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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 java.io.IOException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.concurrent.ConcurrentSkipListSet;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility.NoopProcedure;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.junit.After;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.junit.Before;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.junit.ClassRule;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.junit.Test;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.junit.experimental.categories.Category;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.slf4j.Logger;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.slf4j.LoggerFactory;<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>@Category({ MasterTests.class, SmallTests.class })<a name="line.37"></a>
<span class="sourceLineNo">038</span>public class TestProcedureSchedulerConcurrency {<a name="line.38"></a>
<span class="sourceLineNo">039</span> @ClassRule<a name="line.39"></a>
<span class="sourceLineNo">040</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.40"></a>
<span class="sourceLineNo">041</span> HBaseClassTestRule.forClass(TestProcedureSchedulerConcurrency.class);<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span> private static final Logger LOG = LoggerFactory.getLogger(TestProcedureEvents.class);<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> private SimpleProcedureScheduler procSched;<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span> @Before<a name="line.47"></a>
<span class="sourceLineNo">048</span> public void setUp() throws IOException {<a name="line.48"></a>
<span class="sourceLineNo">049</span> procSched = new SimpleProcedureScheduler();<a name="line.49"></a>
<span class="sourceLineNo">050</span> procSched.start();<a name="line.50"></a>
<span class="sourceLineNo">051</span> }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span> @After<a name="line.53"></a>
<span class="sourceLineNo">054</span> public void tearDown() throws IOException {<a name="line.54"></a>
<span class="sourceLineNo">055</span> procSched.stop();<a name="line.55"></a>
<span class="sourceLineNo">056</span> }<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span> @Test<a name="line.58"></a>
<span class="sourceLineNo">059</span> public void testConcurrentWaitWake() throws Exception {<a name="line.59"></a>
<span class="sourceLineNo">060</span> testConcurrentWaitWake(false);<a name="line.60"></a>
<span class="sourceLineNo">061</span> }<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> @Test<a name="line.63"></a>
<span class="sourceLineNo">064</span> public void testConcurrentWaitWakeBatch() throws Exception {<a name="line.64"></a>
<span class="sourceLineNo">065</span> testConcurrentWaitWake(true);<a name="line.65"></a>
<span class="sourceLineNo">066</span> }<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span> private void testConcurrentWaitWake(final boolean useWakeBatch) throws Exception {<a name="line.68"></a>
<span class="sourceLineNo">069</span> final int WAIT_THRESHOLD = 2500;<a name="line.69"></a>
<span class="sourceLineNo">070</span> final int NPROCS = 20;<a name="line.70"></a>
<span class="sourceLineNo">071</span> final int NRUNS = 500;<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span> final ProcedureScheduler sched = procSched;<a name="line.73"></a>
<span class="sourceLineNo">074</span> for (long i = 0; i &lt; NPROCS; ++i) {<a name="line.74"></a>
<span class="sourceLineNo">075</span> sched.addBack(new TestProcedureWithEvent(i));<a name="line.75"></a>
<span class="sourceLineNo">076</span> }<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> final Thread[] threads = new Thread[4];<a name="line.78"></a>
<span class="sourceLineNo">079</span> final AtomicInteger waitCount = new AtomicInteger(0);<a name="line.79"></a>
<span class="sourceLineNo">080</span> final AtomicInteger wakeCount = new AtomicInteger(0);<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span> final ConcurrentSkipListSet&lt;TestProcedureWithEvent&gt; waitQueue = new ConcurrentSkipListSet&lt;&gt;();<a name="line.82"></a>
<span class="sourceLineNo">083</span> threads[0] = new Thread() {<a name="line.83"></a>
<span class="sourceLineNo">084</span> @Override<a name="line.84"></a>
<span class="sourceLineNo">085</span> public void run() {<a name="line.85"></a>
<span class="sourceLineNo">086</span> long lastUpdate = 0;<a name="line.86"></a>
<span class="sourceLineNo">087</span> while (true) {<a name="line.87"></a>
<span class="sourceLineNo">088</span> final int oldWakeCount = wakeCount.get();<a name="line.88"></a>
<span class="sourceLineNo">089</span> if (useWakeBatch) {<a name="line.89"></a>
<span class="sourceLineNo">090</span> ProcedureEvent[] ev = new ProcedureEvent[waitQueue.size()];<a name="line.90"></a>
<span class="sourceLineNo">091</span> for (int i = 0; i &lt; ev.length; ++i) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> ev[i] = waitQueue.pollFirst().getEvent();<a name="line.92"></a>
<span class="sourceLineNo">093</span> LOG.debug("WAKE BATCH " + ev[i] + " total=" + wakeCount.get());<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span> ProcedureEvent.wakeEvents((AbstractProcedureScheduler) sched, ev);<a name="line.95"></a>
<span class="sourceLineNo">096</span> wakeCount.addAndGet(ev.length);<a name="line.96"></a>
<span class="sourceLineNo">097</span> } else {<a name="line.97"></a>
<span class="sourceLineNo">098</span> int size = waitQueue.size();<a name="line.98"></a>
<span class="sourceLineNo">099</span> while (size-- &gt; 0) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> ProcedureEvent ev = waitQueue.pollFirst().getEvent();<a name="line.100"></a>
<span class="sourceLineNo">101</span> ev.wake(procSched);<a name="line.101"></a>
<span class="sourceLineNo">102</span> LOG.debug("WAKE " + ev + " total=" + wakeCount.get());<a name="line.102"></a>
<span class="sourceLineNo">103</span> wakeCount.incrementAndGet();<a name="line.103"></a>
<span class="sourceLineNo">104</span> }<a name="line.104"></a>
<span class="sourceLineNo">105</span> }<a name="line.105"></a>
<span class="sourceLineNo">106</span> if (wakeCount.get() != oldWakeCount) {<a name="line.106"></a>
<span class="sourceLineNo">107</span> lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.107"></a>
<span class="sourceLineNo">108</span> } else if (<a name="line.108"></a>
<span class="sourceLineNo">109</span> wakeCount.get() &gt;= NRUNS<a name="line.109"></a>
<span class="sourceLineNo">110</span> &amp;&amp; (EnvironmentEdgeManager.currentTime() - lastUpdate) &gt; WAIT_THRESHOLD<a name="line.110"></a>
<span class="sourceLineNo">111</span> ) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> break;<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span> Threads.sleepWithoutInterrupt(25);<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span> }<a name="line.116"></a>
<span class="sourceLineNo">117</span> };<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span> for (int i = 1; i &lt; threads.length; ++i) {<a name="line.119"></a>
<span class="sourceLineNo">120</span> threads[i] = new Thread() {<a name="line.120"></a>
<span class="sourceLineNo">121</span> @Override<a name="line.121"></a>
<span class="sourceLineNo">122</span> public void run() {<a name="line.122"></a>
<span class="sourceLineNo">123</span> while (true) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> TestProcedureWithEvent proc = (TestProcedureWithEvent) sched.poll();<a name="line.124"></a>
<span class="sourceLineNo">125</span> if (proc == null) {<a name="line.125"></a>
<span class="sourceLineNo">126</span> continue;<a name="line.126"></a>
<span class="sourceLineNo">127</span> }<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span> proc.getEvent().suspend();<a name="line.129"></a>
<span class="sourceLineNo">130</span> waitQueue.add(proc);<a name="line.130"></a>
<span class="sourceLineNo">131</span> proc.getEvent().suspendIfNotReady(proc);<a name="line.131"></a>
<span class="sourceLineNo">132</span> LOG.debug("WAIT " + proc.getEvent());<a name="line.132"></a>
<span class="sourceLineNo">133</span> if (waitCount.incrementAndGet() &gt;= NRUNS) {<a name="line.133"></a>
<span class="sourceLineNo">134</span> break;<a name="line.134"></a>
<span class="sourceLineNo">135</span> }<a name="line.135"></a>
<span class="sourceLineNo">136</span> }<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<a name="line.137"></a>
<span class="sourceLineNo">138</span> };<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> for (int i = 0; i &lt; threads.length; ++i) {<a name="line.141"></a>
<span class="sourceLineNo">142</span> threads[i].start();<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span> for (int i = 0; i &lt; threads.length; ++i) {<a name="line.144"></a>
<span class="sourceLineNo">145</span> threads[i].join();<a name="line.145"></a>
<span class="sourceLineNo">146</span> }<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span> sched.clear();<a name="line.148"></a>
<span class="sourceLineNo">149</span> }<a name="line.149"></a>
<span class="sourceLineNo">150</span><a name="line.150"></a>
<span class="sourceLineNo">151</span> public static class TestProcedureWithEvent extends NoopProcedure&lt;Void&gt; {<a name="line.151"></a>
<span class="sourceLineNo">152</span> private final ProcedureEvent event;<a name="line.152"></a>
<span class="sourceLineNo">153</span><a name="line.153"></a>
<span class="sourceLineNo">154</span> public TestProcedureWithEvent(long procId) {<a name="line.154"></a>
<span class="sourceLineNo">155</span> setProcId(procId);<a name="line.155"></a>
<span class="sourceLineNo">156</span> event = new ProcedureEvent("test-event procId=" + procId);<a name="line.156"></a>
<span class="sourceLineNo">157</span> }<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span> public ProcedureEvent getEvent() {<a name="line.159"></a>
<span class="sourceLineNo">160</span> return event;<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span>}<a name="line.163"></a>
</pre>
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