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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.assertEquals;<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>import static org.mockito.Mockito.mock;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import static org.mockito.Mockito.when;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.ArrayList;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Collections;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.HashMap;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.LinkedHashMap;<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.Set;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.TreeMap;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.TreeSet;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.stream.Collectors;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.commons.lang3.ArrayUtils;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.conf.Configuration;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HBaseConfiguration;<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.TableName;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.MasterServices;<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.master.ServerManager;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.MoveRegionAction;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.net.DNSToSwitchMapping;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.junit.BeforeClass;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.junit.ClassRule;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.junit.Rule;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.junit.Test;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.junit.experimental.categories.Category;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.junit.rules.TestName;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.mockito.Mockito;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.slf4j.Logger;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.slf4j.LoggerFactory;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span>@Category({MasterTests.class, MediumTests.class})<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>public class TestBaseLoadBalancer extends BalancerTestBase {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> @ClassRule<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> HBaseClassTestRule.forClass(TestBaseLoadBalancer.class);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private static LoadBalancer loadBalancer;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private static final Logger LOG = LoggerFactory.getLogger(TestBaseLoadBalancer.class);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private static final ServerName master = ServerName.valueOf("fake-master", 0, 1L);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private static RackManager rackManager;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private static final int NUM_SERVERS = 15;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private static ServerName[] servers = new ServerName[NUM_SERVERS];<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> int[][] regionsAndServersMocks = new int[][] {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> // { num regions, num servers }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> new int[] { 0, 0 }, new int[] { 0, 1 }, new int[] { 1, 1 }, new int[] { 2, 1 },<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> new int[] { 10, 1 }, new int[] { 1, 2 }, new int[] { 2, 2 }, new int[] { 3, 2 },<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> new int[] { 1, 3 }, new int[] { 2, 3 }, new int[] { 3, 3 }, new int[] { 25, 3 },<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> new int[] { 2, 10 }, new int[] { 2, 100 }, new int[] { 12, 10 }, new int[] { 12, 100 }, };<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> @Rule<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> public TestName name = new TestName();<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> @BeforeClass<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public static void beforeAllTests() throws Exception {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> Configuration conf = HBaseConfiguration.create();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> conf.setClass("hbase.util.ip.to.rack.determiner", MockMapping.class, DNSToSwitchMapping.class);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> loadBalancer = new MockBalancer();<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> loadBalancer.setConf(conf);<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> MasterServices st = Mockito.mock(MasterServices.class);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> Mockito.when(st.getServerName()).thenReturn(master);<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> loadBalancer.setMasterServices(st);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> // Set up the rack topologies (5 machines per rack)<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> rackManager = Mockito.mock(RackManager.class);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> for (int i = 0; i < NUM_SERVERS; i++) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> servers[i] = ServerName.valueOf("foo"+i+":1234",-1);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> if (i < 5) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> Mockito.when(rackManager.getRack(servers[i])).thenReturn("rack1");<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> }<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> if (i >= 5 && i < 10) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> Mockito.when(rackManager.getRack(servers[i])).thenReturn("rack2");<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (i >= 10) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> Mockito.when(rackManager.getRack(servers[i])).thenReturn("rack3");<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> public static class MockBalancer extends BaseLoadBalancer {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> @Override<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> public List<RegionPlan><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> balanceCluster(Map<TableName, Map<ServerName, List<RegionInfo>>> loadOfAllTable) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> return null;<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> @Override<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> public List<RegionPlan> balanceTable(TableName tableName,<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> Map<ServerName, List<RegionInfo>> loadOfOneTable) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return null;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> /**<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * All regions have an assignment.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @param regions<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @param servers<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * @param assignments<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> */<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> private void assertImmediateAssignment(List<RegionInfo> regions, List<ServerName> servers,<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> Map<RegionInfo, ServerName> assignments) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> for (RegionInfo region : regions) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> assertTrue(assignments.containsKey(region));<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> }<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> /**<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * Tests the bulk assignment used during cluster startup.<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> *<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * Round-robin. Should yield a balanced cluster so same invariant as the load<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * balancer holds, all servers holding either floor(avg) or ceiling(avg).<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> *<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * @throws Exception<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> */<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> @Test<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> public void testBulkAssignment() throws Exception {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> List<ServerName> tmp = getListOfServerNames(randomServers(5, 0));<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> List<RegionInfo> hris = randomRegions(20);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> hris.add(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> tmp.add(master);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> Map<ServerName, List<RegionInfo>> plans = loadBalancer.roundRobinAssignment(hris, tmp);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> if (LoadBalancer.isTablesOnMaster(loadBalancer.getConf())) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> assertTrue(plans.get(master).contains(RegionInfoBuilder.FIRST_META_REGIONINFO));<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> assertEquals(1, plans.get(master).size());<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> int totalRegion = 0;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> for (List<RegionInfo> regions: plans.values()) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> totalRegion += regions.size();<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> assertEquals(hris.size(), totalRegion);<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> for (int[] mock : regionsAndServersMocks) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> LOG.debug("testBulkAssignment with " + mock[0] + " regions and " + mock[1] + " servers");<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> List<RegionInfo> regions = randomRegions(mock[0]);<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> List<ServerAndLoad> servers = randomServers(mock[1], 0);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> List<ServerName> list = getListOfServerNames(servers);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> Map<ServerName, List<RegionInfo>> assignments =<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> loadBalancer.roundRobinAssignment(regions, list);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> float average = (float) regions.size() / servers.size();<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> int min = (int) Math.floor(average);<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> int max = (int) Math.ceil(average);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> if (assignments != null && !assignments.isEmpty()) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> for (List<RegionInfo> regionList : assignments.values()) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> assertTrue(regionList.size() == min || regionList.size() == max);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> returnRegions(regions);<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> returnServers(list);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> /**<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> * Test the cluster startup bulk assignment which attempts to retain<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> * assignment info.<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * @throws Exception<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> */<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> @Test<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> public void testRetainAssignment() throws Exception {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> // Test simple case where all same servers are there<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> List<ServerAndLoad> servers = randomServers(10, 10);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> List<RegionInfo> regions = randomRegions(100);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> Map<RegionInfo, ServerName> existing = new TreeMap<>(RegionInfo.COMPARATOR);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> for (int i = 0; i < regions.size(); i++) {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> ServerName sn = servers.get(i % servers.size()).getServerName();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> // The old server would have had same host and port, but different<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> // start code!<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> ServerName snWithOldStartCode =<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> ServerName.valueOf(sn.getHostname(), sn.getPort(), sn.getStartcode() - 10);<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> existing.put(regions.get(i), snWithOldStartCode);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> List<ServerName> listOfServerNames = getListOfServerNames(servers);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> Map<ServerName, List<RegionInfo>> assignment =<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> loadBalancer.retainAssignment(existing, listOfServerNames);<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> assertRetainedAssignment(existing, listOfServerNames, assignment);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> // Include two new servers that were not there before<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> List<ServerAndLoad> servers2 = new ArrayList<>(servers);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> servers2.add(randomServer(10));<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> servers2.add(randomServer(10));<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> listOfServerNames = getListOfServerNames(servers2);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> assignment = loadBalancer.retainAssignment(existing, listOfServerNames);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> assertRetainedAssignment(existing, listOfServerNames, assignment);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span><a name="line.220"></a> |
| <span class="sourceLineNo">221</span> // Remove two of the servers that were previously there<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> List<ServerAndLoad> servers3 = new ArrayList<>(servers);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> servers3.remove(0);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> servers3.remove(0);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> listOfServerNames = getListOfServerNames(servers3);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> assignment = loadBalancer.retainAssignment(existing, listOfServerNames);<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> assertRetainedAssignment(existing, listOfServerNames, assignment);<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span><a name="line.229"></a> |
| <span class="sourceLineNo">230</span> @Test<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> public void testRandomAssignment() throws Exception {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> for (int i = 1; i != 5; ++i) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> LOG.info("run testRandomAssignment() with idle servers:" + i);<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> testRandomAssignment(i);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> private void testRandomAssignment(int numberOfIdleServers) throws Exception {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> assert numberOfIdleServers > 0;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> List<ServerName> idleServers = new ArrayList<>(numberOfIdleServers);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> for (int i = 0; i != numberOfIdleServers; ++i) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> idleServers.add(ServerName.valueOf("server-" + i, 1000, 1L));<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> }<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> List<ServerName> allServers = new ArrayList<>(idleServers.size() + 1);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> allServers.add(ServerName.valueOf("server-" + numberOfIdleServers, 1000, 1L));<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> allServers.addAll(idleServers);<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> LoadBalancer balancer = new MockBalancer() {<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> @Override<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> public boolean shouldBeOnMaster(RegionInfo region) {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> return false;<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> Configuration conf = HBaseConfiguration.create();<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> conf.setClass("hbase.util.ip.to.rack.determiner", MockMapping.class, DNSToSwitchMapping.class);<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> balancer.setConf(conf);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> ServerManager sm = Mockito.mock(ServerManager.class);<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> Mockito.when(sm.getOnlineServersListWithPredicator(allServers, BaseLoadBalancer.IDLE_SERVER_PREDICATOR))<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> .thenReturn(idleServers);<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> MasterServices services = Mockito.mock(MasterServices.class);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> Mockito.when(services.getServerManager()).thenReturn(sm);<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> balancer.setMasterServices(services);<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> RegionInfo hri1 = RegionInfoBuilder.newBuilder(TableName.valueOf(name.getMethodName()))<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> .setStartKey(Bytes.toBytes("key1"))<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> .setEndKey(Bytes.toBytes("key2"))<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> .setSplit(false)<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> .setRegionId(100)<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> .build();<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> assertNull(balancer.randomAssignment(hri1, Collections.EMPTY_LIST));<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> assertNull(balancer.randomAssignment(hri1, null));<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> for (int i = 0; i != 3; ++i) {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> ServerName sn = balancer.randomAssignment(hri1, allServers);<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> assertTrue("actual:" + sn + ", except:" + idleServers, idleServers.contains(sn));<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span><a name="line.275"></a> |
| <span class="sourceLineNo">276</span> @Test<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> public void testRegionAvailability() throws Exception {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> // Create a cluster with a few servers, assign them to specific racks<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> // then assign some regions. The tests should check whether moving a<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> // replica from one node to a specific other node or rack lowers the<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> // availability of the region or not<a name="line.281"></a> |
| <span class="sourceLineNo">282</span><a name="line.282"></a> |
| <span class="sourceLineNo">283</span> List<RegionInfo> list0 = new ArrayList<>();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> List<RegionInfo> list1 = new ArrayList<>();<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> List<RegionInfo> list2 = new ArrayList<>();<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> // create a region (region1)<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> RegionInfo hri1 = RegionInfoBuilder.newBuilder(TableName.valueOf(name.getMethodName()))<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> .setStartKey(Bytes.toBytes("key1"))<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> .setEndKey(Bytes.toBytes("key2"))<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> .setSplit(false)<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> .setRegionId(100)<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> .build();<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> // create a replica of the region (replica_of_region1)<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> RegionInfo hri2 = RegionReplicaUtil.getRegionInfoForReplica(hri1, 1);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> // create a second region (region2)<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> RegionInfo hri3 = RegionInfoBuilder.newBuilder(TableName.valueOf(name.getMethodName()))<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> .setStartKey(Bytes.toBytes("key2"))<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> .setEndKey(Bytes.toBytes("key3"))<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> .setSplit(false)<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> .setRegionId(101)<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> .build();<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> list0.add(hri1); //only region1<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> list1.add(hri2); //only replica_of_region1<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> list2.add(hri3); //only region2<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> Map<ServerName, List<RegionInfo>> clusterState = new LinkedHashMap<>();<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> clusterState.put(servers[0], list0); //servers[0] hosts region1<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> clusterState.put(servers[1], list1); //servers[1] hosts replica_of_region1<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> clusterState.put(servers[2], list2); //servers[2] hosts region2<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> // create a cluster with the above clusterState. The way in which the<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> // cluster is created (constructor code) would make sure the indices of<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> // the servers are in the order in which it is inserted in the clusterState<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> // map (linkedhashmap is important). A similar thing applies to the region lists<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> Cluster cluster = new Cluster(clusterState, null, null, rackManager);<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> // check whether a move of region1 from servers[0] to servers[1] would lower<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> // the availability of region1<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> assertTrue(cluster.wouldLowerAvailability(hri1, servers[1]));<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> // check whether a move of region1 from servers[0] to servers[2] would lower<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> // the availability of region1<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> // check whether a move of replica_of_region1 from servers[0] to servers[2] would lower<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> // the availability of replica_of_region1<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> assertTrue(!cluster.wouldLowerAvailability(hri2, servers[2]));<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> // check whether a move of region2 from servers[0] to servers[1] would lower<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> // the availability of region2<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> assertTrue(!cluster.wouldLowerAvailability(hri3, servers[1]));<a name="line.325"></a> |
| <span class="sourceLineNo">326</span><a name="line.326"></a> |
| <span class="sourceLineNo">327</span> // now lets have servers[1] host replica_of_region2<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> list1.add(RegionReplicaUtil.getRegionInfoForReplica(hri3, 1));<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> // create a new clusterState with the above change<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> cluster = new Cluster(clusterState, null, null, rackManager);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> // now check whether a move of a replica from servers[0] to servers[1] would lower<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> // the availability of region2<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> assertTrue(cluster.wouldLowerAvailability(hri3, servers[1]));<a name="line.333"></a> |
| <span class="sourceLineNo">334</span><a name="line.334"></a> |
| <span class="sourceLineNo">335</span> // start over again<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> clusterState.clear();<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> clusterState.put(servers[0], list0); //servers[0], rack1 hosts region1<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> clusterState.put(servers[5], list1); //servers[5], rack2 hosts replica_of_region1 and replica_of_region2<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> clusterState.put(servers[6], list2); //servers[6], rack2 hosts region2<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> clusterState.put(servers[10], new ArrayList<>()); //servers[10], rack3 hosts no region<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> // create a cluster with the above clusterState<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> cluster = new Cluster(clusterState, null, null, rackManager);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> // check whether a move of region1 from servers[0],rack1 to servers[6],rack2 would<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> // lower the availability<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> assertTrue(cluster.wouldLowerAvailability(hri1, servers[0]));<a name="line.346"></a> |
| <span class="sourceLineNo">347</span><a name="line.347"></a> |
| <span class="sourceLineNo">348</span> // now create a cluster without the rack manager<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> cluster = new Cluster(clusterState, null, null, null);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> // now repeat check whether a move of region1 from servers[0] to servers[6] would<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> // lower the availability<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> assertTrue(!cluster.wouldLowerAvailability(hri1, servers[6]));<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span><a name="line.354"></a> |
| <span class="sourceLineNo">355</span> @Test<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> public void testRegionAvailabilityWithRegionMoves() throws Exception {<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> List<RegionInfo> list0 = new ArrayList<>();<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> List<RegionInfo> list1 = new ArrayList<>();<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> List<RegionInfo> list2 = new ArrayList<>();<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> // create a region (region1)<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> RegionInfo hri1 = RegionInfoBuilder.newBuilder(TableName.valueOf(name.getMethodName()))<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> .setStartKey(Bytes.toBytes("key1"))<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> .setEndKey(Bytes.toBytes("key2"))<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> .setSplit(false)<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> .setRegionId(100)<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> .build();<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> // create a replica of the region (replica_of_region1)<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> RegionInfo hri2 = RegionReplicaUtil.getRegionInfoForReplica(hri1, 1);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> // create a second region (region2)<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> RegionInfo hri3 = RegionInfoBuilder.newBuilder(TableName.valueOf(name.getMethodName()))<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> .setStartKey(Bytes.toBytes("key2"))<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> .setEndKey(Bytes.toBytes("key3"))<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> .setSplit(false)<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> .setRegionId(101)<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> .build();<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> list0.add(hri1); //only region1<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> list1.add(hri2); //only replica_of_region1<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> list2.add(hri3); //only region2<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> Map<ServerName, List<RegionInfo>> clusterState = new LinkedHashMap<>();<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> clusterState.put(servers[0], list0); //servers[0] hosts region1<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> clusterState.put(servers[1], list1); //servers[1] hosts replica_of_region1<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> clusterState.put(servers[2], list2); //servers[2] hosts region2<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> // create a cluster with the above clusterState. The way in which the<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> // cluster is created (constructor code) would make sure the indices of<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> // the servers are in the order in which it is inserted in the clusterState<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> // map (linkedhashmap is important).<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> Cluster cluster = new Cluster(clusterState, null, null, rackManager);<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> // check whether moving region1 from servers[1] to servers[2] would lower availability<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));<a name="line.389"></a> |
| <span class="sourceLineNo">390</span><a name="line.390"></a> |
| <span class="sourceLineNo">391</span> // now move region1 from servers[0] to servers[2]<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> cluster.doAction(new MoveRegionAction(0, 0, 2));<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> // check that the numMaxRegionsPerTable for "table" has increased to 2<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> assertEquals(2, cluster.numMaxRegionsPerTable[0]);<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> // now repeat check whether moving region1 from servers[1] to servers[2]<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> // would lower availability<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> assertTrue(cluster.wouldLowerAvailability(hri1, servers[2]));<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> // start over again<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> clusterState.clear();<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> List<RegionInfo> list3 = new ArrayList<>();<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> RegionInfo hri4 = RegionReplicaUtil.getRegionInfoForReplica(hri3, 1);<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> list3.add(hri4);<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> clusterState.put(servers[0], list0); //servers[0], rack1 hosts region1<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> clusterState.put(servers[5], list1); //servers[5], rack2 hosts replica_of_region1<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> clusterState.put(servers[6], list2); //servers[6], rack2 hosts region2<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> clusterState.put(servers[12], list3); //servers[12], rack3 hosts replica_of_region2<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> // create a cluster with the above clusterState<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> cluster = new Cluster(clusterState, null, null, rackManager);<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> // check whether a move of replica_of_region2 from servers[12],rack3 to servers[0],rack1 would<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> // lower the availability<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> assertTrue(!cluster.wouldLowerAvailability(hri4, servers[0]));<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> // now move region2 from servers[6],rack2 to servers[0],rack1<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> cluster.doAction(new MoveRegionAction(2, 2, 0));<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> // now repeat check if replica_of_region2 from servers[12],rack3 to servers[0],rack1 would<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> // lower the availability<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> assertTrue(cluster.wouldLowerAvailability(hri3, servers[0]));<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> }<a name="line.418"></a> |
| <span class="sourceLineNo">419</span><a name="line.419"></a> |
| <span class="sourceLineNo">420</span> private List<ServerName> getListOfServerNames(final List<ServerAndLoad> sals) {<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> return sals.stream().map(ServerAndLoad::getServerName).collect(Collectors.toList());<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> }<a name="line.422"></a> |
| <span class="sourceLineNo">423</span><a name="line.423"></a> |
| <span class="sourceLineNo">424</span> /**<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> * Asserts a valid retained assignment plan.<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> * <p><a name="line.426"></a> |
| <span class="sourceLineNo">427</span> * Must meet the following conditions:<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> * <ul><a name="line.428"></a> |
| <span class="sourceLineNo">429</span> * <li>Every input region has an assignment, and to an online server<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> * <li>If a region had an existing assignment to a server with the same<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> * address a a currently online server, it will be assigned to it<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> * </ul><a name="line.432"></a> |
| <span class="sourceLineNo">433</span> * @param existing<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> * @param servers<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> * @param assignment<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> */<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> private void assertRetainedAssignment(Map<RegionInfo, ServerName> existing,<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> List<ServerName> servers, Map<ServerName, List<RegionInfo>> assignment) {<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> // Verify condition 1, every region assigned, and to online server<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> Set<ServerName> onlineServerSet = new TreeSet<>(servers);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> Set<RegionInfo> assignedRegions = new TreeSet<>(RegionInfo.COMPARATOR);<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> for (Map.Entry<ServerName, List<RegionInfo>> a : assignment.entrySet()) {<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> assertTrue("Region assigned to server that was not listed as online",<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> onlineServerSet.contains(a.getKey()));<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> for (RegionInfo r : a.getValue())<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> assignedRegions.add(r);<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> }<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> assertEquals(existing.size(), assignedRegions.size());<a name="line.448"></a> |
| <span class="sourceLineNo">449</span><a name="line.449"></a> |
| <span class="sourceLineNo">450</span> // Verify condition 2, if server had existing assignment, must have same<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> Set<String> onlineHostNames = new TreeSet<>();<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> for (ServerName s : servers) {<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> onlineHostNames.add(s.getHostname());<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> }<a name="line.454"></a> |
| <span class="sourceLineNo">455</span><a name="line.455"></a> |
| <span class="sourceLineNo">456</span> for (Map.Entry<ServerName, List<RegionInfo>> a : assignment.entrySet()) {<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> ServerName assignedTo = a.getKey();<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> for (RegionInfo r : a.getValue()) {<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> ServerName address = existing.get(r);<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> if (address != null && onlineHostNames.contains(address.getHostname())) {<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> // this region was prevously assigned somewhere, and that<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> // host is still around, then it should be re-assigned on the<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> // same host<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> assertEquals(address.getHostname(), assignedTo.getHostname());<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> }<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> }<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> }<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span><a name="line.469"></a> |
| <span class="sourceLineNo">470</span> @Test<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> public void testClusterServersWithSameHostPort() {<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> // tests whether the BaseLoadBalancer.Cluster can be constructed with servers<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> // sharing same host and port<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> List<ServerName> servers = getListOfServerNames(randomServers(10, 10));<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> List<RegionInfo> regions = randomRegions(101);<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> Map<ServerName, List<RegionInfo>> clusterState = new TreeMap<>();<a name="line.476"></a> |
| <span class="sourceLineNo">477</span><a name="line.477"></a> |
| <span class="sourceLineNo">478</span> assignRegions(regions, servers, clusterState);<a name="line.478"></a> |
| <span class="sourceLineNo">479</span><a name="line.479"></a> |
| <span class="sourceLineNo">480</span> // construct another list of servers, but sharing same hosts and ports<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> List<ServerName> oldServers = new ArrayList<>(servers.size());<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> for (ServerName sn : servers) {<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> // The old server would have had same host and port, but different start code!<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> oldServers.add(ServerName.valueOf(sn.getHostname(), sn.getPort(), sn.getStartcode() - 10));<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> }<a name="line.485"></a> |
| <span class="sourceLineNo">486</span><a name="line.486"></a> |
| <span class="sourceLineNo">487</span> regions = randomRegions(9); // some more regions<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> assignRegions(regions, oldServers, clusterState);<a name="line.488"></a> |
| <span class="sourceLineNo">489</span><a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // should not throw exception:<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> BaseLoadBalancer.Cluster cluster = new Cluster(clusterState, null, null, null);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> assertEquals(101 + 9, cluster.numRegions);<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> assertEquals(10, cluster.numServers); // only 10 servers because they share the same host + port<a name="line.493"></a> |
| <span class="sourceLineNo">494</span><a name="line.494"></a> |
| <span class="sourceLineNo">495</span> // test move<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> ServerName sn = oldServers.get(0);<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> int r0 = ArrayUtils.indexOf(cluster.regions, clusterState.get(sn).get(0));<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> int f0 = cluster.serversToIndex.get(sn.getAddress());<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> int t0 = cluster.serversToIndex.get(servers.get(1).getAddress());<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> cluster.doAction(new MoveRegionAction(r0, f0, t0));<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> }<a name="line.501"></a> |
| <span class="sourceLineNo">502</span><a name="line.502"></a> |
| <span class="sourceLineNo">503</span> private void assignRegions(List<RegionInfo> regions, List<ServerName> servers,<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> Map<ServerName, List<RegionInfo>> clusterState) {<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> for (int i = 0; i < regions.size(); i++) {<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> ServerName sn = servers.get(i % servers.size());<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> List<RegionInfo> regionsOfServer = clusterState.get(sn);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> if (regionsOfServer == null) {<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> regionsOfServer = new ArrayList<>(10);<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> clusterState.put(sn, regionsOfServer);<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> }<a name="line.511"></a> |
| <span class="sourceLineNo">512</span><a name="line.512"></a> |
| <span class="sourceLineNo">513</span> regionsOfServer.add(regions.get(i));<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> }<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> }<a name="line.515"></a> |
| <span class="sourceLineNo">516</span><a name="line.516"></a> |
| <span class="sourceLineNo">517</span> @Test<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> public void testClusterRegionLocations() {<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> // tests whether region locations are handled correctly in Cluster<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> List<ServerName> servers = getListOfServerNames(randomServers(10, 10));<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> List<RegionInfo> regions = randomRegions(101);<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> Map<ServerName, List<RegionInfo>> clusterState = new HashMap<>();<a name="line.522"></a> |
| <span class="sourceLineNo">523</span><a name="line.523"></a> |
| <span class="sourceLineNo">524</span> assignRegions(regions, servers, clusterState);<a name="line.524"></a> |
| <span class="sourceLineNo">525</span><a name="line.525"></a> |
| <span class="sourceLineNo">526</span> // mock block locality for some regions<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> RegionHDFSBlockLocationFinder locationFinder = mock(RegionHDFSBlockLocationFinder.class);<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> // block locality: region:0 => {server:0}<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> // region:1 => {server:0, server:1}<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> // region:42 => {server:4, server:9, server:5}<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> when(locationFinder.getTopBlockLocations(regions.get(0))).thenReturn(<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> Lists.newArrayList(servers.get(0)));<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> when(locationFinder.getTopBlockLocations(regions.get(1))).thenReturn(<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> Lists.newArrayList(servers.get(0), servers.get(1)));<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> when(locationFinder.getTopBlockLocations(regions.get(42))).thenReturn(<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> Lists.newArrayList(servers.get(4), servers.get(9), servers.get(5)));<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> when(locationFinder.getTopBlockLocations(regions.get(43))).thenReturn(<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> Lists.newArrayList(ServerName.valueOf("foo", 0, 0))); // this server does not exists in clusterStatus<a name="line.538"></a> |
| <span class="sourceLineNo">539</span><a name="line.539"></a> |
| <span class="sourceLineNo">540</span> BaseLoadBalancer.Cluster cluster = new Cluster(clusterState, null, locationFinder, null);<a name="line.540"></a> |
| <span class="sourceLineNo">541</span><a name="line.541"></a> |
| <span class="sourceLineNo">542</span> int r0 = ArrayUtils.indexOf(cluster.regions, regions.get(0)); // this is ok, it is just a test<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> int r1 = ArrayUtils.indexOf(cluster.regions, regions.get(1));<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> int r10 = ArrayUtils.indexOf(cluster.regions, regions.get(10));<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> int r42 = ArrayUtils.indexOf(cluster.regions, regions.get(42));<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> int r43 = ArrayUtils.indexOf(cluster.regions, regions.get(43));<a name="line.546"></a> |
| <span class="sourceLineNo">547</span><a name="line.547"></a> |
| <span class="sourceLineNo">548</span> int s0 = cluster.serversToIndex.get(servers.get(0).getAddress());<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> int s1 = cluster.serversToIndex.get(servers.get(1).getAddress());<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> int s4 = cluster.serversToIndex.get(servers.get(4).getAddress());<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> int s5 = cluster.serversToIndex.get(servers.get(5).getAddress());<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> int s9 = cluster.serversToIndex.get(servers.get(9).getAddress());<a name="line.552"></a> |
| <span class="sourceLineNo">553</span><a name="line.553"></a> |
| <span class="sourceLineNo">554</span> // region 0 locations<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> assertEquals(1, cluster.regionLocations[r0].length);<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> assertEquals(s0, cluster.regionLocations[r0][0]);<a name="line.556"></a> |
| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> // region 1 locations<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> assertEquals(2, cluster.regionLocations[r1].length);<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> assertEquals(s0, cluster.regionLocations[r1][0]);<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> assertEquals(s1, cluster.regionLocations[r1][1]);<a name="line.561"></a> |
| <span class="sourceLineNo">562</span><a name="line.562"></a> |
| <span class="sourceLineNo">563</span> // region 10 locations<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> assertEquals(0, cluster.regionLocations[r10].length);<a name="line.564"></a> |
| <span class="sourceLineNo">565</span><a name="line.565"></a> |
| <span class="sourceLineNo">566</span> // region 42 locations<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> assertEquals(3, cluster.regionLocations[r42].length);<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> assertEquals(s4, cluster.regionLocations[r42][0]);<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> assertEquals(s9, cluster.regionLocations[r42][1]);<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> assertEquals(s5, cluster.regionLocations[r42][2]);<a name="line.570"></a> |
| <span class="sourceLineNo">571</span><a name="line.571"></a> |
| <span class="sourceLineNo">572</span> // region 43 locations<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> assertEquals(1, cluster.regionLocations[r43].length);<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> assertEquals(-1, cluster.regionLocations[r43][0]);<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> }<a name="line.575"></a> |
| <span class="sourceLineNo">576</span>}<a name="line.576"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
