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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.master.cleaner;<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.HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS;<a name="line.20"></a>
<span class="sourceLineNo">021</span><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.util.ArrayList;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.concurrent.CountDownLatch;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.concurrent.TimeUnit;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.conf.Configuration;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.fs.FileStatus;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FileSystem;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.Path;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.Stoppable;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.conf.ConfigurationObserver;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.slf4j.Logger;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.slf4j.LoggerFactory;<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span>/**<a name="line.44"></a>
<span class="sourceLineNo">045</span> * This Chore, every time it runs, will attempt to delete the WALs and Procedure WALs in the old<a name="line.45"></a>
<span class="sourceLineNo">046</span> * logs folder. The WAL is only deleted if none of the cleaner delegates says otherwise.<a name="line.46"></a>
<span class="sourceLineNo">047</span> * @see BaseLogCleanerDelegate<a name="line.47"></a>
<span class="sourceLineNo">048</span> */<a name="line.48"></a>
<span class="sourceLineNo">049</span>@InterfaceAudience.Private<a name="line.49"></a>
<span class="sourceLineNo">050</span>public class LogCleaner extends CleanerChore&lt;BaseLogCleanerDelegate&gt;<a name="line.50"></a>
<span class="sourceLineNo">051</span> implements ConfigurationObserver {<a name="line.51"></a>
<span class="sourceLineNo">052</span> private static final Logger LOG = LoggerFactory.getLogger(LogCleaner.class);<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> public static final String OLD_WALS_CLEANER_THREAD_SIZE = "hbase.oldwals.cleaner.thread.size";<a name="line.54"></a>
<span class="sourceLineNo">055</span> public static final int DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE = 2;<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span> public static final String OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC =<a name="line.57"></a>
<span class="sourceLineNo">058</span> "hbase.oldwals.cleaner.thread.timeout.msec";<a name="line.58"></a>
<span class="sourceLineNo">059</span> @VisibleForTesting<a name="line.59"></a>
<span class="sourceLineNo">060</span> static final long DEFAULT_OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC = 60 * 1000L;<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> private final LinkedBlockingQueue&lt;CleanerContext&gt; pendingDelete;<a name="line.62"></a>
<span class="sourceLineNo">063</span> private List&lt;Thread&gt; oldWALsCleaner;<a name="line.63"></a>
<span class="sourceLineNo">064</span> private long cleanerThreadTimeoutMsec;<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span> /**<a name="line.66"></a>
<span class="sourceLineNo">067</span> * @param period the period of time to sleep between each run<a name="line.67"></a>
<span class="sourceLineNo">068</span> * @param stopper the stopper<a name="line.68"></a>
<span class="sourceLineNo">069</span> * @param conf configuration to use<a name="line.69"></a>
<span class="sourceLineNo">070</span> * @param fs handle to the FS<a name="line.70"></a>
<span class="sourceLineNo">071</span> * @param oldLogDir the path to the archived logs<a name="line.71"></a>
<span class="sourceLineNo">072</span> * @param pool the thread pool used to scan directories<a name="line.72"></a>
<span class="sourceLineNo">073</span> */<a name="line.73"></a>
<span class="sourceLineNo">074</span> public LogCleaner(final int period, final Stoppable stopper, Configuration conf, FileSystem fs,<a name="line.74"></a>
<span class="sourceLineNo">075</span> Path oldLogDir, DirScanPool pool) {<a name="line.75"></a>
<span class="sourceLineNo">076</span> super("LogsCleaner", period, stopper, conf, fs, oldLogDir, HBASE_MASTER_LOGCLEANER_PLUGINS,<a name="line.76"></a>
<span class="sourceLineNo">077</span> pool);<a name="line.77"></a>
<span class="sourceLineNo">078</span> this.pendingDelete = new LinkedBlockingQueue&lt;&gt;();<a name="line.78"></a>
<span class="sourceLineNo">079</span> int size = conf.getInt(OLD_WALS_CLEANER_THREAD_SIZE, DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE);<a name="line.79"></a>
<span class="sourceLineNo">080</span> this.oldWALsCleaner = createOldWalsCleaner(size);<a name="line.80"></a>
<span class="sourceLineNo">081</span> this.cleanerThreadTimeoutMsec = conf.getLong(OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC,<a name="line.81"></a>
<span class="sourceLineNo">082</span> DEFAULT_OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC);<a name="line.82"></a>
<span class="sourceLineNo">083</span> }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> @Override<a name="line.85"></a>
<span class="sourceLineNo">086</span> protected boolean validate(Path file) {<a name="line.86"></a>
<span class="sourceLineNo">087</span> return AbstractFSWALProvider.validateWALFilename(file.getName())<a name="line.87"></a>
<span class="sourceLineNo">088</span> || MasterProcedureUtil.validateProcedureWALFilename(file.getName());<a name="line.88"></a>
<span class="sourceLineNo">089</span> }<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span> @Override<a name="line.91"></a>
<span class="sourceLineNo">092</span> public void onConfigurationChange(Configuration conf) {<a name="line.92"></a>
<span class="sourceLineNo">093</span> int newSize = conf.getInt(OLD_WALS_CLEANER_THREAD_SIZE, DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE);<a name="line.93"></a>
<span class="sourceLineNo">094</span> if (newSize == oldWALsCleaner.size()) {<a name="line.94"></a>
<span class="sourceLineNo">095</span> LOG.debug("Size from configuration is the same as previous which "<a name="line.95"></a>
<span class="sourceLineNo">096</span> + "is {}, no need to update.", newSize);<a name="line.96"></a>
<span class="sourceLineNo">097</span> return;<a name="line.97"></a>
<span class="sourceLineNo">098</span> }<a name="line.98"></a>
<span class="sourceLineNo">099</span> interruptOldWALsCleaner();<a name="line.99"></a>
<span class="sourceLineNo">100</span> oldWALsCleaner = createOldWalsCleaner(newSize);<a name="line.100"></a>
<span class="sourceLineNo">101</span> cleanerThreadTimeoutMsec = conf.getLong(OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC,<a name="line.101"></a>
<span class="sourceLineNo">102</span> DEFAULT_OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC);<a name="line.102"></a>
<span class="sourceLineNo">103</span> }<a name="line.103"></a>
<span class="sourceLineNo">104</span><a name="line.104"></a>
<span class="sourceLineNo">105</span> @Override<a name="line.105"></a>
<span class="sourceLineNo">106</span> protected int deleteFiles(Iterable&lt;FileStatus&gt; filesToDelete) {<a name="line.106"></a>
<span class="sourceLineNo">107</span> List&lt;CleanerContext&gt; results = new ArrayList&lt;&gt;();<a name="line.107"></a>
<span class="sourceLineNo">108</span> for (FileStatus file : filesToDelete) {<a name="line.108"></a>
<span class="sourceLineNo">109</span> LOG.trace("Scheduling file {} for deletion", file);<a name="line.109"></a>
<span class="sourceLineNo">110</span> if (file != null) {<a name="line.110"></a>
<span class="sourceLineNo">111</span> results.add(new CleanerContext(file));<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><a name="line.114"></a>
<span class="sourceLineNo">115</span> LOG.debug("Old WAL files pending deletion: {}", results);<a name="line.115"></a>
<span class="sourceLineNo">116</span> pendingDelete.addAll(results);<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span> int deletedFiles = 0;<a name="line.118"></a>
<span class="sourceLineNo">119</span> for (CleanerContext res : results) {<a name="line.119"></a>
<span class="sourceLineNo">120</span> LOG.trace("Awaiting the results for deletion of old WAL file: {}", res);<a name="line.120"></a>
<span class="sourceLineNo">121</span> deletedFiles += res.getResult(this.cleanerThreadTimeoutMsec) ? 1 : 0;<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span> return deletedFiles;<a name="line.123"></a>
<span class="sourceLineNo">124</span> }<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> @Override<a name="line.126"></a>
<span class="sourceLineNo">127</span> public synchronized void cleanup() {<a name="line.127"></a>
<span class="sourceLineNo">128</span> super.cleanup();<a name="line.128"></a>
<span class="sourceLineNo">129</span> interruptOldWALsCleaner();<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> @VisibleForTesting<a name="line.132"></a>
<span class="sourceLineNo">133</span> int getSizeOfCleaners() {<a name="line.133"></a>
<span class="sourceLineNo">134</span> return oldWALsCleaner.size();<a name="line.134"></a>
<span class="sourceLineNo">135</span> }<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span> @VisibleForTesting<a name="line.137"></a>
<span class="sourceLineNo">138</span> long getCleanerThreadTimeoutMsec() {<a name="line.138"></a>
<span class="sourceLineNo">139</span> return cleanerThreadTimeoutMsec;<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span> private List&lt;Thread&gt; createOldWalsCleaner(int size) {<a name="line.142"></a>
<span class="sourceLineNo">143</span> LOG.info("Creating {} OldWALs cleaner threads", size);<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span> List&lt;Thread&gt; oldWALsCleaner = new ArrayList&lt;&gt;(size);<a name="line.145"></a>
<span class="sourceLineNo">146</span> for (int i = 0; i &lt; size; i++) {<a name="line.146"></a>
<span class="sourceLineNo">147</span> Thread cleaner = new Thread(() -&gt; deleteFile());<a name="line.147"></a>
<span class="sourceLineNo">148</span> cleaner.setName("OldWALsCleaner-" + i);<a name="line.148"></a>
<span class="sourceLineNo">149</span> cleaner.setDaemon(true);<a name="line.149"></a>
<span class="sourceLineNo">150</span> cleaner.start();<a name="line.150"></a>
<span class="sourceLineNo">151</span> oldWALsCleaner.add(cleaner);<a name="line.151"></a>
<span class="sourceLineNo">152</span> }<a name="line.152"></a>
<span class="sourceLineNo">153</span> return oldWALsCleaner;<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span><a name="line.155"></a>
<span class="sourceLineNo">156</span> private void interruptOldWALsCleaner() {<a name="line.156"></a>
<span class="sourceLineNo">157</span> for (Thread cleaner : oldWALsCleaner) {<a name="line.157"></a>
<span class="sourceLineNo">158</span> LOG.trace("Interrupting thread: {}", cleaner);<a name="line.158"></a>
<span class="sourceLineNo">159</span> cleaner.interrupt();<a name="line.159"></a>
<span class="sourceLineNo">160</span> }<a name="line.160"></a>
<span class="sourceLineNo">161</span> oldWALsCleaner.clear();<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span> private void deleteFile() {<a name="line.164"></a>
<span class="sourceLineNo">165</span> while (true) {<a name="line.165"></a>
<span class="sourceLineNo">166</span> try {<a name="line.166"></a>
<span class="sourceLineNo">167</span> final CleanerContext context = pendingDelete.take();<a name="line.167"></a>
<span class="sourceLineNo">168</span> Preconditions.checkNotNull(context);<a name="line.168"></a>
<span class="sourceLineNo">169</span> FileStatus oldWalFile = context.getTargetToClean();<a name="line.169"></a>
<span class="sourceLineNo">170</span> try {<a name="line.170"></a>
<span class="sourceLineNo">171</span> LOG.debug("Attempting to delete old WAL file: {}", oldWalFile);<a name="line.171"></a>
<span class="sourceLineNo">172</span> boolean succeed = this.fs.delete(oldWalFile.getPath(), false);<a name="line.172"></a>
<span class="sourceLineNo">173</span> context.setResult(succeed);<a name="line.173"></a>
<span class="sourceLineNo">174</span> } catch (IOException e) {<a name="line.174"></a>
<span class="sourceLineNo">175</span> // fs.delete() fails.<a name="line.175"></a>
<span class="sourceLineNo">176</span> LOG.warn("Failed to clean old WAL file", e);<a name="line.176"></a>
<span class="sourceLineNo">177</span> context.setResult(false);<a name="line.177"></a>
<span class="sourceLineNo">178</span> }<a name="line.178"></a>
<span class="sourceLineNo">179</span> } catch (InterruptedException ite) {<a name="line.179"></a>
<span class="sourceLineNo">180</span> // It is most likely from configuration changing request<a name="line.180"></a>
<span class="sourceLineNo">181</span> LOG.warn("Interrupted while cleaning old WALs, will "<a name="line.181"></a>
<span class="sourceLineNo">182</span> + "try to clean it next round. Exiting.");<a name="line.182"></a>
<span class="sourceLineNo">183</span> // Restore interrupt status<a name="line.183"></a>
<span class="sourceLineNo">184</span> Thread.currentThread().interrupt();<a name="line.184"></a>
<span class="sourceLineNo">185</span> return;<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span> LOG.debug("Exiting");<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span> }<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span> @Override<a name="line.191"></a>
<span class="sourceLineNo">192</span> public synchronized void cancel(boolean mayInterruptIfRunning) {<a name="line.192"></a>
<span class="sourceLineNo">193</span> LOG.debug("Cancelling LogCleaner");<a name="line.193"></a>
<span class="sourceLineNo">194</span> super.cancel(mayInterruptIfRunning);<a name="line.194"></a>
<span class="sourceLineNo">195</span> interruptOldWALsCleaner();<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> private static final class CleanerContext {<a name="line.198"></a>
<span class="sourceLineNo">199</span><a name="line.199"></a>
<span class="sourceLineNo">200</span> final FileStatus target;<a name="line.200"></a>
<span class="sourceLineNo">201</span> final AtomicBoolean result;<a name="line.201"></a>
<span class="sourceLineNo">202</span> final CountDownLatch remainingResults;<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span> private CleanerContext(FileStatus status) {<a name="line.204"></a>
<span class="sourceLineNo">205</span> this.target = status;<a name="line.205"></a>
<span class="sourceLineNo">206</span> this.result = new AtomicBoolean(false);<a name="line.206"></a>
<span class="sourceLineNo">207</span> this.remainingResults = new CountDownLatch(1);<a name="line.207"></a>
<span class="sourceLineNo">208</span> }<a name="line.208"></a>
<span class="sourceLineNo">209</span><a name="line.209"></a>
<span class="sourceLineNo">210</span> void setResult(boolean res) {<a name="line.210"></a>
<span class="sourceLineNo">211</span> this.result.set(res);<a name="line.211"></a>
<span class="sourceLineNo">212</span> this.remainingResults.countDown();<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> boolean getResult(long waitIfNotFinished) {<a name="line.215"></a>
<span class="sourceLineNo">216</span> try {<a name="line.216"></a>
<span class="sourceLineNo">217</span> boolean completed = this.remainingResults.await(waitIfNotFinished,<a name="line.217"></a>
<span class="sourceLineNo">218</span> TimeUnit.MILLISECONDS);<a name="line.218"></a>
<span class="sourceLineNo">219</span> if (!completed) {<a name="line.219"></a>
<span class="sourceLineNo">220</span> LOG.warn("Spend too much time [{}ms] to delete old WAL file: {}",<a name="line.220"></a>
<span class="sourceLineNo">221</span> waitIfNotFinished, target);<a name="line.221"></a>
<span class="sourceLineNo">222</span> return false;<a name="line.222"></a>
<span class="sourceLineNo">223</span> }<a name="line.223"></a>
<span class="sourceLineNo">224</span> } catch (InterruptedException e) {<a name="line.224"></a>
<span class="sourceLineNo">225</span> LOG.warn("Interrupted while awaiting deletion of WAL file: {}", target);<a name="line.225"></a>
<span class="sourceLineNo">226</span> return false;<a name="line.226"></a>
<span class="sourceLineNo">227</span> }<a name="line.227"></a>
<span class="sourceLineNo">228</span> return result.get();<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
<span class="sourceLineNo">230</span><a name="line.230"></a>
<span class="sourceLineNo">231</span> FileStatus getTargetToClean() {<a name="line.231"></a>
<span class="sourceLineNo">232</span> return target;<a name="line.232"></a>
<span class="sourceLineNo">233</span> }<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span> @Override<a name="line.235"></a>
<span class="sourceLineNo">236</span> public String toString() {<a name="line.236"></a>
<span class="sourceLineNo">237</span> return "CleanerContext [target=" + target + ", result=" + result + "]";<a name="line.237"></a>
<span class="sourceLineNo">238</span> }<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>
</pre>
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