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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.assertNotNull;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNull;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertTrue;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import static org.mockito.Mockito.mock;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import static org.mockito.Mockito.when;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.ArrayList;<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.HashMap;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.HashSet;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.List;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.Map;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Queue;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.Set;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.TreeMap;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><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.ClusterMetrics;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.RegionMetrics;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ServerMetrics;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.ServerName;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.Size;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.MockNoopMasterServices;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.ServerLocalityCostFunction;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.junit.ClassRule;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.junit.Test;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.junit.experimental.categories.Category;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span>@Category({ MasterTests.class, MediumTests.class })<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>public class TestStochasticLoadBalancer extends BalancerTestBase {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> @ClassRule<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> HBaseClassTestRule.forClass(TestStochasticLoadBalancer.class);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final String REGION_KEY = "testRegion";<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> // Mapping of locality test -> expected locality<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private float[] expectedLocalities = {1.0f, 0.0f, 0.50f, 0.25f, 1.0f};<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> /**<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * Data set for testLocalityCost:<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * [test][0][0] = mapping of server to number of regions it hosts<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * [test][region + 1][0] = server that region is hosted on<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * [test][region + 1][server + 1] = locality for region on server<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private int[][][] clusterRegionLocationMocks = new int[][][]{<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> // Test 1: each region is entirely on server that hosts it<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> new int[][]{<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> new int[]{2, 1, 1},<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> new int[]{2, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> new int[]{0, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> new int[]{0, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> new int[]{1, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> },<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // Test 2: each region is 0% local on the server that hosts it<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> new int[][]{<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> new int[]{1, 2, 1},<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> new int[]{0, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> new int[]{1, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> new int[]{1, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> new int[]{2, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> },<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> // Test 3: each region is 25% local on the server that hosts it (and 50% locality is possible)<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> new int[][]{<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> new int[]{1, 2, 1},<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> new int[]{0, 25, 0, 50}, // region 0 is hosted and entirely local on server 2<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> new int[]{1, 50, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> new int[]{1, 50, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> new int[]{2, 0, 50, 25}, // region 1 is hosted and entirely on server 1<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> },<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> // Test 4: each region is 25% local on the server that hosts it (and 100% locality is possible)<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> new int[][]{<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> new int[]{1, 2, 1},<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> new int[]{0, 25, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> new int[]{1, 100, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> new int[]{1, 100, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> new int[]{2, 0, 100, 25}, // region 1 is hosted and entirely on server 1<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> },<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> // Test 5: each region is 75% local on the server that hosts it (and 75% locality is possible everywhere)<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> new int[][]{<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> new int[]{1, 2, 1},<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> new int[]{0, 75, 75, 75}, // region 0 is hosted and entirely local on server 2<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> new int[]{1, 75, 75, 75}, // region 1 is hosted and entirely on server 0<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> new int[]{1, 75, 75, 75}, // region 2 is hosted and entirely on server 0<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> new int[]{2, 75, 75, 75}, // region 1 is hosted and entirely on server 1<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> },<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> };<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> private ServerMetrics mockServerMetricsWithCpRequests(ServerName server,<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> List<RegionInfo> regionsOnServer,<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> long cpRequestCount) {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> ServerMetrics serverMetrics = mock(ServerMetrics.class);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> Map<byte[], RegionMetrics> regionLoadMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> for(RegionInfo info : regionsOnServer){<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> RegionMetrics rl = mock(RegionMetrics.class);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> when(rl.getReadRequestCount()).thenReturn(0L);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> when(rl.getCpRequestCount()).thenReturn(cpRequestCount);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> when(rl.getWriteRequestCount()).thenReturn(0L);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> when(rl.getMemStoreSize()).thenReturn(Size.ZERO);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> when(rl.getStoreFileSize()).thenReturn(Size.ZERO);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> regionLoadMap.put(info.getRegionName(), rl);<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> when(serverMetrics.getRegionMetrics()).thenReturn(regionLoadMap);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return serverMetrics;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> @Test<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> public void testCPRequestCost() {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> // in order to pass needsBalance judgement<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> conf.setFloat("hbase.master.balancer.stochastic.cpRequestCost", 10000f);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> loadBalancer.setConf(conf);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> // mock cluster State<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> Map<ServerName, List<RegionInfo>> clusterState = new HashMap<ServerName, List<RegionInfo>>();<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> ServerName serverA = randomServer(3).getServerName();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> ServerName serverB = randomServer(3).getServerName();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> ServerName serverC = randomServer(3).getServerName();<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> List<RegionInfo> regionsOnServerA = randomRegions(3);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> List<RegionInfo> regionsOnServerB = randomRegions(3);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> List<RegionInfo> regionsOnServerC = randomRegions(3);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> clusterState.put(serverA, regionsOnServerA);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> clusterState.put(serverB, regionsOnServerB);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> clusterState.put(serverC, regionsOnServerC);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // mock ClusterMetrics<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> Map<ServerName, ServerMetrics> serverMetricsMap = new TreeMap<>();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> serverMetricsMap.put(serverA, mockServerMetricsWithCpRequests(serverA, regionsOnServerA, 0));<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> serverMetricsMap.put(serverB, mockServerMetricsWithCpRequests(serverB, regionsOnServerB, 0));<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> serverMetricsMap.put(serverC, mockServerMetricsWithCpRequests(serverC, regionsOnServerC, 0));<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> ClusterMetrics clusterStatus = mock(ClusterMetrics.class);<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> loadBalancer.setClusterMetrics(clusterStatus);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> // CPRequestCostFunction are Rate based, So doing setClusterMetrics again<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // this time, regions on serverA with more cpRequestCount load<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // serverA : 1000,1000,1000<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> // serverB : 0,0,0<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> // serverC : 0,0,0<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // so should move two regions from serverA to serverB & serverC<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> serverMetricsMap = new TreeMap<>();<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> serverMetricsMap.put(serverA, mockServerMetricsWithCpRequests(serverA,<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> regionsOnServerA, 1000));<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> serverMetricsMap.put(serverB, mockServerMetricsWithCpRequests(serverB, regionsOnServerB, 0));<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> serverMetricsMap.put(serverC, mockServerMetricsWithCpRequests(serverC, regionsOnServerC, 0));<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> clusterStatus = mock(ClusterMetrics.class);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> loadBalancer.setClusterMetrics(clusterStatus);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span><a name="line.181"></a> |
| <span class="sourceLineNo">182</span> List<RegionPlan> plans = loadBalancer.balanceCluster(clusterState);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> Set<RegionInfo> regionsMoveFromServerA = new HashSet<>();<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> Set<ServerName> targetServers = new HashSet<>();<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> for(RegionPlan plan : plans) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> if(plan.getSource().equals(serverA)) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> regionsMoveFromServerA.add(plan.getRegionInfo());<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> targetServers.add(plan.getDestination());<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> // should move 2 regions from serverA, one moves to serverB, the other moves to serverC<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> assertEquals(2, regionsMoveFromServerA.size());<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> assertEquals(2, targetServers.size());<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> assertTrue(regionsOnServerA.containsAll(regionsMoveFromServerA));<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> // reset config<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> conf.setFloat("hbase.master.balancer.stochastic.cpRequestCost", 5f);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> loadBalancer.setConf(conf);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span><a name="line.199"></a> |
| <span class="sourceLineNo">200</span> @Test<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> public void testKeepRegionLoad() throws Exception {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> ServerName sn = ServerName.valueOf("test:8080", 100);<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> int numClusterStatusToAdd = 20000;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> for (int i = 0; i < numClusterStatusToAdd; i++) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> ServerMetrics sl = mock(ServerMetrics.class);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> RegionMetrics rl = mock(RegionMetrics.class);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> when(rl.getReadRequestCount()).thenReturn(0L);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> when(rl.getCpRequestCount()).thenReturn(0L);<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> when(rl.getWriteRequestCount()).thenReturn(0L);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> when(rl.getMemStoreSize()).thenReturn(Size.ZERO);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> when(rl.getStoreFileSize()).thenReturn(new Size(i, Size.Unit.MEGABYTE));<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> Map<byte[], RegionMetrics> regionLoadMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> regionLoadMap.put(Bytes.toBytes(REGION_KEY), rl);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> when(sl.getRegionMetrics()).thenReturn(regionLoadMap);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span><a name="line.218"></a> |
| <span class="sourceLineNo">219</span> ClusterMetrics clusterStatus = mock(ClusterMetrics.class);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> Map<ServerName, ServerMetrics> serverMetricsMap = new TreeMap<>();<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> serverMetricsMap.put(sn, sl);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span>// when(clusterStatus.getLoad(sn)).thenReturn(sl);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span><a name="line.224"></a> |
| <span class="sourceLineNo">225</span> loadBalancer.setClusterMetrics(clusterStatus);<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> String regionNameAsString = RegionInfo.getRegionNameAsString(Bytes.toBytes(REGION_KEY));<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> assertTrue(loadBalancer.loads.get(regionNameAsString) != null);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> assertTrue(loadBalancer.loads.get(regionNameAsString).size() == 15);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span><a name="line.231"></a> |
| <span class="sourceLineNo">232</span> Queue<BalancerRegionLoad> loads = loadBalancer.loads.get(regionNameAsString);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> int i = 0;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> while(loads.size() > 0) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> BalancerRegionLoad rl = loads.remove();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> assertEquals(i + (numClusterStatusToAdd - 15), rl.getStorefileSizeMB());<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> i ++;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span><a name="line.240"></a> |
| <span class="sourceLineNo">241</span> @Test<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> public void testNeedBalance() {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> float minCost = conf.getFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 0.05f);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 1.0f);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> loadBalancer.setConf(conf);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> List<RegionPlan> plans = loadBalancer.balanceCluster(servers);<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> assertNull(plans);<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> // reset config<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", minCost);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> loadBalancer.setConf(conf);<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> @Test<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> public void testLocalityCost() throws Exception {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> Configuration conf = HBaseConfiguration.create();<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> MockNoopMasterServices master = new MockNoopMasterServices();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> StochasticLoadBalancer.CostFunction<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> costFunction = new ServerLocalityCostFunction(conf, master);<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> for (int test = 0; test < clusterRegionLocationMocks.length; test++) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> int[][] clusterRegionLocations = clusterRegionLocationMocks[test];<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> MockCluster cluster = new MockCluster(clusterRegionLocations);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> costFunction.init(cluster);<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> double cost = costFunction.cost();<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> double expected = 1 - expectedLocalities[test];<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> assertEquals(expected, cost, 0.001);<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> @Test<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> public void testMoveCost() throws Exception {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> Configuration conf = HBaseConfiguration.create();<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> StochasticLoadBalancer.CostFunction<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> costFunction = new StochasticLoadBalancer.MoveCostFunction(conf);<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> costFunction.init(cluster);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> double cost = costFunction.cost();<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> assertEquals(0.0f, cost, 0.001);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span><a name="line.283"></a> |
| <span class="sourceLineNo">284</span> // cluster region number is smaller than maxMoves=600<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> cluster.setNumRegions(200);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> cluster.setNumMovedRegions(10);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> cost = costFunction.cost();<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> assertEquals(0.05f, cost, 0.001);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> cluster.setNumMovedRegions(100);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> cost = costFunction.cost();<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> assertEquals(0.5f, cost, 0.001);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> cluster.setNumMovedRegions(200);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> cost = costFunction.cost();<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> assertEquals(1.0f, cost, 0.001);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span><a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // cluster region number is bigger than maxMoves=2500<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> cluster.setNumRegions(10000);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> cluster.setNumMovedRegions(250);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> cost = costFunction.cost();<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> assertEquals(0.1f, cost, 0.001);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> cluster.setNumMovedRegions(1250);<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> cost = costFunction.cost();<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> assertEquals(0.5f, cost, 0.001);<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> cluster.setNumMovedRegions(2500);<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> cost = costFunction.cost();<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> assertEquals(1.0f, cost, 0.01);<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span><a name="line.310"></a> |
| <span class="sourceLineNo">311</span> @Test<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> public void testSkewCost() {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> Configuration conf = HBaseConfiguration.create();<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> StochasticLoadBalancer.CostFunction<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> costFunction = new StochasticLoadBalancer.RegionCountSkewCostFunction(conf);<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> costFunction.init(mockCluster(mockCluster));<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> double cost = costFunction.cost();<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> assertTrue(cost >= 0);<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> assertTrue(cost <= 1.01);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> }<a name="line.321"></a> |
| <span class="sourceLineNo">322</span><a name="line.322"></a> |
| <span class="sourceLineNo">323</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> assertEquals(0,costFunction.cost(), 0.01);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 1, 1}));<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> costFunction.init(mockCluster(new int[]{0, 0, 1, 1, 1}));<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> costFunction.init(mockCluster(new int[]{0, 1, 1, 1, 1}));<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> costFunction.init(mockCluster(new int[]{1, 1, 1, 1, 1}));<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> costFunction.init(mockCluster(new int[]{10000, 0, 0, 0, 0}));<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> assertEquals(1, costFunction.cost(), 0.01);<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> @Test<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> public void testCostAfterUndoAction() {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> final int runs = 10;<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> loadBalancer.setConf(conf);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> loadBalancer.initCosts(cluster);<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> for (int i = 0; i != runs; ++i) {<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> final double expectedCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> Cluster.Action action = loadBalancer.nextAction(cluster);<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> cluster.doAction(action);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> loadBalancer.updateCostsWithAction(cluster, action);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> Cluster.Action undoAction = action.undoAction();<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> cluster.doAction(undoAction);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> loadBalancer.updateCostsWithAction(cluster, undoAction);<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> final double actualCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> assertEquals(expectedCost, actualCost, 0);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> }<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> }<a name="line.356"></a> |
| <span class="sourceLineNo">357</span><a name="line.357"></a> |
| <span class="sourceLineNo">358</span> @Test<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> public void testTableSkewCost() {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> Configuration conf = HBaseConfiguration.create();<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> StochasticLoadBalancer.CostFunction<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> costFunction = new StochasticLoadBalancer.TableSkewCostFunction(conf);<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> costFunction.init(cluster);<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> double cost = costFunction.cost();<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> assertTrue(cost >= 0);<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> assertTrue(cost <= 1.01);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> }<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> @Test<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> public void testRegionLoadCost() {<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> List<BalancerRegionLoad> regionLoads = new ArrayList<>();<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> for (int i = 1; i < 5; i++) {<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> BalancerRegionLoad regionLoad = mock(BalancerRegionLoad.class);<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> when(regionLoad.getReadRequestsCount()).thenReturn(new Long(i));<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> when(regionLoad.getCpRequestsCount()).thenReturn(new Long(i));<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> when(regionLoad.getStorefileSizeMB()).thenReturn(i);<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> regionLoads.add(regionLoad);<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> }<a name="line.381"></a> |
| <span class="sourceLineNo">382</span><a name="line.382"></a> |
| <span class="sourceLineNo">383</span> Configuration conf = HBaseConfiguration.create();<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> StochasticLoadBalancer.ReadRequestCostFunction readCostFunction =<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> new StochasticLoadBalancer.ReadRequestCostFunction(conf);<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> double rateResult = readCostFunction.getRegionLoadCost(regionLoads);<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> // read requests are treated as a rate so the average rate here is simply 1<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> assertEquals(1, rateResult, 0.01);<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> StochasticLoadBalancer.CPRequestCostFunction cpCostFunction =<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> new StochasticLoadBalancer.CPRequestCostFunction(conf);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> rateResult = cpCostFunction.getRegionLoadCost(regionLoads);<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> // coprocessor requests are treated as a rate so the average rate here is simply 1<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> assertEquals(1, rateResult, 0.01);<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> StochasticLoadBalancer.StoreFileCostFunction storeFileCostFunction =<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> new StochasticLoadBalancer.StoreFileCostFunction(conf);<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> double result = storeFileCostFunction.getRegionLoadCost(regionLoads);<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> // storefile size cost is simply an average of it's value over time<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> assertEquals(2.5, result, 0.01);<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> }<a name="line.401"></a> |
| <span class="sourceLineNo">402</span><a name="line.402"></a> |
| <span class="sourceLineNo">403</span> @Test<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> public void testCostFromArray() {<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> Configuration conf = HBaseConfiguration.create();<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> StochasticLoadBalancer.CostFromRegionLoadFunction<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> costFunction = new StochasticLoadBalancer.MemStoreSizeCostFunction(conf);<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.408"></a> |
| <span class="sourceLineNo">409</span><a name="line.409"></a> |
| <span class="sourceLineNo">410</span> double[] statOne = new double[100];<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> for (int i =0; i < 100; i++) {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> statOne[i] = 10;<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> assertEquals(0, costFunction.costFromArray(statOne), 0.01);<a name="line.414"></a> |
| <span class="sourceLineNo">415</span><a name="line.415"></a> |
| <span class="sourceLineNo">416</span> double[] statTwo= new double[101];<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> for (int i =0; i < 100; i++) {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> statTwo[i] = 0;<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> }<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> statTwo[100] = 100;<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> assertEquals(1, costFunction.costFromArray(statTwo), 0.01);<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> double[] statThree = new double[200];<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> for (int i =0; i < 100; i++) {<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> statThree[i] = (0);<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> statThree[i+100] = 100;<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> }<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> assertEquals(0.5, costFunction.costFromArray(statThree), 0.01);<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> }<a name="line.429"></a> |
| <span class="sourceLineNo">430</span><a name="line.430"></a> |
| <span class="sourceLineNo">431</span> @Test<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> public void testLosingRs() throws Exception {<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> int numNodes = 3;<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> int numRegions = 20;<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> int numRegionsPerServer = 3; //all servers except one<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> int replication = 1;<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> int numTables = 2;<a name="line.437"></a> |
| <span class="sourceLineNo">438</span><a name="line.438"></a> |
| <span class="sourceLineNo">439</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.441"></a> |
| <span class="sourceLineNo">442</span><a name="line.442"></a> |
| <span class="sourceLineNo">443</span><a name="line.443"></a> |
| <span class="sourceLineNo">444</span> List<RegionPlan> plans = loadBalancer.balanceCluster(serverMap);<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> assertNotNull(plans);<a name="line.445"></a> |
| <span class="sourceLineNo">446</span><a name="line.446"></a> |
| <span class="sourceLineNo">447</span> // Apply the plan to the mock cluster.<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, serverMap);<a name="line.448"></a> |
| <span class="sourceLineNo">449</span><a name="line.449"></a> |
| <span class="sourceLineNo">450</span> assertClusterAsBalanced(balancedCluster);<a name="line.450"></a> |
| <span class="sourceLineNo">451</span><a name="line.451"></a> |
| <span class="sourceLineNo">452</span> ServerName sn = serverMap.keySet().toArray(new ServerName[serverMap.size()])[0];<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> ServerName deadSn = ServerName.valueOf(sn.getHostname(), sn.getPort(), sn.getStartcode() - 100);<a name="line.454"></a> |
| <span class="sourceLineNo">455</span><a name="line.455"></a> |
| <span class="sourceLineNo">456</span> serverMap.put(deadSn, new ArrayList<>(0));<a name="line.456"></a> |
| <span class="sourceLineNo">457</span><a name="line.457"></a> |
| <span class="sourceLineNo">458</span> plans = loadBalancer.balanceCluster(serverMap);<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> assertNull(plans);<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> }<a name="line.460"></a> |
| <span class="sourceLineNo">461</span><a name="line.461"></a> |
| <span class="sourceLineNo">462</span> @Test<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> public void testAdditionalCostFunction() {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> conf.set(StochasticLoadBalancer.COST_FUNCTIONS_COST_FUNCTIONS_KEY,<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> DummyCostFunction.class.getName());<a name="line.465"></a> |
| <span class="sourceLineNo">466</span><a name="line.466"></a> |
| <span class="sourceLineNo">467</span> loadBalancer.setConf(conf);<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> assertTrue(Arrays.<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> asList(loadBalancer.getCostFunctionNames()).<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> contains(DummyCostFunction.class.getSimpleName()));<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> }<a name="line.471"></a> |
| <span class="sourceLineNo">472</span><a name="line.472"></a> |
| <span class="sourceLineNo">473</span> // This mock allows us to test the LocalityCostFunction<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> private class MockCluster extends BaseLoadBalancer.Cluster {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span><a name="line.475"></a> |
| <span class="sourceLineNo">476</span> private int[][] localities = null; // [region][server] = percent of blocks<a name="line.476"></a> |
| <span class="sourceLineNo">477</span><a name="line.477"></a> |
| <span class="sourceLineNo">478</span> public MockCluster(int[][] regions) {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span><a name="line.479"></a> |
| <span class="sourceLineNo">480</span> // regions[0] is an array where index = serverIndex an value = number of regions<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> super(mockClusterServers(regions[0], 1), null, null, null);<a name="line.481"></a> |
| <span class="sourceLineNo">482</span><a name="line.482"></a> |
| <span class="sourceLineNo">483</span> localities = new int[regions.length - 1][];<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> for (int i = 1; i < regions.length; i++) {<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> int regionIndex = i - 1;<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> localities[regionIndex] = new int[regions[i].length - 1];<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> regionIndexToServerIndex[regionIndex] = regions[i][0];<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> for (int j = 1; j < regions[i].length; j++) {<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> int serverIndex = j - 1;<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> localities[regionIndex][serverIndex] = regions[i][j] > 100 ? regions[i][j] % 100 : regions[i][j];<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> }<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> }<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> }<a name="line.493"></a> |
| <span class="sourceLineNo">494</span><a name="line.494"></a> |
| <span class="sourceLineNo">495</span> @Override<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> float getLocalityOfRegion(int region, int server) {<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> // convert the locality percentage to a fraction<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> return localities[region][server] / 100.0f;<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> }<a name="line.499"></a> |
| <span class="sourceLineNo">500</span><a name="line.500"></a> |
| <span class="sourceLineNo">501</span> @Override<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> public int getRegionSizeMB(int region) {<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> return 1;<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> }<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> }<a name="line.505"></a> |
| <span class="sourceLineNo">506</span>}<a name="line.506"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
