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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.Queue;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.conf.Configuration;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Abortable;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.conf.ConfigurationObserver;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.slf4j.Logger;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.slf4j.LoggerFactory;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hbase.thirdparty.com.google.protobuf.Message;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.Action;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MultiRequest;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateRequest;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.RegionAction;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanRequest;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span>/**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * RPC Executor that uses different queues for reads and writes. With the options to use different<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * queues/executors for gets and scans. Each handler has its own queue and there is no stealing.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>@InterfaceAudience.LimitedPrivate({ HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX })<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>@InterfaceStability.Evolving<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>public class RWQueueRpcExecutor extends RpcExecutor {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private static final Logger LOG = LoggerFactory.getLogger(RWQueueRpcExecutor.class);<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> public static final String CALL_QUEUE_READ_SHARE_CONF_KEY =<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> "hbase.ipc.server.callqueue.read.ratio";<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public static final String CALL_QUEUE_SCAN_SHARE_CONF_KEY =<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> "hbase.ipc.server.callqueue.scan.ratio";<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> private final QueueBalancer writeBalancer;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private final QueueBalancer readBalancer;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private final QueueBalancer scanBalancer;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private final int writeHandlersCount;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private final int readHandlersCount;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private final int scanHandlersCount;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private final int numWriteQueues;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private final int numReadQueues;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private final int numScanQueues;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private final AtomicInteger activeWriteHandlerCount = new AtomicInteger(0);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private final AtomicInteger activeReadHandlerCount = new AtomicInteger(0);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private final AtomicInteger activeScanHandlerCount = new AtomicInteger(0);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> public RWQueueRpcExecutor(final String name, final int handlerCount, final int maxQueueLength,<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> final PriorityFunction priority, final Configuration conf, final Abortable abortable) {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> super(name, handlerCount, maxQueueLength, priority, conf, abortable);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> float callqReadShare = getReadShare(conf);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> float callqScanShare = getScanShare(conf);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> numWriteQueues = calcNumWriters(this.numCallQueues, callqReadShare);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> writeHandlersCount = Math.max(numWriteQueues, calcNumWriters(handlerCount, callqReadShare));<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> int readQueues = calcNumReaders(this.numCallQueues, callqReadShare);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> int readHandlers = Math.max(readQueues, calcNumReaders(handlerCount, callqReadShare));<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> int scanHandlers = Math.max(0, (int) Math.floor(readHandlers * callqScanShare));<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> int scanQueues =<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> scanHandlers > 0 ? Math.max(1, (int) Math.floor(readQueues * callqScanShare)) : 0;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> if (scanQueues > 0) {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // if scanQueues > 0, the handler count of read should > 0, then we make readQueues >= 1<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> readQueues = Math.max(1, readQueues - scanQueues);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> readHandlers -= scanHandlers;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> } else {<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> scanQueues = 0;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> scanHandlers = 0;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> numReadQueues = readQueues;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> readHandlersCount = readHandlers;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> numScanQueues = scanQueues;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> scanHandlersCount = scanHandlers;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> initializeQueues(numWriteQueues);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> initializeQueues(numReadQueues);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> initializeQueues(numScanQueues);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> this.writeBalancer = getBalancer(name, conf, queues.subList(0, numWriteQueues));<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> this.readBalancer =<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> getBalancer(name, conf, queues.subList(numWriteQueues, numWriteQueues + numReadQueues));<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> this.scanBalancer = numScanQueues > 0<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> ? getBalancer(name, conf,<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> queues.subList(numWriteQueues + numReadQueues,<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> numWriteQueues + numReadQueues + numScanQueues))<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> : null;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> LOG.info(getName() + " writeQueues=" + numWriteQueues + " writeHandlers=" + writeHandlersCount<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> + " readQueues=" + numReadQueues + " readHandlers=" + readHandlersCount + " scanQueues="<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> + numScanQueues + " scanHandlers=" + scanHandlersCount);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> @Override<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> protected int computeNumCallQueues(final int handlerCount, final float callQueuesHandlersFactor) {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> // at least 1 read queue and 1 write queue<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return Math.max(2, (int) Math.round(handlerCount * callQueuesHandlersFactor));<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> @Override<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> protected void startHandlers(final int port) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> startHandlers(".write", writeHandlersCount, queues, 0, numWriteQueues, port,<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> activeWriteHandlerCount);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> startHandlers(".read", readHandlersCount, queues, numWriteQueues, numReadQueues, port,<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> activeReadHandlerCount);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> if (numScanQueues > 0) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> startHandlers(".scan", scanHandlersCount, queues, numWriteQueues + numReadQueues,<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> numScanQueues, port, activeScanHandlerCount);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> @Override<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public boolean dispatch(final CallRunner callTask) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> RpcCall call = callTask.getRpcCall();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return dispatchTo(isWriteRequest(call.getHeader(), call.getParam()),<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> shouldDispatchToScanQueue(callTask), callTask);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> protected boolean dispatchTo(boolean toWriteQueue, boolean toScanQueue,<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> final CallRunner callTask) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> int queueIndex;<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> if (toWriteQueue) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> queueIndex = writeBalancer.getNextQueue(callTask);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> } else if (toScanQueue) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> queueIndex = numWriteQueues + numReadQueues + scanBalancer.getNextQueue(callTask);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> } else {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> queueIndex = numWriteQueues + readBalancer.getNextQueue(callTask);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> }<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Queue<CallRunner> queue = queues.get(queueIndex);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> if (queue.size() >= currentQueueLimit) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> return false;<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> }<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> return queue.offer(callTask);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> }<a name="line.158"></a> |
| <span class="sourceLineNo">159</span><a name="line.159"></a> |
| <span class="sourceLineNo">160</span> @Override<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> public int getWriteQueueLength() {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> int length = 0;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> for (int i = 0; i < numWriteQueues; i++) {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> length += queues.get(i).size();<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> return length;<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> @Override<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> public int getReadQueueLength() {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> int length = 0;<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> for (int i = numWriteQueues; i < (numWriteQueues + numReadQueues); i++) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> length += queues.get(i).size();<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> return length;<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> @Override<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> public int getScanQueueLength() {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> int length = 0;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> for (int i = numWriteQueues + numReadQueues; i<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> < (numWriteQueues + numReadQueues + numScanQueues); i++) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> length += queues.get(i).size();<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> }<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> return length;<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> @Override<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> public int getActiveHandlerCount() {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> return activeWriteHandlerCount.get() + activeReadHandlerCount.get()<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> + activeScanHandlerCount.get();<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> @Override<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> public int getActiveWriteHandlerCount() {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> return activeWriteHandlerCount.get();<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> @Override<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> public int getActiveReadHandlerCount() {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> return activeReadHandlerCount.get();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> @Override<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> public int getActiveScanHandlerCount() {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> return activeScanHandlerCount.get();<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> protected boolean isWriteRequest(final RequestHeader header, final Message param) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // TODO: Is there a better way to do this?<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> if (param instanceof MultiRequest) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> MultiRequest multi = (MultiRequest) param;<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> for (RegionAction regionAction : multi.getRegionActionList()) {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> for (Action action : regionAction.getActionList()) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> if (action.hasMutation()) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> return true;<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> }<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if (param instanceof MutateRequest) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> return true;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> // Below here are methods for master. It's a pretty brittle version of this.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // Not sure that master actually needs a read/write queue since 90% of requests to<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> // master are writing to status or changing the meta table.<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> // All other read requests are admin generated and can be processed whenever.<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> // However changing that would require a pretty drastic change and should be done for<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> // the next major release and not as a fix for HBASE-14239<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> if (param instanceof RegionServerStatusProtos.ReportRegionStateTransitionRequest) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> return true;<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (param instanceof RegionServerStatusProtos.RegionServerStartupRequest) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> return true;<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> if (param instanceof RegionServerStatusProtos.RegionServerReportRequest) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return true;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> return false;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span><a name="line.241"></a> |
| <span class="sourceLineNo">242</span> QueueBalancer getWriteBalancer() {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> return writeBalancer;<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> QueueBalancer getReadBalancer() {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> return readBalancer;<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> QueueBalancer getScanBalancer() {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return scanBalancer;<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> private boolean isScanRequest(final RequestHeader header, final Message param) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> return param instanceof ScanRequest;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> protected boolean shouldDispatchToScanQueue(final CallRunner task) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> RpcCall call = task.getRpcCall();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return numScanQueues > 0 && isScanRequest(call.getHeader(), call.getParam());<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> protected float getReadShare(final Configuration conf) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> return conf.getFloat(CALL_QUEUE_READ_SHARE_CONF_KEY, 0);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<a name="line.265"></a> |
| <span class="sourceLineNo">266</span><a name="line.266"></a> |
| <span class="sourceLineNo">267</span> protected float getScanShare(final Configuration conf) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> return conf.getFloat(CALL_QUEUE_SCAN_SHARE_CONF_KEY, 0);<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> /*<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> * Calculate the number of writers based on the "total count" and the read share. You'll get at<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> * least one writer.<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> */<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> private static int calcNumWriters(final int count, final float readShare) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> return Math.max(1, count - Math.max(1, (int) Math.round(count * readShare)));<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span><a name="line.278"></a> |
| <span class="sourceLineNo">279</span> /*<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * Calculate the number of readers based on the "total count" and the read share. You'll get at<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> * least one reader.<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> */<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> private static int calcNumReaders(final int count, final float readShare) {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> return count - calcNumWriters(count, readShare);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> }<a name="line.285"></a> |
| <span class="sourceLineNo">286</span><a name="line.286"></a> |
| <span class="sourceLineNo">287</span> @Override<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> public void onConfigurationChange(Configuration conf) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> super.onConfigurationChange(conf);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> propagateBalancerConfigChange(writeBalancer, conf);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> propagateBalancerConfigChange(readBalancer, conf);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> propagateBalancerConfigChange(scanBalancer, conf);<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> private void propagateBalancerConfigChange(QueueBalancer balancer, Configuration conf) {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> if (balancer instanceof ConfigurationObserver) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> ((ConfigurationObserver) balancer).onConfigurationChange(conf);<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span>}<a name="line.300"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
