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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.AbstractList;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.ArrayList;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Collection;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.List;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.Map;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.NavigableSet;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.Optional;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.concurrent.ConcurrentHashMap;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.Cell;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.CellComparator;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.CellUtil;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.PrivateCellUtil;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.UnknownScannerException;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.client.ClientInternalHelper;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.client.IsolationLevel;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.client.Scan;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.filter.FilterWrapper;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.filter.IncompatibleFilterException;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.ipc.CallerDisconnectedException;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.ipc.RpcCall;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.ipc.RpcCallback;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.ipc.RpcServer;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.regionserver.Region.Operation;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.regionserver.ScannerContext.NextState;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.trace.TraceUtil;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.slf4j.Logger;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">055</span><span id="line-55"></span> |
| <span class="source-line-no">056</span><span id="line-56">import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58">/**</span> |
| <span class="source-line-no">059</span><span id="line-59"> * RegionScannerImpl is used to combine scanners from multiple Stores (aka column families).</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61">@InterfaceAudience.Private</span> |
| <span class="source-line-no">062</span><span id="line-62">class RegionScannerImpl implements RegionScanner, Shipper, RpcCallback {</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> private static final Logger LOG = LoggerFactory.getLogger(RegionScannerImpl.class);</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> // Package local for testability</span> |
| <span class="source-line-no">067</span><span id="line-67"> KeyValueHeap storeHeap = null;</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> /**</span> |
| <span class="source-line-no">070</span><span id="line-70"> * Heap of key-values that are not essential for the provided filters and are thus read on demand,</span> |
| <span class="source-line-no">071</span><span id="line-71"> * if on-demand column family loading is enabled.</span> |
| <span class="source-line-no">072</span><span id="line-72"> */</span> |
| <span class="source-line-no">073</span><span id="line-73"> KeyValueHeap joinedHeap = null;</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> /**</span> |
| <span class="source-line-no">076</span><span id="line-76"> * If the joined heap data gathering is interrupted due to scan limits, this will contain the row</span> |
| <span class="source-line-no">077</span><span id="line-77"> * for which we are populating the values.</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 ExtendedCell joinedContinuationRow = null;</span> |
| <span class="source-line-no">080</span><span id="line-80"> private boolean filterClosed = false;</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> protected final byte[] stopRow;</span> |
| <span class="source-line-no">083</span><span id="line-83"> protected final boolean includeStopRow;</span> |
| <span class="source-line-no">084</span><span id="line-84"> protected final HRegion region;</span> |
| <span class="source-line-no">085</span><span id="line-85"> protected final CellComparator comparator;</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> private final ConcurrentHashMap<RegionScanner, Long> scannerReadPoints;</span> |
| <span class="source-line-no">088</span><span id="line-88"></span> |
| <span class="source-line-no">089</span><span id="line-89"> private final long readPt;</span> |
| <span class="source-line-no">090</span><span id="line-90"> private final long maxResultSize;</span> |
| <span class="source-line-no">091</span><span id="line-91"> private final ScannerContext defaultScannerContext;</span> |
| <span class="source-line-no">092</span><span id="line-92"> private final FilterWrapper filter;</span> |
| <span class="source-line-no">093</span><span id="line-93"> private final String operationId;</span> |
| <span class="source-line-no">094</span><span id="line-94"></span> |
| <span class="source-line-no">095</span><span id="line-95"> private RegionServerServices rsServices;</span> |
| <span class="source-line-no">096</span><span id="line-96"></span> |
| <span class="source-line-no">097</span><span id="line-97"> @Override</span> |
| <span class="source-line-no">098</span><span id="line-98"> public RegionInfo getRegionInfo() {</span> |
| <span class="source-line-no">099</span><span id="line-99"> return region.getRegionInfo();</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"></span> |
| <span class="source-line-no">102</span><span id="line-102"> private static boolean hasNonce(HRegion region, long nonce) {</span> |
| <span class="source-line-no">103</span><span id="line-103"> RegionServerServices rsServices = region.getRegionServerServices();</span> |
| <span class="source-line-no">104</span><span id="line-104"> return nonce != HConstants.NO_NONCE && rsServices != null</span> |
| <span class="source-line-no">105</span><span id="line-105"> && rsServices.getNonceManager() != null;</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> RegionScannerImpl(Scan scan, List<KeyValueScanner> additionalScanners, HRegion region,</span> |
| <span class="source-line-no">109</span><span id="line-109"> long nonceGroup, long nonce) throws IOException {</span> |
| <span class="source-line-no">110</span><span id="line-110"> this.region = region;</span> |
| <span class="source-line-no">111</span><span id="line-111"> this.maxResultSize = scan.getMaxResultSize();</span> |
| <span class="source-line-no">112</span><span id="line-112"> if (scan.hasFilter()) {</span> |
| <span class="source-line-no">113</span><span id="line-113"> this.filter = new FilterWrapper(scan.getFilter());</span> |
| <span class="source-line-no">114</span><span id="line-114"> } else {</span> |
| <span class="source-line-no">115</span><span id="line-115"> this.filter = null;</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"> this.comparator = region.getCellComparator();</span> |
| <span class="source-line-no">118</span><span id="line-118"> /**</span> |
| <span class="source-line-no">119</span><span id="line-119"> * By default, calls to next/nextRaw must enforce the batch limit. Thus, construct a default</span> |
| <span class="source-line-no">120</span><span id="line-120"> * scanner context that can be used to enforce the batch limit in the event that a</span> |
| <span class="source-line-no">121</span><span id="line-121"> * ScannerContext is not specified during an invocation of next/nextRaw</span> |
| <span class="source-line-no">122</span><span id="line-122"> */</span> |
| <span class="source-line-no">123</span><span id="line-123"> defaultScannerContext = ScannerContext.newBuilder().setBatchLimit(scan.getBatch()).build();</span> |
| <span class="source-line-no">124</span><span id="line-124"> this.stopRow = scan.getStopRow();</span> |
| <span class="source-line-no">125</span><span id="line-125"> this.includeStopRow = scan.includeStopRow();</span> |
| <span class="source-line-no">126</span><span id="line-126"> this.operationId = scan.getId();</span> |
| <span class="source-line-no">127</span><span id="line-127"></span> |
| <span class="source-line-no">128</span><span id="line-128"> // synchronize on scannerReadPoints so that nobody calculates</span> |
| <span class="source-line-no">129</span><span id="line-129"> // getSmallestReadPoint, before scannerReadPoints is updated.</span> |
| <span class="source-line-no">130</span><span id="line-130"> IsolationLevel isolationLevel = scan.getIsolationLevel();</span> |
| <span class="source-line-no">131</span><span id="line-131"> long mvccReadPoint = ClientInternalHelper.getMvccReadPoint(scan);</span> |
| <span class="source-line-no">132</span><span id="line-132"> this.scannerReadPoints = region.scannerReadPoints;</span> |
| <span class="source-line-no">133</span><span id="line-133"> this.rsServices = region.getRegionServerServices();</span> |
| <span class="source-line-no">134</span><span id="line-134"> region.smallestReadPointCalcLock.lock(ReadPointCalculationLock.LockType.RECORDING_LOCK);</span> |
| <span class="source-line-no">135</span><span id="line-135"> try {</span> |
| <span class="source-line-no">136</span><span id="line-136"> if (mvccReadPoint > 0) {</span> |
| <span class="source-line-no">137</span><span id="line-137"> this.readPt = mvccReadPoint;</span> |
| <span class="source-line-no">138</span><span id="line-138"> } else if (hasNonce(region, nonce)) {</span> |
| <span class="source-line-no">139</span><span id="line-139"> this.readPt = rsServices.getNonceManager().getMvccFromOperationContext(nonceGroup, nonce);</span> |
| <span class="source-line-no">140</span><span id="line-140"> } else {</span> |
| <span class="source-line-no">141</span><span id="line-141"> this.readPt = region.getReadPoint(isolationLevel);</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143"> scannerReadPoints.put(this, this.readPt);</span> |
| <span class="source-line-no">144</span><span id="line-144"> } finally {</span> |
| <span class="source-line-no">145</span><span id="line-145"> region.smallestReadPointCalcLock.unlock(ReadPointCalculationLock.LockType.RECORDING_LOCK);</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"> initializeScanners(scan, additionalScanners);</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"> private void initializeScanners(Scan scan, List<KeyValueScanner> additionalScanners)</span> |
| <span class="source-line-no">151</span><span id="line-151"> throws IOException {</span> |
| <span class="source-line-no">152</span><span id="line-152"> // Here we separate all scanners into two lists - scanner that provide data required</span> |
| <span class="source-line-no">153</span><span id="line-153"> // by the filter to operate (scanners list) and all others (joinedScanners list).</span> |
| <span class="source-line-no">154</span><span id="line-154"> List<KeyValueScanner> scanners = new ArrayList<>(scan.getFamilyMap().size());</span> |
| <span class="source-line-no">155</span><span id="line-155"> List<KeyValueScanner> joinedScanners = new ArrayList<>(scan.getFamilyMap().size());</span> |
| <span class="source-line-no">156</span><span id="line-156"> // Store all already instantiated scanners for exception handling</span> |
| <span class="source-line-no">157</span><span id="line-157"> List<KeyValueScanner> instantiatedScanners = new ArrayList<>();</span> |
| <span class="source-line-no">158</span><span id="line-158"> // handle additionalScanners</span> |
| <span class="source-line-no">159</span><span id="line-159"> if (additionalScanners != null && !additionalScanners.isEmpty()) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> scanners.addAll(additionalScanners);</span> |
| <span class="source-line-no">161</span><span id="line-161"> instantiatedScanners.addAll(additionalScanners);</span> |
| <span class="source-line-no">162</span><span id="line-162"> }</span> |
| <span class="source-line-no">163</span><span id="line-163"></span> |
| <span class="source-line-no">164</span><span id="line-164"> try {</span> |
| <span class="source-line-no">165</span><span id="line-165"> for (Map.Entry<byte[], NavigableSet<byte[]>> entry : scan.getFamilyMap().entrySet()) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> HStore store = region.getStore(entry.getKey());</span> |
| <span class="source-line-no">167</span><span id="line-167"> KeyValueScanner scanner = store.getScanner(scan, entry.getValue(), this.readPt);</span> |
| <span class="source-line-no">168</span><span id="line-168"> instantiatedScanners.add(scanner);</span> |
| <span class="source-line-no">169</span><span id="line-169"> if (</span> |
| <span class="source-line-no">170</span><span id="line-170"> this.filter == null || !scan.doLoadColumnFamiliesOnDemand()</span> |
| <span class="source-line-no">171</span><span id="line-171"> || this.filter.isFamilyEssential(entry.getKey())</span> |
| <span class="source-line-no">172</span><span id="line-172"> ) {</span> |
| <span class="source-line-no">173</span><span id="line-173"> scanners.add(scanner);</span> |
| <span class="source-line-no">174</span><span id="line-174"> } else {</span> |
| <span class="source-line-no">175</span><span id="line-175"> joinedScanners.add(scanner);</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> }</span> |
| <span class="source-line-no">178</span><span id="line-178"> initializeKVHeap(scanners, joinedScanners, region);</span> |
| <span class="source-line-no">179</span><span id="line-179"> } catch (Throwable t) {</span> |
| <span class="source-line-no">180</span><span id="line-180"> throw handleException(instantiatedScanners, t);</span> |
| <span class="source-line-no">181</span><span id="line-181"> }</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"> protected void initializeKVHeap(List<KeyValueScanner> scanners,</span> |
| <span class="source-line-no">185</span><span id="line-185"> List<KeyValueScanner> joinedScanners, HRegion region) throws IOException {</span> |
| <span class="source-line-no">186</span><span id="line-186"> this.storeHeap = new KeyValueHeap(scanners, comparator);</span> |
| <span class="source-line-no">187</span><span id="line-187"> if (!joinedScanners.isEmpty()) {</span> |
| <span class="source-line-no">188</span><span id="line-188"> this.joinedHeap = new KeyValueHeap(joinedScanners, comparator);</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"> private IOException handleException(List<KeyValueScanner> instantiatedScanners, Throwable t) {</span> |
| <span class="source-line-no">193</span><span id="line-193"> // remove scaner read point before throw the exception</span> |
| <span class="source-line-no">194</span><span id="line-194"> scannerReadPoints.remove(this);</span> |
| <span class="source-line-no">195</span><span id="line-195"> if (storeHeap != null) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> storeHeap.close();</span> |
| <span class="source-line-no">197</span><span id="line-197"> storeHeap = null;</span> |
| <span class="source-line-no">198</span><span id="line-198"> if (joinedHeap != null) {</span> |
| <span class="source-line-no">199</span><span id="line-199"> joinedHeap.close();</span> |
| <span class="source-line-no">200</span><span id="line-200"> joinedHeap = null;</span> |
| <span class="source-line-no">201</span><span id="line-201"> }</span> |
| <span class="source-line-no">202</span><span id="line-202"> } else {</span> |
| <span class="source-line-no">203</span><span id="line-203"> // close all already instantiated scanners before throwing the exception</span> |
| <span class="source-line-no">204</span><span id="line-204"> for (KeyValueScanner scanner : instantiatedScanners) {</span> |
| <span class="source-line-no">205</span><span id="line-205"> scanner.close();</span> |
| <span class="source-line-no">206</span><span id="line-206"> }</span> |
| <span class="source-line-no">207</span><span id="line-207"> }</span> |
| <span class="source-line-no">208</span><span id="line-208"> return t instanceof IOException ? (IOException) t : new IOException(t);</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 long getMaxResultSize() {</span> |
| <span class="source-line-no">213</span><span id="line-213"> return maxResultSize;</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 getMvccReadPoint() {</span> |
| <span class="source-line-no">218</span><span id="line-218"> return this.readPt;</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 int getBatch() {</span> |
| <span class="source-line-no">223</span><span id="line-223"> return this.defaultScannerContext.getBatchLimit();</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 String getOperationId() {</span> |
| <span class="source-line-no">228</span><span id="line-228"> return operationId;</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"> /**</span> |
| <span class="source-line-no">232</span><span id="line-232"> * Reset both the filter and the old filter.</span> |
| <span class="source-line-no">233</span><span id="line-233"> * @throws IOException in case a filter raises an I/O exception.</span> |
| <span class="source-line-no">234</span><span id="line-234"> */</span> |
| <span class="source-line-no">235</span><span id="line-235"> protected final void resetFilters() throws IOException {</span> |
| <span class="source-line-no">236</span><span id="line-236"> if (filter != null) {</span> |
| <span class="source-line-no">237</span><span id="line-237"> filter.reset();</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"></span> |
| <span class="source-line-no">241</span><span id="line-241"> @Override</span> |
| <span class="source-line-no">242</span><span id="line-242"> public boolean next(List<? super ExtendedCell> outResults) throws IOException {</span> |
| <span class="source-line-no">243</span><span id="line-243"> // apply the batching limit by default</span> |
| <span class="source-line-no">244</span><span id="line-244"> return next(outResults, defaultScannerContext);</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"> @Override</span> |
| <span class="source-line-no">248</span><span id="line-248"> public synchronized boolean next(List<? super ExtendedCell> outResults,</span> |
| <span class="source-line-no">249</span><span id="line-249"> ScannerContext scannerContext) throws IOException {</span> |
| <span class="source-line-no">250</span><span id="line-250"> if (this.filterClosed) {</span> |
| <span class="source-line-no">251</span><span id="line-251"> throw new UnknownScannerException("Scanner was closed (timed out?) "</span> |
| <span class="source-line-no">252</span><span id="line-252"> + "after we renewed it. Could be caused by a very slow scanner "</span> |
| <span class="source-line-no">253</span><span id="line-253"> + "or a lengthy garbage collection");</span> |
| <span class="source-line-no">254</span><span id="line-254"> }</span> |
| <span class="source-line-no">255</span><span id="line-255"> region.startRegionOperation(Operation.SCAN);</span> |
| <span class="source-line-no">256</span><span id="line-256"> try {</span> |
| <span class="source-line-no">257</span><span id="line-257"> return nextRaw(outResults, scannerContext);</span> |
| <span class="source-line-no">258</span><span id="line-258"> } finally {</span> |
| <span class="source-line-no">259</span><span id="line-259"> region.closeRegionOperation(Operation.SCAN);</span> |
| <span class="source-line-no">260</span><span id="line-260"> }</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</span> |
| <span class="source-line-no">262</span><span id="line-262"></span> |
| <span class="source-line-no">263</span><span id="line-263"> @Override</span> |
| <span class="source-line-no">264</span><span id="line-264"> public boolean nextRaw(List<? super ExtendedCell> outResults) throws IOException {</span> |
| <span class="source-line-no">265</span><span id="line-265"> // Use the RegionScanner's context by default</span> |
| <span class="source-line-no">266</span><span id="line-266"> return nextRaw(outResults, defaultScannerContext);</span> |
| <span class="source-line-no">267</span><span id="line-267"> }</span> |
| <span class="source-line-no">268</span><span id="line-268"></span> |
| <span class="source-line-no">269</span><span id="line-269"> @Override</span> |
| <span class="source-line-no">270</span><span id="line-270"> public boolean nextRaw(List<? super ExtendedCell> outResults, ScannerContext scannerContext)</span> |
| <span class="source-line-no">271</span><span id="line-271"> throws IOException {</span> |
| <span class="source-line-no">272</span><span id="line-272"> if (storeHeap == null) {</span> |
| <span class="source-line-no">273</span><span id="line-273"> // scanner is closed</span> |
| <span class="source-line-no">274</span><span id="line-274"> throw new UnknownScannerException("Scanner was closed");</span> |
| <span class="source-line-no">275</span><span id="line-275"> }</span> |
| <span class="source-line-no">276</span><span id="line-276"> boolean moreValues = false;</span> |
| <span class="source-line-no">277</span><span id="line-277"> if (outResults.isEmpty()) {</span> |
| <span class="source-line-no">278</span><span id="line-278"> // Usually outResults is empty. This is true when next is called</span> |
| <span class="source-line-no">279</span><span id="line-279"> // to handle scan or get operation.</span> |
| <span class="source-line-no">280</span><span id="line-280"> moreValues = nextInternal(outResults, scannerContext);</span> |
| <span class="source-line-no">281</span><span id="line-281"> } else {</span> |
| <span class="source-line-no">282</span><span id="line-282"> List<ExtendedCell> tmpList = new ArrayList<>();</span> |
| <span class="source-line-no">283</span><span id="line-283"> moreValues = nextInternal(tmpList, scannerContext);</span> |
| <span class="source-line-no">284</span><span id="line-284"> outResults.addAll(tmpList);</span> |
| <span class="source-line-no">285</span><span id="line-285"> }</span> |
| <span class="source-line-no">286</span><span id="line-286"></span> |
| <span class="source-line-no">287</span><span id="line-287"> region.addReadRequestsCount(1);</span> |
| <span class="source-line-no">288</span><span id="line-288"> if (region.getMetrics() != null) {</span> |
| <span class="source-line-no">289</span><span id="line-289"> region.getMetrics().updateReadRequestCount();</span> |
| <span class="source-line-no">290</span><span id="line-290"> }</span> |
| <span class="source-line-no">291</span><span id="line-291"></span> |
| <span class="source-line-no">292</span><span id="line-292"> // If the size limit was reached it means a partial Result is being returned. Returning a</span> |
| <span class="source-line-no">293</span><span id="line-293"> // partial Result means that we should not reset the filters; filters should only be reset in</span> |
| <span class="source-line-no">294</span><span id="line-294"> // between rows</span> |
| <span class="source-line-no">295</span><span id="line-295"> if (!scannerContext.mayHaveMoreCellsInRow()) {</span> |
| <span class="source-line-no">296</span><span id="line-296"> resetFilters();</span> |
| <span class="source-line-no">297</span><span id="line-297"> }</span> |
| <span class="source-line-no">298</span><span id="line-298"></span> |
| <span class="source-line-no">299</span><span id="line-299"> if (isFilterDoneInternal()) {</span> |
| <span class="source-line-no">300</span><span id="line-300"> moreValues = false;</span> |
| <span class="source-line-no">301</span><span id="line-301"> }</span> |
| <span class="source-line-no">302</span><span id="line-302"> return moreValues;</span> |
| <span class="source-line-no">303</span><span id="line-303"> }</span> |
| <span class="source-line-no">304</span><span id="line-304"></span> |
| <span class="source-line-no">305</span><span id="line-305"> /** Returns true if more cells exist after this batch, false if scanner is done */</span> |
| <span class="source-line-no">306</span><span id="line-306"> private boolean populateFromJoinedHeap(List<? super ExtendedCell> results,</span> |
| <span class="source-line-no">307</span><span id="line-307"> ScannerContext scannerContext) throws IOException {</span> |
| <span class="source-line-no">308</span><span id="line-308"> assert joinedContinuationRow != null;</span> |
| <span class="source-line-no">309</span><span id="line-309"> boolean moreValues =</span> |
| <span class="source-line-no">310</span><span id="line-310"> populateResult(results, this.joinedHeap, scannerContext, joinedContinuationRow);</span> |
| <span class="source-line-no">311</span><span id="line-311"></span> |
| <span class="source-line-no">312</span><span id="line-312"> if (!scannerContext.checkAnyLimitReached(LimitScope.BETWEEN_CELLS)) {</span> |
| <span class="source-line-no">313</span><span id="line-313"> // We are done with this row, reset the continuation.</span> |
| <span class="source-line-no">314</span><span id="line-314"> joinedContinuationRow = null;</span> |
| <span class="source-line-no">315</span><span id="line-315"> }</span> |
| <span class="source-line-no">316</span><span id="line-316"> // As the data is obtained from two independent heaps, we need to</span> |
| <span class="source-line-no">317</span><span id="line-317"> // ensure that result list is sorted, because Result relies on that.</span> |
| <span class="source-line-no">318</span><span id="line-318"> ((List<Cell>) results).sort(comparator);</span> |
| <span class="source-line-no">319</span><span id="line-319"> return moreValues;</span> |
| <span class="source-line-no">320</span><span id="line-320"> }</span> |
| <span class="source-line-no">321</span><span id="line-321"></span> |
| <span class="source-line-no">322</span><span id="line-322"> /**</span> |
| <span class="source-line-no">323</span><span id="line-323"> * Fetches records with currentRow into results list, until next row, batchLimit (if not -1) is</span> |
| <span class="source-line-no">324</span><span id="line-324"> * reached, or remainingResultSize (if not -1) is reaced</span> |
| <span class="source-line-no">325</span><span id="line-325"> * @param heap KeyValueHeap to fetch data from.It must be positioned on correct row before call.</span> |
| <span class="source-line-no">326</span><span id="line-326"> * @return state of last call to {@link KeyValueHeap#next()}</span> |
| <span class="source-line-no">327</span><span id="line-327"> */</span> |
| <span class="source-line-no">328</span><span id="line-328"> private boolean populateResult(List<? super ExtendedCell> results, KeyValueHeap heap,</span> |
| <span class="source-line-no">329</span><span id="line-329"> ScannerContext scannerContext, ExtendedCell currentRowCell) throws IOException {</span> |
| <span class="source-line-no">330</span><span id="line-330"> Cell nextKv;</span> |
| <span class="source-line-no">331</span><span id="line-331"> boolean moreCellsInRow = false;</span> |
| <span class="source-line-no">332</span><span id="line-332"> boolean tmpKeepProgress = scannerContext.getKeepProgress();</span> |
| <span class="source-line-no">333</span><span id="line-333"> // Scanning between column families and thus the scope is between cells</span> |
| <span class="source-line-no">334</span><span id="line-334"> LimitScope limitScope = LimitScope.BETWEEN_CELLS;</span> |
| <span class="source-line-no">335</span><span id="line-335"> do {</span> |
| <span class="source-line-no">336</span><span id="line-336"> // Check for thread interrupt status in case we have been signaled from</span> |
| <span class="source-line-no">337</span><span id="line-337"> // #interruptRegionOperation.</span> |
| <span class="source-line-no">338</span><span id="line-338"> region.checkInterrupt();</span> |
| <span class="source-line-no">339</span><span id="line-339"></span> |
| <span class="source-line-no">340</span><span id="line-340"> // We want to maintain any progress that is made towards the limits while scanning across</span> |
| <span class="source-line-no">341</span><span id="line-341"> // different column families. To do this, we toggle the keep progress flag on during calls</span> |
| <span class="source-line-no">342</span><span id="line-342"> // to the StoreScanner to ensure that any progress made thus far is not wiped away.</span> |
| <span class="source-line-no">343</span><span id="line-343"> scannerContext.setKeepProgress(true);</span> |
| <span class="source-line-no">344</span><span id="line-344"> heap.next(results, scannerContext);</span> |
| <span class="source-line-no">345</span><span id="line-345"> scannerContext.setKeepProgress(tmpKeepProgress);</span> |
| <span class="source-line-no">346</span><span id="line-346"></span> |
| <span class="source-line-no">347</span><span id="line-347"> nextKv = heap.peek();</span> |
| <span class="source-line-no">348</span><span id="line-348"> moreCellsInRow = moreCellsInRow(nextKv, currentRowCell);</span> |
| <span class="source-line-no">349</span><span id="line-349"> if (!moreCellsInRow) {</span> |
| <span class="source-line-no">350</span><span id="line-350"> incrementCountOfRowsScannedMetric(scannerContext);</span> |
| <span class="source-line-no">351</span><span id="line-351"> }</span> |
| <span class="source-line-no">352</span><span id="line-352"> if (moreCellsInRow && scannerContext.checkBatchLimit(limitScope)) {</span> |
| <span class="source-line-no">353</span><span id="line-353"> return scannerContext.setScannerState(NextState.BATCH_LIMIT_REACHED).hasMoreValues();</span> |
| <span class="source-line-no">354</span><span id="line-354"> } else if (scannerContext.checkSizeLimit(limitScope)) {</span> |
| <span class="source-line-no">355</span><span id="line-355"> ScannerContext.NextState state =</span> |
| <span class="source-line-no">356</span><span id="line-356"> moreCellsInRow ? NextState.SIZE_LIMIT_REACHED_MID_ROW : NextState.SIZE_LIMIT_REACHED;</span> |
| <span class="source-line-no">357</span><span id="line-357"> return scannerContext.setScannerState(state).hasMoreValues();</span> |
| <span class="source-line-no">358</span><span id="line-358"> } else if (scannerContext.checkTimeLimit(limitScope)) {</span> |
| <span class="source-line-no">359</span><span id="line-359"> ScannerContext.NextState state =</span> |
| <span class="source-line-no">360</span><span id="line-360"> moreCellsInRow ? NextState.TIME_LIMIT_REACHED_MID_ROW : NextState.TIME_LIMIT_REACHED;</span> |
| <span class="source-line-no">361</span><span id="line-361"> return scannerContext.setScannerState(state).hasMoreValues();</span> |
| <span class="source-line-no">362</span><span id="line-362"> }</span> |
| <span class="source-line-no">363</span><span id="line-363"> } while (moreCellsInRow);</span> |
| <span class="source-line-no">364</span><span id="line-364"> return nextKv != null;</span> |
| <span class="source-line-no">365</span><span id="line-365"> }</span> |
| <span class="source-line-no">366</span><span id="line-366"></span> |
| <span class="source-line-no">367</span><span id="line-367"> /**</span> |
| <span class="source-line-no">368</span><span id="line-368"> * Based on the nextKv in the heap, and the current row, decide whether or not there are more</span> |
| <span class="source-line-no">369</span><span id="line-369"> * cells to be read in the heap. If the row of the nextKv in the heap matches the current row then</span> |
| <span class="source-line-no">370</span><span id="line-370"> * there are more cells to be read in the row.</span> |
| <span class="source-line-no">371</span><span id="line-371"> * @return true When there are more cells in the row to be read</span> |
| <span class="source-line-no">372</span><span id="line-372"> */</span> |
| <span class="source-line-no">373</span><span id="line-373"> private boolean moreCellsInRow(final Cell nextKv, Cell currentRowCell) {</span> |
| <span class="source-line-no">374</span><span id="line-374"> return nextKv != null && CellUtil.matchingRows(nextKv, currentRowCell);</span> |
| <span class="source-line-no">375</span><span id="line-375"> }</span> |
| <span class="source-line-no">376</span><span id="line-376"></span> |
| <span class="source-line-no">377</span><span id="line-377"> /** Returns True if a filter rules the scanner is over, done. */</span> |
| <span class="source-line-no">378</span><span id="line-378"> @Override</span> |
| <span class="source-line-no">379</span><span id="line-379"> public synchronized boolean isFilterDone() throws IOException {</span> |
| <span class="source-line-no">380</span><span id="line-380"> return isFilterDoneInternal();</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"> private boolean isFilterDoneInternal() throws IOException {</span> |
| <span class="source-line-no">384</span><span id="line-384"> return this.filter != null && this.filter.filterAllRemaining();</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"> private void checkClientDisconnect(Optional<RpcCall> rpcCall) throws CallerDisconnectedException {</span> |
| <span class="source-line-no">388</span><span id="line-388"> if (rpcCall.isPresent()) {</span> |
| <span class="source-line-no">389</span><span id="line-389"> // If a user specifies a too-restrictive or too-slow scanner, the</span> |
| <span class="source-line-no">390</span><span id="line-390"> // client might time out and disconnect while the server side</span> |
| <span class="source-line-no">391</span><span id="line-391"> // is still processing the request. We should abort aggressively</span> |
| <span class="source-line-no">392</span><span id="line-392"> // in that case.</span> |
| <span class="source-line-no">393</span><span id="line-393"> long afterTime = rpcCall.get().disconnectSince();</span> |
| <span class="source-line-no">394</span><span id="line-394"> if (afterTime >= 0) {</span> |
| <span class="source-line-no">395</span><span id="line-395"> throw new CallerDisconnectedException(</span> |
| <span class="source-line-no">396</span><span id="line-396"> "Aborting on region " + getRegionInfo().getRegionNameAsString() + ", call " + this</span> |
| <span class="source-line-no">397</span><span id="line-397"> + " after " + afterTime + " ms, since " + "caller disconnected");</span> |
| <span class="source-line-no">398</span><span id="line-398"> }</span> |
| <span class="source-line-no">399</span><span id="line-399"> }</span> |
| <span class="source-line-no">400</span><span id="line-400"> }</span> |
| <span class="source-line-no">401</span><span id="line-401"></span> |
| <span class="source-line-no">402</span><span id="line-402"> private void resetProgress(ScannerContext scannerContext, int initialBatchProgress,</span> |
| <span class="source-line-no">403</span><span id="line-403"> long initialSizeProgress, long initialHeapSizeProgress) {</span> |
| <span class="source-line-no">404</span><span id="line-404"> // Starting to scan a new row. Reset the scanner progress according to whether or not</span> |
| <span class="source-line-no">405</span><span id="line-405"> // progress should be kept.</span> |
| <span class="source-line-no">406</span><span id="line-406"> if (scannerContext.getKeepProgress()) {</span> |
| <span class="source-line-no">407</span><span id="line-407"> // Progress should be kept. Reset to initial values seen at start of method invocation.</span> |
| <span class="source-line-no">408</span><span id="line-408"> scannerContext.setProgress(initialBatchProgress, initialSizeProgress,</span> |
| <span class="source-line-no">409</span><span id="line-409"> initialHeapSizeProgress);</span> |
| <span class="source-line-no">410</span><span id="line-410"> } else {</span> |
| <span class="source-line-no">411</span><span id="line-411"> scannerContext.clearProgress();</span> |
| <span class="source-line-no">412</span><span id="line-412"> }</span> |
| <span class="source-line-no">413</span><span id="line-413"> }</span> |
| <span class="source-line-no">414</span><span id="line-414"></span> |
| <span class="source-line-no">415</span><span id="line-415"> private boolean nextInternal(List<? super ExtendedCell> results, ScannerContext scannerContext)</span> |
| <span class="source-line-no">416</span><span id="line-416"> throws IOException {</span> |
| <span class="source-line-no">417</span><span id="line-417"> Preconditions.checkArgument(results.isEmpty(), "First parameter should be an empty list");</span> |
| <span class="source-line-no">418</span><span id="line-418"> Preconditions.checkArgument(scannerContext != null, "Scanner context cannot be null");</span> |
| <span class="source-line-no">419</span><span id="line-419"> Optional<RpcCall> rpcCall = RpcServer.getCurrentCall();</span> |
| <span class="source-line-no">420</span><span id="line-420"></span> |
| <span class="source-line-no">421</span><span id="line-421"> // Save the initial progress from the Scanner context in these local variables. The progress</span> |
| <span class="source-line-no">422</span><span id="line-422"> // may need to be reset a few times if rows are being filtered out so we save the initial</span> |
| <span class="source-line-no">423</span><span id="line-423"> // progress.</span> |
| <span class="source-line-no">424</span><span id="line-424"> int initialBatchProgress = scannerContext.getBatchProgress();</span> |
| <span class="source-line-no">425</span><span id="line-425"> long initialSizeProgress = scannerContext.getDataSizeProgress();</span> |
| <span class="source-line-no">426</span><span id="line-426"> long initialHeapSizeProgress = scannerContext.getHeapSizeProgress();</span> |
| <span class="source-line-no">427</span><span id="line-427"></span> |
| <span class="source-line-no">428</span><span id="line-428"> // Used to check time limit</span> |
| <span class="source-line-no">429</span><span id="line-429"> LimitScope limitScope = LimitScope.BETWEEN_CELLS;</span> |
| <span class="source-line-no">430</span><span id="line-430"></span> |
| <span class="source-line-no">431</span><span id="line-431"> // The loop here is used only when at some point during the next we determine</span> |
| <span class="source-line-no">432</span><span id="line-432"> // that due to effects of filters or otherwise, we have an empty row in the result.</span> |
| <span class="source-line-no">433</span><span id="line-433"> // Then we loop and try again. Otherwise, we must get out on the first iteration via return,</span> |
| <span class="source-line-no">434</span><span id="line-434"> // "true" if there's more data to read, "false" if there isn't (storeHeap is at a stop row,</span> |
| <span class="source-line-no">435</span><span id="line-435"> // and joinedHeap has no more data to read for the last row (if set, joinedContinuationRow).</span> |
| <span class="source-line-no">436</span><span id="line-436"> while (true) {</span> |
| <span class="source-line-no">437</span><span id="line-437"> resetProgress(scannerContext, initialBatchProgress, initialSizeProgress,</span> |
| <span class="source-line-no">438</span><span id="line-438"> initialHeapSizeProgress);</span> |
| <span class="source-line-no">439</span><span id="line-439"> checkClientDisconnect(rpcCall);</span> |
| <span class="source-line-no">440</span><span id="line-440"></span> |
| <span class="source-line-no">441</span><span id="line-441"> // Check for thread interrupt status in case we have been signaled from</span> |
| <span class="source-line-no">442</span><span id="line-442"> // #interruptRegionOperation.</span> |
| <span class="source-line-no">443</span><span id="line-443"> region.checkInterrupt();</span> |
| <span class="source-line-no">444</span><span id="line-444"></span> |
| <span class="source-line-no">445</span><span id="line-445"> // Let's see what we have in the storeHeap.</span> |
| <span class="source-line-no">446</span><span id="line-446"> ExtendedCell current = this.storeHeap.peek();</span> |
| <span class="source-line-no">447</span><span id="line-447"></span> |
| <span class="source-line-no">448</span><span id="line-448"> boolean shouldStop = shouldStop(current);</span> |
| <span class="source-line-no">449</span><span id="line-449"> // When has filter row is true it means that the all the cells for a particular row must be</span> |
| <span class="source-line-no">450</span><span id="line-450"> // read before a filtering decision can be made. This means that filters where hasFilterRow</span> |
| <span class="source-line-no">451</span><span id="line-451"> // run the risk of enLongAddering out of memory errors in the case that they are applied to a</span> |
| <span class="source-line-no">452</span><span id="line-452"> // table that has very large rows.</span> |
| <span class="source-line-no">453</span><span id="line-453"> boolean hasFilterRow = this.filter != null && this.filter.hasFilterRow();</span> |
| <span class="source-line-no">454</span><span id="line-454"></span> |
| <span class="source-line-no">455</span><span id="line-455"> // If filter#hasFilterRow is true, partial results are not allowed since allowing them</span> |
| <span class="source-line-no">456</span><span id="line-456"> // would prevent the filters from being evaluated. Thus, if it is true, change the</span> |
| <span class="source-line-no">457</span><span id="line-457"> // scope of any limits that could potentially create partial results to</span> |
| <span class="source-line-no">458</span><span id="line-458"> // LimitScope.BETWEEN_ROWS so that those limits are not reached mid-row</span> |
| <span class="source-line-no">459</span><span id="line-459"> if (hasFilterRow) {</span> |
| <span class="source-line-no">460</span><span id="line-460"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">461</span><span id="line-461"> LOG.trace("filter#hasFilterRow is true which prevents partial results from being "</span> |
| <span class="source-line-no">462</span><span id="line-462"> + " formed. Changing scope of limits that may create partials");</span> |
| <span class="source-line-no">463</span><span id="line-463"> }</span> |
| <span class="source-line-no">464</span><span id="line-464"> scannerContext.setSizeLimitScope(LimitScope.BETWEEN_ROWS);</span> |
| <span class="source-line-no">465</span><span id="line-465"> scannerContext.setTimeLimitScope(LimitScope.BETWEEN_ROWS);</span> |
| <span class="source-line-no">466</span><span id="line-466"> limitScope = LimitScope.BETWEEN_ROWS;</span> |
| <span class="source-line-no">467</span><span id="line-467"> }</span> |
| <span class="source-line-no">468</span><span id="line-468"></span> |
| <span class="source-line-no">469</span><span id="line-469"> if (scannerContext.checkTimeLimit(LimitScope.BETWEEN_CELLS)) {</span> |
| <span class="source-line-no">470</span><span id="line-470"> if (hasFilterRow) {</span> |
| <span class="source-line-no">471</span><span id="line-471"> throw new IncompatibleFilterException(</span> |
| <span class="source-line-no">472</span><span id="line-472"> "Filter whose hasFilterRow() returns true is incompatible with scans that must "</span> |
| <span class="source-line-no">473</span><span id="line-473"> + " stop mid-row because of a limit. ScannerContext:" + scannerContext);</span> |
| <span class="source-line-no">474</span><span id="line-474"> }</span> |
| <span class="source-line-no">475</span><span id="line-475"> return true;</span> |
| <span class="source-line-no">476</span><span id="line-476"> }</span> |
| <span class="source-line-no">477</span><span id="line-477"></span> |
| <span class="source-line-no">478</span><span id="line-478"> // Check if we were getting data from the joinedHeap and hit the limit.</span> |
| <span class="source-line-no">479</span><span id="line-479"> // If not, then it's main path - getting results from storeHeap.</span> |
| <span class="source-line-no">480</span><span id="line-480"> if (joinedContinuationRow == null) {</span> |
| <span class="source-line-no">481</span><span id="line-481"> // First, check if we are at a stop row. If so, there are no more results.</span> |
| <span class="source-line-no">482</span><span id="line-482"> if (shouldStop) {</span> |
| <span class="source-line-no">483</span><span id="line-483"> if (hasFilterRow) {</span> |
| <span class="source-line-no">484</span><span id="line-484"> filter.filterRowCells((List<Cell>) results);</span> |
| <span class="source-line-no">485</span><span id="line-485"> }</span> |
| <span class="source-line-no">486</span><span id="line-486"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">487</span><span id="line-487"> }</span> |
| <span class="source-line-no">488</span><span id="line-488"></span> |
| <span class="source-line-no">489</span><span id="line-489"> // Check if rowkey filter wants to exclude this row. If so, loop to next.</span> |
| <span class="source-line-no">490</span><span id="line-490"> // Technically, if we hit limits before on this row, we don't need this call.</span> |
| <span class="source-line-no">491</span><span id="line-491"> if (filterRowKey(current)) {</span> |
| <span class="source-line-no">492</span><span id="line-492"> incrementCountOfRowsFilteredMetric(scannerContext);</span> |
| <span class="source-line-no">493</span><span id="line-493"> // early check, see HBASE-16296</span> |
| <span class="source-line-no">494</span><span id="line-494"> if (isFilterDoneInternal()) {</span> |
| <span class="source-line-no">495</span><span id="line-495"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">496</span><span id="line-496"> }</span> |
| <span class="source-line-no">497</span><span id="line-497"> // Typically the count of rows scanned is incremented inside #populateResult. However,</span> |
| <span class="source-line-no">498</span><span id="line-498"> // here we are filtering a row based purely on its row key, preventing us from calling</span> |
| <span class="source-line-no">499</span><span id="line-499"> // #populateResult. Thus, perform the necessary increment here to rows scanned metric</span> |
| <span class="source-line-no">500</span><span id="line-500"> incrementCountOfRowsScannedMetric(scannerContext);</span> |
| <span class="source-line-no">501</span><span id="line-501"> boolean moreRows = nextRow(scannerContext, current);</span> |
| <span class="source-line-no">502</span><span id="line-502"> if (!moreRows) {</span> |
| <span class="source-line-no">503</span><span id="line-503"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">504</span><span id="line-504"> }</span> |
| <span class="source-line-no">505</span><span id="line-505"> results.clear();</span> |
| <span class="source-line-no">506</span><span id="line-506"></span> |
| <span class="source-line-no">507</span><span id="line-507"> // Read nothing as the rowkey was filtered, but still need to check time limit</span> |
| <span class="source-line-no">508</span><span id="line-508"> // We also check size limit because we might have read blocks in getting to this point.</span> |
| <span class="source-line-no">509</span><span id="line-509"> if (scannerContext.checkAnyLimitReached(limitScope)) {</span> |
| <span class="source-line-no">510</span><span id="line-510"> return true;</span> |
| <span class="source-line-no">511</span><span id="line-511"> }</span> |
| <span class="source-line-no">512</span><span id="line-512"> continue;</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"> // Ok, we are good, let's try to get some results from the main heap.</span> |
| <span class="source-line-no">516</span><span id="line-516"> populateResult(results, this.storeHeap, scannerContext, current);</span> |
| <span class="source-line-no">517</span><span id="line-517"> if (scannerContext.checkAnyLimitReached(LimitScope.BETWEEN_CELLS)) {</span> |
| <span class="source-line-no">518</span><span id="line-518"> if (hasFilterRow) {</span> |
| <span class="source-line-no">519</span><span id="line-519"> throw new IncompatibleFilterException(</span> |
| <span class="source-line-no">520</span><span id="line-520"> "Filter whose hasFilterRow() returns true is incompatible with scans that must "</span> |
| <span class="source-line-no">521</span><span id="line-521"> + " stop mid-row because of a limit. ScannerContext:" + scannerContext);</span> |
| <span class="source-line-no">522</span><span id="line-522"> }</span> |
| <span class="source-line-no">523</span><span id="line-523"> return true;</span> |
| <span class="source-line-no">524</span><span id="line-524"> }</span> |
| <span class="source-line-no">525</span><span id="line-525"></span> |
| <span class="source-line-no">526</span><span id="line-526"> // Check for thread interrupt status in case we have been signaled from</span> |
| <span class="source-line-no">527</span><span id="line-527"> // #interruptRegionOperation.</span> |
| <span class="source-line-no">528</span><span id="line-528"> region.checkInterrupt();</span> |
| <span class="source-line-no">529</span><span id="line-529"></span> |
| <span class="source-line-no">530</span><span id="line-530"> Cell nextKv = this.storeHeap.peek();</span> |
| <span class="source-line-no">531</span><span id="line-531"> shouldStop = shouldStop(nextKv);</span> |
| <span class="source-line-no">532</span><span id="line-532"> // save that the row was empty before filters applied to it.</span> |
| <span class="source-line-no">533</span><span id="line-533"> final boolean isEmptyRow = results.isEmpty();</span> |
| <span class="source-line-no">534</span><span id="line-534"></span> |
| <span class="source-line-no">535</span><span id="line-535"> // We have the part of the row necessary for filtering (all of it, usually).</span> |
| <span class="source-line-no">536</span><span id="line-536"> // First filter with the filterRow(List).</span> |
| <span class="source-line-no">537</span><span id="line-537"> FilterWrapper.FilterRowRetCode ret = FilterWrapper.FilterRowRetCode.NOT_CALLED;</span> |
| <span class="source-line-no">538</span><span id="line-538"> if (hasFilterRow) {</span> |
| <span class="source-line-no">539</span><span id="line-539"> ret = filter.filterRowCellsWithRet((List<Cell>) results);</span> |
| <span class="source-line-no">540</span><span id="line-540"></span> |
| <span class="source-line-no">541</span><span id="line-541"> // We don't know how the results have changed after being filtered. Must set progress</span> |
| <span class="source-line-no">542</span><span id="line-542"> // according to contents of results now.</span> |
| <span class="source-line-no">543</span><span id="line-543"> if (scannerContext.getKeepProgress()) {</span> |
| <span class="source-line-no">544</span><span id="line-544"> scannerContext.setProgress(initialBatchProgress, initialSizeProgress,</span> |
| <span class="source-line-no">545</span><span id="line-545"> initialHeapSizeProgress);</span> |
| <span class="source-line-no">546</span><span id="line-546"> } else {</span> |
| <span class="source-line-no">547</span><span id="line-547"> scannerContext.clearProgress();</span> |
| <span class="source-line-no">548</span><span id="line-548"> }</span> |
| <span class="source-line-no">549</span><span id="line-549"> scannerContext.incrementBatchProgress(results.size());</span> |
| <span class="source-line-no">550</span><span id="line-550"> for (ExtendedCell cell : (List<ExtendedCell>) results) {</span> |
| <span class="source-line-no">551</span><span id="line-551"> scannerContext.incrementSizeProgress(PrivateCellUtil.estimatedSerializedSizeOf(cell),</span> |
| <span class="source-line-no">552</span><span id="line-552"> cell.heapSize());</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"> if (isEmptyRow || ret == FilterWrapper.FilterRowRetCode.EXCLUDE || filterRow()) {</span> |
| <span class="source-line-no">557</span><span id="line-557"> incrementCountOfRowsFilteredMetric(scannerContext);</span> |
| <span class="source-line-no">558</span><span id="line-558"> results.clear();</span> |
| <span class="source-line-no">559</span><span id="line-559"> boolean moreRows = nextRow(scannerContext, current);</span> |
| <span class="source-line-no">560</span><span id="line-560"> if (!moreRows) {</span> |
| <span class="source-line-no">561</span><span id="line-561"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">562</span><span id="line-562"> }</span> |
| <span class="source-line-no">563</span><span id="line-563"></span> |
| <span class="source-line-no">564</span><span id="line-564"> // This row was totally filtered out, if this is NOT the last row,</span> |
| <span class="source-line-no">565</span><span id="line-565"> // we should continue on. Otherwise, nothing else to do.</span> |
| <span class="source-line-no">566</span><span id="line-566"> if (!shouldStop) {</span> |
| <span class="source-line-no">567</span><span id="line-567"> // Read nothing as the cells was filtered, but still need to check time limit.</span> |
| <span class="source-line-no">568</span><span id="line-568"> // We also check size limit because we might have read blocks in getting to this point.</span> |
| <span class="source-line-no">569</span><span id="line-569"> if (scannerContext.checkAnyLimitReached(limitScope)) {</span> |
| <span class="source-line-no">570</span><span id="line-570"> return true;</span> |
| <span class="source-line-no">571</span><span id="line-571"> }</span> |
| <span class="source-line-no">572</span><span id="line-572"> continue;</span> |
| <span class="source-line-no">573</span><span id="line-573"> }</span> |
| <span class="source-line-no">574</span><span id="line-574"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">575</span><span id="line-575"> }</span> |
| <span class="source-line-no">576</span><span id="line-576"></span> |
| <span class="source-line-no">577</span><span id="line-577"> // Ok, we are done with storeHeap for this row.</span> |
| <span class="source-line-no">578</span><span id="line-578"> // Now we may need to fetch additional, non-essential data into row.</span> |
| <span class="source-line-no">579</span><span id="line-579"> // These values are not needed for filter to work, so we postpone their</span> |
| <span class="source-line-no">580</span><span id="line-580"> // fetch to (possibly) reduce amount of data loads from disk.</span> |
| <span class="source-line-no">581</span><span id="line-581"> if (this.joinedHeap != null) {</span> |
| <span class="source-line-no">582</span><span id="line-582"> boolean mayHaveData = joinedHeapMayHaveData(current);</span> |
| <span class="source-line-no">583</span><span id="line-583"> if (mayHaveData) {</span> |
| <span class="source-line-no">584</span><span id="line-584"> joinedContinuationRow = current;</span> |
| <span class="source-line-no">585</span><span id="line-585"> populateFromJoinedHeap(results, scannerContext);</span> |
| <span class="source-line-no">586</span><span id="line-586"></span> |
| <span class="source-line-no">587</span><span id="line-587"> if (scannerContext.checkAnyLimitReached(LimitScope.BETWEEN_CELLS)) {</span> |
| <span class="source-line-no">588</span><span id="line-588"> return true;</span> |
| <span class="source-line-no">589</span><span id="line-589"> }</span> |
| <span class="source-line-no">590</span><span id="line-590"> }</span> |
| <span class="source-line-no">591</span><span id="line-591"> }</span> |
| <span class="source-line-no">592</span><span id="line-592"> } else {</span> |
| <span class="source-line-no">593</span><span id="line-593"> // Populating from the joined heap was stopped by limits, populate some more.</span> |
| <span class="source-line-no">594</span><span id="line-594"> populateFromJoinedHeap(results, scannerContext);</span> |
| <span class="source-line-no">595</span><span id="line-595"> if (scannerContext.checkAnyLimitReached(LimitScope.BETWEEN_CELLS)) {</span> |
| <span class="source-line-no">596</span><span id="line-596"> return true;</span> |
| <span class="source-line-no">597</span><span id="line-597"> }</span> |
| <span class="source-line-no">598</span><span id="line-598"> }</span> |
| <span class="source-line-no">599</span><span id="line-599"> // We may have just called populateFromJoinedMap and hit the limits. If that is</span> |
| <span class="source-line-no">600</span><span id="line-600"> // the case, we need to call it again on the next next() invocation.</span> |
| <span class="source-line-no">601</span><span id="line-601"> if (joinedContinuationRow != null) {</span> |
| <span class="source-line-no">602</span><span id="line-602"> return scannerContext.setScannerState(NextState.MORE_VALUES).hasMoreValues();</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"> // Finally, we are done with both joinedHeap and storeHeap.</span> |
| <span class="source-line-no">606</span><span id="line-606"> // Double check to prevent empty rows from appearing in result. It could be</span> |
| <span class="source-line-no">607</span><span id="line-607"> // the case when SingleColumnValueExcludeFilter is used.</span> |
| <span class="source-line-no">608</span><span id="line-608"> if (results.isEmpty()) {</span> |
| <span class="source-line-no">609</span><span id="line-609"> incrementCountOfRowsFilteredMetric(scannerContext);</span> |
| <span class="source-line-no">610</span><span id="line-610"> boolean moreRows = nextRow(scannerContext, current);</span> |
| <span class="source-line-no">611</span><span id="line-611"> if (!moreRows) {</span> |
| <span class="source-line-no">612</span><span id="line-612"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">613</span><span id="line-613"> }</span> |
| <span class="source-line-no">614</span><span id="line-614"> if (!shouldStop) {</span> |
| <span class="source-line-no">615</span><span id="line-615"> // We check size limit because we might have read blocks in the nextRow call above, or</span> |
| <span class="source-line-no">616</span><span id="line-616"> // in the call populateResults call. Only scans with hasFilterRow should reach this point,</span> |
| <span class="source-line-no">617</span><span id="line-617"> // and for those scans which filter row _cells_ this is the only place we can actually</span> |
| <span class="source-line-no">618</span><span id="line-618"> // enforce that the scan does not exceed limits since it bypasses all other checks above.</span> |
| <span class="source-line-no">619</span><span id="line-619"> if (scannerContext.checkSizeLimit(limitScope)) {</span> |
| <span class="source-line-no">620</span><span id="line-620"> return true;</span> |
| <span class="source-line-no">621</span><span id="line-621"> }</span> |
| <span class="source-line-no">622</span><span id="line-622"> continue;</span> |
| <span class="source-line-no">623</span><span id="line-623"> }</span> |
| <span class="source-line-no">624</span><span id="line-624"> }</span> |
| <span class="source-line-no">625</span><span id="line-625"></span> |
| <span class="source-line-no">626</span><span id="line-626"> if (shouldStop) {</span> |
| <span class="source-line-no">627</span><span id="line-627"> return scannerContext.setScannerState(NextState.NO_MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">628</span><span id="line-628"> } else {</span> |
| <span class="source-line-no">629</span><span id="line-629"> return scannerContext.setScannerState(NextState.MORE_VALUES).hasMoreValues();</span> |
| <span class="source-line-no">630</span><span id="line-630"> }</span> |
| <span class="source-line-no">631</span><span id="line-631"> }</span> |
| <span class="source-line-no">632</span><span id="line-632"> }</span> |
| <span class="source-line-no">633</span><span id="line-633"></span> |
| <span class="source-line-no">634</span><span id="line-634"> private void incrementCountOfRowsFilteredMetric(ScannerContext scannerContext) {</span> |
| <span class="source-line-no">635</span><span id="line-635"> region.filteredReadRequestsCount.increment();</span> |
| <span class="source-line-no">636</span><span id="line-636"> if (region.getMetrics() != null) {</span> |
| <span class="source-line-no">637</span><span id="line-637"> region.getMetrics().updateFilteredRecords();</span> |
| <span class="source-line-no">638</span><span id="line-638"> }</span> |
| <span class="source-line-no">639</span><span id="line-639"></span> |
| <span class="source-line-no">640</span><span id="line-640"> if (scannerContext == null || !scannerContext.isTrackingMetrics()) {</span> |
| <span class="source-line-no">641</span><span id="line-641"> return;</span> |
| <span class="source-line-no">642</span><span id="line-642"> }</span> |
| <span class="source-line-no">643</span><span id="line-643"></span> |
| <span class="source-line-no">644</span><span id="line-644"> scannerContext.getMetrics().countOfRowsFiltered.incrementAndGet();</span> |
| <span class="source-line-no">645</span><span id="line-645"> }</span> |
| <span class="source-line-no">646</span><span id="line-646"></span> |
| <span class="source-line-no">647</span><span id="line-647"> private void incrementCountOfRowsScannedMetric(ScannerContext scannerContext) {</span> |
| <span class="source-line-no">648</span><span id="line-648"> if (scannerContext == null || !scannerContext.isTrackingMetrics()) {</span> |
| <span class="source-line-no">649</span><span id="line-649"> return;</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> |
| <span class="source-line-no">652</span><span id="line-652"> scannerContext.getMetrics().countOfRowsScanned.incrementAndGet();</span> |
| <span class="source-line-no">653</span><span id="line-653"> }</span> |
| <span class="source-line-no">654</span><span id="line-654"></span> |
| <span class="source-line-no">655</span><span id="line-655"> /** Returns true when the joined heap may have data for the current row */</span> |
| <span class="source-line-no">656</span><span id="line-656"> private boolean joinedHeapMayHaveData(ExtendedCell currentRowCell) throws IOException {</span> |
| <span class="source-line-no">657</span><span id="line-657"> Cell nextJoinedKv = joinedHeap.peek();</span> |
| <span class="source-line-no">658</span><span id="line-658"> boolean matchCurrentRow =</span> |
| <span class="source-line-no">659</span><span id="line-659"> nextJoinedKv != null && CellUtil.matchingRows(nextJoinedKv, currentRowCell);</span> |
| <span class="source-line-no">660</span><span id="line-660"> boolean matchAfterSeek = false;</span> |
| <span class="source-line-no">661</span><span id="line-661"></span> |
| <span class="source-line-no">662</span><span id="line-662"> // If the next value in the joined heap does not match the current row, try to seek to the</span> |
| <span class="source-line-no">663</span><span id="line-663"> // correct row</span> |
| <span class="source-line-no">664</span><span id="line-664"> if (!matchCurrentRow) {</span> |
| <span class="source-line-no">665</span><span id="line-665"> ExtendedCell firstOnCurrentRow = PrivateCellUtil.createFirstOnRow(currentRowCell);</span> |
| <span class="source-line-no">666</span><span id="line-666"> boolean seekSuccessful = this.joinedHeap.requestSeek(firstOnCurrentRow, true, true);</span> |
| <span class="source-line-no">667</span><span id="line-667"> matchAfterSeek = seekSuccessful && joinedHeap.peek() != null</span> |
| <span class="source-line-no">668</span><span id="line-668"> && CellUtil.matchingRows(joinedHeap.peek(), currentRowCell);</span> |
| <span class="source-line-no">669</span><span id="line-669"> }</span> |
| <span class="source-line-no">670</span><span id="line-670"></span> |
| <span class="source-line-no">671</span><span id="line-671"> return matchCurrentRow || matchAfterSeek;</span> |
| <span class="source-line-no">672</span><span id="line-672"> }</span> |
| <span class="source-line-no">673</span><span id="line-673"></span> |
| <span class="source-line-no">674</span><span id="line-674"> /**</span> |
| <span class="source-line-no">675</span><span id="line-675"> * This function is to maintain backward compatibility for 0.94 filters. HBASE-6429 combines both</span> |
| <span class="source-line-no">676</span><span id="line-676"> * filterRow & filterRow({@code List<KeyValue> kvs}) functions. While 0.94 code or older, it may</span> |
| <span class="source-line-no">677</span><span id="line-677"> * not implement hasFilterRow as HBase-6429 expects because 0.94 hasFilterRow() only returns true</span> |
| <span class="source-line-no">678</span><span id="line-678"> * when filterRow({@code List<KeyValue> kvs}) is overridden not the filterRow(). Therefore, the</span> |
| <span class="source-line-no">679</span><span id="line-679"> * filterRow() will be skipped.</span> |
| <span class="source-line-no">680</span><span id="line-680"> */</span> |
| <span class="source-line-no">681</span><span id="line-681"> private boolean filterRow() throws IOException {</span> |
| <span class="source-line-no">682</span><span id="line-682"> // when hasFilterRow returns true, filter.filterRow() will be called automatically inside</span> |
| <span class="source-line-no">683</span><span id="line-683"> // filterRowCells(List<Cell> kvs) so we skip that scenario here.</span> |
| <span class="source-line-no">684</span><span id="line-684"> return filter != null && (!filter.hasFilterRow()) && filter.filterRow();</span> |
| <span class="source-line-no">685</span><span id="line-685"> }</span> |
| <span class="source-line-no">686</span><span id="line-686"></span> |
| <span class="source-line-no">687</span><span id="line-687"> private boolean filterRowKey(Cell current) throws IOException {</span> |
| <span class="source-line-no">688</span><span id="line-688"> return filter != null && filter.filterRowKey(current);</span> |
| <span class="source-line-no">689</span><span id="line-689"> }</span> |
| <span class="source-line-no">690</span><span id="line-690"></span> |
| <span class="source-line-no">691</span><span id="line-691"> /**</span> |
| <span class="source-line-no">692</span><span id="line-692"> * A mocked list implementation - discards all updates.</span> |
| <span class="source-line-no">693</span><span id="line-693"> */</span> |
| <span class="source-line-no">694</span><span id="line-694"> private static final List<Cell> MOCKED_LIST = new AbstractList<Cell>() {</span> |
| <span class="source-line-no">695</span><span id="line-695"></span> |
| <span class="source-line-no">696</span><span id="line-696"> @Override</span> |
| <span class="source-line-no">697</span><span id="line-697"> public void add(int index, Cell element) {</span> |
| <span class="source-line-no">698</span><span id="line-698"> // do nothing</span> |
| <span class="source-line-no">699</span><span id="line-699"> }</span> |
| <span class="source-line-no">700</span><span id="line-700"></span> |
| <span class="source-line-no">701</span><span id="line-701"> @Override</span> |
| <span class="source-line-no">702</span><span id="line-702"> public boolean addAll(int index, Collection<? extends Cell> c) {</span> |
| <span class="source-line-no">703</span><span id="line-703"> return false; // this list is never changed as a result of an update</span> |
| <span class="source-line-no">704</span><span id="line-704"> }</span> |
| <span class="source-line-no">705</span><span id="line-705"></span> |
| <span class="source-line-no">706</span><span id="line-706"> @Override</span> |
| <span class="source-line-no">707</span><span id="line-707"> public KeyValue get(int index) {</span> |
| <span class="source-line-no">708</span><span id="line-708"> throw new UnsupportedOperationException();</span> |
| <span class="source-line-no">709</span><span id="line-709"> }</span> |
| <span class="source-line-no">710</span><span id="line-710"></span> |
| <span class="source-line-no">711</span><span id="line-711"> @Override</span> |
| <span class="source-line-no">712</span><span id="line-712"> public int size() {</span> |
| <span class="source-line-no">713</span><span id="line-713"> return 0;</span> |
| <span class="source-line-no">714</span><span id="line-714"> }</span> |
| <span class="source-line-no">715</span><span id="line-715"> };</span> |
| <span class="source-line-no">716</span><span id="line-716"></span> |
| <span class="source-line-no">717</span><span id="line-717"> protected boolean nextRow(ScannerContext scannerContext, Cell curRowCell) throws IOException {</span> |
| <span class="source-line-no">718</span><span id="line-718"> assert this.joinedContinuationRow == null : "Trying to go to next row during joinedHeap read.";</span> |
| <span class="source-line-no">719</span><span id="line-719"></span> |
| <span class="source-line-no">720</span><span id="line-720"> // Enable skipping row mode, which disables limits and skips tracking progress for all</span> |
| <span class="source-line-no">721</span><span id="line-721"> // but block size. We keep tracking block size because skipping a row in this way</span> |
| <span class="source-line-no">722</span><span id="line-722"> // might involve reading blocks along the way.</span> |
| <span class="source-line-no">723</span><span id="line-723"> scannerContext.setSkippingRow(true);</span> |
| <span class="source-line-no">724</span><span id="line-724"></span> |
| <span class="source-line-no">725</span><span id="line-725"> Cell next;</span> |
| <span class="source-line-no">726</span><span id="line-726"> while ((next = this.storeHeap.peek()) != null && CellUtil.matchingRows(next, curRowCell)) {</span> |
| <span class="source-line-no">727</span><span id="line-727"> // Check for thread interrupt status in case we have been signaled from</span> |
| <span class="source-line-no">728</span><span id="line-728"> // #interruptRegionOperation.</span> |
| <span class="source-line-no">729</span><span id="line-729"> region.checkInterrupt();</span> |
| <span class="source-line-no">730</span><span id="line-730"> this.storeHeap.next(MOCKED_LIST, scannerContext);</span> |
| <span class="source-line-no">731</span><span id="line-731"> }</span> |
| <span class="source-line-no">732</span><span id="line-732"></span> |
| <span class="source-line-no">733</span><span id="line-733"> scannerContext.setSkippingRow(false);</span> |
| <span class="source-line-no">734</span><span id="line-734"> resetFilters();</span> |
| <span class="source-line-no">735</span><span id="line-735"></span> |
| <span class="source-line-no">736</span><span id="line-736"> // Calling the hook in CP which allows it to do a fast forward</span> |
| <span class="source-line-no">737</span><span id="line-737"> return this.region.getCoprocessorHost() == null</span> |
| <span class="source-line-no">738</span><span id="line-738"> || this.region.getCoprocessorHost().postScannerFilterRow(this, curRowCell);</span> |
| <span class="source-line-no">739</span><span id="line-739"> }</span> |
| <span class="source-line-no">740</span><span id="line-740"></span> |
| <span class="source-line-no">741</span><span id="line-741"> protected boolean shouldStop(Cell currentRowCell) {</span> |
| <span class="source-line-no">742</span><span id="line-742"> if (currentRowCell == null) {</span> |
| <span class="source-line-no">743</span><span id="line-743"> return true;</span> |
| <span class="source-line-no">744</span><span id="line-744"> }</span> |
| <span class="source-line-no">745</span><span id="line-745"> if (stopRow == null || Bytes.equals(stopRow, HConstants.EMPTY_END_ROW)) {</span> |
| <span class="source-line-no">746</span><span id="line-746"> return false;</span> |
| <span class="source-line-no">747</span><span id="line-747"> }</span> |
| <span class="source-line-no">748</span><span id="line-748"> int c = comparator.compareRows(currentRowCell, stopRow, 0, stopRow.length);</span> |
| <span class="source-line-no">749</span><span id="line-749"> return c > 0 || (c == 0 && !includeStopRow);</span> |
| <span class="source-line-no">750</span><span id="line-750"> }</span> |
| <span class="source-line-no">751</span><span id="line-751"></span> |
| <span class="source-line-no">752</span><span id="line-752"> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",</span> |
| <span class="source-line-no">753</span><span id="line-753"> justification = "this method is only called inside close which is synchronized")</span> |
| <span class="source-line-no">754</span><span id="line-754"> private void closeInternal() {</span> |
| <span class="source-line-no">755</span><span id="line-755"> if (storeHeap != null) {</span> |
| <span class="source-line-no">756</span><span id="line-756"> storeHeap.close();</span> |
| <span class="source-line-no">757</span><span id="line-757"> storeHeap = null;</span> |
| <span class="source-line-no">758</span><span id="line-758"> }</span> |
| <span class="source-line-no">759</span><span id="line-759"> if (joinedHeap != null) {</span> |
| <span class="source-line-no">760</span><span id="line-760"> joinedHeap.close();</span> |
| <span class="source-line-no">761</span><span id="line-761"> joinedHeap = null;</span> |
| <span class="source-line-no">762</span><span id="line-762"> }</span> |
| <span class="source-line-no">763</span><span id="line-763"> // no need to synchronize here.</span> |
| <span class="source-line-no">764</span><span id="line-764"> scannerReadPoints.remove(this);</span> |
| <span class="source-line-no">765</span><span id="line-765"> this.filterClosed = true;</span> |
| <span class="source-line-no">766</span><span id="line-766"> }</span> |
| <span class="source-line-no">767</span><span id="line-767"></span> |
| <span class="source-line-no">768</span><span id="line-768"> @Override</span> |
| <span class="source-line-no">769</span><span id="line-769"> public synchronized void close() {</span> |
| <span class="source-line-no">770</span><span id="line-770"> TraceUtil.trace(this::closeInternal, () -> region.createRegionSpan("RegionScanner.close"));</span> |
| <span class="source-line-no">771</span><span id="line-771"> }</span> |
| <span class="source-line-no">772</span><span id="line-772"></span> |
| <span class="source-line-no">773</span><span id="line-773"> @Override</span> |
| <span class="source-line-no">774</span><span id="line-774"> public synchronized boolean reseek(byte[] row) throws IOException {</span> |
| <span class="source-line-no">775</span><span id="line-775"> return TraceUtil.trace(() -> {</span> |
| <span class="source-line-no">776</span><span id="line-776"> if (row == null) {</span> |
| <span class="source-line-no">777</span><span id="line-777"> throw new IllegalArgumentException("Row cannot be null.");</span> |
| <span class="source-line-no">778</span><span id="line-778"> }</span> |
| <span class="source-line-no">779</span><span id="line-779"> boolean result = false;</span> |
| <span class="source-line-no">780</span><span id="line-780"> region.startRegionOperation();</span> |
| <span class="source-line-no">781</span><span id="line-781"> ExtendedCell kv = PrivateCellUtil.createFirstOnRow(row, 0, (short) row.length);</span> |
| <span class="source-line-no">782</span><span id="line-782"> try {</span> |
| <span class="source-line-no">783</span><span id="line-783"> // use request seek to make use of the lazy seek option. See HBASE-5520</span> |
| <span class="source-line-no">784</span><span id="line-784"> result = this.storeHeap.requestSeek(kv, true, true);</span> |
| <span class="source-line-no">785</span><span id="line-785"> if (this.joinedHeap != null) {</span> |
| <span class="source-line-no">786</span><span id="line-786"> result = this.joinedHeap.requestSeek(kv, true, true) || result;</span> |
| <span class="source-line-no">787</span><span id="line-787"> }</span> |
| <span class="source-line-no">788</span><span id="line-788"> } finally {</span> |
| <span class="source-line-no">789</span><span id="line-789"> region.closeRegionOperation();</span> |
| <span class="source-line-no">790</span><span id="line-790"> }</span> |
| <span class="source-line-no">791</span><span id="line-791"> return result;</span> |
| <span class="source-line-no">792</span><span id="line-792"> }, () -> region.createRegionSpan("RegionScanner.reseek"));</span> |
| <span class="source-line-no">793</span><span id="line-793"> }</span> |
| <span class="source-line-no">794</span><span id="line-794"></span> |
| <span class="source-line-no">795</span><span id="line-795"> @Override</span> |
| <span class="source-line-no">796</span><span id="line-796"> public void shipped() throws IOException {</span> |
| <span class="source-line-no">797</span><span id="line-797"> if (storeHeap != null) {</span> |
| <span class="source-line-no">798</span><span id="line-798"> storeHeap.shipped();</span> |
| <span class="source-line-no">799</span><span id="line-799"> }</span> |
| <span class="source-line-no">800</span><span id="line-800"> if (joinedHeap != null) {</span> |
| <span class="source-line-no">801</span><span id="line-801"> joinedHeap.shipped();</span> |
| <span class="source-line-no">802</span><span id="line-802"> }</span> |
| <span class="source-line-no">803</span><span id="line-803"> }</span> |
| <span class="source-line-no">804</span><span id="line-804"></span> |
| <span class="source-line-no">805</span><span id="line-805"> @Override</span> |
| <span class="source-line-no">806</span><span id="line-806"> public void run() throws IOException {</span> |
| <span class="source-line-no">807</span><span id="line-807"> // This is the RPC callback method executed. We do the close in of the scanner in this</span> |
| <span class="source-line-no">808</span><span id="line-808"> // callback</span> |
| <span class="source-line-no">809</span><span id="line-809"> this.close();</span> |
| <span class="source-line-no">810</span><span id="line-810"> }</span> |
| <span class="source-line-no">811</span><span id="line-811">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
