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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master.balancer;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.ArrayDeque;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.ArrayList;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.HashMap;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.HashSet;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.LinkedHashMap;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.List;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.Map;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.NavigableSet;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.Queue;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.Random;</span> |
| <span class="source-line-no">032</span><span id="line-32">import java.util.Set;</span> |
| <span class="source-line-no">033</span><span id="line-33">import java.util.TreeMap;</span> |
| <span class="source-line-no">034</span><span id="line-34">import java.util.TreeSet;</span> |
| <span class="source-line-no">035</span><span id="line-35">import java.util.concurrent.ThreadLocalRandom;</span> |
| <span class="source-line-no">036</span><span id="line-36">import java.util.stream.Collectors;</span> |
| <span class="source-line-no">037</span><span id="line-37">import java.util.stream.Stream;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.client.RegionInfoBuilder;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.client.RegionReplicaUtil;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.master.RackManager;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.master.RegionPlan;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.net.DNSToSwitchMapping;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.junit.Assert;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.slf4j.Logger;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52">/**</span> |
| <span class="source-line-no">053</span><span id="line-53"> * Class used to be the base of unit tests on load balancers. It gives helper methods to create maps</span> |
| <span class="source-line-no">054</span><span id="line-54"> * of {@link ServerName} to lists of {@link RegionInfo} and to check list of region plans.</span> |
| <span class="source-line-no">055</span><span id="line-55"> */</span> |
| <span class="source-line-no">056</span><span id="line-56">public class BalancerTestBase {</span> |
| <span class="source-line-no">057</span><span id="line-57"> private static final Logger LOG = LoggerFactory.getLogger(BalancerTestBase.class);</span> |
| <span class="source-line-no">058</span><span id="line-58"> static int regionId = 0;</span> |
| <span class="source-line-no">059</span><span id="line-59"> protected static Configuration conf;</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> protected int[] largeCluster = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">062</span><span id="line-62"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">063</span><span id="line-63"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">064</span><span id="line-64"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">065</span><span id="line-65"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">066</span><span id="line-66"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">067</span><span id="line-67"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">068</span><span id="line-68"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">069</span><span id="line-69"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">070</span><span id="line-70"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">071</span><span id="line-71"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">072</span><span id="line-72"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</span> |
| <span class="source-line-no">073</span><span id="line-73"> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56 };</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> // int[testnum][servernumber] -> numregions</span> |
| <span class="source-line-no">076</span><span id="line-76"> protected int[][] clusterStateMocks = new int[][] {</span> |
| <span class="source-line-no">077</span><span id="line-77"> // 1 node</span> |
| <span class="source-line-no">078</span><span id="line-78"> new int[] { 0 }, new int[] { 1 }, new int[] { 10 },</span> |
| <span class="source-line-no">079</span><span id="line-79"> // 2 node</span> |
| <span class="source-line-no">080</span><span id="line-80"> new int[] { 0, 0 }, new int[] { 2, 0 }, new int[] { 2, 1 }, new int[] { 2, 2 },</span> |
| <span class="source-line-no">081</span><span id="line-81"> new int[] { 2, 3 }, new int[] { 2, 4 }, new int[] { 1, 1 }, new int[] { 0, 1 },</span> |
| <span class="source-line-no">082</span><span id="line-82"> new int[] { 10, 1 }, new int[] { 514, 1432 }, new int[] { 48, 53 },</span> |
| <span class="source-line-no">083</span><span id="line-83"> // 3 node</span> |
| <span class="source-line-no">084</span><span id="line-84"> new int[] { 0, 1, 2 }, new int[] { 1, 2, 3 }, new int[] { 0, 2, 2 }, new int[] { 0, 3, 0 },</span> |
| <span class="source-line-no">085</span><span id="line-85"> new int[] { 0, 4, 0 }, new int[] { 20, 20, 0 },</span> |
| <span class="source-line-no">086</span><span id="line-86"> // 4 node</span> |
| <span class="source-line-no">087</span><span id="line-87"> new int[] { 0, 1, 2, 3 }, new int[] { 4, 0, 0, 0 }, new int[] { 5, 0, 0, 0 },</span> |
| <span class="source-line-no">088</span><span id="line-88"> new int[] { 6, 6, 0, 0 }, new int[] { 6, 2, 0, 0 }, new int[] { 6, 1, 0, 0 },</span> |
| <span class="source-line-no">089</span><span id="line-89"> new int[] { 6, 0, 0, 0 }, new int[] { 4, 4, 4, 7 }, new int[] { 4, 4, 4, 8 },</span> |
| <span class="source-line-no">090</span><span id="line-90"> new int[] { 0, 0, 0, 7 },</span> |
| <span class="source-line-no">091</span><span id="line-91"> // 5 node</span> |
| <span class="source-line-no">092</span><span id="line-92"> new int[] { 1, 1, 1, 1, 4 },</span> |
| <span class="source-line-no">093</span><span id="line-93"> // 6 nodes</span> |
| <span class="source-line-no">094</span><span id="line-94"> new int[] { 1500, 500, 500, 500, 10, 0 }, new int[] { 1500, 500, 500, 500, 500, 0 },</span> |
| <span class="source-line-no">095</span><span id="line-95"> // more nodes</span> |
| <span class="source-line-no">096</span><span id="line-96"> new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },</span> |
| <span class="source-line-no">097</span><span id="line-97"> new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 10 }, new int[] { 6, 6, 5, 6, 6, 6, 6, 6, 6, 1 },</span> |
| <span class="source-line-no">098</span><span id="line-98"> new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 54 }, new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 55 },</span> |
| <span class="source-line-no">099</span><span id="line-99"> new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 56 }, new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 16 },</span> |
| <span class="source-line-no">100</span><span id="line-100"> new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 8 }, new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 9 },</span> |
| <span class="source-line-no">101</span><span id="line-101"> new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 10 }, new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 123 },</span> |
| <span class="source-line-no">102</span><span id="line-102"> new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 155 }, new int[] { 10, 7, 12, 8, 11, 10, 9, 14 },</span> |
| <span class="source-line-no">103</span><span id="line-103"> new int[] { 13, 14, 6, 10, 10, 10, 8, 10 }, new int[] { 130, 14, 60, 10, 100, 10, 80, 10 },</span> |
| <span class="source-line-no">104</span><span id="line-104"> new int[] { 130, 140, 60, 100, 100, 100, 80, 100 }, new int[] { 0, 5, 5, 5, 5 }, largeCluster,</span> |
| <span class="source-line-no">105</span><span id="line-105"></span> |
| <span class="source-line-no">106</span><span id="line-106"> };</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> // int[testnum][servernumber] -> numregions</span> |
| <span class="source-line-no">109</span><span id="line-109"> protected int[][] clusterStateMocksWithNoSlop = new int[][] {</span> |
| <span class="source-line-no">110</span><span id="line-110"> // 1 node</span> |
| <span class="source-line-no">111</span><span id="line-111"> new int[] { 0 }, new int[] { 1 }, new int[] { 10 },</span> |
| <span class="source-line-no">112</span><span id="line-112"> // 2 node</span> |
| <span class="source-line-no">113</span><span id="line-113"> new int[] { 0, 0 }, new int[] { 2, 1 }, new int[] { 2, 2 }, new int[] { 2, 3 },</span> |
| <span class="source-line-no">114</span><span id="line-114"> new int[] { 1, 1 }, new int[] { 80, 120 }, new int[] { 1428, 1432 },</span> |
| <span class="source-line-no">115</span><span id="line-115"> // more nodes</span> |
| <span class="source-line-no">116</span><span id="line-116"> new int[] { 100, 90, 120, 90, 110, 100, 90, 120 }, };</span> |
| <span class="source-line-no">117</span><span id="line-117"></span> |
| <span class="source-line-no">118</span><span id="line-118"> // int[testnum][servernumber] -> numregions</span> |
| <span class="source-line-no">119</span><span id="line-119"> protected int[][] clusterStateMocksWithSlop = new int[][] {</span> |
| <span class="source-line-no">120</span><span id="line-120"> // 2 node</span> |
| <span class="source-line-no">121</span><span id="line-121"> new int[] { 1, 4 }, new int[] { 10, 20 }, new int[] { 80, 123 },</span> |
| <span class="source-line-no">122</span><span id="line-122"> // more nodes</span> |
| <span class="source-line-no">123</span><span id="line-123"> new int[] { 100, 100, 100, 100, 100, 100, 100, 100, 100, 200 },</span> |
| <span class="source-line-no">124</span><span id="line-124"> new int[] { 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,</span> |
| <span class="source-line-no">125</span><span id="line-125"> 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,</span> |
| <span class="source-line-no">126</span><span id="line-126"> 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,</span> |
| <span class="source-line-no">127</span><span id="line-127"> 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 }, };</span> |
| <span class="source-line-no">128</span><span id="line-128"></span> |
| <span class="source-line-no">129</span><span id="line-129"> // This class is introduced because IP to rack resolution can be lengthy.</span> |
| <span class="source-line-no">130</span><span id="line-130"> public static class MockMapping implements DNSToSwitchMapping {</span> |
| <span class="source-line-no">131</span><span id="line-131"> public MockMapping(Configuration conf) {</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> @Override</span> |
| <span class="source-line-no">135</span><span id="line-135"> public List<String> resolve(List<String> names) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> return Stream.generate(() -> "rack").limit(names.size()).collect(Collectors.toList());</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"></span> |
| <span class="source-line-no">139</span><span id="line-139"> @Override</span> |
| <span class="source-line-no">140</span><span id="line-140"> public void reloadCachedMappings() {</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> @Override</span> |
| <span class="source-line-no">144</span><span id="line-144"> public void reloadCachedMappings(List<String> arg0) {</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"></span> |
| <span class="source-line-no">148</span><span id="line-148"> /**</span> |
| <span class="source-line-no">149</span><span id="line-149"> * Invariant is that all servers have between floor(avg) and ceiling(avg) number of regions.</span> |
| <span class="source-line-no">150</span><span id="line-150"> */</span> |
| <span class="source-line-no">151</span><span id="line-151"> public void assertClusterAsBalanced(List<ServerAndLoad> servers) {</span> |
| <span class="source-line-no">152</span><span id="line-152"> int numServers = servers.size();</span> |
| <span class="source-line-no">153</span><span id="line-153"> int numRegions = 0;</span> |
| <span class="source-line-no">154</span><span id="line-154"> int maxRegions = 0;</span> |
| <span class="source-line-no">155</span><span id="line-155"> int minRegions = Integer.MAX_VALUE;</span> |
| <span class="source-line-no">156</span><span id="line-156"> for (ServerAndLoad server : servers) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> int nr = server.getLoad();</span> |
| <span class="source-line-no">158</span><span id="line-158"> if (nr > maxRegions) {</span> |
| <span class="source-line-no">159</span><span id="line-159"> maxRegions = nr;</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"> if (nr < minRegions) {</span> |
| <span class="source-line-no">162</span><span id="line-162"> minRegions = nr;</span> |
| <span class="source-line-no">163</span><span id="line-163"> }</span> |
| <span class="source-line-no">164</span><span id="line-164"> numRegions += nr;</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"> if (maxRegions - minRegions < 2) {</span> |
| <span class="source-line-no">167</span><span id="line-167"> // less than 2 between max and min, can't balance</span> |
| <span class="source-line-no">168</span><span id="line-168"> return;</span> |
| <span class="source-line-no">169</span><span id="line-169"> }</span> |
| <span class="source-line-no">170</span><span id="line-170"> int min = numRegions / numServers;</span> |
| <span class="source-line-no">171</span><span id="line-171"> int max = numRegions % numServers == 0 ? min : min + 1;</span> |
| <span class="source-line-no">172</span><span id="line-172"></span> |
| <span class="source-line-no">173</span><span id="line-173"> for (ServerAndLoad server : servers) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> assertTrue("All servers should have a positive load. " + server, server.getLoad() >= 0);</span> |
| <span class="source-line-no">175</span><span id="line-175"> assertTrue("All servers should have load no more than " + max + ". " + server,</span> |
| <span class="source-line-no">176</span><span id="line-176"> server.getLoad() <= max);</span> |
| <span class="source-line-no">177</span><span id="line-177"> assertTrue("All servers should have load no less than " + min + ". " + server,</span> |
| <span class="source-line-no">178</span><span id="line-178"> server.getLoad() >= min);</span> |
| <span class="source-line-no">179</span><span id="line-179"> }</span> |
| <span class="source-line-no">180</span><span id="line-180"> }</span> |
| <span class="source-line-no">181</span><span id="line-181"></span> |
| <span class="source-line-no">182</span><span id="line-182"> /**</span> |
| <span class="source-line-no">183</span><span id="line-183"> * Invariant is that all servers have between acceptable range number of regions.</span> |
| <span class="source-line-no">184</span><span id="line-184"> */</span> |
| <span class="source-line-no">185</span><span id="line-185"> public boolean assertClusterOverallAsBalanced(List<ServerAndLoad> servers, int tablenum) {</span> |
| <span class="source-line-no">186</span><span id="line-186"> int numServers = servers.size();</span> |
| <span class="source-line-no">187</span><span id="line-187"> int numRegions = 0;</span> |
| <span class="source-line-no">188</span><span id="line-188"> int maxRegions = 0;</span> |
| <span class="source-line-no">189</span><span id="line-189"> int minRegions = Integer.MAX_VALUE;</span> |
| <span class="source-line-no">190</span><span id="line-190"> for (ServerAndLoad server : servers) {</span> |
| <span class="source-line-no">191</span><span id="line-191"> int nr = server.getLoad();</span> |
| <span class="source-line-no">192</span><span id="line-192"> if (nr > maxRegions) {</span> |
| <span class="source-line-no">193</span><span id="line-193"> maxRegions = nr;</span> |
| <span class="source-line-no">194</span><span id="line-194"> }</span> |
| <span class="source-line-no">195</span><span id="line-195"> if (nr < minRegions) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> minRegions = nr;</span> |
| <span class="source-line-no">197</span><span id="line-197"> }</span> |
| <span class="source-line-no">198</span><span id="line-198"> numRegions += nr;</span> |
| <span class="source-line-no">199</span><span id="line-199"> }</span> |
| <span class="source-line-no">200</span><span id="line-200"> if (maxRegions - minRegions < 2) {</span> |
| <span class="source-line-no">201</span><span id="line-201"> // less than 2 between max and min, can't balance</span> |
| <span class="source-line-no">202</span><span id="line-202"> return true;</span> |
| <span class="source-line-no">203</span><span id="line-203"> }</span> |
| <span class="source-line-no">204</span><span id="line-204"> int min = numRegions / numServers;</span> |
| <span class="source-line-no">205</span><span id="line-205"> int max = numRegions % numServers == 0 ? min : min + 1;</span> |
| <span class="source-line-no">206</span><span id="line-206"></span> |
| <span class="source-line-no">207</span><span id="line-207"> for (ServerAndLoad server : servers) {</span> |
| <span class="source-line-no">208</span><span id="line-208"> // The '5' in below is arbitrary.</span> |
| <span class="source-line-no">209</span><span id="line-209"> if (</span> |
| <span class="source-line-no">210</span><span id="line-210"> server.getLoad() < 0 || server.getLoad() > max + (tablenum / 2 + 5)</span> |
| <span class="source-line-no">211</span><span id="line-211"> || server.getLoad() < (min - tablenum / 2 - 5)</span> |
| <span class="source-line-no">212</span><span id="line-212"> ) {</span> |
| <span class="source-line-no">213</span><span id="line-213"> LOG.warn("server={}, load={}, max={}, tablenum={}, min={}", server.getServerName(),</span> |
| <span class="source-line-no">214</span><span id="line-214"> server.getLoad(), max, tablenum, min);</span> |
| <span class="source-line-no">215</span><span id="line-215"> return false;</span> |
| <span class="source-line-no">216</span><span id="line-216"> }</span> |
| <span class="source-line-no">217</span><span id="line-217"> }</span> |
| <span class="source-line-no">218</span><span id="line-218"> return true;</span> |
| <span class="source-line-no">219</span><span id="line-219"> }</span> |
| <span class="source-line-no">220</span><span id="line-220"></span> |
| <span class="source-line-no">221</span><span id="line-221"> /**</span> |
| <span class="source-line-no">222</span><span id="line-222"> * Checks whether region replicas are not hosted on the same host.</span> |
| <span class="source-line-no">223</span><span id="line-223"> */</span> |
| <span class="source-line-no">224</span><span id="line-224"> public void assertRegionReplicaPlacement(Map<ServerName, List<RegionInfo>> serverMap,</span> |
| <span class="source-line-no">225</span><span id="line-225"> RackManager rackManager) {</span> |
| <span class="source-line-no">226</span><span id="line-226"> TreeMap<String, Set<RegionInfo>> regionsPerHost = new TreeMap<>();</span> |
| <span class="source-line-no">227</span><span id="line-227"> TreeMap<String, Set<RegionInfo>> regionsPerRack = new TreeMap<>();</span> |
| <span class="source-line-no">228</span><span id="line-228"></span> |
| <span class="source-line-no">229</span><span id="line-229"> for (Map.Entry<ServerName, List<RegionInfo>> entry : serverMap.entrySet()) {</span> |
| <span class="source-line-no">230</span><span id="line-230"> String hostname = entry.getKey().getHostname();</span> |
| <span class="source-line-no">231</span><span id="line-231"> Set<RegionInfo> infos = regionsPerHost.get(hostname);</span> |
| <span class="source-line-no">232</span><span id="line-232"> if (infos == null) {</span> |
| <span class="source-line-no">233</span><span id="line-233"> infos = new HashSet<>();</span> |
| <span class="source-line-no">234</span><span id="line-234"> regionsPerHost.put(hostname, infos);</span> |
| <span class="source-line-no">235</span><span id="line-235"> }</span> |
| <span class="source-line-no">236</span><span id="line-236"></span> |
| <span class="source-line-no">237</span><span id="line-237"> for (RegionInfo info : entry.getValue()) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> RegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);</span> |
| <span class="source-line-no">239</span><span id="line-239"> if (!infos.add(primaryInfo)) {</span> |
| <span class="source-line-no">240</span><span id="line-240"> Assert.fail("Two or more region replicas are hosted on the same host after balance");</span> |
| <span class="source-line-no">241</span><span id="line-241"> }</span> |
| <span class="source-line-no">242</span><span id="line-242"> }</span> |
| <span class="source-line-no">243</span><span id="line-243"> }</span> |
| <span class="source-line-no">244</span><span id="line-244"></span> |
| <span class="source-line-no">245</span><span id="line-245"> if (rackManager == null) {</span> |
| <span class="source-line-no">246</span><span id="line-246"> return;</span> |
| <span class="source-line-no">247</span><span id="line-247"> }</span> |
| <span class="source-line-no">248</span><span id="line-248"></span> |
| <span class="source-line-no">249</span><span id="line-249"> for (Map.Entry<ServerName, List<RegionInfo>> entry : serverMap.entrySet()) {</span> |
| <span class="source-line-no">250</span><span id="line-250"> String rack = rackManager.getRack(entry.getKey());</span> |
| <span class="source-line-no">251</span><span id="line-251"> Set<RegionInfo> infos = regionsPerRack.get(rack);</span> |
| <span class="source-line-no">252</span><span id="line-252"> if (infos == null) {</span> |
| <span class="source-line-no">253</span><span id="line-253"> infos = new HashSet<>();</span> |
| <span class="source-line-no">254</span><span id="line-254"> regionsPerRack.put(rack, infos);</span> |
| <span class="source-line-no">255</span><span id="line-255"> }</span> |
| <span class="source-line-no">256</span><span id="line-256"></span> |
| <span class="source-line-no">257</span><span id="line-257"> for (RegionInfo info : entry.getValue()) {</span> |
| <span class="source-line-no">258</span><span id="line-258"> RegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);</span> |
| <span class="source-line-no">259</span><span id="line-259"> if (!infos.add(primaryInfo)) {</span> |
| <span class="source-line-no">260</span><span id="line-260"> Assert.fail("Two or more region replicas are hosted on the same rack after balance");</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</span> |
| <span class="source-line-no">262</span><span id="line-262"> }</span> |
| <span class="source-line-no">263</span><span id="line-263"> }</span> |
| <span class="source-line-no">264</span><span id="line-264"> }</span> |
| <span class="source-line-no">265</span><span id="line-265"></span> |
| <span class="source-line-no">266</span><span id="line-266"> protected String printStats(List<ServerAndLoad> servers) {</span> |
| <span class="source-line-no">267</span><span id="line-267"> int numServers = servers.size();</span> |
| <span class="source-line-no">268</span><span id="line-268"> int totalRegions = 0;</span> |
| <span class="source-line-no">269</span><span id="line-269"> for (ServerAndLoad server : servers) {</span> |
| <span class="source-line-no">270</span><span id="line-270"> totalRegions += server.getLoad();</span> |
| <span class="source-line-no">271</span><span id="line-271"> }</span> |
| <span class="source-line-no">272</span><span id="line-272"> float average = (float) totalRegions / numServers;</span> |
| <span class="source-line-no">273</span><span id="line-273"> int max = (int) Math.ceil(average);</span> |
| <span class="source-line-no">274</span><span id="line-274"> int min = (int) Math.floor(average);</span> |
| <span class="source-line-no">275</span><span id="line-275"> return "[srvr=" + numServers + " rgns=" + totalRegions + " avg=" + average + " max=" + max</span> |
| <span class="source-line-no">276</span><span id="line-276"> + " min=" + min + "]";</span> |
| <span class="source-line-no">277</span><span id="line-277"> }</span> |
| <span class="source-line-no">278</span><span id="line-278"></span> |
| <span class="source-line-no">279</span><span id="line-279"> protected List<ServerAndLoad> convertToList(final Map<ServerName, List<RegionInfo>> servers) {</span> |
| <span class="source-line-no">280</span><span id="line-280"> List<ServerAndLoad> list = new ArrayList<>(servers.size());</span> |
| <span class="source-line-no">281</span><span id="line-281"> for (Map.Entry<ServerName, List<RegionInfo>> e : servers.entrySet()) {</span> |
| <span class="source-line-no">282</span><span id="line-282"> list.add(new ServerAndLoad(e.getKey(), e.getValue().size()));</span> |
| <span class="source-line-no">283</span><span id="line-283"> }</span> |
| <span class="source-line-no">284</span><span id="line-284"> return list;</span> |
| <span class="source-line-no">285</span><span id="line-285"> }</span> |
| <span class="source-line-no">286</span><span id="line-286"></span> |
| <span class="source-line-no">287</span><span id="line-287"> protected String printMock(List<ServerAndLoad> balancedCluster) {</span> |
| <span class="source-line-no">288</span><span id="line-288"> NavigableSet<ServerAndLoad> sorted = new TreeSet<>(balancedCluster);</span> |
| <span class="source-line-no">289</span><span id="line-289"> ServerAndLoad[] arr = sorted.toArray(new ServerAndLoad[sorted.size()]);</span> |
| <span class="source-line-no">290</span><span id="line-290"> StringBuilder sb = new StringBuilder(sorted.size() * 4 + 4);</span> |
| <span class="source-line-no">291</span><span id="line-291"> sb.append("{ ");</span> |
| <span class="source-line-no">292</span><span id="line-292"> for (int i = 0; i < arr.length; i++) {</span> |
| <span class="source-line-no">293</span><span id="line-293"> if (i != 0) {</span> |
| <span class="source-line-no">294</span><span id="line-294"> sb.append(" , ");</span> |
| <span class="source-line-no">295</span><span id="line-295"> }</span> |
| <span class="source-line-no">296</span><span id="line-296"> sb.append(arr[i].getServerName().getHostname());</span> |
| <span class="source-line-no">297</span><span id="line-297"> sb.append(":");</span> |
| <span class="source-line-no">298</span><span id="line-298"> sb.append(arr[i].getLoad());</span> |
| <span class="source-line-no">299</span><span id="line-299"> }</span> |
| <span class="source-line-no">300</span><span id="line-300"> sb.append(" }");</span> |
| <span class="source-line-no">301</span><span id="line-301"> return sb.toString();</span> |
| <span class="source-line-no">302</span><span id="line-302"> }</span> |
| <span class="source-line-no">303</span><span id="line-303"></span> |
| <span class="source-line-no">304</span><span id="line-304"> /**</span> |
| <span class="source-line-no">305</span><span id="line-305"> * This assumes the RegionPlan HSI instances are the same ones in the map, so actually no need to</span> |
| <span class="source-line-no">306</span><span id="line-306"> * even pass in the map, but I think it's clearer.</span> |
| <span class="source-line-no">307</span><span id="line-307"> * @return a list of all added {@link ServerAndLoad} values.</span> |
| <span class="source-line-no">308</span><span id="line-308"> */</span> |
| <span class="source-line-no">309</span><span id="line-309"> protected List<ServerAndLoad> reconcile(List<ServerAndLoad> list, List<RegionPlan> plans,</span> |
| <span class="source-line-no">310</span><span id="line-310"> Map<ServerName, List<RegionInfo>> servers) {</span> |
| <span class="source-line-no">311</span><span id="line-311"> List<ServerAndLoad> result = new ArrayList<>(list.size());</span> |
| <span class="source-line-no">312</span><span id="line-312"></span> |
| <span class="source-line-no">313</span><span id="line-313"> Map<ServerName, ServerAndLoad> map = new HashMap<>(list.size());</span> |
| <span class="source-line-no">314</span><span id="line-314"> for (ServerAndLoad sl : list) {</span> |
| <span class="source-line-no">315</span><span id="line-315"> map.put(sl.getServerName(), sl);</span> |
| <span class="source-line-no">316</span><span id="line-316"> }</span> |
| <span class="source-line-no">317</span><span id="line-317"> if (plans != null) {</span> |
| <span class="source-line-no">318</span><span id="line-318"> for (RegionPlan plan : plans) {</span> |
| <span class="source-line-no">319</span><span id="line-319"> ServerName source = plan.getSource();</span> |
| <span class="source-line-no">320</span><span id="line-320"></span> |
| <span class="source-line-no">321</span><span id="line-321"> updateLoad(map, source, -1);</span> |
| <span class="source-line-no">322</span><span id="line-322"> ServerName destination = plan.getDestination();</span> |
| <span class="source-line-no">323</span><span id="line-323"> updateLoad(map, destination, +1);</span> |
| <span class="source-line-no">324</span><span id="line-324"></span> |
| <span class="source-line-no">325</span><span id="line-325"> servers.get(source).remove(plan.getRegionInfo());</span> |
| <span class="source-line-no">326</span><span id="line-326"> servers.get(destination).add(plan.getRegionInfo());</span> |
| <span class="source-line-no">327</span><span id="line-327"> }</span> |
| <span class="source-line-no">328</span><span id="line-328"> }</span> |
| <span class="source-line-no">329</span><span id="line-329"> result.clear();</span> |
| <span class="source-line-no">330</span><span id="line-330"> result.addAll(map.values());</span> |
| <span class="source-line-no">331</span><span id="line-331"> return result;</span> |
| <span class="source-line-no">332</span><span id="line-332"> }</span> |
| <span class="source-line-no">333</span><span id="line-333"></span> |
| <span class="source-line-no">334</span><span id="line-334"> protected void updateLoad(final Map<ServerName, ServerAndLoad> map, final ServerName sn,</span> |
| <span class="source-line-no">335</span><span id="line-335"> final int diff) {</span> |
| <span class="source-line-no">336</span><span id="line-336"> ServerAndLoad sal = map.get(sn);</span> |
| <span class="source-line-no">337</span><span id="line-337"> if (sal == null) sal = new ServerAndLoad(sn, 0);</span> |
| <span class="source-line-no">338</span><span id="line-338"> sal = new ServerAndLoad(sn, sal.getLoad() + diff);</span> |
| <span class="source-line-no">339</span><span id="line-339"> map.put(sn, sal);</span> |
| <span class="source-line-no">340</span><span id="line-340"> }</span> |
| <span class="source-line-no">341</span><span id="line-341"></span> |
| <span class="source-line-no">342</span><span id="line-342"> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[][] mockCluster) {</span> |
| <span class="source-line-no">343</span><span id="line-343"> // dimension1: table, dimension2: regions per server</span> |
| <span class="source-line-no">344</span><span id="line-344"> int numTables = mockCluster.length;</span> |
| <span class="source-line-no">345</span><span id="line-345"> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();</span> |
| <span class="source-line-no">346</span><span id="line-346"> for (int i = 0; i < numTables; i++) {</span> |
| <span class="source-line-no">347</span><span id="line-347"> TableName tableName = TableName.valueOf("table" + i);</span> |
| <span class="source-line-no">348</span><span id="line-348"> for (int j = 0; j < mockCluster[i].length; j++) {</span> |
| <span class="source-line-no">349</span><span id="line-349"> ServerName serverName = ServerName.valueOf("server" + j, 1000, -1);</span> |
| <span class="source-line-no">350</span><span id="line-350"> int numRegions = mockCluster[i][j];</span> |
| <span class="source-line-no">351</span><span id="line-351"> List<RegionInfo> regions = createRegions(numRegions, tableName);</span> |
| <span class="source-line-no">352</span><span id="line-352"> servers.putIfAbsent(serverName, new ArrayList<>());</span> |
| <span class="source-line-no">353</span><span id="line-353"> servers.get(serverName).addAll(regions);</span> |
| <span class="source-line-no">354</span><span id="line-354"> }</span> |
| <span class="source-line-no">355</span><span id="line-355"> }</span> |
| <span class="source-line-no">356</span><span id="line-356"> return servers;</span> |
| <span class="source-line-no">357</span><span id="line-357"> }</span> |
| <span class="source-line-no">358</span><span id="line-358"></span> |
| <span class="source-line-no">359</span><span id="line-359"> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[] mockCluster) {</span> |
| <span class="source-line-no">360</span><span id="line-360"> return mockClusterServers(mockCluster, -1);</span> |
| <span class="source-line-no">361</span><span id="line-361"> }</span> |
| <span class="source-line-no">362</span><span id="line-362"></span> |
| <span class="source-line-no">363</span><span id="line-363"> protected BalancerClusterState mockCluster(int[] mockCluster) {</span> |
| <span class="source-line-no">364</span><span id="line-364"> return new BalancerClusterState(mockClusterServers(mockCluster, -1), null, null, null);</span> |
| <span class="source-line-no">365</span><span id="line-365"> }</span> |
| <span class="source-line-no">366</span><span id="line-366"></span> |
| <span class="source-line-no">367</span><span id="line-367"> protected TreeMap<ServerName, List<RegionInfo>> mockClusterServers(int[] mockCluster,</span> |
| <span class="source-line-no">368</span><span id="line-368"> int numTables) {</span> |
| <span class="source-line-no">369</span><span id="line-369"> int numServers = mockCluster.length;</span> |
| <span class="source-line-no">370</span><span id="line-370"> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();</span> |
| <span class="source-line-no">371</span><span id="line-371"> for (int i = 0; i < numServers; i++) {</span> |
| <span class="source-line-no">372</span><span id="line-372"> int numRegions = mockCluster[i];</span> |
| <span class="source-line-no">373</span><span id="line-373"> ServerAndLoad sal = randomServer(0);</span> |
| <span class="source-line-no">374</span><span id="line-374"> List<RegionInfo> regions = randomRegions(numRegions, numTables);</span> |
| <span class="source-line-no">375</span><span id="line-375"> servers.put(sal.getServerName(), regions);</span> |
| <span class="source-line-no">376</span><span id="line-376"> }</span> |
| <span class="source-line-no">377</span><span id="line-377"> return servers;</span> |
| <span class="source-line-no">378</span><span id="line-378"> }</span> |
| <span class="source-line-no">379</span><span id="line-379"></span> |
| <span class="source-line-no">380</span><span id="line-380"> protected Map<ServerName, List<RegionInfo>> mockClusterServersUnsorted(int[] mockCluster,</span> |
| <span class="source-line-no">381</span><span id="line-381"> int numTables) {</span> |
| <span class="source-line-no">382</span><span id="line-382"> int numServers = mockCluster.length;</span> |
| <span class="source-line-no">383</span><span id="line-383"> Map<ServerName, List<RegionInfo>> servers = new LinkedHashMap<>();</span> |
| <span class="source-line-no">384</span><span id="line-384"> for (int i = 0; i < numServers; i++) {</span> |
| <span class="source-line-no">385</span><span id="line-385"> int numRegions = mockCluster[i];</span> |
| <span class="source-line-no">386</span><span id="line-386"> ServerAndLoad sal = randomServer(0);</span> |
| <span class="source-line-no">387</span><span id="line-387"> List<RegionInfo> regions = randomRegions(numRegions, numTables);</span> |
| <span class="source-line-no">388</span><span id="line-388"> servers.put(sal.getServerName(), regions);</span> |
| <span class="source-line-no">389</span><span id="line-389"> }</span> |
| <span class="source-line-no">390</span><span id="line-390"> return servers;</span> |
| <span class="source-line-no">391</span><span id="line-391"> }</span> |
| <span class="source-line-no">392</span><span id="line-392"></span> |
| <span class="source-line-no">393</span><span id="line-393"> protected TreeMap<ServerName, List<RegionInfo>> mockUniformClusterServers(int[] mockCluster) {</span> |
| <span class="source-line-no">394</span><span id="line-394"> int numServers = mockCluster.length;</span> |
| <span class="source-line-no">395</span><span id="line-395"> TreeMap<ServerName, List<RegionInfo>> servers = new TreeMap<>();</span> |
| <span class="source-line-no">396</span><span id="line-396"> for (int i = 0; i < numServers; i++) {</span> |
| <span class="source-line-no">397</span><span id="line-397"> int numRegions = mockCluster[i];</span> |
| <span class="source-line-no">398</span><span id="line-398"> ServerAndLoad sal = randomServer(0);</span> |
| <span class="source-line-no">399</span><span id="line-399"> List<RegionInfo> regions = uniformRegions(numRegions);</span> |
| <span class="source-line-no">400</span><span id="line-400"> servers.put(sal.getServerName(), regions);</span> |
| <span class="source-line-no">401</span><span id="line-401"> }</span> |
| <span class="source-line-no">402</span><span id="line-402"> return servers;</span> |
| <span class="source-line-no">403</span><span id="line-403"> }</span> |
| <span class="source-line-no">404</span><span id="line-404"></span> |
| <span class="source-line-no">405</span><span id="line-405"> protected HashMap<TableName, TreeMap<ServerName, List<RegionInfo>>></span> |
| <span class="source-line-no">406</span><span id="line-406"> mockClusterServersWithTables(Map<ServerName, List<RegionInfo>> clusterServers) {</span> |
| <span class="source-line-no">407</span><span id="line-407"> HashMap<TableName, TreeMap<ServerName, List<RegionInfo>>> result = new HashMap<>();</span> |
| <span class="source-line-no">408</span><span id="line-408"> for (Map.Entry<ServerName, List<RegionInfo>> entry : clusterServers.entrySet()) {</span> |
| <span class="source-line-no">409</span><span id="line-409"> ServerName sal = entry.getKey();</span> |
| <span class="source-line-no">410</span><span id="line-410"> List<RegionInfo> regions = entry.getValue();</span> |
| <span class="source-line-no">411</span><span id="line-411"> for (RegionInfo hri : regions) {</span> |
| <span class="source-line-no">412</span><span id="line-412"> TreeMap<ServerName, List<RegionInfo>> servers = result.get(hri.getTable());</span> |
| <span class="source-line-no">413</span><span id="line-413"> if (servers == null) {</span> |
| <span class="source-line-no">414</span><span id="line-414"> servers = new TreeMap<>();</span> |
| <span class="source-line-no">415</span><span id="line-415"> result.put(hri.getTable(), servers);</span> |
| <span class="source-line-no">416</span><span id="line-416"> }</span> |
| <span class="source-line-no">417</span><span id="line-417"> List<RegionInfo> hrilist = servers.get(sal);</span> |
| <span class="source-line-no">418</span><span id="line-418"> if (hrilist == null) {</span> |
| <span class="source-line-no">419</span><span id="line-419"> hrilist = new ArrayList<>();</span> |
| <span class="source-line-no">420</span><span id="line-420"> servers.put(sal, hrilist);</span> |
| <span class="source-line-no">421</span><span id="line-421"> }</span> |
| <span class="source-line-no">422</span><span id="line-422"> hrilist.add(hri);</span> |
| <span class="source-line-no">423</span><span id="line-423"> }</span> |
| <span class="source-line-no">424</span><span id="line-424"> }</span> |
| <span class="source-line-no">425</span><span id="line-425"> for (Map.Entry<TableName, TreeMap<ServerName, List<RegionInfo>>> entry : result.entrySet()) {</span> |
| <span class="source-line-no">426</span><span id="line-426"> for (ServerName srn : clusterServers.keySet()) {</span> |
| <span class="source-line-no">427</span><span id="line-427"> if (!entry.getValue().containsKey(srn)) entry.getValue().put(srn, new ArrayList<>());</span> |
| <span class="source-line-no">428</span><span id="line-428"> }</span> |
| <span class="source-line-no">429</span><span id="line-429"> }</span> |
| <span class="source-line-no">430</span><span id="line-430"> return result;</span> |
| <span class="source-line-no">431</span><span id="line-431"> }</span> |
| <span class="source-line-no">432</span><span id="line-432"></span> |
| <span class="source-line-no">433</span><span id="line-433"> private Queue<RegionInfo> regionQueue = new ArrayDeque<>();</span> |
| <span class="source-line-no">434</span><span id="line-434"></span> |
| <span class="source-line-no">435</span><span id="line-435"> protected List<RegionInfo> randomRegions(int numRegions) {</span> |
| <span class="source-line-no">436</span><span id="line-436"> return randomRegions(numRegions, -1);</span> |
| <span class="source-line-no">437</span><span id="line-437"> }</span> |
| <span class="source-line-no">438</span><span id="line-438"></span> |
| <span class="source-line-no">439</span><span id="line-439"> protected List<RegionInfo> createRegions(int numRegions, TableName tableName) {</span> |
| <span class="source-line-no">440</span><span id="line-440"> List<RegionInfo> regions = new ArrayList<>(numRegions);</span> |
| <span class="source-line-no">441</span><span id="line-441"> byte[] start = new byte[16];</span> |
| <span class="source-line-no">442</span><span id="line-442"> Bytes.random(start);</span> |
| <span class="source-line-no">443</span><span id="line-443"> byte[] end = new byte[16];</span> |
| <span class="source-line-no">444</span><span id="line-444"> Bytes.random(end);</span> |
| <span class="source-line-no">445</span><span id="line-445"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">446</span><span id="line-446"> Bytes.putInt(start, 0, numRegions << 1);</span> |
| <span class="source-line-no">447</span><span id="line-447"> Bytes.putInt(end, 0, (numRegions << 1) + 1);</span> |
| <span class="source-line-no">448</span><span id="line-448"> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName).setStartKey(start).setEndKey(end)</span> |
| <span class="source-line-no">449</span><span id="line-449"> .setSplit(false).build();</span> |
| <span class="source-line-no">450</span><span id="line-450"> regions.add(hri);</span> |
| <span class="source-line-no">451</span><span id="line-451"> }</span> |
| <span class="source-line-no">452</span><span id="line-452"> return regions;</span> |
| <span class="source-line-no">453</span><span id="line-453"> }</span> |
| <span class="source-line-no">454</span><span id="line-454"></span> |
| <span class="source-line-no">455</span><span id="line-455"> protected List<RegionInfo> randomRegions(int numRegions, int numTables) {</span> |
| <span class="source-line-no">456</span><span id="line-456"> List<RegionInfo> regions = new ArrayList<>(numRegions);</span> |
| <span class="source-line-no">457</span><span id="line-457"> byte[] start = new byte[16];</span> |
| <span class="source-line-no">458</span><span id="line-458"> Bytes.random(start);</span> |
| <span class="source-line-no">459</span><span id="line-459"> byte[] end = new byte[16];</span> |
| <span class="source-line-no">460</span><span id="line-460"> Bytes.random(end);</span> |
| <span class="source-line-no">461</span><span id="line-461"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">462</span><span id="line-462"> if (!regionQueue.isEmpty()) {</span> |
| <span class="source-line-no">463</span><span id="line-463"> regions.add(regionQueue.poll());</span> |
| <span class="source-line-no">464</span><span id="line-464"> continue;</span> |
| <span class="source-line-no">465</span><span id="line-465"> }</span> |
| <span class="source-line-no">466</span><span id="line-466"> Bytes.putInt(start, 0, numRegions << 1);</span> |
| <span class="source-line-no">467</span><span id="line-467"> Bytes.putInt(end, 0, (numRegions << 1) + 1);</span> |
| <span class="source-line-no">468</span><span id="line-468"> TableName tableName = TableName</span> |
| <span class="source-line-no">469</span><span id="line-469"> .valueOf("table" + (numTables > 0 ? ThreadLocalRandom.current().nextInt(numTables) : i));</span> |
| <span class="source-line-no">470</span><span id="line-470"> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName).setStartKey(start).setEndKey(end)</span> |
| <span class="source-line-no">471</span><span id="line-471"> .setSplit(false).setRegionId(regionId++).build();</span> |
| <span class="source-line-no">472</span><span id="line-472"> regions.add(hri);</span> |
| <span class="source-line-no">473</span><span id="line-473"> }</span> |
| <span class="source-line-no">474</span><span id="line-474"> return regions;</span> |
| <span class="source-line-no">475</span><span id="line-475"> }</span> |
| <span class="source-line-no">476</span><span id="line-476"></span> |
| <span class="source-line-no">477</span><span id="line-477"> protected List<RegionInfo> uniformRegions(int numRegions) {</span> |
| <span class="source-line-no">478</span><span id="line-478"> List<RegionInfo> regions = new ArrayList<>(numRegions);</span> |
| <span class="source-line-no">479</span><span id="line-479"> byte[] start = new byte[16];</span> |
| <span class="source-line-no">480</span><span id="line-480"> Bytes.random(start);</span> |
| <span class="source-line-no">481</span><span id="line-481"> byte[] end = new byte[16];</span> |
| <span class="source-line-no">482</span><span id="line-482"> Bytes.random(end);</span> |
| <span class="source-line-no">483</span><span id="line-483"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">484</span><span id="line-484"> Bytes.putInt(start, 0, numRegions << 1);</span> |
| <span class="source-line-no">485</span><span id="line-485"> Bytes.putInt(end, 0, (numRegions << 1) + 1);</span> |
| <span class="source-line-no">486</span><span id="line-486"> TableName tableName = TableName.valueOf("table" + i);</span> |
| <span class="source-line-no">487</span><span id="line-487"> RegionInfo hri = RegionInfoBuilder.newBuilder(tableName).setStartKey(start).setEndKey(end)</span> |
| <span class="source-line-no">488</span><span id="line-488"> .setSplit(false).build();</span> |
| <span class="source-line-no">489</span><span id="line-489"> regions.add(hri);</span> |
| <span class="source-line-no">490</span><span id="line-490"> }</span> |
| <span class="source-line-no">491</span><span id="line-491"> return regions;</span> |
| <span class="source-line-no">492</span><span id="line-492"> }</span> |
| <span class="source-line-no">493</span><span id="line-493"></span> |
| <span class="source-line-no">494</span><span id="line-494"> protected void returnRegions(List<RegionInfo> regions) {</span> |
| <span class="source-line-no">495</span><span id="line-495"> regionQueue.addAll(regions);</span> |
| <span class="source-line-no">496</span><span id="line-496"> }</span> |
| <span class="source-line-no">497</span><span id="line-497"></span> |
| <span class="source-line-no">498</span><span id="line-498"> private Queue<ServerName> serverQueue = new ArrayDeque<>();</span> |
| <span class="source-line-no">499</span><span id="line-499"></span> |
| <span class="source-line-no">500</span><span id="line-500"> protected ServerAndLoad randomServer(final int numRegionsPerServer) {</span> |
| <span class="source-line-no">501</span><span id="line-501"> if (!this.serverQueue.isEmpty()) {</span> |
| <span class="source-line-no">502</span><span id="line-502"> ServerName sn = this.serverQueue.poll();</span> |
| <span class="source-line-no">503</span><span id="line-503"> return new ServerAndLoad(sn, numRegionsPerServer);</span> |
| <span class="source-line-no">504</span><span id="line-504"> }</span> |
| <span class="source-line-no">505</span><span id="line-505"> Random rand = ThreadLocalRandom.current();</span> |
| <span class="source-line-no">506</span><span id="line-506"> String host = "srv" + rand.nextInt(Integer.MAX_VALUE);</span> |
| <span class="source-line-no">507</span><span id="line-507"> int port = rand.nextInt(60000);</span> |
| <span class="source-line-no">508</span><span id="line-508"> long startCode = rand.nextLong();</span> |
| <span class="source-line-no">509</span><span id="line-509"> ServerName sn = ServerName.valueOf(host, port, startCode);</span> |
| <span class="source-line-no">510</span><span id="line-510"> return new ServerAndLoad(sn, numRegionsPerServer);</span> |
| <span class="source-line-no">511</span><span id="line-511"> }</span> |
| <span class="source-line-no">512</span><span id="line-512"></span> |
| <span class="source-line-no">513</span><span id="line-513"> protected List<ServerAndLoad> randomServers(int numServers, int numRegionsPerServer) {</span> |
| <span class="source-line-no">514</span><span id="line-514"> List<ServerAndLoad> servers = new ArrayList<>(numServers);</span> |
| <span class="source-line-no">515</span><span id="line-515"> for (int i = 0; i < numServers; i++) {</span> |
| <span class="source-line-no">516</span><span id="line-516"> servers.add(randomServer(numRegionsPerServer));</span> |
| <span class="source-line-no">517</span><span id="line-517"> }</span> |
| <span class="source-line-no">518</span><span id="line-518"> return servers;</span> |
| <span class="source-line-no">519</span><span id="line-519"> }</span> |
| <span class="source-line-no">520</span><span id="line-520"></span> |
| <span class="source-line-no">521</span><span id="line-521"> protected void returnServer(ServerName server) {</span> |
| <span class="source-line-no">522</span><span id="line-522"> serverQueue.add(server);</span> |
| <span class="source-line-no">523</span><span id="line-523"> }</span> |
| <span class="source-line-no">524</span><span id="line-524"></span> |
| <span class="source-line-no">525</span><span id="line-525"> protected void returnServers(List<ServerName> servers) {</span> |
| <span class="source-line-no">526</span><span id="line-526"> this.serverQueue.addAll(servers);</span> |
| <span class="source-line-no">527</span><span id="line-527"> }</span> |
| <span class="source-line-no">528</span><span id="line-528"></span> |
| <span class="source-line-no">529</span><span id="line-529"> protected Map<ServerName, List<RegionInfo>> createServerMap(int numNodes, int numRegions,</span> |
| <span class="source-line-no">530</span><span id="line-530"> int numRegionsPerServer, int replication, int numTables) {</span> |
| <span class="source-line-no">531</span><span id="line-531"> // construct a cluster of numNodes, having a total of numRegions. Each RS will hold</span> |
| <span class="source-line-no">532</span><span id="line-532"> // numRegionsPerServer many regions except for the last one, which will host all the</span> |
| <span class="source-line-no">533</span><span id="line-533"> // remaining regions</span> |
| <span class="source-line-no">534</span><span id="line-534"> int[] cluster = new int[numNodes];</span> |
| <span class="source-line-no">535</span><span id="line-535"> for (int i = 0; i < numNodes; i++) {</span> |
| <span class="source-line-no">536</span><span id="line-536"> cluster[i] = numRegionsPerServer;</span> |
| <span class="source-line-no">537</span><span id="line-537"> }</span> |
| <span class="source-line-no">538</span><span id="line-538"> cluster[cluster.length - 1] = numRegions - ((cluster.length - 1) * numRegionsPerServer);</span> |
| <span class="source-line-no">539</span><span id="line-539"> Map<ServerName, List<RegionInfo>> clusterState = mockClusterServers(cluster, numTables);</span> |
| <span class="source-line-no">540</span><span id="line-540"> if (replication > 0) {</span> |
| <span class="source-line-no">541</span><span id="line-541"> // replicate the regions to the same servers</span> |
| <span class="source-line-no">542</span><span id="line-542"> for (List<RegionInfo> regions : clusterState.values()) {</span> |
| <span class="source-line-no">543</span><span id="line-543"> int length = regions.size();</span> |
| <span class="source-line-no">544</span><span id="line-544"> for (int i = 0; i < length; i++) {</span> |
| <span class="source-line-no">545</span><span id="line-545"> for (int r = 1; r < replication; r++) {</span> |
| <span class="source-line-no">546</span><span id="line-546"> regions.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(i), r));</span> |
| <span class="source-line-no">547</span><span id="line-547"> }</span> |
| <span class="source-line-no">548</span><span id="line-548"> }</span> |
| <span class="source-line-no">549</span><span id="line-549"> }</span> |
| <span class="source-line-no">550</span><span id="line-550"> }</span> |
| <span class="source-line-no">551</span><span id="line-551"></span> |
| <span class="source-line-no">552</span><span id="line-552"> return clusterState;</span> |
| <span class="source-line-no">553</span><span id="line-553"> }</span> |
| <span class="source-line-no">554</span><span id="line-554">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
