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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.io.hfile;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.io.ByteBuffAllocator.HEAP;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.junit.Assert.assertEquals;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotNull;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import static org.junit.Assert.assertNull;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import static org.junit.Assert.assertTrue;<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.nio.ByteBuffer;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Random;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.ExecutorService;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.concurrent.Executors;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HConstants;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.Waiter;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.HeapSize;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.io.hfile.LruAdaptiveBlockCache.EvictionThread;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.testclassification.IOTests;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.ClassSize;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.junit.Assert;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.junit.ClassRule;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.junit.Test;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.junit.experimental.categories.Category;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.slf4j.Logger;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.slf4j.LoggerFactory;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * Tests the concurrent LruAdaptiveBlockCache.<a name="line.54"></a>
<span class="sourceLineNo">055</span> * &lt;p&gt;<a name="line.55"></a>
<span class="sourceLineNo">056</span> * Tests will ensure it grows and shrinks in size properly, evictions run when they're supposed to<a name="line.56"></a>
<span class="sourceLineNo">057</span> * and do what they should, and that cached blocks are accessible when expected to be.<a name="line.57"></a>
<span class="sourceLineNo">058</span> */<a name="line.58"></a>
<span class="sourceLineNo">059</span>@Category({ IOTests.class, SmallTests.class })<a name="line.59"></a>
<span class="sourceLineNo">060</span>public class TestLruAdaptiveBlockCache {<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> @ClassRule<a name="line.62"></a>
<span class="sourceLineNo">063</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.63"></a>
<span class="sourceLineNo">064</span> HBaseClassTestRule.forClass(TestLruAdaptiveBlockCache.class);<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span> private static final Logger LOG = LoggerFactory.getLogger(TestLruAdaptiveBlockCache.class);<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span> private static final Configuration CONF = HBaseConfiguration.create();<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span> @Test<a name="line.70"></a>
<span class="sourceLineNo">071</span> public void testCacheEvictionThreadSafe() throws Exception {<a name="line.71"></a>
<span class="sourceLineNo">072</span> long maxSize = 100000;<a name="line.72"></a>
<span class="sourceLineNo">073</span> int numBlocks = 9;<a name="line.73"></a>
<span class="sourceLineNo">074</span> int testRuns = 10;<a name="line.74"></a>
<span class="sourceLineNo">075</span> final long blockSize = calculateBlockSizeDefault(maxSize, numBlocks);<a name="line.75"></a>
<span class="sourceLineNo">076</span> assertTrue("calculateBlockSize appears broken.", blockSize * numBlocks &lt;= maxSize);<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> final LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize);<a name="line.78"></a>
<span class="sourceLineNo">079</span> EvictionThread evictionThread = cache.getEvictionThread();<a name="line.79"></a>
<span class="sourceLineNo">080</span> assertNotNull(evictionThread);<a name="line.80"></a>
<span class="sourceLineNo">081</span> Waiter.waitFor(CONF, 10000, 100, () -&gt; evictionThread.isEnteringRun());<a name="line.81"></a>
<span class="sourceLineNo">082</span> final String hfileName = "hfile";<a name="line.82"></a>
<span class="sourceLineNo">083</span> int threads = 10;<a name="line.83"></a>
<span class="sourceLineNo">084</span> final int blocksPerThread = 5 * numBlocks;<a name="line.84"></a>
<span class="sourceLineNo">085</span> for (int run = 0; run != testRuns; ++run) {<a name="line.85"></a>
<span class="sourceLineNo">086</span> final AtomicInteger blockCount = new AtomicInteger(0);<a name="line.86"></a>
<span class="sourceLineNo">087</span> ExecutorService service = Executors.newFixedThreadPool(threads);<a name="line.87"></a>
<span class="sourceLineNo">088</span> for (int i = 0; i != threads; ++i) {<a name="line.88"></a>
<span class="sourceLineNo">089</span> service.execute(() -&gt; {<a name="line.89"></a>
<span class="sourceLineNo">090</span> for (int blockIndex = 0; blockIndex &lt; blocksPerThread<a name="line.90"></a>
<span class="sourceLineNo">091</span> || (!cache.isEvictionInProgress()); ++blockIndex) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> CachedItem block =<a name="line.92"></a>
<span class="sourceLineNo">093</span> new CachedItem(hfileName, (int) blockSize, blockCount.getAndIncrement());<a name="line.93"></a>
<span class="sourceLineNo">094</span> boolean inMemory = Math.random() &gt; 0.5;<a name="line.94"></a>
<span class="sourceLineNo">095</span> cache.cacheBlock(block.cacheKey, block, inMemory);<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span> cache.evictBlocksByHfileName(hfileName);<a name="line.97"></a>
<span class="sourceLineNo">098</span> });<a name="line.98"></a>
<span class="sourceLineNo">099</span> }<a name="line.99"></a>
<span class="sourceLineNo">100</span> service.shutdown();<a name="line.100"></a>
<span class="sourceLineNo">101</span> // The test may fail here if the evict thread frees the blocks too fast<a name="line.101"></a>
<span class="sourceLineNo">102</span> service.awaitTermination(10, TimeUnit.MINUTES);<a name="line.102"></a>
<span class="sourceLineNo">103</span> Waiter.waitFor(CONF, 10000, 100, new ExplainingPredicate&lt;Exception&gt;() {<a name="line.103"></a>
<span class="sourceLineNo">104</span> @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span> public boolean evaluate() throws Exception {<a name="line.105"></a>
<span class="sourceLineNo">106</span> return cache.getBlockCount() == 0;<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span> @Override<a name="line.109"></a>
<span class="sourceLineNo">110</span> public String explainFailure() throws Exception {<a name="line.110"></a>
<span class="sourceLineNo">111</span> return "Cache block count failed to return to 0";<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> assertEquals(0, cache.getBlockCount());<a name="line.114"></a>
<span class="sourceLineNo">115</span> assertEquals(cache.getOverhead(), cache.getCurrentSize());<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> @Test<a name="line.119"></a>
<span class="sourceLineNo">120</span> public void testBackgroundEvictionThread() throws Exception {<a name="line.120"></a>
<span class="sourceLineNo">121</span> long maxSize = 100000;<a name="line.121"></a>
<span class="sourceLineNo">122</span> int numBlocks = 9;<a name="line.122"></a>
<span class="sourceLineNo">123</span> long blockSize = calculateBlockSizeDefault(maxSize, numBlocks);<a name="line.123"></a>
<span class="sourceLineNo">124</span> assertTrue("calculateBlockSize appears broken.", blockSize * numBlocks &lt;= maxSize);<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize);<a name="line.126"></a>
<span class="sourceLineNo">127</span> EvictionThread evictionThread = cache.getEvictionThread();<a name="line.127"></a>
<span class="sourceLineNo">128</span> assertNotNull(evictionThread);<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span> CachedItem[] blocks = generateFixedBlocks(numBlocks + 1, blockSize, "block");<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> // Make sure eviction thread has entered run method<a name="line.132"></a>
<span class="sourceLineNo">133</span> Waiter.waitFor(CONF, 10000, 10, () -&gt; evictionThread.isEnteringRun());<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span> // Add all the blocks<a name="line.135"></a>
<span class="sourceLineNo">136</span> for (CachedItem block : blocks) {<a name="line.136"></a>
<span class="sourceLineNo">137</span> cache.cacheBlock(block.cacheKey, block);<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> // wait until at least one eviction has run<a name="line.140"></a>
<span class="sourceLineNo">141</span> Waiter.waitFor(CONF, 30000, 200, new ExplainingPredicate&lt;Exception&gt;() {<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span> @Override<a name="line.143"></a>
<span class="sourceLineNo">144</span> public boolean evaluate() throws Exception {<a name="line.144"></a>
<span class="sourceLineNo">145</span> return cache.getStats().getEvictionCount() &gt; 0;<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> @Override<a name="line.148"></a>
<span class="sourceLineNo">149</span> public String explainFailure() throws Exception {<a name="line.149"></a>
<span class="sourceLineNo">150</span> return "Eviction never happened.";<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><a name="line.153"></a>
<span class="sourceLineNo">154</span> // let cache stabilize<a name="line.154"></a>
<span class="sourceLineNo">155</span> // On some systems, the cache will run multiple evictions before it attains<a name="line.155"></a>
<span class="sourceLineNo">156</span> // steady-state. For instance, after populating the cache with 10 blocks,<a name="line.156"></a>
<span class="sourceLineNo">157</span> // the first eviction evicts a single block and then a second eviction<a name="line.157"></a>
<span class="sourceLineNo">158</span> // evicts another. I think this is due to the delta between minSize and<a name="line.158"></a>
<span class="sourceLineNo">159</span> // acceptableSize, combined with variance between object overhead on<a name="line.159"></a>
<span class="sourceLineNo">160</span> // different environments.<a name="line.160"></a>
<span class="sourceLineNo">161</span> int n = 0;<a name="line.161"></a>
<span class="sourceLineNo">162</span> for (long prevCnt = 0 /* &lt; number of blocks added */, curCnt = cache.getBlockCount(); prevCnt<a name="line.162"></a>
<span class="sourceLineNo">163</span> != curCnt; prevCnt = curCnt, curCnt = cache.getBlockCount()) {<a name="line.163"></a>
<span class="sourceLineNo">164</span> Thread.sleep(200);<a name="line.164"></a>
<span class="sourceLineNo">165</span> assertTrue("Cache never stabilized.", n++ &lt; 100);<a name="line.165"></a>
<span class="sourceLineNo">166</span> }<a name="line.166"></a>
<span class="sourceLineNo">167</span><a name="line.167"></a>
<span class="sourceLineNo">168</span> long evictionCount = cache.getStats().getEvictionCount();<a name="line.168"></a>
<span class="sourceLineNo">169</span> assertTrue(evictionCount &gt;= 1);<a name="line.169"></a>
<span class="sourceLineNo">170</span> LOG.info("Background Evictions run: {}", evictionCount);<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> @Test<a name="line.173"></a>
<span class="sourceLineNo">174</span> public void testCacheSimple() throws Exception {<a name="line.174"></a>
<span class="sourceLineNo">175</span> long maxSize = 1000000;<a name="line.175"></a>
<span class="sourceLineNo">176</span> long blockSize = calculateBlockSizeDefault(maxSize, 101);<a name="line.176"></a>
<span class="sourceLineNo">177</span><a name="line.177"></a>
<span class="sourceLineNo">178</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize);<a name="line.178"></a>
<span class="sourceLineNo">179</span><a name="line.179"></a>
<span class="sourceLineNo">180</span> CachedItem[] blocks = generateRandomBlocks(100, blockSize);<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span> long expectedCacheSize = cache.heapSize();<a name="line.182"></a>
<span class="sourceLineNo">183</span><a name="line.183"></a>
<span class="sourceLineNo">184</span> // Confirm empty<a name="line.184"></a>
<span class="sourceLineNo">185</span> for (CachedItem block : blocks) {<a name="line.185"></a>
<span class="sourceLineNo">186</span> assertTrue(cache.getBlock(block.cacheKey, true, false, true) == null);<a name="line.186"></a>
<span class="sourceLineNo">187</span> }<a name="line.187"></a>
<span class="sourceLineNo">188</span><a name="line.188"></a>
<span class="sourceLineNo">189</span> // Add blocks<a name="line.189"></a>
<span class="sourceLineNo">190</span> for (CachedItem block : blocks) {<a name="line.190"></a>
<span class="sourceLineNo">191</span> cache.cacheBlock(block.cacheKey, block);<a name="line.191"></a>
<span class="sourceLineNo">192</span> expectedCacheSize += block.cacheBlockHeapSize();<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>
<span class="sourceLineNo">195</span> // Verify correctly calculated cache heap size<a name="line.195"></a>
<span class="sourceLineNo">196</span> assertEquals(expectedCacheSize, cache.heapSize());<a name="line.196"></a>
<span class="sourceLineNo">197</span><a name="line.197"></a>
<span class="sourceLineNo">198</span> // Check if all blocks are properly cached and retrieved<a name="line.198"></a>
<span class="sourceLineNo">199</span> for (CachedItem block : blocks) {<a name="line.199"></a>
<span class="sourceLineNo">200</span> HeapSize buf = cache.getBlock(block.cacheKey, true, false, true);<a name="line.200"></a>
<span class="sourceLineNo">201</span> assertTrue(buf != null);<a name="line.201"></a>
<span class="sourceLineNo">202</span> assertEquals(buf.heapSize(), block.heapSize());<a name="line.202"></a>
<span class="sourceLineNo">203</span> }<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span> // Re-add same blocks and ensure nothing has changed<a name="line.205"></a>
<span class="sourceLineNo">206</span> long expectedBlockCount = cache.getBlockCount();<a name="line.206"></a>
<span class="sourceLineNo">207</span> for (CachedItem block : blocks) {<a name="line.207"></a>
<span class="sourceLineNo">208</span> cache.cacheBlock(block.cacheKey, block);<a name="line.208"></a>
<span class="sourceLineNo">209</span> }<a name="line.209"></a>
<span class="sourceLineNo">210</span> assertEquals("Cache should ignore cache requests for blocks already in cache",<a name="line.210"></a>
<span class="sourceLineNo">211</span> expectedBlockCount, cache.getBlockCount());<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span> // Verify correctly calculated cache heap size<a name="line.213"></a>
<span class="sourceLineNo">214</span> assertEquals(expectedCacheSize, cache.heapSize());<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span> // Check if all blocks are properly cached and retrieved<a name="line.216"></a>
<span class="sourceLineNo">217</span> for (CachedItem block : blocks) {<a name="line.217"></a>
<span class="sourceLineNo">218</span> HeapSize buf = cache.getBlock(block.cacheKey, true, false, true);<a name="line.218"></a>
<span class="sourceLineNo">219</span> assertTrue(buf != null);<a name="line.219"></a>
<span class="sourceLineNo">220</span> assertEquals(buf.heapSize(), block.heapSize());<a name="line.220"></a>
<span class="sourceLineNo">221</span> }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span> // Expect no evictions<a name="line.223"></a>
<span class="sourceLineNo">224</span> assertEquals(0, cache.getStats().getEvictionCount());<a name="line.224"></a>
<span class="sourceLineNo">225</span> Thread t = new LruAdaptiveBlockCache.StatisticsThread(cache);<a name="line.225"></a>
<span class="sourceLineNo">226</span> t.start();<a name="line.226"></a>
<span class="sourceLineNo">227</span> t.join();<a name="line.227"></a>
<span class="sourceLineNo">228</span> }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span> @Test<a name="line.230"></a>
<span class="sourceLineNo">231</span> public void testCacheEvictionSimple() throws Exception {<a name="line.231"></a>
<span class="sourceLineNo">232</span> long maxSize = 100000;<a name="line.232"></a>
<span class="sourceLineNo">233</span> long blockSize = calculateBlockSizeDefault(maxSize, 10);<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false);<a name="line.235"></a>
<span class="sourceLineNo">236</span><a name="line.236"></a>
<span class="sourceLineNo">237</span> CachedItem[] blocks = generateFixedBlocks(10, blockSize, "block");<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span> long expectedCacheSize = cache.heapSize();<a name="line.239"></a>
<span class="sourceLineNo">240</span><a name="line.240"></a>
<span class="sourceLineNo">241</span> // Add all the blocks<a name="line.241"></a>
<span class="sourceLineNo">242</span> for (CachedItem block : blocks) {<a name="line.242"></a>
<span class="sourceLineNo">243</span> cache.cacheBlock(block.cacheKey, block);<a name="line.243"></a>
<span class="sourceLineNo">244</span> expectedCacheSize += block.cacheBlockHeapSize();<a name="line.244"></a>
<span class="sourceLineNo">245</span> }<a name="line.245"></a>
<span class="sourceLineNo">246</span><a name="line.246"></a>
<span class="sourceLineNo">247</span> // A single eviction run should have occurred<a name="line.247"></a>
<span class="sourceLineNo">248</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.248"></a>
<span class="sourceLineNo">249</span><a name="line.249"></a>
<span class="sourceLineNo">250</span> // Our expected size overruns acceptable limit<a name="line.250"></a>
<span class="sourceLineNo">251</span> assertTrue(expectedCacheSize &gt; (maxSize * LruAdaptiveBlockCache.DEFAULT_ACCEPTABLE_FACTOR));<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span> // But the cache did not grow beyond max<a name="line.253"></a>
<span class="sourceLineNo">254</span> assertTrue(cache.heapSize() &lt; maxSize);<a name="line.254"></a>
<span class="sourceLineNo">255</span><a name="line.255"></a>
<span class="sourceLineNo">256</span> // And is still below the acceptable limit<a name="line.256"></a>
<span class="sourceLineNo">257</span> assertTrue(cache.heapSize() &lt; (maxSize * LruAdaptiveBlockCache.DEFAULT_ACCEPTABLE_FACTOR));<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span> // All blocks except block 0 should be in the cache<a name="line.259"></a>
<span class="sourceLineNo">260</span> assertTrue(cache.getBlock(blocks[0].cacheKey, true, false, true) == null);<a name="line.260"></a>
<span class="sourceLineNo">261</span> for (int i = 1; i &lt; blocks.length; i++) {<a name="line.261"></a>
<span class="sourceLineNo">262</span> assertEquals(cache.getBlock(blocks[i].cacheKey, true, false, true), blocks[i]);<a name="line.262"></a>
<span class="sourceLineNo">263</span> }<a name="line.263"></a>
<span class="sourceLineNo">264</span> }<a name="line.264"></a>
<span class="sourceLineNo">265</span><a name="line.265"></a>
<span class="sourceLineNo">266</span> @Test<a name="line.266"></a>
<span class="sourceLineNo">267</span> public void testCacheEvictionTwoPriorities() throws Exception {<a name="line.267"></a>
<span class="sourceLineNo">268</span> long maxSize = 100000;<a name="line.268"></a>
<span class="sourceLineNo">269</span> long blockSize = calculateBlockSizeDefault(maxSize, 10);<a name="line.269"></a>
<span class="sourceLineNo">270</span><a name="line.270"></a>
<span class="sourceLineNo">271</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false);<a name="line.271"></a>
<span class="sourceLineNo">272</span><a name="line.272"></a>
<span class="sourceLineNo">273</span> CachedItem[] singleBlocks = generateFixedBlocks(5, 10000, "single");<a name="line.273"></a>
<span class="sourceLineNo">274</span> CachedItem[] multiBlocks = generateFixedBlocks(5, 10000, "multi");<a name="line.274"></a>
<span class="sourceLineNo">275</span><a name="line.275"></a>
<span class="sourceLineNo">276</span> long expectedCacheSize = cache.heapSize();<a name="line.276"></a>
<span class="sourceLineNo">277</span><a name="line.277"></a>
<span class="sourceLineNo">278</span> // Add and get the multi blocks<a name="line.278"></a>
<span class="sourceLineNo">279</span> for (CachedItem block : multiBlocks) {<a name="line.279"></a>
<span class="sourceLineNo">280</span> cache.cacheBlock(block.cacheKey, block);<a name="line.280"></a>
<span class="sourceLineNo">281</span> expectedCacheSize += block.cacheBlockHeapSize();<a name="line.281"></a>
<span class="sourceLineNo">282</span> assertEquals(cache.getBlock(block.cacheKey, true, false, true), block);<a name="line.282"></a>
<span class="sourceLineNo">283</span> }<a name="line.283"></a>
<span class="sourceLineNo">284</span><a name="line.284"></a>
<span class="sourceLineNo">285</span> // Add the single blocks (no get)<a name="line.285"></a>
<span class="sourceLineNo">286</span> for (CachedItem block : singleBlocks) {<a name="line.286"></a>
<span class="sourceLineNo">287</span> cache.cacheBlock(block.cacheKey, block);<a name="line.287"></a>
<span class="sourceLineNo">288</span> expectedCacheSize += block.heapSize();<a name="line.288"></a>
<span class="sourceLineNo">289</span> }<a name="line.289"></a>
<span class="sourceLineNo">290</span><a name="line.290"></a>
<span class="sourceLineNo">291</span> // A single eviction run should have occurred<a name="line.291"></a>
<span class="sourceLineNo">292</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.292"></a>
<span class="sourceLineNo">293</span><a name="line.293"></a>
<span class="sourceLineNo">294</span> // We expect two entries evicted<a name="line.294"></a>
<span class="sourceLineNo">295</span> assertEquals(2, cache.getStats().getEvictedCount());<a name="line.295"></a>
<span class="sourceLineNo">296</span><a name="line.296"></a>
<span class="sourceLineNo">297</span> // Our expected size overruns acceptable limit<a name="line.297"></a>
<span class="sourceLineNo">298</span> assertTrue(expectedCacheSize &gt; (maxSize * LruAdaptiveBlockCache.DEFAULT_ACCEPTABLE_FACTOR));<a name="line.298"></a>
<span class="sourceLineNo">299</span><a name="line.299"></a>
<span class="sourceLineNo">300</span> // But the cache did not grow beyond max<a name="line.300"></a>
<span class="sourceLineNo">301</span> assertTrue(cache.heapSize() &lt;= maxSize);<a name="line.301"></a>
<span class="sourceLineNo">302</span><a name="line.302"></a>
<span class="sourceLineNo">303</span> // And is now below the acceptable limit<a name="line.303"></a>
<span class="sourceLineNo">304</span> assertTrue(cache.heapSize() &lt;= (maxSize * LruAdaptiveBlockCache.DEFAULT_ACCEPTABLE_FACTOR));<a name="line.304"></a>
<span class="sourceLineNo">305</span><a name="line.305"></a>
<span class="sourceLineNo">306</span> // We expect fairness across the two priorities.<a name="line.306"></a>
<span class="sourceLineNo">307</span> // This test makes multi go barely over its limit, in-memory<a name="line.307"></a>
<span class="sourceLineNo">308</span> // empty, and the rest in single. Two single evictions and<a name="line.308"></a>
<span class="sourceLineNo">309</span> // one multi eviction expected.<a name="line.309"></a>
<span class="sourceLineNo">310</span> assertTrue(cache.getBlock(singleBlocks[0].cacheKey, true, false, true) == null);<a name="line.310"></a>
<span class="sourceLineNo">311</span> assertTrue(cache.getBlock(multiBlocks[0].cacheKey, true, false, true) == null);<a name="line.311"></a>
<span class="sourceLineNo">312</span><a name="line.312"></a>
<span class="sourceLineNo">313</span> // And all others to be cached<a name="line.313"></a>
<span class="sourceLineNo">314</span> for (int i = 1; i &lt; 4; i++) {<a name="line.314"></a>
<span class="sourceLineNo">315</span> assertEquals(cache.getBlock(singleBlocks[i].cacheKey, true, false, true), singleBlocks[i]);<a name="line.315"></a>
<span class="sourceLineNo">316</span> assertEquals(cache.getBlock(multiBlocks[i].cacheKey, true, false, true), multiBlocks[i]);<a name="line.316"></a>
<span class="sourceLineNo">317</span> }<a name="line.317"></a>
<span class="sourceLineNo">318</span> }<a name="line.318"></a>
<span class="sourceLineNo">319</span><a name="line.319"></a>
<span class="sourceLineNo">320</span> @Test<a name="line.320"></a>
<span class="sourceLineNo">321</span> public void testCacheEvictionThreePriorities() throws Exception {<a name="line.321"></a>
<span class="sourceLineNo">322</span> long maxSize = 100000;<a name="line.322"></a>
<span class="sourceLineNo">323</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.323"></a>
<span class="sourceLineNo">324</span><a name="line.324"></a>
<span class="sourceLineNo">325</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.325"></a>
<span class="sourceLineNo">326</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.326"></a>
<span class="sourceLineNo">327</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.98f, // min<a name="line.327"></a>
<span class="sourceLineNo">328</span> 0.99f, // acceptable<a name="line.328"></a>
<span class="sourceLineNo">329</span> 0.33f, // single<a name="line.329"></a>
<span class="sourceLineNo">330</span> 0.33f, // multi<a name="line.330"></a>
<span class="sourceLineNo">331</span> 0.34f, // memory<a name="line.331"></a>
<span class="sourceLineNo">332</span> 1.2f, // limit<a name="line.332"></a>
<span class="sourceLineNo">333</span> false, 16 * 1024 * 1024, 10, 500, 0.01f);<a name="line.333"></a>
<span class="sourceLineNo">334</span><a name="line.334"></a>
<span class="sourceLineNo">335</span> CachedItem[] singleBlocks = generateFixedBlocks(5, blockSize, "single");<a name="line.335"></a>
<span class="sourceLineNo">336</span> CachedItem[] multiBlocks = generateFixedBlocks(5, blockSize, "multi");<a name="line.336"></a>
<span class="sourceLineNo">337</span> CachedItem[] memoryBlocks = generateFixedBlocks(5, blockSize, "memory");<a name="line.337"></a>
<span class="sourceLineNo">338</span><a name="line.338"></a>
<span class="sourceLineNo">339</span> long expectedCacheSize = cache.heapSize();<a name="line.339"></a>
<span class="sourceLineNo">340</span><a name="line.340"></a>
<span class="sourceLineNo">341</span> // Add 3 blocks from each priority<a name="line.341"></a>
<span class="sourceLineNo">342</span> for (int i = 0; i &lt; 3; i++) {<a name="line.342"></a>
<span class="sourceLineNo">343</span><a name="line.343"></a>
<span class="sourceLineNo">344</span> // Just add single blocks<a name="line.344"></a>
<span class="sourceLineNo">345</span> cache.cacheBlock(singleBlocks[i].cacheKey, singleBlocks[i]);<a name="line.345"></a>
<span class="sourceLineNo">346</span> expectedCacheSize += singleBlocks[i].cacheBlockHeapSize();<a name="line.346"></a>
<span class="sourceLineNo">347</span><a name="line.347"></a>
<span class="sourceLineNo">348</span> // Add and get multi blocks<a name="line.348"></a>
<span class="sourceLineNo">349</span> cache.cacheBlock(multiBlocks[i].cacheKey, multiBlocks[i]);<a name="line.349"></a>
<span class="sourceLineNo">350</span> expectedCacheSize += multiBlocks[i].cacheBlockHeapSize();<a name="line.350"></a>
<span class="sourceLineNo">351</span> cache.getBlock(multiBlocks[i].cacheKey, true, false, true);<a name="line.351"></a>
<span class="sourceLineNo">352</span><a name="line.352"></a>
<span class="sourceLineNo">353</span> // Add memory blocks as such<a name="line.353"></a>
<span class="sourceLineNo">354</span> cache.cacheBlock(memoryBlocks[i].cacheKey, memoryBlocks[i], true);<a name="line.354"></a>
<span class="sourceLineNo">355</span> expectedCacheSize += memoryBlocks[i].cacheBlockHeapSize();<a name="line.355"></a>
<span class="sourceLineNo">356</span><a name="line.356"></a>
<span class="sourceLineNo">357</span> }<a name="line.357"></a>
<span class="sourceLineNo">358</span><a name="line.358"></a>
<span class="sourceLineNo">359</span> // Do not expect any evictions yet<a name="line.359"></a>
<span class="sourceLineNo">360</span> assertEquals(0, cache.getStats().getEvictionCount());<a name="line.360"></a>
<span class="sourceLineNo">361</span><a name="line.361"></a>
<span class="sourceLineNo">362</span> // Verify cache size<a name="line.362"></a>
<span class="sourceLineNo">363</span> assertEquals(expectedCacheSize, cache.heapSize());<a name="line.363"></a>
<span class="sourceLineNo">364</span><a name="line.364"></a>
<span class="sourceLineNo">365</span> // Insert a single block, oldest single should be evicted<a name="line.365"></a>
<span class="sourceLineNo">366</span> cache.cacheBlock(singleBlocks[3].cacheKey, singleBlocks[3]);<a name="line.366"></a>
<span class="sourceLineNo">367</span><a name="line.367"></a>
<span class="sourceLineNo">368</span> // Single eviction, one thing evicted<a name="line.368"></a>
<span class="sourceLineNo">369</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.369"></a>
<span class="sourceLineNo">370</span> assertEquals(1, cache.getStats().getEvictedCount());<a name="line.370"></a>
<span class="sourceLineNo">371</span><a name="line.371"></a>
<span class="sourceLineNo">372</span> // Verify oldest single block is the one evicted<a name="line.372"></a>
<span class="sourceLineNo">373</span> assertEquals(null, cache.getBlock(singleBlocks[0].cacheKey, true, false, true));<a name="line.373"></a>
<span class="sourceLineNo">374</span><a name="line.374"></a>
<span class="sourceLineNo">375</span> // Change the oldest remaining single block to a multi<a name="line.375"></a>
<span class="sourceLineNo">376</span> cache.getBlock(singleBlocks[1].cacheKey, true, false, true);<a name="line.376"></a>
<span class="sourceLineNo">377</span><a name="line.377"></a>
<span class="sourceLineNo">378</span> // Insert another single block<a name="line.378"></a>
<span class="sourceLineNo">379</span> cache.cacheBlock(singleBlocks[4].cacheKey, singleBlocks[4]);<a name="line.379"></a>
<span class="sourceLineNo">380</span><a name="line.380"></a>
<span class="sourceLineNo">381</span> // Two evictions, two evicted.<a name="line.381"></a>
<span class="sourceLineNo">382</span> assertEquals(2, cache.getStats().getEvictionCount());<a name="line.382"></a>
<span class="sourceLineNo">383</span> assertEquals(2, cache.getStats().getEvictedCount());<a name="line.383"></a>
<span class="sourceLineNo">384</span><a name="line.384"></a>
<span class="sourceLineNo">385</span> // Oldest multi block should be evicted now<a name="line.385"></a>
<span class="sourceLineNo">386</span> assertEquals(null, cache.getBlock(multiBlocks[0].cacheKey, true, false, true));<a name="line.386"></a>
<span class="sourceLineNo">387</span><a name="line.387"></a>
<span class="sourceLineNo">388</span> // Insert another memory block<a name="line.388"></a>
<span class="sourceLineNo">389</span> cache.cacheBlock(memoryBlocks[3].cacheKey, memoryBlocks[3], true);<a name="line.389"></a>
<span class="sourceLineNo">390</span><a name="line.390"></a>
<span class="sourceLineNo">391</span> // Three evictions, three evicted.<a name="line.391"></a>
<span class="sourceLineNo">392</span> assertEquals(3, cache.getStats().getEvictionCount());<a name="line.392"></a>
<span class="sourceLineNo">393</span> assertEquals(3, cache.getStats().getEvictedCount());<a name="line.393"></a>
<span class="sourceLineNo">394</span><a name="line.394"></a>
<span class="sourceLineNo">395</span> // Oldest memory block should be evicted now<a name="line.395"></a>
<span class="sourceLineNo">396</span> assertEquals(null, cache.getBlock(memoryBlocks[0].cacheKey, true, false, true));<a name="line.396"></a>
<span class="sourceLineNo">397</span><a name="line.397"></a>
<span class="sourceLineNo">398</span> // Add a block that is twice as big (should force two evictions)<a name="line.398"></a>
<span class="sourceLineNo">399</span> CachedItem[] bigBlocks = generateFixedBlocks(3, blockSize * 3, "big");<a name="line.399"></a>
<span class="sourceLineNo">400</span> cache.cacheBlock(bigBlocks[0].cacheKey, bigBlocks[0]);<a name="line.400"></a>
<span class="sourceLineNo">401</span><a name="line.401"></a>
<span class="sourceLineNo">402</span> // Four evictions, six evicted (inserted block 3X size, expect +3 evicted)<a name="line.402"></a>
<span class="sourceLineNo">403</span> assertEquals(4, cache.getStats().getEvictionCount());<a name="line.403"></a>
<span class="sourceLineNo">404</span> assertEquals(6, cache.getStats().getEvictedCount());<a name="line.404"></a>
<span class="sourceLineNo">405</span><a name="line.405"></a>
<span class="sourceLineNo">406</span> // Expect three remaining singles to be evicted<a name="line.406"></a>
<span class="sourceLineNo">407</span> assertEquals(null, cache.getBlock(singleBlocks[2].cacheKey, true, false, true));<a name="line.407"></a>
<span class="sourceLineNo">408</span> assertEquals(null, cache.getBlock(singleBlocks[3].cacheKey, true, false, true));<a name="line.408"></a>
<span class="sourceLineNo">409</span> assertEquals(null, cache.getBlock(singleBlocks[4].cacheKey, true, false, true));<a name="line.409"></a>
<span class="sourceLineNo">410</span><a name="line.410"></a>
<span class="sourceLineNo">411</span> // Make the big block a multi block<a name="line.411"></a>
<span class="sourceLineNo">412</span> cache.getBlock(bigBlocks[0].cacheKey, true, false, true);<a name="line.412"></a>
<span class="sourceLineNo">413</span><a name="line.413"></a>
<span class="sourceLineNo">414</span> // Cache another single big block<a name="line.414"></a>
<span class="sourceLineNo">415</span> cache.cacheBlock(bigBlocks[1].cacheKey, bigBlocks[1]);<a name="line.415"></a>
<span class="sourceLineNo">416</span><a name="line.416"></a>
<span class="sourceLineNo">417</span> // Five evictions, nine evicted (3 new)<a name="line.417"></a>
<span class="sourceLineNo">418</span> assertEquals(5, cache.getStats().getEvictionCount());<a name="line.418"></a>
<span class="sourceLineNo">419</span> assertEquals(9, cache.getStats().getEvictedCount());<a name="line.419"></a>
<span class="sourceLineNo">420</span><a name="line.420"></a>
<span class="sourceLineNo">421</span> // Expect three remaining multis to be evicted<a name="line.421"></a>
<span class="sourceLineNo">422</span> assertEquals(null, cache.getBlock(singleBlocks[1].cacheKey, true, false, true));<a name="line.422"></a>
<span class="sourceLineNo">423</span> assertEquals(null, cache.getBlock(multiBlocks[1].cacheKey, true, false, true));<a name="line.423"></a>
<span class="sourceLineNo">424</span> assertEquals(null, cache.getBlock(multiBlocks[2].cacheKey, true, false, true));<a name="line.424"></a>
<span class="sourceLineNo">425</span><a name="line.425"></a>
<span class="sourceLineNo">426</span> // Cache a big memory block<a name="line.426"></a>
<span class="sourceLineNo">427</span> cache.cacheBlock(bigBlocks[2].cacheKey, bigBlocks[2], true);<a name="line.427"></a>
<span class="sourceLineNo">428</span><a name="line.428"></a>
<span class="sourceLineNo">429</span> // Six evictions, twelve evicted (3 new)<a name="line.429"></a>
<span class="sourceLineNo">430</span> assertEquals(6, cache.getStats().getEvictionCount());<a name="line.430"></a>
<span class="sourceLineNo">431</span> assertEquals(12, cache.getStats().getEvictedCount());<a name="line.431"></a>
<span class="sourceLineNo">432</span><a name="line.432"></a>
<span class="sourceLineNo">433</span> // Expect three remaining in-memory to be evicted<a name="line.433"></a>
<span class="sourceLineNo">434</span> assertEquals(null, cache.getBlock(memoryBlocks[1].cacheKey, true, false, true));<a name="line.434"></a>
<span class="sourceLineNo">435</span> assertEquals(null, cache.getBlock(memoryBlocks[2].cacheKey, true, false, true));<a name="line.435"></a>
<span class="sourceLineNo">436</span> assertEquals(null, cache.getBlock(memoryBlocks[3].cacheKey, true, false, true));<a name="line.436"></a>
<span class="sourceLineNo">437</span> }<a name="line.437"></a>
<span class="sourceLineNo">438</span><a name="line.438"></a>
<span class="sourceLineNo">439</span> @Test<a name="line.439"></a>
<span class="sourceLineNo">440</span> public void testCacheEvictionInMemoryForceMode() throws Exception {<a name="line.440"></a>
<span class="sourceLineNo">441</span> long maxSize = 100000;<a name="line.441"></a>
<span class="sourceLineNo">442</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.442"></a>
<span class="sourceLineNo">443</span><a name="line.443"></a>
<span class="sourceLineNo">444</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.444"></a>
<span class="sourceLineNo">445</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.445"></a>
<span class="sourceLineNo">446</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.98f, // min<a name="line.446"></a>
<span class="sourceLineNo">447</span> 0.99f, // acceptable<a name="line.447"></a>
<span class="sourceLineNo">448</span> 0.2f, // single<a name="line.448"></a>
<span class="sourceLineNo">449</span> 0.3f, // multi<a name="line.449"></a>
<span class="sourceLineNo">450</span> 0.5f, // memory<a name="line.450"></a>
<span class="sourceLineNo">451</span> 1.2f, // limit<a name="line.451"></a>
<span class="sourceLineNo">452</span> true, 16 * 1024 * 1024, 10, 500, 0.01f);<a name="line.452"></a>
<span class="sourceLineNo">453</span><a name="line.453"></a>
<span class="sourceLineNo">454</span> CachedItem[] singleBlocks = generateFixedBlocks(10, blockSize, "single");<a name="line.454"></a>
<span class="sourceLineNo">455</span> CachedItem[] multiBlocks = generateFixedBlocks(10, blockSize, "multi");<a name="line.455"></a>
<span class="sourceLineNo">456</span> CachedItem[] memoryBlocks = generateFixedBlocks(10, blockSize, "memory");<a name="line.456"></a>
<span class="sourceLineNo">457</span><a name="line.457"></a>
<span class="sourceLineNo">458</span> long expectedCacheSize = cache.heapSize();<a name="line.458"></a>
<span class="sourceLineNo">459</span><a name="line.459"></a>
<span class="sourceLineNo">460</span> // 0. Add 5 single blocks and 4 multi blocks to make cache full, si:mu:me = 5:4:0<a name="line.460"></a>
<span class="sourceLineNo">461</span> for (int i = 0; i &lt; 4; i++) {<a name="line.461"></a>
<span class="sourceLineNo">462</span> // Just add single blocks<a name="line.462"></a>
<span class="sourceLineNo">463</span> cache.cacheBlock(singleBlocks[i].cacheKey, singleBlocks[i]);<a name="line.463"></a>
<span class="sourceLineNo">464</span> expectedCacheSize += singleBlocks[i].cacheBlockHeapSize();<a name="line.464"></a>
<span class="sourceLineNo">465</span> // Add and get multi blocks<a name="line.465"></a>
<span class="sourceLineNo">466</span> cache.cacheBlock(multiBlocks[i].cacheKey, multiBlocks[i]);<a name="line.466"></a>
<span class="sourceLineNo">467</span> expectedCacheSize += multiBlocks[i].cacheBlockHeapSize();<a name="line.467"></a>
<span class="sourceLineNo">468</span> cache.getBlock(multiBlocks[i].cacheKey, true, false, true);<a name="line.468"></a>
<span class="sourceLineNo">469</span> }<a name="line.469"></a>
<span class="sourceLineNo">470</span> // 5th single block<a name="line.470"></a>
<span class="sourceLineNo">471</span> cache.cacheBlock(singleBlocks[4].cacheKey, singleBlocks[4]);<a name="line.471"></a>
<span class="sourceLineNo">472</span> expectedCacheSize += singleBlocks[4].cacheBlockHeapSize();<a name="line.472"></a>
<span class="sourceLineNo">473</span> // Do not expect any evictions yet<a name="line.473"></a>
<span class="sourceLineNo">474</span> assertEquals(0, cache.getStats().getEvictionCount());<a name="line.474"></a>
<span class="sourceLineNo">475</span> // Verify cache size<a name="line.475"></a>
<span class="sourceLineNo">476</span> assertEquals(expectedCacheSize, cache.heapSize());<a name="line.476"></a>
<span class="sourceLineNo">477</span><a name="line.477"></a>
<span class="sourceLineNo">478</span> // 1. Insert a memory block, oldest single should be evicted, si:mu:me = 4:4:1<a name="line.478"></a>
<span class="sourceLineNo">479</span> cache.cacheBlock(memoryBlocks[0].cacheKey, memoryBlocks[0], true);<a name="line.479"></a>
<span class="sourceLineNo">480</span> // Single eviction, one block evicted<a name="line.480"></a>
<span class="sourceLineNo">481</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.481"></a>
<span class="sourceLineNo">482</span> assertEquals(1, cache.getStats().getEvictedCount());<a name="line.482"></a>
<span class="sourceLineNo">483</span> // Verify oldest single block (index = 0) is the one evicted<a name="line.483"></a>
<span class="sourceLineNo">484</span> assertEquals(null, cache.getBlock(singleBlocks[0].cacheKey, true, false, true));<a name="line.484"></a>
<span class="sourceLineNo">485</span><a name="line.485"></a>
<span class="sourceLineNo">486</span> // 2. Insert another memory block, another single evicted, si:mu:me = 3:4:2<a name="line.486"></a>
<span class="sourceLineNo">487</span> cache.cacheBlock(memoryBlocks[1].cacheKey, memoryBlocks[1], true);<a name="line.487"></a>
<span class="sourceLineNo">488</span> // Two evictions, two evicted.<a name="line.488"></a>
<span class="sourceLineNo">489</span> assertEquals(2, cache.getStats().getEvictionCount());<a name="line.489"></a>
<span class="sourceLineNo">490</span> assertEquals(2, cache.getStats().getEvictedCount());<a name="line.490"></a>
<span class="sourceLineNo">491</span> // Current oldest single block (index = 1) should be evicted now<a name="line.491"></a>
<span class="sourceLineNo">492</span> assertEquals(null, cache.getBlock(singleBlocks[1].cacheKey, true, false, true));<a name="line.492"></a>
<span class="sourceLineNo">493</span><a name="line.493"></a>
<span class="sourceLineNo">494</span> // 3. Insert 4 memory blocks, 2 single and 2 multi evicted, si:mu:me = 1:2:6<a name="line.494"></a>
<span class="sourceLineNo">495</span> cache.cacheBlock(memoryBlocks[2].cacheKey, memoryBlocks[2], true);<a name="line.495"></a>
<span class="sourceLineNo">496</span> cache.cacheBlock(memoryBlocks[3].cacheKey, memoryBlocks[3], true);<a name="line.496"></a>
<span class="sourceLineNo">497</span> cache.cacheBlock(memoryBlocks[4].cacheKey, memoryBlocks[4], true);<a name="line.497"></a>
<span class="sourceLineNo">498</span> cache.cacheBlock(memoryBlocks[5].cacheKey, memoryBlocks[5], true);<a name="line.498"></a>
<span class="sourceLineNo">499</span> // Three evictions, three evicted.<a name="line.499"></a>
<span class="sourceLineNo">500</span> assertEquals(6, cache.getStats().getEvictionCount());<a name="line.500"></a>
<span class="sourceLineNo">501</span> assertEquals(6, cache.getStats().getEvictedCount());<a name="line.501"></a>
<span class="sourceLineNo">502</span> // two oldest single blocks and two oldest multi blocks evicted<a name="line.502"></a>
<span class="sourceLineNo">503</span> assertEquals(null, cache.getBlock(singleBlocks[2].cacheKey, true, false, true));<a name="line.503"></a>
<span class="sourceLineNo">504</span> assertEquals(null, cache.getBlock(singleBlocks[3].cacheKey, true, false, true));<a name="line.504"></a>
<span class="sourceLineNo">505</span> assertEquals(null, cache.getBlock(multiBlocks[0].cacheKey, true, false, true));<a name="line.505"></a>
<span class="sourceLineNo">506</span> assertEquals(null, cache.getBlock(multiBlocks[1].cacheKey, true, false, true));<a name="line.506"></a>
<span class="sourceLineNo">507</span><a name="line.507"></a>
<span class="sourceLineNo">508</span> // 4. Insert 3 memory blocks, the remaining 1 single and 2 multi evicted<a name="line.508"></a>
<span class="sourceLineNo">509</span> // si:mu:me = 0:0:9<a name="line.509"></a>
<span class="sourceLineNo">510</span> cache.cacheBlock(memoryBlocks[6].cacheKey, memoryBlocks[6], true);<a name="line.510"></a>
<span class="sourceLineNo">511</span> cache.cacheBlock(memoryBlocks[7].cacheKey, memoryBlocks[7], true);<a name="line.511"></a>
<span class="sourceLineNo">512</span> cache.cacheBlock(memoryBlocks[8].cacheKey, memoryBlocks[8], true);<a name="line.512"></a>
<span class="sourceLineNo">513</span> // Three evictions, three evicted.<a name="line.513"></a>
<span class="sourceLineNo">514</span> assertEquals(9, cache.getStats().getEvictionCount());<a name="line.514"></a>
<span class="sourceLineNo">515</span> assertEquals(9, cache.getStats().getEvictedCount());<a name="line.515"></a>
<span class="sourceLineNo">516</span> // one oldest single block and two oldest multi blocks evicted<a name="line.516"></a>
<span class="sourceLineNo">517</span> assertEquals(null, cache.getBlock(singleBlocks[4].cacheKey, true, false, true));<a name="line.517"></a>
<span class="sourceLineNo">518</span> assertEquals(null, cache.getBlock(multiBlocks[2].cacheKey, true, false, true));<a name="line.518"></a>
<span class="sourceLineNo">519</span> assertEquals(null, cache.getBlock(multiBlocks[3].cacheKey, true, false, true));<a name="line.519"></a>
<span class="sourceLineNo">520</span><a name="line.520"></a>
<span class="sourceLineNo">521</span> // 5. Insert one memory block, the oldest memory evicted<a name="line.521"></a>
<span class="sourceLineNo">522</span> // si:mu:me = 0:0:9<a name="line.522"></a>
<span class="sourceLineNo">523</span> cache.cacheBlock(memoryBlocks[9].cacheKey, memoryBlocks[9], true);<a name="line.523"></a>
<span class="sourceLineNo">524</span> // one eviction, one evicted.<a name="line.524"></a>
<span class="sourceLineNo">525</span> assertEquals(10, cache.getStats().getEvictionCount());<a name="line.525"></a>
<span class="sourceLineNo">526</span> assertEquals(10, cache.getStats().getEvictedCount());<a name="line.526"></a>
<span class="sourceLineNo">527</span> // oldest memory block evicted<a name="line.527"></a>
<span class="sourceLineNo">528</span> assertEquals(null, cache.getBlock(memoryBlocks[0].cacheKey, true, false, true));<a name="line.528"></a>
<span class="sourceLineNo">529</span><a name="line.529"></a>
<span class="sourceLineNo">530</span> // 6. Insert one new single block, itself evicted immediately since<a name="line.530"></a>
<span class="sourceLineNo">531</span> // all blocks in cache are memory-type which have higher priority<a name="line.531"></a>
<span class="sourceLineNo">532</span> // si:mu:me = 0:0:9 (no change)<a name="line.532"></a>
<span class="sourceLineNo">533</span> cache.cacheBlock(singleBlocks[9].cacheKey, singleBlocks[9]);<a name="line.533"></a>
<span class="sourceLineNo">534</span> // one eviction, one evicted.<a name="line.534"></a>
<span class="sourceLineNo">535</span> assertEquals(11, cache.getStats().getEvictionCount());<a name="line.535"></a>
<span class="sourceLineNo">536</span> assertEquals(11, cache.getStats().getEvictedCount());<a name="line.536"></a>
<span class="sourceLineNo">537</span> // the single block just cached now evicted (can't evict memory)<a name="line.537"></a>
<span class="sourceLineNo">538</span> assertEquals(null, cache.getBlock(singleBlocks[9].cacheKey, true, false, true));<a name="line.538"></a>
<span class="sourceLineNo">539</span> }<a name="line.539"></a>
<span class="sourceLineNo">540</span><a name="line.540"></a>
<span class="sourceLineNo">541</span> // test scan resistance<a name="line.541"></a>
<span class="sourceLineNo">542</span> @Test<a name="line.542"></a>
<span class="sourceLineNo">543</span> public void testScanResistance() throws Exception {<a name="line.543"></a>
<span class="sourceLineNo">544</span><a name="line.544"></a>
<span class="sourceLineNo">545</span> long maxSize = 100000;<a name="line.545"></a>
<span class="sourceLineNo">546</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.546"></a>
<span class="sourceLineNo">547</span><a name="line.547"></a>
<span class="sourceLineNo">548</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.548"></a>
<span class="sourceLineNo">549</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.549"></a>
<span class="sourceLineNo">550</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.66f, // min<a name="line.550"></a>
<span class="sourceLineNo">551</span> 0.99f, // acceptable<a name="line.551"></a>
<span class="sourceLineNo">552</span> 0.33f, // single<a name="line.552"></a>
<span class="sourceLineNo">553</span> 0.33f, // multi<a name="line.553"></a>
<span class="sourceLineNo">554</span> 0.34f, // memory<a name="line.554"></a>
<span class="sourceLineNo">555</span> 1.2f, // limit<a name="line.555"></a>
<span class="sourceLineNo">556</span> false, 16 * 1024 * 1024, 10, 500, 0.01f);<a name="line.556"></a>
<span class="sourceLineNo">557</span><a name="line.557"></a>
<span class="sourceLineNo">558</span> CachedItem[] singleBlocks = generateFixedBlocks(20, blockSize, "single");<a name="line.558"></a>
<span class="sourceLineNo">559</span> CachedItem[] multiBlocks = generateFixedBlocks(5, blockSize, "multi");<a name="line.559"></a>
<span class="sourceLineNo">560</span><a name="line.560"></a>
<span class="sourceLineNo">561</span> // Add 5 multi blocks<a name="line.561"></a>
<span class="sourceLineNo">562</span> for (CachedItem block : multiBlocks) {<a name="line.562"></a>
<span class="sourceLineNo">563</span> cache.cacheBlock(block.cacheKey, block);<a name="line.563"></a>
<span class="sourceLineNo">564</span> cache.getBlock(block.cacheKey, true, false, true);<a name="line.564"></a>
<span class="sourceLineNo">565</span> }<a name="line.565"></a>
<span class="sourceLineNo">566</span><a name="line.566"></a>
<span class="sourceLineNo">567</span> // Add 5 single blocks<a name="line.567"></a>
<span class="sourceLineNo">568</span> for (int i = 0; i &lt; 5; i++) {<a name="line.568"></a>
<span class="sourceLineNo">569</span> cache.cacheBlock(singleBlocks[i].cacheKey, singleBlocks[i]);<a name="line.569"></a>
<span class="sourceLineNo">570</span> }<a name="line.570"></a>
<span class="sourceLineNo">571</span><a name="line.571"></a>
<span class="sourceLineNo">572</span> // An eviction ran<a name="line.572"></a>
<span class="sourceLineNo">573</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.573"></a>
<span class="sourceLineNo">574</span><a name="line.574"></a>
<span class="sourceLineNo">575</span> // To drop down to 2/3 capacity, we'll need to evict 4 blocks<a name="line.575"></a>
<span class="sourceLineNo">576</span> assertEquals(4, cache.getStats().getEvictedCount());<a name="line.576"></a>
<span class="sourceLineNo">577</span><a name="line.577"></a>
<span class="sourceLineNo">578</span> // Should have been taken off equally from single and multi<a name="line.578"></a>
<span class="sourceLineNo">579</span> assertEquals(null, cache.getBlock(singleBlocks[0].cacheKey, true, false, true));<a name="line.579"></a>
<span class="sourceLineNo">580</span> assertEquals(null, cache.getBlock(singleBlocks[1].cacheKey, true, false, true));<a name="line.580"></a>
<span class="sourceLineNo">581</span> assertEquals(null, cache.getBlock(multiBlocks[0].cacheKey, true, false, true));<a name="line.581"></a>
<span class="sourceLineNo">582</span> assertEquals(null, cache.getBlock(multiBlocks[1].cacheKey, true, false, true));<a name="line.582"></a>
<span class="sourceLineNo">583</span><a name="line.583"></a>
<span class="sourceLineNo">584</span> // Let's keep "scanning" by adding single blocks. From here on we only<a name="line.584"></a>
<span class="sourceLineNo">585</span> // expect evictions from the single bucket.<a name="line.585"></a>
<span class="sourceLineNo">586</span><a name="line.586"></a>
<span class="sourceLineNo">587</span> // Every time we reach 10 total blocks (every 4 inserts) we get 4 single<a name="line.587"></a>
<span class="sourceLineNo">588</span> // blocks evicted. Inserting 13 blocks should yield 3 more evictions and<a name="line.588"></a>
<span class="sourceLineNo">589</span> // 12 more evicted.<a name="line.589"></a>
<span class="sourceLineNo">590</span><a name="line.590"></a>
<span class="sourceLineNo">591</span> for (int i = 5; i &lt; 18; i++) {<a name="line.591"></a>
<span class="sourceLineNo">592</span> cache.cacheBlock(singleBlocks[i].cacheKey, singleBlocks[i]);<a name="line.592"></a>
<span class="sourceLineNo">593</span> }<a name="line.593"></a>
<span class="sourceLineNo">594</span><a name="line.594"></a>
<span class="sourceLineNo">595</span> // 4 total evictions, 16 total evicted<a name="line.595"></a>
<span class="sourceLineNo">596</span> assertEquals(4, cache.getStats().getEvictionCount());<a name="line.596"></a>
<span class="sourceLineNo">597</span> assertEquals(16, cache.getStats().getEvictedCount());<a name="line.597"></a>
<span class="sourceLineNo">598</span><a name="line.598"></a>
<span class="sourceLineNo">599</span> // Should now have 7 total blocks<a name="line.599"></a>
<span class="sourceLineNo">600</span> assertEquals(7, cache.getBlockCount());<a name="line.600"></a>
<span class="sourceLineNo">601</span><a name="line.601"></a>
<span class="sourceLineNo">602</span> }<a name="line.602"></a>
<span class="sourceLineNo">603</span><a name="line.603"></a>
<span class="sourceLineNo">604</span> @Test<a name="line.604"></a>
<span class="sourceLineNo">605</span> public void testMaxBlockSize() throws Exception {<a name="line.605"></a>
<span class="sourceLineNo">606</span> long maxSize = 100000;<a name="line.606"></a>
<span class="sourceLineNo">607</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.607"></a>
<span class="sourceLineNo">608</span><a name="line.608"></a>
<span class="sourceLineNo">609</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.609"></a>
<span class="sourceLineNo">610</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.610"></a>
<span class="sourceLineNo">611</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.66f, // min<a name="line.611"></a>
<span class="sourceLineNo">612</span> 0.99f, // acceptable<a name="line.612"></a>
<span class="sourceLineNo">613</span> 0.33f, // single<a name="line.613"></a>
<span class="sourceLineNo">614</span> 0.33f, // multi<a name="line.614"></a>
<span class="sourceLineNo">615</span> 0.34f, // memory<a name="line.615"></a>
<span class="sourceLineNo">616</span> 1.2f, // limit<a name="line.616"></a>
<span class="sourceLineNo">617</span> false, 1024, 10, 500, 0.01f);<a name="line.617"></a>
<span class="sourceLineNo">618</span><a name="line.618"></a>
<span class="sourceLineNo">619</span> CachedItem[] tooLong = generateFixedBlocks(10, 1024 + 5, "long");<a name="line.619"></a>
<span class="sourceLineNo">620</span> CachedItem[] small = generateFixedBlocks(15, 600, "small");<a name="line.620"></a>
<span class="sourceLineNo">621</span><a name="line.621"></a>
<span class="sourceLineNo">622</span> for (CachedItem i : tooLong) {<a name="line.622"></a>
<span class="sourceLineNo">623</span> cache.cacheBlock(i.cacheKey, i);<a name="line.623"></a>
<span class="sourceLineNo">624</span> }<a name="line.624"></a>
<span class="sourceLineNo">625</span> for (CachedItem i : small) {<a name="line.625"></a>
<span class="sourceLineNo">626</span> cache.cacheBlock(i.cacheKey, i);<a name="line.626"></a>
<span class="sourceLineNo">627</span> }<a name="line.627"></a>
<span class="sourceLineNo">628</span> assertEquals(15, cache.getBlockCount());<a name="line.628"></a>
<span class="sourceLineNo">629</span> for (CachedItem i : small) {<a name="line.629"></a>
<span class="sourceLineNo">630</span> assertNotNull(cache.getBlock(i.cacheKey, true, false, false));<a name="line.630"></a>
<span class="sourceLineNo">631</span> }<a name="line.631"></a>
<span class="sourceLineNo">632</span> for (CachedItem i : tooLong) {<a name="line.632"></a>
<span class="sourceLineNo">633</span> assertNull(cache.getBlock(i.cacheKey, true, false, false));<a name="line.633"></a>
<span class="sourceLineNo">634</span> }<a name="line.634"></a>
<span class="sourceLineNo">635</span><a name="line.635"></a>
<span class="sourceLineNo">636</span> assertEquals(10, cache.getStats().getFailedInserts());<a name="line.636"></a>
<span class="sourceLineNo">637</span> }<a name="line.637"></a>
<span class="sourceLineNo">638</span><a name="line.638"></a>
<span class="sourceLineNo">639</span> // test setMaxSize<a name="line.639"></a>
<span class="sourceLineNo">640</span> @Test<a name="line.640"></a>
<span class="sourceLineNo">641</span> public void testResizeBlockCache() throws Exception {<a name="line.641"></a>
<span class="sourceLineNo">642</span> long maxSize = 300000;<a name="line.642"></a>
<span class="sourceLineNo">643</span> long blockSize = calculateBlockSize(maxSize, 31);<a name="line.643"></a>
<span class="sourceLineNo">644</span><a name="line.644"></a>
<span class="sourceLineNo">645</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.645"></a>
<span class="sourceLineNo">646</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.646"></a>
<span class="sourceLineNo">647</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.98f, // min<a name="line.647"></a>
<span class="sourceLineNo">648</span> 0.99f, // acceptable<a name="line.648"></a>
<span class="sourceLineNo">649</span> 0.33f, // single<a name="line.649"></a>
<span class="sourceLineNo">650</span> 0.33f, // multi<a name="line.650"></a>
<span class="sourceLineNo">651</span> 0.34f, // memory<a name="line.651"></a>
<span class="sourceLineNo">652</span> 1.2f, // limit<a name="line.652"></a>
<span class="sourceLineNo">653</span> false, 16 * 1024 * 1024, 10, 500, 0.01f);<a name="line.653"></a>
<span class="sourceLineNo">654</span><a name="line.654"></a>
<span class="sourceLineNo">655</span> CachedItem[] singleBlocks = generateFixedBlocks(10, blockSize, "single");<a name="line.655"></a>
<span class="sourceLineNo">656</span> CachedItem[] multiBlocks = generateFixedBlocks(10, blockSize, "multi");<a name="line.656"></a>
<span class="sourceLineNo">657</span> CachedItem[] memoryBlocks = generateFixedBlocks(10, blockSize, "memory");<a name="line.657"></a>
<span class="sourceLineNo">658</span><a name="line.658"></a>
<span class="sourceLineNo">659</span> // Add all blocks from all priorities<a name="line.659"></a>
<span class="sourceLineNo">660</span> for (int i = 0; i &lt; 10; i++) {<a name="line.660"></a>
<span class="sourceLineNo">661</span> // Just add single blocks<a name="line.661"></a>
<span class="sourceLineNo">662</span> cache.cacheBlock(singleBlocks[i].cacheKey, singleBlocks[i]);<a name="line.662"></a>
<span class="sourceLineNo">663</span><a name="line.663"></a>
<span class="sourceLineNo">664</span> // Add and get multi blocks<a name="line.664"></a>
<span class="sourceLineNo">665</span> cache.cacheBlock(multiBlocks[i].cacheKey, multiBlocks[i]);<a name="line.665"></a>
<span class="sourceLineNo">666</span> cache.getBlock(multiBlocks[i].cacheKey, true, false, true);<a name="line.666"></a>
<span class="sourceLineNo">667</span><a name="line.667"></a>
<span class="sourceLineNo">668</span> // Add memory blocks as such<a name="line.668"></a>
<span class="sourceLineNo">669</span> cache.cacheBlock(memoryBlocks[i].cacheKey, memoryBlocks[i], true);<a name="line.669"></a>
<span class="sourceLineNo">670</span> }<a name="line.670"></a>
<span class="sourceLineNo">671</span><a name="line.671"></a>
<span class="sourceLineNo">672</span> // Do not expect any evictions yet<a name="line.672"></a>
<span class="sourceLineNo">673</span> assertEquals(0, cache.getStats().getEvictionCount());<a name="line.673"></a>
<span class="sourceLineNo">674</span><a name="line.674"></a>
<span class="sourceLineNo">675</span> // Resize to half capacity plus an extra block (otherwise we evict an extra)<a name="line.675"></a>
<span class="sourceLineNo">676</span> cache.setMaxSize((long) (maxSize * 0.5f));<a name="line.676"></a>
<span class="sourceLineNo">677</span><a name="line.677"></a>
<span class="sourceLineNo">678</span> // Should have run a single eviction<a name="line.678"></a>
<span class="sourceLineNo">679</span> assertEquals(1, cache.getStats().getEvictionCount());<a name="line.679"></a>
<span class="sourceLineNo">680</span><a name="line.680"></a>
<span class="sourceLineNo">681</span> // And we expect 1/2 of the blocks to be evicted<a name="line.681"></a>
<span class="sourceLineNo">682</span> assertEquals(15, cache.getStats().getEvictedCount());<a name="line.682"></a>
<span class="sourceLineNo">683</span><a name="line.683"></a>
<span class="sourceLineNo">684</span> // And the oldest 5 blocks from each category should be gone<a name="line.684"></a>
<span class="sourceLineNo">685</span> for (int i = 0; i &lt; 5; i++) {<a name="line.685"></a>
<span class="sourceLineNo">686</span> assertEquals(null, cache.getBlock(singleBlocks[i].cacheKey, true, false, true));<a name="line.686"></a>
<span class="sourceLineNo">687</span> assertEquals(null, cache.getBlock(multiBlocks[i].cacheKey, true, false, true));<a name="line.687"></a>
<span class="sourceLineNo">688</span> assertEquals(null, cache.getBlock(memoryBlocks[i].cacheKey, true, false, true));<a name="line.688"></a>
<span class="sourceLineNo">689</span> }<a name="line.689"></a>
<span class="sourceLineNo">690</span><a name="line.690"></a>
<span class="sourceLineNo">691</span> // And the newest 5 blocks should still be accessible<a name="line.691"></a>
<span class="sourceLineNo">692</span> for (int i = 5; i &lt; 10; i++) {<a name="line.692"></a>
<span class="sourceLineNo">693</span> assertEquals(singleBlocks[i], cache.getBlock(singleBlocks[i].cacheKey, true, false, true));<a name="line.693"></a>
<span class="sourceLineNo">694</span> assertEquals(multiBlocks[i], cache.getBlock(multiBlocks[i].cacheKey, true, false, true));<a name="line.694"></a>
<span class="sourceLineNo">695</span> assertEquals(memoryBlocks[i], cache.getBlock(memoryBlocks[i].cacheKey, true, false, true));<a name="line.695"></a>
<span class="sourceLineNo">696</span> }<a name="line.696"></a>
<span class="sourceLineNo">697</span> }<a name="line.697"></a>
<span class="sourceLineNo">698</span><a name="line.698"></a>
<span class="sourceLineNo">699</span> // test metricsPastNPeriods<a name="line.699"></a>
<span class="sourceLineNo">700</span> @Test<a name="line.700"></a>
<span class="sourceLineNo">701</span> public void testPastNPeriodsMetrics() throws Exception {<a name="line.701"></a>
<span class="sourceLineNo">702</span> double delta = 0.01;<a name="line.702"></a>
<span class="sourceLineNo">703</span><a name="line.703"></a>
<span class="sourceLineNo">704</span> // 3 total periods<a name="line.704"></a>
<span class="sourceLineNo">705</span> CacheStats stats = new CacheStats("test", 3);<a name="line.705"></a>
<span class="sourceLineNo">706</span><a name="line.706"></a>
<span class="sourceLineNo">707</span> // No accesses, should be 0<a name="line.707"></a>
<span class="sourceLineNo">708</span> stats.rollMetricsPeriod();<a name="line.708"></a>
<span class="sourceLineNo">709</span> assertEquals(0.0, stats.getHitRatioPastNPeriods(), delta);<a name="line.709"></a>
<span class="sourceLineNo">710</span> assertEquals(0.0, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.710"></a>
<span class="sourceLineNo">711</span><a name="line.711"></a>
<span class="sourceLineNo">712</span> // period 1, 1 hit caching, 1 hit non-caching, 2 miss non-caching<a name="line.712"></a>
<span class="sourceLineNo">713</span> // should be (2/4)=0.5 and (1/1)=1<a name="line.713"></a>
<span class="sourceLineNo">714</span> stats.hit(false, true, BlockType.DATA);<a name="line.714"></a>
<span class="sourceLineNo">715</span> stats.hit(true, true, BlockType.DATA);<a name="line.715"></a>
<span class="sourceLineNo">716</span> stats.miss(false, false, BlockType.DATA);<a name="line.716"></a>
<span class="sourceLineNo">717</span> stats.miss(false, false, BlockType.DATA);<a name="line.717"></a>
<span class="sourceLineNo">718</span> stats.rollMetricsPeriod();<a name="line.718"></a>
<span class="sourceLineNo">719</span> assertEquals(0.5, stats.getHitRatioPastNPeriods(), delta);<a name="line.719"></a>
<span class="sourceLineNo">720</span> assertEquals(1.0, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.720"></a>
<span class="sourceLineNo">721</span><a name="line.721"></a>
<span class="sourceLineNo">722</span> // period 2, 1 miss caching, 3 miss non-caching<a name="line.722"></a>
<span class="sourceLineNo">723</span> // should be (2/8)=0.25 and (1/2)=0.5<a name="line.723"></a>
<span class="sourceLineNo">724</span> stats.miss(true, false, BlockType.DATA);<a name="line.724"></a>
<span class="sourceLineNo">725</span> stats.miss(false, false, BlockType.DATA);<a name="line.725"></a>
<span class="sourceLineNo">726</span> stats.miss(false, false, BlockType.DATA);<a name="line.726"></a>
<span class="sourceLineNo">727</span> stats.miss(false, false, BlockType.DATA);<a name="line.727"></a>
<span class="sourceLineNo">728</span> stats.rollMetricsPeriod();<a name="line.728"></a>
<span class="sourceLineNo">729</span> assertEquals(0.25, stats.getHitRatioPastNPeriods(), delta);<a name="line.729"></a>
<span class="sourceLineNo">730</span> assertEquals(0.5, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.730"></a>
<span class="sourceLineNo">731</span><a name="line.731"></a>
<span class="sourceLineNo">732</span> // period 3, 2 hits of each type<a name="line.732"></a>
<span class="sourceLineNo">733</span> // should be (6/12)=0.5 and (3/4)=0.75<a name="line.733"></a>
<span class="sourceLineNo">734</span> stats.hit(false, true, BlockType.DATA);<a name="line.734"></a>
<span class="sourceLineNo">735</span> stats.hit(true, true, BlockType.DATA);<a name="line.735"></a>
<span class="sourceLineNo">736</span> stats.hit(false, true, BlockType.DATA);<a name="line.736"></a>
<span class="sourceLineNo">737</span> stats.hit(true, true, BlockType.DATA);<a name="line.737"></a>
<span class="sourceLineNo">738</span> stats.rollMetricsPeriod();<a name="line.738"></a>
<span class="sourceLineNo">739</span> assertEquals(0.5, stats.getHitRatioPastNPeriods(), delta);<a name="line.739"></a>
<span class="sourceLineNo">740</span> assertEquals(0.75, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.740"></a>
<span class="sourceLineNo">741</span><a name="line.741"></a>
<span class="sourceLineNo">742</span> // period 4, evict period 1, two caching misses<a name="line.742"></a>
<span class="sourceLineNo">743</span> // should be (4/10)=0.4 and (2/5)=0.4<a name="line.743"></a>
<span class="sourceLineNo">744</span> stats.miss(true, false, BlockType.DATA);<a name="line.744"></a>
<span class="sourceLineNo">745</span> stats.miss(true, false, BlockType.DATA);<a name="line.745"></a>
<span class="sourceLineNo">746</span> stats.rollMetricsPeriod();<a name="line.746"></a>
<span class="sourceLineNo">747</span> assertEquals(0.4, stats.getHitRatioPastNPeriods(), delta);<a name="line.747"></a>
<span class="sourceLineNo">748</span> assertEquals(0.4, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.748"></a>
<span class="sourceLineNo">749</span><a name="line.749"></a>
<span class="sourceLineNo">750</span> // period 5, evict period 2, 2 caching misses, 2 non-caching hit<a name="line.750"></a>
<span class="sourceLineNo">751</span> // should be (6/10)=0.6 and (2/6)=1/3<a name="line.751"></a>
<span class="sourceLineNo">752</span> stats.miss(true, false, BlockType.DATA);<a name="line.752"></a>
<span class="sourceLineNo">753</span> stats.miss(true, false, BlockType.DATA);<a name="line.753"></a>
<span class="sourceLineNo">754</span> stats.hit(false, true, BlockType.DATA);<a name="line.754"></a>
<span class="sourceLineNo">755</span> stats.hit(false, true, BlockType.DATA);<a name="line.755"></a>
<span class="sourceLineNo">756</span> stats.rollMetricsPeriod();<a name="line.756"></a>
<span class="sourceLineNo">757</span> assertEquals(0.6, stats.getHitRatioPastNPeriods(), delta);<a name="line.757"></a>
<span class="sourceLineNo">758</span> assertEquals((double) 1 / 3, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.758"></a>
<span class="sourceLineNo">759</span><a name="line.759"></a>
<span class="sourceLineNo">760</span> // period 6, evict period 3<a name="line.760"></a>
<span class="sourceLineNo">761</span> // should be (2/6)=1/3 and (0/4)=0<a name="line.761"></a>
<span class="sourceLineNo">762</span> stats.rollMetricsPeriod();<a name="line.762"></a>
<span class="sourceLineNo">763</span> assertEquals((double) 1 / 3, stats.getHitRatioPastNPeriods(), delta);<a name="line.763"></a>
<span class="sourceLineNo">764</span> assertEquals(0.0, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.764"></a>
<span class="sourceLineNo">765</span><a name="line.765"></a>
<span class="sourceLineNo">766</span> // period 7, evict period 4<a name="line.766"></a>
<span class="sourceLineNo">767</span> // should be (2/4)=0.5 and (0/2)=0<a name="line.767"></a>
<span class="sourceLineNo">768</span> stats.rollMetricsPeriod();<a name="line.768"></a>
<span class="sourceLineNo">769</span> assertEquals(0.5, stats.getHitRatioPastNPeriods(), delta);<a name="line.769"></a>
<span class="sourceLineNo">770</span> assertEquals(0.0, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.770"></a>
<span class="sourceLineNo">771</span><a name="line.771"></a>
<span class="sourceLineNo">772</span> // period 8, evict period 5<a name="line.772"></a>
<span class="sourceLineNo">773</span> // should be 0 and 0<a name="line.773"></a>
<span class="sourceLineNo">774</span> stats.rollMetricsPeriod();<a name="line.774"></a>
<span class="sourceLineNo">775</span> assertEquals(0.0, stats.getHitRatioPastNPeriods(), delta);<a name="line.775"></a>
<span class="sourceLineNo">776</span> assertEquals(0.0, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.776"></a>
<span class="sourceLineNo">777</span><a name="line.777"></a>
<span class="sourceLineNo">778</span> // period 9, one of each<a name="line.778"></a>
<span class="sourceLineNo">779</span> // should be (2/4)=0.5 and (1/2)=0.5<a name="line.779"></a>
<span class="sourceLineNo">780</span> stats.miss(true, false, BlockType.DATA);<a name="line.780"></a>
<span class="sourceLineNo">781</span> stats.miss(false, false, BlockType.DATA);<a name="line.781"></a>
<span class="sourceLineNo">782</span> stats.hit(true, true, BlockType.DATA);<a name="line.782"></a>
<span class="sourceLineNo">783</span> stats.hit(false, true, BlockType.DATA);<a name="line.783"></a>
<span class="sourceLineNo">784</span> stats.rollMetricsPeriod();<a name="line.784"></a>
<span class="sourceLineNo">785</span> assertEquals(0.5, stats.getHitRatioPastNPeriods(), delta);<a name="line.785"></a>
<span class="sourceLineNo">786</span> assertEquals(0.5, stats.getHitCachingRatioPastNPeriods(), delta);<a name="line.786"></a>
<span class="sourceLineNo">787</span> }<a name="line.787"></a>
<span class="sourceLineNo">788</span><a name="line.788"></a>
<span class="sourceLineNo">789</span> @Test<a name="line.789"></a>
<span class="sourceLineNo">790</span> public void testCacheBlockNextBlockMetadataMissing() {<a name="line.790"></a>
<span class="sourceLineNo">791</span> long maxSize = 100000;<a name="line.791"></a>
<span class="sourceLineNo">792</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.792"></a>
<span class="sourceLineNo">793</span> int size = 100;<a name="line.793"></a>
<span class="sourceLineNo">794</span> int length = HConstants.HFILEBLOCK_HEADER_SIZE + size;<a name="line.794"></a>
<span class="sourceLineNo">795</span> byte[] byteArr = new byte[length];<a name="line.795"></a>
<span class="sourceLineNo">796</span> ByteBuffer buf = ByteBuffer.wrap(byteArr, 0, size);<a name="line.796"></a>
<span class="sourceLineNo">797</span> HFileContext meta = new HFileContextBuilder().build();<a name="line.797"></a>
<span class="sourceLineNo">798</span> HFileBlock blockWithNextBlockMetadata = new HFileBlock(BlockType.DATA, size, size, -1,<a name="line.798"></a>
<span class="sourceLineNo">799</span> ByteBuff.wrap(buf), HFileBlock.FILL_HEADER, -1, 52, -1, meta, HEAP);<a name="line.799"></a>
<span class="sourceLineNo">800</span> HFileBlock blockWithoutNextBlockMetadata = new HFileBlock(BlockType.DATA, size, size, -1,<a name="line.800"></a>
<span class="sourceLineNo">801</span> ByteBuff.wrap(buf), HFileBlock.FILL_HEADER, -1, -1, -1, meta, HEAP);<a name="line.801"></a>
<span class="sourceLineNo">802</span><a name="line.802"></a>
<span class="sourceLineNo">803</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.803"></a>
<span class="sourceLineNo">804</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.804"></a>
<span class="sourceLineNo">805</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.66f, // min<a name="line.805"></a>
<span class="sourceLineNo">806</span> 0.99f, // acceptable<a name="line.806"></a>
<span class="sourceLineNo">807</span> 0.33f, // single<a name="line.807"></a>
<span class="sourceLineNo">808</span> 0.33f, // multi<a name="line.808"></a>
<span class="sourceLineNo">809</span> 0.34f, // memory<a name="line.809"></a>
<span class="sourceLineNo">810</span> 1.2f, // limit<a name="line.810"></a>
<span class="sourceLineNo">811</span> false, 1024, 10, 500, 0.01f);<a name="line.811"></a>
<span class="sourceLineNo">812</span><a name="line.812"></a>
<span class="sourceLineNo">813</span> BlockCacheKey key = new BlockCacheKey("key1", 0);<a name="line.813"></a>
<span class="sourceLineNo">814</span> ByteBuffer actualBuffer = ByteBuffer.allocate(length);<a name="line.814"></a>
<span class="sourceLineNo">815</span> ByteBuffer block1Buffer = ByteBuffer.allocate(length);<a name="line.815"></a>
<span class="sourceLineNo">816</span> ByteBuffer block2Buffer = ByteBuffer.allocate(length);<a name="line.816"></a>
<span class="sourceLineNo">817</span> blockWithNextBlockMetadata.serialize(block1Buffer, true);<a name="line.817"></a>
<span class="sourceLineNo">818</span> blockWithoutNextBlockMetadata.serialize(block2Buffer, true);<a name="line.818"></a>
<span class="sourceLineNo">819</span><a name="line.819"></a>
<span class="sourceLineNo">820</span> // Add blockWithNextBlockMetadata, expect blockWithNextBlockMetadata back.<a name="line.820"></a>
<span class="sourceLineNo">821</span> CacheTestUtils.getBlockAndAssertEquals(cache, key, blockWithNextBlockMetadata, actualBuffer,<a name="line.821"></a>
<span class="sourceLineNo">822</span> block1Buffer);<a name="line.822"></a>
<span class="sourceLineNo">823</span><a name="line.823"></a>
<span class="sourceLineNo">824</span> // Add blockWithoutNextBlockMetada, expect blockWithNextBlockMetadata back.<a name="line.824"></a>
<span class="sourceLineNo">825</span> CacheTestUtils.getBlockAndAssertEquals(cache, key, blockWithoutNextBlockMetadata, actualBuffer,<a name="line.825"></a>
<span class="sourceLineNo">826</span> block1Buffer);<a name="line.826"></a>
<span class="sourceLineNo">827</span><a name="line.827"></a>
<span class="sourceLineNo">828</span> // Clear and add blockWithoutNextBlockMetadata<a name="line.828"></a>
<span class="sourceLineNo">829</span> cache.clearCache();<a name="line.829"></a>
<span class="sourceLineNo">830</span> assertNull(cache.getBlock(key, false, false, false));<a name="line.830"></a>
<span class="sourceLineNo">831</span> CacheTestUtils.getBlockAndAssertEquals(cache, key, blockWithoutNextBlockMetadata, actualBuffer,<a name="line.831"></a>
<span class="sourceLineNo">832</span> block2Buffer);<a name="line.832"></a>
<span class="sourceLineNo">833</span><a name="line.833"></a>
<span class="sourceLineNo">834</span> // Add blockWithNextBlockMetadata, expect blockWithNextBlockMetadata to replace.<a name="line.834"></a>
<span class="sourceLineNo">835</span> CacheTestUtils.getBlockAndAssertEquals(cache, key, blockWithNextBlockMetadata, actualBuffer,<a name="line.835"></a>
<span class="sourceLineNo">836</span> block1Buffer);<a name="line.836"></a>
<span class="sourceLineNo">837</span> }<a name="line.837"></a>
<span class="sourceLineNo">838</span><a name="line.838"></a>
<span class="sourceLineNo">839</span> private CachedItem[] generateFixedBlocks(int numBlocks, int size, String pfx) {<a name="line.839"></a>
<span class="sourceLineNo">840</span> CachedItem[] blocks = new CachedItem[numBlocks];<a name="line.840"></a>
<span class="sourceLineNo">841</span> for (int i = 0; i &lt; numBlocks; i++) {<a name="line.841"></a>
<span class="sourceLineNo">842</span> blocks[i] = new CachedItem(pfx + i, size);<a name="line.842"></a>
<span class="sourceLineNo">843</span> }<a name="line.843"></a>
<span class="sourceLineNo">844</span> return blocks;<a name="line.844"></a>
<span class="sourceLineNo">845</span> }<a name="line.845"></a>
<span class="sourceLineNo">846</span><a name="line.846"></a>
<span class="sourceLineNo">847</span> private CachedItem[] generateFixedBlocks(int numBlocks, long size, String pfx) {<a name="line.847"></a>
<span class="sourceLineNo">848</span> return generateFixedBlocks(numBlocks, (int) size, pfx);<a name="line.848"></a>
<span class="sourceLineNo">849</span> }<a name="line.849"></a>
<span class="sourceLineNo">850</span><a name="line.850"></a>
<span class="sourceLineNo">851</span> private CachedItem[] generateRandomBlocks(int numBlocks, long maxSize) {<a name="line.851"></a>
<span class="sourceLineNo">852</span> CachedItem[] blocks = new CachedItem[numBlocks];<a name="line.852"></a>
<span class="sourceLineNo">853</span> Random rand = ThreadLocalRandom.current();<a name="line.853"></a>
<span class="sourceLineNo">854</span> for (int i = 0; i &lt; numBlocks; i++) {<a name="line.854"></a>
<span class="sourceLineNo">855</span> blocks[i] = new CachedItem("block" + i, rand.nextInt((int) maxSize) + 1);<a name="line.855"></a>
<span class="sourceLineNo">856</span> }<a name="line.856"></a>
<span class="sourceLineNo">857</span> return blocks;<a name="line.857"></a>
<span class="sourceLineNo">858</span> }<a name="line.858"></a>
<span class="sourceLineNo">859</span><a name="line.859"></a>
<span class="sourceLineNo">860</span> private long calculateBlockSize(long maxSize, int numBlocks) {<a name="line.860"></a>
<span class="sourceLineNo">861</span> long roughBlockSize = maxSize / numBlocks;<a name="line.861"></a>
<span class="sourceLineNo">862</span> int numEntries = (int) Math.ceil((1.2) * maxSize / roughBlockSize);<a name="line.862"></a>
<span class="sourceLineNo">863</span> long totalOverhead = LruAdaptiveBlockCache.CACHE_FIXED_OVERHEAD + ClassSize.CONCURRENT_HASHMAP<a name="line.863"></a>
<span class="sourceLineNo">864</span> + (numEntries * ClassSize.CONCURRENT_HASHMAP_ENTRY)<a name="line.864"></a>
<span class="sourceLineNo">865</span> + (LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL * ClassSize.CONCURRENT_HASHMAP_SEGMENT);<a name="line.865"></a>
<span class="sourceLineNo">866</span> long negateBlockSize = (long) (totalOverhead / numEntries);<a name="line.866"></a>
<span class="sourceLineNo">867</span> negateBlockSize += LruCachedBlock.PER_BLOCK_OVERHEAD;<a name="line.867"></a>
<span class="sourceLineNo">868</span> return ClassSize.align((long) Math.floor((roughBlockSize - negateBlockSize) * 0.99f));<a name="line.868"></a>
<span class="sourceLineNo">869</span> }<a name="line.869"></a>
<span class="sourceLineNo">870</span><a name="line.870"></a>
<span class="sourceLineNo">871</span> private long calculateBlockSizeDefault(long maxSize, int numBlocks) {<a name="line.871"></a>
<span class="sourceLineNo">872</span> long roughBlockSize = maxSize / numBlocks;<a name="line.872"></a>
<span class="sourceLineNo">873</span> int numEntries = (int) Math.ceil((1.2) * maxSize / roughBlockSize);<a name="line.873"></a>
<span class="sourceLineNo">874</span> long totalOverhead = LruAdaptiveBlockCache.CACHE_FIXED_OVERHEAD + ClassSize.CONCURRENT_HASHMAP<a name="line.874"></a>
<span class="sourceLineNo">875</span> + (numEntries * ClassSize.CONCURRENT_HASHMAP_ENTRY)<a name="line.875"></a>
<span class="sourceLineNo">876</span> + (LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL * ClassSize.CONCURRENT_HASHMAP_SEGMENT);<a name="line.876"></a>
<span class="sourceLineNo">877</span> long negateBlockSize = totalOverhead / numEntries;<a name="line.877"></a>
<span class="sourceLineNo">878</span> negateBlockSize += LruCachedBlock.PER_BLOCK_OVERHEAD;<a name="line.878"></a>
<span class="sourceLineNo">879</span> return ClassSize.align((long) Math<a name="line.879"></a>
<span class="sourceLineNo">880</span> .floor((roughBlockSize - negateBlockSize) * LruAdaptiveBlockCache.DEFAULT_ACCEPTABLE_FACTOR));<a name="line.880"></a>
<span class="sourceLineNo">881</span> }<a name="line.881"></a>
<span class="sourceLineNo">882</span><a name="line.882"></a>
<span class="sourceLineNo">883</span> private static class CachedItem implements Cacheable {<a name="line.883"></a>
<span class="sourceLineNo">884</span> BlockCacheKey cacheKey;<a name="line.884"></a>
<span class="sourceLineNo">885</span> int size;<a name="line.885"></a>
<span class="sourceLineNo">886</span><a name="line.886"></a>
<span class="sourceLineNo">887</span> CachedItem(String blockName, int size, int offset) {<a name="line.887"></a>
<span class="sourceLineNo">888</span> this.cacheKey = new BlockCacheKey(blockName, offset);<a name="line.888"></a>
<span class="sourceLineNo">889</span> this.size = size;<a name="line.889"></a>
<span class="sourceLineNo">890</span> }<a name="line.890"></a>
<span class="sourceLineNo">891</span><a name="line.891"></a>
<span class="sourceLineNo">892</span> CachedItem(String blockName, int size) {<a name="line.892"></a>
<span class="sourceLineNo">893</span> this.cacheKey = new BlockCacheKey(blockName, 0);<a name="line.893"></a>
<span class="sourceLineNo">894</span> this.size = size;<a name="line.894"></a>
<span class="sourceLineNo">895</span> }<a name="line.895"></a>
<span class="sourceLineNo">896</span><a name="line.896"></a>
<span class="sourceLineNo">897</span> /** The size of this item reported to the block cache layer */<a name="line.897"></a>
<span class="sourceLineNo">898</span> @Override<a name="line.898"></a>
<span class="sourceLineNo">899</span> public long heapSize() {<a name="line.899"></a>
<span class="sourceLineNo">900</span> return ClassSize.align(size);<a name="line.900"></a>
<span class="sourceLineNo">901</span> }<a name="line.901"></a>
<span class="sourceLineNo">902</span><a name="line.902"></a>
<span class="sourceLineNo">903</span> /** Size of the cache block holding this item. Used for verification. */<a name="line.903"></a>
<span class="sourceLineNo">904</span> public long cacheBlockHeapSize() {<a name="line.904"></a>
<span class="sourceLineNo">905</span> return LruCachedBlock.PER_BLOCK_OVERHEAD + ClassSize.align(cacheKey.heapSize())<a name="line.905"></a>
<span class="sourceLineNo">906</span> + ClassSize.align(size);<a name="line.906"></a>
<span class="sourceLineNo">907</span> }<a name="line.907"></a>
<span class="sourceLineNo">908</span><a name="line.908"></a>
<span class="sourceLineNo">909</span> @Override<a name="line.909"></a>
<span class="sourceLineNo">910</span> public int getSerializedLength() {<a name="line.910"></a>
<span class="sourceLineNo">911</span> return 0;<a name="line.911"></a>
<span class="sourceLineNo">912</span> }<a name="line.912"></a>
<span class="sourceLineNo">913</span><a name="line.913"></a>
<span class="sourceLineNo">914</span> @Override<a name="line.914"></a>
<span class="sourceLineNo">915</span> public CacheableDeserializer&lt;Cacheable&gt; getDeserializer() {<a name="line.915"></a>
<span class="sourceLineNo">916</span> return null;<a name="line.916"></a>
<span class="sourceLineNo">917</span> }<a name="line.917"></a>
<span class="sourceLineNo">918</span><a name="line.918"></a>
<span class="sourceLineNo">919</span> @Override<a name="line.919"></a>
<span class="sourceLineNo">920</span> public void serialize(ByteBuffer destination, boolean includeNextBlockMetadata) {<a name="line.920"></a>
<span class="sourceLineNo">921</span> }<a name="line.921"></a>
<span class="sourceLineNo">922</span><a name="line.922"></a>
<span class="sourceLineNo">923</span> @Override<a name="line.923"></a>
<span class="sourceLineNo">924</span> public BlockType getBlockType() {<a name="line.924"></a>
<span class="sourceLineNo">925</span> return BlockType.DATA;<a name="line.925"></a>
<span class="sourceLineNo">926</span> }<a name="line.926"></a>
<span class="sourceLineNo">927</span> }<a name="line.927"></a>
<span class="sourceLineNo">928</span><a name="line.928"></a>
<span class="sourceLineNo">929</span> static void testMultiThreadGetAndEvictBlockInternal(BlockCache cache) throws Exception {<a name="line.929"></a>
<span class="sourceLineNo">930</span> int size = 100;<a name="line.930"></a>
<span class="sourceLineNo">931</span> int length = HConstants.HFILEBLOCK_HEADER_SIZE + size;<a name="line.931"></a>
<span class="sourceLineNo">932</span> byte[] byteArr = new byte[length];<a name="line.932"></a>
<span class="sourceLineNo">933</span> HFileContext meta = new HFileContextBuilder().build();<a name="line.933"></a>
<span class="sourceLineNo">934</span> BlockCacheKey key = new BlockCacheKey("key1", 0);<a name="line.934"></a>
<span class="sourceLineNo">935</span> HFileBlock blk = new HFileBlock(BlockType.DATA, size, size, -1,<a name="line.935"></a>
<span class="sourceLineNo">936</span> ByteBuff.wrap(ByteBuffer.wrap(byteArr, 0, size)), HFileBlock.FILL_HEADER, -1, 52, -1, meta,<a name="line.936"></a>
<span class="sourceLineNo">937</span> HEAP);<a name="line.937"></a>
<span class="sourceLineNo">938</span> AtomicBoolean err1 = new AtomicBoolean(false);<a name="line.938"></a>
<span class="sourceLineNo">939</span> Thread t1 = new Thread(() -&gt; {<a name="line.939"></a>
<span class="sourceLineNo">940</span> for (int i = 0; i &lt; 10000 &amp;&amp; !err1.get(); i++) {<a name="line.940"></a>
<span class="sourceLineNo">941</span> try {<a name="line.941"></a>
<span class="sourceLineNo">942</span> cache.getBlock(key, false, false, true);<a name="line.942"></a>
<span class="sourceLineNo">943</span> } catch (Exception e) {<a name="line.943"></a>
<span class="sourceLineNo">944</span> err1.set(true);<a name="line.944"></a>
<span class="sourceLineNo">945</span> LOG.info("Cache block or get block failure: ", e);<a name="line.945"></a>
<span class="sourceLineNo">946</span> }<a name="line.946"></a>
<span class="sourceLineNo">947</span> }<a name="line.947"></a>
<span class="sourceLineNo">948</span> });<a name="line.948"></a>
<span class="sourceLineNo">949</span><a name="line.949"></a>
<span class="sourceLineNo">950</span> AtomicBoolean err2 = new AtomicBoolean(false);<a name="line.950"></a>
<span class="sourceLineNo">951</span> Thread t2 = new Thread(() -&gt; {<a name="line.951"></a>
<span class="sourceLineNo">952</span> for (int i = 0; i &lt; 10000 &amp;&amp; !err2.get(); i++) {<a name="line.952"></a>
<span class="sourceLineNo">953</span> try {<a name="line.953"></a>
<span class="sourceLineNo">954</span> cache.evictBlock(key);<a name="line.954"></a>
<span class="sourceLineNo">955</span> } catch (Exception e) {<a name="line.955"></a>
<span class="sourceLineNo">956</span> err2.set(true);<a name="line.956"></a>
<span class="sourceLineNo">957</span> LOG.info("Evict block failure: ", e);<a name="line.957"></a>
<span class="sourceLineNo">958</span> }<a name="line.958"></a>
<span class="sourceLineNo">959</span> }<a name="line.959"></a>
<span class="sourceLineNo">960</span> });<a name="line.960"></a>
<span class="sourceLineNo">961</span><a name="line.961"></a>
<span class="sourceLineNo">962</span> AtomicBoolean err3 = new AtomicBoolean(false);<a name="line.962"></a>
<span class="sourceLineNo">963</span> Thread t3 = new Thread(() -&gt; {<a name="line.963"></a>
<span class="sourceLineNo">964</span> for (int i = 0; i &lt; 10000 &amp;&amp; !err3.get(); i++) {<a name="line.964"></a>
<span class="sourceLineNo">965</span> try {<a name="line.965"></a>
<span class="sourceLineNo">966</span> cache.cacheBlock(key, blk);<a name="line.966"></a>
<span class="sourceLineNo">967</span> } catch (Exception e) {<a name="line.967"></a>
<span class="sourceLineNo">968</span> err3.set(true);<a name="line.968"></a>
<span class="sourceLineNo">969</span> LOG.info("Cache block failure: ", e);<a name="line.969"></a>
<span class="sourceLineNo">970</span> }<a name="line.970"></a>
<span class="sourceLineNo">971</span> }<a name="line.971"></a>
<span class="sourceLineNo">972</span> });<a name="line.972"></a>
<span class="sourceLineNo">973</span> t1.start();<a name="line.973"></a>
<span class="sourceLineNo">974</span> t2.start();<a name="line.974"></a>
<span class="sourceLineNo">975</span> t3.start();<a name="line.975"></a>
<span class="sourceLineNo">976</span> t1.join();<a name="line.976"></a>
<span class="sourceLineNo">977</span> t2.join();<a name="line.977"></a>
<span class="sourceLineNo">978</span> t3.join();<a name="line.978"></a>
<span class="sourceLineNo">979</span> Assert.assertFalse(err1.get());<a name="line.979"></a>
<span class="sourceLineNo">980</span> Assert.assertFalse(err2.get());<a name="line.980"></a>
<span class="sourceLineNo">981</span> Assert.assertFalse(err3.get());<a name="line.981"></a>
<span class="sourceLineNo">982</span> }<a name="line.982"></a>
<span class="sourceLineNo">983</span><a name="line.983"></a>
<span class="sourceLineNo">984</span> @Test<a name="line.984"></a>
<span class="sourceLineNo">985</span> public void testMultiThreadGetAndEvictBlock() throws Exception {<a name="line.985"></a>
<span class="sourceLineNo">986</span> long maxSize = 100000;<a name="line.986"></a>
<span class="sourceLineNo">987</span> long blockSize = calculateBlockSize(maxSize, 10);<a name="line.987"></a>
<span class="sourceLineNo">988</span> LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, false,<a name="line.988"></a>
<span class="sourceLineNo">989</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.989"></a>
<span class="sourceLineNo">990</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.66f, // min<a name="line.990"></a>
<span class="sourceLineNo">991</span> 0.99f, // acceptable<a name="line.991"></a>
<span class="sourceLineNo">992</span> 0.33f, // single<a name="line.992"></a>
<span class="sourceLineNo">993</span> 0.33f, // multi<a name="line.993"></a>
<span class="sourceLineNo">994</span> 0.34f, // memory<a name="line.994"></a>
<span class="sourceLineNo">995</span> 1.2f, // limit<a name="line.995"></a>
<span class="sourceLineNo">996</span> false, 1024, 10, 500, 0.01f);<a name="line.996"></a>
<span class="sourceLineNo">997</span> testMultiThreadGetAndEvictBlockInternal(cache);<a name="line.997"></a>
<span class="sourceLineNo">998</span> }<a name="line.998"></a>
<span class="sourceLineNo">999</span><a name="line.999"></a>
<span class="sourceLineNo">1000</span> public void testSkipCacheDataBlocksInteral(int heavyEvictionCountLimit) throws Exception {<a name="line.1000"></a>
<span class="sourceLineNo">1001</span> long maxSize = 100000000;<a name="line.1001"></a>
<span class="sourceLineNo">1002</span> int numBlocks = 100000;<a name="line.1002"></a>
<span class="sourceLineNo">1003</span> final long blockSize = calculateBlockSizeDefault(maxSize, numBlocks);<a name="line.1003"></a>
<span class="sourceLineNo">1004</span> assertTrue("calculateBlockSize appears broken.", blockSize * numBlocks &lt;= maxSize);<a name="line.1004"></a>
<span class="sourceLineNo">1005</span><a name="line.1005"></a>
<span class="sourceLineNo">1006</span> final LruAdaptiveBlockCache cache = new LruAdaptiveBlockCache(maxSize, blockSize, true,<a name="line.1006"></a>
<span class="sourceLineNo">1007</span> (int) Math.ceil(1.2 * maxSize / blockSize), LruAdaptiveBlockCache.DEFAULT_LOAD_FACTOR,<a name="line.1007"></a>
<span class="sourceLineNo">1008</span> LruAdaptiveBlockCache.DEFAULT_CONCURRENCY_LEVEL, 0.5f, // min<a name="line.1008"></a>
<span class="sourceLineNo">1009</span> 0.99f, // acceptable<a name="line.1009"></a>
<span class="sourceLineNo">1010</span> 0.33f, // single<a name="line.1010"></a>
<span class="sourceLineNo">1011</span> 0.33f, // multi<a name="line.1011"></a>
<span class="sourceLineNo">1012</span> 0.34f, // memory<a name="line.1012"></a>
<span class="sourceLineNo">1013</span> 1.2f, // limit<a name="line.1013"></a>
<span class="sourceLineNo">1014</span> false, maxSize, heavyEvictionCountLimit, 200, 0.01f);<a name="line.1014"></a>
<span class="sourceLineNo">1015</span><a name="line.1015"></a>
<span class="sourceLineNo">1016</span> EvictionThread evictionThread = cache.getEvictionThread();<a name="line.1016"></a>
<span class="sourceLineNo">1017</span> assertNotNull(evictionThread);<a name="line.1017"></a>
<span class="sourceLineNo">1018</span> Waiter.waitFor(CONF, 10000, 10, () -&gt; evictionThread.isEnteringRun());<a name="line.1018"></a>
<span class="sourceLineNo">1019</span><a name="line.1019"></a>
<span class="sourceLineNo">1020</span> final String hfileName = "hfile";<a name="line.1020"></a>
<span class="sourceLineNo">1021</span> for (int blockIndex = 0; blockIndex &lt;= numBlocks * 3000; ++blockIndex) {<a name="line.1021"></a>
<span class="sourceLineNo">1022</span> CachedItem block = new CachedItem(hfileName, (int) blockSize, blockIndex);<a name="line.1022"></a>
<span class="sourceLineNo">1023</span> cache.cacheBlock(block.cacheKey, block, false);<a name="line.1023"></a>
<span class="sourceLineNo">1024</span> if (cache.getCacheDataBlockPercent() &lt; 70) {<a name="line.1024"></a>
<span class="sourceLineNo">1025</span> // enough for test<a name="line.1025"></a>
<span class="sourceLineNo">1026</span> break;<a name="line.1026"></a>
<span class="sourceLineNo">1027</span> }<a name="line.1027"></a>
<span class="sourceLineNo">1028</span> }<a name="line.1028"></a>
<span class="sourceLineNo">1029</span><a name="line.1029"></a>
<span class="sourceLineNo">1030</span> evictionThread.evict();<a name="line.1030"></a>
<span class="sourceLineNo">1031</span> Thread.sleep(100);<a name="line.1031"></a>
<span class="sourceLineNo">1032</span><a name="line.1032"></a>
<span class="sourceLineNo">1033</span> if (heavyEvictionCountLimit == 0) {<a name="line.1033"></a>
<span class="sourceLineNo">1034</span> // Check if all offset (last two digits) of cached blocks less than the percent.<a name="line.1034"></a>
<span class="sourceLineNo">1035</span> // It means some of blocks haven't put into BlockCache<a name="line.1035"></a>
<span class="sourceLineNo">1036</span> assertTrue(cache.getCacheDataBlockPercent() &lt; 90);<a name="line.1036"></a>
<span class="sourceLineNo">1037</span> for (BlockCacheKey key : cache.getMapForTests().keySet()) {<a name="line.1037"></a>
<span class="sourceLineNo">1038</span> assertTrue(!(key.getOffset() % 100 &gt; 90));<a name="line.1038"></a>
<span class="sourceLineNo">1039</span> }<a name="line.1039"></a>
<span class="sourceLineNo">1040</span> } else {<a name="line.1040"></a>
<span class="sourceLineNo">1041</span> // Check that auto-scaling is not working (all blocks in BlockCache)<a name="line.1041"></a>
<span class="sourceLineNo">1042</span> assertTrue(cache.getCacheDataBlockPercent() == 100);<a name="line.1042"></a>
<span class="sourceLineNo">1043</span> int counter = 0;<a name="line.1043"></a>
<span class="sourceLineNo">1044</span> for (BlockCacheKey key : cache.getMapForTests().keySet()) {<a name="line.1044"></a>
<span class="sourceLineNo">1045</span> if (key.getOffset() % 100 &gt; 90) {<a name="line.1045"></a>
<span class="sourceLineNo">1046</span> counter++;<a name="line.1046"></a>
<span class="sourceLineNo">1047</span> }<a name="line.1047"></a>
<span class="sourceLineNo">1048</span> }<a name="line.1048"></a>
<span class="sourceLineNo">1049</span> assertTrue(counter &gt; 1000);<a name="line.1049"></a>
<span class="sourceLineNo">1050</span> }<a name="line.1050"></a>
<span class="sourceLineNo">1051</span> evictionThread.shutdown();<a name="line.1051"></a>
<span class="sourceLineNo">1052</span> }<a name="line.1052"></a>
<span class="sourceLineNo">1053</span><a name="line.1053"></a>
<span class="sourceLineNo">1054</span> @Test<a name="line.1054"></a>
<span class="sourceLineNo">1055</span> public void testSkipCacheDataBlocks() throws Exception {<a name="line.1055"></a>
<span class="sourceLineNo">1056</span> // Check that auto-scaling will work right after start<a name="line.1056"></a>
<span class="sourceLineNo">1057</span> testSkipCacheDataBlocksInteral(0);<a name="line.1057"></a>
<span class="sourceLineNo">1058</span> // Check that auto-scaling will not work right after start<a name="line.1058"></a>
<span class="sourceLineNo">1059</span> // (have to finished before auto-scaling)<a name="line.1059"></a>
<span class="sourceLineNo">1060</span> testSkipCacheDataBlocksInteral(100);<a name="line.1060"></a>
<span class="sourceLineNo">1061</span> }<a name="line.1061"></a>
<span class="sourceLineNo">1062</span>}<a name="line.1062"></a>
</pre>
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