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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.client;</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.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">022</span><span id="line-22"></span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.client.backoff.ExponentialClientBackoffPolicy;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.client.backoff.ServerStatistics;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.testclassification.ClientTests;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.testclassification.SmallTests;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.junit.ClassRule;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.junit.Test;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.mockito.Mockito;</span> |
| <span class="source-line-no">035</span><span id="line-35"></span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39">@Category({ ClientTests.class, SmallTests.class })</span> |
| <span class="source-line-no">040</span><span id="line-40">public class TestClientExponentialBackoff {</span> |
| <span class="source-line-no">041</span><span id="line-41"> @ClassRule</span> |
| <span class="source-line-no">042</span><span id="line-42"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">043</span><span id="line-43"> HBaseClassTestRule.forClass(TestClientExponentialBackoff.class);</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> ServerName server = Mockito.mock(ServerName.class);</span> |
| <span class="source-line-no">046</span><span id="line-46"> byte[] regionname = Bytes.toBytes("region");</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> @Test</span> |
| <span class="source-line-no">049</span><span id="line-49"> public void testNulls() {</span> |
| <span class="source-line-no">050</span><span id="line-50"> Configuration conf = new Configuration(false);</span> |
| <span class="source-line-no">051</span><span id="line-51"> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">052</span><span id="line-52"> assertEquals(0, backoff.getBackoffTime(null, null, null));</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> // server name doesn't matter to calculation, but check it now anyways</span> |
| <span class="source-line-no">055</span><span id="line-55"> assertEquals(0, backoff.getBackoffTime(server, null, null));</span> |
| <span class="source-line-no">056</span><span id="line-56"> assertEquals(0, backoff.getBackoffTime(server, regionname, null));</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> // check when no stats for the region yet</span> |
| <span class="source-line-no">059</span><span id="line-59"> ServerStatistics stats = new ServerStatistics();</span> |
| <span class="source-line-no">060</span><span id="line-60"> assertEquals(0, backoff.getBackoffTime(server, regionname, stats));</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> @Test</span> |
| <span class="source-line-no">064</span><span id="line-64"> public void testMaxLoad() {</span> |
| <span class="source-line-no">065</span><span id="line-65"> Configuration conf = new Configuration(false);</span> |
| <span class="source-line-no">066</span><span id="line-66"> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> ServerStatistics stats = new ServerStatistics();</span> |
| <span class="source-line-no">069</span><span id="line-69"> update(stats, 100);</span> |
| <span class="source-line-no">070</span><span id="line-70"> assertEquals(ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF,</span> |
| <span class="source-line-no">071</span><span id="line-71"> backoff.getBackoffTime(server, regionname, stats));</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> // another policy with a different max timeout</span> |
| <span class="source-line-no">074</span><span id="line-74"> long max = 100;</span> |
| <span class="source-line-no">075</span><span id="line-75"> conf.setLong(ExponentialClientBackoffPolicy.MAX_BACKOFF_KEY, max);</span> |
| <span class="source-line-no">076</span><span id="line-76"> ExponentialClientBackoffPolicy backoffShortTimeout = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">077</span><span id="line-77"> assertEquals(max, backoffShortTimeout.getBackoffTime(server, regionname, stats));</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> // test beyond 100 still doesn't exceed the max</span> |
| <span class="source-line-no">080</span><span id="line-80"> update(stats, 101);</span> |
| <span class="source-line-no">081</span><span id="line-81"> assertEquals(ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF,</span> |
| <span class="source-line-no">082</span><span id="line-82"> backoff.getBackoffTime(server, regionname, stats));</span> |
| <span class="source-line-no">083</span><span id="line-83"> assertEquals(max, backoffShortTimeout.getBackoffTime(server, regionname, stats));</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> // and that when we are below 100, its less than the max timeout</span> |
| <span class="source-line-no">086</span><span id="line-86"> update(stats, 99);</span> |
| <span class="source-line-no">087</span><span id="line-87"> assertTrue(backoff.getBackoffTime(server, regionname, stats)</span> |
| <span class="source-line-no">088</span><span id="line-88"> < ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF);</span> |
| <span class="source-line-no">089</span><span id="line-89"> assertTrue(backoffShortTimeout.getBackoffTime(server, regionname, stats) < max);</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> /**</span> |
| <span class="source-line-no">093</span><span id="line-93"> * Make sure that we get results in the order that we expect - backoff for a load of 1 should less</span> |
| <span class="source-line-no">094</span><span id="line-94"> * than backoff for 10, which should be less than that for 50.</span> |
| <span class="source-line-no">095</span><span id="line-95"> */</span> |
| <span class="source-line-no">096</span><span id="line-96"> @Test</span> |
| <span class="source-line-no">097</span><span id="line-97"> public void testResultOrdering() {</span> |
| <span class="source-line-no">098</span><span id="line-98"> Configuration conf = new Configuration(false);</span> |
| <span class="source-line-no">099</span><span id="line-99"> // make the max timeout really high so we get differentiation between load factors</span> |
| <span class="source-line-no">100</span><span id="line-100"> conf.setLong(ExponentialClientBackoffPolicy.MAX_BACKOFF_KEY, Integer.MAX_VALUE);</span> |
| <span class="source-line-no">101</span><span id="line-101"> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> ServerStatistics stats = new ServerStatistics();</span> |
| <span class="source-line-no">104</span><span id="line-104"> long previous = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">105</span><span id="line-105"> for (int i = 1; i <= 100; i++) {</span> |
| <span class="source-line-no">106</span><span id="line-106"> update(stats, i);</span> |
| <span class="source-line-no">107</span><span id="line-107"> long next = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">108</span><span id="line-108"> assertTrue("Previous backoff time" + previous + " >= " + next + ", the next backoff time for "</span> |
| <span class="source-line-no">109</span><span id="line-109"> + "load " + i, previous < next);</span> |
| <span class="source-line-no">110</span><span id="line-110"> previous = next;</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"></span> |
| <span class="source-line-no">114</span><span id="line-114"> @Test</span> |
| <span class="source-line-no">115</span><span id="line-115"> public void testHeapOccupancyPolicy() {</span> |
| <span class="source-line-no">116</span><span id="line-116"> Configuration conf = new Configuration(false);</span> |
| <span class="source-line-no">117</span><span id="line-117"> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">118</span><span id="line-118"></span> |
| <span class="source-line-no">119</span><span id="line-119"> ServerStatistics stats = new ServerStatistics();</span> |
| <span class="source-line-no">120</span><span id="line-120"> long backoffTime;</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> update(stats, 0, 95, 0);</span> |
| <span class="source-line-no">123</span><span id="line-123"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">124</span><span id="line-124"> assertTrue("Heap occupancy at low watermark had no effect", backoffTime > 0);</span> |
| <span class="source-line-no">125</span><span id="line-125"></span> |
| <span class="source-line-no">126</span><span id="line-126"> long previous = backoffTime;</span> |
| <span class="source-line-no">127</span><span id="line-127"> update(stats, 0, 96, 0);</span> |
| <span class="source-line-no">128</span><span id="line-128"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">129</span><span id="line-129"> assertTrue("Increase above low watermark should have increased backoff",</span> |
| <span class="source-line-no">130</span><span id="line-130"> backoffTime > previous);</span> |
| <span class="source-line-no">131</span><span id="line-131"></span> |
| <span class="source-line-no">132</span><span id="line-132"> update(stats, 0, 98, 0);</span> |
| <span class="source-line-no">133</span><span id="line-133"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">134</span><span id="line-134"> assertEquals("We should be using max backoff when at high watermark",</span> |
| <span class="source-line-no">135</span><span id="line-135"> ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF, backoffTime);</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> @Test</span> |
| <span class="source-line-no">139</span><span id="line-139"> public void testCompactionPressurePolicy() {</span> |
| <span class="source-line-no">140</span><span id="line-140"> Configuration conf = new Configuration(false);</span> |
| <span class="source-line-no">141</span><span id="line-141"> ExponentialClientBackoffPolicy backoff = new ExponentialClientBackoffPolicy(conf);</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> ServerStatistics stats = new ServerStatistics();</span> |
| <span class="source-line-no">144</span><span id="line-144"> long backoffTime;</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> update(stats, 0, 0, 0);</span> |
| <span class="source-line-no">147</span><span id="line-147"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">148</span><span id="line-148"> assertTrue("Compaction pressure has no effect", backoffTime == 0);</span> |
| <span class="source-line-no">149</span><span id="line-149"></span> |
| <span class="source-line-no">150</span><span id="line-150"> long previous = backoffTime;</span> |
| <span class="source-line-no">151</span><span id="line-151"> update(stats, 0, 0, 50);</span> |
| <span class="source-line-no">152</span><span id="line-152"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">153</span><span id="line-153"> assertTrue("Compaction pressure should be bigger", backoffTime > previous);</span> |
| <span class="source-line-no">154</span><span id="line-154"></span> |
| <span class="source-line-no">155</span><span id="line-155"> update(stats, 0, 0, 100);</span> |
| <span class="source-line-no">156</span><span id="line-156"> backoffTime = backoff.getBackoffTime(server, regionname, stats);</span> |
| <span class="source-line-no">157</span><span id="line-157"> assertEquals("under heavy compaction pressure",</span> |
| <span class="source-line-no">158</span><span id="line-158"> ExponentialClientBackoffPolicy.DEFAULT_MAX_BACKOFF, backoffTime);</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</span> |
| <span class="source-line-no">160</span><span id="line-160"></span> |
| <span class="source-line-no">161</span><span id="line-161"> private void update(ServerStatistics stats, int load) {</span> |
| <span class="source-line-no">162</span><span id="line-162"> ClientProtos.RegionLoadStats stat =</span> |
| <span class="source-line-no">163</span><span id="line-163"> ClientProtos.RegionLoadStats.newBuilder().setMemStoreLoad(load).build();</span> |
| <span class="source-line-no">164</span><span id="line-164"> stats.update(regionname, ProtobufUtil.createRegionLoadStats(stat));</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"></span> |
| <span class="source-line-no">167</span><span id="line-167"> private void update(ServerStatistics stats, int memstoreLoad, int heapOccupancy,</span> |
| <span class="source-line-no">168</span><span id="line-168"> int compactionPressure) {</span> |
| <span class="source-line-no">169</span><span id="line-169"> ClientProtos.RegionLoadStats stat =</span> |
| <span class="source-line-no">170</span><span id="line-170"> ClientProtos.RegionLoadStats.newBuilder().setMemStoreLoad(memstoreLoad)</span> |
| <span class="source-line-no">171</span><span id="line-171"> .setHeapOccupancy(heapOccupancy).setCompactionPressure(compactionPressure).build();</span> |
| <span class="source-line-no">172</span><span id="line-172"> stats.update(regionname, ProtobufUtil.createRegionLoadStats(stat));</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174">}</span> |
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| </pre> |
| </div> |
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