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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.client;<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>import static org.junit.Assert.assertTrue;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.conf.Configuration;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.ServerName;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.backoff.ExponentialClientBackoffPolicy;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.backoff.ServerStatistics;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.testclassification.ClientTests;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.util.Bytes;<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.mockito.Mockito;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span><a name="line.38"></a> |
| <span class="sourceLineNo">039</span>@Category({ ClientTests.class, SmallTests.class })<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public class TestClientExponentialBackoff {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> @ClassRule<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> HBaseClassTestRule.forClass(TestClientExponentialBackoff.class);<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> ServerName server = Mockito.mock(ServerName.class);<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> byte[] regionname = Bytes.toBytes("region");<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> @Test<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> public void testNulls() {<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> Configuration conf = new Configuration(false);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> assertEquals(0, backoff.getBackoffTime(null, null, null));<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> // server name doesn't matter to calculation, but check it now anyways<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> assertEquals(0, backoff.getBackoffTime(server, null, null));<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> assertEquals(0, backoff.getBackoffTime(server, regionname, null));<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> // check when no stats for the region yet<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> ServerStatistics stats = new ServerStatistics();<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> assertEquals(0, backoff.getBackoffTime(server, regionname, stats));<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 testMaxLoad() {<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> Configuration conf = new Configuration(false);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> ServerStatistics stats = new ServerStatistics();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> update(stats, 100);<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> assertEquals(ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF,<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> backoff.getBackoffTime(server, regionname, stats));<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> // another policy with a different max timeout<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> long max = 100;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> conf.setLong(ExponentialClientBackoffPolicy.MAX_BACKOFF_KEY, max);<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> ExponentialClientBackoffPolicy backoffShortTimeout = new ExponentialClientBackoffPolicy(conf);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> assertEquals(max, backoffShortTimeout.getBackoffTime(server, regionname, stats));<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> // test beyond 100 still doesn't exceed the max<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> update(stats, 101);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> assertEquals(ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> backoff.getBackoffTime(server, regionname, stats));<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> assertEquals(max, backoffShortTimeout.getBackoffTime(server, regionname, stats));<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> // and that when we are below 100, its less than the max timeout<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> update(stats, 99);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> assertTrue(backoff.getBackoffTime(server, regionname, stats)<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> < ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> assertTrue(backoffShortTimeout.getBackoffTime(server, regionname, stats) < max);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> /**<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * Make sure that we get results in the order that we expect - backoff for a load of 1 should less<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * than backoff for 10, which should be less than that for 50.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> */<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> @Test<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> public void testResultOrdering() {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> Configuration conf = new Configuration(false);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> // make the max timeout really high so we get differentiation between load factors<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> conf.setLong(ExponentialClientBackoffPolicy.MAX_BACKOFF_KEY, Integer.MAX_VALUE);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> ServerStatistics stats = new ServerStatistics();<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> long previous = backoff.getBackoffTime(server, regionname, stats);<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> for (int i = 1; i <= 100; i++) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> update(stats, i);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> long next = backoff.getBackoffTime(server, regionname, stats);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> assertTrue("Previous backoff time" + previous + " >= " + next + ", the next backoff time for "<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> + "load " + i, previous < next);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> previous = next;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> @Test<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> public void testHeapOccupancyPolicy() {<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> Configuration conf = new Configuration(false);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> ServerStatistics stats = new ServerStatistics();<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> long backoffTime;<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> update(stats, 0, 95, 0);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> assertTrue("Heap occupancy at low watermark had no effect", backoffTime > 0);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span><a name="line.125"></a> |
| <span class="sourceLineNo">126</span> long previous = backoffTime;<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> update(stats, 0, 96, 0);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> assertTrue("Increase above low watermark should have increased backoff",<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> backoffTime > previous);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> update(stats, 0, 98, 0);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> assertEquals("We should be using max backoff when at high watermark",<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF, backoffTime);<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> @Test<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public void testCompactionPressurePolicy() {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> Configuration conf = new Configuration(false);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> ServerStatistics stats = new ServerStatistics();<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> long backoffTime;<a name="line.144"></a> |
| <span class="sourceLineNo">145</span><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> update(stats, 0, 0, 0);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> assertTrue("Compaction pressure has no effect", backoffTime == 0);<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> long previous = backoffTime;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> update(stats, 0, 0, 50);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> assertTrue("Compaction pressure should be bigger", backoffTime > previous);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> update(stats, 0, 0, 100);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> backoffTime = backoff.getBackoffTime(server, regionname, stats);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> assertEquals("under heavy compaction pressure",<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF, backoffTime);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> private void update(ServerStatistics stats, int load) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> ClientProtos.RegionLoadStats stat =<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> ClientProtos.RegionLoadStats.newBuilder().setMemStoreLoad(load).build();<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> stats.update(regionname, ProtobufUtil.createRegionLoadStats(stat));<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> private void update(ServerStatistics stats, int memstoreLoad, int heapOccupancy,<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> int compactionPressure) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> ClientProtos.RegionLoadStats stat =<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> ClientProtos.RegionLoadStats.newBuilder().setMemStoreLoad(memstoreLoad)<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> .setHeapOccupancy(heapOccupancy).setCompactionPressure(compactionPressure).build();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> stats.update(regionname, ProtobufUtil.createRegionLoadStats(stat));<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span>}<a name="line.174"></a> |
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