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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.client;<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.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 java.util.List;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Set;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.stream.Collectors;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.stream.IntStream;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HConstants;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.ServerName;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.TableName;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.Waiter;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.coprocessor.Batch;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.ipc.RpcClient;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.testclassification.LargeTests;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.ManualEnvironmentEdge;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.junit.After;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.junit.AfterClass;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.junit.Assert;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.junit.BeforeClass;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.junit.ClassRule;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.junit.Rule;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.junit.Test;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.junit.experimental.categories.Category;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.junit.rules.TestName;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.slf4j.Logger;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.slf4j.LoggerFactory;<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.apache.hbase.thirdparty.io.netty.util.ResourceLeakDetector;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import org.apache.hbase.thirdparty.io.netty.util.ResourceLeakDetector.Level;<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MultiRowMutationService;<a name="line.64"></a>
<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MutateRowsResponse;<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>/**<a name="line.67"></a>
<span class="sourceLineNo">068</span> * This class is for testing {@link Connection}.<a name="line.68"></a>
<span class="sourceLineNo">069</span> */<a name="line.69"></a>
<span class="sourceLineNo">070</span>@Category({ LargeTests.class })<a name="line.70"></a>
<span class="sourceLineNo">071</span>public class TestConnection {<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span> @ClassRule<a name="line.73"></a>
<span class="sourceLineNo">074</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.74"></a>
<span class="sourceLineNo">075</span> HBaseClassTestRule.forClass(TestConnection.class);<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span> private static final Logger LOG = LoggerFactory.getLogger(TestConnection.class);<a name="line.77"></a>
<span class="sourceLineNo">078</span> private final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span> private static final byte[] FAM_NAM = Bytes.toBytes("f");<a name="line.80"></a>
<span class="sourceLineNo">081</span> private static final byte[] ROW = Bytes.toBytes("bbb");<a name="line.81"></a>
<span class="sourceLineNo">082</span> private static final int RPC_RETRY = 5;<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span> @Rule<a name="line.84"></a>
<span class="sourceLineNo">085</span> public TestName name = new TestName();<a name="line.85"></a>
<span class="sourceLineNo">086</span><a name="line.86"></a>
<span class="sourceLineNo">087</span> @BeforeClass<a name="line.87"></a>
<span class="sourceLineNo">088</span> public static void setUpBeforeClass() throws Exception {<a name="line.88"></a>
<span class="sourceLineNo">089</span> ResourceLeakDetector.setLevel(Level.PARANOID);<a name="line.89"></a>
<span class="sourceLineNo">090</span> TEST_UTIL.getConfiguration().setBoolean(HConstants.STATUS_PUBLISHED, true);<a name="line.90"></a>
<span class="sourceLineNo">091</span> // Up the handlers; this test needs more than usual.<a name="line.91"></a>
<span class="sourceLineNo">092</span> TEST_UTIL.getConfiguration().setInt(HConstants.REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT, 10);<a name="line.92"></a>
<span class="sourceLineNo">093</span> TEST_UTIL.getConfiguration().setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, RPC_RETRY);<a name="line.93"></a>
<span class="sourceLineNo">094</span> TEST_UTIL.getConfiguration().setInt(HConstants.REGION_SERVER_HANDLER_COUNT, 3);<a name="line.94"></a>
<span class="sourceLineNo">095</span> TEST_UTIL.startMiniCluster(2);<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span> }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span> @AfterClass<a name="line.99"></a>
<span class="sourceLineNo">100</span> public static void tearDownAfterClass() throws Exception {<a name="line.100"></a>
<span class="sourceLineNo">101</span> TEST_UTIL.shutdownMiniCluster();<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> @After<a name="line.104"></a>
<span class="sourceLineNo">105</span> public void tearDown() throws IOException {<a name="line.105"></a>
<span class="sourceLineNo">106</span> TEST_UTIL.getAdmin().balancerSwitch(true, true);<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span> /**<a name="line.109"></a>
<span class="sourceLineNo">110</span> * Naive test to check that Connection#getAdmin returns a properly constructed HBaseAdmin object<a name="line.110"></a>
<span class="sourceLineNo">111</span> * @throws IOException Unable to construct admin<a name="line.111"></a>
<span class="sourceLineNo">112</span> */<a name="line.112"></a>
<span class="sourceLineNo">113</span> @Test<a name="line.113"></a>
<span class="sourceLineNo">114</span> public void testAdminFactory() throws IOException {<a name="line.114"></a>
<span class="sourceLineNo">115</span> Connection con1 = ConnectionFactory.createConnection(TEST_UTIL.getConfiguration());<a name="line.115"></a>
<span class="sourceLineNo">116</span> Admin admin = con1.getAdmin();<a name="line.116"></a>
<span class="sourceLineNo">117</span> assertTrue(admin.getConnection() == con1);<a name="line.117"></a>
<span class="sourceLineNo">118</span> assertTrue(admin.getConfiguration() == TEST_UTIL.getConfiguration());<a name="line.118"></a>
<span class="sourceLineNo">119</span> con1.close();<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> /**<a name="line.122"></a>
<span class="sourceLineNo">123</span> * Test that we can handle connection close: it will trigger a retry, but the calls will finish.<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 testConnectionCloseAllowsInterrupt() throws Exception {<a name="line.126"></a>
<span class="sourceLineNo">127</span> testConnectionClose(true);<a name="line.127"></a>
<span class="sourceLineNo">128</span> }<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span> @Test<a name="line.130"></a>
<span class="sourceLineNo">131</span> public void testConnectionNotAllowsInterrupt() throws Exception {<a name="line.131"></a>
<span class="sourceLineNo">132</span> testConnectionClose(false);<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> private void testConnectionClose(boolean allowsInterrupt) throws Exception {<a name="line.135"></a>
<span class="sourceLineNo">136</span> TableName tableName = TableName.valueOf("HCM-testConnectionClose" + allowsInterrupt);<a name="line.136"></a>
<span class="sourceLineNo">137</span> TEST_UTIL.createTable(tableName, FAM_NAM).close();<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span> TEST_UTIL.getAdmin().balancerSwitch(false, true);<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span> Configuration c2 = new Configuration(TEST_UTIL.getConfiguration());<a name="line.141"></a>
<span class="sourceLineNo">142</span> // We want to work on a separate connection.<a name="line.142"></a>
<span class="sourceLineNo">143</span> c2.set(HConstants.HBASE_CLIENT_INSTANCE_ID, String.valueOf(-1));<a name="line.143"></a>
<span class="sourceLineNo">144</span> c2.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 100); // retry a lot<a name="line.144"></a>
<span class="sourceLineNo">145</span> c2.setInt(HConstants.HBASE_CLIENT_PAUSE, 1); // don't wait between retries.<a name="line.145"></a>
<span class="sourceLineNo">146</span> c2.setInt(RpcClient.FAILED_SERVER_EXPIRY_KEY, 0); // Server do not really expire<a name="line.146"></a>
<span class="sourceLineNo">147</span> c2.setBoolean(RpcClient.SPECIFIC_WRITE_THREAD, allowsInterrupt);<a name="line.147"></a>
<span class="sourceLineNo">148</span> // to avoid the client to be stuck when do the Get<a name="line.148"></a>
<span class="sourceLineNo">149</span> c2.setInt(HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT, 10000);<a name="line.149"></a>
<span class="sourceLineNo">150</span> c2.setInt(HConstants.HBASE_CLIENT_OPERATION_TIMEOUT, 10000);<a name="line.150"></a>
<span class="sourceLineNo">151</span> c2.setInt(HConstants.HBASE_RPC_TIMEOUT_KEY, 5000);<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span> Connection connection = ConnectionFactory.createConnection(c2);<a name="line.153"></a>
<span class="sourceLineNo">154</span> final Table table = connection.getTable(tableName);<a name="line.154"></a>
<span class="sourceLineNo">155</span><a name="line.155"></a>
<span class="sourceLineNo">156</span> Put put = new Put(ROW);<a name="line.156"></a>
<span class="sourceLineNo">157</span> put.addColumn(FAM_NAM, ROW, ROW);<a name="line.157"></a>
<span class="sourceLineNo">158</span> table.put(put);<a name="line.158"></a>
<span class="sourceLineNo">159</span><a name="line.159"></a>
<span class="sourceLineNo">160</span> // 4 steps: ready=0; doGets=1; mustStop=2; stopped=3<a name="line.160"></a>
<span class="sourceLineNo">161</span> final AtomicInteger step = new AtomicInteger(0);<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span> final AtomicReference&lt;Throwable&gt; failed = new AtomicReference&lt;&gt;(null);<a name="line.163"></a>
<span class="sourceLineNo">164</span> Thread t = new Thread("testConnectionCloseThread") {<a name="line.164"></a>
<span class="sourceLineNo">165</span> @Override<a name="line.165"></a>
<span class="sourceLineNo">166</span> public void run() {<a name="line.166"></a>
<span class="sourceLineNo">167</span> int done = 0;<a name="line.167"></a>
<span class="sourceLineNo">168</span> try {<a name="line.168"></a>
<span class="sourceLineNo">169</span> step.set(1);<a name="line.169"></a>
<span class="sourceLineNo">170</span> while (step.get() == 1) {<a name="line.170"></a>
<span class="sourceLineNo">171</span> Get get = new Get(ROW);<a name="line.171"></a>
<span class="sourceLineNo">172</span> table.get(get);<a name="line.172"></a>
<span class="sourceLineNo">173</span> done++;<a name="line.173"></a>
<span class="sourceLineNo">174</span> if (done % 100 == 0) {<a name="line.174"></a>
<span class="sourceLineNo">175</span> LOG.info("done=" + done);<a name="line.175"></a>
<span class="sourceLineNo">176</span> }<a name="line.176"></a>
<span class="sourceLineNo">177</span> // without the sleep, will cause the exception for too many files in<a name="line.177"></a>
<span class="sourceLineNo">178</span> // org.apache.hadoop.hdfs.server.datanode.DataXceiver<a name="line.178"></a>
<span class="sourceLineNo">179</span> Thread.sleep(100);<a name="line.179"></a>
<span class="sourceLineNo">180</span> }<a name="line.180"></a>
<span class="sourceLineNo">181</span> } catch (Throwable t) {<a name="line.181"></a>
<span class="sourceLineNo">182</span> failed.set(t);<a name="line.182"></a>
<span class="sourceLineNo">183</span> LOG.error(t.toString(), t);<a name="line.183"></a>
<span class="sourceLineNo">184</span> }<a name="line.184"></a>
<span class="sourceLineNo">185</span> step.set(3);<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span> };<a name="line.187"></a>
<span class="sourceLineNo">188</span> t.start();<a name="line.188"></a>
<span class="sourceLineNo">189</span> TEST_UTIL.waitFor(20000, new Waiter.Predicate&lt;Exception&gt;() {<a name="line.189"></a>
<span class="sourceLineNo">190</span> @Override<a name="line.190"></a>
<span class="sourceLineNo">191</span> public boolean evaluate() throws Exception {<a name="line.191"></a>
<span class="sourceLineNo">192</span> return step.get() == 1;<a name="line.192"></a>
<span class="sourceLineNo">193</span> }<a name="line.193"></a>
<span class="sourceLineNo">194</span> });<a name="line.194"></a>
<span class="sourceLineNo">195</span><a name="line.195"></a>
<span class="sourceLineNo">196</span> ServerName sn;<a name="line.196"></a>
<span class="sourceLineNo">197</span> try (RegionLocator rl = connection.getRegionLocator(tableName)) {<a name="line.197"></a>
<span class="sourceLineNo">198</span> sn = rl.getRegionLocation(ROW).getServerName();<a name="line.198"></a>
<span class="sourceLineNo">199</span> }<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span> RpcClient rpcClient = ((AsyncConnectionImpl) connection.toAsyncConnection()).rpcClient;<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span> LOG.info("Going to cancel connections. connection=" + connection.toString() + ", sn=" + sn);<a name="line.203"></a>
<span class="sourceLineNo">204</span> for (int i = 0; i &lt; 500; i++) {<a name="line.204"></a>
<span class="sourceLineNo">205</span> rpcClient.cancelConnections(sn);<a name="line.205"></a>
<span class="sourceLineNo">206</span> Thread.sleep(50);<a name="line.206"></a>
<span class="sourceLineNo">207</span> }<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span> step.compareAndSet(1, 2);<a name="line.209"></a>
<span class="sourceLineNo">210</span> // The test may fail here if the thread doing the gets is stuck. The way to find<a name="line.210"></a>
<span class="sourceLineNo">211</span> // out what's happening is to look for the thread named 'testConnectionCloseThread'<a name="line.211"></a>
<span class="sourceLineNo">212</span> TEST_UTIL.waitFor(40000, new Waiter.Predicate&lt;Exception&gt;() {<a name="line.212"></a>
<span class="sourceLineNo">213</span> @Override<a name="line.213"></a>
<span class="sourceLineNo">214</span> public boolean evaluate() throws Exception {<a name="line.214"></a>
<span class="sourceLineNo">215</span> return step.get() == 3;<a name="line.215"></a>
<span class="sourceLineNo">216</span> }<a name="line.216"></a>
<span class="sourceLineNo">217</span> });<a name="line.217"></a>
<span class="sourceLineNo">218</span> table.close();<a name="line.218"></a>
<span class="sourceLineNo">219</span> connection.close();<a name="line.219"></a>
<span class="sourceLineNo">220</span> Assert.assertTrue("Unexpected exception is " + failed.get(), failed.get() == null);<a name="line.220"></a>
<span class="sourceLineNo">221</span> }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span> /**<a name="line.223"></a>
<span class="sourceLineNo">224</span> * Test that connection can become idle without breaking everything.<a name="line.224"></a>
<span class="sourceLineNo">225</span> */<a name="line.225"></a>
<span class="sourceLineNo">226</span> @Test<a name="line.226"></a>
<span class="sourceLineNo">227</span> public void testConnectionIdle() throws Exception {<a name="line.227"></a>
<span class="sourceLineNo">228</span> final TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.228"></a>
<span class="sourceLineNo">229</span> TEST_UTIL.createTable(tableName, FAM_NAM).close();<a name="line.229"></a>
<span class="sourceLineNo">230</span> int idleTime = 20000;<a name="line.230"></a>
<span class="sourceLineNo">231</span> boolean previousBalance = TEST_UTIL.getAdmin().balancerSwitch(false, true);<a name="line.231"></a>
<span class="sourceLineNo">232</span><a name="line.232"></a>
<span class="sourceLineNo">233</span> Configuration c2 = new Configuration(TEST_UTIL.getConfiguration());<a name="line.233"></a>
<span class="sourceLineNo">234</span> // We want to work on a separate connection.<a name="line.234"></a>
<span class="sourceLineNo">235</span> c2.set(HConstants.HBASE_CLIENT_INSTANCE_ID, String.valueOf(-1));<a name="line.235"></a>
<span class="sourceLineNo">236</span> c2.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 1); // Don't retry: retry = test failed<a name="line.236"></a>
<span class="sourceLineNo">237</span> c2.setInt(RpcClient.IDLE_TIME, idleTime);<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span> Connection connection = ConnectionFactory.createConnection(c2);<a name="line.239"></a>
<span class="sourceLineNo">240</span> final Table table = connection.getTable(tableName);<a name="line.240"></a>
<span class="sourceLineNo">241</span><a name="line.241"></a>
<span class="sourceLineNo">242</span> Put put = new Put(ROW);<a name="line.242"></a>
<span class="sourceLineNo">243</span> put.addColumn(FAM_NAM, ROW, ROW);<a name="line.243"></a>
<span class="sourceLineNo">244</span> table.put(put);<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span> ManualEnvironmentEdge mee = new ManualEnvironmentEdge();<a name="line.246"></a>
<span class="sourceLineNo">247</span> mee.setValue(EnvironmentEdgeManager.currentTime());<a name="line.247"></a>
<span class="sourceLineNo">248</span> EnvironmentEdgeManager.injectEdge(mee);<a name="line.248"></a>
<span class="sourceLineNo">249</span> LOG.info("first get");<a name="line.249"></a>
<span class="sourceLineNo">250</span> table.get(new Get(ROW));<a name="line.250"></a>
<span class="sourceLineNo">251</span><a name="line.251"></a>
<span class="sourceLineNo">252</span> LOG.info("first get - changing the time &amp; sleeping");<a name="line.252"></a>
<span class="sourceLineNo">253</span> mee.incValue(idleTime + 1000);<a name="line.253"></a>
<span class="sourceLineNo">254</span> Thread.sleep(1500); // we need to wait a little for the connection to be seen as idle.<a name="line.254"></a>
<span class="sourceLineNo">255</span> // 1500 = sleep time in RpcClient#waitForWork + a margin<a name="line.255"></a>
<span class="sourceLineNo">256</span><a name="line.256"></a>
<span class="sourceLineNo">257</span> LOG.info("second get - connection has been marked idle in the middle");<a name="line.257"></a>
<span class="sourceLineNo">258</span> // To check that the connection actually became idle would need to read some private<a name="line.258"></a>
<span class="sourceLineNo">259</span> // fields of RpcClient.<a name="line.259"></a>
<span class="sourceLineNo">260</span> table.get(new Get(ROW));<a name="line.260"></a>
<span class="sourceLineNo">261</span> mee.incValue(idleTime + 1000);<a name="line.261"></a>
<span class="sourceLineNo">262</span><a name="line.262"></a>
<span class="sourceLineNo">263</span> LOG.info("third get - connection is idle, but the reader doesn't know yet");<a name="line.263"></a>
<span class="sourceLineNo">264</span> // We're testing here a special case:<a name="line.264"></a>
<span class="sourceLineNo">265</span> // time limit reached BUT connection not yet reclaimed AND a new call.<a name="line.265"></a>
<span class="sourceLineNo">266</span> // in this situation, we don't close the connection, instead we use it immediately.<a name="line.266"></a>
<span class="sourceLineNo">267</span> // If we're very unlucky we can have a race condition in the test: the connection is already<a name="line.267"></a>
<span class="sourceLineNo">268</span> // under closing when we do the get, so we have an exception, and we don't retry as the<a name="line.268"></a>
<span class="sourceLineNo">269</span> // retry number is 1. The probability is very very low, and seems acceptable for now. It's<a name="line.269"></a>
<span class="sourceLineNo">270</span> // a test issue only.<a name="line.270"></a>
<span class="sourceLineNo">271</span> table.get(new Get(ROW));<a name="line.271"></a>
<span class="sourceLineNo">272</span><a name="line.272"></a>
<span class="sourceLineNo">273</span> LOG.info("we're done - time will change back");<a name="line.273"></a>
<span class="sourceLineNo">274</span><a name="line.274"></a>
<span class="sourceLineNo">275</span> table.close();<a name="line.275"></a>
<span class="sourceLineNo">276</span><a name="line.276"></a>
<span class="sourceLineNo">277</span> connection.close();<a name="line.277"></a>
<span class="sourceLineNo">278</span> EnvironmentEdgeManager.reset();<a name="line.278"></a>
<span class="sourceLineNo">279</span> TEST_UTIL.getAdmin().balancerSwitch(previousBalance, true);<a name="line.279"></a>
<span class="sourceLineNo">280</span> }<a name="line.280"></a>
<span class="sourceLineNo">281</span><a name="line.281"></a>
<span class="sourceLineNo">282</span> @Test<a name="line.282"></a>
<span class="sourceLineNo">283</span> public void testClosing() throws Exception {<a name="line.283"></a>
<span class="sourceLineNo">284</span> Configuration configuration = new Configuration(TEST_UTIL.getConfiguration());<a name="line.284"></a>
<span class="sourceLineNo">285</span> configuration.set(HConstants.HBASE_CLIENT_INSTANCE_ID,<a name="line.285"></a>
<span class="sourceLineNo">286</span> String.valueOf(ThreadLocalRandom.current().nextInt()));<a name="line.286"></a>
<span class="sourceLineNo">287</span><a name="line.287"></a>
<span class="sourceLineNo">288</span> // as connection caching is going away, now we're just testing<a name="line.288"></a>
<span class="sourceLineNo">289</span> // that closed connection does actually get closed.<a name="line.289"></a>
<span class="sourceLineNo">290</span><a name="line.290"></a>
<span class="sourceLineNo">291</span> Connection c1 = ConnectionFactory.createConnection(configuration);<a name="line.291"></a>
<span class="sourceLineNo">292</span> Connection c2 = ConnectionFactory.createConnection(configuration);<a name="line.292"></a>
<span class="sourceLineNo">293</span> // no caching, different connections<a name="line.293"></a>
<span class="sourceLineNo">294</span> assertTrue(c1 != c2);<a name="line.294"></a>
<span class="sourceLineNo">295</span><a name="line.295"></a>
<span class="sourceLineNo">296</span> // closing independently<a name="line.296"></a>
<span class="sourceLineNo">297</span> c1.close();<a name="line.297"></a>
<span class="sourceLineNo">298</span> assertTrue(c1.isClosed());<a name="line.298"></a>
<span class="sourceLineNo">299</span> assertFalse(c2.isClosed());<a name="line.299"></a>
<span class="sourceLineNo">300</span><a name="line.300"></a>
<span class="sourceLineNo">301</span> c2.close();<a name="line.301"></a>
<span class="sourceLineNo">302</span> assertTrue(c2.isClosed());<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> * Trivial test to verify that nobody messes with<a name="line.306"></a>
<span class="sourceLineNo">307</span> * {@link ConnectionFactory#createConnection(Configuration)}<a name="line.307"></a>
<span class="sourceLineNo">308</span> */<a name="line.308"></a>
<span class="sourceLineNo">309</span> @Test<a name="line.309"></a>
<span class="sourceLineNo">310</span> public void testCreateConnection() throws Exception {<a name="line.310"></a>
<span class="sourceLineNo">311</span> Configuration configuration = TEST_UTIL.getConfiguration();<a name="line.311"></a>
<span class="sourceLineNo">312</span> Connection c1 = ConnectionFactory.createConnection(configuration);<a name="line.312"></a>
<span class="sourceLineNo">313</span> Connection c2 = ConnectionFactory.createConnection(configuration);<a name="line.313"></a>
<span class="sourceLineNo">314</span> // created from the same configuration, yet they are different<a name="line.314"></a>
<span class="sourceLineNo">315</span> assertTrue(c1 != c2);<a name="line.315"></a>
<span class="sourceLineNo">316</span> assertTrue(c1.getConfiguration() == c2.getConfiguration());<a name="line.316"></a>
<span class="sourceLineNo">317</span> }<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> * ====&gt; With MasterRegistry, connections cannot outlast the masters' lifetime.<a name="line.320"></a>
<span class="sourceLineNo">321</span> * @Test public void testConnectionRideOverClusterRestart() throws IOException,<a name="line.321"></a>
<span class="sourceLineNo">322</span> * InterruptedException { Configuration config = new Configuration(TEST_UTIL.getConfiguration());<a name="line.322"></a>
<span class="sourceLineNo">323</span> * final TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.323"></a>
<span class="sourceLineNo">324</span> * TEST_UTIL.createTable(tableName, new byte[][] { FAM_NAM }).close(); Connection connection =<a name="line.324"></a>
<span class="sourceLineNo">325</span> * ConnectionFactory.createConnection(config); Table table = connection.getTable(tableName); //<a name="line.325"></a>
<span class="sourceLineNo">326</span> * this will cache the meta location and table's region location table.get(new<a name="line.326"></a>
<span class="sourceLineNo">327</span> * Get(Bytes.toBytes("foo"))); // restart HBase TEST_UTIL.shutdownMiniHBaseCluster();<a name="line.327"></a>
<span class="sourceLineNo">328</span> * TEST_UTIL.restartHBaseCluster(2); // this should be able to discover new locations for meta and<a name="line.328"></a>
<span class="sourceLineNo">329</span> * table's region table.get(new Get(Bytes.toBytes("foo"))); TEST_UTIL.deleteTable(tableName);<a name="line.329"></a>
<span class="sourceLineNo">330</span> * table.close(); connection.close(); }<a name="line.330"></a>
<span class="sourceLineNo">331</span> */<a name="line.331"></a>
<span class="sourceLineNo">332</span><a name="line.332"></a>
<span class="sourceLineNo">333</span> @Test<a name="line.333"></a>
<span class="sourceLineNo">334</span> public void testLocateRegionsWithRegionReplicas() throws IOException {<a name="line.334"></a>
<span class="sourceLineNo">335</span> int regionReplication = 3;<a name="line.335"></a>
<span class="sourceLineNo">336</span> byte[] family = Bytes.toBytes("cf");<a name="line.336"></a>
<span class="sourceLineNo">337</span> TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.337"></a>
<span class="sourceLineNo">338</span><a name="line.338"></a>
<span class="sourceLineNo">339</span> // Create a table with region replicas<a name="line.339"></a>
<span class="sourceLineNo">340</span> TableDescriptorBuilder builder =<a name="line.340"></a>
<span class="sourceLineNo">341</span> TableDescriptorBuilder.newBuilder(tableName).setRegionReplication(regionReplication)<a name="line.341"></a>
<span class="sourceLineNo">342</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(family));<a name="line.342"></a>
<span class="sourceLineNo">343</span> TEST_UTIL.getAdmin().createTable(builder.build());<a name="line.343"></a>
<span class="sourceLineNo">344</span><a name="line.344"></a>
<span class="sourceLineNo">345</span> try (Connection conn = ConnectionFactory.createConnection(TEST_UTIL.getConfiguration());<a name="line.345"></a>
<span class="sourceLineNo">346</span> RegionLocator locator = conn.getRegionLocator(tableName)) {<a name="line.346"></a>
<span class="sourceLineNo">347</span> // Get locations of the regions of the table<a name="line.347"></a>
<span class="sourceLineNo">348</span> List&lt;HRegionLocation&gt; locations = locator.getAllRegionLocations();<a name="line.348"></a>
<span class="sourceLineNo">349</span><a name="line.349"></a>
<span class="sourceLineNo">350</span> // The size of the returned locations should be 3<a name="line.350"></a>
<span class="sourceLineNo">351</span> assertEquals(regionReplication, locations.size());<a name="line.351"></a>
<span class="sourceLineNo">352</span><a name="line.352"></a>
<span class="sourceLineNo">353</span> // The replicaIds of the returned locations should be 0, 1 and 2<a name="line.353"></a>
<span class="sourceLineNo">354</span> Set&lt;Integer&gt; expectedReplicaIds =<a name="line.354"></a>
<span class="sourceLineNo">355</span> IntStream.range(0, regionReplication).boxed().collect(Collectors.toSet());<a name="line.355"></a>
<span class="sourceLineNo">356</span> for (HRegionLocation location : locations) {<a name="line.356"></a>
<span class="sourceLineNo">357</span> assertTrue(expectedReplicaIds.remove(location.getRegion().getReplicaId()));<a name="line.357"></a>
<span class="sourceLineNo">358</span> }<a name="line.358"></a>
<span class="sourceLineNo">359</span> } finally {<a name="line.359"></a>
<span class="sourceLineNo">360</span> TEST_UTIL.deleteTable(tableName);<a name="line.360"></a>
<span class="sourceLineNo">361</span> }<a name="line.361"></a>
<span class="sourceLineNo">362</span> }<a name="line.362"></a>
<span class="sourceLineNo">363</span><a name="line.363"></a>
<span class="sourceLineNo">364</span> @Test(expected = DoNotRetryIOException.class)<a name="line.364"></a>
<span class="sourceLineNo">365</span> public void testClosedConnection() throws ServiceException, Throwable {<a name="line.365"></a>
<span class="sourceLineNo">366</span> byte[] family = Bytes.toBytes("cf");<a name="line.366"></a>
<span class="sourceLineNo">367</span> TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.367"></a>
<span class="sourceLineNo">368</span> TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableName)<a name="line.368"></a>
<span class="sourceLineNo">369</span> .setCoprocessor(MultiRowMutationEndpoint.class.getName())<a name="line.369"></a>
<span class="sourceLineNo">370</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(family));<a name="line.370"></a>
<span class="sourceLineNo">371</span> TEST_UTIL.getAdmin().createTable(builder.build());<a name="line.371"></a>
<span class="sourceLineNo">372</span><a name="line.372"></a>
<span class="sourceLineNo">373</span> Connection conn = ConnectionFactory.createConnection(TEST_UTIL.getConfiguration());<a name="line.373"></a>
<span class="sourceLineNo">374</span> // cache the location<a name="line.374"></a>
<span class="sourceLineNo">375</span> try (Table table = conn.getTable(tableName)) {<a name="line.375"></a>
<span class="sourceLineNo">376</span> table.get(new Get(Bytes.toBytes(0)));<a name="line.376"></a>
<span class="sourceLineNo">377</span> } finally {<a name="line.377"></a>
<span class="sourceLineNo">378</span> conn.close();<a name="line.378"></a>
<span class="sourceLineNo">379</span> }<a name="line.379"></a>
<span class="sourceLineNo">380</span> Batch.Call&lt;MultiRowMutationService, MutateRowsResponse&gt; callable = service -&gt; {<a name="line.380"></a>
<span class="sourceLineNo">381</span> throw new RuntimeException("Should not arrive here");<a name="line.381"></a>
<span class="sourceLineNo">382</span> };<a name="line.382"></a>
<span class="sourceLineNo">383</span> conn.getTable(tableName).coprocessorService(MultiRowMutationService.class,<a name="line.383"></a>
<span class="sourceLineNo">384</span> HConstants.EMPTY_START_ROW, HConstants.EMPTY_END_ROW, callable);<a name="line.384"></a>
<span class="sourceLineNo">385</span> }<a name="line.385"></a>
<span class="sourceLineNo">386</span><a name="line.386"></a>
<span class="sourceLineNo">387</span> // There is no assertion, but you need to confirm that there is no resource leak output from netty<a name="line.387"></a>
<span class="sourceLineNo">388</span> @Test<a name="line.388"></a>
<span class="sourceLineNo">389</span> public void testCancelConnectionMemoryLeak() throws IOException, InterruptedException {<a name="line.389"></a>
<span class="sourceLineNo">390</span> TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.390"></a>
<span class="sourceLineNo">391</span> TEST_UTIL.createTable(tableName, FAM_NAM).close();<a name="line.391"></a>
<span class="sourceLineNo">392</span> TEST_UTIL.getAdmin().balancerSwitch(false, true);<a name="line.392"></a>
<span class="sourceLineNo">393</span> try (Connection connection = ConnectionFactory.createConnection(TEST_UTIL.getConfiguration());<a name="line.393"></a>
<span class="sourceLineNo">394</span> Table table = connection.getTable(tableName)) {<a name="line.394"></a>
<span class="sourceLineNo">395</span> table.get(new Get(Bytes.toBytes("1")));<a name="line.395"></a>
<span class="sourceLineNo">396</span> ServerName sn = TEST_UTIL.getRSForFirstRegionInTable(tableName).getServerName();<a name="line.396"></a>
<span class="sourceLineNo">397</span> RpcClient rpcClient = ((AsyncConnectionImpl) connection.toAsyncConnection()).rpcClient;<a name="line.397"></a>
<span class="sourceLineNo">398</span> rpcClient.cancelConnections(sn);<a name="line.398"></a>
<span class="sourceLineNo">399</span> Thread.sleep(1000);<a name="line.399"></a>
<span class="sourceLineNo">400</span> System.gc();<a name="line.400"></a>
<span class="sourceLineNo">401</span> Thread.sleep(1000);<a name="line.401"></a>
<span class="sourceLineNo">402</span> }<a name="line.402"></a>
<span class="sourceLineNo">403</span> }<a name="line.403"></a>
<span class="sourceLineNo">404</span>}<a name="line.404"></a>
</pre>
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