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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.assertNotEquals;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotNull;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertTrue;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span><a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Arrays;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.EnumSet;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.ClusterMetrics;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.ClusterMetrics.Option;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseTestingUtility;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HConstants;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.MiniHBaseCluster;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.TableName;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.Waiter;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.HMaster;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.assignment.RegionStates;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.testclassification.LargeTests;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.util.JVMClusterUtil;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.junit.After;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.junit.Before;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.junit.BeforeClass;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.junit.ClassRule;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.junit.Rule;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.junit.Test;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.junit.experimental.categories.Category;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>import org.junit.rules.TestName;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span>import org.slf4j.Logger;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span>import org.slf4j.LoggerFactory;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span>import org.apache.hbase.thirdparty.com.google.common.collect.Maps;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span>@Category(LargeTests.class)<a name="line.72"></a> |
| <span class="sourceLineNo">073</span>public class TestFavoredStochasticBalancerPickers extends BalancerTestBase {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> @ClassRule<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> HBaseClassTestRule.forClass(TestFavoredStochasticBalancerPickers.class);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private static final Logger LOG =<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> LoggerFactory.getLogger(TestFavoredStochasticBalancerPickers.class);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private static final int SLAVES = 6;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private static final int REGIONS = SLAVES * 3;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private static Configuration conf;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private Admin admin;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> private MiniHBaseCluster cluster;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> @Rule<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public TestName name = new TestName();<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> @BeforeClass<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> public static void setupBeforeClass() throws Exception {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> conf = TEST_UTIL.getConfiguration();<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> // Enable favored nodes based load balancer<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> conf.setClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS,<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> LoadOnlyFavoredStochasticBalancer.class, LoadBalancer.class);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> conf.setLong("hbase.master.balancer.stochastic.maxRunningTime", 30000);<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> conf.setInt("hbase.master.balancer.stochastic.moveCost", 0);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> conf.setBoolean("hbase.master.balancer.stochastic.execute.maxSteps", true);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> conf.set(BaseLoadBalancer.TABLES_ON_MASTER, "none");<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> @Before<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> public void startCluster() throws Exception {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> TEST_UTIL.startMiniCluster(SLAVES);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> TEST_UTIL.getDFSCluster().waitClusterUp();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> TEST_UTIL.getHBaseCluster().waitForActiveAndReadyMaster(120*1000);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> cluster = TEST_UTIL.getMiniHBaseCluster();<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> admin = TEST_UTIL.getAdmin();<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> admin.balancerSwitch(false, true);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span><a name="line.114"></a> |
| <span class="sourceLineNo">115</span> @After<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> public void stopCluster() throws Exception {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> TEST_UTIL.cleanupTestDir();<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> TEST_UTIL.shutdownMiniCluster();<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> @Test<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public void testPickers() throws Exception {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> ColumnFamilyDescriptor columnFamilyDescriptor =<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> ColumnFamilyDescriptorBuilder.newBuilder(HConstants.CATALOG_FAMILY).build();<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> TableDescriptor desc = TableDescriptorBuilder<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> .newBuilder(tableName)<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> .setColumnFamily(columnFamilyDescriptor)<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> .build();<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> admin.createTable(desc, Bytes.toBytes("aaa"), Bytes.toBytes("zzz"), REGIONS);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> TEST_UTIL.waitUntilAllRegionsAssigned(tableName);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> TEST_UTIL.loadTable(admin.getConnection().getTable(tableName), HConstants.CATALOG_FAMILY);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> admin.flush(tableName);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> HMaster master = cluster.getMaster();<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> FavoredNodesManager fnm = master.getFavoredNodesManager();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> ServerName masterServerName = master.getServerName();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> List<ServerName> excludedServers = Lists.newArrayList(masterServerName);<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> final ServerName mostLoadedServer = getRSWithMaxRegions(tableName, excludedServers);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> assertNotNull(mostLoadedServer);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> int numRegions = getTableRegionsFromServer(tableName, mostLoadedServer).size();<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> excludedServers.add(mostLoadedServer);<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> // Lets find another server with more regions to calculate number of regions to move<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> ServerName source = getRSWithMaxRegions(tableName, excludedServers);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> assertNotNull(source);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> int regionsToMove = getTableRegionsFromServer(tableName, source).size()/2;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> // Since move only works if the target is part of favored nodes of the region, lets get all<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> // regions that are movable to mostLoadedServer<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> List<RegionInfo> hris = getRegionsThatCanBeMoved(tableName, mostLoadedServer);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> RegionStates rst = master.getAssignmentManager().getRegionStates();<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> for (int i = 0; i < regionsToMove; i++) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> final RegionInfo regionInfo = hris.get(i);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> admin.move(regionInfo.getEncodedNameAsBytes(), mostLoadedServer);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> LOG.info("Moving region: " + hris.get(i).getRegionNameAsString() + " to " + mostLoadedServer);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> TEST_UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> @Override<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> public boolean evaluate() throws Exception {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> return ServerName.isSameAddress(<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> rst.getRegionServerOfRegion(regionInfo), mostLoadedServer);<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> });<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> final int finalRegions = numRegions + regionsToMove;<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> TEST_UTIL.waitUntilNoRegionsInTransition(60000);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> TEST_UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> @Override<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> public boolean evaluate() throws Exception {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> int numRegions = getTableRegionsFromServer(tableName, mostLoadedServer).size();<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> return (numRegions == finalRegions);<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> }<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> });<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> TEST_UTIL.getHBaseCluster().startRegionServerAndWait(60000);<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> Map<ServerName, List<RegionInfo>> serverAssignments = Maps.newHashMap();<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> ClusterMetrics status = admin.getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS));<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> for (ServerName sn : status.getLiveServerMetrics().keySet()) {<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> if (!ServerName.isSameAddress(sn, masterServerName)) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> serverAssignments.put(sn, getTableRegionsFromServer(tableName, sn));<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> RegionHDFSBlockLocationFinder regionFinder = new RegionHDFSBlockLocationFinder();<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> regionFinder.setClusterMetrics(admin.getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS)));<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> regionFinder.setConf(conf);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> regionFinder.setClusterInfoProvider(<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> new MasterClusterInfoProvider(TEST_UTIL.getMiniHBaseCluster().getMaster()));<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> Cluster cluster = new Cluster(serverAssignments, null, regionFinder, new RackManager(conf));<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> LoadOnlyFavoredStochasticBalancer balancer = (LoadOnlyFavoredStochasticBalancer) TEST_UTIL<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> .getMiniHBaseCluster().getMaster().getLoadBalancer().getInternalBalancer();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> cluster.sortServersByRegionCount();<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> Integer[] servers = cluster.serverIndicesSortedByRegionCount;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> LOG.info("Servers sorted by region count:" + Arrays.toString(servers));<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> LOG.info("Cluster dump: " + cluster);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> if (!mostLoadedServer.equals(cluster.servers[servers[servers.length -1]])) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> LOG.error("Most loaded server: " + mostLoadedServer + " does not match: "<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> + cluster.servers[servers[servers.length -1]]);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> assertEquals(mostLoadedServer, cluster.servers[servers[servers.length - 1]]);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> FavoredStochasticBalancer.FavoredNodeLoadPicker loadPicker =<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> balancer.new FavoredNodeLoadPicker();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> boolean userRegionPicked = false;<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> for (int i = 0; i < 100; i++) {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> if (userRegionPicked) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> break;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> } else {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> Cluster.Action action = loadPicker.generate(cluster);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> if (action.type == Cluster.Action.Type.MOVE_REGION) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> Cluster.MoveRegionAction moveRegionAction = (Cluster.MoveRegionAction) action;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> RegionInfo region = cluster.regions[moveRegionAction.region];<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> assertNotEquals(-1, moveRegionAction.toServer);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> ServerName destinationServer = cluster.servers[moveRegionAction.toServer];<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> assertEquals(cluster.servers[moveRegionAction.fromServer], mostLoadedServer);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> if (!region.getTable().isSystemTable()) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> List<ServerName> favNodes = fnm.getFavoredNodes(region);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> assertTrue(favNodes.contains(<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> ServerName.valueOf(destinationServer.getAddress(), -1)));<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> userRegionPicked = true;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> assertTrue("load picker did not pick expected regions in 100 iterations.", userRegionPicked);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> /*<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * A region can only be moved to one of its favored node. Hence this method helps us to<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * get that list which makes it easy to write non-flaky tests.<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> */<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> private List<RegionInfo> getRegionsThatCanBeMoved(TableName tableName,<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> ServerName serverName) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> List<RegionInfo> regions = Lists.newArrayList();<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> RegionStates rst = cluster.getMaster().getAssignmentManager().getRegionStates();<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> FavoredNodesManager fnm = cluster.getMaster().getFavoredNodesManager();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> for (RegionInfo regionInfo : fnm.getRegionsOfFavoredNode(serverName)) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (regionInfo.getTable().equals(tableName) &&<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> !ServerName.isSameAddress(rst.getRegionServerOfRegion(regionInfo), serverName)) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> regions.add(regionInfo);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> return regions;<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> }<a name="line.243"></a> |
| <span class="sourceLineNo">244</span><a name="line.244"></a> |
| <span class="sourceLineNo">245</span> private List<RegionInfo> getTableRegionsFromServer(TableName tableName, ServerName source)<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> throws IOException {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> List<RegionInfo> regionInfos = Lists.newArrayList();<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> HRegionServer regionServer = cluster.getRegionServer(source);<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> for (Region region : regionServer.getRegions(tableName)) {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> regionInfos.add(region.getRegionInfo());<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> return regionInfos;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span><a name="line.254"></a> |
| <span class="sourceLineNo">255</span> private ServerName getRSWithMaxRegions(TableName tableName, List<ServerName> excludeNodes)<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> throws IOException {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> int maxRegions = 0;<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> ServerName maxLoadedServer = null;<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> for (JVMClusterUtil.RegionServerThread rst : cluster.getLiveRegionServerThreads()) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> List<HRegion> regions = rst.getRegionServer().getRegions(tableName);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> LOG.debug("Server: " + rst.getRegionServer().getServerName() + " regions: " + regions.size());<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> if (regions.size() > maxRegions) {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (excludeNodes == null ||<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> !doesMatchExcludeNodes(excludeNodes, rst.getRegionServer().getServerName())) {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> maxRegions = regions.size();<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> maxLoadedServer = rst.getRegionServer().getServerName();<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> return maxLoadedServer;<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span><a name="line.274"></a> |
| <span class="sourceLineNo">275</span> private boolean doesMatchExcludeNodes(List<ServerName> excludeNodes, ServerName sn) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> for (ServerName excludeSN : excludeNodes) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> if (ServerName.isSameAddress(sn, excludeSN)) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> return true;<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> return false;<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span>}<a name="line.283"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
