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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.junit.Assert.assertEquals;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertFalse;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotNull;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertTrue;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span><a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.InterruptedIOException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.ArrayList;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.Semaphore;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.conf.Configuration;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HBaseTestingUtility;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ServerName;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.MockServer;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.zookeeper.ClusterStatusTracker;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.zookeeper.ZKListener;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.zookeeper.ZKUtil;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.zookeeper.KeeperException;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.junit.AfterClass;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.junit.BeforeClass;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.junit.ClassRule;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.junit.Test;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.junit.experimental.categories.Category;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.mockito.Mockito;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.slf4j.Logger;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.slf4j.LoggerFactory;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span>/**<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * Test the {@link ActiveMasterManager}.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>@Category({MasterTests.class, MediumTests.class})<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>public class TestActiveMasterManager {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> @ClassRule<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> HBaseClassTestRule.forClass(TestActiveMasterManager.class);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private final static Logger LOG = LoggerFactory.getLogger(TestActiveMasterManager.class);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> @BeforeClass<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> public static void setUpBeforeClass() throws Exception {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> TEST_UTIL.startMiniZKCluster();<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> @AfterClass<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> public static void tearDownAfterClass() throws Exception {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> TEST_UTIL.shutdownMiniZKCluster();<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> }<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> @Test public void testRestartMaster() throws IOException, KeeperException {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> try (ZKWatcher zk = new ZKWatcher(TEST_UTIL.getConfiguration(),<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> "testActiveMasterManagerFromZK", null, true)) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> try {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().clusterStateZNode);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> } catch (KeeperException.NoNodeException nne) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // Create the master node with a dummy address<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> ServerName master = ServerName.valueOf("localhost", 1, System.currentTimeMillis());<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> // Should not have a master yet<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> DummyMaster dummyMaster = new DummyMaster(zk, master);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> ClusterStatusTracker clusterStatusTracker =<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> dummyMaster.getClusterStatusTracker();<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> ActiveMasterManager activeMasterManager =<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> dummyMaster.getActiveMasterManager();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> assertFalse(activeMasterManager.clusterHasActiveMaster.get());<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> assertFalse(activeMasterManager.getActiveMasterServerName().isPresent());<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // First test becoming the active master uninterrupted<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> MonitoredTask status = Mockito.mock(MonitoredTask.class);<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> clusterStatusTracker.setClusterUp();<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> activeMasterManager.blockUntilBecomingActiveMaster(100, status);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> assertTrue(activeMasterManager.clusterHasActiveMaster.get());<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> assertMaster(zk, master);<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> // Now pretend master restart<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> DummyMaster secondDummyMaster = new DummyMaster(zk, master);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> ActiveMasterManager secondActiveMasterManager =<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> secondDummyMaster.getActiveMasterManager();<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> assertFalse(secondActiveMasterManager.clusterHasActiveMaster.get());<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> activeMasterManager.blockUntilBecomingActiveMaster(100, status);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> assertTrue(activeMasterManager.clusterHasActiveMaster.get());<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> assertMaster(zk, master);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> assertMaster(zk, secondActiveMasterManager.getActiveMasterServerName().get());<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> }<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> /**<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * Unit tests that uses ZooKeeper but does not use the master-side methods<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * but rather acts directly on ZK.<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * @throws Exception<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> @Test<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> public void testActiveMasterManagerFromZK() throws Exception {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> try (ZKWatcher zk = new ZKWatcher(TEST_UTIL.getConfiguration(),<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> "testActiveMasterManagerFromZK", null, true)) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> try {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().clusterStateZNode);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> } catch (KeeperException.NoNodeException nne) {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> // Create the master node with a dummy address<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> ServerName firstMasterAddress =<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> ServerName.valueOf("localhost", 1, System.currentTimeMillis());<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> ServerName secondMasterAddress =<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> ServerName.valueOf("localhost", 2, System.currentTimeMillis());<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> // Should not have a master yet<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> DummyMaster ms1 = new DummyMaster(zk, firstMasterAddress);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> ActiveMasterManager activeMasterManager =<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> ms1.getActiveMasterManager();<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> assertFalse(activeMasterManager.clusterHasActiveMaster.get());<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> assertFalse(activeMasterManager.getActiveMasterServerName().isPresent());<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> // First test becoming the active master uninterrupted<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> ClusterStatusTracker clusterStatusTracker =<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> ms1.getClusterStatusTracker();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> clusterStatusTracker.setClusterUp();<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> activeMasterManager.blockUntilBecomingActiveMaster(100,<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Mockito.mock(MonitoredTask.class));<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> assertTrue(activeMasterManager.clusterHasActiveMaster.get());<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> assertMaster(zk, firstMasterAddress);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> assertMaster(zk, activeMasterManager.getActiveMasterServerName().get());<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // New manager will now try to become the active master in another thread<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> WaitToBeMasterThread t = new WaitToBeMasterThread(zk, secondMasterAddress);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> t.start();<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // Wait for this guy to figure out there is another active master<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> // Wait for 1 second at most<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> int sleeps = 0;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> while (!t.manager.clusterHasActiveMaster.get() && sleeps < 100) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> Thread.sleep(10);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> sleeps++;<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // Both should see that there is an active master<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> assertTrue(activeMasterManager.clusterHasActiveMaster.get());<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> assertTrue(t.manager.clusterHasActiveMaster.get());<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // But secondary one should not be the active master<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> assertFalse(t.isActiveMaster);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // Verify the active master ServerName is populated in standby master.<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> assertEquals(firstMasterAddress, t.manager.getActiveMasterServerName().get());<a name="line.175"></a> |
| <span class="sourceLineNo">176</span><a name="line.176"></a> |
| <span class="sourceLineNo">177</span> // Close the first server and delete it's master node<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> ms1.stop("stopping first server");<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> // Use a listener to capture when the node is actually deleted<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> NodeDeletionListener listener = new NodeDeletionListener(zk,<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> zk.getZNodePaths().masterAddressZNode);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> zk.registerListener(listener);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span><a name="line.184"></a> |
| <span class="sourceLineNo">185</span> LOG.info("Deleting master node");<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> // Wait for the node to be deleted<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> LOG.info("Waiting for active master manager to be notified");<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> listener.waitForDeletion();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> LOG.info("Master node deleted");<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // Now we expect the secondary manager to have and be the active master<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> // Wait for 1 second at most<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> sleeps = 0;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> while (!t.isActiveMaster && sleeps < 100) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> Thread.sleep(10);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> sleeps++;<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> LOG.debug("Slept " + sleeps + " times");<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> assertTrue(t.manager.clusterHasActiveMaster.get());<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> assertTrue(t.isActiveMaster);<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> assertEquals(secondMasterAddress, t.manager.getActiveMasterServerName().get());<a name="line.204"></a> |
| <span class="sourceLineNo">205</span><a name="line.205"></a> |
| <span class="sourceLineNo">206</span> LOG.info("Deleting master node");<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> ZKUtil.deleteNode(zk, zk.getZNodePaths().masterAddressZNode);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> @Test<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> public void testBackupMasterUpdates() throws Exception {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> try (ZKWatcher zk = new ZKWatcher(conf, "testBackupMasterUpdates", null, true)) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> ServerName sn1 = ServerName.valueOf("localhost", 1, -1);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> DummyMaster master1 = new DummyMaster(zk, sn1);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> ActiveMasterManager activeMasterManager = master1.getActiveMasterManager();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> activeMasterManager.blockUntilBecomingActiveMaster(100,<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> Mockito.mock(MonitoredTask.class));<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> assertEquals(sn1, activeMasterManager.getActiveMasterServerName().get());<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> assertEquals(0, activeMasterManager.getBackupMasters().size());<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // Add backup masters<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> List<String> backupZNodes = new ArrayList<>();<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> for (int i = 1; i <= 10; i++) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> ServerName backupSn = ServerName.valueOf("localhost", 1000 + i, -1);<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> String backupZn = ZNodePaths.joinZNode(<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> zk.getZNodePaths().backupMasterAddressesZNode, backupSn.toString());<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> backupZNodes.add(backupZn);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> MasterAddressTracker.setMasterAddress(zk, backupZn, backupSn, 1234);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> TEST_UTIL.waitFor(10000,<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> () -> activeMasterManager.getBackupMasters().size() == backupZNodes.size());<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> // Remove backup masters<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> int numBackups = backupZNodes.size();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> for (String backupZNode: backupZNodes) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> ZKUtil.deleteNode(zk, backupZNode);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> final int currentBackups = --numBackups;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> TEST_UTIL.waitFor(10000,<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> () -> activeMasterManager.getBackupMasters().size() == currentBackups);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> }<a name="line.243"></a> |
| <span class="sourceLineNo">244</span><a name="line.244"></a> |
| <span class="sourceLineNo">245</span> /**<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> * Assert there is an active master and that it has the specified address.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> * @param zk single Zookeeper watcher<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> * @param expectedAddress the expected address of the master<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * @throws KeeperException unexpected Zookeeper exception<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * @throws IOException if an IO problem is encountered<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> */<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> private void assertMaster(ZKWatcher zk, ServerName expectedAddress) throws<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> KeeperException, IOException {<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> ServerName readAddress = MasterAddressTracker.getMasterAddress(zk);<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> assertNotNull(readAddress);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> assertEquals(expectedAddress, readAddress);<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> }<a name="line.257"></a> |
| <span class="sourceLineNo">258</span><a name="line.258"></a> |
| <span class="sourceLineNo">259</span> public static class WaitToBeMasterThread extends Thread {<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> ActiveMasterManager manager;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> DummyMaster dummyMaster;<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> boolean isActiveMaster;<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> public WaitToBeMasterThread(ZKWatcher zk, ServerName address) throws InterruptedIOException {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> this.dummyMaster = new DummyMaster(zk,address);<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> this.manager = this.dummyMaster.getActiveMasterManager();<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> isActiveMaster = false;<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<a name="line.269"></a> |
| <span class="sourceLineNo">270</span><a name="line.270"></a> |
| <span class="sourceLineNo">271</span> @Override<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> public void run() {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> manager.blockUntilBecomingActiveMaster(100,<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> Mockito.mock(MonitoredTask.class));<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> LOG.info("Second master has become the active master!");<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> isActiveMaster = true;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span><a name="line.279"></a> |
| <span class="sourceLineNo">280</span> public static class NodeDeletionListener extends ZKListener {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> private static final Logger LOG = LoggerFactory.getLogger(NodeDeletionListener.class);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span><a name="line.282"></a> |
| <span class="sourceLineNo">283</span> private Semaphore lock;<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> private String node;<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> public NodeDeletionListener(ZKWatcher watcher, String node) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> super(watcher);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> lock = new Semaphore(0);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> this.node = node;<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span><a name="line.291"></a> |
| <span class="sourceLineNo">292</span> @Override<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> public void nodeDeleted(String path) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> if(path.equals(node)) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> LOG.debug("nodeDeleted(" + path + ")");<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> lock.release();<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span><a name="line.299"></a> |
| <span class="sourceLineNo">300</span> public void waitForDeletion() throws InterruptedException {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> lock.acquire();<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span><a name="line.304"></a> |
| <span class="sourceLineNo">305</span> /**<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> * Dummy Master Implementation.<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> */<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> public static class DummyMaster extends MockServer {<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> private ClusterStatusTracker clusterStatusTracker;<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> private ActiveMasterManager activeMasterManager;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> public DummyMaster(ZKWatcher zk, ServerName master) throws InterruptedIOException {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> this.clusterStatusTracker = new ClusterStatusTracker(zk, this);<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> clusterStatusTracker.start();<a name="line.314"></a> |
| <span class="sourceLineNo">315</span><a name="line.315"></a> |
| <span class="sourceLineNo">316</span> this.activeMasterManager = new ActiveMasterManager(zk, master, this);<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> zk.registerListener(activeMasterManager);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> public ClusterStatusTracker getClusterStatusTracker() {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> return clusterStatusTracker;<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> }<a name="line.322"></a> |
| <span class="sourceLineNo">323</span><a name="line.323"></a> |
| <span class="sourceLineNo">324</span> public ActiveMasterManager getActiveMasterManager() {<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> return activeMasterManager;<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span>}<a name="line.328"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
