this.pipeline.getSegments()) {</span> |
| <span class="source-line-no">266</span><span id="line-266"> h += segment.getHeapSize();</span> |
| <span class="source-line-no">267</span><span id="line-267"> }</span> |
| <span class="source-line-no">268</span><span id="line-268"> return h;</span> |
| <span class="source-line-no">269</span><span id="line-269"> }</span> |
| <span class="source-line-no">270</span><span id="line-270"></span> |
| <span class="source-line-no">271</span><span id="line-271"> @Override</span> |
| <span class="source-line-no">272</span><span id="line-272"> public void updateLowestUnflushedSequenceIdInWAL(boolean onlyIfGreater) {</span> |
| <span class="source-line-no">273</span><span id="line-273"> long minSequenceId = pipeline.getMinSequenceId();</span> |
| <span class="source-line-no">274</span><span id="line-274"> if (minSequenceId != Long.MAX_VALUE) {</span> |
| <span class="source-line-no">275</span><span id="line-275"> byte[] encodedRegionName = getRegionServices().getRegionInfo().getEncodedNameAsBytes();</span> |
| <span class="source-line-no">276</span><span id="line-276"> byte[] familyName = getFamilyNameInBytes();</span> |
| <span class="source-line-no">277</span><span id="line-277"> WAL WAL = getRegionServices().getWAL();</span> |
| <span class="source-line-no">278</span><span id="line-278"> if (WAL != null) {</span> |
| <span class="source-line-no">279</span><span id="line-279"> WAL.updateStore(encodedRegionName, familyName, minSequenceId, onlyIfGreater);</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</span> |
| <span class="source-line-no">281</span><span id="line-281"> }</span> |
| <span class="source-line-no">282</span><span id="line-282"> }</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"> * This message intends to inform the MemStore that next coming updates are going to be part of</span> |
| <span class="source-line-no">286</span><span id="line-286"> * the replaying edits from WAL</span> |
| <span class="source-line-no">287</span><span id="line-287"> */</span> |
| <span class="source-line-no">288</span><span id="line-288"> @Override</span> |
| <span class="source-line-no">289</span><span id="line-289"> public void startReplayingFromWAL() {</span> |
| <span class="source-line-no">290</span><span id="line-290"> inWalReplay = true;</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</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"> * This message intends to inform the MemStore that the replaying edits from WAL are done</span> |
| <span class="source-line-no">295</span><span id="line-295"> */</span> |
| <span class="source-line-no">296</span><span id="line-296"> @Override</span> |
| <span class="source-line-no">297</span><span id="line-297"> public void stopReplayingFromWAL() {</span> |
| <span class="source-line-no">298</span><span id="line-298"> inWalReplay = false;</span> |
| <span class="source-line-no">299</span><span id="line-299"> }</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"> * Issue any synchronization and test needed before applying the update For compacting memstore</span> |
| <span class="source-line-no">303</span><span id="line-303"> * this means checking the update can increase the size without overflow</span> |
| <span class="source-line-no">304</span><span id="line-304"> * @param currentActive the segment to be updated</span> |
| <span class="source-line-no">305</span><span id="line-305"> * @param cell the cell to be added</span> |
| <span class="source-line-no">306</span><span id="line-306"> * @param memstoreSizing object to accumulate region size changes</span> |
| <span class="source-line-no">307</span><span id="line-307"> * @return true iff can proceed with applying the update</span> |
| <span class="source-line-no">308</span><span id="line-308"> */</span> |
| <span class="source-line-no">309</span><span id="line-309"> @Override</span> |
| <span class="source-line-no">310</span><span id="line-310"> protected boolean preUpdate(MutableSegment currentActive, ExtendedCell cell,</span> |
| <span class="source-line-no">311</span><span id="line-311"> MemStoreSizing memstoreSizing) {</span> |
| <span class="source-line-no">312</span><span id="line-312"> if (currentActive.sharedLock()) {</span> |
| <span class="source-line-no">313</span><span id="line-313"> if (checkAndAddToActiveSize(currentActive, cell, memstoreSizing)) {</span> |
| <span class="source-line-no">314</span><span id="line-314"> return true;</span> |
| <span class="source-line-no">315</span><span id="line-315"> }</span> |
| <span class="source-line-no">316</span><span id="line-316"> currentActive.sharedUnlock();</span> |
| <span class="source-line-no">317</span><span id="line-317"> }</span> |
| <span class="source-line-no">318</span><span id="line-318"> return false;</span> |
| <span class="source-line-no">319</span><span id="line-319"> }</span> |
| <span class="source-line-no">320</span><span id="line-320"></span> |
| <span class="source-line-no">321</span><span id="line-321"> @Override</span> |
| <span class="source-line-no">322</span><span id="line-322"> protected void postUpdate(MutableSegment currentActive) {</span> |
| <span class="source-line-no">323</span><span id="line-323"> currentActive.sharedUnlock();</span> |
| <span class="source-line-no">324</span><span id="line-324"> }</span> |
| <span class="source-line-no">325</span><span id="line-325"></span> |
| <span class="source-line-no">326</span><span id="line-326"> @Override</span> |
| <span class="source-line-no">327</span><span id="line-327"> protected boolean sizeAddedPreOperation() {</span> |
| <span class="source-line-no">328</span><span id="line-328"> return true;</span> |
| <span class="source-line-no">329</span><span id="line-329"> }</span> |
| <span class="source-line-no">330</span><span id="line-330"></span> |
| <span class="source-line-no">331</span><span id="line-331"> // the getSegments() method is used for tests only</span> |
| <span class="source-line-no">332</span><span id="line-332"> @Override</span> |
| <span class="source-line-no">333</span><span id="line-333"> protected List<Segment> getSegments() {</span> |
| <span class="source-line-no">334</span><span id="line-334"> List<? extends Segment> pipelineList = pipeline.getSegments();</span> |
| <span class="source-line-no">335</span><span id="line-335"> List<Segment> list = new ArrayList<>(pipelineList.size() + 2);</span> |
| <span class="source-line-no">336</span><span id="line-336"> list.add(getActive());</span> |
| <span class="source-line-no">337</span><span id="line-337"> list.addAll(pipelineList);</span> |
| <span class="source-line-no">338</span><span id="line-338"> list.addAll(snapshot.getAllSegments());</span> |
| <span class="source-line-no">339</span><span id="line-339"></span> |
| <span class="source-line-no">340</span><span id="line-340"> return list;</span> |
| <span class="source-line-no">341</span><span id="line-341"> }</span> |
| <span class="source-line-no">342</span><span id="line-342"></span> |
| <span class="source-line-no">343</span><span id="line-343"> // the following three methods allow to manipulate the settings of composite snapshot</span> |
| <span class="source-line-no">344</span><span id="line-344"> public void setCompositeSnapshot(boolean useCompositeSnapshot) {</span> |
| <span class="source-line-no">345</span><span id="line-345"> this.compositeSnapshot = useCompositeSnapshot;</span> |
| <span class="source-line-no">346</span><span id="line-346"> }</span> |
| <span class="source-line-no">347</span><span id="line-347"></span> |
| <span class="source-line-no">348</span><span id="line-348"> public boolean swapCompactedSegments(VersionedSegmentsList versionedList, ImmutableSegment result,</span> |
| <span class="source-line-no">349</span><span id="line-349"> boolean merge) {</span> |
| <span class="source-line-no">350</span><span id="line-350"> // last true stands for updating the region size</span> |
| <span class="source-line-no">351</span><span id="line-351"> return pipeline.swap(versionedList, result, !merge, true);</span> |
| <span class="source-line-no">352</span><span id="line-352"> }</span> |
| <span class="source-line-no">353</span><span id="line-353"></span> |
| <span class="source-line-no">354</span><span id="line-354"> /**</span> |
| <span class="source-line-no">355</span><span id="line-355"> * @param requesterVersion The caller must hold the VersionedList of the pipeline with version</span> |
| <span class="source-line-no">356</span><span id="line-356"> * taken earlier. This version must be passed as a parameter here. The</span> |
| <span class="source-line-no">357</span><span id="line-357"> * flattening happens only if versions match.</span> |
| <span class="source-line-no">358</span><span id="line-358"> */</span> |
| <span class="source-line-no">359</span><span id="line-359"> public void flattenOneSegment(long requesterVersion, MemStoreCompactionStrategy.Action action) {</span> |
| <span class="source-line-no">360</span><span id="line-360"> pipeline.flattenOneSegment(requesterVersion, indexType, action);</span> |
| <span class="source-line-no">361</span><span id="line-361"> }</span> |
| <span class="source-line-no">362</span><span id="line-362"></span> |
| <span class="source-line-no">363</span><span id="line-363"> // setter is used only for testability</span> |
| <span class="source-line-no">364</span><span id="line-364"> void setIndexType(IndexType type) {</span> |
| <span class="source-line-no">365</span><span id="line-365"> indexType = type;</span> |
| <span class="source-line-no">366</span><span id="line-366"> // Because this functionality is for testing only and tests are setting in-memory flush size</span> |
| <span class="source-line-no">367</span><span id="line-367"> // according to their need, there is no setting of in-memory flush size, here.</span> |
| <span class="source-line-no">368</span><span id="line-368"> // If it is needed, please change in-memory flush size explicitly</span> |
| <span class="source-line-no">369</span><span id="line-369"> }</span> |
| <span class="source-line-no">370</span><span id="line-370"></span> |
| <span class="source-line-no">371</span><span id="line-371"> public IndexType getIndexType() {</span> |
| <span class="source-line-no">372</span><span id="line-372"> return indexType;</span> |
| <span class="source-line-no">373</span><span id="line-373"> }</span> |
| <span class="source-line-no">374</span><span id="line-374"></span> |
| <span class="source-line-no">375</span><span id="line-375"> public boolean hasImmutableSegments() {</span> |
| <span class="source-line-no">376</span><span id="line-376"> return !pipeline.isEmpty();</span> |
| <span class="source-line-no">377</span><span id="line-377"> }</span> |
| <span class="source-line-no">378</span><span id="line-378"></span> |
| <span class="source-line-no">379</span><span id="line-379"> public VersionedSegmentsList getImmutableSegments() {</span> |
| <span class="source-line-no">380</span><span id="line-380"> return pipeline.getVersionedList();</span> |
| <span class="source-line-no">381</span><span id="line-381"> }</span> |
| <span class="source-line-no">382</span><span id="line-382"></span> |
| <span class="source-line-no">383</span><span id="line-383"> public long getSmallestReadPoint() {</span> |
| <span class="source-line-no">384</span><span id="line-384"> return store.getSmallestReadPoint();</span> |
| <span class="source-line-no">385</span><span id="line-385"> }</span> |
| <span class="source-line-no">386</span><span id="line-386"></span> |
| <span class="source-line-no">387</span><span id="line-387"> public HStore getStore() {</span> |
| <span class="source-line-no">388</span><span id="line-388"> return store;</span> |
| <span class="source-line-no">389</span><span id="line-389"> }</span> |
| <span class="source-line-no">390</span><span id="line-390"></span> |
| <span class="source-line-no">391</span><span id="line-391"> public String getFamilyName() {</span> |
| <span class="source-line-no">392</span><span id="line-392"> return Bytes.toString(getFamilyNameInBytes());</span> |
| <span class="source-line-no">393</span><span id="line-393"> }</span> |
| <span class="source-line-no">394</span><span id="line-394"></span> |
| <span class="source-line-no">395</span><span id="line-395"> /**</span> |
| <span class="source-line-no">396</span><span id="line-396"> * This method is protected under {@link HStore#lock} read lock.</span> |
| <span class="source-line-no">397</span><span id="line-397"> */</span> |
| <span class="source-line-no">398</span><span id="line-398"> @Override</span> |
| <span class="source-line-no">399</span><span id="line-399"> public List<KeyValueScanner> getScanners(long readPt) throws IOException {</span> |
| <span class="source-line-no">400</span><span id="line-400"> MutableSegment activeTmp = getActive();</span> |
| <span class="source-line-no">401</span><span id="line-401"> List<? extends Segment> pipelineList = pipeline.getSegments();</span> |
| <span class="source-line-no">402</span><span id="line-402"> List<? extends Segment> snapshotList = snapshot.getAllSegments();</span> |
| <span class="source-line-no">403</span><span id="line-403"> long numberOfSegments = 1L + pipelineList.size() + snapshotList.size();</span> |
| <span class="source-line-no">404</span><span id="line-404"> // The list of elements in pipeline + the active element + the snapshot segment</span> |
| <span class="source-line-no">405</span><span id="line-405"> List<KeyValueScanner> list = createList((int) numberOfSegments);</span> |
| <span class="source-line-no">406</span><span id="line-406"> addToScanners(activeTmp, readPt, list);</span> |
| <span class="source-line-no">407</span><span id="line-407"> addToScanners(pipelineList, readPt, list);</span> |
| <span class="source-line-no">408</span><span id="line-408"> addToScanners(snapshotList, readPt, list);</span> |
| <span class="source-line-no">409</span><span id="line-409"> return list;</span> |
| <span class="source-line-no">410</span><span id="line-410"> }</span> |
| <span class="source-line-no">411</span><span id="line-411"></span> |
| <span class="source-line-no">412</span><span id="line-412"> protected List<KeyValueScanner> createList(int capacity) {</span> |
| <span class="source-line-no">413</span><span id="line-413"> return new ArrayList<>(capacity);</span> |
| <span class="source-line-no">414</span><span id="line-414"> }</span> |
| <span class="source-line-no">415</span><span id="line-415"></span> |
| <span class="source-line-no">416</span><span id="line-416"> /**</span> |
| <span class="source-line-no">417</span><span id="line-417"> * Check whether anything need to be done based on the current active set size. The method is</span> |
| <span class="source-line-no">418</span><span id="line-418"> * invoked upon every addition to the active set. For CompactingMemStore, flush the active set to</span> |
| <span class="source-line-no">419</span><span id="line-419"> * the read-only memory if it's size is above threshold</span> |
| <span class="source-line-no">420</span><span id="line-420"> * @param currActive intended segment to update</span> |
| <span class="source-line-no">421</span><span id="line-421"> * @param cellToAdd cell to be added to the segment</span> |
| <span class="source-line-no">422</span><span id="line-422"> * @param memstoreSizing object to accumulate changed size</span> |
| <span class="source-line-no">423</span><span id="line-423"> * @return true if the cell can be added to the currActive</span> |
| <span class="source-line-no">424</span><span id="line-424"> */</span> |
| <span class="source-line-no">425</span><span id="line-425"> protected boolean checkAndAddToActiveSize(MutableSegment currActive, Cell cellToAdd,</span> |
| <span class="source-line-no">426</span><span id="line-426"> MemStoreSizing memstoreSizing) {</span> |
| <span class="source-line-no">427</span><span id="line-427"> long cellSize = MutableSegment.getCellLength(cellToAdd);</span> |
| <span class="source-line-no">428</span><span id="line-428"> boolean successAdd = false;</span> |
| <span class="source-line-no">429</span><span id="line-429"> while (true) {</span> |
| <span class="source-line-no">430</span><span id="line-430"> long segmentDataSize = currActive.getDataSize();</span> |
| <span class="source-line-no">431</span><span id="line-431"> if (!inWalReplay && segmentDataSize > inmemoryFlushSize) {</span> |
| <span class="source-line-no">432</span><span id="line-432"> // when replaying edits from WAL there is no need in in-memory flush regardless the size</span> |
| <span class="source-line-no">433</span><span id="line-433"> // otherwise size below flush threshold try to update atomically</span> |
| <span class="source-line-no">434</span><span id="line-434"> break;</span> |
| <span class="source-line-no">435</span><span id="line-435"> }</span> |
| <span class="source-line-no">436</span><span id="line-436"> if (currActive.compareAndSetDataSize(segmentDataSize, segmentDataSize + cellSize)) {</span> |
| <span class="source-line-no">437</span><span id="line-437"> if (memstoreSizing != null) {</span> |
| <span class="source-line-no">438</span><span id="line-438"> memstoreSizing.incMemStoreSize(cellSize, 0, 0, 0);</span> |
| <span class="source-line-no">439</span><span id="line-439"> }</span> |
| <span class="source-line-no">440</span><span id="line-440"> successAdd = true;</span> |
| <span class="source-line-no">441</span><span id="line-441"> break;</span> |
| <span class="source-line-no">442</span><span id="line-442"> }</span> |
| <span class="source-line-no">443</span><span id="line-443"> }</span> |
| <span class="source-line-no">444</span><span id="line-444"></span> |
| <span class="source-line-no">445</span><span id="line-445"> if (!inWalReplay && currActive.getDataSize() > inmemoryFlushSize) {</span> |
| <span class="source-line-no">446</span><span id="line-446"> // size above flush threshold so we flush in memory</span> |
| <span class="source-line-no">447</span><span id="line-447"> this.tryFlushInMemoryAndCompactingAsync(currActive);</span> |
| <span class="source-line-no">448</span><span id="line-448"> }</span> |
| <span class="source-line-no">449</span><span id="line-449"> return successAdd;</span> |
| <span class="source-line-no">450</span><span id="line-450"> }</span> |
| <span class="source-line-no">451</span><span id="line-451"></span> |
| <span class="source-line-no">452</span><span id="line-452"> /**</span> |
| <span class="source-line-no">453</span><span id="line-453"> * Try to flush the currActive in memory and submit the background</span> |
| <span class="source-line-no">454</span><span id="line-454"> * {@link InMemoryCompactionRunnable} to</span> |
| <span class="source-line-no">455</span><span id="line-455"> * {@link RegionServicesForStores#getInMemoryCompactionPool()}. Just one thread can do the actual</span> |
| <span class="source-line-no">456</span><span id="line-456"> * flushing in memory.</span> |
| <span class="source-line-no">457</span><span id="line-457"> * @param currActive current Active Segment to be flush in memory.</span> |
| <span class="source-line-no">458</span><span id="line-458"> */</span> |
| <span class="source-line-no">459</span><span id="line-459"> private void tryFlushInMemoryAndCompactingAsync(MutableSegment currActive) {</span> |
| <span class="source-line-no">460</span><span id="line-460"> if (currActive.setInMemoryFlushed()) {</span> |
| <span class="source-line-no">461</span><span id="line-461"> flushInMemory(currActive);</span> |
| <span class="source-line-no">462</span><span id="line-462"> if (setInMemoryCompactionFlag()) {</span> |
| <span class="source-line-no">463</span><span id="line-463"> // The thread is dispatched to do in-memory compaction in the background</span> |
| <span class="source-line-no">464</span><span id="line-464"> InMemoryCompactionRunnable runnable = new InMemoryCompactionRunnable();</span> |
| <span class="source-line-no">465</span><span id="line-465"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">466</span><span id="line-466"> LOG.trace(</span> |
| <span class="source-line-no">467</span><span id="line-467"> "Dispatching the MemStore in-memory flush for store " + store.getColumnFamilyName());</span> |
| <span class="source-line-no">468</span><span id="line-468"> }</span> |
| <span class="source-line-no">469</span><span id="line-469"> getPool().execute(runnable);</span> |
| <span class="source-line-no">470</span><span id="line-470"> }</span> |
| <span class="source-line-no">471</span><span id="line-471"> }</span> |
| <span class="source-line-no">472</span><span id="line-472"> }</span> |
| <span class="source-line-no">473</span><span id="line-473"></span> |
| <span class="source-line-no">474</span><span id="line-474"> // externally visible only for tests</span> |
| <span class="source-line-no">475</span><span id="line-475"> // when invoked directly from tests it must be verified that the caller doesn't hold updatesLock,</span> |
| <span class="source-line-no">476</span><span id="line-476"> // otherwise there is a deadlock</span> |
| <span class="source-line-no">477</span><span id="line-477"> void flushInMemory() {</span> |
| <span class="source-line-no">478</span><span id="line-478"> MutableSegment currActive = getActive();</span> |
| <span class="source-line-no">479</span><span id="line-479"> if (currActive.setInMemoryFlushed()) {</span> |
| <span class="source-line-no">480</span><span id="line-480"> flushInMemory(currActive);</span> |
| <span class="source-line-no">481</span><span id="line-481"> }</span> |
| <span class="source-line-no">482</span><span id="line-482"> inMemoryCompaction();</span> |
| <span class="source-line-no">483</span><span id="line-483"> }</span> |
| <span class="source-line-no">484</span><span id="line-484"></span> |
| <span class="source-line-no">485</span><span id="line-485"> protected void flushInMemory(MutableSegment currActive) {</span> |
| <span class="source-line-no">486</span><span id="line-486"> LOG.trace("IN-MEMORY FLUSH: Pushing active segment into compaction pipeline");</span> |
| <span class="source-line-no">487</span><span id="line-487"> // NOTE: Due to concurrent writes and because we first add cell size to currActive.getDataSize</span> |
| <span class="source-line-no">488</span><span id="line-488"> // and then actually add cell to currActive.cellSet, it is possible that</span> |
| <span class="source-line-no">489</span><span id="line-489"> // currActive.getDataSize could not accommodate cellToAdd but currActive.cellSet is still</span> |
| <span class="source-line-no">490</span><span id="line-490"> // empty if pending writes which not yet add cells to currActive.cellSet.</span> |
| <span class="source-line-no">491</span><span id="line-491"> // so here we should not check currActive.isEmpty or not.</span> |
| <span class="source-line-no">492</span><span id="line-492"> pushActiveToPipeline(currActive, false);</span> |
| <span class="source-line-no">493</span><span id="line-493"> }</span> |
| <span class="source-line-no">494</span><span id="line-494"></span> |
| <span class="source-line-no">495</span><span id="line-495"> void inMemoryCompaction() {</span> |
| <span class="source-line-no">496</span><span id="line-496"> // setting the inMemoryCompactionInProgress flag again for the case this method is invoked</span> |
| <span class="source-line-no">497</span><span id="line-497"> // directly (only in tests) in the common path setting from true to true is idempotent</span> |
| <span class="source-line-no">498</span><span id="line-498"> inMemoryCompactionInProgress.set(true);</span> |
| <span class="source-line-no">499</span><span id="line-499"> // Used by tests</span> |
| <span class="source-line-no">500</span><span id="line-500"> if (!allowCompaction.get()) {</span> |
| <span class="source-line-no">501</span><span id="line-501"> return;</span> |
| <span class="source-line-no">502</span><span id="line-502"> }</span> |
| <span class="source-line-no">503</span><span id="line-503"> try {</span> |
| <span class="source-line-no">504</span><span id="line-504"> // Speculative compaction execution, may be interrupted if flush is forced while</span> |
| <span class="source-line-no">505</span><span id="line-505"> // compaction is in progress</span> |
| <span class="source-line-no">506</span><span id="line-506"> if (!compactor.start()) {</span> |
| <span class="source-line-no">507</span><span id="line-507"> setInMemoryCompactionCompleted();</span> |
| <span class="source-line-no">508</span><span id="line-508"> }</span> |
| <span class="source-line-no">509</span><span id="line-509"> } catch (IOException e) {</span> |
| <span class="source-line-no">510</span><span id="line-510"> LOG.warn("Unable to run in-memory compaction on {}/{}; exception={}",</span> |
| <span class="source-line-no">511</span><span id="line-511"> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName(), e);</span> |
| <span class="source-line-no">512</span><span id="line-512"> }</span> |
| <span class="source-line-no">513</span><span id="line-513"> }</span> |
| <span class="source-line-no">514</span><span id="line-514"></span> |
| <span class="source-line-no">515</span><span id="line-515"> private Segment getLastSegment() {</span> |
| <span class="source-line-no">516</span><span id="line-516"> Segment localActive = getActive();</span> |
| <span class="source-line-no">517</span><span id="line-517"> Segment tail = pipeline.getTail();</span> |
| <span class="source-line-no">518</span><span id="line-518"> return tail == null ? localActive : tail;</span> |
| <span class="source-line-no">519</span><span id="line-519"> }</span> |
| <span class="source-line-no">520</span><span id="line-520"></span> |
| <span class="source-line-no">521</span><span id="line-521"> private byte[] getFamilyNameInBytes() {</span> |
| <span class="source-line-no">522</span><span id="line-522"> return store.getColumnFamilyDescriptor().getName();</span> |
| <span class="source-line-no">523</span><span id="line-523"> }</span> |
| <span class="source-line-no">524</span><span id="line-524"></span> |
| <span class="source-line-no">525</span><span id="line-525"> private ThreadPoolExecutor getPool() {</span> |
| <span class="source-line-no">526</span><span id="line-526"> return getRegionServices().getInMemoryCompactionPool();</span> |
| <span class="source-line-no">527</span><span id="line-527"> }</span> |
| <span class="source-line-no">528</span><span id="line-528"></span> |
| <span class="source-line-no">529</span><span id="line-529"> /**</span> |
| <span class="source-line-no">530</span><span id="line-530"> * The request to cancel the compaction asynchronous task (caused by in-memory flush) The</span> |
| <span class="source-line-no">531</span><span id="line-531"> * compaction may still happen if the request was sent too late Non-blocking request</span> |
| <span class="source-line-no">532</span><span id="line-532"> */</span> |
| <span class="source-line-no">533</span><span id="line-533"> private void stopCompaction() {</span> |
| <span class="source-line-no">534</span><span id="line-534"> if (inMemoryCompactionInProgress.get()) {</span> |
| <span class="source-line-no">535</span><span id="line-535"> compactor.stop();</span> |
| <span class="source-line-no">536</span><span id="line-536"> }</span> |
| <span class="source-line-no">537</span><span id="line-537"> }</span> |
| <span class="source-line-no">538</span><span id="line-538"></span> |
| <span class="source-line-no">539</span><span id="line-539"> /**</span> |
| <span class="source-line-no">540</span><span id="line-540"> * NOTE: When {@link CompactingMemStore#flushInMemory(MutableSegment)} calls this method, due to</span> |
| <span class="source-line-no">541</span><span id="line-541"> * concurrent writes and because we first add cell size to currActive.getDataSize and then</span> |
| <span class="source-line-no">542</span><span id="line-542"> * actually add cell to currActive.cellSet, it is possible that currActive.getDataSize could not</span> |
| <span class="source-line-no">543</span><span id="line-543"> * accommodate cellToAdd but currActive.cellSet is still empty if pending writes which not yet add</span> |
| <span class="source-line-no">544</span><span id="line-544"> * cells to currActive.cellSet,so for</span> |
| <span class="source-line-no">545</span><span id="line-545"> * {@link CompactingMemStore#flushInMemory(MutableSegment)},checkEmpty parameter is false. But if</span> |
| <span class="source-line-no">546</span><span id="line-546"> * {@link CompactingMemStore#snapshot} called this method,because there is no pending</span> |
| <span class="source-line-no">547</span><span id="line-547"> * write,checkEmpty parameter could be true.</span> |
| <span class="source-line-no">548</span><span id="line-548"> */</span> |
| <span class="source-line-no">549</span><span id="line-549"> protected void pushActiveToPipeline(MutableSegment currActive, boolean checkEmpty) {</span> |
| <span class="source-line-no">550</span><span id="line-550"> if (!checkEmpty || !currActive.isEmpty()) {</span> |
| <span class="source-line-no">551</span><span id="line-551"> pipeline.pushHead(currActive);</span> |
| <span class="source-line-no">552</span><span id="line-552"> resetActive();</span> |
| <span class="source-line-no">553</span><span id="line-553"> }</span> |
| <span class="source-line-no">554</span><span id="line-554"> }</span> |
| <span class="source-line-no">555</span><span id="line-555"></span> |
| <span class="source-line-no">556</span><span id="line-556"> private void pushTailToSnapshot() {</span> |
| <span class="source-line-no">557</span><span id="line-557"> VersionedSegmentsList segments = pipeline.getVersionedTail();</span> |
| <span class="source-line-no">558</span><span id="line-558"> pushToSnapshot(segments.getStoreSegments());</span> |
| <span class="source-line-no">559</span><span id="line-559"> // In Swap: don't close segments (they are in snapshot now) and don't update the region size</span> |
| <span class="source-line-no">560</span><span id="line-560"> pipeline.swap(segments, null, false, false);</span> |
| <span class="source-line-no">561</span><span id="line-561"> }</span> |
| <span class="source-line-no">562</span><span id="line-562"></span> |
| <span class="source-line-no">563</span><span id="line-563"> private void pushPipelineToSnapshot() {</span> |
| <span class="source-line-no">564</span><span id="line-564"> int iterationsCnt = 0;</span> |
| <span class="source-line-no">565</span><span id="line-565"> boolean done = false;</span> |
| <span class="source-line-no">566</span><span id="line-566"> while (!done) {</span> |
| <span class="source-line-no">567</span><span id="line-567"> iterationsCnt++;</span> |
| <span class="source-line-no">568</span><span id="line-568"> VersionedSegmentsList segments = getImmutableSegments();</span> |
| <span class="source-line-no">569</span><span id="line-569"> pushToSnapshot(segments.getStoreSegments());</span> |
| <span class="source-line-no">570</span><span id="line-570"> // swap can return false in case the pipeline was updated by ongoing compaction</span> |
| <span class="source-line-no">571</span><span id="line-571"> // and the version increase, the chance of it happenning is very low</span> |
| <span class="source-line-no">572</span><span id="line-572"> // In Swap: don't close segments (they are in snapshot now) and don't update the region size</span> |
| <span class="source-line-no">573</span><span id="line-573"> done = swapPipelineWithNull(segments);</span> |
| <span class="source-line-no">574</span><span id="line-574"> if (iterationsCnt > 2) {</span> |
| <span class="source-line-no">575</span><span id="line-575"> // practically it is impossible that this loop iterates more than two times</span> |
| <span class="source-line-no">576</span><span id="line-576"> // (because the compaction is stopped and none restarts it while in snapshot request),</span> |
| <span class="source-line-no">577</span><span id="line-577"> // however stopping here for the case of the infinite loop causing by any error</span> |
| <span class="source-line-no">578</span><span id="line-578"> LOG.warn("Multiple unsuccessful attempts to push the compaction pipeline to snapshot,"</span> |
| <span class="source-line-no">579</span><span id="line-579"> + " while flushing to disk.");</span> |
| <span class="source-line-no">580</span><span id="line-580"> this.snapshot = SegmentFactory.instance().createImmutableSegment(getComparator());</span> |
| <span class="source-line-no">581</span><span id="line-581"> break;</span> |
| <span class="source-line-no">582</span><span id="line-582"> }</span> |
| <span class="source-line-no">583</span><span id="line-583"> }</span> |
| <span class="source-line-no">584</span><span id="line-584"> }</span> |
| <span class="source-line-no">585</span><span id="line-585"></span> |
| <span class="source-line-no">586</span><span id="line-586"> protected boolean swapPipelineWithNull(VersionedSegmentsList segments) {</span> |
| <span class="source-line-no">587</span><span id="line-587"> return pipeline.swap(segments, null, false, false);</span> |
| <span class="source-line-no">588</span><span id="line-588"> }</span> |
| <span class="source-line-no">589</span><span id="line-589"></span> |
| <span class="source-line-no">590</span><span id="line-590"> private void pushToSnapshot(List<ImmutableSegment> segments) {</span> |
| <span class="source-line-no">591</span><span id="line-591"> if (segments.isEmpty()) return;</span> |
| <span class="source-line-no">592</span><span id="line-592"> if (segments.size() == 1 && !segments.get(0).isEmpty()) {</span> |
| <span class="source-line-no">593</span><span id="line-593"> this.snapshot = segments.get(0);</span> |
| <span class="source-line-no">594</span><span id="line-594"> return;</span> |
| <span class="source-line-no">595</span><span id="line-595"> } else { // create composite snapshot</span> |
| <span class="source-line-no">596</span><span id="line-596"> this.snapshot =</span> |
| <span class="source-line-no">597</span><span id="line-597"> SegmentFactory.instance().createCompositeImmutableSegment(getComparator(), segments);</span> |
| <span class="source-line-no">598</span><span id="line-598"> }</span> |
| <span class="source-line-no">599</span><span id="line-599"> }</span> |
| <span class="source-line-no">600</span><span id="line-600"></span> |
| <span class="source-line-no">601</span><span id="line-601"> private RegionServicesForStores getRegionServices() {</span> |
| <span class="source-line-no">602</span><span id="line-602"> return regionServices;</span> |
| <span class="source-line-no">603</span><span id="line-603"> }</span> |
| <span class="source-line-no">604</span><span id="line-604"></span> |
| <span class="source-line-no">605</span><span id="line-605"> /**</span> |
| <span class="source-line-no">606</span><span id="line-606"> * The in-memory-flusher thread performs the flush asynchronously. There is at most one thread per</span> |
| <span class="source-line-no">607</span><span id="line-607"> * memstore instance. It takes the updatesLock exclusively, pushes active into the pipeline,</span> |
| <span class="source-line-no">608</span><span id="line-608"> * releases updatesLock and compacts the pipeline.</span> |
| <span class="source-line-no">609</span><span id="line-609"> */</span> |
| <span class="source-line-no">610</span><span id="line-610"> private class InMemoryCompactionRunnable implements Runnable {</span> |
| <span class="source-line-no">611</span><span id="line-611"> @Override</span> |
| <span class="source-line-no">612</span><span id="line-612"> public void run() {</span> |
| <span class="source-line-no">613</span><span id="line-613"> inMemoryCompaction();</span> |
| <span class="source-line-no">614</span><span id="line-614"> }</span> |
| <span class="source-line-no">615</span><span id="line-615"> }</span> |
| <span class="source-line-no">616</span><span id="line-616"></span> |
| <span class="source-line-no">617</span><span id="line-617"> boolean isMemStoreFlushingInMemory() {</span> |
| <span class="source-line-no">618</span><span id="line-618"> return inMemoryCompactionInProgress.get();</span> |
| <span class="source-line-no">619</span><span id="line-619"> }</span> |
| <span class="source-line-no">620</span><span id="line-620"></span> |
| <span class="source-line-no">621</span><span id="line-621"> /**</span> |
| <span class="source-line-no">622</span><span id="line-622"> * @param cell Find the row that comes after this one. If null, we return the first.</span> |
| <span class="source-line-no">623</span><span id="line-623"> * @return Next row or null if none found.</span> |
| <span class="source-line-no">624</span><span id="line-624"> */</span> |
| <span class="source-line-no">625</span><span id="line-625"> ExtendedCell getNextRow(final ExtendedCell cell) {</span> |
| <span class="source-line-no">626</span><span id="line-626"> ExtendedCell lowest = null;</span> |
| <span class="source-line-no">627</span><span id="line-627"> List<Segment> segments = getSegments();</span> |
| <span class="source-line-no">628</span><span id="line-628"> for (Segment segment : segments) {</span> |
| <span class="source-line-no">629</span><span id="line-629"> if (lowest == null) {</span> |
| <span class="source-line-no">630</span><span id="line-630"> lowest = getNextRow(cell, segment.getCellSet());</span> |
| <span class="source-line-no">631</span><span id="line-631"> } else {</span> |
| <span class="source-line-no">632</span><span id="line-632"> lowest = getLowest(lowest, getNextRow(cell, segment.getCellSet()));</span> |
| <span class="source-line-no">633</span><span id="line-633"> }</span> |
| <span class="source-line-no">634</span><span id="line-634"> }</span> |
| <span class="source-line-no">635</span><span id="line-635"> return lowest;</span> |
| <span class="source-line-no">636</span><span id="line-636"> }</span> |
| <span class="source-line-no">637</span><span id="line-637"></span> |
| <span class="source-line-no">638</span><span id="line-638"> long getInmemoryFlushSize() {</span> |
| <span class="source-line-no">639</span><span id="line-639"> return inmemoryFlushSize;</span> |
| <span class="source-line-no">640</span><span id="line-640"> }</span> |
| <span class="source-line-no">641</span><span id="line-641"></span> |
| <span class="source-line-no">642</span><span id="line-642"> // debug method</span> |
| <span class="source-line-no">643</span><span id="line-643"> public void debug() {</span> |
| <span class="source-line-no">644</span><span id="line-644"> String msg = "active size=" + getActive().getDataSize();</span> |
| <span class="source-line-no">645</span><span id="line-645"> msg += " allow compaction is " + (allowCompaction.get() ? "true" : "false");</span> |
| <span class="source-line-no">646</span><span id="line-646"> msg +=</span> |
| <span class="source-line-no">647</span><span id="line-647"> " inMemoryCompactionInProgress is " + (inMemoryCompactionInProgress.get() ? "true" : "false");</span> |
| <span class="source-line-no">648</span><span id="line-648"> LOG.debug(msg);</span> |
| <span class="source-line-no">649</span><span id="line-649"> }</span> |
| <span class="source-line-no">650</span><span id="line-650"></span> |
| <span class="source-line-no">651</span><span id="line-651">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
