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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;</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.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertNotNull;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertNull;</span> |
| <span class="source-line-no">023</span><span id="line-23">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">024</span><span id="line-24">import static org.junit.Assert.fail;</span> |
| <span class="source-line-no">025</span><span id="line-25"></span> |
| <span class="source-line-no">026</span><span id="line-26">import java.io.IOException;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.net.InetSocketAddress;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.ArrayList;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.Arrays;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.Collection;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.HashMap;</span> |
| <span class="source-line-no">032</span><span id="line-32">import java.util.List;</span> |
| <span class="source-line-no">033</span><span id="line-33">import java.util.Map;</span> |
| <span class="source-line-no">034</span><span id="line-34">import java.util.Random;</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.concurrent.atomic.AtomicInteger;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.CatalogFamilyFormat;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.ClientMetaTableAccessor;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.HRegionLocation;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.MetaTableAccessor;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.NamespaceDescriptor;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.SingleProcessHBaseCluster;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.client.Admin;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.client.Connection;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.client.RegionLocator;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.apache.hadoop.hbase.client.Result;</span> |
| <span class="source-line-no">055</span><span id="line-55">import org.apache.hadoop.hbase.client.TableDescriptor;</span> |
| <span class="source-line-no">056</span><span id="line-56">import org.apache.hadoop.hbase.client.TableDescriptorBuilder;</span> |
| <span class="source-line-no">057</span><span id="line-57">import org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper;</span> |
| <span class="source-line-no">058</span><span id="line-58">import org.apache.hadoop.hbase.favored.FavoredNodeLoadBalancer;</span> |
| <span class="source-line-no">059</span><span id="line-59">import org.apache.hadoop.hbase.favored.FavoredNodesPlan;</span> |
| <span class="source-line-no">060</span><span id="line-60">import org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position;</span> |
| <span class="source-line-no">061</span><span id="line-61">import org.apache.hadoop.hbase.regionserver.HRegion;</span> |
| <span class="source-line-no">062</span><span id="line-62">import org.apache.hadoop.hbase.regionserver.HRegionServer;</span> |
| <span class="source-line-no">063</span><span id="line-63">import org.apache.hadoop.hbase.regionserver.Region;</span> |
| <span class="source-line-no">064</span><span id="line-64">import org.apache.hadoop.hbase.testclassification.MasterTests;</span> |
| <span class="source-line-no">065</span><span id="line-65">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">066</span><span id="line-66">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">067</span><span id="line-67">import org.apache.hadoop.hbase.util.Pair;</span> |
| <span class="source-line-no">068</span><span id="line-68">import org.apache.zookeeper.KeeperException;</span> |
| <span class="source-line-no">069</span><span id="line-69">import org.junit.AfterClass;</span> |
| <span class="source-line-no">070</span><span id="line-70">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">071</span><span id="line-71">import org.junit.ClassRule;</span> |
| <span class="source-line-no">072</span><span id="line-72">import org.junit.Ignore;</span> |
| <span class="source-line-no">073</span><span id="line-73">import org.junit.Test;</span> |
| <span class="source-line-no">074</span><span id="line-74">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">075</span><span id="line-75">import org.slf4j.Logger;</span> |
| <span class="source-line-no">076</span><span id="line-76">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78">@Category({ MasterTests.class, MediumTests.class })</span> |
| <span class="source-line-no">079</span><span id="line-79">public class TestRegionPlacement {</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> @ClassRule</span> |
| <span class="source-line-no">082</span><span id="line-82"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">083</span><span id="line-83"> HBaseClassTestRule.forClass(TestRegionPlacement.class);</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> private static final Logger LOG = LoggerFactory.getLogger(TestRegionPlacement.class);</span> |
| <span class="source-line-no">086</span><span id="line-86"> private final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">087</span><span id="line-87"> private final static int SLAVES = 10;</span> |
| <span class="source-line-no">088</span><span id="line-88"> private static Connection CONNECTION;</span> |
| <span class="source-line-no">089</span><span id="line-89"> private static Admin admin;</span> |
| <span class="source-line-no">090</span><span id="line-90"> private static RegionPlacementMaintainer rp;</span> |
| <span class="source-line-no">091</span><span id="line-91"> private static Position[] positions = Position.values();</span> |
| <span class="source-line-no">092</span><span id="line-92"> private int lastRegionOnPrimaryRSCount = 0;</span> |
| <span class="source-line-no">093</span><span id="line-93"> private int REGION_NUM = 10;</span> |
| <span class="source-line-no">094</span><span id="line-94"> private Map<RegionInfo, ServerName[]> favoredNodesAssignmentPlan = new HashMap<>();</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> @BeforeClass</span> |
| <span class="source-line-no">097</span><span id="line-97"> public static void setupBeforeClass() throws Exception {</span> |
| <span class="source-line-no">098</span><span id="line-98"> Configuration conf = TEST_UTIL.getConfiguration();</span> |
| <span class="source-line-no">099</span><span id="line-99"> // Enable the favored nodes based load balancer</span> |
| <span class="source-line-no">100</span><span id="line-100"> conf.setClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS, FavoredNodeLoadBalancer.class,</span> |
| <span class="source-line-no">101</span><span id="line-101"> LoadBalancer.class);</span> |
| <span class="source-line-no">102</span><span id="line-102"> conf.setBoolean("hbase.tests.use.shortcircuit.reads", false);</span> |
| <span class="source-line-no">103</span><span id="line-103"> TEST_UTIL.startMiniCluster(SLAVES);</span> |
| <span class="source-line-no">104</span><span id="line-104"> CONNECTION = TEST_UTIL.getConnection();</span> |
| <span class="source-line-no">105</span><span id="line-105"> admin = CONNECTION.getAdmin();</span> |
| <span class="source-line-no">106</span><span id="line-106"> rp = new RegionPlacementMaintainer(conf);</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> @AfterClass</span> |
| <span class="source-line-no">110</span><span id="line-110"> public static void tearDownAfterClass() throws Exception {</span> |
| <span class="source-line-no">111</span><span id="line-111"> TEST_UTIL.shutdownMiniCluster();</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"></span> |
| <span class="source-line-no">114</span><span id="line-114"> @Ignore("Test for unfinished feature")</span> |
| <span class="source-line-no">115</span><span id="line-115"> @Test</span> |
| <span class="source-line-no">116</span><span id="line-116"> public void testRegionPlacement() throws Exception {</span> |
| <span class="source-line-no">117</span><span id="line-117"> String tableStr = "testRegionAssignment";</span> |
| <span class="source-line-no">118</span><span id="line-118"> TableName table = TableName.valueOf(tableStr);</span> |
| <span class="source-line-no">119</span><span id="line-119"> // Create a table with REGION_NUM regions.</span> |
| <span class="source-line-no">120</span><span id="line-120"> createTable(table, REGION_NUM);</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> TEST_UTIL.waitTableAvailable(table);</span> |
| <span class="source-line-no">123</span><span id="line-123"></span> |
| <span class="source-line-no">124</span><span id="line-124"> // Verify all the user regions are assigned to the primary region server</span> |
| <span class="source-line-no">125</span><span id="line-125"> // based on the plan</span> |
| <span class="source-line-no">126</span><span id="line-126"> verifyRegionOnPrimaryRS(REGION_NUM);</span> |
| <span class="source-line-no">127</span><span id="line-127"></span> |
| <span class="source-line-no">128</span><span id="line-128"> FavoredNodesPlan currentPlan = rp.getRegionAssignmentSnapshot().getExistingAssignmentPlan();</span> |
| <span class="source-line-no">129</span><span id="line-129"> // Verify all the region server are update with the latest favored nodes</span> |
| <span class="source-line-no">130</span><span id="line-130"> verifyRegionServerUpdated(currentPlan);</span> |
| <span class="source-line-no">131</span><span id="line-131"> // Test Case 2: To verify whether the region placement tools can</span> |
| <span class="source-line-no">132</span><span id="line-132"> // correctly update the new assignment plan to hbase:meta and Region Server.</span> |
| <span class="source-line-no">133</span><span id="line-133"> // The new assignment plan is generated by shuffle the existing assignment</span> |
| <span class="source-line-no">134</span><span id="line-134"> // plan by switching PRIMARY, SECONDARY and TERTIARY nodes.</span> |
| <span class="source-line-no">135</span><span id="line-135"> // Shuffle the plan by switching the secondary region server with</span> |
| <span class="source-line-no">136</span><span id="line-136"> // the tertiary.</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> // Shuffle the secondary with tertiary favored nodes</span> |
| <span class="source-line-no">139</span><span id="line-139"> FavoredNodesPlan shuffledPlan = this.shuffleAssignmentPlan(currentPlan,</span> |
| <span class="source-line-no">140</span><span id="line-140"> FavoredNodesPlan.Position.SECONDARY, FavoredNodesPlan.Position.TERTIARY);</span> |
| <span class="source-line-no">141</span><span id="line-141"> // Let the region placement update the hbase:meta and Region Servers</span> |
| <span class="source-line-no">142</span><span id="line-142"> rp.updateAssignmentPlan(shuffledPlan);</span> |
| <span class="source-line-no">143</span><span id="line-143"></span> |
| <span class="source-line-no">144</span><span id="line-144"> // Verify the region assignment. There are supposed to no region reassignment</span> |
| <span class="source-line-no">145</span><span id="line-145"> // All the regions are still on the primary region server</span> |
| <span class="source-line-no">146</span><span id="line-146"> verifyRegionAssignment(shuffledPlan, 0, REGION_NUM);</span> |
| <span class="source-line-no">147</span><span id="line-147"></span> |
| <span class="source-line-no">148</span><span id="line-148"> // Shuffle the plan by switching the primary with secondary and</span> |
| <span class="source-line-no">149</span><span id="line-149"> // verify the region reassignment is consistent with the plan.</span> |
| <span class="source-line-no">150</span><span id="line-150"> shuffledPlan = this.shuffleAssignmentPlan(currentPlan, FavoredNodesPlan.Position.PRIMARY,</span> |
| <span class="source-line-no">151</span><span id="line-151"> FavoredNodesPlan.Position.SECONDARY);</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> // Let the region placement update the hbase:meta and Region Servers</span> |
| <span class="source-line-no">154</span><span id="line-154"> rp.updateAssignmentPlan(shuffledPlan);</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> verifyRegionAssignment(shuffledPlan, REGION_NUM, REGION_NUM);</span> |
| <span class="source-line-no">157</span><span id="line-157"></span> |
| <span class="source-line-no">158</span><span id="line-158"> // also verify that the AssignmentVerificationReport has the correct information</span> |
| <span class="source-line-no">159</span><span id="line-159"> RegionPlacementMaintainer rp = new RegionPlacementMaintainer(TEST_UTIL.getConfiguration());</span> |
| <span class="source-line-no">160</span><span id="line-160"> // we are interested in only one table (and hence one report)</span> |
| <span class="source-line-no">161</span><span id="line-161"> rp.setTargetTableName(new String[] { tableStr });</span> |
| <span class="source-line-no">162</span><span id="line-162"> List<AssignmentVerificationReport> reports = rp.verifyRegionPlacement(false);</span> |
| <span class="source-line-no">163</span><span id="line-163"> AssignmentVerificationReport report = reports.get(0);</span> |
| <span class="source-line-no">164</span><span id="line-164"> assertTrue(report.getRegionsWithoutValidFavoredNodes().isEmpty());</span> |
| <span class="source-line-no">165</span><span id="line-165"> assertTrue(report.getNonFavoredAssignedRegions().isEmpty());</span> |
| <span class="source-line-no">166</span><span id="line-166"> assertTrue(report.getTotalFavoredAssignments() >= REGION_NUM);</span> |
| <span class="source-line-no">167</span><span id="line-167"> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY) != 0);</span> |
| <span class="source-line-no">168</span><span id="line-168"> assertTrue(</span> |
| <span class="source-line-no">169</span><span id="line-169"> report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) == 0);</span> |
| <span class="source-line-no">170</span><span id="line-170"> assertTrue(</span> |
| <span class="source-line-no">171</span><span id="line-171"> report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY) == 0);</span> |
| <span class="source-line-no">172</span><span id="line-172"> assertTrue(report.getUnassignedRegions().isEmpty());</span> |
| <span class="source-line-no">173</span><span id="line-173"></span> |
| <span class="source-line-no">174</span><span id="line-174"> // Check when a RS stops, the regions get assigned to their secondary/tertiary</span> |
| <span class="source-line-no">175</span><span id="line-175"> killRandomServerAndVerifyAssignment();</span> |
| <span class="source-line-no">176</span><span id="line-176"></span> |
| <span class="source-line-no">177</span><span id="line-177"> // also verify that the AssignmentVerificationReport has the correct information</span> |
| <span class="source-line-no">178</span><span id="line-178"> reports = rp.verifyRegionPlacement(false);</span> |
| <span class="source-line-no">179</span><span id="line-179"> report = reports.get(0);</span> |
| <span class="source-line-no">180</span><span id="line-180"> assertTrue(report.getRegionsWithoutValidFavoredNodes().isEmpty());</span> |
| <span class="source-line-no">181</span><span id="line-181"> assertTrue(report.getNonFavoredAssignedRegions().isEmpty());</span> |
| <span class="source-line-no">182</span><span id="line-182"> assertTrue(report.getTotalFavoredAssignments() >= REGION_NUM);</span> |
| <span class="source-line-no">183</span><span id="line-183"> assertTrue(report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY) > 0);</span> |
| <span class="source-line-no">184</span><span id="line-184"> assertTrue(</span> |
| <span class="source-line-no">185</span><span id="line-185"> "secondary "</span> |
| <span class="source-line-no">186</span><span id="line-186"> + report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY)</span> |
| <span class="source-line-no">187</span><span id="line-187"> + " tertiary "</span> |
| <span class="source-line-no">188</span><span id="line-188"> + report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY),</span> |
| <span class="source-line-no">189</span><span id="line-189"> (report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY) > 0</span> |
| <span class="source-line-no">190</span><span id="line-190"> || report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY) > 0));</span> |
| <span class="source-line-no">191</span><span id="line-191"> assertTrue((report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.PRIMARY)</span> |
| <span class="source-line-no">192</span><span id="line-192"> + report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.SECONDARY)</span> |
| <span class="source-line-no">193</span><span id="line-193"> + report.getNumRegionsOnFavoredNodeByPosition(FavoredNodesPlan.Position.TERTIARY))</span> |
| <span class="source-line-no">194</span><span id="line-194"> == REGION_NUM);</span> |
| <span class="source-line-no">195</span><span id="line-195"> RegionPlacementMaintainer.printAssignmentPlan(currentPlan);</span> |
| <span class="source-line-no">196</span><span id="line-196"> }</span> |
| <span class="source-line-no">197</span><span id="line-197"></span> |
| <span class="source-line-no">198</span><span id="line-198"> private void killRandomServerAndVerifyAssignment()</span> |
| <span class="source-line-no">199</span><span id="line-199"> throws IOException, InterruptedException, KeeperException {</span> |
| <span class="source-line-no">200</span><span id="line-200"> ServerName serverToKill = null;</span> |
| <span class="source-line-no">201</span><span id="line-201"> int killIndex = 0;</span> |
| <span class="source-line-no">202</span><span id="line-202"> Random rand = ThreadLocalRandom.current();</span> |
| <span class="source-line-no">203</span><span id="line-203"> ServerName metaServer = TEST_UTIL.getHBaseCluster().getServerHoldingMeta();</span> |
| <span class="source-line-no">204</span><span id="line-204"> LOG.debug("Server holding meta " + metaServer);</span> |
| <span class="source-line-no">205</span><span id="line-205"> boolean isNamespaceServer = false;</span> |
| <span class="source-line-no">206</span><span id="line-206"> do {</span> |
| <span class="source-line-no">207</span><span id="line-207"> // kill a random non-meta server carrying at least one region</span> |
| <span class="source-line-no">208</span><span id="line-208"> killIndex = rand.nextInt(SLAVES);</span> |
| <span class="source-line-no">209</span><span id="line-209"> serverToKill = TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getServerName();</span> |
| <span class="source-line-no">210</span><span id="line-210"> Collection<HRegion> regs =</span> |
| <span class="source-line-no">211</span><span id="line-211"> TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getOnlineRegionsLocalContext();</span> |
| <span class="source-line-no">212</span><span id="line-212"> isNamespaceServer = false;</span> |
| <span class="source-line-no">213</span><span id="line-213"> for (HRegion r : regs) {</span> |
| <span class="source-line-no">214</span><span id="line-214"> if (</span> |
| <span class="source-line-no">215</span><span id="line-215"> r.getRegionInfo().getTable().getNamespaceAsString()</span> |
| <span class="source-line-no">216</span><span id="line-216"> .equals(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR)</span> |
| <span class="source-line-no">217</span><span id="line-217"> ) {</span> |
| <span class="source-line-no">218</span><span id="line-218"> isNamespaceServer = true;</span> |
| <span class="source-line-no">219</span><span id="line-219"> break;</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"> } while (</span> |
| <span class="source-line-no">223</span><span id="line-223"> ServerName.isSameAddress(metaServer, serverToKill) || isNamespaceServer</span> |
| <span class="source-line-no">224</span><span id="line-224"> || TEST_UTIL.getHBaseCluster().getRegionServer(killIndex).getNumberOfOnlineRegions() == 0</span> |
| <span class="source-line-no">225</span><span id="line-225"> );</span> |
| <span class="source-line-no">226</span><span id="line-226"> LOG.debug("Stopping RS " + serverToKill);</span> |
| <span class="source-line-no">227</span><span id="line-227"> Map<RegionInfo, Pair<ServerName, ServerName>> regionsToVerify = new HashMap<>();</span> |
| <span class="source-line-no">228</span><span id="line-228"> // mark the regions to track</span> |
| <span class="source-line-no">229</span><span id="line-229"> for (Map.Entry<RegionInfo, ServerName[]> entry : favoredNodesAssignmentPlan.entrySet()) {</span> |
| <span class="source-line-no">230</span><span id="line-230"> ServerName s = entry.getValue()[0];</span> |
| <span class="source-line-no">231</span><span id="line-231"> if (ServerName.isSameAddress(s, serverToKill)) {</span> |
| <span class="source-line-no">232</span><span id="line-232"> regionsToVerify.put(entry.getKey(), new Pair<>(entry.getValue()[1], entry.getValue()[2]));</span> |
| <span class="source-line-no">233</span><span id="line-233"> LOG.debug("Adding " + entry.getKey() + " with sedcondary/tertiary " + entry.getValue()[1]</span> |
| <span class="source-line-no">234</span><span id="line-234"> + " " + entry.getValue()[2]);</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"> int orig = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();</span> |
| <span class="source-line-no">238</span><span id="line-238"> TEST_UTIL.getHBaseCluster().stopRegionServer(serverToKill);</span> |
| <span class="source-line-no">239</span><span id="line-239"> TEST_UTIL.getHBaseCluster().waitForRegionServerToStop(serverToKill, 60000);</span> |
| <span class="source-line-no">240</span><span id="line-240"> int curr = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();</span> |
| <span class="source-line-no">241</span><span id="line-241"> while (curr - orig < regionsToVerify.size()) {</span> |
| <span class="source-line-no">242</span><span id="line-242"> LOG.debug("Waiting for " + regionsToVerify.size() + " to come online " + " Current #regions "</span> |
| <span class="source-line-no">243</span><span id="line-243"> + curr + " Original #regions " + orig);</span> |
| <span class="source-line-no">244</span><span id="line-244"> Thread.sleep(200);</span> |
| <span class="source-line-no">245</span><span id="line-245"> curr = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager().getNumRegionsOpened();</span> |
| <span class="source-line-no">246</span><span id="line-246"> }</span> |
| <span class="source-line-no">247</span><span id="line-247"> // now verify</span> |
| <span class="source-line-no">248</span><span id="line-248"> for (Map.Entry<RegionInfo, Pair<ServerName, ServerName>> entry : regionsToVerify.entrySet()) {</span> |
| <span class="source-line-no">249</span><span id="line-249"> ServerName newDestination = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager()</span> |
| <span class="source-line-no">250</span><span id="line-250"> .getRegionStates().getRegionServerOfRegion(entry.getKey());</span> |
| <span class="source-line-no">251</span><span id="line-251"> Pair<ServerName, ServerName> secondaryTertiaryServers = entry.getValue();</span> |
| <span class="source-line-no">252</span><span id="line-252"> LOG.debug("New destination for region " + entry.getKey().getEncodedName() + " "</span> |
| <span class="source-line-no">253</span><span id="line-253"> + newDestination + ". Secondary/Tertiary are " + secondaryTertiaryServers.getFirst() + "/"</span> |
| <span class="source-line-no">254</span><span id="line-254"> + secondaryTertiaryServers.getSecond());</span> |
| <span class="source-line-no">255</span><span id="line-255"> if (</span> |
| <span class="source-line-no">256</span><span id="line-256"> !(ServerName.isSameAddress(newDestination, secondaryTertiaryServers.getFirst())</span> |
| <span class="source-line-no">257</span><span id="line-257"> || ServerName.isSameAddress(newDestination, secondaryTertiaryServers.getSecond()))</span> |
| <span class="source-line-no">258</span><span id="line-258"> ) {</span> |
| <span class="source-line-no">259</span><span id="line-259"> fail("Region " + entry.getKey() + " not present on any of the expected servers");</span> |
| <span class="source-line-no">260</span><span id="line-260"> }</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</span> |
| <span class="source-line-no">262</span><span id="line-262"> // start(reinstate) region server since we killed one before</span> |
| <span class="source-line-no">263</span><span id="line-263"> TEST_UTIL.getHBaseCluster().startRegionServer();</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"> /**</span> |
| <span class="source-line-no">267</span><span id="line-267"> * Used to test the correctness of this class.</span> |
| <span class="source-line-no">268</span><span id="line-268"> */</span> |
| <span class="source-line-no">269</span><span id="line-269"> @Ignore("Test for unfinished feature")</span> |
| <span class="source-line-no">270</span><span id="line-270"> @Test</span> |
| <span class="source-line-no">271</span><span id="line-271"> public void testRandomizedMatrix() {</span> |
| <span class="source-line-no">272</span><span id="line-272"> int rows = 100;</span> |
| <span class="source-line-no">273</span><span id="line-273"> int cols = 100;</span> |
| <span class="source-line-no">274</span><span id="line-274"> float[][] matrix = new float[rows][cols];</span> |
| <span class="source-line-no">275</span><span id="line-275"> Random rand = ThreadLocalRandom.current();</span> |
| <span class="source-line-no">276</span><span id="line-276"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">277</span><span id="line-277"> for (int j = 0; j < cols; j++) {</span> |
| <span class="source-line-no">278</span><span id="line-278"> matrix[i][j] = rand.nextFloat();</span> |
| <span class="source-line-no">279</span><span id="line-279"> }</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</span> |
| <span class="source-line-no">281</span><span id="line-281"></span> |
| <span class="source-line-no">282</span><span id="line-282"> // Test that inverting a transformed matrix gives the original matrix.</span> |
| <span class="source-line-no">283</span><span id="line-283"> RegionPlacementMaintainer.RandomizedMatrix rm =</span> |
| <span class="source-line-no">284</span><span id="line-284"> new RegionPlacementMaintainer.RandomizedMatrix(rows, cols);</span> |
| <span class="source-line-no">285</span><span id="line-285"> float[][] transformed = rm.transform(matrix);</span> |
| <span class="source-line-no">286</span><span id="line-286"> float[][] invertedTransformed = rm.invert(transformed);</span> |
| <span class="source-line-no">287</span><span id="line-287"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">288</span><span id="line-288"> for (int j = 0; j < cols; j++) {</span> |
| <span class="source-line-no">289</span><span id="line-289"> if (matrix[i][j] != invertedTransformed[i][j]) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> throw new RuntimeException();</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</span> |
| <span class="source-line-no">292</span><span id="line-292"> }</span> |
| <span class="source-line-no">293</span><span id="line-293"> }</span> |
| <span class="source-line-no">294</span><span id="line-294"></span> |
| <span class="source-line-no">295</span><span id="line-295"> // Test that the indices on a transformed matrix can be inverted to give</span> |
| <span class="source-line-no">296</span><span id="line-296"> // the same values on the original matrix.</span> |
| <span class="source-line-no">297</span><span id="line-297"> int[] transformedIndices = new int[rows];</span> |
| <span class="source-line-no">298</span><span id="line-298"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">299</span><span id="line-299"> transformedIndices[i] = rand.nextInt(cols);</span> |
| <span class="source-line-no">300</span><span id="line-300"> }</span> |
| <span class="source-line-no">301</span><span id="line-301"> int[] invertedTransformedIndices = rm.invertIndices(transformedIndices);</span> |
| <span class="source-line-no">302</span><span id="line-302"> float[] transformedValues = new float[rows];</span> |
| <span class="source-line-no">303</span><span id="line-303"> float[] invertedTransformedValues = new float[rows];</span> |
| <span class="source-line-no">304</span><span id="line-304"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">305</span><span id="line-305"> transformedValues[i] = transformed[i][transformedIndices[i]];</span> |
| <span class="source-line-no">306</span><span id="line-306"> invertedTransformedValues[i] = matrix[i][invertedTransformedIndices[i]];</span> |
| <span class="source-line-no">307</span><span id="line-307"> }</span> |
| <span class="source-line-no">308</span><span id="line-308"> Arrays.sort(transformedValues);</span> |
| <span class="source-line-no">309</span><span id="line-309"> Arrays.sort(invertedTransformedValues);</span> |
| <span class="source-line-no">310</span><span id="line-310"> if (!Arrays.equals(transformedValues, invertedTransformedValues)) {</span> |
| <span class="source-line-no">311</span><span id="line-311"> throw new RuntimeException();</span> |
| <span class="source-line-no">312</span><span id="line-312"> }</span> |
| <span class="source-line-no">313</span><span id="line-313"> }</span> |
| <span class="source-line-no">314</span><span id="line-314"></span> |
| <span class="source-line-no">315</span><span id="line-315"> /**</span> |
| <span class="source-line-no">316</span><span id="line-316"> * Shuffle the assignment plan by switching two favored node positions.</span> |
| <span class="source-line-no">317</span><span id="line-317"> * @param plan The assignment plan</span> |
| <span class="source-line-no">318</span><span id="line-318"> * @param p1 The first switch position</span> |
| <span class="source-line-no">319</span><span id="line-319"> * @param p2 The second switch position</span> |
| <span class="source-line-no">320</span><span id="line-320"> * @return the shuffled assignment plan</span> |
| <span class="source-line-no">321</span><span id="line-321"> */</span> |
| <span class="source-line-no">322</span><span id="line-322"> private FavoredNodesPlan shuffleAssignmentPlan(FavoredNodesPlan plan,</span> |
| <span class="source-line-no">323</span><span id="line-323"> FavoredNodesPlan.Position p1, FavoredNodesPlan.Position p2) throws IOException {</span> |
| <span class="source-line-no">324</span><span id="line-324"> FavoredNodesPlan shuffledPlan = new FavoredNodesPlan();</span> |
| <span class="source-line-no">325</span><span id="line-325"></span> |
| <span class="source-line-no">326</span><span id="line-326"> Map<String, RegionInfo> regionToHRegion =</span> |
| <span class="source-line-no">327</span><span id="line-327"> rp.getRegionAssignmentSnapshot().getRegionNameToRegionInfoMap();</span> |
| <span class="source-line-no">328</span><span id="line-328"> for (Map.Entry<String, List<ServerName>> entry : plan.getAssignmentMap().entrySet()) {</span> |
| <span class="source-line-no">329</span><span id="line-329"></span> |
| <span class="source-line-no">330</span><span id="line-330"> // copy the server list from the original plan</span> |
| <span class="source-line-no">331</span><span id="line-331"> List<ServerName> shuffledServerList = new ArrayList<>();</span> |
| <span class="source-line-no">332</span><span id="line-332"> shuffledServerList.addAll(entry.getValue());</span> |
| <span class="source-line-no">333</span><span id="line-333"></span> |
| <span class="source-line-no">334</span><span id="line-334"> // start to shuffle</span> |
| <span class="source-line-no">335</span><span id="line-335"> shuffledServerList.set(p1.ordinal(), entry.getValue().get(p2.ordinal()));</span> |
| <span class="source-line-no">336</span><span id="line-336"> shuffledServerList.set(p2.ordinal(), entry.getValue().get(p1.ordinal()));</span> |
| <span class="source-line-no">337</span><span id="line-337"></span> |
| <span class="source-line-no">338</span><span id="line-338"> // update the plan</span> |
| <span class="source-line-no">339</span><span id="line-339"> shuffledPlan.updateFavoredNodesMap(regionToHRegion.get(entry.getKey()), shuffledServerList);</span> |
| <span class="source-line-no">340</span><span id="line-340"> }</span> |
| <span class="source-line-no">341</span><span id="line-341"> return shuffledPlan;</span> |
| <span class="source-line-no">342</span><span id="line-342"> }</span> |
| <span class="source-line-no">343</span><span id="line-343"></span> |
| <span class="source-line-no">344</span><span id="line-344"> /**</span> |
| <span class="source-line-no">345</span><span id="line-345"> * To verify the region assignment status. It will check the assignment plan consistency between</span> |
| <span class="source-line-no">346</span><span id="line-346"> * hbase:meta and region servers. Also it will verify weather the number of region movement and</span> |
| <span class="source-line-no">347</span><span id="line-347"> * the number regions on the primary region server are expected</span> |
| <span class="source-line-no">348</span><span id="line-348"> */</span> |
| <span class="source-line-no">349</span><span id="line-349"> private void verifyRegionAssignment(FavoredNodesPlan plan, int regionMovementNum,</span> |
| <span class="source-line-no">350</span><span id="line-350"> int numRegionsOnPrimaryRS) throws InterruptedException, IOException {</span> |
| <span class="source-line-no">351</span><span id="line-351"> // Verify the assignment plan in hbase:meta is consistent with the expected plan.</span> |
| <span class="source-line-no">352</span><span id="line-352"> verifyMETAUpdated(plan);</span> |
| <span class="source-line-no">353</span><span id="line-353"></span> |
| <span class="source-line-no">354</span><span id="line-354"> // Verify the number of region movement is expected</span> |
| <span class="source-line-no">355</span><span id="line-355"> verifyRegionMovementNum(regionMovementNum);</span> |
| <span class="source-line-no">356</span><span id="line-356"></span> |
| <span class="source-line-no">357</span><span id="line-357"> // Verify the number of regions is assigned to the primary region server</span> |
| <span class="source-line-no">358</span><span id="line-358"> // based on the plan is expected</span> |
| <span class="source-line-no">359</span><span id="line-359"> verifyRegionOnPrimaryRS(numRegionsOnPrimaryRS);</span> |
| <span class="source-line-no">360</span><span id="line-360"></span> |
| <span class="source-line-no">361</span><span id="line-361"> // Verify all the online region server are updated with the assignment plan</span> |
| <span class="source-line-no">362</span><span id="line-362"> verifyRegionServerUpdated(plan);</span> |
| <span class="source-line-no">363</span><span id="line-363"> }</span> |
| <span class="source-line-no">364</span><span id="line-364"></span> |
| <span class="source-line-no">365</span><span id="line-365"> /**</span> |
| <span class="source-line-no">366</span><span id="line-366"> * Verify the meta has updated to the latest assignment plan</span> |
| <span class="source-line-no">367</span><span id="line-367"> * @param expectedPlan the region assignment plan</span> |
| <span class="source-line-no">368</span><span id="line-368"> * @throws IOException if an IO problem is encountered</span> |
| <span class="source-line-no">369</span><span id="line-369"> */</span> |
| <span class="source-line-no">370</span><span id="line-370"> private void verifyMETAUpdated(FavoredNodesPlan expectedPlan) throws IOException {</span> |
| <span class="source-line-no">371</span><span id="line-371"> FavoredNodesPlan planFromMETA = rp.getRegionAssignmentSnapshot().getExistingAssignmentPlan();</span> |
| <span class="source-line-no">372</span><span id="line-372"> assertTrue("The assignment plan is NOT consistent with the expected plan ",</span> |
| <span class="source-line-no">373</span><span id="line-373"> planFromMETA.equals(expectedPlan));</span> |
| <span class="source-line-no">374</span><span id="line-374"> }</span> |
| <span class="source-line-no">375</span><span id="line-375"></span> |
| <span class="source-line-no">376</span><span id="line-376"> /**</span> |
| <span class="source-line-no">377</span><span id="line-377"> * Verify the number of region movement is expected</span> |
| <span class="source-line-no">378</span><span id="line-378"> */</span> |
| <span class="source-line-no">379</span><span id="line-379"> private void verifyRegionMovementNum(int expected) throws InterruptedException, IOException {</span> |
| <span class="source-line-no">380</span><span id="line-380"> SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();</span> |
| <span class="source-line-no">381</span><span id="line-381"> HMaster m = cluster.getMaster();</span> |
| <span class="source-line-no">382</span><span id="line-382"> int lastRegionOpenedCount = m.getAssignmentManager().getNumRegionsOpened();</span> |
| <span class="source-line-no">383</span><span id="line-383"> // get the assignments start to execute</span> |
| <span class="source-line-no">384</span><span id="line-384"> m.balance();</span> |
| <span class="source-line-no">385</span><span id="line-385"></span> |
| <span class="source-line-no">386</span><span id="line-386"> int retry = 10;</span> |
| <span class="source-line-no">387</span><span id="line-387"> long sleep = 3000;</span> |
| <span class="source-line-no">388</span><span id="line-388"> int attempt = 0;</span> |
| <span class="source-line-no">389</span><span id="line-389"> int currentRegionOpened, regionMovement;</span> |
| <span class="source-line-no">390</span><span id="line-390"> do {</span> |
| <span class="source-line-no">391</span><span id="line-391"> currentRegionOpened = m.getAssignmentManager().getNumRegionsOpened();</span> |
| <span class="source-line-no">392</span><span id="line-392"> regionMovement = currentRegionOpened - lastRegionOpenedCount;</span> |
| <span class="source-line-no">393</span><span id="line-393"> LOG.debug("There are " + regionMovement + "/" + expected + " regions moved after " + attempt</span> |
| <span class="source-line-no">394</span><span id="line-394"> + " attempts");</span> |
| <span class="source-line-no">395</span><span id="line-395"> Thread.sleep((++attempt) * sleep);</span> |
| <span class="source-line-no">396</span><span id="line-396"> } while (regionMovement != expected && attempt <= retry);</span> |
| <span class="source-line-no">397</span><span id="line-397"></span> |
| <span class="source-line-no">398</span><span id="line-398"> // update the lastRegionOpenedCount</span> |
| <span class="source-line-no">399</span><span id="line-399"> lastRegionOpenedCount = currentRegionOpened;</span> |
| <span class="source-line-no">400</span><span id="line-400"></span> |
| <span class="source-line-no">401</span><span id="line-401"> assertEquals("There are only " + regionMovement + " instead of " + expected</span> |
| <span class="source-line-no">402</span><span id="line-402"> + " region movement for " + attempt + " attempts", expected, regionMovement);</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"> /**</span> |
| <span class="source-line-no">406</span><span id="line-406"> * Verify the number of user regions is assigned to the primary region server based on the plan is</span> |
| <span class="source-line-no">407</span><span id="line-407"> * expected</span> |
| <span class="source-line-no">408</span><span id="line-408"> * @param expectedNum the expected number of assigned regions</span> |
| <span class="source-line-no">409</span><span id="line-409"> */</span> |
| <span class="source-line-no">410</span><span id="line-410"> private void verifyRegionOnPrimaryRS(int expectedNum) throws IOException {</span> |
| <span class="source-line-no">411</span><span id="line-411"> lastRegionOnPrimaryRSCount = getNumRegionisOnPrimaryRS();</span> |
| <span class="source-line-no">412</span><span id="line-412"> assertEquals(</span> |
| <span class="source-line-no">413</span><span id="line-413"> "Only " + expectedNum + " of user regions running " + "on the primary region server",</span> |
| <span class="source-line-no">414</span><span id="line-414"> expectedNum, lastRegionOnPrimaryRSCount);</span> |
| <span class="source-line-no">415</span><span id="line-415"> }</span> |
| <span class="source-line-no">416</span><span id="line-416"></span> |
| <span class="source-line-no">417</span><span id="line-417"> /**</span> |
| <span class="source-line-no">418</span><span id="line-418"> * Verify all the online region servers has been updated to the latest assignment plan</span> |
| <span class="source-line-no">419</span><span id="line-419"> */</span> |
| <span class="source-line-no">420</span><span id="line-420"> private void verifyRegionServerUpdated(FavoredNodesPlan plan) throws IOException {</span> |
| <span class="source-line-no">421</span><span id="line-421"> // Verify all region servers contain the correct favored nodes information</span> |
| <span class="source-line-no">422</span><span id="line-422"> SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();</span> |
| <span class="source-line-no">423</span><span id="line-423"> for (int i = 0; i < SLAVES; i++) {</span> |
| <span class="source-line-no">424</span><span id="line-424"> HRegionServer rs = cluster.getRegionServer(i);</span> |
| <span class="source-line-no">425</span><span id="line-425"> for (Region region : rs.getRegions(TableName.valueOf("testRegionAssignment"))) {</span> |
| <span class="source-line-no">426</span><span id="line-426"> InetSocketAddress[] favoredSocketAddress =</span> |
| <span class="source-line-no">427</span><span id="line-427"> rs.getFavoredNodesForRegion(region.getRegionInfo().getEncodedName());</span> |
| <span class="source-line-no">428</span><span id="line-428"> String regionName = region.getRegionInfo().getRegionNameAsString();</span> |
| <span class="source-line-no">429</span><span id="line-429"> List<ServerName> favoredServerList = plan.getAssignmentMap().get(regionName);</span> |
| <span class="source-line-no">430</span><span id="line-430"></span> |
| <span class="source-line-no">431</span><span id="line-431"> // All regions are supposed to have favored nodes,</span> |
| <span class="source-line-no">432</span><span id="line-432"> // except for hbase:meta and ROOT</span> |
| <span class="source-line-no">433</span><span id="line-433"> if (favoredServerList == null) {</span> |
| <span class="source-line-no">434</span><span id="line-434"> TableDescriptor desc = region.getTableDescriptor();</span> |
| <span class="source-line-no">435</span><span id="line-435"> // Verify they are ROOT and hbase:meta regions since no favored nodes</span> |
| <span class="source-line-no">436</span><span id="line-436"> assertNull(favoredSocketAddress);</span> |
| <span class="source-line-no">437</span><span id="line-437"> assertTrue("User region " + region.getTableDescriptor().getTableName()</span> |
| <span class="source-line-no">438</span><span id="line-438"> + " should have favored nodes", desc.isMetaRegion());</span> |
| <span class="source-line-no">439</span><span id="line-439"> } else {</span> |
| <span class="source-line-no">440</span><span id="line-440"> // For user region, the favored nodes in the region server should be</span> |
| <span class="source-line-no">441</span><span id="line-441"> // identical to favored nodes in the assignmentPlan</span> |
| <span class="source-line-no">442</span><span id="line-442"> assertTrue(favoredSocketAddress.length == favoredServerList.size());</span> |
| <span class="source-line-no">443</span><span id="line-443"> assertTrue(favoredServerList.size() > 0);</span> |
| <span class="source-line-no">444</span><span id="line-444"> for (int j = 0; j < favoredServerList.size(); j++) {</span> |
| <span class="source-line-no">445</span><span id="line-445"> InetSocketAddress addrFromRS = favoredSocketAddress[j];</span> |
| <span class="source-line-no">446</span><span id="line-446"> InetSocketAddress addrFromPlan = InetSocketAddress.createUnresolved(</span> |
| <span class="source-line-no">447</span><span id="line-447"> favoredServerList.get(j).getHostname(), favoredServerList.get(j).getPort());</span> |
| <span class="source-line-no">448</span><span id="line-448"></span> |
| <span class="source-line-no">449</span><span id="line-449"> assertNotNull(addrFromRS);</span> |
| <span class="source-line-no">450</span><span id="line-450"> assertNotNull(addrFromPlan);</span> |
| <span class="source-line-no">451</span><span id="line-451"> assertTrue(</span> |
| <span class="source-line-no">452</span><span id="line-452"> "Region server " + rs.getServerName().getAddress() + " has the " + positions[j]</span> |
| <span class="source-line-no">453</span><span id="line-453"> + " for region " + region.getRegionInfo().getRegionNameAsString() + " is "</span> |
| <span class="source-line-no">454</span><span id="line-454"> + addrFromRS + " which is inconsistent with the plan " + addrFromPlan,</span> |
| <span class="source-line-no">455</span><span id="line-455"> addrFromRS.equals(addrFromPlan));</span> |
| <span class="source-line-no">456</span><span id="line-456"> }</span> |
| <span class="source-line-no">457</span><span id="line-457"> }</span> |
| <span class="source-line-no">458</span><span id="line-458"> }</span> |
| <span class="source-line-no">459</span><span id="line-459"> }</span> |
| <span class="source-line-no">460</span><span id="line-460"> }</span> |
| <span class="source-line-no">461</span><span id="line-461"></span> |
| <span class="source-line-no">462</span><span id="line-462"> /**</span> |
| <span class="source-line-no">463</span><span id="line-463"> * Check whether regions are assigned to servers consistent with the explicit hints that are</span> |
| <span class="source-line-no">464</span><span id="line-464"> * persisted in the hbase:meta table. Also keep track of the number of the regions are assigned to</span> |
| <span class="source-line-no">465</span><span id="line-465"> * the primary region server.</span> |
| <span class="source-line-no">466</span><span id="line-466"> * @return the number of regions are assigned to the primary region server</span> |
| <span class="source-line-no">467</span><span id="line-467"> */</span> |
| <span class="source-line-no">468</span><span id="line-468"> private int getNumRegionisOnPrimaryRS() throws IOException {</span> |
| <span class="source-line-no">469</span><span id="line-469"> final AtomicInteger regionOnPrimaryNum = new AtomicInteger(0);</span> |
| <span class="source-line-no">470</span><span id="line-470"> final AtomicInteger totalRegionNum = new AtomicInteger(0);</span> |
| <span class="source-line-no">471</span><span id="line-471"> LOG.info("The start of region placement verification");</span> |
| <span class="source-line-no">472</span><span id="line-472"> ClientMetaTableAccessor.Visitor visitor = new ClientMetaTableAccessor.Visitor() {</span> |
| <span class="source-line-no">473</span><span id="line-473"> @Override</span> |
| <span class="source-line-no">474</span><span id="line-474"> public boolean visit(Result result) throws IOException {</span> |
| <span class="source-line-no">475</span><span id="line-475"> try {</span> |
| <span class="source-line-no">476</span><span id="line-476"> @SuppressWarnings("deprecation")</span> |
| <span class="source-line-no">477</span><span id="line-477"> RegionInfo info = CatalogFamilyFormat.getRegionInfo(result);</span> |
| <span class="source-line-no">478</span><span id="line-478"> if (</span> |
| <span class="source-line-no">479</span><span id="line-479"> info.getTable().getNamespaceAsString()</span> |
| <span class="source-line-no">480</span><span id="line-480"> .equals(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR)</span> |
| <span class="source-line-no">481</span><span id="line-481"> ) {</span> |
| <span class="source-line-no">482</span><span id="line-482"> return true;</span> |
| <span class="source-line-no">483</span><span id="line-483"> }</span> |
| <span class="source-line-no">484</span><span id="line-484"> byte[] server = result.getValue(HConstants.CATALOG_FAMILY, HConstants.SERVER_QUALIFIER);</span> |
| <span class="source-line-no">485</span><span id="line-485"> byte[] favoredNodes = result.getValue(HConstants.CATALOG_FAMILY,</span> |
| <span class="source-line-no">486</span><span id="line-486"> FavoredNodeAssignmentHelper.FAVOREDNODES_QUALIFIER);</span> |
| <span class="source-line-no">487</span><span id="line-487"> // Add the favored nodes into assignment plan</span> |
| <span class="source-line-no">488</span><span id="line-488"> ServerName[] favoredServerList =</span> |
| <span class="source-line-no">489</span><span id="line-489"> FavoredNodeAssignmentHelper.getFavoredNodesList(favoredNodes);</span> |
| <span class="source-line-no">490</span><span id="line-490"> favoredNodesAssignmentPlan.put(info, favoredServerList);</span> |
| <span class="source-line-no">491</span><span id="line-491"></span> |
| <span class="source-line-no">492</span><span id="line-492"> Position[] positions = Position.values();</span> |
| <span class="source-line-no">493</span><span id="line-493"> if (info != null) {</span> |
| <span class="source-line-no">494</span><span id="line-494"> totalRegionNum.incrementAndGet();</span> |
| <span class="source-line-no">495</span><span id="line-495"> if (server != null) {</span> |
| <span class="source-line-no">496</span><span id="line-496"> ServerName serverName = ServerName.valueOf(Bytes.toString(server), -1);</span> |
| <span class="source-line-no">497</span><span id="line-497"> if (favoredNodes != null) {</span> |
| <span class="source-line-no">498</span><span id="line-498"> String placement = "[NOT FAVORED NODE]";</span> |
| <span class="source-line-no">499</span><span id="line-499"> for (int i = 0; i < favoredServerList.length; i++) {</span> |
| <span class="source-line-no">500</span><span id="line-500"> if (favoredServerList[i].equals(serverName)) {</span> |
| <span class="source-line-no">501</span><span id="line-501"> placement = positions[i].toString();</span> |
| <span class="source-line-no">502</span><span id="line-502"> if (i == Position.PRIMARY.ordinal()) {</span> |
| <span class="source-line-no">503</span><span id="line-503"> regionOnPrimaryNum.incrementAndGet();</span> |
| <span class="source-line-no">504</span><span id="line-504"> }</span> |
| <span class="source-line-no">505</span><span id="line-505"> break;</span> |
| <span class="source-line-no">506</span><span id="line-506"> }</span> |
| <span class="source-line-no">507</span><span id="line-507"> }</span> |
| <span class="source-line-no">508</span><span id="line-508"> LOG.info(info.getRegionNameAsString() + " on " + serverName + " " + placement);</span> |
| <span class="source-line-no">509</span><span id="line-509"> } else {</span> |
| <span class="source-line-no">510</span><span id="line-510"> LOG.info(info.getRegionNameAsString() + " running on " + serverName</span> |
| <span class="source-line-no">511</span><span id="line-511"> + " but there is no favored region server");</span> |
| <span class="source-line-no">512</span><span id="line-512"> }</span> |
| <span class="source-line-no">513</span><span id="line-513"> } else {</span> |
| <span class="source-line-no">514</span><span id="line-514"> LOG.info(info.getRegionNameAsString() + " not assigned to any server");</span> |
| <span class="source-line-no">515</span><span id="line-515"> }</span> |
| <span class="source-line-no">516</span><span id="line-516"> }</span> |
| <span class="source-line-no">517</span><span id="line-517"> return true;</span> |
| <span class="source-line-no">518</span><span id="line-518"> } catch (RuntimeException e) {</span> |
| <span class="source-line-no">519</span><span id="line-519"> LOG.error("Result=" + result);</span> |
| <span class="source-line-no">520</span><span id="line-520"> throw e;</span> |
| <span class="source-line-no">521</span><span id="line-521"> }</span> |
| <span class="source-line-no">522</span><span id="line-522"> }</span> |
| <span class="source-line-no">523</span><span id="line-523"> };</span> |
| <span class="source-line-no">524</span><span id="line-524"> MetaTableAccessor.fullScanRegions(CONNECTION, visitor);</span> |
| <span class="source-line-no">525</span><span id="line-525"> LOG.info("There are " + regionOnPrimaryNum.intValue() + " out of " + totalRegionNum.intValue()</span> |
| <span class="source-line-no">526</span><span id="line-526"> + " regions running on the primary" + " region servers");</span> |
| <span class="source-line-no">527</span><span id="line-527"> return regionOnPrimaryNum.intValue();</span> |
| <span class="source-line-no">528</span><span id="line-528"> }</span> |
| <span class="source-line-no">529</span><span id="line-529"></span> |
| <span class="source-line-no">530</span><span id="line-530"> /**</span> |
| <span class="source-line-no">531</span><span id="line-531"> * Create a table with specified table name and region number.</span> |
| <span class="source-line-no">532</span><span id="line-532"> * @param tableName the name of the table to be created</span> |
| <span class="source-line-no">533</span><span id="line-533"> * @param regionNum number of regions to create</span> |
| <span class="source-line-no">534</span><span id="line-534"> */</span> |
| <span class="source-line-no">535</span><span id="line-535"> private static void createTable(TableName tableName, int regionNum) throws IOException {</span> |
| <span class="source-line-no">536</span><span id="line-536"> int expectedRegions = regionNum;</span> |
| <span class="source-line-no">537</span><span id="line-537"> byte[][] splitKeys = new byte[expectedRegions - 1][];</span> |
| <span class="source-line-no">538</span><span id="line-538"> for (int i = 1; i < expectedRegions; i++) {</span> |
| <span class="source-line-no">539</span><span id="line-539"> byte splitKey = (byte) i;</span> |
| <span class="source-line-no">540</span><span id="line-540"> splitKeys[i - 1] = new byte[] { splitKey, splitKey, splitKey };</span> |
| <span class="source-line-no">541</span><span id="line-541"> }</span> |
| <span class="source-line-no">542</span><span id="line-542"></span> |
| <span class="source-line-no">543</span><span id="line-543"> TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName)</span> |
| <span class="source-line-no">544</span><span id="line-544"> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(HConstants.CATALOG_FAMILY)).build();</span> |
| <span class="source-line-no">545</span><span id="line-545"> admin.createTable(tableDescriptor, splitKeys);</span> |
| <span class="source-line-no">546</span><span id="line-546"></span> |
| <span class="source-line-no">547</span><span id="line-547"> try (RegionLocator r = CONNECTION.getRegionLocator(tableName)) {</span> |
| <span class="source-line-no">548</span><span id="line-548"> List<HRegionLocation> regions = r.getAllRegionLocations();</span> |
| <span class="source-line-no">549</span><span id="line-549"> assertEquals(</span> |
| <span class="source-line-no">550</span><span id="line-550"> "Tried to create " + expectedRegions + " regions " + "but only found " + regions.size(),</span> |
| <span class="source-line-no">551</span><span id="line-551"> expectedRegions, regions.size());</span> |
| <span class="source-line-no">552</span><span id="line-552"> }</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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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
