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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.master.balancer;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.junit.Assert.assertNotNull;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertNull;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertTrue;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.ArrayList;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.HashMap;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.HashSet;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.LinkedList;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Map.Entry;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.Queue;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.Random;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Set;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.SortedSet;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.TreeMap;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import java.util.TreeSet;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import java.util.stream.Collectors;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import java.util.stream.Stream;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.conf.Configuration;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ServerName;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.TableName;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.net.DNSToSwitchMapping;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.junit.Assert;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.junit.BeforeClass;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.slf4j.Logger;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.slf4j.LoggerFactory;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span>/**<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * Class used to be the base of unit tests on load balancers. It gives helper<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * methods to create maps of {@link ServerName} to lists of {@link RegionInfo}<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * and to check list of region plans.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> *<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>public class BalancerTestBase {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static final Logger LOG = LoggerFactory.getLogger(BalancerTestBase.class);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> static int regionId = 0;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> protected static Configuration conf;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> protected static StochasticLoadBalancer loadBalancer;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> @BeforeClass<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> public static void beforeAllTests() throws Exception {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> conf = HBaseConfiguration.create();<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> conf.setClass("hbase.util.ip.to.rack.determiner", MockMapping.class, DNSToSwitchMapping.class);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> conf.setFloat("hbase.master.balancer.stochastic.maxMovePercent", 0.75f);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> conf.setFloat("hbase.regions.slop", 0.0f);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> conf.setFloat("hbase.master.balancer.stochastic.localityCost", 0);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> loadBalancer = new StochasticLoadBalancer();<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> loadBalancer.setConf(conf);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> }<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> protected int[] largeCluster = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56 };<a name="line.92"></a> |
| <span class="sourceLineNo">093</span><a name="line.93"></a> |
| <span class="sourceLineNo">094</span> // int[testnum][servernumber] -> numregions<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> protected int[][] clusterStateMocks = new int[][]{<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> // 1 node<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> new int[]{0},<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> new int[]{1},<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> new int[]{10},<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> // 2 node<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> new int[]{0, 0},<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> new int[]{2, 0},<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> new int[]{2, 1},<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> new int[]{2, 2},<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> new int[]{2, 3},<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> new int[]{2, 4},<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> new int[]{1, 1},<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> new int[]{0, 1},<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> new int[]{10, 1},<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> new int[]{514, 1432},<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> new int[]{48, 53},<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> // 3 node<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> new int[]{0, 1, 2},<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> new int[]{1, 2, 3},<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> new int[]{0, 2, 2},<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> new int[]{0, 3, 0},<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> new int[]{0, 4, 0},<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> new int[]{20, 20, 0},<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> // 4 node<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> new int[]{0, 1, 2, 3},<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> new int[]{4, 0, 0, 0},<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> new int[]{5, 0, 0, 0},<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> new int[]{6, 6, 0, 0},<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> new int[]{6, 2, 0, 0},<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> new int[]{6, 1, 0, 0},<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> new int[]{6, 0, 0, 0},<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> new int[]{4, 4, 4, 7},<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> new int[]{4, 4, 4, 8},<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> new int[]{0, 0, 0, 7},<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> // 5 node<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> new int[]{1, 1, 1, 1, 4},<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // 6 nodes<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> new int[]{1500, 500, 500, 500, 10, 0},<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> new int[]{1500, 500, 500, 500, 500, 0},<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> // more nodes<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 10},<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> new int[]{6, 6, 5, 6, 6, 6, 6, 6, 6, 1},<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 54},<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 55},<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 56},<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 16},<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> new int[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 8},<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> new int[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 9},<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> new int[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 10},<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> new int[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 123},<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> new int[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 155},<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> new int[]{10, 7, 12, 8, 11, 10, 9, 14},<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> new int[]{13, 14, 6, 10, 10, 10, 8, 10},<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> new int[]{130, 14, 60, 10, 100, 10, 80, 10},<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> new int[]{130, 140, 60, 100, 100, 100, 80, 100},<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> new int[]{0, 5 , 5, 5, 5},<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> largeCluster,<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> };<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // This class is introduced because IP to rack resolution can be lengthy.<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> public static class MockMapping implements DNSToSwitchMapping {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> public MockMapping(Configuration conf) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> @Override<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> public List<String> resolve(List<String> names) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> return Stream.generate(() -> "rack").limit(names.size()).collect(Collectors.toList());<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // do not add @Override annotations here. It mighty break compilation with earlier Hadoops<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> public void reloadCachedMappings() {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // do not add @Override annotations here. It mighty break compilation with earlier Hadoops<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> public void reloadCachedMappings(List<String> arg0) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> }<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> * Invariant is that all servers have between floor(avg) and ceiling(avg)<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * number of regions.<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> */<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> public void assertClusterAsBalanced(List<ServerAndLoad> servers) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> int numServers = servers.size();<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> int numRegions = 0;<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> int maxRegions = 0;<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> int minRegions = Integer.MAX_VALUE;<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> for (ServerAndLoad server : servers) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> int nr = server.getLoad();<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> if (nr > maxRegions) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> maxRegions = nr;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> if (nr < minRegions) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> minRegions = nr;<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> numRegions += nr;<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> }<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> if (maxRegions - minRegions < 2) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> // less than 2 between max and min, can't balance<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> return;<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> int min = numRegions / numServers;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> int max = numRegions % numServers == 0 ? min : min + 1;<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> for (ServerAndLoad server : servers) {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> assertTrue("All servers should have a positive load. " + server, server.getLoad() >= 0);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> assertTrue("All servers should have load no more than " + max + ". " + server,<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> server.getLoad() <= max);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> assertTrue("All servers should have load no less than " + min + ". " + server,<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> server.getLoad() >= min);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> /**<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * Invariant is that all servers have between acceptable range<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * number of regions.<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> */<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public boolean assertClusterOverallAsBalanced(List<ServerAndLoad> servers, int tablenum) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> int numServers = servers.size();<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> int numRegions = 0;<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> int maxRegions = 0;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> int minRegions = Integer.MAX_VALUE;<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> for (ServerAndLoad server : servers) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> int nr = server.getLoad();<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> if (nr > maxRegions) {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> maxRegions = nr;<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> if (nr < minRegions) {<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> minRegions = nr;<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> numRegions += nr;<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if (maxRegions - minRegions < 2) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> // less than 2 between max and min, can't balance<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return true;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> int min = numRegions / numServers;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> int max = numRegions % numServers == 0 ? min : min + 1;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> for (ServerAndLoad server : servers) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> // The '5' in below is arbitrary.<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (server.getLoad() < 0 || server.getLoad() > max + (tablenum/2 + 5) ||<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> server.getLoad() < (min - tablenum/2 - 5)) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> LOG.warn("server={}, load={}, max={}, tablenum={}, min={}",<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> server.getServerName(), server.getLoad(), max, tablenum, min);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> return false;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> return true;<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> /**<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * Checks whether region replicas are not hosted on the same host.<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> */<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> public void assertRegionReplicaPlacement(Map<ServerName, List<RegionInfo>> serverMap, RackManager rackManager) {<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> TreeMap<String, Set<RegionInfo>> regionsPerHost = new TreeMap<>();<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> TreeMap<String, Set<RegionInfo>> regionsPerRack = new TreeMap<>();<a name="line.255"></a> |
| <span class="sourceLineNo">256</span><a name="line.256"></a> |
| <span class="sourceLineNo">257</span> for (Entry<ServerName, List<RegionInfo>> entry : serverMap.entrySet()) {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> String hostname = entry.getKey().getHostname();<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> Set<RegionInfo> infos = regionsPerHost.get(hostname);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> if (infos == null) {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> infos = new HashSet<>();<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> regionsPerHost.put(hostname, infos);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> for (RegionInfo info : entry.getValue()) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> RegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> if (!infos.add(primaryInfo)) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> Assert.fail("Two or more region replicas are hosted on the same host after balance");<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><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> if (rackManager == null) {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> return;<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> }<a name="line.275"></a> |
| <span class="sourceLineNo">276</span><a name="line.276"></a> |
| <span class="sourceLineNo">277</span> for (Entry<ServerName, List<RegionInfo>> entry : serverMap.entrySet()) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> String rack = rackManager.getRack(entry.getKey());<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> Set<RegionInfo> infos = regionsPerRack.get(rack);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> if (infos == null) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> infos = new HashSet<>();<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> regionsPerRack.put(rack, infos);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> for (RegionInfo info : entry.getValue()) {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> RegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> if (!infos.add(primaryInfo)) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> Assert.fail("Two or more region replicas are hosted on the same rack after balance");<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<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> protected String printStats(List<ServerAndLoad> servers) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> int numServers = servers.size();<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> int totalRegions = 0;<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> for (ServerAndLoad server : servers) {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> totalRegions += server.getLoad();<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> float average = (float) totalRegions / numServers;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> int max = (int) Math.ceil(average);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> int min = (int) Math.floor(average);<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> return "[srvr=" + numServers + " rgns=" + totalRegions + " avg=" + average + " max=" + max<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> + " min=" + min + "]";<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<a name="line.305"></a> |
| <span class="sourceLineNo">306</span><a name="line.306"></a> |
| <span class="sourceLineNo">307</span> protected List<ServerAndLoad> convertToList(final Map<ServerName, List<RegionInfo>> servers) {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> List<ServerAndLoad> list = new ArrayList<>(servers.size());<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> for (Map.Entry<ServerName, List<RegionInfo>> e : servers.entrySet()) {<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> list.add(new ServerAndLoad(e.getKey(), e.getValue().size()));<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> }<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> return list;<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> protected String printMock(List<ServerAndLoad> balancedCluster) {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> SortedSet<ServerAndLoad> sorted = new TreeSet<>(balancedCluster);<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> ServerAndLoad[] arr = sorted.toArray(new ServerAndLoad[sorted.size()]);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> StringBuilder sb = new StringBuilder(sorted.size() * 4 + 4);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> sb.append("{ ");<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> for (int i = 0; i < arr.length; i++) {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> if (i != 0) {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> sb.append(" , ");<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> sb.append(arr[i].getServerName().getHostname());<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> sb.append(":");<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> sb.append(arr[i].getLoad());<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> sb.append(" }");<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> return sb.toString();<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> /**<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * This assumes the RegionPlan HSI instances are the same ones in the map, so<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> * actually no need to even pass in the map, but I think it's clearer.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> *<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> * @param list<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> * @param plans<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> * @return a list of all added {@link ServerAndLoad} values.<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> */<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> protected List<ServerAndLoad> reconcile(List<ServerAndLoad> list,<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> List<RegionPlan> plans,<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> Map<ServerName, List<RegionInfo>> servers) {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> List<ServerAndLoad> result = new ArrayList<>(list.size());<a name="line.343"></a> |
| <span class="sourceLineNo">344</span><a name="line.344"></a> |
| <span class="sourceLineNo">345</span> Map<ServerName, ServerAndLoad> map = new HashMap<>(list.size());<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> for (ServerAndLoad sl : list) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> map.put(sl.getServerName(), sl);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> if (plans != null) {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> for (RegionPlan plan : plans) {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> ServerName source = plan.getSource();<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> updateLoad(map, source, -1);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> ServerName destination = plan.getDestination();<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> updateLoad(map, destination, +1);<a name="line.355"></a> |
| <span class="sourceLineNo">356</span><a name="line.356"></a> |
| <span class="sourceLineNo">357</span> servers.get(source).remove(plan.getRegionInfo());<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> servers.get(destination).add(plan.getRegionInfo());<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> result.clear();<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> result.addAll(map.values());<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> return result;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span><a name="line.365"></a> |
| <span class="sourceLineNo">366</span> protected void updateLoad(final Map<ServerName, ServerAndLoad> map,<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> final ServerName sn,<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> final int diff) {<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> ServerAndLoad sal = map.get(sn);<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> if (sal == null) sal = new ServerAndLoad(sn, 0);<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> sal = new ServerAndLoad(sn, sal.getLoad() + diff);<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> map.put(sn, sal);<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> }<a name="line.373"></a> |
| <span class="sourceLineNo">374</span><a name="line.374"></a> |
| <span class="sourceLineNo">375</span> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[] mockCluster) {<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> return mockClusterServers(mockCluster, -1);<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> }<a name="line.377"></a> |
| <span class="sourceLineNo">378</span><a name="line.378"></a> |
| <span class="sourceLineNo">379</span> protected BaseLoadBalancer.Cluster mockCluster(int[] mockCluster) {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return new BaseLoadBalancer.Cluster(<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> mockClusterServers(mockCluster, -1), null, null, null);<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span><a name="line.383"></a> |
| <span class="sourceLineNo">384</span> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[] mockCluster, int numTables) {<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> int numServers = mockCluster.length;<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> for (int i = 0; i < numServers; i++) {<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> int numRegions = mockCluster[i];<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> ServerAndLoad sal = randomServer(0);<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> List<RegionInfo> regions = randomRegions(numRegions, numTables);<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> servers.put(sal.getServerName(), regions);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> }<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> return servers;<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> protected TreeMap<ServerName, List<RegionInfo>> mockUniformClusterServers(int[] mockCluster) {<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> int numServers = mockCluster.length;<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> for (int i = 0; i < numServers; i++) {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> int numRegions = mockCluster[i];<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> ServerAndLoad sal = randomServer(0);<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> List<RegionInfo> regions = uniformRegions(numRegions);<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> servers.put(sal.getServerName(), regions);<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> }<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> return servers;<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span><a name="line.407"></a> |
| <span class="sourceLineNo">408</span> protected HashMap<TableName, TreeMap<ServerName, List<RegionInfo>>> mockClusterServersWithTables(Map<ServerName, List<RegionInfo>> clusterServers) {<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> HashMap<TableName, TreeMap<ServerName, List<RegionInfo>>> result = new HashMap<>();<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> for (Map.Entry<ServerName, List<RegionInfo>> entry : clusterServers.entrySet()) {<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> ServerName sal = entry.getKey();<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> List<RegionInfo> regions = entry.getValue();<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> for (RegionInfo hri : regions){<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> TreeMap<ServerName, List<RegionInfo>> servers = result.get(hri.getTable());<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> if (servers == null) {<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> servers = new TreeMap<>();<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> result.put(hri.getTable(), servers);<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> }<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> List<RegionInfo> hrilist = servers.get(sal);<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> if (hrilist == null) {<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> hrilist = new ArrayList<>();<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> servers.put(sal, hrilist);<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> }<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> hrilist.add(hri);<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> for(Map.Entry<TableName, TreeMap<ServerName, List<RegionInfo>>> entry : result.entrySet()){<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> for(ServerName srn : clusterServers.keySet()){<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> if (!entry.getValue().containsKey(srn)) entry.getValue().put(srn, new ArrayList<>());<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> }<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> return result;<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> private Queue<RegionInfo> regionQueue = new LinkedList<>();<a name="line.435"></a> |
| <span class="sourceLineNo">436</span><a name="line.436"></a> |
| <span class="sourceLineNo">437</span> protected List<RegionInfo> randomRegions(int numRegions) {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> return randomRegions(numRegions, -1);<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> }<a name="line.439"></a> |
| <span class="sourceLineNo">440</span><a name="line.440"></a> |
| <span class="sourceLineNo">441</span> protected List<RegionInfo> createRegions(int numRegions, TableName tableName) {<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> List<RegionInfo> regions = new ArrayList<>(numRegions);<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> byte[] start = new byte[16];<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> byte[] end = new byte[16];<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> Random rand = ThreadLocalRandom.current();<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> rand.nextBytes(start);<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> rand.nextBytes(end);<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> for (int i = 0; i < numRegions; i++) {<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> Bytes.putInt(start, 0, numRegions << 1);<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> Bytes.putInt(end, 0, (numRegions << 1) + 1);<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName)<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> .setStartKey(start)<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> .setEndKey(end)<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> .setSplit(false)<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> .build();<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> regions.add(hri);<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> }<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> return regions;<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> }<a name="line.459"></a> |
| <span class="sourceLineNo">460</span><a name="line.460"></a> |
| <span class="sourceLineNo">461</span> protected List<RegionInfo> randomRegions(int numRegions, int numTables) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> List<RegionInfo> regions = new ArrayList<>(numRegions);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> byte[] start = new byte[16];<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> byte[] end = new byte[16];<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> Random rand = ThreadLocalRandom.current();<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> rand.nextBytes(start);<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> rand.nextBytes(end);<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> for (int i = 0; i < numRegions; i++) {<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> if (!regionQueue.isEmpty()) {<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> regions.add(regionQueue.poll());<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> continue;<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> }<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> Bytes.putInt(start, 0, numRegions << 1);<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> Bytes.putInt(end, 0, (numRegions << 1) + 1);<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> TableName tableName =<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> TableName.valueOf("table" + (numTables > 0 ? rand.nextInt(numTables) : i));<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName)<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> .setStartKey(start)<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> .setEndKey(end)<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> .setSplit(false)<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> .setRegionId(regionId++)<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> .build();<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> regions.add(hri);<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> }<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> return regions;<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> }<a name="line.486"></a> |
| <span class="sourceLineNo">487</span><a name="line.487"></a> |
| <span class="sourceLineNo">488</span> protected List<RegionInfo> uniformRegions(int numRegions) {<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> List<RegionInfo> regions = new ArrayList<>(numRegions);<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> byte[] start = new byte[16];<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> byte[] end = new byte[16];<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> Random rand = ThreadLocalRandom.current();<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> rand.nextBytes(start);<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> rand.nextBytes(end);<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> for (int i = 0; i < numRegions; i++) {<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> Bytes.putInt(start, 0, numRegions << 1);<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> Bytes.putInt(end, 0, (numRegions << 1) + 1);<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> TableName tableName =<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> TableName.valueOf("table" + i);<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName)<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> .setStartKey(start)<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> .setEndKey(end)<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> .setSplit(false)<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> .build();<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> regions.add(hri);<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> }<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> return regions;<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> }<a name="line.508"></a> |
| <span class="sourceLineNo">509</span><a name="line.509"></a> |
| <span class="sourceLineNo">510</span> protected void returnRegions(List<RegionInfo> regions) {<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> regionQueue.addAll(regions);<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> }<a name="line.512"></a> |
| <span class="sourceLineNo">513</span><a name="line.513"></a> |
| <span class="sourceLineNo">514</span> private Queue<ServerName> serverQueue = new LinkedList<>();<a name="line.514"></a> |
| <span class="sourceLineNo">515</span><a name="line.515"></a> |
| <span class="sourceLineNo">516</span> protected ServerAndLoad randomServer(final int numRegionsPerServer) {<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> if (!this.serverQueue.isEmpty()) {<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> ServerName sn = this.serverQueue.poll();<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> return new ServerAndLoad(sn, numRegionsPerServer);<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> }<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> Random rand = ThreadLocalRandom.current();<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> String host = "srv" + rand.nextInt(Integer.MAX_VALUE);<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> int port = rand.nextInt(60000);<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> long startCode = rand.nextLong();<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> ServerName sn = ServerName.valueOf(host, port, startCode);<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> return new ServerAndLoad(sn, numRegionsPerServer);<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> }<a name="line.527"></a> |
| <span class="sourceLineNo">528</span><a name="line.528"></a> |
| <span class="sourceLineNo">529</span> protected List<ServerAndLoad> randomServers(int numServers, int numRegionsPerServer) {<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> List<ServerAndLoad> servers = new ArrayList<>(numServers);<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> for (int i = 0; i < numServers; i++) {<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> servers.add(randomServer(numRegionsPerServer));<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> }<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> return servers;<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> }<a name="line.535"></a> |
| <span class="sourceLineNo">536</span><a name="line.536"></a> |
| <span class="sourceLineNo">537</span> protected void returnServer(ServerName server) {<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> serverQueue.add(server);<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> }<a name="line.539"></a> |
| <span class="sourceLineNo">540</span><a name="line.540"></a> |
| <span class="sourceLineNo">541</span> protected void returnServers(List<ServerName> servers) {<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> this.serverQueue.addAll(servers);<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> }<a name="line.543"></a> |
| <span class="sourceLineNo">544</span><a name="line.544"></a> |
| <span class="sourceLineNo">545</span> protected void testWithCluster(int numNodes,<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> int numRegions,<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> int numRegionsPerServer,<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> int replication,<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> int numTables,<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> boolean assertFullyBalanced, boolean assertFullyBalancedForReplicas) {<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> testWithCluster(serverMap, null, assertFullyBalanced, assertFullyBalancedForReplicas);<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> }<a name="line.554"></a> |
| <span class="sourceLineNo">555</span><a name="line.555"></a> |
| <span class="sourceLineNo">556</span> protected void testWithCluster(Map<ServerName, List<RegionInfo>> serverMap,<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> RackManager rackManager, boolean assertFullyBalanced, boolean assertFullyBalancedForReplicas) {<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> LOG.info("Mock Cluster : " + printMock(list) + " " + printStats(list));<a name="line.559"></a> |
| <span class="sourceLineNo">560</span><a name="line.560"></a> |
| <span class="sourceLineNo">561</span> loadBalancer.setRackManager(rackManager);<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> // Run the balancer.<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable =<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> (Map) mockClusterServersWithTables(serverMap);<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> assertNotNull("Initial cluster balance should produce plans.", plans);<a name="line.566"></a> |
| <span class="sourceLineNo">567</span><a name="line.567"></a> |
| <span class="sourceLineNo">568</span> // Check to see that this actually got to a stable place.<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> if (assertFullyBalanced || assertFullyBalancedForReplicas) {<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> // Apply the plan to the mock cluster.<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, serverMap);<a name="line.571"></a> |
| <span class="sourceLineNo">572</span><a name="line.572"></a> |
| <span class="sourceLineNo">573</span> // Print out the cluster loads to make debugging easier.<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> LOG.info("Mock Balance : " + printMock(balancedCluster));<a name="line.574"></a> |
| <span class="sourceLineNo">575</span><a name="line.575"></a> |
| <span class="sourceLineNo">576</span> if (assertFullyBalanced) {<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> assertClusterAsBalanced(balancedCluster);<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> LoadOfAllTable = (Map) mockClusterServersWithTables(serverMap);<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> List<RegionPlan> secondPlans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> assertNull("Given a requirement to be fully balanced, second attempt at plans should " +<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> "produce none.", secondPlans);<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> }<a name="line.582"></a> |
| <span class="sourceLineNo">583</span><a name="line.583"></a> |
| <span class="sourceLineNo">584</span> if (assertFullyBalancedForReplicas) {<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> assertRegionReplicaPlacement(serverMap, rackManager);<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> }<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> }<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> }<a name="line.588"></a> |
| <span class="sourceLineNo">589</span><a name="line.589"></a> |
| <span class="sourceLineNo">590</span> protected Map<ServerName, List<RegionInfo>> createServerMap(int numNodes,<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> int numRegions,<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> int numRegionsPerServer,<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> int replication,<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> int numTables) {<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> //construct a cluster of numNodes, having a total of numRegions. Each RS will hold<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> //numRegionsPerServer many regions except for the last one, which will host all the<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> //remaining regions<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> int[] cluster = new int[numNodes];<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> for (int i =0; i < numNodes; i++) {<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> cluster[i] = numRegionsPerServer;<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> }<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> cluster[cluster.length - 1] = numRegions - ((cluster.length - 1) * numRegionsPerServer);<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> Map<ServerName, List<RegionInfo>> clusterState = mockClusterServers(cluster, numTables);<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> if (replication > 0) {<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> // replicate the regions to the same servers<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> for (List<RegionInfo> regions : clusterState.values()) {<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> int length = regions.size();<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> for (int i = 0; i < length; i++) {<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> for (int r = 1; r < replication ; r++) {<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> regions.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(i), r));<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> }<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> }<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> }<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> }<a name="line.614"></a> |
| <span class="sourceLineNo">615</span><a name="line.615"></a> |
| <span class="sourceLineNo">616</span> return clusterState;<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> }<a name="line.617"></a> |
| <span class="sourceLineNo">618</span><a name="line.618"></a> |
| <span class="sourceLineNo">619</span>}<a name="line.619"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
