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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.apache.hadoop.hbase.master.balancer.HeterogeneousCostRulesTestHelper.DEFAULT_RULES_FILE_NAME;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.master.balancer.HeterogeneousCostRulesTestHelper.createRulesFile;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotNull;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertNull;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import static org.junit.Assert.assertTrue;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.IOException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.ArrayDeque;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Arrays;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Collections;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.List;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.Map;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.Queue;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Random;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.TreeMap;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.fs.FileSystem;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HBaseCommonTestingUtil;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HConstants;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ServerName;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.junit.BeforeClass;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.junit.ClassRule;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.junit.Test;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.junit.experimental.categories.Category;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.slf4j.Logger;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.slf4j.LoggerFactory;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span>@Category({ MasterTests.class, MediumTests.class })<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>public class TestStochasticLoadBalancerHeterogeneousCost extends StochasticBalancerTestBase {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> @ClassRule<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> HBaseClassTestRule.forClass(TestStochasticLoadBalancerHeterogeneousCost.class);<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private static final Logger LOG =<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> LoggerFactory.getLogger(TestStochasticLoadBalancerHeterogeneousCost.class);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static final double ALLOWED_WINDOW = 1.20;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final HBaseCommonTestingUtil HTU = new HBaseCommonTestingUtil();<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private static String RULES_FILE;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> @BeforeClass<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> public static void beforeAllTests() throws IOException {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> conf = HTU.getConfiguration();<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> conf.setFloat("hbase.master.balancer.stochastic.regionCountCost", 0);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> conf.setFloat("hbase.master.balancer.stochastic.primaryRegionCountCost", 0);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> conf.setFloat("hbase.master.balancer.stochastic.tableSkewCost", 0);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> conf.set(StochasticLoadBalancer.COST_FUNCTIONS_COST_FUNCTIONS_KEY,<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> HeterogeneousRegionCountCostFunction.class.getName());<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> // Need to ensure test dir has been created.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> assertTrue(FileSystem.get(HTU.getConfiguration()).mkdirs(HTU.getDataTestDir()));<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> RULES_FILE = HTU.getDataTestDir(DEFAULT_RULES_FILE_NAME).toString();<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> conf.set(HeterogeneousRegionCountCostFunction.HBASE_MASTER_BALANCER_HETEROGENEOUS_RULES_FILE,<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> RULES_FILE);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> loadBalancer = new StochasticLoadTestBalancer();<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> loadBalancer.setClusterInfoProvider(new DummyClusterInfoProvider(conf));<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> loadBalancer.initialize();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @Test<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public void testDefault() throws IOException {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> final List<String> rules = Collections.emptyList();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> final int numNodes = 2;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> final int numRegions = 300;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> final int numRegionsPerServer = 250;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // Initial state: { rs1:50 , rs0:250 }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> // Cluster can hold 300/400 regions (75%)<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> // Expected balanced Cluster: { rs0:150 , rs1:150 }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> this.testHeterogeneousWithCluster(numNodes, numRegions, numRegionsPerServer, rules);<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> @Test<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public void testOneGroup() throws IOException {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> final List<String> rules = Collections.singletonList("rs.* 100");<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> final int numNodes = 4;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> final int numRegions = 300;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> final int numRegionsPerServer = 30;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> // Initial state: { rs0:30 , rs1:30 , rs2:30 , rs3:210 }.<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> // The cluster can hold 300/400 regions (75%)<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> // Expected balanced Cluster: { rs0:75 , rs1:75 , rs2:75 , rs3:75 }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> this.testHeterogeneousWithCluster(numNodes, numRegions, numRegionsPerServer, rules);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> @Test<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public void testTwoGroups() throws IOException {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> final List<String> rules = Arrays.asList("rs[0-4] 200", "rs[5-9] 50");<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> final int numNodes = 10;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> final int numRegions = 500;<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> final int numRegionsPerServer = 50;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> // Initial state: { rs0:50 , rs1:50 , rs2:50 , rs3:50 , rs4:50 , rs5:50 , rs6:50 , rs7:50 ,<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> // rs8:50 , rs9:50 }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> // the cluster can hold 500/1250 regions (40%)<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> // Expected balanced Cluster: { rs5:20 , rs6:20 , rs7:20 , rs8:20 , rs9:20 , rs0:80 , rs1:80 ,<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> // rs2:80 , rs3:80 , rs4:80 }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> this.testHeterogeneousWithCluster(numNodes, numRegions, numRegionsPerServer, rules);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span><a name="line.128"></a> |
| <span class="sourceLineNo">129</span> @Test<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> public void testFourGroups() throws IOException {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> final List<String> rules = Arrays.asList("rs[1-3] 200", "rs[4-7] 250", "rs[8-9] 100");<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> final int numNodes = 10;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> final int numRegions = 800;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> final int numRegionsPerServer = 80;<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> // Initial state: { rs0:80 , rs1:80 , rs2:80 , rs3:80 , rs4:80 , rs5:80 , rs6:80 , rs7:80 ,<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> // rs8:80 , rs9:80 }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // Cluster can hold 800/2000 regions (40%)<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> // Expected balanced Cluster: { rs8:40 , rs9:40 , rs2:80 , rs3:80 , rs1:82 , rs0:94 , rs4:96 ,<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> // rs5:96 , rs6:96 , rs7:96 }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> this.testHeterogeneousWithCluster(numNodes, numRegions, numRegionsPerServer, rules);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> @Test<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> public void testOverloaded() throws IOException {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> final int numNodes = 2;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> final int numRegions = 120;<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> final int numRegionsPerServer = 60;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span><a name="line.150"></a> |
| <span class="sourceLineNo">151</span> createRulesFile(RULES_FILE);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> final Map<ServerName, List<RegionInfo>> serverMap =<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> this.createServerMap(numNodes, numRegions, numRegionsPerServer, 1, 1);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> final List<RegionPlan> plans =<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> loadBalancer.balanceTable(HConstants.ENSEMBLE_TABLE_NAME, serverMap);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> // As we disabled all the other cost functions, balancing only according to<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> // the heterogeneous cost function should return nothing.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> assertNull(plans);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> private void testHeterogeneousWithCluster(final int numNodes, final int numRegions,<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> final int numRegionsPerServer, final List<String> rules) throws IOException {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> createRulesFile(RULES_FILE, rules);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> final Map<ServerName, List<RegionInfo>> serverMap =<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> this.createServerMap(numNodes, numRegions, numRegionsPerServer, 1, 1);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> this.testWithCluster(serverMap, null, true, false);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> }<a name="line.168"></a> |
| <span class="sourceLineNo">169</span><a name="line.169"></a> |
| <span class="sourceLineNo">170</span> @Override<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> protected void testWithCluster(final Map<ServerName, List<RegionInfo>> serverMap,<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> final RackManager rackManager, final boolean assertFullyBalanced,<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> final boolean assertFullyBalancedForReplicas) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> final List<ServerAndLoad> list = this.convertToList(serverMap);<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> LOG.info("Mock Cluster : " + this.printMock(list) + " " + this.printStats(list));<a name="line.175"></a> |
| <span class="sourceLineNo">176</span><a name="line.176"></a> |
| <span class="sourceLineNo">177</span> loadBalancer.setRackManager(rackManager);<a name="line.177"></a> |
| <span class="sourceLineNo">178</span><a name="line.178"></a> |
| <span class="sourceLineNo">179</span> // Run the balancer.<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> final List<RegionPlan> plans =<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> loadBalancer.balanceTable(HConstants.ENSEMBLE_TABLE_NAME, serverMap);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> assertNotNull(plans);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span><a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // Check to see that this actually got to a stable place.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (assertFullyBalanced || assertFullyBalancedForReplicas) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> // Apply the plan to the mock cluster.<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> final List<ServerAndLoad> balancedCluster = this.reconcile(list, plans, serverMap);<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // Print out the cluster loads to make debugging easier.<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> LOG.info("Mock Balanced cluster : " + this.printMock(balancedCluster));<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (assertFullyBalanced) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> final List<RegionPlan> secondPlans =<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> loadBalancer.balanceTable(HConstants.ENSEMBLE_TABLE_NAME, serverMap);<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> assertNull(secondPlans);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> // create external cost function to retrieve limit<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> // for each RS<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> final HeterogeneousRegionCountCostFunction cf =<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> new HeterogeneousRegionCountCostFunction(conf);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> assertNotNull(cf);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> BalancerClusterState cluster = new BalancerClusterState(serverMap, null, null, null);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> cf.prepare(cluster);<a name="line.203"></a> |
| <span class="sourceLineNo">204</span><a name="line.204"></a> |
| <span class="sourceLineNo">205</span> // checking that we all hosts have a number of regions below their limit<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> for (final ServerAndLoad serverAndLoad : balancedCluster) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> final ServerName sn = serverAndLoad.getServerName();<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> final int numberRegions = serverAndLoad.getLoad();<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> final int limit = cf.findLimitForRS(sn);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span><a name="line.210"></a> |
| <span class="sourceLineNo">211</span> double usage = (double) numberRegions / (double) limit;<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> LOG.debug(<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> sn.getHostname() + ":" + numberRegions + "/" + limit + "(" + (usage * 100) + "%)");<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> // as the balancer is stochastic, we cannot check exactly the result of the balancing,<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> // hence the allowedWindow parameter<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> assertTrue("Host " + sn.getHostname() + " should be below "<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> + cf.overallUsage * ALLOWED_WINDOW * 100 + "%; " + cf.overallUsage + ", " + usage + ", "<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> + numberRegions + ", " + limit, usage <= cf.overallUsage * ALLOWED_WINDOW);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span><a name="line.222"></a> |
| <span class="sourceLineNo">223</span> if (assertFullyBalancedForReplicas) {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> this.assertRegionReplicaPlacement(serverMap, rackManager);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span><a name="line.228"></a> |
| <span class="sourceLineNo">229</span> @Override<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> protected Map<ServerName, List<RegionInfo>> createServerMap(int numNodes, int numRegions,<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> int numRegionsPerServer, int replication, int numTables) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> // construct a cluster of numNodes, having a total of numRegions. Each RS will hold<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> // numRegionsPerServer many regions except for the last one, which will host all the<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> // remaining regions<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> int[] cluster = new int[numNodes];<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> for (int i = 0; i < numNodes; i++) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> cluster[i] = numRegionsPerServer;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> cluster[cluster.length - 1] = numRegions - ((cluster.length - 1) * numRegionsPerServer);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> Map<ServerName, List<RegionInfo>> clusterState = mockClusterServers(cluster, numTables);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if (replication > 0) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> // replicate the regions to the same servers<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> for (List<RegionInfo> regions : clusterState.values()) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> int length = regions.size();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> for (int i = 0; i < length; i++) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> for (int r = 1; r < replication; r++) {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> regions.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(i), r));<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> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span><a name="line.252"></a> |
| <span class="sourceLineNo">253</span> return clusterState;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span><a name="line.255"></a> |
| <span class="sourceLineNo">256</span> @Override<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[] mockCluster,<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> int numTables) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> int numServers = mockCluster.length;<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> for (int i = 0; i < numServers; i++) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> int numRegions = mockCluster[i];<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> ServerAndLoad sal = createServer("rs" + i);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> List<RegionInfo> regions = randomRegions(numRegions, numTables);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> servers.put(sal.getServerName(), regions);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> return servers;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span><a name="line.269"></a> |
| <span class="sourceLineNo">270</span> private Queue<ServerName> serverQueue = new ArrayDeque<>();<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> private ServerAndLoad createServer(final String host) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> if (!this.serverQueue.isEmpty()) {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> ServerName sn = this.serverQueue.poll();<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> return new ServerAndLoad(sn, 0);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> Random rand = ThreadLocalRandom.current();<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> int port = rand.nextInt(60000);<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> long startCode = rand.nextLong();<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> ServerName sn = ServerName.valueOf(host, port, startCode);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> return new ServerAndLoad(sn, 0);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span><a name="line.283"></a> |
| <span class="sourceLineNo">284</span> static class FairRandomCandidateGenerator extends RandomCandidateGenerator {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> @Override<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> public BalanceAction pickRandomRegions(BalancerClusterState cluster, int thisServer,<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> int otherServer) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> if (thisServer < 0 || otherServer < 0) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> return BalanceAction.NULL_ACTION;<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> int thisRegion = pickRandomRegion(cluster, thisServer, 0.5);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> int otherRegion = pickRandomRegion(cluster, otherServer, 0.5);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> return getAction(thisServer, thisRegion, otherServer, otherRegion);<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <span class="sourceLineNo">298</span><a name="line.298"></a> |
| <span class="sourceLineNo">299</span> @Override<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> BalanceAction generate(BalancerClusterState cluster) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> return super.generate(cluster);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span><a name="line.304"></a> |
| <span class="sourceLineNo">305</span> static class StochasticLoadTestBalancer extends StochasticLoadBalancer {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> private FairRandomCandidateGenerator fairRandomCandidateGenerator =<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> new FairRandomCandidateGenerator();<a name="line.307"></a> |
| <span class="sourceLineNo">308</span><a name="line.308"></a> |
| <span class="sourceLineNo">309</span> @Override<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> protected CandidateGenerator getRandomGenerator() {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> return fairRandomCandidateGenerator;<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<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> |
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| </pre> |
| </div> |
| </body> |
| </html> |
