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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/08/09 14:49:32 UTC
[14/27] hbase-site git commit: Published site at
c6ff1de7e2cc08c40785780a4acd65097c8281d9.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/89ac19a0/devapidocs/src-html/org/apache/hadoop/hbase/ipc/MasterFifoRpcScheduler.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<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.io.IOException;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.util.HashMap;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.concurrent.ArrayBlockingQueue;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.concurrent.TimeUnit;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.25"></a>
+<span class="sourceLineNo">026</span><a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.conf.Configuration;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.DaemonThreadFactory;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.slf4j.Logger;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.slf4j.LoggerFactory;<a name="line.32"></a>
+<span class="sourceLineNo">033</span><a name="line.33"></a>
+<span class="sourceLineNo">034</span>/**<a name="line.34"></a>
+<span class="sourceLineNo">035</span> * A special {@code }RpcScheduler} only used for master. This scheduler separates RegionServerReport<a name="line.35"></a>
+<span class="sourceLineNo">036</span> * requests to independent handlers to avoid these requests block other requests. To use this<a name="line.36"></a>
+<span class="sourceLineNo">037</span> * scheduler, please set "hbase.master.rpc.scheduler.factory.class" to<a name="line.37"></a>
+<span class="sourceLineNo">038</span> * "org.apache.hadoop.hbase.ipc.MasterFifoRpcScheduler".<a name="line.38"></a>
+<span class="sourceLineNo">039</span> */<a name="line.39"></a>
+<span class="sourceLineNo">040</span>@InterfaceAudience.Private<a name="line.40"></a>
+<span class="sourceLineNo">041</span>@InterfaceStability.Evolving<a name="line.41"></a>
+<span class="sourceLineNo">042</span>public class MasterFifoRpcScheduler extends FifoRpcScheduler {<a name="line.42"></a>
+<span class="sourceLineNo">043</span> private static final Logger LOG = LoggerFactory.getLogger(MasterFifoRpcScheduler.class);<a name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
+<span class="sourceLineNo">045</span> /**<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * Set RSReport requests handlers count when masters use MasterFifoRpcScheduler. The default value<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * is half of "hbase.regionserver.handler.count" value, but at least 1. The other handlers count<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * is "hbase.regionserver.handler.count" value minus RSReport handlers count, but at least 1 too.<a name="line.48"></a>
+<span class="sourceLineNo">049</span> */<a name="line.49"></a>
+<span class="sourceLineNo">050</span> public static final String MASTER_SERVER_REPORT_HANDLER_COUNT =<a name="line.50"></a>
+<span class="sourceLineNo">051</span> "hbase.master.server.report.handler.count";<a name="line.51"></a>
+<span class="sourceLineNo">052</span> private static final String REGION_SERVER_REPORT = "RegionServerReport";<a name="line.52"></a>
+<span class="sourceLineNo">053</span> private final int rsReportHandlerCount;<a name="line.53"></a>
+<span class="sourceLineNo">054</span> private final int rsRsreportMaxQueueLength;<a name="line.54"></a>
+<span class="sourceLineNo">055</span> private final AtomicInteger rsReportQueueSize = new AtomicInteger(0);<a name="line.55"></a>
+<span class="sourceLineNo">056</span> private ThreadPoolExecutor rsReportExecutor;<a name="line.56"></a>
+<span class="sourceLineNo">057</span><a name="line.57"></a>
+<span class="sourceLineNo">058</span> public MasterFifoRpcScheduler(Configuration conf, int callHandlerCount,<a name="line.58"></a>
+<span class="sourceLineNo">059</span> int rsReportHandlerCount) {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> super(conf, callHandlerCount);<a name="line.60"></a>
+<span class="sourceLineNo">061</span> this.rsReportHandlerCount = rsReportHandlerCount;<a name="line.61"></a>
+<span class="sourceLineNo">062</span> this.rsRsreportMaxQueueLength = conf.getInt(RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH,<a name="line.62"></a>
+<span class="sourceLineNo">063</span> rsReportHandlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);<a name="line.63"></a>
+<span class="sourceLineNo">064</span> }<a name="line.64"></a>
+<span class="sourceLineNo">065</span><a name="line.65"></a>
+<span class="sourceLineNo">066</span> @Override<a name="line.66"></a>
+<span class="sourceLineNo">067</span> public void start() {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> LOG.info(<a name="line.68"></a>
+<span class="sourceLineNo">069</span> "Using {} as call queue; handlerCount={}; maxQueueLength={}; rsReportHandlerCount={}; "<a name="line.69"></a>
+<span class="sourceLineNo">070</span> + "rsReportMaxQueueLength={}",<a name="line.70"></a>
+<span class="sourceLineNo">071</span> this.getClass().getSimpleName(), handlerCount, maxQueueLength, rsReportHandlerCount,<a name="line.71"></a>
+<span class="sourceLineNo">072</span> rsRsreportMaxQueueLength);<a name="line.72"></a>
+<span class="sourceLineNo">073</span> this.executor = new ThreadPoolExecutor(handlerCount, handlerCount, 60, TimeUnit.SECONDS,<a name="line.73"></a>
+<span class="sourceLineNo">074</span> new ArrayBlockingQueue<Runnable>(maxQueueLength),<a name="line.74"></a>
+<span class="sourceLineNo">075</span> new DaemonThreadFactory("MasterFifoRpcScheduler.call.handler"),<a name="line.75"></a>
+<span class="sourceLineNo">076</span> new ThreadPoolExecutor.CallerRunsPolicy());<a name="line.76"></a>
+<span class="sourceLineNo">077</span> this.rsReportExecutor = new ThreadPoolExecutor(rsReportHandlerCount, rsReportHandlerCount, 60,<a name="line.77"></a>
+<span class="sourceLineNo">078</span> TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(rsRsreportMaxQueueLength),<a name="line.78"></a>
+<span class="sourceLineNo">079</span> new DaemonThreadFactory("MasterFifoRpcScheduler.RSReport.handler"),<a name="line.79"></a>
+<span class="sourceLineNo">080</span> new ThreadPoolExecutor.CallerRunsPolicy());<a name="line.80"></a>
+<span class="sourceLineNo">081</span> }<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span> @Override<a name="line.83"></a>
+<span class="sourceLineNo">084</span> public void stop() {<a name="line.84"></a>
+<span class="sourceLineNo">085</span> this.executor.shutdown();<a name="line.85"></a>
+<span class="sourceLineNo">086</span> this.rsReportExecutor.shutdown();<a name="line.86"></a>
+<span class="sourceLineNo">087</span> }<a name="line.87"></a>
+<span class="sourceLineNo">088</span><a name="line.88"></a>
+<span class="sourceLineNo">089</span> @Override<a name="line.89"></a>
+<span class="sourceLineNo">090</span> public boolean dispatch(final CallRunner task) throws IOException, InterruptedException {<a name="line.90"></a>
+<span class="sourceLineNo">091</span> String method = getCallMethod(task);<a name="line.91"></a>
+<span class="sourceLineNo">092</span> if (rsReportExecutor != null && method != null && method.equals(REGION_SERVER_REPORT)) {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> return executeRpcCall(rsReportExecutor, rsReportQueueSize, task);<a name="line.93"></a>
+<span class="sourceLineNo">094</span> } else {<a name="line.94"></a>
+<span class="sourceLineNo">095</span> return executeRpcCall(executor, queueSize, task);<a name="line.95"></a>
+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span> }<a name="line.97"></a>
+<span class="sourceLineNo">098</span><a name="line.98"></a>
+<span class="sourceLineNo">099</span> @Override<a name="line.99"></a>
+<span class="sourceLineNo">100</span> public int getGeneralQueueLength() {<a name="line.100"></a>
+<span class="sourceLineNo">101</span> return executor.getQueue().size() + rsReportExecutor.getQueue().size();<a name="line.101"></a>
+<span class="sourceLineNo">102</span> }<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span> @Override<a name="line.104"></a>
+<span class="sourceLineNo">105</span> public int getActiveRpcHandlerCount() {<a name="line.105"></a>
+<span class="sourceLineNo">106</span> return executor.getActiveCount() + rsReportExecutor.getActiveCount();<a name="line.106"></a>
+<span class="sourceLineNo">107</span> }<a name="line.107"></a>
+<span class="sourceLineNo">108</span><a name="line.108"></a>
+<span class="sourceLineNo">109</span> @Override<a name="line.109"></a>
+<span class="sourceLineNo">110</span> public CallQueueInfo getCallQueueInfo() {<a name="line.110"></a>
+<span class="sourceLineNo">111</span> String queueName = "Master Fifo Queue";<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span> HashMap<String, Long> methodCount = new HashMap<>();<a name="line.113"></a>
+<span class="sourceLineNo">114</span> HashMap<String, Long> methodSize = new HashMap<>();<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span> CallQueueInfo callQueueInfo = new CallQueueInfo();<a name="line.116"></a>
+<span class="sourceLineNo">117</span> callQueueInfo.setCallMethodCount(queueName, methodCount);<a name="line.117"></a>
+<span class="sourceLineNo">118</span> callQueueInfo.setCallMethodSize(queueName, methodSize);<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
+<span class="sourceLineNo">120</span> updateMethodCountAndSizeByQueue(executor.getQueue(), methodCount, methodSize);<a name="line.120"></a>
+<span class="sourceLineNo">121</span> updateMethodCountAndSizeByQueue(rsReportExecutor.getQueue(), methodCount, methodSize);<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> return callQueueInfo;<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>
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+</html>