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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.procedure2;</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.assertTrue;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Arrays;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.concurrent.CountDownLatch;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.Exchanger;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.fs.FSDataInputStream;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.fs.FSDataOutputStream;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.fs.FileStatus;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HBaseCommonTestingUtil;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.testclassification.MasterTests;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.testclassification.SmallTests;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.junit.BeforeClass;</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">import org.slf4j.Logger;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hbase.thirdparty.com.google.common.io.ByteStreams;</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47">@Category({ MasterTests.class, SmallTests.class })</span> |
| <span class="source-line-no">048</span><span id="line-48">public class TestProcedureCleanup {</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> @ClassRule</span> |
| <span class="source-line-no">051</span><span id="line-51"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">052</span><span id="line-52"> HBaseClassTestRule.forClass(TestProcedureCleanup.class);</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 Logger LOG = LoggerFactory.getLogger(TestProcedureCleanup.class);</span> |
| <span class="source-line-no">055</span><span id="line-55"></span> |
| <span class="source-line-no">056</span><span id="line-56"> private static final int PROCEDURE_EXECUTOR_SLOTS = 2;</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> private static WALProcedureStore procStore;</span> |
| <span class="source-line-no">059</span><span id="line-59"></span> |
| <span class="source-line-no">060</span><span id="line-60"> private static ProcedureExecutor<Void> procExecutor;</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> private static HBaseCommonTestingUtil htu;</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> private static FileSystem fs;</span> |
| <span class="source-line-no">065</span><span id="line-65"> private static Path testDir;</span> |
| <span class="source-line-no">066</span><span id="line-66"> private static Path logDir;</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> @Rule</span> |
| <span class="source-line-no">069</span><span id="line-69"> public final TestName name = new TestName();</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 void createProcExecutor() throws Exception {</span> |
| <span class="source-line-no">072</span><span id="line-72"> logDir = new Path(testDir, name.getMethodName());</span> |
| <span class="source-line-no">073</span><span id="line-73"> procStore = ProcedureTestingUtility.createWalStore(htu.getConfiguration(), logDir);</span> |
| <span class="source-line-no">074</span><span id="line-74"> procExecutor = new ProcedureExecutor<>(htu.getConfiguration(), null, procStore);</span> |
| <span class="source-line-no">075</span><span id="line-75"> procStore.start(PROCEDURE_EXECUTOR_SLOTS);</span> |
| <span class="source-line-no">076</span><span id="line-76"> ProcedureTestingUtility.initAndStartWorkers(procExecutor, PROCEDURE_EXECUTOR_SLOTS, true, true);</span> |
| <span class="source-line-no">077</span><span id="line-77"> }</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> @BeforeClass</span> |
| <span class="source-line-no">080</span><span id="line-80"> public static void setUp() throws Exception {</span> |
| <span class="source-line-no">081</span><span id="line-81"> htu = new HBaseCommonTestingUtil();</span> |
| <span class="source-line-no">082</span><span id="line-82"> htu.getConfiguration().setBoolean(WALProcedureStore.EXEC_WAL_CLEANUP_ON_LOAD_CONF_KEY, true);</span> |
| <span class="source-line-no">083</span><span id="line-83"> // NOTE: The executor will be created by each test</span> |
| <span class="source-line-no">084</span><span id="line-84"> testDir = htu.getDataTestDir();</span> |
| <span class="source-line-no">085</span><span id="line-85"> fs = testDir.getFileSystem(htu.getConfiguration());</span> |
| <span class="source-line-no">086</span><span id="line-86"> assertTrue(testDir.depth() > 1);</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88"></span> |
| <span class="source-line-no">089</span><span id="line-89"> @Test</span> |
| <span class="source-line-no">090</span><span id="line-90"> public void testProcedureShouldNotCleanOnLoad() throws Exception {</span> |
| <span class="source-line-no">091</span><span id="line-91"> createProcExecutor();</span> |
| <span class="source-line-no">092</span><span id="line-92"> final RootProcedure proc = new RootProcedure();</span> |
| <span class="source-line-no">093</span><span id="line-93"> long rootProc = procExecutor.submitProcedure(proc);</span> |
| <span class="source-line-no">094</span><span id="line-94"> LOG.info("Begin to execute " + rootProc);</span> |
| <span class="source-line-no">095</span><span id="line-95"> // wait until the child procedure arrival</span> |
| <span class="source-line-no">096</span><span id="line-96"> htu.waitFor(10000, () -> procExecutor.getProcedures().size() >= 2);</span> |
| <span class="source-line-no">097</span><span id="line-97"> SuspendProcedure suspendProcedure = (SuspendProcedure) procExecutor.getProcedures().get(1);</span> |
| <span class="source-line-no">098</span><span id="line-98"> // wait until the suspendProcedure executed</span> |
| <span class="source-line-no">099</span><span id="line-99"> suspendProcedure.latch.countDown();</span> |
| <span class="source-line-no">100</span><span id="line-100"> Thread.sleep(100);</span> |
| <span class="source-line-no">101</span><span id="line-101"> // roll the procedure log</span> |
| <span class="source-line-no">102</span><span id="line-102"> LOG.info("Begin to roll log ");</span> |
| <span class="source-line-no">103</span><span id="line-103"> procStore.rollWriterForTesting();</span> |
| <span class="source-line-no">104</span><span id="line-104"> LOG.info("finish to roll log ");</span> |
| <span class="source-line-no">105</span><span id="line-105"> Thread.sleep(500);</span> |
| <span class="source-line-no">106</span><span id="line-106"> LOG.info("begin to restart1 ");</span> |
| <span class="source-line-no">107</span><span id="line-107"> ProcedureTestingUtility.restart(procExecutor, true);</span> |
| <span class="source-line-no">108</span><span id="line-108"> LOG.info("finish to restart1 ");</span> |
| <span class="source-line-no">109</span><span id="line-109"> assertTrue(procExecutor.getProcedure(rootProc) != null);</span> |
| <span class="source-line-no">110</span><span id="line-110"> Thread.sleep(500);</span> |
| <span class="source-line-no">111</span><span id="line-111"> LOG.info("begin to restart2 ");</span> |
| <span class="source-line-no">112</span><span id="line-112"> ProcedureTestingUtility.restart(procExecutor, true);</span> |
| <span class="source-line-no">113</span><span id="line-113"> LOG.info("finish to restart2 ");</span> |
| <span class="source-line-no">114</span><span id="line-114"> assertTrue(procExecutor.getProcedure(rootProc) != null);</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"> @Test</span> |
| <span class="source-line-no">118</span><span id="line-118"> public void testProcedureUpdatedShouldClean() throws Exception {</span> |
| <span class="source-line-no">119</span><span id="line-119"> createProcExecutor();</span> |
| <span class="source-line-no">120</span><span id="line-120"> SuspendProcedure suspendProcedure = new SuspendProcedure();</span> |
| <span class="source-line-no">121</span><span id="line-121"> long suspendProc = procExecutor.submitProcedure(suspendProcedure);</span> |
| <span class="source-line-no">122</span><span id="line-122"> LOG.info("Begin to execute " + suspendProc);</span> |
| <span class="source-line-no">123</span><span id="line-123"> suspendProcedure.latch.countDown();</span> |
| <span class="source-line-no">124</span><span id="line-124"> Thread.sleep(500);</span> |
| <span class="source-line-no">125</span><span id="line-125"> LOG.info("begin to restart1 ");</span> |
| <span class="source-line-no">126</span><span id="line-126"> ProcedureTestingUtility.restart(procExecutor, true);</span> |
| <span class="source-line-no">127</span><span id="line-127"> LOG.info("finish to restart1 ");</span> |
| <span class="source-line-no">128</span><span id="line-128"> htu.waitFor(10000, () -> procExecutor.getProcedure(suspendProc) != null);</span> |
| <span class="source-line-no">129</span><span id="line-129"> // Wait until the suspendProc executed after restart</span> |
| <span class="source-line-no">130</span><span id="line-130"> suspendProcedure = (SuspendProcedure) procExecutor.getProcedure(suspendProc);</span> |
| <span class="source-line-no">131</span><span id="line-131"> suspendProcedure.latch.countDown();</span> |
| <span class="source-line-no">132</span><span id="line-132"> Thread.sleep(500);</span> |
| <span class="source-line-no">133</span><span id="line-133"> // Should be 1 log since the suspendProcedure is updated in the new log</span> |
| <span class="source-line-no">134</span><span id="line-134"> assertTrue(procStore.getActiveLogs().size() == 1);</span> |
| <span class="source-line-no">135</span><span id="line-135"> // restart procExecutor</span> |
| <span class="source-line-no">136</span><span id="line-136"> LOG.info("begin to restart2");</span> |
| <span class="source-line-no">137</span><span id="line-137"> // Restart the executor but do not start the workers.</span> |
| <span class="source-line-no">138</span><span id="line-138"> // Otherwise, the suspendProcedure will soon be executed and the oldest log</span> |
| <span class="source-line-no">139</span><span id="line-139"> // will be cleaned, leaving only the newest log.</span> |
| <span class="source-line-no">140</span><span id="line-140"> ProcedureTestingUtility.restart(procExecutor, true, false);</span> |
| <span class="source-line-no">141</span><span id="line-141"> LOG.info("finish to restart2");</span> |
| <span class="source-line-no">142</span><span id="line-142"> // There should be two active logs</span> |
| <span class="source-line-no">143</span><span id="line-143"> assertTrue(procStore.getActiveLogs().size() == 2);</span> |
| <span class="source-line-no">144</span><span id="line-144"> procExecutor.startWorkers();</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"> @Test</span> |
| <span class="source-line-no">149</span><span id="line-149"> public void testProcedureDeletedShouldClean() throws Exception {</span> |
| <span class="source-line-no">150</span><span id="line-150"> createProcExecutor();</span> |
| <span class="source-line-no">151</span><span id="line-151"> WaitProcedure waitProcedure = new WaitProcedure();</span> |
| <span class="source-line-no">152</span><span id="line-152"> long waitProce = procExecutor.submitProcedure(waitProcedure);</span> |
| <span class="source-line-no">153</span><span id="line-153"> LOG.info("Begin to execute " + waitProce);</span> |
| <span class="source-line-no">154</span><span id="line-154"> Thread.sleep(500);</span> |
| <span class="source-line-no">155</span><span id="line-155"> LOG.info("begin to restart1 ");</span> |
| <span class="source-line-no">156</span><span id="line-156"> ProcedureTestingUtility.restart(procExecutor, true);</span> |
| <span class="source-line-no">157</span><span id="line-157"> LOG.info("finish to restart1 ");</span> |
| <span class="source-line-no">158</span><span id="line-158"> htu.waitFor(10000, () -> procExecutor.getProcedure(waitProce) != null);</span> |
| <span class="source-line-no">159</span><span id="line-159"> // Wait until the suspendProc executed after restart</span> |
| <span class="source-line-no">160</span><span id="line-160"> waitProcedure = (WaitProcedure) procExecutor.getProcedure(waitProce);</span> |
| <span class="source-line-no">161</span><span id="line-161"> waitProcedure.latch.countDown();</span> |
| <span class="source-line-no">162</span><span id="line-162"> Thread.sleep(500);</span> |
| <span class="source-line-no">163</span><span id="line-163"> // Should be 1 log since the suspendProcedure is updated in the new log</span> |
| <span class="source-line-no">164</span><span id="line-164"> assertTrue(procStore.getActiveLogs().size() == 1);</span> |
| <span class="source-line-no">165</span><span id="line-165"> // restart procExecutor</span> |
| <span class="source-line-no">166</span><span id="line-166"> LOG.info("begin to restart2");</span> |
| <span class="source-line-no">167</span><span id="line-167"> // Restart the executor but do not start the workers.</span> |
| <span class="source-line-no">168</span><span id="line-168"> // Otherwise, the suspendProcedure will soon be executed and the oldest log</span> |
| <span class="source-line-no">169</span><span id="line-169"> // will be cleaned, leaving only the newest log.</span> |
| <span class="source-line-no">170</span><span id="line-170"> ProcedureTestingUtility.restart(procExecutor, true, false);</span> |
| <span class="source-line-no">171</span><span id="line-171"> LOG.info("finish to restart2");</span> |
| <span class="source-line-no">172</span><span id="line-172"> // There should be two active logs</span> |
| <span class="source-line-no">173</span><span id="line-173"> assertTrue(procStore.getActiveLogs().size() == 2);</span> |
| <span class="source-line-no">174</span><span id="line-174"> procExecutor.startWorkers();</span> |
| <span class="source-line-no">175</span><span id="line-175"> }</span> |
| <span class="source-line-no">176</span><span id="line-176"></span> |
| <span class="source-line-no">177</span><span id="line-177"> private void corrupt(FileStatus file) throws IOException {</span> |
| <span class="source-line-no">178</span><span id="line-178"> LOG.info("Corrupt " + file);</span> |
| <span class="source-line-no">179</span><span id="line-179"> Path tmpFile = file.getPath().suffix(".tmp");</span> |
| <span class="source-line-no">180</span><span id="line-180"> // remove the last byte to make the trailer corrupted</span> |
| <span class="source-line-no">181</span><span id="line-181"> try (FSDataInputStream in = fs.open(file.getPath());</span> |
| <span class="source-line-no">182</span><span id="line-182"> FSDataOutputStream out = fs.create(tmpFile)) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> ByteStreams.copy(ByteStreams.limit(in, file.getLen() - 1), out);</span> |
| <span class="source-line-no">184</span><span id="line-184"> }</span> |
| <span class="source-line-no">185</span><span id="line-185"> fs.delete(file.getPath(), false);</span> |
| <span class="source-line-no">186</span><span id="line-186"> fs.rename(tmpFile, file.getPath());</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"> public static final class ExchangeProcedure extends ProcedureTestingUtility.NoopProcedure<Void> {</span> |
| <span class="source-line-no">190</span><span id="line-190"></span> |
| <span class="source-line-no">191</span><span id="line-191"> private final Exchanger<Boolean> exchanger = new Exchanger<>();</span> |
| <span class="source-line-no">192</span><span id="line-192"></span> |
| <span class="source-line-no">193</span><span id="line-193"> @SuppressWarnings("unchecked")</span> |
| <span class="source-line-no">194</span><span id="line-194"> @Override</span> |
| <span class="source-line-no">195</span><span id="line-195"> protected Procedure<Void>[] execute(Void env)</span> |
| <span class="source-line-no">196</span><span id="line-196"> throws ProcedureYieldException, ProcedureSuspendedException, InterruptedException {</span> |
| <span class="source-line-no">197</span><span id="line-197"> if (exchanger.exchange(Boolean.TRUE)) {</span> |
| <span class="source-line-no">198</span><span id="line-198"> return new Procedure[] { this };</span> |
| <span class="source-line-no">199</span><span id="line-199"> } else {</span> |
| <span class="source-line-no">200</span><span id="line-200"> return null;</span> |
| <span class="source-line-no">201</span><span id="line-201"> }</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"> }</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> @Test</span> |
| <span class="source-line-no">206</span><span id="line-206"> public void testResetDeleteWhenBuildingHoldingCleanupTracker() throws Exception {</span> |
| <span class="source-line-no">207</span><span id="line-207"> createProcExecutor();</span> |
| <span class="source-line-no">208</span><span id="line-208"> ExchangeProcedure proc1 = new ExchangeProcedure();</span> |
| <span class="source-line-no">209</span><span id="line-209"> ExchangeProcedure proc2 = new ExchangeProcedure();</span> |
| <span class="source-line-no">210</span><span id="line-210"> procExecutor.submitProcedure(proc1);</span> |
| <span class="source-line-no">211</span><span id="line-211"> long procId2 = procExecutor.submitProcedure(proc2);</span> |
| <span class="source-line-no">212</span><span id="line-212"> Thread.sleep(500);</span> |
| <span class="source-line-no">213</span><span id="line-213"> procStore.rollWriterForTesting();</span> |
| <span class="source-line-no">214</span><span id="line-214"> proc1.exchanger.exchange(Boolean.TRUE);</span> |
| <span class="source-line-no">215</span><span id="line-215"> Thread.sleep(500);</span> |
| <span class="source-line-no">216</span><span id="line-216"></span> |
| <span class="source-line-no">217</span><span id="line-217"> FileStatus[] walFiles = fs.listStatus(logDir);</span> |
| <span class="source-line-no">218</span><span id="line-218"> Arrays.sort(walFiles, (f1, f2) -> f1.getPath().getName().compareTo(f2.getPath().getName()));</span> |
| <span class="source-line-no">219</span><span id="line-219"> // corrupt the first proc wal file, so we will have a partial tracker for it after restarting</span> |
| <span class="source-line-no">220</span><span id="line-220"> corrupt(walFiles[0]);</span> |
| <span class="source-line-no">221</span><span id="line-221"> ProcedureTestingUtility.restart(procExecutor, false, true);</span> |
| <span class="source-line-no">222</span><span id="line-222"> // also update proc2, which means that all the procedures in the first proc wal have been</span> |
| <span class="source-line-no">223</span><span id="line-223"> // updated and it should be deleted.</span> |
| <span class="source-line-no">224</span><span id="line-224"> proc2 = (ExchangeProcedure) procExecutor.getProcedure(procId2);</span> |
| <span class="source-line-no">225</span><span id="line-225"> proc2.exchanger.exchange(Boolean.TRUE);</span> |
| <span class="source-line-no">226</span><span id="line-226"> htu.waitFor(10000, () -> !fs.exists(walFiles[0].getPath()));</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228"></span> |
| <span class="source-line-no">229</span><span id="line-229"> public static class WaitProcedure extends ProcedureTestingUtility.NoopProcedure<Void> {</span> |
| <span class="source-line-no">230</span><span id="line-230"> public WaitProcedure() {</span> |
| <span class="source-line-no">231</span><span id="line-231"> super();</span> |
| <span class="source-line-no">232</span><span id="line-232"> }</span> |
| <span class="source-line-no">233</span><span id="line-233"></span> |
| <span class="source-line-no">234</span><span id="line-234"> private CountDownLatch latch = new CountDownLatch(1);</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> @Override</span> |
| <span class="source-line-no">237</span><span id="line-237"> protected Procedure<Void>[] execute(Void env) throws ProcedureSuspendedException {</span> |
| <span class="source-line-no">238</span><span id="line-238"> // Always wait here</span> |
| <span class="source-line-no">239</span><span id="line-239"> LOG.info("wait here");</span> |
| <span class="source-line-no">240</span><span id="line-240"> try {</span> |
| <span class="source-line-no">241</span><span id="line-241"> latch.await();</span> |
| <span class="source-line-no">242</span><span id="line-242"> } catch (Throwable t) {</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"> LOG.info("finished");</span> |
| <span class="source-line-no">246</span><span id="line-246"> return null;</span> |
| <span class="source-line-no">247</span><span id="line-247"> }</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"> public static class SuspendProcedure extends ProcedureTestingUtility.NoopProcedure<Void> {</span> |
| <span class="source-line-no">251</span><span id="line-251"> public SuspendProcedure() {</span> |
| <span class="source-line-no">252</span><span id="line-252"> super();</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"> private CountDownLatch latch = new CountDownLatch(1);</span> |
| <span class="source-line-no">256</span><span id="line-256"></span> |
| <span class="source-line-no">257</span><span id="line-257"> @Override</span> |
| <span class="source-line-no">258</span><span id="line-258"> protected Procedure<Void>[] execute(Void env) throws ProcedureSuspendedException {</span> |
| <span class="source-line-no">259</span><span id="line-259"> // Always suspend the procedure</span> |
| <span class="source-line-no">260</span><span id="line-260"> LOG.info("suspend here");</span> |
| <span class="source-line-no">261</span><span id="line-261"> latch.countDown();</span> |
| <span class="source-line-no">262</span><span id="line-262"> throw new ProcedureSuspendedException();</span> |
| <span class="source-line-no">263</span><span id="line-263"> }</span> |
| <span class="source-line-no">264</span><span id="line-264"> }</span> |
| <span class="source-line-no">265</span><span id="line-265"></span> |
| <span class="source-line-no">266</span><span id="line-266"> public static class RootProcedure extends ProcedureTestingUtility.NoopProcedure<Void> {</span> |
| <span class="source-line-no">267</span><span id="line-267"> private boolean childSpwaned = false;</span> |
| <span class="source-line-no">268</span><span id="line-268"></span> |
| <span class="source-line-no">269</span><span id="line-269"> public RootProcedure() {</span> |
| <span class="source-line-no">270</span><span id="line-270"> super();</span> |
| <span class="source-line-no">271</span><span id="line-271"> }</span> |
| <span class="source-line-no">272</span><span id="line-272"></span> |
| <span class="source-line-no">273</span><span id="line-273"> @Override</span> |
| <span class="source-line-no">274</span><span id="line-274"> protected Procedure<Void>[] execute(Void env) throws ProcedureSuspendedException {</span> |
| <span class="source-line-no">275</span><span id="line-275"> if (!childSpwaned) {</span> |
| <span class="source-line-no">276</span><span id="line-276"> childSpwaned = true;</span> |
| <span class="source-line-no">277</span><span id="line-277"> return new Procedure[] { new SuspendProcedure() };</span> |
| <span class="source-line-no">278</span><span id="line-278"> } else {</span> |
| <span class="source-line-no">279</span><span id="line-279"> return null;</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</span> |
| <span class="source-line-no">281</span><span id="line-281"> }</span> |
| <span class="source-line-no">282</span><span id="line-282"> }</span> |
| <span class="source-line-no">283</span><span id="line-283">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
