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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.assertFalse;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertNotNull;</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.mockito.ArgumentMatchers.any;</span> |
| <span class="source-line-no">025</span><span id="line-25">import static org.mockito.Mockito.when;</span> |
| <span class="source-line-no">026</span><span id="line-26"></span> |
| <span class="source-line-no">027</span><span id="line-27">import java.io.IOException;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.io.InterruptedIOException;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.ArrayList;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.List;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.concurrent.Semaphore;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.monitoring.MonitoredTask;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.monitoring.TaskGroup;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.testclassification.MasterTests;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.util.MockServer;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.zookeeper.ClusterStatusTracker;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.zookeeper.ZKListener;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.zookeeper.ZKUtil;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.zookeeper.ZKWatcher;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.zookeeper.ZNodePaths;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.zookeeper.KeeperException;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.junit.AfterClass;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.junit.ClassRule;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.junit.Test;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.mockito.Mockito;</span> |
| <span class="source-line-no">055</span><span id="line-55">import org.slf4j.Logger;</span> |
| <span class="source-line-no">056</span><span id="line-56">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58">/**</span> |
| <span class="source-line-no">059</span><span id="line-59"> * Test the {@link ActiveMasterManager}.</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61">@Category({ MasterTests.class, MediumTests.class })</span> |
| <span class="source-line-no">062</span><span id="line-62">public class TestActiveMasterManager {</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> @ClassRule</span> |
| <span class="source-line-no">065</span><span id="line-65"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">066</span><span id="line-66"> HBaseClassTestRule.forClass(TestActiveMasterManager.class);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> private final static Logger LOG = LoggerFactory.getLogger(TestActiveMasterManager.class);</span> |
| <span class="source-line-no">069</span><span id="line-69"> private final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> @BeforeClass</span> |
| <span class="source-line-no">072</span><span id="line-72"> public static void setUpBeforeClass() throws Exception {</span> |
| <span class="source-line-no">073</span><span id="line-73"> TEST_UTIL.startMiniZKCluster();</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> @AfterClass</span> |
| <span class="source-line-no">077</span><span id="line-77"> public static void tearDownAfterClass() throws Exception {</span> |
| <span class="source-line-no">078</span><span id="line-78"> TEST_UTIL.shutdownMiniZKCluster();</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> @Test</span> |
| <span class="source-line-no">082</span><span id="line-82"> public void testRestartMaster() throws IOException, KeeperException {</span> |
| <span class="source-line-no">083</span><span id="line-83"> try (ZKWatcher zk =</span> |
| <span class="source-line-no">084</span><span id="line-84"> new ZKWatcher(TEST_UTIL.getConfiguration(), "testActiveMasterManagerFromZK", null, true)) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> try {</span> |
| <span class="source-line-no">086</span><span id="line-86"> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">087</span><span id="line-87"> ZKUtil.deleteNode(zk, zk.getZNodePaths().clusterStateZNode);</span> |
| <span class="source-line-no">088</span><span id="line-88"> } catch (KeeperException.NoNodeException nne) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> // Create the master node with a dummy address</span> |
| <span class="source-line-no">092</span><span id="line-92"> ServerName master = ServerName.valueOf("localhost", 1, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">093</span><span id="line-93"> // Should not have a master yet</span> |
| <span class="source-line-no">094</span><span id="line-94"> DummyMaster dummyMaster = new DummyMaster(zk, master);</span> |
| <span class="source-line-no">095</span><span id="line-95"> ClusterStatusTracker clusterStatusTracker = dummyMaster.getClusterStatusTracker();</span> |
| <span class="source-line-no">096</span><span id="line-96"> ActiveMasterManager activeMasterManager = dummyMaster.getActiveMasterManager();</span> |
| <span class="source-line-no">097</span><span id="line-97"> assertFalse(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">098</span><span id="line-98"> assertFalse(activeMasterManager.getActiveMasterServerName().isPresent());</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> // First test becoming the active master uninterrupted</span> |
| <span class="source-line-no">101</span><span id="line-101"> TaskGroup status = mockTaskGroup();</span> |
| <span class="source-line-no">102</span><span id="line-102"> clusterStatusTracker.setClusterUp();</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> activeMasterManager.blockUntilBecomingActiveMaster(100, status);</span> |
| <span class="source-line-no">105</span><span id="line-105"> assertTrue(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">106</span><span id="line-106"> assertMaster(zk, master);</span> |
| <span class="source-line-no">107</span><span id="line-107"> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> // Now pretend master restart</span> |
| <span class="source-line-no">110</span><span id="line-110"> DummyMaster secondDummyMaster = new DummyMaster(zk, master);</span> |
| <span class="source-line-no">111</span><span id="line-111"> ActiveMasterManager secondActiveMasterManager = secondDummyMaster.getActiveMasterManager();</span> |
| <span class="source-line-no">112</span><span id="line-112"> assertFalse(secondActiveMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">113</span><span id="line-113"> activeMasterManager.blockUntilBecomingActiveMaster(100, status);</span> |
| <span class="source-line-no">114</span><span id="line-114"> assertTrue(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">115</span><span id="line-115"> assertMaster(zk, master);</span> |
| <span class="source-line-no">116</span><span id="line-116"> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">117</span><span id="line-117"> assertMaster(zk, secondActiveMasterManager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"> }</span> |
| <span class="source-line-no">120</span><span id="line-120"></span> |
| <span class="source-line-no">121</span><span id="line-121"> /**</span> |
| <span class="source-line-no">122</span><span id="line-122"> * Unit tests that uses ZooKeeper but does not use the master-side methods but rather acts</span> |
| <span class="source-line-no">123</span><span id="line-123"> * directly on ZK.</span> |
| <span class="source-line-no">124</span><span id="line-124"> */</span> |
| <span class="source-line-no">125</span><span id="line-125"> @Test</span> |
| <span class="source-line-no">126</span><span id="line-126"> public void testActiveMasterManagerFromZK() throws Exception {</span> |
| <span class="source-line-no">127</span><span id="line-127"> try (ZKWatcher zk =</span> |
| <span class="source-line-no">128</span><span id="line-128"> new ZKWatcher(TEST_UTIL.getConfiguration(), "testActiveMasterManagerFromZK", null, true)) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> try {</span> |
| <span class="source-line-no">130</span><span id="line-130"> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">131</span><span id="line-131"> ZKUtil.deleteNode(zk, zk.getZNodePaths().clusterStateZNode);</span> |
| <span class="source-line-no">132</span><span id="line-132"> } catch (KeeperException.NoNodeException nne) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> }</span> |
| <span class="source-line-no">134</span><span id="line-134"></span> |
| <span class="source-line-no">135</span><span id="line-135"> // Create the master node with a dummy address</span> |
| <span class="source-line-no">136</span><span id="line-136"> ServerName firstMasterAddress =</span> |
| <span class="source-line-no">137</span><span id="line-137"> ServerName.valueOf("localhost", 1, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">138</span><span id="line-138"> ServerName secondMasterAddress =</span> |
| <span class="source-line-no">139</span><span id="line-139"> ServerName.valueOf("localhost", 2, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">140</span><span id="line-140"></span> |
| <span class="source-line-no">141</span><span id="line-141"> // Should not have a master yet</span> |
| <span class="source-line-no">142</span><span id="line-142"> DummyMaster ms1 = new DummyMaster(zk, firstMasterAddress);</span> |
| <span class="source-line-no">143</span><span id="line-143"> ActiveMasterManager activeMasterManager = ms1.getActiveMasterManager();</span> |
| <span class="source-line-no">144</span><span id="line-144"> assertFalse(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">145</span><span id="line-145"> assertFalse(activeMasterManager.getActiveMasterServerName().isPresent());</span> |
| <span class="source-line-no">146</span><span id="line-146"></span> |
| <span class="source-line-no">147</span><span id="line-147"> // First test becoming the active master uninterrupted</span> |
| <span class="source-line-no">148</span><span id="line-148"> ClusterStatusTracker clusterStatusTracker = ms1.getClusterStatusTracker();</span> |
| <span class="source-line-no">149</span><span id="line-149"> clusterStatusTracker.setClusterUp();</span> |
| <span class="source-line-no">150</span><span id="line-150"></span> |
| <span class="source-line-no">151</span><span id="line-151"> activeMasterManager.blockUntilBecomingActiveMaster(100, mockTaskGroup());</span> |
| <span class="source-line-no">152</span><span id="line-152"> assertTrue(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">153</span><span id="line-153"> assertMaster(zk, firstMasterAddress);</span> |
| <span class="source-line-no">154</span><span id="line-154"> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> // New manager will now try to become the active master in another thread</span> |
| <span class="source-line-no">157</span><span id="line-157"> WaitToBeMasterThread t = new WaitToBeMasterThread(zk, secondMasterAddress);</span> |
| <span class="source-line-no">158</span><span id="line-158"> t.start();</span> |
| <span class="source-line-no">159</span><span id="line-159"> // Wait for this guy to figure out there is another active master</span> |
| <span class="source-line-no">160</span><span id="line-160"> // Wait for 1 second at most</span> |
| <span class="source-line-no">161</span><span id="line-161"> int sleeps = 0;</span> |
| <span class="source-line-no">162</span><span id="line-162"> while (!t.manager.clusterHasActiveMaster.get() && sleeps < 100) {</span> |
| <span class="source-line-no">163</span><span id="line-163"> Thread.sleep(10);</span> |
| <span class="source-line-no">164</span><span id="line-164"> sleeps++;</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"></span> |
| <span class="source-line-no">167</span><span id="line-167"> // Both should see that there is an active master</span> |
| <span class="source-line-no">168</span><span id="line-168"> assertTrue(activeMasterManager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">169</span><span id="line-169"> assertTrue(t.manager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">170</span><span id="line-170"> // But secondary one should not be the active master</span> |
| <span class="source-line-no">171</span><span id="line-171"> assertFalse(t.isActiveMaster);</span> |
| <span class="source-line-no">172</span><span id="line-172"> // Verify the active master ServerName is populated in standby master.</span> |
| <span class="source-line-no">173</span><span id="line-173"> assertEquals(firstMasterAddress, t.manager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> // Close the first server and delete it's master node</span> |
| <span class="source-line-no">176</span><span id="line-176"> ms1.stop("stopping first server");</span> |
| <span class="source-line-no">177</span><span id="line-177"></span> |
| <span class="source-line-no">178</span><span id="line-178"> // Use a listener to capture when the node is actually deleted</span> |
| <span class="source-line-no">179</span><span id="line-179"> NodeDeletionListener listener =</span> |
| <span class="source-line-no">180</span><span id="line-180"> new NodeDeletionListener(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">181</span><span id="line-181"> zk.registerListener(listener);</span> |
| <span class="source-line-no">182</span><span id="line-182"></span> |
| <span class="source-line-no">183</span><span id="line-183"> LOG.info("Deleting master node");</span> |
| <span class="source-line-no">184</span><span id="line-184"> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">185</span><span id="line-185"></span> |
| <span class="source-line-no">186</span><span id="line-186"> // Wait for the node to be deleted</span> |
| <span class="source-line-no">187</span><span id="line-187"> LOG.info("Waiting for active master manager to be notified");</span> |
| <span class="source-line-no">188</span><span id="line-188"> listener.waitForDeletion();</span> |
| <span class="source-line-no">189</span><span id="line-189"> LOG.info("Master node deleted");</span> |
| <span class="source-line-no">190</span><span id="line-190"></span> |
| <span class="source-line-no">191</span><span id="line-191"> // Now we expect the secondary manager to have and be the active master</span> |
| <span class="source-line-no">192</span><span id="line-192"> // Wait for 1 second at most</span> |
| <span class="source-line-no">193</span><span id="line-193"> sleeps = 0;</span> |
| <span class="source-line-no">194</span><span id="line-194"> while (!t.isActiveMaster && sleeps < 100) {</span> |
| <span class="source-line-no">195</span><span id="line-195"> Thread.sleep(10);</span> |
| <span class="source-line-no">196</span><span id="line-196"> sleeps++;</span> |
| <span class="source-line-no">197</span><span id="line-197"> }</span> |
| <span class="source-line-no">198</span><span id="line-198"> LOG.debug("Slept " + sleeps + " times");</span> |
| <span class="source-line-no">199</span><span id="line-199"></span> |
| <span class="source-line-no">200</span><span id="line-200"> assertTrue(t.manager.clusterHasActiveMaster.get());</span> |
| <span class="source-line-no">201</span><span id="line-201"> assertTrue(t.isActiveMaster);</span> |
| <span class="source-line-no">202</span><span id="line-202"> assertEquals(secondMasterAddress, t.manager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">203</span><span id="line-203"></span> |
| <span class="source-line-no">204</span><span id="line-204"> LOG.info("Deleting master node");</span> |
| <span class="source-line-no">205</span><span id="line-205"></span> |
| <span class="source-line-no">206</span><span id="line-206"> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">207</span><span id="line-207"> }</span> |
| <span class="source-line-no">208</span><span id="line-208"> }</span> |
| <span class="source-line-no">209</span><span id="line-209"></span> |
| <span class="source-line-no">210</span><span id="line-210"> @Test</span> |
| <span class="source-line-no">211</span><span id="line-211"> public void testBackupMasterUpdates() throws Exception {</span> |
| <span class="source-line-no">212</span><span id="line-212"> Configuration conf = TEST_UTIL.getConfiguration();</span> |
| <span class="source-line-no">213</span><span id="line-213"> try (ZKWatcher zk = new ZKWatcher(conf, "testBackupMasterUpdates", null, true)) {</span> |
| <span class="source-line-no">214</span><span id="line-214"> ServerName sn1 = ServerName.valueOf("localhost", 1, -1);</span> |
| <span class="source-line-no">215</span><span id="line-215"> DummyMaster master1 = new DummyMaster(zk, sn1);</span> |
| <span class="source-line-no">216</span><span id="line-216"> ActiveMasterManager activeMasterManager = master1.getActiveMasterManager();</span> |
| <span class="source-line-no">217</span><span id="line-217"> activeMasterManager.blockUntilBecomingActiveMaster(100, mockTaskGroup());</span> |
| <span class="source-line-no">218</span><span id="line-218"> assertEquals(sn1, activeMasterManager.getActiveMasterServerName().get());</span> |
| <span class="source-line-no">219</span><span id="line-219"> assertEquals(0, activeMasterManager.getBackupMasters().size());</span> |
| <span class="source-line-no">220</span><span id="line-220"> // Add backup masters</span> |
| <span class="source-line-no">221</span><span id="line-221"> List<String> backupZNodes = new ArrayList<>();</span> |
| <span class="source-line-no">222</span><span id="line-222"> for (int i = 1; i <= 10; i++) {</span> |
| <span class="source-line-no">223</span><span id="line-223"> ServerName backupSn = ServerName.valueOf("localhost", 1000 + i, -1);</span> |
| <span class="source-line-no">224</span><span id="line-224"> String backupZn =</span> |
| <span class="source-line-no">225</span><span id="line-225"> ZNodePaths.joinZNode(zk.getZNodePaths().backupMasterAddressesZNode, backupSn.toString());</span> |
| <span class="source-line-no">226</span><span id="line-226"> backupZNodes.add(backupZn);</span> |
| <span class="source-line-no">227</span><span id="line-227"> MasterAddressTracker.setMasterAddress(zk, backupZn, backupSn, 1234);</span> |
| <span class="source-line-no">228</span><span id="line-228"> TEST_UTIL.waitFor(10000,</span> |
| <span class="source-line-no">229</span><span id="line-229"> () -> activeMasterManager.getBackupMasters().size() == backupZNodes.size());</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> // Remove backup masters</span> |
| <span class="source-line-no">232</span><span id="line-232"> int numBackups = backupZNodes.size();</span> |
| <span class="source-line-no">233</span><span id="line-233"> for (String backupZNode : backupZNodes) {</span> |
| <span class="source-line-no">234</span><span id="line-234"> ZKUtil.deleteNode(zk, backupZNode);</span> |
| <span class="source-line-no">235</span><span id="line-235"> final int currentBackups = --numBackups;</span> |
| <span class="source-line-no">236</span><span id="line-236"> TEST_UTIL.waitFor(10000,</span> |
| <span class="source-line-no">237</span><span id="line-237"> () -> activeMasterManager.getBackupMasters().size() == currentBackups);</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"> }</span> |
| <span class="source-line-no">241</span><span id="line-241"></span> |
| <span class="source-line-no">242</span><span id="line-242"> /**</span> |
| <span class="source-line-no">243</span><span id="line-243"> * Assert there is an active master and that it has the specified address.</span> |
| <span class="source-line-no">244</span><span id="line-244"> * @param zk single Zookeeper watcher</span> |
| <span class="source-line-no">245</span><span id="line-245"> * @param expectedAddress the expected address of the master</span> |
| <span class="source-line-no">246</span><span id="line-246"> * @throws KeeperException unexpected Zookeeper exception</span> |
| <span class="source-line-no">247</span><span id="line-247"> * @throws IOException if an IO problem is encountered</span> |
| <span class="source-line-no">248</span><span id="line-248"> */</span> |
| <span class="source-line-no">249</span><span id="line-249"> private void assertMaster(ZKWatcher zk, ServerName expectedAddress)</span> |
| <span class="source-line-no">250</span><span id="line-250"> throws KeeperException, IOException {</span> |
| <span class="source-line-no">251</span><span id="line-251"> ServerName readAddress = MasterAddressTracker.getMasterAddress(zk);</span> |
| <span class="source-line-no">252</span><span id="line-252"> assertNotNull(readAddress);</span> |
| <span class="source-line-no">253</span><span id="line-253"> assertEquals(expectedAddress, readAddress);</span> |
| <span class="source-line-no">254</span><span id="line-254"> }</span> |
| <span class="source-line-no">255</span><span id="line-255"></span> |
| <span class="source-line-no">256</span><span id="line-256"> public static class WaitToBeMasterThread extends Thread {</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> ActiveMasterManager manager;</span> |
| <span class="source-line-no">259</span><span id="line-259"> DummyMaster dummyMaster;</span> |
| <span class="source-line-no">260</span><span id="line-260"> boolean isActiveMaster;</span> |
| <span class="source-line-no">261</span><span id="line-261"></span> |
| <span class="source-line-no">262</span><span id="line-262"> public WaitToBeMasterThread(ZKWatcher zk, ServerName address) throws InterruptedIOException {</span> |
| <span class="source-line-no">263</span><span id="line-263"> this.dummyMaster = new DummyMaster(zk, address);</span> |
| <span class="source-line-no">264</span><span id="line-264"> this.manager = this.dummyMaster.getActiveMasterManager();</span> |
| <span class="source-line-no">265</span><span id="line-265"> isActiveMaster = false;</span> |
| <span class="source-line-no">266</span><span id="line-266"> }</span> |
| <span class="source-line-no">267</span><span id="line-267"></span> |
| <span class="source-line-no">268</span><span id="line-268"> @Override</span> |
| <span class="source-line-no">269</span><span id="line-269"> public void run() {</span> |
| <span class="source-line-no">270</span><span id="line-270"> manager.blockUntilBecomingActiveMaster(100, mockTaskGroup());</span> |
| <span class="source-line-no">271</span><span id="line-271"> LOG.info("Second master has become the active master!");</span> |
| <span class="source-line-no">272</span><span id="line-272"> isActiveMaster = true;</span> |
| <span class="source-line-no">273</span><span id="line-273"> }</span> |
| <span class="source-line-no">274</span><span id="line-274"> }</span> |
| <span class="source-line-no">275</span><span id="line-275"></span> |
| <span class="source-line-no">276</span><span id="line-276"> private static TaskGroup mockTaskGroup() {</span> |
| <span class="source-line-no">277</span><span id="line-277"> TaskGroup taskGroup = Mockito.mock(TaskGroup.class);</span> |
| <span class="source-line-no">278</span><span id="line-278"> MonitoredTask task = Mockito.mock(MonitoredTask.class);</span> |
| <span class="source-line-no">279</span><span id="line-279"> when(taskGroup.addTask(any())).thenReturn(task);</span> |
| <span class="source-line-no">280</span><span id="line-280"> return taskGroup;</span> |
| <span class="source-line-no">281</span><span id="line-281"> }</span> |
| <span class="source-line-no">282</span><span id="line-282"></span> |
| <span class="source-line-no">283</span><span id="line-283"> public static class NodeDeletionListener extends ZKListener {</span> |
| <span class="source-line-no">284</span><span id="line-284"> private static final Logger LOG = LoggerFactory.getLogger(NodeDeletionListener.class);</span> |
| <span class="source-line-no">285</span><span id="line-285"></span> |
| <span class="source-line-no">286</span><span id="line-286"> private Semaphore lock;</span> |
| <span class="source-line-no">287</span><span id="line-287"> private String node;</span> |
| <span class="source-line-no">288</span><span id="line-288"></span> |
| <span class="source-line-no">289</span><span id="line-289"> public NodeDeletionListener(ZKWatcher watcher, String node) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> super(watcher);</span> |
| <span class="source-line-no">291</span><span id="line-291"> lock = new Semaphore(0);</span> |
| <span class="source-line-no">292</span><span id="line-292"> this.node = node;</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"> @Override</span> |
| <span class="source-line-no">296</span><span id="line-296"> public void nodeDeleted(String path) {</span> |
| <span class="source-line-no">297</span><span id="line-297"> if (path.equals(node)) {</span> |
| <span class="source-line-no">298</span><span id="line-298"> LOG.debug("nodeDeleted(" + path + ")");</span> |
| <span class="source-line-no">299</span><span id="line-299"> lock.release();</span> |
| <span class="source-line-no">300</span><span id="line-300"> }</span> |
| <span class="source-line-no">301</span><span id="line-301"> }</span> |
| <span class="source-line-no">302</span><span id="line-302"></span> |
| <span class="source-line-no">303</span><span id="line-303"> public void waitForDeletion() throws InterruptedException {</span> |
| <span class="source-line-no">304</span><span id="line-304"> lock.acquire();</span> |
| <span class="source-line-no">305</span><span id="line-305"> }</span> |
| <span class="source-line-no">306</span><span id="line-306"> }</span> |
| <span class="source-line-no">307</span><span id="line-307"></span> |
| <span class="source-line-no">308</span><span id="line-308"> /**</span> |
| <span class="source-line-no">309</span><span id="line-309"> * Dummy Master Implementation.</span> |
| <span class="source-line-no">310</span><span id="line-310"> */</span> |
| <span class="source-line-no">311</span><span id="line-311"> public static class DummyMaster extends MockServer {</span> |
| <span class="source-line-no">312</span><span id="line-312"> private ClusterStatusTracker clusterStatusTracker;</span> |
| <span class="source-line-no">313</span><span id="line-313"> private ActiveMasterManager activeMasterManager;</span> |
| <span class="source-line-no">314</span><span id="line-314"></span> |
| <span class="source-line-no">315</span><span id="line-315"> public DummyMaster(ZKWatcher zk, ServerName master) throws InterruptedIOException {</span> |
| <span class="source-line-no">316</span><span id="line-316"> this.clusterStatusTracker = new ClusterStatusTracker(zk, this);</span> |
| <span class="source-line-no">317</span><span id="line-317"> clusterStatusTracker.start();</span> |
| <span class="source-line-no">318</span><span id="line-318"></span> |
| <span class="source-line-no">319</span><span id="line-319"> this.activeMasterManager = new ActiveMasterManager(zk, master, this);</span> |
| <span class="source-line-no">320</span><span id="line-320"> zk.registerListener(activeMasterManager);</span> |
| <span class="source-line-no">321</span><span id="line-321"> }</span> |
| <span class="source-line-no">322</span><span id="line-322"></span> |
| <span class="source-line-no">323</span><span id="line-323"> public ClusterStatusTracker getClusterStatusTracker() {</span> |
| <span class="source-line-no">324</span><span id="line-324"> return clusterStatusTracker;</span> |
| <span class="source-line-no">325</span><span id="line-325"> }</span> |
| <span class="source-line-no">326</span><span id="line-326"></span> |
| <span class="source-line-no">327</span><span id="line-327"> public ActiveMasterManager getActiveMasterManager() {</span> |
| <span class="source-line-no">328</span><span id="line-328"> return activeMasterManager;</span> |
| <span class="source-line-no">329</span><span id="line-329"> }</span> |
| <span class="source-line-no">330</span><span id="line-330"> }</span> |
| <span class="source-line-no">331</span><span id="line-331">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
