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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.ipc;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.ArrayList;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Collection;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.Comparator;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.Locale;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Map;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Optional;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.concurrent.BlockingQueue;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.concurrent.atomic.LongAdder;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.function.Function;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.stream.Collectors;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.Abortable;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HConstants;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.conf.ConfigurationObserver;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.BoundedPriorityBlockingQueue;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hbase.thirdparty.com.google.common.base.Strings;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hbase.thirdparty.com.google.protobuf.Descriptors;<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>/**<a name="line.50"></a>
<span class="sourceLineNo">051</span> * Runs the CallRunners passed here via {@link #dispatch(CallRunner)}. Subclass and add particular<a name="line.51"></a>
<span class="sourceLineNo">052</span> * scheduling behavior.<a name="line.52"></a>
<span class="sourceLineNo">053</span> */<a name="line.53"></a>
<span class="sourceLineNo">054</span>@InterfaceAudience.LimitedPrivate({ HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX })<a name="line.54"></a>
<span class="sourceLineNo">055</span>@InterfaceStability.Evolving<a name="line.55"></a>
<span class="sourceLineNo">056</span>public abstract class RpcExecutor {<a name="line.56"></a>
<span class="sourceLineNo">057</span> private static final Logger LOG = LoggerFactory.getLogger(RpcExecutor.class);<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span> protected static final int DEFAULT_CALL_QUEUE_SIZE_HARD_LIMIT = 250;<a name="line.59"></a>
<span class="sourceLineNo">060</span> public static final String CALL_QUEUE_HANDLER_FACTOR_CONF_KEY =<a name="line.60"></a>
<span class="sourceLineNo">061</span> "hbase.ipc.server.callqueue.handler.factor";<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> /** max delay in msec used to bound the de-prioritized requests */<a name="line.63"></a>
<span class="sourceLineNo">064</span> public static final String QUEUE_MAX_CALL_DELAY_CONF_KEY =<a name="line.64"></a>
<span class="sourceLineNo">065</span> "hbase.ipc.server.queue.max.call.delay";<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
<span class="sourceLineNo">068</span> * The default, 'fifo', has the least friction but is dumb. If set to 'deadline', uses a priority<a name="line.68"></a>
<span class="sourceLineNo">069</span> * queue and de-prioritizes long-running scans. Sorting by priority comes at a cost, reduced<a name="line.69"></a>
<span class="sourceLineNo">070</span> * throughput.<a name="line.70"></a>
<span class="sourceLineNo">071</span> */<a name="line.71"></a>
<span class="sourceLineNo">072</span> public static final String CALL_QUEUE_TYPE_CODEL_CONF_VALUE = "codel";<a name="line.72"></a>
<span class="sourceLineNo">073</span> public static final String CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE = "deadline";<a name="line.73"></a>
<span class="sourceLineNo">074</span> public static final String CALL_QUEUE_TYPE_FIFO_CONF_VALUE = "fifo";<a name="line.74"></a>
<span class="sourceLineNo">075</span> public static final String CALL_QUEUE_TYPE_PLUGGABLE_CONF_VALUE = "pluggable";<a name="line.75"></a>
<span class="sourceLineNo">076</span> public static final String CALL_QUEUE_TYPE_CONF_KEY = "hbase.ipc.server.callqueue.type";<a name="line.76"></a>
<span class="sourceLineNo">077</span> public static final String CALL_QUEUE_TYPE_CONF_DEFAULT = CALL_QUEUE_TYPE_FIFO_CONF_VALUE;<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> public static final String CALL_QUEUE_QUEUE_BALANCER_CLASS =<a name="line.79"></a>
<span class="sourceLineNo">080</span> "hbase.ipc.server.callqueue.balancer.class";<a name="line.80"></a>
<span class="sourceLineNo">081</span> public static final Class&lt;?&gt; CALL_QUEUE_QUEUE_BALANCER_CLASS_DEFAULT = RandomQueueBalancer.class;<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> // These 3 are only used by Codel executor<a name="line.83"></a>
<span class="sourceLineNo">084</span> public static final String CALL_QUEUE_CODEL_TARGET_DELAY =<a name="line.84"></a>
<span class="sourceLineNo">085</span> "hbase.ipc.server.callqueue.codel.target.delay";<a name="line.85"></a>
<span class="sourceLineNo">086</span> public static final String CALL_QUEUE_CODEL_INTERVAL =<a name="line.86"></a>
<span class="sourceLineNo">087</span> "hbase.ipc.server.callqueue.codel.interval";<a name="line.87"></a>
<span class="sourceLineNo">088</span> public static final String CALL_QUEUE_CODEL_LIFO_THRESHOLD =<a name="line.88"></a>
<span class="sourceLineNo">089</span> "hbase.ipc.server.callqueue.codel.lifo.threshold";<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span> public static final int CALL_QUEUE_CODEL_DEFAULT_TARGET_DELAY = 100;<a name="line.91"></a>
<span class="sourceLineNo">092</span> public static final int CALL_QUEUE_CODEL_DEFAULT_INTERVAL = 100;<a name="line.92"></a>
<span class="sourceLineNo">093</span> public static final double CALL_QUEUE_CODEL_DEFAULT_LIFO_THRESHOLD = 0.8;<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> public static final String PLUGGABLE_CALL_QUEUE_CLASS_NAME =<a name="line.95"></a>
<span class="sourceLineNo">096</span> "hbase.ipc.server.callqueue.pluggable.queue.class.name";<a name="line.96"></a>
<span class="sourceLineNo">097</span> public static final String PLUGGABLE_CALL_QUEUE_WITH_FAST_PATH_ENABLED =<a name="line.97"></a>
<span class="sourceLineNo">098</span> "hbase.ipc.server.callqueue.pluggable.queue.fast.path.enabled";<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span> private final LongAdder numGeneralCallsDropped = new LongAdder();<a name="line.100"></a>
<span class="sourceLineNo">101</span> private final LongAdder numLifoModeSwitches = new LongAdder();<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span> protected final int numCallQueues;<a name="line.103"></a>
<span class="sourceLineNo">104</span> protected final List&lt;BlockingQueue&lt;CallRunner&gt;&gt; queues;<a name="line.104"></a>
<span class="sourceLineNo">105</span> private final Class&lt;? extends BlockingQueue&gt; queueClass;<a name="line.105"></a>
<span class="sourceLineNo">106</span> private final Object[] queueInitArgs;<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> protected volatile int currentQueueLimit;<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span> private final AtomicInteger activeHandlerCount = new AtomicInteger(0);<a name="line.110"></a>
<span class="sourceLineNo">111</span> private final List&lt;RpcHandler&gt; handlers;<a name="line.111"></a>
<span class="sourceLineNo">112</span> private final int handlerCount;<a name="line.112"></a>
<span class="sourceLineNo">113</span> private final AtomicInteger failedHandlerCount = new AtomicInteger(0);<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> private String name;<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span> private final Configuration conf;<a name="line.117"></a>
<span class="sourceLineNo">118</span> private final Abortable abortable;<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span> public RpcExecutor(final String name, final int handlerCount, final int maxQueueLength,<a name="line.120"></a>
<span class="sourceLineNo">121</span> final PriorityFunction priority, final Configuration conf, final Abortable abortable) {<a name="line.121"></a>
<span class="sourceLineNo">122</span> this(name, handlerCount, conf.get(CALL_QUEUE_TYPE_CONF_KEY, CALL_QUEUE_TYPE_CONF_DEFAULT),<a name="line.122"></a>
<span class="sourceLineNo">123</span> maxQueueLength, priority, conf, abortable);<a name="line.123"></a>
<span class="sourceLineNo">124</span> }<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> public RpcExecutor(final String name, final int handlerCount, final String callQueueType,<a name="line.126"></a>
<span class="sourceLineNo">127</span> final int maxQueueLength, final PriorityFunction priority, final Configuration conf,<a name="line.127"></a>
<span class="sourceLineNo">128</span> final Abortable abortable) {<a name="line.128"></a>
<span class="sourceLineNo">129</span> this.name = Strings.nullToEmpty(name);<a name="line.129"></a>
<span class="sourceLineNo">130</span> this.conf = conf;<a name="line.130"></a>
<span class="sourceLineNo">131</span> this.abortable = abortable;<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span> float callQueuesHandlersFactor = this.conf.getFloat(CALL_QUEUE_HANDLER_FACTOR_CONF_KEY, 0.1f);<a name="line.133"></a>
<span class="sourceLineNo">134</span> if (<a name="line.134"></a>
<span class="sourceLineNo">135</span> Float.compare(callQueuesHandlersFactor, 1.0f) &gt; 0<a name="line.135"></a>
<span class="sourceLineNo">136</span> || Float.compare(0.0f, callQueuesHandlersFactor) &gt; 0<a name="line.136"></a>
<span class="sourceLineNo">137</span> ) {<a name="line.137"></a>
<span class="sourceLineNo">138</span> LOG.warn(<a name="line.138"></a>
<span class="sourceLineNo">139</span> CALL_QUEUE_HANDLER_FACTOR_CONF_KEY + " is *ILLEGAL*, it should be in range [0.0, 1.0]");<a name="line.139"></a>
<span class="sourceLineNo">140</span> // For callQueuesHandlersFactor &gt; 1.0, we just set it 1.0f.<a name="line.140"></a>
<span class="sourceLineNo">141</span> if (Float.compare(callQueuesHandlersFactor, 1.0f) &gt; 0) {<a name="line.141"></a>
<span class="sourceLineNo">142</span> LOG.warn("Set " + CALL_QUEUE_HANDLER_FACTOR_CONF_KEY + " 1.0f");<a name="line.142"></a>
<span class="sourceLineNo">143</span> callQueuesHandlersFactor = 1.0f;<a name="line.143"></a>
<span class="sourceLineNo">144</span> } else {<a name="line.144"></a>
<span class="sourceLineNo">145</span> // But for callQueuesHandlersFactor &lt; 0.0, following method #computeNumCallQueues<a name="line.145"></a>
<span class="sourceLineNo">146</span> // will compute max(1, -x) =&gt; 1 which has same effect of default value.<a name="line.146"></a>
<span class="sourceLineNo">147</span> LOG.warn("Set " + CALL_QUEUE_HANDLER_FACTOR_CONF_KEY + " default value 0.0f");<a name="line.147"></a>
<span class="sourceLineNo">148</span> }<a name="line.148"></a>
<span class="sourceLineNo">149</span> }<a name="line.149"></a>
<span class="sourceLineNo">150</span> this.numCallQueues = computeNumCallQueues(handlerCount, callQueuesHandlersFactor);<a name="line.150"></a>
<span class="sourceLineNo">151</span> this.queues = new ArrayList&lt;&gt;(this.numCallQueues);<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span> this.handlerCount = Math.max(handlerCount, this.numCallQueues);<a name="line.153"></a>
<span class="sourceLineNo">154</span> this.handlers = new ArrayList&lt;&gt;(this.handlerCount);<a name="line.154"></a>
<span class="sourceLineNo">155</span><a name="line.155"></a>
<span class="sourceLineNo">156</span> if (isDeadlineQueueType(callQueueType)) {<a name="line.156"></a>
<span class="sourceLineNo">157</span> this.name += ".Deadline";<a name="line.157"></a>
<span class="sourceLineNo">158</span> this.queueInitArgs =<a name="line.158"></a>
<span class="sourceLineNo">159</span> new Object[] { maxQueueLength, new CallPriorityComparator(conf, priority) };<a name="line.159"></a>
<span class="sourceLineNo">160</span> this.queueClass = BoundedPriorityBlockingQueue.class;<a name="line.160"></a>
<span class="sourceLineNo">161</span> } else if (isCodelQueueType(callQueueType)) {<a name="line.161"></a>
<span class="sourceLineNo">162</span> this.name += ".Codel";<a name="line.162"></a>
<span class="sourceLineNo">163</span> int codelTargetDelay =<a name="line.163"></a>
<span class="sourceLineNo">164</span> conf.getInt(CALL_QUEUE_CODEL_TARGET_DELAY, CALL_QUEUE_CODEL_DEFAULT_TARGET_DELAY);<a name="line.164"></a>
<span class="sourceLineNo">165</span> int codelInterval = conf.getInt(CALL_QUEUE_CODEL_INTERVAL, CALL_QUEUE_CODEL_DEFAULT_INTERVAL);<a name="line.165"></a>
<span class="sourceLineNo">166</span> double codelLifoThreshold =<a name="line.166"></a>
<span class="sourceLineNo">167</span> conf.getDouble(CALL_QUEUE_CODEL_LIFO_THRESHOLD, CALL_QUEUE_CODEL_DEFAULT_LIFO_THRESHOLD);<a name="line.167"></a>
<span class="sourceLineNo">168</span> this.queueInitArgs = new Object[] { maxQueueLength, codelTargetDelay, codelInterval,<a name="line.168"></a>
<span class="sourceLineNo">169</span> codelLifoThreshold, numGeneralCallsDropped, numLifoModeSwitches };<a name="line.169"></a>
<span class="sourceLineNo">170</span> this.queueClass = AdaptiveLifoCoDelCallQueue.class;<a name="line.170"></a>
<span class="sourceLineNo">171</span> } else if (isPluggableQueueType(callQueueType)) {<a name="line.171"></a>
<span class="sourceLineNo">172</span> Optional&lt;Class&lt;? extends BlockingQueue&lt;CallRunner&gt;&gt;&gt; pluggableQueueClass =<a name="line.172"></a>
<span class="sourceLineNo">173</span> getPluggableQueueClass();<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span> if (!pluggableQueueClass.isPresent()) {<a name="line.175"></a>
<span class="sourceLineNo">176</span> throw new PluggableRpcQueueNotFound(<a name="line.176"></a>
<span class="sourceLineNo">177</span> "Pluggable call queue failed to load and selected call" + " queue type required");<a name="line.177"></a>
<span class="sourceLineNo">178</span> } else {<a name="line.178"></a>
<span class="sourceLineNo">179</span> this.queueInitArgs = new Object[] { maxQueueLength, priority, conf };<a name="line.179"></a>
<span class="sourceLineNo">180</span> this.queueClass = pluggableQueueClass.get();<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span> } else {<a name="line.182"></a>
<span class="sourceLineNo">183</span> this.name += ".Fifo";<a name="line.183"></a>
<span class="sourceLineNo">184</span> this.queueInitArgs = new Object[] { maxQueueLength };<a name="line.184"></a>
<span class="sourceLineNo">185</span> this.queueClass = LinkedBlockingQueue.class;<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span> LOG.info(<a name="line.188"></a>
<span class="sourceLineNo">189</span> "Instantiated {} with queueClass={}; "<a name="line.189"></a>
<span class="sourceLineNo">190</span> + "numCallQueues={}, maxQueueLength={}, handlerCount={}",<a name="line.190"></a>
<span class="sourceLineNo">191</span> this.name, this.queueClass, this.numCallQueues, maxQueueLength, this.handlerCount);<a name="line.191"></a>
<span class="sourceLineNo">192</span> }<a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span> protected int computeNumCallQueues(final int handlerCount, final float callQueuesHandlersFactor) {<a name="line.194"></a>
<span class="sourceLineNo">195</span> return Math.max(1, Math.round(handlerCount * callQueuesHandlersFactor));<a name="line.195"></a>
<span class="sourceLineNo">196</span> }<a name="line.196"></a>
<span class="sourceLineNo">197</span><a name="line.197"></a>
<span class="sourceLineNo">198</span> /**<a name="line.198"></a>
<span class="sourceLineNo">199</span> * Return the {@link Descriptors.MethodDescriptor#getName()} from {@code callRunner} or "Unknown".<a name="line.199"></a>
<span class="sourceLineNo">200</span> */<a name="line.200"></a>
<span class="sourceLineNo">201</span> private static String getMethodName(final CallRunner callRunner) {<a name="line.201"></a>
<span class="sourceLineNo">202</span> return Optional.ofNullable(callRunner).map(CallRunner::getRpcCall).map(RpcCall::getMethod)<a name="line.202"></a>
<span class="sourceLineNo">203</span> .map(Descriptors.MethodDescriptor::getName).orElse("Unknown");<a name="line.203"></a>
<span class="sourceLineNo">204</span> }<a name="line.204"></a>
<span class="sourceLineNo">205</span><a name="line.205"></a>
<span class="sourceLineNo">206</span> /**<a name="line.206"></a>
<span class="sourceLineNo">207</span> * Return the {@link RpcCall#getSize()} from {@code callRunner} or 0L.<a name="line.207"></a>
<span class="sourceLineNo">208</span> */<a name="line.208"></a>
<span class="sourceLineNo">209</span> private static long getRpcCallSize(final CallRunner callRunner) {<a name="line.209"></a>
<span class="sourceLineNo">210</span> return Optional.ofNullable(callRunner).map(CallRunner::getRpcCall).map(RpcCall::getSize)<a name="line.210"></a>
<span class="sourceLineNo">211</span> .orElse(0L);<a name="line.211"></a>
<span class="sourceLineNo">212</span> }<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span> public Map&lt;String, Long&gt; getCallQueueCountsSummary() {<a name="line.214"></a>
<span class="sourceLineNo">215</span> return queues.stream().flatMap(Collection::stream).map(RpcExecutor::getMethodName)<a name="line.215"></a>
<span class="sourceLineNo">216</span> .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));<a name="line.216"></a>
<span class="sourceLineNo">217</span> }<a name="line.217"></a>
<span class="sourceLineNo">218</span><a name="line.218"></a>
<span class="sourceLineNo">219</span> public Map&lt;String, Long&gt; getCallQueueSizeSummary() {<a name="line.219"></a>
<span class="sourceLineNo">220</span> return queues.stream().flatMap(Collection::stream)<a name="line.220"></a>
<span class="sourceLineNo">221</span> .map(callRunner -&gt; new Pair&lt;&gt;(getMethodName(callRunner), getRpcCallSize(callRunner)))<a name="line.221"></a>
<span class="sourceLineNo">222</span> .collect(Collectors.groupingBy(Pair::getFirst, Collectors.summingLong(Pair::getSecond)));<a name="line.222"></a>
<span class="sourceLineNo">223</span> }<a name="line.223"></a>
<span class="sourceLineNo">224</span><a name="line.224"></a>
<span class="sourceLineNo">225</span> protected void initializeQueues(final int numQueues) {<a name="line.225"></a>
<span class="sourceLineNo">226</span> if (queueInitArgs.length &gt; 0) {<a name="line.226"></a>
<span class="sourceLineNo">227</span> currentQueueLimit = (int) queueInitArgs[0];<a name="line.227"></a>
<span class="sourceLineNo">228</span> queueInitArgs[0] = Math.max((int) queueInitArgs[0], DEFAULT_CALL_QUEUE_SIZE_HARD_LIMIT);<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
<span class="sourceLineNo">230</span> for (int i = 0; i &lt; numQueues; ++i) {<a name="line.230"></a>
<span class="sourceLineNo">231</span> queues.add(ReflectionUtils.newInstance(queueClass, queueInitArgs));<a name="line.231"></a>
<span class="sourceLineNo">232</span> }<a name="line.232"></a>
<span class="sourceLineNo">233</span> }<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span> public void start(final int port) {<a name="line.235"></a>
<span class="sourceLineNo">236</span> startHandlers(port);<a name="line.236"></a>
<span class="sourceLineNo">237</span> }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span> public void stop() {<a name="line.239"></a>
<span class="sourceLineNo">240</span> for (RpcHandler handler : handlers) {<a name="line.240"></a>
<span class="sourceLineNo">241</span> handler.stopRunning();<a name="line.241"></a>
<span class="sourceLineNo">242</span> handler.interrupt();<a name="line.242"></a>
<span class="sourceLineNo">243</span> }<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span> /** Add the request to the executor queue */<a name="line.246"></a>
<span class="sourceLineNo">247</span> public abstract boolean dispatch(final CallRunner callTask);<a name="line.247"></a>
<span class="sourceLineNo">248</span><a name="line.248"></a>
<span class="sourceLineNo">249</span> /** Returns the list of request queues */<a name="line.249"></a>
<span class="sourceLineNo">250</span> protected List&lt;BlockingQueue&lt;CallRunner&gt;&gt; getQueues() {<a name="line.250"></a>
<span class="sourceLineNo">251</span> return queues;<a name="line.251"></a>
<span class="sourceLineNo">252</span> }<a name="line.252"></a>
<span class="sourceLineNo">253</span><a name="line.253"></a>
<span class="sourceLineNo">254</span> protected void startHandlers(final int port) {<a name="line.254"></a>
<span class="sourceLineNo">255</span> List&lt;BlockingQueue&lt;CallRunner&gt;&gt; callQueues = getQueues();<a name="line.255"></a>
<span class="sourceLineNo">256</span> startHandlers(null, handlerCount, callQueues, 0, callQueues.size(), port, activeHandlerCount);<a name="line.256"></a>
<span class="sourceLineNo">257</span> }<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span> /**<a name="line.259"></a>
<span class="sourceLineNo">260</span> * Override if providing alternate Handler implementation.<a name="line.260"></a>
<span class="sourceLineNo">261</span> */<a name="line.261"></a>
<span class="sourceLineNo">262</span> protected RpcHandler getHandler(final String name, final double handlerFailureThreshhold,<a name="line.262"></a>
<span class="sourceLineNo">263</span> final int handlerCount, final BlockingQueue&lt;CallRunner&gt; q,<a name="line.263"></a>
<span class="sourceLineNo">264</span> final AtomicInteger activeHandlerCount, final AtomicInteger failedHandlerCount,<a name="line.264"></a>
<span class="sourceLineNo">265</span> final Abortable abortable) {<a name="line.265"></a>
<span class="sourceLineNo">266</span> return new RpcHandler(name, handlerFailureThreshhold, handlerCount, q, activeHandlerCount,<a name="line.266"></a>
<span class="sourceLineNo">267</span> failedHandlerCount, abortable);<a name="line.267"></a>
<span class="sourceLineNo">268</span> }<a name="line.268"></a>
<span class="sourceLineNo">269</span><a name="line.269"></a>
<span class="sourceLineNo">270</span> /**<a name="line.270"></a>
<span class="sourceLineNo">271</span> * Start up our handlers.<a name="line.271"></a>
<span class="sourceLineNo">272</span> */<a name="line.272"></a>
<span class="sourceLineNo">273</span> protected void startHandlers(final String nameSuffix, final int numHandlers,<a name="line.273"></a>
<span class="sourceLineNo">274</span> final List&lt;BlockingQueue&lt;CallRunner&gt;&gt; callQueues, final int qindex, final int qsize,<a name="line.274"></a>
<span class="sourceLineNo">275</span> final int port, final AtomicInteger activeHandlerCount) {<a name="line.275"></a>
<span class="sourceLineNo">276</span> final String threadPrefix = name + Strings.nullToEmpty(nameSuffix);<a name="line.276"></a>
<span class="sourceLineNo">277</span> double handlerFailureThreshhold = conf == null<a name="line.277"></a>
<span class="sourceLineNo">278</span> ? 1.0<a name="line.278"></a>
<span class="sourceLineNo">279</span> : conf.getDouble(HConstants.REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT,<a name="line.279"></a>
<span class="sourceLineNo">280</span> HConstants.DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT);<a name="line.280"></a>
<span class="sourceLineNo">281</span> for (int i = 0; i &lt; numHandlers; i++) {<a name="line.281"></a>
<span class="sourceLineNo">282</span> final int index = qindex + (i % qsize);<a name="line.282"></a>
<span class="sourceLineNo">283</span> String name = "RpcServer." + threadPrefix + ".handler=" + handlers.size() + ",queue=" + index<a name="line.283"></a>
<span class="sourceLineNo">284</span> + ",port=" + port;<a name="line.284"></a>
<span class="sourceLineNo">285</span> RpcHandler handler = getHandler(name, handlerFailureThreshhold, handlerCount,<a name="line.285"></a>
<span class="sourceLineNo">286</span> callQueues.get(index), activeHandlerCount, failedHandlerCount, abortable);<a name="line.286"></a>
<span class="sourceLineNo">287</span> handler.start();<a name="line.287"></a>
<span class="sourceLineNo">288</span> handlers.add(handler);<a name="line.288"></a>
<span class="sourceLineNo">289</span> }<a name="line.289"></a>
<span class="sourceLineNo">290</span> LOG.debug("Started handlerCount={} with threadPrefix={}, numCallQueues={}, port={}",<a name="line.290"></a>
<span class="sourceLineNo">291</span> handlers.size(), threadPrefix, qsize, port);<a name="line.291"></a>
<span class="sourceLineNo">292</span> }<a name="line.292"></a>
<span class="sourceLineNo">293</span><a name="line.293"></a>
<span class="sourceLineNo">294</span> /**<a name="line.294"></a>
<span class="sourceLineNo">295</span> * All requests go to the first queue, at index 0<a name="line.295"></a>
<span class="sourceLineNo">296</span> */<a name="line.296"></a>
<span class="sourceLineNo">297</span> private static final QueueBalancer ONE_QUEUE = val -&gt; 0;<a name="line.297"></a>
<span class="sourceLineNo">298</span><a name="line.298"></a>
<span class="sourceLineNo">299</span> public static QueueBalancer getBalancer(final String executorName, final Configuration conf,<a name="line.299"></a>
<span class="sourceLineNo">300</span> final List&lt;BlockingQueue&lt;CallRunner&gt;&gt; queues) {<a name="line.300"></a>
<span class="sourceLineNo">301</span> Preconditions.checkArgument(queues.size() &gt; 0, "Queue size is &lt;= 0, must be at least 1");<a name="line.301"></a>
<span class="sourceLineNo">302</span> if (queues.size() == 1) {<a name="line.302"></a>
<span class="sourceLineNo">303</span> return ONE_QUEUE;<a name="line.303"></a>
<span class="sourceLineNo">304</span> } else {<a name="line.304"></a>
<span class="sourceLineNo">305</span> Class&lt;?&gt; balancerClass =<a name="line.305"></a>
<span class="sourceLineNo">306</span> conf.getClass(CALL_QUEUE_QUEUE_BALANCER_CLASS, CALL_QUEUE_QUEUE_BALANCER_CLASS_DEFAULT);<a name="line.306"></a>
<span class="sourceLineNo">307</span> return (QueueBalancer) ReflectionUtils.newInstance(balancerClass, conf, executorName, queues);<a name="line.307"></a>
<span class="sourceLineNo">308</span> }<a name="line.308"></a>
<span class="sourceLineNo">309</span> }<a name="line.309"></a>
<span class="sourceLineNo">310</span><a name="line.310"></a>
<span class="sourceLineNo">311</span> /**<a name="line.311"></a>
<span class="sourceLineNo">312</span> * Comparator used by the "normal callQueue" if DEADLINE_CALL_QUEUE_CONF_KEY is set to true. It<a name="line.312"></a>
<span class="sourceLineNo">313</span> * uses the calculated "deadline" e.g. to deprioritize long-running job If multiple requests have<a name="line.313"></a>
<span class="sourceLineNo">314</span> * the same deadline BoundedPriorityBlockingQueue will order them in FIFO (first-in-first-out)<a name="line.314"></a>
<span class="sourceLineNo">315</span> * manner.<a name="line.315"></a>
<span class="sourceLineNo">316</span> */<a name="line.316"></a>
<span class="sourceLineNo">317</span> private static class CallPriorityComparator implements Comparator&lt;CallRunner&gt; {<a name="line.317"></a>
<span class="sourceLineNo">318</span> private final static int DEFAULT_MAX_CALL_DELAY = 5000;<a name="line.318"></a>
<span class="sourceLineNo">319</span><a name="line.319"></a>
<span class="sourceLineNo">320</span> private final PriorityFunction priority;<a name="line.320"></a>
<span class="sourceLineNo">321</span> private final int maxDelay;<a name="line.321"></a>
<span class="sourceLineNo">322</span><a name="line.322"></a>
<span class="sourceLineNo">323</span> public CallPriorityComparator(final Configuration conf, final PriorityFunction priority) {<a name="line.323"></a>
<span class="sourceLineNo">324</span> this.priority = priority;<a name="line.324"></a>
<span class="sourceLineNo">325</span> this.maxDelay = conf.getInt(QUEUE_MAX_CALL_DELAY_CONF_KEY, DEFAULT_MAX_CALL_DELAY);<a name="line.325"></a>
<span class="sourceLineNo">326</span> }<a name="line.326"></a>
<span class="sourceLineNo">327</span><a name="line.327"></a>
<span class="sourceLineNo">328</span> @Override<a name="line.328"></a>
<span class="sourceLineNo">329</span> public int compare(CallRunner a, CallRunner b) {<a name="line.329"></a>
<span class="sourceLineNo">330</span> RpcCall callA = a.getRpcCall();<a name="line.330"></a>
<span class="sourceLineNo">331</span> RpcCall callB = b.getRpcCall();<a name="line.331"></a>
<span class="sourceLineNo">332</span> long deadlineA = priority.getDeadline(callA.getHeader(), callA.getParam());<a name="line.332"></a>
<span class="sourceLineNo">333</span> long deadlineB = priority.getDeadline(callB.getHeader(), callB.getParam());<a name="line.333"></a>
<span class="sourceLineNo">334</span> deadlineA = callA.getReceiveTime() + Math.min(deadlineA, maxDelay);<a name="line.334"></a>
<span class="sourceLineNo">335</span> deadlineB = callB.getReceiveTime() + Math.min(deadlineB, maxDelay);<a name="line.335"></a>
<span class="sourceLineNo">336</span> return Long.compare(deadlineA, deadlineB);<a name="line.336"></a>
<span class="sourceLineNo">337</span> }<a name="line.337"></a>
<span class="sourceLineNo">338</span> }<a name="line.338"></a>
<span class="sourceLineNo">339</span><a name="line.339"></a>
<span class="sourceLineNo">340</span> public static boolean isDeadlineQueueType(final String callQueueType) {<a name="line.340"></a>
<span class="sourceLineNo">341</span> return callQueueType.equals(CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE);<a name="line.341"></a>
<span class="sourceLineNo">342</span> }<a name="line.342"></a>
<span class="sourceLineNo">343</span><a name="line.343"></a>
<span class="sourceLineNo">344</span> public static boolean isCodelQueueType(final String callQueueType) {<a name="line.344"></a>
<span class="sourceLineNo">345</span> return callQueueType.equals(CALL_QUEUE_TYPE_CODEL_CONF_VALUE);<a name="line.345"></a>
<span class="sourceLineNo">346</span> }<a name="line.346"></a>
<span class="sourceLineNo">347</span><a name="line.347"></a>
<span class="sourceLineNo">348</span> public static boolean isFifoQueueType(final String callQueueType) {<a name="line.348"></a>
<span class="sourceLineNo">349</span> return callQueueType.equals(CALL_QUEUE_TYPE_FIFO_CONF_VALUE);<a name="line.349"></a>
<span class="sourceLineNo">350</span> }<a name="line.350"></a>
<span class="sourceLineNo">351</span><a name="line.351"></a>
<span class="sourceLineNo">352</span> public static boolean isPluggableQueueType(String callQueueType) {<a name="line.352"></a>
<span class="sourceLineNo">353</span> return callQueueType.equals(CALL_QUEUE_TYPE_PLUGGABLE_CONF_VALUE);<a name="line.353"></a>
<span class="sourceLineNo">354</span> }<a name="line.354"></a>
<span class="sourceLineNo">355</span><a name="line.355"></a>
<span class="sourceLineNo">356</span> public static boolean isPluggableQueueWithFastPath(String callQueueType, Configuration conf) {<a name="line.356"></a>
<span class="sourceLineNo">357</span> return isPluggableQueueType(callQueueType)<a name="line.357"></a>
<span class="sourceLineNo">358</span> &amp;&amp; conf.getBoolean(PLUGGABLE_CALL_QUEUE_WITH_FAST_PATH_ENABLED, false);<a name="line.358"></a>
<span class="sourceLineNo">359</span> }<a name="line.359"></a>
<span class="sourceLineNo">360</span><a name="line.360"></a>
<span class="sourceLineNo">361</span> private Optional&lt;Class&lt;? extends BlockingQueue&lt;CallRunner&gt;&gt;&gt; getPluggableQueueClass() {<a name="line.361"></a>
<span class="sourceLineNo">362</span> String queueClassName = conf.get(PLUGGABLE_CALL_QUEUE_CLASS_NAME);<a name="line.362"></a>
<span class="sourceLineNo">363</span><a name="line.363"></a>
<span class="sourceLineNo">364</span> if (queueClassName == null) {<a name="line.364"></a>
<span class="sourceLineNo">365</span> LOG.error(<a name="line.365"></a>
<span class="sourceLineNo">366</span> "Pluggable queue class config at " + PLUGGABLE_CALL_QUEUE_CLASS_NAME + " was not found");<a name="line.366"></a>
<span class="sourceLineNo">367</span> return Optional.empty();<a name="line.367"></a>
<span class="sourceLineNo">368</span> }<a name="line.368"></a>
<span class="sourceLineNo">369</span><a name="line.369"></a>
<span class="sourceLineNo">370</span> try {<a name="line.370"></a>
<span class="sourceLineNo">371</span> Class&lt;?&gt; clazz = Class.forName(queueClassName);<a name="line.371"></a>
<span class="sourceLineNo">372</span><a name="line.372"></a>
<span class="sourceLineNo">373</span> if (BlockingQueue.class.isAssignableFrom(clazz)) {<a name="line.373"></a>
<span class="sourceLineNo">374</span> return Optional.of((Class&lt;? extends BlockingQueue&lt;CallRunner&gt;&gt;) clazz);<a name="line.374"></a>
<span class="sourceLineNo">375</span> } else {<a name="line.375"></a>
<span class="sourceLineNo">376</span> LOG.error(<a name="line.376"></a>
<span class="sourceLineNo">377</span> "Pluggable Queue class " + queueClassName + " does not extend BlockingQueue&lt;CallRunner&gt;");<a name="line.377"></a>
<span class="sourceLineNo">378</span> return Optional.empty();<a name="line.378"></a>
<span class="sourceLineNo">379</span> }<a name="line.379"></a>
<span class="sourceLineNo">380</span> } catch (ClassNotFoundException exception) {<a name="line.380"></a>
<span class="sourceLineNo">381</span> LOG.error("Could not find " + queueClassName + " on the classpath to load.");<a name="line.381"></a>
<span class="sourceLineNo">382</span> return Optional.empty();<a name="line.382"></a>
<span class="sourceLineNo">383</span> }<a name="line.383"></a>
<span class="sourceLineNo">384</span> }<a name="line.384"></a>
<span class="sourceLineNo">385</span><a name="line.385"></a>
<span class="sourceLineNo">386</span> public long getNumGeneralCallsDropped() {<a name="line.386"></a>
<span class="sourceLineNo">387</span> return numGeneralCallsDropped.longValue();<a name="line.387"></a>
<span class="sourceLineNo">388</span> }<a name="line.388"></a>
<span class="sourceLineNo">389</span><a name="line.389"></a>
<span class="sourceLineNo">390</span> public long getNumLifoModeSwitches() {<a name="line.390"></a>
<span class="sourceLineNo">391</span> return numLifoModeSwitches.longValue();<a name="line.391"></a>
<span class="sourceLineNo">392</span> }<a name="line.392"></a>
<span class="sourceLineNo">393</span><a name="line.393"></a>
<span class="sourceLineNo">394</span> public int getActiveHandlerCount() {<a name="line.394"></a>
<span class="sourceLineNo">395</span> return activeHandlerCount.get();<a name="line.395"></a>
<span class="sourceLineNo">396</span> }<a name="line.396"></a>
<span class="sourceLineNo">397</span><a name="line.397"></a>
<span class="sourceLineNo">398</span> public int getActiveWriteHandlerCount() {<a name="line.398"></a>
<span class="sourceLineNo">399</span> return 0;<a name="line.399"></a>
<span class="sourceLineNo">400</span> }<a name="line.400"></a>
<span class="sourceLineNo">401</span><a name="line.401"></a>
<span class="sourceLineNo">402</span> public int getActiveReadHandlerCount() {<a name="line.402"></a>
<span class="sourceLineNo">403</span> return 0;<a name="line.403"></a>
<span class="sourceLineNo">404</span> }<a name="line.404"></a>
<span class="sourceLineNo">405</span><a name="line.405"></a>
<span class="sourceLineNo">406</span> public int getActiveScanHandlerCount() {<a name="line.406"></a>
<span class="sourceLineNo">407</span> return 0;<a name="line.407"></a>
<span class="sourceLineNo">408</span> }<a name="line.408"></a>
<span class="sourceLineNo">409</span><a name="line.409"></a>
<span class="sourceLineNo">410</span> /** Returns the length of the pending queue */<a name="line.410"></a>
<span class="sourceLineNo">411</span> public int getQueueLength() {<a name="line.411"></a>
<span class="sourceLineNo">412</span> int length = 0;<a name="line.412"></a>
<span class="sourceLineNo">413</span> for (final BlockingQueue&lt;CallRunner&gt; queue : queues) {<a name="line.413"></a>
<span class="sourceLineNo">414</span> length += queue.size();<a name="line.414"></a>
<span class="sourceLineNo">415</span> }<a name="line.415"></a>
<span class="sourceLineNo">416</span> return length;<a name="line.416"></a>
<span class="sourceLineNo">417</span> }<a name="line.417"></a>
<span class="sourceLineNo">418</span><a name="line.418"></a>
<span class="sourceLineNo">419</span> public int getReadQueueLength() {<a name="line.419"></a>
<span class="sourceLineNo">420</span> return 0;<a name="line.420"></a>
<span class="sourceLineNo">421</span> }<a name="line.421"></a>
<span class="sourceLineNo">422</span><a name="line.422"></a>
<span class="sourceLineNo">423</span> public int getScanQueueLength() {<a name="line.423"></a>
<span class="sourceLineNo">424</span> return 0;<a name="line.424"></a>
<span class="sourceLineNo">425</span> }<a name="line.425"></a>
<span class="sourceLineNo">426</span><a name="line.426"></a>
<span class="sourceLineNo">427</span> public int getWriteQueueLength() {<a name="line.427"></a>
<span class="sourceLineNo">428</span> return 0;<a name="line.428"></a>
<span class="sourceLineNo">429</span> }<a name="line.429"></a>
<span class="sourceLineNo">430</span><a name="line.430"></a>
<span class="sourceLineNo">431</span> public String getName() {<a name="line.431"></a>
<span class="sourceLineNo">432</span> return this.name;<a name="line.432"></a>
<span class="sourceLineNo">433</span> }<a name="line.433"></a>
<span class="sourceLineNo">434</span><a name="line.434"></a>
<span class="sourceLineNo">435</span> /**<a name="line.435"></a>
<span class="sourceLineNo">436</span> * Update current soft limit for executor's call queues<a name="line.436"></a>
<span class="sourceLineNo">437</span> * @param conf updated configuration<a name="line.437"></a>
<span class="sourceLineNo">438</span> */<a name="line.438"></a>
<span class="sourceLineNo">439</span> public void resizeQueues(Configuration conf) {<a name="line.439"></a>
<span class="sourceLineNo">440</span> String configKey = RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH;<a name="line.440"></a>
<span class="sourceLineNo">441</span> if (name != null) {<a name="line.441"></a>
<span class="sourceLineNo">442</span> if (name.toLowerCase(Locale.ROOT).contains("priority")) {<a name="line.442"></a>
<span class="sourceLineNo">443</span> configKey = RpcScheduler.IPC_SERVER_PRIORITY_MAX_CALLQUEUE_LENGTH;<a name="line.443"></a>
<span class="sourceLineNo">444</span> } else if (name.toLowerCase(Locale.ROOT).contains("replication")) {<a name="line.444"></a>
<span class="sourceLineNo">445</span> configKey = RpcScheduler.IPC_SERVER_REPLICATION_MAX_CALLQUEUE_LENGTH;<a name="line.445"></a>
<span class="sourceLineNo">446</span> } else if (name.toLowerCase(Locale.ROOT).contains("bulkload")) {<a name="line.446"></a>
<span class="sourceLineNo">447</span> configKey = RpcScheduler.IPC_SERVER_BULKLOAD_MAX_CALLQUEUE_LENGTH;<a name="line.447"></a>
<span class="sourceLineNo">448</span> }<a name="line.448"></a>
<span class="sourceLineNo">449</span> }<a name="line.449"></a>
<span class="sourceLineNo">450</span> final int queueLimit = currentQueueLimit;<a name="line.450"></a>
<span class="sourceLineNo">451</span> currentQueueLimit = conf.getInt(configKey, queueLimit);<a name="line.451"></a>
<span class="sourceLineNo">452</span> }<a name="line.452"></a>
<span class="sourceLineNo">453</span><a name="line.453"></a>
<span class="sourceLineNo">454</span> public void onConfigurationChange(Configuration conf) {<a name="line.454"></a>
<span class="sourceLineNo">455</span> // update CoDel Scheduler tunables<a name="line.455"></a>
<span class="sourceLineNo">456</span> int codelTargetDelay =<a name="line.456"></a>
<span class="sourceLineNo">457</span> conf.getInt(CALL_QUEUE_CODEL_TARGET_DELAY, CALL_QUEUE_CODEL_DEFAULT_TARGET_DELAY);<a name="line.457"></a>
<span class="sourceLineNo">458</span> int codelInterval = conf.getInt(CALL_QUEUE_CODEL_INTERVAL, CALL_QUEUE_CODEL_DEFAULT_INTERVAL);<a name="line.458"></a>
<span class="sourceLineNo">459</span> double codelLifoThreshold =<a name="line.459"></a>
<span class="sourceLineNo">460</span> conf.getDouble(CALL_QUEUE_CODEL_LIFO_THRESHOLD, CALL_QUEUE_CODEL_DEFAULT_LIFO_THRESHOLD);<a name="line.460"></a>
<span class="sourceLineNo">461</span><a name="line.461"></a>
<span class="sourceLineNo">462</span> for (BlockingQueue&lt;CallRunner&gt; queue : queues) {<a name="line.462"></a>
<span class="sourceLineNo">463</span> if (queue instanceof AdaptiveLifoCoDelCallQueue) {<a name="line.463"></a>
<span class="sourceLineNo">464</span> ((AdaptiveLifoCoDelCallQueue) queue).updateTunables(codelTargetDelay, codelInterval,<a name="line.464"></a>
<span class="sourceLineNo">465</span> codelLifoThreshold);<a name="line.465"></a>
<span class="sourceLineNo">466</span> } else if (queue instanceof ConfigurationObserver) {<a name="line.466"></a>
<span class="sourceLineNo">467</span> ((ConfigurationObserver) queue).onConfigurationChange(conf);<a name="line.467"></a>
<span class="sourceLineNo">468</span> }<a name="line.468"></a>
<span class="sourceLineNo">469</span> }<a name="line.469"></a>
<span class="sourceLineNo">470</span> }<a name="line.470"></a>
<span class="sourceLineNo">471</span>}<a name="line.471"></a>
</pre>
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