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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.assertNotEquals;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertTrue;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.conf.Configuration;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.ServerName;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.SingleProcessHBaseCluster;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.SingleProcessHBaseCluster.MiniHBaseClusterRegionServer;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.StartTestingClusterOption;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.Waiter;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.master.assignment.RegionStates;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.zookeeper.ZKUtil;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.zookeeper.KeeperException;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.junit.AfterClass;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.junit.BeforeClass;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.junit.ClassRule;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.junit.Test;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.junit.experimental.categories.Category;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.slf4j.Logger;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.slf4j.LoggerFactory;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span>/**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Tests handling of meta-carrying region server failover.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>@Category(MediumTests.class)<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>public class TestMetaShutdownHandler {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> private static final Logger LOG = LoggerFactory.getLogger(TestMetaShutdownHandler.class);<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> @ClassRule<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> HBaseClassTestRule.forClass(TestMetaShutdownHandler.class);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> final static Configuration conf = TEST_UTIL.getConfiguration();<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> @BeforeClass<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> public static void setUpBeforeClass() throws Exception {<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> StartTestingClusterOption option = StartTestingClusterOption.builder().numRegionServers(3)<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> .rsClass(MyRegionServer.class).numDataNodes(3).build();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> TEST_UTIL.startMiniCluster(option);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> @AfterClass<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> public static void tearDownAfterClass() throws Exception {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> TEST_UTIL.shutdownMiniCluster();<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> }<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> /**<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * This test will test the expire handling of a meta-carrying region server. After<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * HBaseMiniCluster is up, we will delete the ephemeral node of the meta-carrying region server,<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * which will trigger the expire of this region server on the master. On the other hand, we will<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * slow down the abort process on the region server so that it is still up during the master SSH.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * We will check that the master SSH is still successfully done.<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> */<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> @Test<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> public void testExpireMetaRegionServer() throws Exception {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> HMaster master = cluster.getMaster();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> RegionStates regionStates = master.getAssignmentManager().getRegionStates();<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> ServerName metaServerName =<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> regionStates.getRegionServerOfRegion(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> if (<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> master.getServerName().equals(metaServerName) || metaServerName == null<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> || !metaServerName.equals(cluster.getServerHoldingMeta())<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> ) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // Move meta off master<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> metaServerName =<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> cluster.getLiveRegionServerThreads().get(0).getRegionServer().getServerName();<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> master.move(RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> Bytes.toBytes(metaServerName.getServerName()));<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> TEST_UTIL.waitUntilNoRegionsInTransition(60000);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> metaServerName =<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> regionStates.getRegionServerOfRegion(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> RegionState metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper());<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> assertEquals("Wrong state for meta!", RegionState.State.OPEN, metaState.getState());<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> assertNotEquals("Meta is on master!", metaServerName, master.getServerName());<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> HRegionServer metaRegionServer = cluster.getRegionServer(metaServerName);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> // Delete the ephemeral node of the meta-carrying region server.<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> // This is trigger the expire of this region server on the master.<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> String rsEphemeralNodePath = ZNodePaths.joinZNode(master.getZooKeeper().getZNodePaths().rsZNode,<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> metaServerName.toString());<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> ZKUtil.deleteNode(master.getZooKeeper(), rsEphemeralNodePath);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> LOG.info("Deleted the znode for the RegionServer hosting hbase:meta; waiting on SSH");<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> // Wait for SSH to finish<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> final ServerManager serverManager = master.getServerManager();<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> final ServerName priorMetaServerName = metaServerName;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> TEST_UTIL.waitFor(60000, 100, () -> metaRegionServer.isStopped());<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> @Override<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> public boolean evaluate() throws Exception {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> return !serverManager.isServerOnline(priorMetaServerName)<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> && !serverManager.areDeadServersInProgress();<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> });<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> LOG.info("Past wait on RIT");<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> TEST_UTIL.waitUntilNoRegionsInTransition(60000);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> // Now, make sure meta is assigned<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> assertTrue("Meta should be assigned",<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> regionStates.isRegionOnline(RegionInfoBuilder.FIRST_META_REGIONINFO));<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> // Now, make sure meta is registered in zk<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper());<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> assertEquals("Meta should not be in transition", RegionState.State.OPEN, metaState.getState());<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> assertEquals("Meta should be assigned", metaState.getServerName(),<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> regionStates.getRegionServerOfRegion(RegionInfoBuilder.FIRST_META_REGIONINFO));<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> assertNotEquals("Meta should be assigned on a different server", metaState.getServerName(),<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> metaServerName);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span><a name="line.137"></a> |
| <span class="sourceLineNo">138</span> public static class MyRegionServer extends MiniHBaseClusterRegionServer {<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> public MyRegionServer(Configuration conf)<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> throws IOException, KeeperException, InterruptedException {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> super(conf);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> @Override<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> public void abort(String reason, Throwable cause) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> // sleep to slow down the region server abort<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> try {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> Thread.sleep(30 * 1000);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> } catch (InterruptedException e) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> return;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> }<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> super.abort(reason, cause);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span>}<a name="line.156"></a> |
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