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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;<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.junit.Assert.fail;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.IOException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.net.InetSocketAddress;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.ArrayList;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Arrays;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Collection;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.HashMap;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.List;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Map;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.Random;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.conf.Configuration;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.CatalogFamilyFormat;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.ClientMetaTableAccessor;<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.HBaseTestingUtility;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.HConstants;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.MiniHBaseCluster;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.NamespaceDescriptor;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.ServerName;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.TableName;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.RegionLocator;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.Result;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.favored.FavoredNodeLoadBalancer;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.favored.FavoredNodesPlan;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span>import org.apache.zookeeper.KeeperException;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>import org.junit.AfterClass;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>import org.junit.BeforeClass;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span>import org.junit.ClassRule;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>import org.junit.Ignore;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>import org.junit.Test;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span>import org.junit.experimental.categories.Category;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span>import org.slf4j.Logger;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span>import org.slf4j.LoggerFactory;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span>@Category({MasterTests.class, MediumTests.class})<a name="line.77"></a> |
| <span class="sourceLineNo">078</span>public class TestRegionPlacement {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> @ClassRule<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> HBaseClassTestRule.forClass(TestRegionPlacement.class);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private static final Logger LOG = LoggerFactory.getLogger(TestRegionPlacement.class);<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> private final static int SLAVES = 10;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private static Connection CONNECTION;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> private static Admin admin;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> private static RegionPlacementMaintainer rp;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private static Position[] positions = Position.values();<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> private int lastRegionOnPrimaryRSCount = 0;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> private int REGION_NUM = 10;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private Map<RegionInfo, ServerName[]> favoredNodesAssignmentPlan = new HashMap<>();<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> @BeforeClass<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public static void setupBeforeClass() throws Exception {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // Enable the favored nodes based load balancer<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> conf.setClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS,<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> FavoredNodeLoadBalancer.class, LoadBalancer.class);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> conf.setBoolean("hbase.tests.use.shortcircuit.reads", false);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> TEST_UTIL.startMiniCluster(SLAVES);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> CONNECTION = TEST_UTIL.getConnection();<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> admin = CONNECTION.getAdmin();<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> rp = new RegionPlacementMaintainer(conf);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> @AfterClass<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> public static void tearDownAfterClass() throws Exception {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> TEST_UTIL.shutdownMiniCluster();<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> @Ignore ("Test for unfinished feature") @Test<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public void testRegionPlacement() throws Exception {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> String tableStr = "testRegionAssignment";<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> TableName table = TableName.valueOf(tableStr);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> // Create a table with REGION_NUM regions.<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> createTable(table, REGION_NUM);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> TEST_UTIL.waitTableAvailable(table);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> // Verify all the user regions are assigned to the primary region server<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> // based on the plan<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> verifyRegionOnPrimaryRS(REGION_NUM);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span><a name="line.125"></a> |
| <span class="sourceLineNo">126</span> FavoredNodesPlan currentPlan = rp.getRegionAssignmentSnapshot().getExistingAssignmentPlan();<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // Verify all the region server are update with the latest favored nodes<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> verifyRegionServerUpdated(currentPlan);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> // Test Case 2: To verify whether the region placement tools can<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> // correctly update the new assignment plan to hbase:meta and Region Server.<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> // The new assignment plan is generated by shuffle the existing assignment<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // plan by switching PRIMARY, SECONDARY and TERTIARY nodes.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // Shuffle the plan by switching the secondary region server with<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> // the tertiary.<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> // Shuffle the secondary with tertiary favored nodes<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> FavoredNodesPlan shuffledPlan = this.shuffleAssignmentPlan(currentPlan,<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> FavoredNodesPlan.Position.SECONDARY, FavoredNodesPlan.Position.TERTIARY);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // Let the region placement update the hbase:meta and Region Servers<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> rp.updateAssignmentPlan(shuffledPlan);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> // Verify the region assignment. There are supposed to no region reassignment<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> // All the regions are still on the primary region server<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> verifyRegionAssignment(shuffledPlan,0, REGION_NUM);<a name="line.144"></a> |
| <span class="sourceLineNo">145</span><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> // Shuffle the plan by switching the primary with secondary and<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> // verify the region reassignment is consistent with the plan.<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> shuffledPlan = this.shuffleAssignmentPlan(currentPlan,<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> FavoredNodesPlan.Position.PRIMARY, FavoredNodesPlan.Position.SECONDARY);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span><a name="line.150"></a> |
| <span class="sourceLineNo">151</span> // Let the region placement update the hbase:meta and Region Servers<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> rp.updateAssignmentPlan(shuffledPlan);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span><a name="line.153"></a> |
| <span class="sourceLineNo">154</span> verifyRegionAssignment(shuffledPlan, REGION_NUM, REGION_NUM);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> // also verify that the AssignmentVerificationReport has the correct information<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> RegionPlacementMaintainer rp = new RegionPlacementMaintainer(TEST_UTIL.getConfiguration());<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // we are interested in only one table (and hence one report)<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> rp.setTargetTableName(new String[]{tableStr});<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> List<AssignmentVerificationReport> reports = rp.verifyRegionPlacement(false);<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> AssignmentVerificationReport report = reports.get(0);<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> assertTrue(report.getRegionsWithoutValidFavoredNodes().isEmpty());<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> assertTrue(report.getNonFavoredAssignedRegions().isEmpty());<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> assertTrue(report.getTotalFavoredAssignments() >= REGION_NUM);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY) != 0);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) == 0);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY) == 0);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> assertTrue(report.getUnassignedRegions().isEmpty());<a name="line.168"></a> |
| <span class="sourceLineNo">169</span><a name="line.169"></a> |
| <span class="sourceLineNo">170</span> // Check when a RS stops, the regions get assigned to their secondary/tertiary<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> killRandomServerAndVerifyAssignment();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> // also verify that the AssignmentVerificationReport has the correct information<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> reports = rp.verifyRegionPlacement(false);<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> report = reports.get(0);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> assertTrue(report.getRegionsWithoutValidFavoredNodes().isEmpty());<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> assertTrue(report.getNonFavoredAssignedRegions().isEmpty());<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> assertTrue(report.getTotalFavoredAssignments() >= REGION_NUM);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY) > 0);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> assertTrue("secondary " +<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) + " tertiary "<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> + report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY),<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> (report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) > 0<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> || report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY) > 0));<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> assertTrue((report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY) +<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) +<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY)) == REGION_NUM);<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> RegionPlacementMaintainer.printAssignmentPlan(currentPlan);<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> private void killRandomServerAndVerifyAssignment()<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> throws IOException, InterruptedException, KeeperException {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> ServerName serverToKill = null;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> int killIndex = 0;<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> Random random = new Random(System.currentTimeMillis());<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> ServerName metaServer = TEST_UTIL.getHBaseCluster().getServerHoldingMeta();<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> LOG.debug("Server holding meta " + metaServer);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> boolean isNamespaceServer = false;<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> do {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> // kill a random non-meta server carrying at least one region<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> killIndex = random.nextInt(SLAVES);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> serverToKill = TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getServerName();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> Collection<HRegion> regs =<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getOnlineRegionsLocalContext();<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> isNamespaceServer = false;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> for (HRegion r : regs) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> if (r.getRegionInfo().getTable().getNamespaceAsString()<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> .equals(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR)) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> isNamespaceServer = true;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> break;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> }<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> } while (ServerName.isSameAddress(metaServer, serverToKill) || isNamespaceServer ||<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getNumberOfOnlineRegions() == 0);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> LOG.debug("Stopping RS " + serverToKill);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> Map<RegionInfo, Pair<ServerName, ServerName>> regionsToVerify = new HashMap<>();<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> // mark the regions to track<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> for (Map.Entry<RegionInfo, ServerName[]> entry : favoredNodesAssignmentPlan.entrySet()) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> ServerName s = entry.getValue()[0];<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> if (ServerName.isSameAddress(s, serverToKill)) {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> regionsToVerify.put(entry.getKey(), new Pair<>(entry.getValue()[1], entry.getValue()[2]));<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> LOG.debug("Adding " + entry.getKey() + " with sedcondary/tertiary " +<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> entry.getValue()[1] + " " + entry.getValue()[2]);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> int orig = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> TEST_UTIL.getHBaseCluster().stopRegionServer(serverToKill);<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> TEST_UTIL.getHBaseCluster().waitForRegionServerToStop(serverToKill, 60000);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> int curr = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> while (curr - orig < regionsToVerify.size()) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> LOG.debug("Waiting for " + regionsToVerify.size() + " to come online " +<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> " Current #regions " + curr + " Original #regions " + orig);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> Thread.sleep(200);<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> curr = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> // now verify<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> for (Map.Entry<RegionInfo, Pair<ServerName, ServerName>> entry : regionsToVerify.entrySet()) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> ServerName newDestination = TEST_UTIL.getHBaseCluster().getMaster()<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> .getAssignmentManager().getRegionStates().getRegionServerOfRegion(entry.getKey());<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> Pair<ServerName, ServerName> secondaryTertiaryServers = entry.getValue();<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> LOG.debug("New destination for region " + entry.getKey().getEncodedName() +<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> " " + newDestination +". Secondary/Tertiary are " + secondaryTertiaryServers.getFirst()<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> + "/" + secondaryTertiaryServers.getSecond());<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if (!(ServerName.isSameAddress(newDestination, secondaryTertiaryServers.getFirst())||<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> ServerName.isSameAddress(newDestination, secondaryTertiaryServers.getSecond()))){<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> fail("Region " + entry.getKey() + " not present on any of the expected servers");<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // start(reinstate) region server since we killed one before<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> TEST_UTIL.getHBaseCluster().startRegionServer();<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span><a name="line.252"></a> |
| <span class="sourceLineNo">253</span> /**<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * Used to test the correctness of this class.<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> */<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> @Ignore ("Test for unfinished feature") @Test<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> public void testRandomizedMatrix() {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> int rows = 100;<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> int cols = 100;<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> float[][] matrix = new float[rows][cols];<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> Random random = new Random();<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> for (int i = 0; i < rows; i++) {<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> for (int j = 0; j < cols; j++) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> matrix[i][j] = random.nextFloat();<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> // Test that inverting a transformed matrix gives the original matrix.<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> RegionPlacementMaintainer.RandomizedMatrix rm =<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> new RegionPlacementMaintainer.RandomizedMatrix(rows, cols);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> float[][] transformed = rm.transform(matrix);<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> float[][] invertedTransformed = rm.invert(transformed);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> for (int i = 0; i < rows; i++) {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> for (int j = 0; j < cols; j++) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> if (matrix[i][j] != invertedTransformed[i][j]) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> throw new RuntimeException();<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<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> // Test that the indices on a transformed matrix can be inverted to give<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> // the same values on the original matrix.<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> int[] transformedIndices = new int[rows];<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> for (int i = 0; i < rows; i++) {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> transformedIndices[i] = random.nextInt(cols);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> int[] invertedTransformedIndices = rm.invertIndices(transformedIndices);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> float[] transformedValues = new float[rows];<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> float[] invertedTransformedValues = new float[rows];<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> for (int i = 0; i < rows; i++) {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> transformedValues[i] = transformed[i][transformedIndices[i]];<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> invertedTransformedValues[i] = matrix[i][invertedTransformedIndices[i]];<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> Arrays.sort(transformedValues);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> Arrays.sort(invertedTransformedValues);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> if (!Arrays.equals(transformedValues, invertedTransformedValues)) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> throw new RuntimeException();<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span><a name="line.300"></a> |
| <span class="sourceLineNo">301</span> /**<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * Shuffle the assignment plan by switching two favored node positions.<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> * @param plan The assignment plan<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> * @param p1 The first switch position<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> * @param p2 The second switch position<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> * @return the shuffled assignment plan<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> */<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> private FavoredNodesPlan shuffleAssignmentPlan(FavoredNodesPlan plan,<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> FavoredNodesPlan.Position p1, FavoredNodesPlan.Position p2) throws IOException {<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> FavoredNodesPlan shuffledPlan = new FavoredNodesPlan();<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> Map<String, RegionInfo> regionToHRegion =<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> rp.getRegionAssignmentSnapshot().getRegionNameToRegionInfoMap();<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> for (Map.Entry<String, List<ServerName>> entry :<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> plan.getAssignmentMap().entrySet()) {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> // copy the server list from the original plan<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> List<ServerName> shuffledServerList = new ArrayList<>();<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> shuffledServerList.addAll(entry.getValue());<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> // start to shuffle<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> shuffledServerList.set(p1.ordinal(), entry.getValue().get(p2.ordinal()));<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> shuffledServerList.set(p2.ordinal(), entry.getValue().get(p1.ordinal()));<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> // update the plan<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> shuffledPlan.updateFavoredNodesMap(regionToHRegion.get(entry.getKey()), shuffledServerList);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> return shuffledPlan;<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> /**<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> * To verify the region assignment status.<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * It will check the assignment plan consistency between hbase:meta and<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> * region servers.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> * Also it will verify weather the number of region movement and<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> * the number regions on the primary region server are expected<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> *<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> * @param plan<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> * @param regionMovementNum<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> * @param numRegionsOnPrimaryRS<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * @throws InterruptedException<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> * @throws IOException<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> */<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> private void verifyRegionAssignment(FavoredNodesPlan plan,<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> int regionMovementNum, int numRegionsOnPrimaryRS)<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> throws InterruptedException, IOException {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> // Verify the assignment plan in hbase:meta is consistent with the expected plan.<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> verifyMETAUpdated(plan);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span><a name="line.349"></a> |
| <span class="sourceLineNo">350</span> // Verify the number of region movement is expected<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> verifyRegionMovementNum(regionMovementNum);<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> // Verify the number of regions is assigned to the primary region server<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> // based on the plan is expected<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> verifyRegionOnPrimaryRS(numRegionsOnPrimaryRS);<a name="line.355"></a> |
| <span class="sourceLineNo">356</span><a name="line.356"></a> |
| <span class="sourceLineNo">357</span> // Verify all the online region server are updated with the assignment plan<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> verifyRegionServerUpdated(plan);<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> }<a name="line.359"></a> |
| <span class="sourceLineNo">360</span><a name="line.360"></a> |
| <span class="sourceLineNo">361</span> /**<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> * Verify the meta has updated to the latest assignment plan<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> * @param expectedPlan the region assignment plan<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> * @throws IOException if an IO problem is encountered<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> */<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> private void verifyMETAUpdated(FavoredNodesPlan expectedPlan)<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> throws IOException {<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> FavoredNodesPlan planFromMETA = rp.getRegionAssignmentSnapshot().getExistingAssignmentPlan();<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> assertTrue("The assignment plan is NOT consistent with the expected plan ",<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> planFromMETA.equals(expectedPlan));<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> }<a name="line.371"></a> |
| <span class="sourceLineNo">372</span><a name="line.372"></a> |
| <span class="sourceLineNo">373</span> /**<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> * Verify the number of region movement is expected<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> */<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> private void verifyRegionMovementNum(int expected)<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> throws InterruptedException, IOException {<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> HMaster m = cluster.getMaster();<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> int lastRegionOpenedCount = m.getAssignmentManager().getNumRegionsOpened();<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> // get the assignments start to execute<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> m.balance();<a name="line.382"></a> |
| <span class="sourceLineNo">383</span><a name="line.383"></a> |
| <span class="sourceLineNo">384</span> int retry = 10;<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> long sleep = 3000;<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> int attempt = 0;<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> int currentRegionOpened, regionMovement;<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> do {<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> currentRegionOpened = m.getAssignmentManager().getNumRegionsOpened();<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> regionMovement= currentRegionOpened - lastRegionOpenedCount;<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> LOG.debug("There are " + regionMovement + "/" + expected +<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> " regions moved after " + attempt + " attempts");<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> Thread.sleep((++attempt) * sleep);<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> } while (regionMovement != expected && attempt <= retry);<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> // update the lastRegionOpenedCount<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> lastRegionOpenedCount = currentRegionOpened;<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> assertEquals("There are only " + regionMovement + " instead of "<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> + expected + " region movement for " + attempt + " attempts", expected, regionMovement);<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> /**<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> * Verify the number of user regions is assigned to the primary<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> * region server based on the plan is expected<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> * @param expectedNum the expected number of assigned regions<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> * @throws IOException<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> */<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> private void verifyRegionOnPrimaryRS(int expectedNum)<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> throws IOException {<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> lastRegionOnPrimaryRSCount = getNumRegionisOnPrimaryRS();<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> assertEquals("Only " + expectedNum + " of user regions running " +<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> "on the primary region server", expectedNum ,<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> lastRegionOnPrimaryRSCount);<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> }<a name="line.415"></a> |
| <span class="sourceLineNo">416</span><a name="line.416"></a> |
| <span class="sourceLineNo">417</span> /**<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> * Verify all the online region servers has been updated to the<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> * latest assignment plan<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> * @param plan<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> * @throws IOException<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> */<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> private void verifyRegionServerUpdated(FavoredNodesPlan plan) throws IOException {<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> // Verify all region servers contain the correct favored nodes information<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> for (int i = 0; i < SLAVES; i++) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> HRegionServer rs = cluster.getRegionServer(i);<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> for (Region region: rs.getRegions(TableName.valueOf("testRegionAssignment"))) {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> InetSocketAddress[] favoredSocketAddress = rs.getFavoredNodesForRegion(<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> region.getRegionInfo().getEncodedName());<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> String regionName = region.getRegionInfo().getRegionNameAsString();<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> List<ServerName> favoredServerList = plan.getAssignmentMap().get(regionName);<a name="line.432"></a> |
| <span class="sourceLineNo">433</span><a name="line.433"></a> |
| <span class="sourceLineNo">434</span> // All regions are supposed to have favored nodes,<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> // except for hbase:meta and ROOT<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> if (favoredServerList == null) {<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> TableDescriptor desc = region.getTableDescriptor();<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> // Verify they are ROOT and hbase:meta regions since no favored nodes<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> assertNull(favoredSocketAddress);<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> assertTrue("User region " +<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> region.getTableDescriptor().getTableName() +<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> " should have favored nodes", desc.isMetaRegion());<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> } else {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> // For user region, the favored nodes in the region server should be<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> // identical to favored nodes in the assignmentPlan<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> assertTrue(favoredSocketAddress.length == favoredServerList.size());<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> assertTrue(favoredServerList.size() > 0);<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> for (int j = 0; j < favoredServerList.size(); j++) {<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> InetSocketAddress addrFromRS = favoredSocketAddress[j];<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> InetSocketAddress addrFromPlan = InetSocketAddress.createUnresolved(<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> favoredServerList.get(j).getHostname(), favoredServerList.get(j).getPort());<a name="line.451"></a> |
| <span class="sourceLineNo">452</span><a name="line.452"></a> |
| <span class="sourceLineNo">453</span> assertNotNull(addrFromRS);<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> assertNotNull(addrFromPlan);<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> assertTrue("Region server " + rs.getServerName().getAddress()<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> + " has the " + positions[j] +<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> " for region " + region.getRegionInfo().getRegionNameAsString() + " is " +<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> addrFromRS + " which is inconsistent with the plan "<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> + addrFromPlan, addrFromRS.equals(addrFromPlan));<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> }<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> }<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> }<a name="line.464"></a> |
| <span class="sourceLineNo">465</span><a name="line.465"></a> |
| <span class="sourceLineNo">466</span> /**<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> * Check whether regions are assigned to servers consistent with the explicit<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> * hints that are persisted in the hbase:meta table.<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> * Also keep track of the number of the regions are assigned to the<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> * primary region server.<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> * @return the number of regions are assigned to the primary region server<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> * @throws IOException<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> */<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> private int getNumRegionisOnPrimaryRS() throws IOException {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> final AtomicInteger regionOnPrimaryNum = new AtomicInteger(0);<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> final AtomicInteger totalRegionNum = new AtomicInteger(0);<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> LOG.info("The start of region placement verification");<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> ClientMetaTableAccessor.Visitor visitor = new ClientMetaTableAccessor.Visitor() {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> @Override<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> public boolean visit(Result result) throws IOException {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> try {<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> @SuppressWarnings("deprecation")<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> RegionInfo info = CatalogFamilyFormat.getRegionInfo(result);<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> if(info.getTable().getNamespaceAsString()<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> .equals(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR)) {<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> return true;<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> }<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> byte[] server = result.getValue(HConstants.CATALOG_FAMILY,<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> HConstants.SERVER_QUALIFIER);<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> byte[] favoredNodes = result.getValue(HConstants.CATALOG_FAMILY,<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> FavoredNodeAssignmentHelper.FAVOREDNODES_QUALIFIER);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> // Add the favored nodes into assignment plan<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> ServerName[] favoredServerList =<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> FavoredNodeAssignmentHelper.getFavoredNodesList(favoredNodes);<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> favoredNodesAssignmentPlan.put(info, favoredServerList);<a name="line.495"></a> |
| <span class="sourceLineNo">496</span><a name="line.496"></a> |
| <span class="sourceLineNo">497</span> Position[] positions = Position.values();<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> if (info != null) {<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> totalRegionNum.incrementAndGet();<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> if (server != null) {<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> ServerName serverName =<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> ServerName.valueOf(Bytes.toString(server), -1);<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> if (favoredNodes != null) {<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> String placement = "[NOT FAVORED NODE]";<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> for (int i = 0; i < favoredServerList.length; i++) {<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> if (favoredServerList[i].equals(serverName)) {<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> placement = positions[i].toString();<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> if (i == Position.PRIMARY.ordinal()) {<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> regionOnPrimaryNum.incrementAndGet();<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> }<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> break;<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> }<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> }<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> LOG.info(info.getRegionNameAsString() + " on " +<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> serverName + " " + placement);<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> } else {<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> LOG.info(info.getRegionNameAsString() + " running on " +<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> serverName + " but there is no favored region server");<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> }<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> } else {<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> LOG.info(info.getRegionNameAsString() +<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> " not assigned to any server");<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> }<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> }<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> return true;<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> } catch (RuntimeException e) {<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> LOG.error("Result=" + result);<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> throw e;<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> }<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> }<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> };<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> MetaTableAccessor.fullScanRegions(CONNECTION, visitor);<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> LOG.info("There are " + regionOnPrimaryNum.intValue() + " out of " +<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> totalRegionNum.intValue() + " regions running on the primary" +<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> " region servers" );<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> return regionOnPrimaryNum.intValue() ;<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> }<a name="line.537"></a> |
| <span class="sourceLineNo">538</span><a name="line.538"></a> |
| <span class="sourceLineNo">539</span> /**<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> * Create a table with specified table name and region number.<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> * @param tableName the name of the table to be created<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> * @param regionNum number of regions to create<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> * @throws IOException<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> */<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> private static void createTable(TableName tableName, int regionNum)<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> throws IOException {<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> int expectedRegions = regionNum;<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> byte[][] splitKeys = new byte[expectedRegions - 1][];<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> for (int i = 1; i < expectedRegions; i++) {<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> byte splitKey = (byte) i;<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> splitKeys[i - 1] = new byte[] { splitKey, splitKey, splitKey };<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> }<a name="line.552"></a> |
| <span class="sourceLineNo">553</span><a name="line.553"></a> |
| <span class="sourceLineNo">554</span> TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName)<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(HConstants.CATALOG_FAMILY)).build();<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> admin.createTable(tableDescriptor, splitKeys);<a name="line.556"></a> |
| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> try (RegionLocator r = CONNECTION.getRegionLocator(tableName)) {<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> List<HRegionLocation> regions = r.getAllRegionLocations();<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> assertEquals("Tried to create " + expectedRegions + " regions "<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> + "but only found " + regions.size(), expectedRegions, regions.size());<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> }<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> }<a name="line.563"></a> |
| <span class="sourceLineNo">564</span>}<a name="line.564"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
