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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.regionserver;<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.assertTrue;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.concurrent.ThreadLocalRandom;<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.testclassification.MediumTests;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.junit.ClassRule;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.junit.Test;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.junit.experimental.categories.Category;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>@Category({ RegionServerTests.class, MediumTests.class })<a name="line.30"></a>
<span class="sourceLineNo">031</span>public class TestSyncTimeRangeTracker extends TestSimpleTimeRangeTracker {<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span> @ClassRule<a name="line.33"></a>
<span class="sourceLineNo">034</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.34"></a>
<span class="sourceLineNo">035</span> HBaseClassTestRule.forClass(TestSyncTimeRangeTracker.class);<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span> private static final int NUM_KEYS = 8000000;<a name="line.37"></a>
<span class="sourceLineNo">038</span> private static final int NUM_OF_THREADS = 20;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span> @Override<a name="line.40"></a>
<span class="sourceLineNo">041</span> protected TimeRangeTracker getTimeRangeTracker() {<a name="line.41"></a>
<span class="sourceLineNo">042</span> return TimeRangeTracker.create(TimeRangeTracker.Type.SYNC);<a name="line.42"></a>
<span class="sourceLineNo">043</span> }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> @Override<a name="line.45"></a>
<span class="sourceLineNo">046</span> protected TimeRangeTracker getTimeRangeTracker(long min, long max) {<a name="line.46"></a>
<span class="sourceLineNo">047</span> return TimeRangeTracker.create(TimeRangeTracker.Type.SYNC, min, max);<a name="line.47"></a>
<span class="sourceLineNo">048</span> }<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> /**<a name="line.50"></a>
<span class="sourceLineNo">051</span> * Run a bunch of threads against a single TimeRangeTracker and ensure we arrive at right range.<a name="line.51"></a>
<span class="sourceLineNo">052</span> * Here we do ten threads each incrementing over 100k at an offset of the thread index; max is 10<a name="line.52"></a>
<span class="sourceLineNo">053</span> * * 10k and min is 0.<a name="line.53"></a>
<span class="sourceLineNo">054</span> */<a name="line.54"></a>
<span class="sourceLineNo">055</span> @Test<a name="line.55"></a>
<span class="sourceLineNo">056</span> public void testArriveAtRightAnswer() throws InterruptedException {<a name="line.56"></a>
<span class="sourceLineNo">057</span> final TimeRangeTracker trr = getTimeRangeTracker();<a name="line.57"></a>
<span class="sourceLineNo">058</span> final int threadCount = 10;<a name="line.58"></a>
<span class="sourceLineNo">059</span> final int calls = 1000 * 1000;<a name="line.59"></a>
<span class="sourceLineNo">060</span> Thread[] threads = new Thread[threadCount];<a name="line.60"></a>
<span class="sourceLineNo">061</span> for (int i = 0; i &lt; threads.length; i++) {<a name="line.61"></a>
<span class="sourceLineNo">062</span> Thread t = new Thread("" + i) {<a name="line.62"></a>
<span class="sourceLineNo">063</span> @Override<a name="line.63"></a>
<span class="sourceLineNo">064</span> public void run() {<a name="line.64"></a>
<span class="sourceLineNo">065</span> int offset = Integer.parseInt(getName());<a name="line.65"></a>
<span class="sourceLineNo">066</span> boolean even = offset % 2 == 0;<a name="line.66"></a>
<span class="sourceLineNo">067</span> if (even) {<a name="line.67"></a>
<span class="sourceLineNo">068</span> for (int i = (offset * calls); i &lt; calls; i++) {<a name="line.68"></a>
<span class="sourceLineNo">069</span> trr.includeTimestamp(i);<a name="line.69"></a>
<span class="sourceLineNo">070</span> }<a name="line.70"></a>
<span class="sourceLineNo">071</span> } else {<a name="line.71"></a>
<span class="sourceLineNo">072</span> int base = offset * calls;<a name="line.72"></a>
<span class="sourceLineNo">073</span> for (int i = base + calls; i &gt;= base; i--) {<a name="line.73"></a>
<span class="sourceLineNo">074</span> trr.includeTimestamp(i);<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> }<a name="line.77"></a>
<span class="sourceLineNo">078</span> };<a name="line.78"></a>
<span class="sourceLineNo">079</span> t.start();<a name="line.79"></a>
<span class="sourceLineNo">080</span> threads[i] = t;<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span> for (int i = 0; i &lt; threads.length; i++) {<a name="line.82"></a>
<span class="sourceLineNo">083</span> threads[i].join();<a name="line.83"></a>
<span class="sourceLineNo">084</span> }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> assertTrue(trr.getMax() == calls * threadCount);<a name="line.86"></a>
<span class="sourceLineNo">087</span> assertTrue(trr.getMin() == 0);<a name="line.87"></a>
<span class="sourceLineNo">088</span> }<a name="line.88"></a>
<span class="sourceLineNo">089</span><a name="line.89"></a>
<span class="sourceLineNo">090</span> static class RandomTestData {<a name="line.90"></a>
<span class="sourceLineNo">091</span> private long[] keys = new long[NUM_KEYS];<a name="line.91"></a>
<span class="sourceLineNo">092</span> private long min = Long.MAX_VALUE;<a name="line.92"></a>
<span class="sourceLineNo">093</span> private long max = 0;<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> public RandomTestData() {<a name="line.95"></a>
<span class="sourceLineNo">096</span> if (ThreadLocalRandom.current().nextInt(NUM_OF_THREADS) % 2 == 0) {<a name="line.96"></a>
<span class="sourceLineNo">097</span> for (int i = 0; i &lt; NUM_KEYS; i++) {<a name="line.97"></a>
<span class="sourceLineNo">098</span> keys[i] = i + ThreadLocalRandom.current().nextLong(NUM_OF_THREADS);<a name="line.98"></a>
<span class="sourceLineNo">099</span> if (keys[i] &lt; min) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> min = keys[i];<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span> if (keys[i] &gt; max) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> max = keys[i];<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> } else {<a name="line.106"></a>
<span class="sourceLineNo">107</span> for (int i = NUM_KEYS - 1; i &gt;= 0; i--) {<a name="line.107"></a>
<span class="sourceLineNo">108</span> keys[i] = i + ThreadLocalRandom.current().nextLong(NUM_OF_THREADS);<a name="line.108"></a>
<span class="sourceLineNo">109</span> if (keys[i] &lt; min) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> min = keys[i];<a name="line.110"></a>
<span class="sourceLineNo">111</span> }<a name="line.111"></a>
<span class="sourceLineNo">112</span> if (keys[i] &gt; max) {<a name="line.112"></a>
<span class="sourceLineNo">113</span> max = keys[i];<a name="line.113"></a>
<span class="sourceLineNo">114</span> }<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> public long getMax() {<a name="line.119"></a>
<span class="sourceLineNo">120</span> return this.max;<a name="line.120"></a>
<span class="sourceLineNo">121</span> }<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span> public long getMin() {<a name="line.123"></a>
<span class="sourceLineNo">124</span> return this.min;<a name="line.124"></a>
<span class="sourceLineNo">125</span> }<a name="line.125"></a>
<span class="sourceLineNo">126</span> }<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span> static class TrtUpdateRunnable implements Runnable {<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span> private TimeRangeTracker trt;<a name="line.130"></a>
<span class="sourceLineNo">131</span> private RandomTestData data;<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span> public TrtUpdateRunnable(final TimeRangeTracker trt, final RandomTestData data) {<a name="line.133"></a>
<span class="sourceLineNo">134</span> this.trt = trt;<a name="line.134"></a>
<span class="sourceLineNo">135</span> this.data = data;<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> @Override<a name="line.138"></a>
<span class="sourceLineNo">139</span> public void run() {<a name="line.139"></a>
<span class="sourceLineNo">140</span> for (long key : data.keys) {<a name="line.140"></a>
<span class="sourceLineNo">141</span> trt.includeTimestamp(key);<a name="line.141"></a>
<span class="sourceLineNo">142</span> }<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span> }<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span> /**<a name="line.146"></a>
<span class="sourceLineNo">147</span> * Run a bunch of threads against a single TimeRangeTracker and ensure we arrive at right range.<a name="line.147"></a>
<span class="sourceLineNo">148</span> * The data chosen is going to ensure that there are lots collisions, i.e, some other threads may<a name="line.148"></a>
<span class="sourceLineNo">149</span> * already update the value while one tries to update min/max value.<a name="line.149"></a>
<span class="sourceLineNo">150</span> */<a name="line.150"></a>
<span class="sourceLineNo">151</span> @Test<a name="line.151"></a>
<span class="sourceLineNo">152</span> public void testConcurrentIncludeTimestampCorrectness() {<a name="line.152"></a>
<span class="sourceLineNo">153</span> RandomTestData[] testData = new RandomTestData[NUM_OF_THREADS];<a name="line.153"></a>
<span class="sourceLineNo">154</span> long min = Long.MAX_VALUE, max = 0;<a name="line.154"></a>
<span class="sourceLineNo">155</span> for (int i = 0; i &lt; NUM_OF_THREADS; i++) {<a name="line.155"></a>
<span class="sourceLineNo">156</span> testData[i] = new RandomTestData();<a name="line.156"></a>
<span class="sourceLineNo">157</span> if (testData[i].getMin() &lt; min) {<a name="line.157"></a>
<span class="sourceLineNo">158</span> min = testData[i].getMin();<a name="line.158"></a>
<span class="sourceLineNo">159</span> }<a name="line.159"></a>
<span class="sourceLineNo">160</span> if (testData[i].getMax() &gt; max) {<a name="line.160"></a>
<span class="sourceLineNo">161</span> max = testData[i].getMax();<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>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span> TimeRangeTracker trt = TimeRangeTracker.create(TimeRangeTracker.Type.SYNC);<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span> Thread[] t = new Thread[NUM_OF_THREADS];<a name="line.167"></a>
<span class="sourceLineNo">168</span> for (int i = 0; i &lt; NUM_OF_THREADS; i++) {<a name="line.168"></a>
<span class="sourceLineNo">169</span> t[i] = new Thread(new TrtUpdateRunnable(trt, testData[i]));<a name="line.169"></a>
<span class="sourceLineNo">170</span> t[i].start();<a name="line.170"></a>
<span class="sourceLineNo">171</span> }<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span> for (Thread thread : t) {<a name="line.173"></a>
<span class="sourceLineNo">174</span> try {<a name="line.174"></a>
<span class="sourceLineNo">175</span> thread.join();<a name="line.175"></a>
<span class="sourceLineNo">176</span> } catch (InterruptedException e) {<a name="line.176"></a>
<span class="sourceLineNo">177</span> e.printStackTrace();<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><a name="line.180"></a>
<span class="sourceLineNo">181</span> assertTrue(min == trt.getMin());<a name="line.181"></a>
<span class="sourceLineNo">182</span> assertTrue(max == trt.getMax());<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span>}<a name="line.184"></a>
</pre>
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