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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.procedure2;<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><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.concurrent.Semaphore;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.concurrent.TimeUnit;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.conf.Configuration;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HBaseCommonTestingUtil;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility.NoopProcedure;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.procedure2.store.NoopProcedureStore;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.junit.After;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.junit.Before;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.junit.ClassRule;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.junit.Test;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.junit.experimental.categories.Category;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.slf4j.Logger;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.slf4j.LoggerFactory;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span>@Category({ MasterTests.class, SmallTests.class })<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>public class TestProcedureExecutor {<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> @ClassRule<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> HBaseClassTestRule.forClass(TestProcedureExecutor.class);<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private static final Logger LOG = LoggerFactory.getLogger(TestProcedureExecutor.class);<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> private TestProcEnv procEnv;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> private NoopProcedureStore procStore;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> private ProcedureExecutor<TestProcEnv> procExecutor;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private HBaseCommonTestingUtil htu;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> @Before<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> public void setUp() throws Exception {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> htu = new HBaseCommonTestingUtil();<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> // NOTE: The executor will be created by each test<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> procEnv = new TestProcEnv();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> procStore = new NoopProcedureStore();<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> procStore.start(1);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> @After<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> public void tearDown() throws Exception {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> procExecutor.stop();<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> procStore.stop(false);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> procExecutor.join();<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> }<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private void createNewExecutor(final Configuration conf, final int numThreads) throws Exception {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> procExecutor = new ProcedureExecutor<>(conf, procEnv, procStore);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> ProcedureTestingUtility.initAndStartWorkers(procExecutor, numThreads, true);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> @Test<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public void testWorkerStuck() throws Exception {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> // replace the executor<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> final Configuration conf = new Configuration(htu.getConfiguration());<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> conf.setFloat("hbase.procedure.worker.add.stuck.percentage", 0.5f);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> conf.setInt("hbase.procedure.worker.monitor.interval.msec", 500);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> conf.setInt("hbase.procedure.worker.stuck.threshold.msec", 750);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> final int NUM_THREADS = 2;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> createNewExecutor(conf, NUM_THREADS);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> Semaphore latch1 = new Semaphore(2);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> latch1.acquire(2);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> BusyWaitProcedure busyProc1 = new BusyWaitProcedure(latch1);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> Semaphore latch2 = new Semaphore(2);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> latch2.acquire(2);<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> BusyWaitProcedure busyProc2 = new BusyWaitProcedure(latch2);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> long busyProcId1 = procExecutor.submitProcedure(busyProc1);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> long busyProcId2 = procExecutor.submitProcedure(busyProc2);<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> long otherProcId = procExecutor.submitProcedure(new NoopProcedure());<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> // wait until a new worker is being created<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> int threads1 = waitThreadCount(NUM_THREADS + 1);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> LOG.info("new threads got created: " + (threads1 - NUM_THREADS));<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> assertEquals(NUM_THREADS + 1, threads1);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> ProcedureTestingUtility.waitProcedure(procExecutor, otherProcId);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> assertEquals(true, procExecutor.isFinished(otherProcId));<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> ProcedureTestingUtility.assertProcNotFailed(procExecutor, otherProcId);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> assertEquals(true, procExecutor.isRunning());<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> assertEquals(false, procExecutor.isFinished(busyProcId1));<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> assertEquals(false, procExecutor.isFinished(busyProcId2));<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> // terminate the busy procedures<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> latch1.release();<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> latch2.release();<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> LOG.info("set keep alive and wait threads being removed");<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> procExecutor.setKeepAliveTime(500L, TimeUnit.MILLISECONDS);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> int threads2 = waitThreadCount(NUM_THREADS);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> LOG.info("threads got removed: " + (threads1 - threads2));<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> assertEquals(NUM_THREADS, threads2);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> // terminate the busy procedures<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> latch1.release();<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> latch2.release();<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // wait for all procs to complete<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> ProcedureTestingUtility.waitProcedure(procExecutor, busyProcId1);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> ProcedureTestingUtility.waitProcedure(procExecutor, busyProcId2);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> ProcedureTestingUtility.assertProcNotFailed(procExecutor, busyProcId1);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> ProcedureTestingUtility.assertProcNotFailed(procExecutor, busyProcId2);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> @Test<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> public void testSubmitBatch() throws Exception {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> Procedure[] procs = new Procedure[5];<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> for (int i = 0; i < procs.length; ++i) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> procs[i] = new NoopProcedure<TestProcEnv>();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> // submit procedures<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> createNewExecutor(htu.getConfiguration(), 3);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> procExecutor.submitProcedures(procs);<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> // wait for procs to be completed<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> for (int i = 0; i < procs.length; ++i) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> final long procId = procs[i].getProcId();<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> ProcedureTestingUtility.waitProcedure(procExecutor, procId);<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> ProcedureTestingUtility.assertProcNotFailed(procExecutor, procId);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> private int waitThreadCount(final int expectedThreads) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> while (procExecutor.isRunning()) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> if (procExecutor.getWorkerThreadCount() == expectedThreads) {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> break;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> LOG.debug("waiting for thread count=" + expectedThreads + " current="<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> + procExecutor.getWorkerThreadCount());<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> Threads.sleepWithoutInterrupt(250);<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> return procExecutor.getWorkerThreadCount();<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> public static class BusyWaitProcedure extends NoopProcedure<TestProcEnv> {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> private final Semaphore latch;<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> public BusyWaitProcedure(final Semaphore latch) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> this.latch = latch;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> @Override<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> protected Procedure[] execute(final TestProcEnv env) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> try {<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> LOG.info("worker started " + this);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> if (!latch.tryAcquire(1, 30, TimeUnit.SECONDS)) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> throw new Exception("waited too long");<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> LOG.info("worker step 2 " + this);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> if (!latch.tryAcquire(1, 30, TimeUnit.SECONDS)) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> throw new Exception("waited too long");<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> } catch (Exception e) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> LOG.error("got unexpected exception", e);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> setFailure("BusyWaitProcedure", e);<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> return null;<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> private static class TestProcEnv {<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> |
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