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<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master.procedure;</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 java.io.IOException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.Semaphore;</span>
<span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.HBaseTestingUtil;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.procedure2.Procedure;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility.NoopProcedure;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.procedure2.ProcedureYieldException;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.testclassification.MasterTests;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">034</span><span id="line-34">import org.junit.After;</span>
<span class="source-line-no">035</span><span id="line-35">import org.junit.AfterClass;</span>
<span class="source-line-no">036</span><span id="line-36">import org.junit.Before;</span>
<span class="source-line-no">037</span><span id="line-37">import org.junit.ClassRule;</span>
<span class="source-line-no">038</span><span id="line-38">import org.junit.Rule;</span>
<span class="source-line-no">039</span><span id="line-39">import org.junit.Test;</span>
<span class="source-line-no">040</span><span id="line-40">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">041</span><span id="line-41">import org.junit.rules.TestName;</span>
<span class="source-line-no">042</span><span id="line-42"></span>
<span class="source-line-no">043</span><span id="line-43">@Category({ MasterTests.class, SmallTests.class })</span>
<span class="source-line-no">044</span><span id="line-44">public class TestSchedulerQueueDeadLock {</span>
<span class="source-line-no">045</span><span id="line-45"></span>
<span class="source-line-no">046</span><span id="line-46"> @ClassRule</span>
<span class="source-line-no">047</span><span id="line-47"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">048</span><span id="line-48"> HBaseClassTestRule.forClass(TestSchedulerQueueDeadLock.class);</span>
<span class="source-line-no">049</span><span id="line-49"></span>
<span class="source-line-no">050</span><span id="line-50"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span>
<span class="source-line-no">051</span><span id="line-51"></span>
<span class="source-line-no">052</span><span id="line-52"> private static final TableName TABLE_NAME = TableName.valueOf("deadlock");</span>
<span class="source-line-no">053</span><span id="line-53"></span>
<span class="source-line-no">054</span><span id="line-54"> private static final class TestEnv {</span>
<span class="source-line-no">055</span><span id="line-55"> private final MasterProcedureScheduler scheduler;</span>
<span class="source-line-no">056</span><span id="line-56"></span>
<span class="source-line-no">057</span><span id="line-57"> public TestEnv(MasterProcedureScheduler scheduler) {</span>
<span class="source-line-no">058</span><span id="line-58"> this.scheduler = scheduler;</span>
<span class="source-line-no">059</span><span id="line-59"> }</span>
<span class="source-line-no">060</span><span id="line-60"></span>
<span class="source-line-no">061</span><span id="line-61"> public MasterProcedureScheduler getScheduler() {</span>
<span class="source-line-no">062</span><span id="line-62"> return scheduler;</span>
<span class="source-line-no">063</span><span id="line-63"> }</span>
<span class="source-line-no">064</span><span id="line-64"> }</span>
<span class="source-line-no">065</span><span id="line-65"></span>
<span class="source-line-no">066</span><span id="line-66"> public static class TableSharedProcedure extends NoopProcedure&lt;TestEnv&gt;</span>
<span class="source-line-no">067</span><span id="line-67"> implements TableProcedureInterface {</span>
<span class="source-line-no">068</span><span id="line-68"></span>
<span class="source-line-no">069</span><span id="line-69"> private final Semaphore latch = new Semaphore(0);</span>
<span class="source-line-no">070</span><span id="line-70"></span>
<span class="source-line-no">071</span><span id="line-71"> @Override</span>
<span class="source-line-no">072</span><span id="line-72"> protected Procedure&lt;TestEnv&gt;[] execute(TestEnv env)</span>
<span class="source-line-no">073</span><span id="line-73"> throws ProcedureYieldException, ProcedureSuspendedException, InterruptedException {</span>
<span class="source-line-no">074</span><span id="line-74"> latch.acquire();</span>
<span class="source-line-no">075</span><span id="line-75"> return null;</span>
<span class="source-line-no">076</span><span id="line-76"> }</span>
<span class="source-line-no">077</span><span id="line-77"></span>
<span class="source-line-no">078</span><span id="line-78"> @Override</span>
<span class="source-line-no">079</span><span id="line-79"> protected LockState acquireLock(TestEnv env) {</span>
<span class="source-line-no">080</span><span id="line-80"> if (env.getScheduler().waitTableSharedLock(this, getTableName())) {</span>
<span class="source-line-no">081</span><span id="line-81"> return LockState.LOCK_EVENT_WAIT;</span>
<span class="source-line-no">082</span><span id="line-82"> }</span>
<span class="source-line-no">083</span><span id="line-83"> return LockState.LOCK_ACQUIRED;</span>
<span class="source-line-no">084</span><span id="line-84"> }</span>
<span class="source-line-no">085</span><span id="line-85"></span>
<span class="source-line-no">086</span><span id="line-86"> @Override</span>
<span class="source-line-no">087</span><span id="line-87"> protected void releaseLock(TestEnv env) {</span>
<span class="source-line-no">088</span><span id="line-88"> env.getScheduler().wakeTableSharedLock(this, getTableName());</span>
<span class="source-line-no">089</span><span id="line-89"> }</span>
<span class="source-line-no">090</span><span id="line-90"></span>
<span class="source-line-no">091</span><span id="line-91"> @Override</span>
<span class="source-line-no">092</span><span id="line-92"> protected boolean holdLock(TestEnv env) {</span>
<span class="source-line-no">093</span><span id="line-93"> return true;</span>
<span class="source-line-no">094</span><span id="line-94"> }</span>
<span class="source-line-no">095</span><span id="line-95"></span>
<span class="source-line-no">096</span><span id="line-96"> @Override</span>
<span class="source-line-no">097</span><span id="line-97"> public TableName getTableName() {</span>
<span class="source-line-no">098</span><span id="line-98"> return TABLE_NAME;</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"> @Override</span>
<span class="source-line-no">102</span><span id="line-102"> public TableOperationType getTableOperationType() {</span>
<span class="source-line-no">103</span><span id="line-103"> return TableOperationType.READ;</span>
<span class="source-line-no">104</span><span id="line-104"> }</span>
<span class="source-line-no">105</span><span id="line-105"> }</span>
<span class="source-line-no">106</span><span id="line-106"></span>
<span class="source-line-no">107</span><span id="line-107"> public static class TableExclusiveProcedure extends NoopProcedure&lt;TestEnv&gt;</span>
<span class="source-line-no">108</span><span id="line-108"> implements TableProcedureInterface {</span>
<span class="source-line-no">109</span><span id="line-109"></span>
<span class="source-line-no">110</span><span id="line-110"> private final Semaphore latch = new Semaphore(0);</span>
<span class="source-line-no">111</span><span id="line-111"></span>
<span class="source-line-no">112</span><span id="line-112"> @Override</span>
<span class="source-line-no">113</span><span id="line-113"> protected Procedure&lt;TestEnv&gt;[] execute(TestEnv env)</span>
<span class="source-line-no">114</span><span id="line-114"> throws ProcedureYieldException, ProcedureSuspendedException, InterruptedException {</span>
<span class="source-line-no">115</span><span id="line-115"> latch.acquire();</span>
<span class="source-line-no">116</span><span id="line-116"> return null;</span>
<span class="source-line-no">117</span><span id="line-117"> }</span>
<span class="source-line-no">118</span><span id="line-118"></span>
<span class="source-line-no">119</span><span id="line-119"> @Override</span>
<span class="source-line-no">120</span><span id="line-120"> protected LockState acquireLock(TestEnv env) {</span>
<span class="source-line-no">121</span><span id="line-121"> if (env.getScheduler().waitTableExclusiveLock(this, getTableName())) {</span>
<span class="source-line-no">122</span><span id="line-122"> return LockState.LOCK_EVENT_WAIT;</span>
<span class="source-line-no">123</span><span id="line-123"> }</span>
<span class="source-line-no">124</span><span id="line-124"> return LockState.LOCK_ACQUIRED;</span>
<span class="source-line-no">125</span><span id="line-125"> }</span>
<span class="source-line-no">126</span><span id="line-126"></span>
<span class="source-line-no">127</span><span id="line-127"> @Override</span>
<span class="source-line-no">128</span><span id="line-128"> protected void releaseLock(TestEnv env) {</span>
<span class="source-line-no">129</span><span id="line-129"> env.getScheduler().wakeTableExclusiveLock(this, getTableName());</span>
<span class="source-line-no">130</span><span id="line-130"> }</span>
<span class="source-line-no">131</span><span id="line-131"></span>
<span class="source-line-no">132</span><span id="line-132"> @Override</span>
<span class="source-line-no">133</span><span id="line-133"> protected boolean holdLock(TestEnv env) {</span>
<span class="source-line-no">134</span><span id="line-134"> return true;</span>
<span class="source-line-no">135</span><span id="line-135"> }</span>
<span class="source-line-no">136</span><span id="line-136"></span>
<span class="source-line-no">137</span><span id="line-137"> @Override</span>
<span class="source-line-no">138</span><span id="line-138"> public TableName getTableName() {</span>
<span class="source-line-no">139</span><span id="line-139"> return TABLE_NAME;</span>
<span class="source-line-no">140</span><span id="line-140"> }</span>
<span class="source-line-no">141</span><span id="line-141"></span>
<span class="source-line-no">142</span><span id="line-142"> @Override</span>
<span class="source-line-no">143</span><span id="line-143"> public TableOperationType getTableOperationType() {</span>
<span class="source-line-no">144</span><span id="line-144"> return TableOperationType.EDIT;</span>
<span class="source-line-no">145</span><span id="line-145"> }</span>
<span class="source-line-no">146</span><span id="line-146"> }</span>
<span class="source-line-no">147</span><span id="line-147"></span>
<span class="source-line-no">148</span><span id="line-148"> @AfterClass</span>
<span class="source-line-no">149</span><span id="line-149"> public static void tearDownAfterClass() throws IOException {</span>
<span class="source-line-no">150</span><span id="line-150"> UTIL.cleanupTestDir();</span>
<span class="source-line-no">151</span><span id="line-151"> }</span>
<span class="source-line-no">152</span><span id="line-152"></span>
<span class="source-line-no">153</span><span id="line-153"> private WALProcedureStore procStore;</span>
<span class="source-line-no">154</span><span id="line-154"></span>
<span class="source-line-no">155</span><span id="line-155"> private ProcedureExecutor&lt;TestEnv&gt; procExec;</span>
<span class="source-line-no">156</span><span id="line-156"></span>
<span class="source-line-no">157</span><span id="line-157"> @Rule</span>
<span class="source-line-no">158</span><span id="line-158"> public final TestName name = new TestName();</span>
<span class="source-line-no">159</span><span id="line-159"></span>
<span class="source-line-no">160</span><span id="line-160"> @Before</span>
<span class="source-line-no">161</span><span id="line-161"> public void setUp() throws IOException {</span>
<span class="source-line-no">162</span><span id="line-162"> UTIL.getConfiguration().setInt("hbase.procedure.worker.stuck.threshold.msec", 6000000);</span>
<span class="source-line-no">163</span><span id="line-163"> procStore = ProcedureTestingUtility.createWalStore(UTIL.getConfiguration(),</span>
<span class="source-line-no">164</span><span id="line-164"> UTIL.getDataTestDir(name.getMethodName()));</span>
<span class="source-line-no">165</span><span id="line-165"> procStore.start(1);</span>
<span class="source-line-no">166</span><span id="line-166"> MasterProcedureScheduler scheduler = new MasterProcedureScheduler(pid -&gt; null);</span>
<span class="source-line-no">167</span><span id="line-167"> procExec = new ProcedureExecutor&lt;&gt;(UTIL.getConfiguration(), new TestEnv(scheduler), procStore,</span>
<span class="source-line-no">168</span><span id="line-168"> scheduler);</span>
<span class="source-line-no">169</span><span id="line-169"> procExec.init(1, false);</span>
<span class="source-line-no">170</span><span id="line-170"> }</span>
<span class="source-line-no">171</span><span id="line-171"></span>
<span class="source-line-no">172</span><span id="line-172"> @After</span>
<span class="source-line-no">173</span><span id="line-173"> public void tearDown() {</span>
<span class="source-line-no">174</span><span id="line-174"> procExec.stop();</span>
<span class="source-line-no">175</span><span id="line-175"> procStore.stop(false);</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"> public static final class TableSharedProcedureWithId extends TableSharedProcedure {</span>
<span class="source-line-no">179</span><span id="line-179"></span>
<span class="source-line-no">180</span><span id="line-180"> @Override</span>
<span class="source-line-no">181</span><span id="line-181"> protected void setProcId(long procId) {</span>
<span class="source-line-no">182</span><span id="line-182"> // this is a hack to make this procedure be loaded after the procedure below as we will sort</span>
<span class="source-line-no">183</span><span id="line-183"> // the procedures by id when loading.</span>
<span class="source-line-no">184</span><span id="line-184"> super.setProcId(2L);</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"> public static final class TableExclusiveProcedureWithId extends TableExclusiveProcedure {</span>
<span class="source-line-no">189</span><span id="line-189"></span>
<span class="source-line-no">190</span><span id="line-190"> @Override</span>
<span class="source-line-no">191</span><span id="line-191"> protected void setProcId(long procId) {</span>
<span class="source-line-no">192</span><span id="line-192"> // this is a hack to make this procedure be loaded before the procedure above as we will</span>
<span class="source-line-no">193</span><span id="line-193"> // sort the procedures by id when loading.</span>
<span class="source-line-no">194</span><span id="line-194"> super.setProcId(1L);</span>
<span class="source-line-no">195</span><span id="line-195"> }</span>
<span class="source-line-no">196</span><span id="line-196"> }</span>
<span class="source-line-no">197</span><span id="line-197"></span>
<span class="source-line-no">198</span><span id="line-198"> @Test</span>
<span class="source-line-no">199</span><span id="line-199"> public void testTableProcedureDeadLockAfterRestarting() throws Exception {</span>
<span class="source-line-no">200</span><span id="line-200"> // let the shared procedure run first, but let it have a greater procId so when loading it will</span>
<span class="source-line-no">201</span><span id="line-201"> // be loaded at last.</span>
<span class="source-line-no">202</span><span id="line-202"> long procId1 = procExec.submitProcedure(new TableSharedProcedureWithId());</span>
<span class="source-line-no">203</span><span id="line-203"> long procId2 = procExec.submitProcedure(new TableExclusiveProcedureWithId());</span>
<span class="source-line-no">204</span><span id="line-204"> procExec.startWorkers();</span>
<span class="source-line-no">205</span><span id="line-205"> UTIL.waitFor(10000,</span>
<span class="source-line-no">206</span><span id="line-206"> () -&gt; ((TableSharedProcedure) procExec.getProcedure(procId1)).latch.hasQueuedThreads());</span>
<span class="source-line-no">207</span><span id="line-207"></span>
<span class="source-line-no">208</span><span id="line-208"> ProcedureTestingUtility.restart(procExec);</span>
<span class="source-line-no">209</span><span id="line-209"></span>
<span class="source-line-no">210</span><span id="line-210"> ((TableSharedProcedure) procExec.getProcedure(procId1)).latch.release();</span>
<span class="source-line-no">211</span><span id="line-211"> ((TableExclusiveProcedure) procExec.getProcedure(procId2)).latch.release();</span>
<span class="source-line-no">212</span><span id="line-212"></span>
<span class="source-line-no">213</span><span id="line-213"> UTIL.waitFor(10000, () -&gt; procExec.isFinished(procId1));</span>
<span class="source-line-no">214</span><span id="line-214"> UTIL.waitFor(10000, () -&gt; procExec.isFinished(procId2));</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"> public static final class TableShardParentProcedure extends NoopProcedure&lt;TestEnv&gt;</span>
<span class="source-line-no">218</span><span id="line-218"> implements TableProcedureInterface {</span>
<span class="source-line-no">219</span><span id="line-219"></span>
<span class="source-line-no">220</span><span id="line-220"> private boolean scheduled;</span>
<span class="source-line-no">221</span><span id="line-221"></span>
<span class="source-line-no">222</span><span id="line-222"> @Override</span>
<span class="source-line-no">223</span><span id="line-223"> protected Procedure&lt;TestEnv&gt;[] execute(TestEnv env)</span>
<span class="source-line-no">224</span><span id="line-224"> throws ProcedureYieldException, ProcedureSuspendedException, InterruptedException {</span>
<span class="source-line-no">225</span><span id="line-225"> if (!scheduled) {</span>
<span class="source-line-no">226</span><span id="line-226"> scheduled = true;</span>
<span class="source-line-no">227</span><span id="line-227"> return new Procedure[] { new TableSharedProcedure() };</span>
<span class="source-line-no">228</span><span id="line-228"> }</span>
<span class="source-line-no">229</span><span id="line-229"> return null;</span>
<span class="source-line-no">230</span><span id="line-230"> }</span>
<span class="source-line-no">231</span><span id="line-231"></span>
<span class="source-line-no">232</span><span id="line-232"> @Override</span>
<span class="source-line-no">233</span><span id="line-233"> protected LockState acquireLock(TestEnv env) {</span>
<span class="source-line-no">234</span><span id="line-234"> if (env.getScheduler().waitTableSharedLock(this, getTableName())) {</span>
<span class="source-line-no">235</span><span id="line-235"> return LockState.LOCK_EVENT_WAIT;</span>
<span class="source-line-no">236</span><span id="line-236"> }</span>
<span class="source-line-no">237</span><span id="line-237"> return LockState.LOCK_ACQUIRED;</span>
<span class="source-line-no">238</span><span id="line-238"> }</span>
<span class="source-line-no">239</span><span id="line-239"></span>
<span class="source-line-no">240</span><span id="line-240"> @Override</span>
<span class="source-line-no">241</span><span id="line-241"> protected void releaseLock(TestEnv env) {</span>
<span class="source-line-no">242</span><span id="line-242"> env.getScheduler().wakeTableSharedLock(this, getTableName());</span>
<span class="source-line-no">243</span><span id="line-243"> }</span>
<span class="source-line-no">244</span><span id="line-244"></span>
<span class="source-line-no">245</span><span id="line-245"> @Override</span>
<span class="source-line-no">246</span><span id="line-246"> protected boolean holdLock(TestEnv env) {</span>
<span class="source-line-no">247</span><span id="line-247"> return true;</span>
<span class="source-line-no">248</span><span id="line-248"> }</span>
<span class="source-line-no">249</span><span id="line-249"></span>
<span class="source-line-no">250</span><span id="line-250"> @Override</span>
<span class="source-line-no">251</span><span id="line-251"> public TableName getTableName() {</span>
<span class="source-line-no">252</span><span id="line-252"> return TABLE_NAME;</span>
<span class="source-line-no">253</span><span id="line-253"> }</span>
<span class="source-line-no">254</span><span id="line-254"></span>
<span class="source-line-no">255</span><span id="line-255"> @Override</span>
<span class="source-line-no">256</span><span id="line-256"> public TableOperationType getTableOperationType() {</span>
<span class="source-line-no">257</span><span id="line-257"> return TableOperationType.READ;</span>
<span class="source-line-no">258</span><span id="line-258"> }</span>
<span class="source-line-no">259</span><span id="line-259"> }</span>
<span class="source-line-no">260</span><span id="line-260"></span>
<span class="source-line-no">261</span><span id="line-261"> @Test</span>
<span class="source-line-no">262</span><span id="line-262"> public void testTableProcedureSubProcedureDeadLock() throws Exception {</span>
<span class="source-line-no">263</span><span id="line-263"> // the shared procedure will also schedule a shared procedure, but after the exclusive procedure</span>
<span class="source-line-no">264</span><span id="line-264"> long procId1 = procExec.submitProcedure(new TableShardParentProcedure());</span>
<span class="source-line-no">265</span><span id="line-265"> long procId2 = procExec.submitProcedure(new TableExclusiveProcedure());</span>
<span class="source-line-no">266</span><span id="line-266"> procExec.startWorkers();</span>
<span class="source-line-no">267</span><span id="line-267"> UTIL.waitFor(10000,</span>
<span class="source-line-no">268</span><span id="line-268"> () -&gt; procExec.getProcedures().stream().anyMatch(p -&gt; p instanceof TableSharedProcedure));</span>
<span class="source-line-no">269</span><span id="line-269"> procExec.getProcedures().stream().filter(p -&gt; p instanceof TableSharedProcedure)</span>
<span class="source-line-no">270</span><span id="line-270"> .map(p -&gt; (TableSharedProcedure) p).forEach(p -&gt; p.latch.release());</span>
<span class="source-line-no">271</span><span id="line-271"> ((TableExclusiveProcedure) procExec.getProcedure(procId2)).latch.release();</span>
<span class="source-line-no">272</span><span id="line-272"></span>
<span class="source-line-no">273</span><span id="line-273"> UTIL.waitFor(10000, () -&gt; procExec.isFinished(procId1));</span>
<span class="source-line-no">274</span><span id="line-274"> UTIL.waitFor(10000, () -&gt; procExec.isFinished(procId2));</span>
<span class="source-line-no">275</span><span id="line-275"> }</span>
<span class="source-line-no">276</span><span id="line-276">}</span>
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