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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 io.opentelemetry.api.trace.Span;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import io.opentelemetry.context.Scope;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.net.InetSocketAddress;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.ByteBuffer;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Iterator;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.NoSuchElementException;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.ExecutionException;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.Executors;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.ScheduledExecutorService;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.TimeUnit;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import net.spy.memcached.CachedData;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import net.spy.memcached.ConnectionFactoryBuilder;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import net.spy.memcached.FailureMode;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import net.spy.memcached.MemcachedClient;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import net.spy.memcached.OperationTimeoutException;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import net.spy.memcached.transcoders.Transcoder;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.conf.Configuration;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.io.ByteBuffAllocator;<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.nio.SingleByteBuff;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.Addressing;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.util.StringUtils;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.slf4j.Logger;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.slf4j.LoggerFactory;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<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> * Class to store blocks into memcached. This should only be used on a cluster of Memcached daemons<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * that are tuned well and have a good network connection to the HBase regionservers. Any other use<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * will likely slow down HBase greatly.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>@SuppressWarnings("FutureReturnValueIgnored")<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>public class MemcachedBlockCache implements BlockCache {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private static final Logger LOG = LoggerFactory.getLogger(MemcachedBlockCache.class.getName());<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> // Some memcache versions won't take more than 1024 * 1024. So set the limit below<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> // that just in case this client is used with those versions.<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> public static final int MAX_SIZE = 1020 * 1024;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> // Start memcached with -I <MAX_SIZE> to ensure it has the ability to store blocks of this size<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> public static final int MAX_TIME = 60 * 60 * 24 * 30; // 30 days, max allowed per the memcached<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // spec<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> // Config key for what memcached servers to use.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> // They should be specified in a comma sperated list with ports.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> // like:<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> //<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> // host1:11211,host3:8080,host4:11211<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> public static final String MEMCACHED_CONFIG_KEY = "hbase.cache.memcached.servers";<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> public static final String MEMCACHED_TIMEOUT_KEY = "hbase.cache.memcached.timeout";<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public static final String MEMCACHED_OPTIMEOUT_KEY = "hbase.cache.memcached.optimeout";<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public static final String MEMCACHED_OPTIMIZE_KEY = "hbase.cache.memcached.spy.optimze";<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> public static final long MEMCACHED_DEFAULT_TIMEOUT = 500;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public static final boolean MEMCACHED_OPTIMIZE_DEFAULT = false;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> public static final int STAT_THREAD_PERIOD = 60 * 5;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private final MemcachedClient client;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final HFileBlockTranscoder tc = new HFileBlockTranscoder();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> private final CacheStats cacheStats = new CacheStats("MemcachedBlockCache");<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private final AtomicLong cachedCount = new AtomicLong();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> private final AtomicLong notCachedCount = new AtomicLong();<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> private final AtomicLong cacheErrorCount = new AtomicLong();<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private final AtomicLong timeoutCount = new AtomicLong();<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> /** Statistics thread schedule pool (for heavy debugging, could remove) */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private transient final ScheduledExecutorService scheduleThreadPool =<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> Executors.newScheduledThreadPool(1, new ThreadFactoryBuilder()<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> .setNameFormat("MemcachedBlockCacheStatsExecutor").setDaemon(true).build());<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> public MemcachedBlockCache(Configuration c) throws IOException {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> LOG.info("Creating MemcachedBlockCache");<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> long opTimeout = c.getLong(MEMCACHED_OPTIMEOUT_KEY, MEMCACHED_DEFAULT_TIMEOUT);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> long queueTimeout = c.getLong(MEMCACHED_TIMEOUT_KEY, opTimeout + MEMCACHED_DEFAULT_TIMEOUT);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> boolean optimize = c.getBoolean(MEMCACHED_OPTIMIZE_KEY, MEMCACHED_OPTIMIZE_DEFAULT);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> ConnectionFactoryBuilder builder =<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> new ConnectionFactoryBuilder().setOpTimeout(opTimeout).setOpQueueMaxBlockTime(queueTimeout)<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> .setFailureMode(FailureMode.Redistribute).setShouldOptimize(optimize).setDaemon(true)<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> .setUseNagleAlgorithm(false).setReadBufferSize(MAX_SIZE);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> // Assume only the localhost is serving memcached.<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // A la mcrouter or co-locating memcached with split regionservers.<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> //<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> // If this config is a pool of memcached servers they will all be used according to the<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> // default hashing scheme defined by the memcached client. Spy Memecache client in this<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> // case.<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> String serverListString = c.get(MEMCACHED_CONFIG_KEY, "localhost:11211");<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> String[] servers = serverListString.split(",");<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> // MemcachedClient requires InetSocketAddresses, we have to create them now. Implies any<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> // resolved identities cannot have their address mappings changed while the MemcachedClient<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> // instance is alive. We won't get a chance to trigger re-resolution.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> List<InetSocketAddress> serverAddresses = new ArrayList<>(servers.length);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> for (String s : servers) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> serverAddresses.add(Addressing.createInetSocketAddressFromHostAndPortStr(s));<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> client = new MemcachedClient(builder.build(), serverAddresses);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> this.scheduleThreadPool.scheduleAtFixedRate(new StatisticsThread(this), STAT_THREAD_PERIOD,<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> STAT_THREAD_PERIOD, TimeUnit.SECONDS);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span><a name="line.129"></a> |
| <span class="sourceLineNo">130</span> @Override<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> public void cacheBlock(BlockCacheKey cacheKey, Cacheable buf, boolean inMemory) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> cacheBlock(cacheKey, buf);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> @Override<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public void cacheBlock(BlockCacheKey cacheKey, Cacheable buf) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> if (buf instanceof HFileBlock) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> if (buf.getSerializedLength() > MAX_SIZE) {<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> LOG.debug("Block of type {} with key {} is too large, size={}, max={}, will not cache",<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> buf.getClass(), cacheKey, buf.getSerializedLength(), MAX_SIZE);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> notCachedCount.incrementAndGet();<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> return;<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> client.set(cacheKey.toString(), MAX_TIME, (HFileBlock) buf, tc).addListener(f -> {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> try {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> f.get();<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> cachedCount.incrementAndGet();<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> } catch (Exception e) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> LOG.warn("Failed to cache block with key " + cacheKey, e);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> cacheErrorCount.incrementAndGet();<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> } else {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> LOG.debug("Can not cache Cacheables of type {} with key {}", buf.getClass(), cacheKey);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> notCachedCount.incrementAndGet();<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> }<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span><a name="line.158"></a> |
| <span class="sourceLineNo">159</span> @Override<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> public Cacheable getBlock(BlockCacheKey cacheKey, boolean caching, boolean repeat,<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> boolean updateCacheMetrics) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> // Assume that nothing is the block cache<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> HFileBlock result = null;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> Span span = TraceUtil.getGlobalTracer().spanBuilder("MemcachedBlockCache.getBlock").startSpan();<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> try (Scope traceScope = span.makeCurrent()) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> result = client.get(cacheKey.toString(), tc);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> } catch (Exception e) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // Catch a pretty broad set of exceptions to limit any changes in the memcache client<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // and how it handles failures from leaking into the read path.<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> if (<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> (e instanceof OperationTimeoutException) || ((e instanceof RuntimeException)<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> && (e.getCause() instanceof OperationTimeoutException))<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> ) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> timeoutCount.incrementAndGet();<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> if (LOG.isDebugEnabled()) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> LOG.debug("Timeout getting key " + cacheKey.toString(), e);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> } else {<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> cacheErrorCount.incrementAndGet();<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> if (LOG.isDebugEnabled()) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> LOG.debug("Exception getting key " + cacheKey.toString(), e);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> result = null;<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> } finally {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> span.end();<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> if (updateCacheMetrics) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> if (result == null) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> cacheStats.miss(caching, cacheKey.isPrimary(), cacheKey.getBlockType());<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> } else {<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> cacheStats.hit(caching, cacheKey.isPrimary(), cacheKey.getBlockType());<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> }<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> return result;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> }<a name="line.196"></a> |
| <span class="sourceLineNo">197</span><a name="line.197"></a> |
| <span class="sourceLineNo">198</span> @Override<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> public boolean evictBlock(BlockCacheKey cacheKey) {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> try {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> cacheStats.evict();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> return client.delete(cacheKey.toString()).get();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> } catch (InterruptedException e) {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> LOG.warn("Error deleting " + cacheKey.toString(), e);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> Thread.currentThread().interrupt();<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> } catch (ExecutionException e) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> if (LOG.isDebugEnabled()) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> LOG.debug("Error deleting " + cacheKey.toString(), e);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> return false;<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span><a name="line.213"></a> |
| <span class="sourceLineNo">214</span> /**<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> * This method does nothing so that memcached can handle all evictions.<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> */<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> @Override<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> public int evictBlocksByHfileName(String hfileName) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> return 0;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span><a name="line.221"></a> |
| <span class="sourceLineNo">222</span> @Override<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> public CacheStats getStats() {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> return cacheStats;<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> @Override<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> public void shutdown() {<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> client.shutdown();<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> this.scheduleThreadPool.shutdown();<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> for (int i = 0; i < 10; i++) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (!this.scheduleThreadPool.isShutdown()) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> try {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> Thread.sleep(10);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> } catch (InterruptedException e) {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> LOG.warn("Interrupted while sleeping");<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> Thread.currentThread().interrupt();<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> break;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (!this.scheduleThreadPool.isShutdown()) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> List<Runnable> runnables = this.scheduleThreadPool.shutdownNow();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> LOG.debug("Still running " + runnables);<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 name="line.247"></a> |
| <span class="sourceLineNo">248</span> @Override<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> public long size() {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> return 0;<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span><a name="line.252"></a> |
| <span class="sourceLineNo">253</span> @Override<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> public long getMaxSize() {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> return 0;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> @Override<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> public long getFreeSize() {<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return 0;<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> @Override<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> public long getCurrentSize() {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> return 0;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> @Override<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> public long getCurrentDataSize() {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> return 0;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> @Override<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> public long getBlockCount() {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> return 0;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> @Override<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> public long getDataBlockCount() {<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> return 0;<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> }<a name="line.281"></a> |
| <span class="sourceLineNo">282</span><a name="line.282"></a> |
| <span class="sourceLineNo">283</span> @Override<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> public Iterator<CachedBlock> iterator() {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> return new Iterator<CachedBlock>() {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> @Override<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> public boolean hasNext() {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> return false;<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> @Override<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public CachedBlock next() {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> throw new NoSuchElementException("MemcachedBlockCache can't iterate over blocks.");<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> @Override<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> public void remove() {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span><a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> };<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> }<a name="line.301"></a> |
| <span class="sourceLineNo">302</span><a name="line.302"></a> |
| <span class="sourceLineNo">303</span> @Override<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> public BlockCache[] getBlockCaches() {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> return null;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> /**<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * Class to encode and decode an HFileBlock to and from memecached's resulting byte arrays.<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> */<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> private static class HFileBlockTranscoder implements Transcoder<HFileBlock> {<a name="line.311"></a> |
| <span class="sourceLineNo">312</span><a name="line.312"></a> |
| <span class="sourceLineNo">313</span> @Override<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> public boolean asyncDecode(CachedData d) {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> return false;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> @Override<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> public CachedData encode(HFileBlock block) {<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> ByteBuffer bb = ByteBuffer.allocate(block.getSerializedLength());<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> block.serialize(bb, true);<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> return new CachedData(0, bb.array(), CachedData.MAX_SIZE);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> @Override<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> public HFileBlock decode(CachedData d) {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> try {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> ByteBuff buf = new SingleByteBuff(ByteBuffer.wrap(d.getData()));<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> return (HFileBlock) HFileBlock.BLOCK_DESERIALIZER.deserialize(buf, ByteBuffAllocator.HEAP);<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> } catch (IOException e) {<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> LOG.warn("Failed to deserialize data from memcached", e);<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> }<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> return null;<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> }<a name="line.334"></a> |
| <span class="sourceLineNo">335</span><a name="line.335"></a> |
| <span class="sourceLineNo">336</span> @Override<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> public int getMaxSize() {<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> return MAX_SIZE;<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> }<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> }<a name="line.340"></a> |
| <span class="sourceLineNo">341</span><a name="line.341"></a> |
| <span class="sourceLineNo">342</span> private static class StatisticsThread extends Thread {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span><a name="line.343"></a> |
| <span class="sourceLineNo">344</span> private final MemcachedBlockCache c;<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> public StatisticsThread(MemcachedBlockCache c) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> super("MemcachedBlockCacheStats");<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> setDaemon(true);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> this.c = c;<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> }<a name="line.350"></a> |
| <span class="sourceLineNo">351</span><a name="line.351"></a> |
| <span class="sourceLineNo">352</span> @Override<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> public void run() {<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> c.logStats();<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> }<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> public void logStats() {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> LOG.info("cached=" + cachedCount.get() + ", notCached=" + notCachedCount.get()<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> + ", cacheErrors=" + cacheErrorCount.get() + ", timeouts=" + timeoutCount.get() + ", reads="<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> + cacheStats.getRequestCount() + ", " + "hits=" + cacheStats.getHitCount() + ", hitRatio="<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> + (cacheStats.getHitCount() == 0<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> ? "0"<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> : (StringUtils.formatPercent(cacheStats.getHitRatio(), 2) + ", "))<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> + "cachingAccesses=" + cacheStats.getRequestCachingCount() + ", " + "cachingHits="<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> + cacheStats.getHitCachingCount() + ", " + "cachingHitsRatio="<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> + (cacheStats.getHitCachingCount() == 0<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> ? "0,"<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> : (StringUtils.formatPercent(cacheStats.getHitCachingRatio(), 2) + ", "))<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> + "evictions=" + cacheStats.getEvictionCount() + ", " + "evicted="<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> + cacheStats.getEvictedCount() + ", " + "evictedPerRun=" + cacheStats.evictedPerEviction());<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> }<a name="line.373"></a> |
| <span class="sourceLineNo">374</span><a name="line.374"></a> |
| <span class="sourceLineNo">375</span>}<a name="line.375"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
