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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.regionserver;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertNotNull;</span> |
| <span class="source-line-no">022</span><span id="line-22"></span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.IOException;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.Optional;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.atomic.AtomicReference;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HRegionLocation;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.StartTestingClusterOption;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.Connection;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.ConnectionFactory;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.client.Put;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.RetriesExhaustedException;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.client.Table;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.client.TableDescriptor;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.client.TableDescriptorBuilder;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.coprocessor.ObserverContext;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.coprocessor.RegionObserver;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.ipc.CallRunner;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.ipc.PluggableBlockingQueue;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.ipc.PriorityFunction;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.ipc.TestPluggableQueueImpl;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.testclassification.RegionServerTests;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.apache.hadoop.hbase.util.JVMClusterUtil;</span> |
| <span class="source-line-no">055</span><span id="line-55">import org.apache.hadoop.hbase.util.Threads;</span> |
| <span class="source-line-no">056</span><span id="line-56">import org.junit.AfterClass;</span> |
| <span class="source-line-no">057</span><span id="line-57">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">058</span><span id="line-58">import org.junit.ClassRule;</span> |
| <span class="source-line-no">059</span><span id="line-59">import org.junit.Test;</span> |
| <span class="source-line-no">060</span><span id="line-60">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">061</span><span id="line-61">import org.slf4j.Logger;</span> |
| <span class="source-line-no">062</span><span id="line-62">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64">@Category({ RegionServerTests.class, MediumTests.class })</span> |
| <span class="source-line-no">065</span><span id="line-65">public class TestRegionServerRejectDuringAbort {</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> @ClassRule</span> |
| <span class="source-line-no">068</span><span id="line-68"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">069</span><span id="line-69"> HBaseClassTestRule.forClass(TestRegionServerRejectDuringAbort.class);</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> private static final Logger LOG =</span> |
| <span class="source-line-no">072</span><span id="line-72"> LoggerFactory.getLogger(TestRegionServerRejectDuringAbort.class);</span> |
| <span class="source-line-no">073</span><span id="line-73"></span> |
| <span class="source-line-no">074</span><span id="line-74"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> private static TableName TABLE_NAME = TableName.valueOf("RSRejectOnAbort");</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> private static byte[] CF = Bytes.toBytes("cf");</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> private static final int REGIONS_NUM = 5;</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> private static final AtomicReference<Exception> THROWN_EXCEPTION = new AtomicReference<>(null);</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84"> private static volatile boolean shouldThrowTooBig = false;</span> |
| <span class="source-line-no">085</span><span id="line-85"></span> |
| <span class="source-line-no">086</span><span id="line-86"> @BeforeClass</span> |
| <span class="source-line-no">087</span><span id="line-87"> public static void setUp() throws Exception {</span> |
| <span class="source-line-no">088</span><span id="line-88"> // Will schedule a abort timeout task after SLEEP_TIME_WHEN_CLOSE_REGION ms</span> |
| <span class="source-line-no">089</span><span id="line-89"> UTIL.getConfiguration().set("hbase.ipc.server.callqueue.type", "pluggable");</span> |
| <span class="source-line-no">090</span><span id="line-90"> UTIL.getConfiguration().setClass("hbase.ipc.server.callqueue.pluggable.queue.class.name",</span> |
| <span class="source-line-no">091</span><span id="line-91"> CallQueueTooBigThrowingQueue.class, PluggableBlockingQueue.class);</span> |
| <span class="source-line-no">092</span><span id="line-92"> StartTestingClusterOption option =</span> |
| <span class="source-line-no">093</span><span id="line-93"> StartTestingClusterOption.builder().numRegionServers(2).build();</span> |
| <span class="source-line-no">094</span><span id="line-94"> UTIL.startMiniCluster(option);</span> |
| <span class="source-line-no">095</span><span id="line-95"> TableDescriptor td = TableDescriptorBuilder.newBuilder(TABLE_NAME)</span> |
| <span class="source-line-no">096</span><span id="line-96"> .setCoprocessor(SleepWhenCloseCoprocessor.class.getName())</span> |
| <span class="source-line-no">097</span><span id="line-97"> .setColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(CF).build()).build();</span> |
| <span class="source-line-no">098</span><span id="line-98"> UTIL.getAdmin().createTable(td, Bytes.toBytes("0"), Bytes.toBytes("9"), REGIONS_NUM);</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"></span> |
| <span class="source-line-no">101</span><span id="line-101"> public static final class CallQueueTooBigThrowingQueue extends TestPluggableQueueImpl {</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> public CallQueueTooBigThrowingQueue(int maxQueueLength, PriorityFunction priority,</span> |
| <span class="source-line-no">104</span><span id="line-104"> Configuration conf) {</span> |
| <span class="source-line-no">105</span><span id="line-105"> super(maxQueueLength, priority, conf);</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> @Override</span> |
| <span class="source-line-no">109</span><span id="line-109"> public boolean offer(CallRunner callRunner) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> if (shouldThrowTooBig && callRunner.getRpcCall().getRequestAttribute("test") != null) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> return false;</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"> return super.offer(callRunner);</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"> }</span> |
| <span class="source-line-no">116</span><span id="line-116"></span> |
| <span class="source-line-no">117</span><span id="line-117"> @AfterClass</span> |
| <span class="source-line-no">118</span><span id="line-118"> public static void tearDown() throws Exception {</span> |
| <span class="source-line-no">119</span><span id="line-119"> UTIL.shutdownMiniCluster();</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"> /**</span> |
| <span class="source-line-no">123</span><span id="line-123"> * Tests that the logic in ServerRpcConnection works such that if the server is aborted, it short</span> |
| <span class="source-line-no">124</span><span id="line-124"> * circuits any other logic. This means we no longer even attempt to enqueue the request onto the</span> |
| <span class="source-line-no">125</span><span id="line-125"> * call queue. We verify this by using a special call queue which we can trigger to always return</span> |
| <span class="source-line-no">126</span><span id="line-126"> * CallQueueTooBigException. If the logic works, despite forcing those exceptions, we should not</span> |
| <span class="source-line-no">127</span><span id="line-127"> * see them.</span> |
| <span class="source-line-no">128</span><span id="line-128"> */</span> |
| <span class="source-line-no">129</span><span id="line-129"> @Test</span> |
| <span class="source-line-no">130</span><span id="line-130"> public void testRejectRequestsOnAbort() throws Exception {</span> |
| <span class="source-line-no">131</span><span id="line-131"> // We don't want to disrupt the server carrying meta, because we plan to disrupt requests to</span> |
| <span class="source-line-no">132</span><span id="line-132"> // the server. Disrupting meta requests messes with the test.</span> |
| <span class="source-line-no">133</span><span id="line-133"> HRegionServer serverWithoutMeta = null;</span> |
| <span class="source-line-no">134</span><span id="line-134"> for (JVMClusterUtil.RegionServerThread regionServerThread : UTIL.getMiniHBaseCluster()</span> |
| <span class="source-line-no">135</span><span id="line-135"> .getRegionServerThreads()) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> HRegionServer regionServer = regionServerThread.getRegionServer();</span> |
| <span class="source-line-no">137</span><span id="line-137"> if (</span> |
| <span class="source-line-no">138</span><span id="line-138"> regionServer.getRegions(TableName.META_TABLE_NAME).isEmpty()</span> |
| <span class="source-line-no">139</span><span id="line-139"> && !regionServer.getRegions(TABLE_NAME).isEmpty()</span> |
| <span class="source-line-no">140</span><span id="line-140"> ) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> serverWithoutMeta = regionServer;</span> |
| <span class="source-line-no">142</span><span id="line-142"> break;</span> |
| <span class="source-line-no">143</span><span id="line-143"> }</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> assertNotNull("couldn't find a server without meta, but with test table regions",</span> |
| <span class="source-line-no">147</span><span id="line-147"> serverWithoutMeta);</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> Thread writer = new Thread(getWriterThreadRunnable(serverWithoutMeta.getServerName()));</span> |
| <span class="source-line-no">150</span><span id="line-150"> writer.setDaemon(true);</span> |
| <span class="source-line-no">151</span><span id="line-151"> writer.start();</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> // Trigger the abort. Our WriterThread will detect the first RegionServerAbortedException</span> |
| <span class="source-line-no">154</span><span id="line-154"> // and trigger our custom queue to reject any more requests. This would typically result in</span> |
| <span class="source-line-no">155</span><span id="line-155"> // CallQueueTooBigException, unless our logic in ServerRpcConnection to preempt the processing</span> |
| <span class="source-line-no">156</span><span id="line-156"> // of a request is working.</span> |
| <span class="source-line-no">157</span><span id="line-157"> serverWithoutMeta.abort("Abort RS for test");</span> |
| <span class="source-line-no">158</span><span id="line-158"></span> |
| <span class="source-line-no">159</span><span id="line-159"> UTIL.waitFor(60_000, () -> THROWN_EXCEPTION.get() != null);</span> |
| <span class="source-line-no">160</span><span id="line-160"> assertEquals(THROWN_EXCEPTION.get().getCause().getClass(), RegionServerAbortedException.class);</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> private Runnable getWriterThreadRunnable(ServerName loadServer) {</span> |
| <span class="source-line-no">164</span><span id="line-164"> return () -> {</span> |
| <span class="source-line-no">165</span><span id="line-165"> try {</span> |
| <span class="source-line-no">166</span><span id="line-166"> Configuration conf = UTIL.getConfiguration();</span> |
| <span class="source-line-no">167</span><span id="line-167"> conf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 5);</span> |
| <span class="source-line-no">168</span><span id="line-168"> try (Connection conn = ConnectionFactory.createConnection(conf);</span> |
| <span class="source-line-no">169</span><span id="line-169"> Table table = conn.getTableBuilder(TABLE_NAME, null)</span> |
| <span class="source-line-no">170</span><span id="line-170"> .setRequestAttribute("test", new byte[] { 0 }).build()) {</span> |
| <span class="source-line-no">171</span><span id="line-171"> // find the first region to exist on our test server, then submit requests to it</span> |
| <span class="source-line-no">172</span><span id="line-172"> for (HRegionLocation regionLocation : table.getRegionLocator().getAllRegionLocations()) {</span> |
| <span class="source-line-no">173</span><span id="line-173"> if (regionLocation.getServerName().equals(loadServer)) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> submitRequestsToRegion(table, regionLocation.getRegion());</span> |
| <span class="source-line-no">175</span><span id="line-175"> return;</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> }</span> |
| <span class="source-line-no">178</span><span id="line-178"> throw new RuntimeException("Failed to find any regions for loadServer " + loadServer);</span> |
| <span class="source-line-no">179</span><span id="line-179"> }</span> |
| <span class="source-line-no">180</span><span id="line-180"> } catch (Exception e) {</span> |
| <span class="source-line-no">181</span><span id="line-181"> LOG.warn("Failed to load data", e);</span> |
| <span class="source-line-no">182</span><span id="line-182"> synchronized (THROWN_EXCEPTION) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> THROWN_EXCEPTION.set(e);</span> |
| <span class="source-line-no">184</span><span id="line-184"> THROWN_EXCEPTION.notifyAll();</span> |
| <span class="source-line-no">185</span><span id="line-185"> }</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"> };</span> |
| <span class="source-line-no">188</span><span id="line-188"> }</span> |
| <span class="source-line-no">189</span><span id="line-189"></span> |
| <span class="source-line-no">190</span><span id="line-190"> private void submitRequestsToRegion(Table table, RegionInfo regionInfo) throws IOException {</span> |
| <span class="source-line-no">191</span><span id="line-191"> // We will block closes of the regions with a CP, so no need to worry about the region getting</span> |
| <span class="source-line-no">192</span><span id="line-192"> // reassigned. Just use the same rowkey always.</span> |
| <span class="source-line-no">193</span><span id="line-193"> byte[] rowKey = getRowKeyWithin(regionInfo);</span> |
| <span class="source-line-no">194</span><span id="line-194"></span> |
| <span class="source-line-no">195</span><span id="line-195"> int i = 0;</span> |
| <span class="source-line-no">196</span><span id="line-196"> while (true) {</span> |
| <span class="source-line-no">197</span><span id="line-197"> try {</span> |
| <span class="source-line-no">198</span><span id="line-198"> i++;</span> |
| <span class="source-line-no">199</span><span id="line-199"> table.put(new Put(rowKey).addColumn(CF, Bytes.toBytes(i), Bytes.toBytes(i)));</span> |
| <span class="source-line-no">200</span><span id="line-200"> } catch (IOException e) {</span> |
| <span class="source-line-no">201</span><span id="line-201"> // only catch RegionServerAbortedException once. After that, the next exception thrown</span> |
| <span class="source-line-no">202</span><span id="line-202"> // is our test case</span> |
| <span class="source-line-no">203</span><span id="line-203"> if (</span> |
| <span class="source-line-no">204</span><span id="line-204"> !shouldThrowTooBig && e instanceof RetriesExhaustedException</span> |
| <span class="source-line-no">205</span><span id="line-205"> && e.getCause() instanceof RegionServerAbortedException</span> |
| <span class="source-line-no">206</span><span id="line-206"> ) {</span> |
| <span class="source-line-no">207</span><span id="line-207"> shouldThrowTooBig = true;</span> |
| <span class="source-line-no">208</span><span id="line-208"> } else {</span> |
| <span class="source-line-no">209</span><span id="line-209"> throw e;</span> |
| <span class="source-line-no">210</span><span id="line-210"> }</span> |
| <span class="source-line-no">211</span><span id="line-211"> }</span> |
| <span class="source-line-no">212</span><span id="line-212"></span> |
| <span class="source-line-no">213</span><span id="line-213"> // small sleep to relieve pressure</span> |
| <span class="source-line-no">214</span><span id="line-214"> Threads.sleep(10);</span> |
| <span class="source-line-no">215</span><span id="line-215"> }</span> |
| <span class="source-line-no">216</span><span id="line-216"> }</span> |
| <span class="source-line-no">217</span><span id="line-217"></span> |
| <span class="source-line-no">218</span><span id="line-218"> private byte[] getRowKeyWithin(RegionInfo regionInfo) {</span> |
| <span class="source-line-no">219</span><span id="line-219"> byte[] rowKey;</span> |
| <span class="source-line-no">220</span><span id="line-220"> // region is start of table, find one after start key</span> |
| <span class="source-line-no">221</span><span id="line-221"> if (regionInfo.getStartKey().length == 0) {</span> |
| <span class="source-line-no">222</span><span id="line-222"> if (regionInfo.getEndKey().length == 0) {</span> |
| <span class="source-line-no">223</span><span id="line-223"> // doesn't matter, single region table</span> |
| <span class="source-line-no">224</span><span id="line-224"> return Bytes.toBytes(1);</span> |
| <span class="source-line-no">225</span><span id="line-225"> } else {</span> |
| <span class="source-line-no">226</span><span id="line-226"> // find a row just before endkey</span> |
| <span class="source-line-no">227</span><span id="line-227"> rowKey = Bytes.copy(regionInfo.getEndKey());</span> |
| <span class="source-line-no">228</span><span id="line-228"> rowKey[rowKey.length - 1]--;</span> |
| <span class="source-line-no">229</span><span id="line-229"> return rowKey;</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> } else {</span> |
| <span class="source-line-no">232</span><span id="line-232"> return regionInfo.getStartKey();</span> |
| <span class="source-line-no">233</span><span id="line-233"> }</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> public static class SleepWhenCloseCoprocessor implements RegionCoprocessor, RegionObserver {</span> |
| <span class="source-line-no">237</span><span id="line-237"></span> |
| <span class="source-line-no">238</span><span id="line-238"> public SleepWhenCloseCoprocessor() {</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"> @Override</span> |
| <span class="source-line-no">242</span><span id="line-242"> public Optional<RegionObserver> getRegionObserver() {</span> |
| <span class="source-line-no">243</span><span id="line-243"> return Optional.of(this);</span> |
| <span class="source-line-no">244</span><span id="line-244"> }</span> |
| <span class="source-line-no">245</span><span id="line-245"></span> |
| <span class="source-line-no">246</span><span id="line-246"> @Override</span> |
| <span class="source-line-no">247</span><span id="line-247"> public void preClose(ObserverContext<RegionCoprocessorEnvironment> c, boolean abortRequested)</span> |
| <span class="source-line-no">248</span><span id="line-248"> throws IOException {</span> |
| <span class="source-line-no">249</span><span id="line-249"> // Wait so that the region can't close until we get the information we need from our test</span> |
| <span class="source-line-no">250</span><span id="line-250"> UTIL.waitFor(60_000, () -> THROWN_EXCEPTION.get() != null);</span> |
| <span class="source-line-no">251</span><span id="line-251"> }</span> |
| <span class="source-line-no">252</span><span id="line-252"> }</span> |
| <span class="source-line-no">253</span><span id="line-253">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |