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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><a name="line.18"></a>
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.util;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.FileNotFoundException;<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.io.InterruptedIOException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.lang.reflect.Method;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.net.InetSocketAddress;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.net.URI;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Collection;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.HashSet;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Set;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.conf.Configuration;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileSystem;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.FilterFileSystem;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.Path;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException;<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.apache.yetus.audience.InterfaceStability;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hbase.thirdparty.com.google.common.collect.Sets;<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> * Implementation for hdfs<a name="line.45"></a>
<span class="sourceLineNo">046</span> */<a name="line.46"></a>
<span class="sourceLineNo">047</span>@InterfaceAudience.Private<a name="line.47"></a>
<span class="sourceLineNo">048</span>@InterfaceStability.Evolving<a name="line.48"></a>
<span class="sourceLineNo">049</span>public class FSHDFSUtils extends FSUtils {<a name="line.49"></a>
<span class="sourceLineNo">050</span> private static final Logger LOG = LoggerFactory.getLogger(FSHDFSUtils.class);<a name="line.50"></a>
<span class="sourceLineNo">051</span> private static Class dfsUtilClazz;<a name="line.51"></a>
<span class="sourceLineNo">052</span> private static Method getNNAddressesMethod;<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> /**<a name="line.54"></a>
<span class="sourceLineNo">055</span> * @param fs<a name="line.55"></a>
<span class="sourceLineNo">056</span> * @param conf<a name="line.56"></a>
<span class="sourceLineNo">057</span> * @return A set containing all namenode addresses of fs<a name="line.57"></a>
<span class="sourceLineNo">058</span> */<a name="line.58"></a>
<span class="sourceLineNo">059</span> private static Set&lt;InetSocketAddress&gt; getNNAddresses(DistributedFileSystem fs,<a name="line.59"></a>
<span class="sourceLineNo">060</span> Configuration conf) {<a name="line.60"></a>
<span class="sourceLineNo">061</span> Set&lt;InetSocketAddress&gt; addresses = new HashSet&lt;&gt;();<a name="line.61"></a>
<span class="sourceLineNo">062</span> String serviceName = fs.getCanonicalServiceName();<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span> if (serviceName.startsWith("ha-hdfs")) {<a name="line.64"></a>
<span class="sourceLineNo">065</span> try {<a name="line.65"></a>
<span class="sourceLineNo">066</span> if (dfsUtilClazz == null) {<a name="line.66"></a>
<span class="sourceLineNo">067</span> dfsUtilClazz = Class.forName("org.apache.hadoop.hdfs.DFSUtil");<a name="line.67"></a>
<span class="sourceLineNo">068</span> }<a name="line.68"></a>
<span class="sourceLineNo">069</span> if (getNNAddressesMethod == null) {<a name="line.69"></a>
<span class="sourceLineNo">070</span> try {<a name="line.70"></a>
<span class="sourceLineNo">071</span> // getNNServiceRpcAddressesForCluster is available only in version<a name="line.71"></a>
<span class="sourceLineNo">072</span> // equal to or later than Hadoop 2.6<a name="line.72"></a>
<span class="sourceLineNo">073</span> getNNAddressesMethod =<a name="line.73"></a>
<span class="sourceLineNo">074</span> dfsUtilClazz.getMethod("getNNServiceRpcAddressesForCluster", Configuration.class);<a name="line.74"></a>
<span class="sourceLineNo">075</span> } catch (NoSuchMethodException e) {<a name="line.75"></a>
<span class="sourceLineNo">076</span> // If hadoop version is older than hadoop 2.6<a name="line.76"></a>
<span class="sourceLineNo">077</span> getNNAddressesMethod =<a name="line.77"></a>
<span class="sourceLineNo">078</span> dfsUtilClazz.getMethod("getNNServiceRpcAddresses", Configuration.class);<a name="line.78"></a>
<span class="sourceLineNo">079</span> }<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> Map&lt;String, Map&lt;String, InetSocketAddress&gt;&gt; addressMap =<a name="line.83"></a>
<span class="sourceLineNo">084</span> (Map&lt;String, Map&lt;String, InetSocketAddress&gt;&gt;) getNNAddressesMethod<a name="line.84"></a>
<span class="sourceLineNo">085</span> .invoke(null, conf);<a name="line.85"></a>
<span class="sourceLineNo">086</span> String nameService = serviceName.substring(serviceName.indexOf(":") + 1);<a name="line.86"></a>
<span class="sourceLineNo">087</span> if (addressMap.containsKey(nameService)) {<a name="line.87"></a>
<span class="sourceLineNo">088</span> Map&lt;String, InetSocketAddress&gt; nnMap = addressMap.get(nameService);<a name="line.88"></a>
<span class="sourceLineNo">089</span> for (Map.Entry&lt;String, InetSocketAddress&gt; e2 : nnMap.entrySet()) {<a name="line.89"></a>
<span class="sourceLineNo">090</span> InetSocketAddress addr = e2.getValue();<a name="line.90"></a>
<span class="sourceLineNo">091</span> addresses.add(addr);<a name="line.91"></a>
<span class="sourceLineNo">092</span> }<a name="line.92"></a>
<span class="sourceLineNo">093</span> }<a name="line.93"></a>
<span class="sourceLineNo">094</span> } catch (Exception e) {<a name="line.94"></a>
<span class="sourceLineNo">095</span> LOG.warn("DFSUtil.getNNServiceRpcAddresses failed. serviceName=" + serviceName, e);<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span> } else {<a name="line.97"></a>
<span class="sourceLineNo">098</span> URI uri = fs.getUri();<a name="line.98"></a>
<span class="sourceLineNo">099</span> int port = uri.getPort();<a name="line.99"></a>
<span class="sourceLineNo">100</span> if (port &lt; 0) {<a name="line.100"></a>
<span class="sourceLineNo">101</span> int idx = serviceName.indexOf(':');<a name="line.101"></a>
<span class="sourceLineNo">102</span> port = Integer.parseInt(serviceName.substring(idx+1));<a name="line.102"></a>
<span class="sourceLineNo">103</span> }<a name="line.103"></a>
<span class="sourceLineNo">104</span> InetSocketAddress addr = new InetSocketAddress(uri.getHost(), port);<a name="line.104"></a>
<span class="sourceLineNo">105</span> addresses.add(addr);<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> return addresses;<a name="line.108"></a>
<span class="sourceLineNo">109</span> }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span> /**<a name="line.111"></a>
<span class="sourceLineNo">112</span> * @param conf the Configuration of HBase<a name="line.112"></a>
<span class="sourceLineNo">113</span> * @param srcFs<a name="line.113"></a>
<span class="sourceLineNo">114</span> * @param desFs<a name="line.114"></a>
<span class="sourceLineNo">115</span> * @return Whether srcFs and desFs are on same hdfs or not<a name="line.115"></a>
<span class="sourceLineNo">116</span> */<a name="line.116"></a>
<span class="sourceLineNo">117</span> public static boolean isSameHdfs(Configuration conf, FileSystem srcFs, FileSystem desFs) {<a name="line.117"></a>
<span class="sourceLineNo">118</span> // By getCanonicalServiceName, we could make sure both srcFs and desFs<a name="line.118"></a>
<span class="sourceLineNo">119</span> // show a unified format which contains scheme, host and port.<a name="line.119"></a>
<span class="sourceLineNo">120</span> String srcServiceName = srcFs.getCanonicalServiceName();<a name="line.120"></a>
<span class="sourceLineNo">121</span> String desServiceName = desFs.getCanonicalServiceName();<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span> if (srcServiceName == null || desServiceName == null) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> return false;<a name="line.124"></a>
<span class="sourceLineNo">125</span> }<a name="line.125"></a>
<span class="sourceLineNo">126</span> if (srcServiceName.equals(desServiceName)) {<a name="line.126"></a>
<span class="sourceLineNo">127</span> return true;<a name="line.127"></a>
<span class="sourceLineNo">128</span> }<a name="line.128"></a>
<span class="sourceLineNo">129</span> if (srcServiceName.startsWith("ha-hdfs") &amp;&amp; desServiceName.startsWith("ha-hdfs")) {<a name="line.129"></a>
<span class="sourceLineNo">130</span> Collection&lt;String&gt; internalNameServices =<a name="line.130"></a>
<span class="sourceLineNo">131</span> conf.getTrimmedStringCollection("dfs.internal.nameservices");<a name="line.131"></a>
<span class="sourceLineNo">132</span> if (!internalNameServices.isEmpty()) {<a name="line.132"></a>
<span class="sourceLineNo">133</span> if (internalNameServices.contains(srcServiceName.split(":")[1])) {<a name="line.133"></a>
<span class="sourceLineNo">134</span> return true;<a name="line.134"></a>
<span class="sourceLineNo">135</span> } else {<a name="line.135"></a>
<span class="sourceLineNo">136</span> return false;<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<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> if (srcFs instanceof DistributedFileSystem &amp;&amp; desFs instanceof DistributedFileSystem) {<a name="line.140"></a>
<span class="sourceLineNo">141</span> //If one serviceName is an HA format while the other is a non-HA format,<a name="line.141"></a>
<span class="sourceLineNo">142</span> // maybe they refer to the same FileSystem.<a name="line.142"></a>
<span class="sourceLineNo">143</span> //For example, srcFs is "ha-hdfs://nameservices" and desFs is "hdfs://activeNamenode:port"<a name="line.143"></a>
<span class="sourceLineNo">144</span> Set&lt;InetSocketAddress&gt; srcAddrs = getNNAddresses((DistributedFileSystem) srcFs, conf);<a name="line.144"></a>
<span class="sourceLineNo">145</span> Set&lt;InetSocketAddress&gt; desAddrs = getNNAddresses((DistributedFileSystem) desFs, conf);<a name="line.145"></a>
<span class="sourceLineNo">146</span> if (Sets.intersection(srcAddrs, desAddrs).size() &gt; 0) {<a name="line.146"></a>
<span class="sourceLineNo">147</span> return true;<a name="line.147"></a>
<span class="sourceLineNo">148</span> }<a name="line.148"></a>
<span class="sourceLineNo">149</span> }<a name="line.149"></a>
<span class="sourceLineNo">150</span><a name="line.150"></a>
<span class="sourceLineNo">151</span> return false;<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> /**<a name="line.154"></a>
<span class="sourceLineNo">155</span> * Recover the lease from HDFS, retrying multiple times.<a name="line.155"></a>
<span class="sourceLineNo">156</span> */<a name="line.156"></a>
<span class="sourceLineNo">157</span> @Override<a name="line.157"></a>
<span class="sourceLineNo">158</span> public void recoverFileLease(FileSystem fs, Path p, Configuration conf,<a name="line.158"></a>
<span class="sourceLineNo">159</span> CancelableProgressable reporter) throws IOException {<a name="line.159"></a>
<span class="sourceLineNo">160</span> if (fs instanceof FilterFileSystem) {<a name="line.160"></a>
<span class="sourceLineNo">161</span> fs = ((FilterFileSystem) fs).getRawFileSystem();<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span> // lease recovery not needed for local file system case.<a name="line.163"></a>
<span class="sourceLineNo">164</span> if (!(fs instanceof DistributedFileSystem)) {<a name="line.164"></a>
<span class="sourceLineNo">165</span> return;<a name="line.165"></a>
<span class="sourceLineNo">166</span> }<a name="line.166"></a>
<span class="sourceLineNo">167</span> recoverDFSFileLease((DistributedFileSystem) fs, p, conf, reporter);<a name="line.167"></a>
<span class="sourceLineNo">168</span> }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span> /*<a name="line.170"></a>
<span class="sourceLineNo">171</span> * Run the dfs recover lease. recoverLease is asynchronous. It returns:<a name="line.171"></a>
<span class="sourceLineNo">172</span> * -false when it starts the lease recovery (i.e. lease recovery not *yet* done)<a name="line.172"></a>
<span class="sourceLineNo">173</span> * - true when the lease recovery has succeeded or the file is closed.<a name="line.173"></a>
<span class="sourceLineNo">174</span> * But, we have to be careful. Each time we call recoverLease, it starts the recover lease<a name="line.174"></a>
<span class="sourceLineNo">175</span> * process over from the beginning. We could put ourselves in a situation where we are<a name="line.175"></a>
<span class="sourceLineNo">176</span> * doing nothing but starting a recovery, interrupting it to start again, and so on.<a name="line.176"></a>
<span class="sourceLineNo">177</span> * The findings over in HBASE-8354 have it that the namenode will try to recover the lease<a name="line.177"></a>
<span class="sourceLineNo">178</span> * on the file's primary node. If all is well, it should return near immediately. But,<a name="line.178"></a>
<span class="sourceLineNo">179</span> * as is common, it is the very primary node that has crashed and so the namenode will be<a name="line.179"></a>
<span class="sourceLineNo">180</span> * stuck waiting on a socket timeout before it will ask another datanode to start the<a name="line.180"></a>
<span class="sourceLineNo">181</span> * recovery. It does not help if we call recoverLease in the meantime and in particular,<a name="line.181"></a>
<span class="sourceLineNo">182</span> * subsequent to the socket timeout, a recoverLease invocation will cause us to start<a name="line.182"></a>
<span class="sourceLineNo">183</span> * over from square one (possibly waiting on socket timeout against primary node). So,<a name="line.183"></a>
<span class="sourceLineNo">184</span> * in the below, we do the following:<a name="line.184"></a>
<span class="sourceLineNo">185</span> * 1. Call recoverLease.<a name="line.185"></a>
<span class="sourceLineNo">186</span> * 2. If it returns true, break.<a name="line.186"></a>
<span class="sourceLineNo">187</span> * 3. If it returns false, wait a few seconds and then call it again.<a name="line.187"></a>
<span class="sourceLineNo">188</span> * 4. If it returns true, break.<a name="line.188"></a>
<span class="sourceLineNo">189</span> * 5. If it returns false, wait for what we think the datanode socket timeout is<a name="line.189"></a>
<span class="sourceLineNo">190</span> * (configurable) and then try again.<a name="line.190"></a>
<span class="sourceLineNo">191</span> * 6. If it returns true, break.<a name="line.191"></a>
<span class="sourceLineNo">192</span> * 7. If it returns false, repeat starting at step 5. above.<a name="line.192"></a>
<span class="sourceLineNo">193</span> *<a name="line.193"></a>
<span class="sourceLineNo">194</span> * If HDFS-4525 is available, call it every second and we might be able to exit early.<a name="line.194"></a>
<span class="sourceLineNo">195</span> */<a name="line.195"></a>
<span class="sourceLineNo">196</span> boolean recoverDFSFileLease(final DistributedFileSystem dfs, final Path p,<a name="line.196"></a>
<span class="sourceLineNo">197</span> final Configuration conf, final CancelableProgressable reporter)<a name="line.197"></a>
<span class="sourceLineNo">198</span> throws IOException {<a name="line.198"></a>
<span class="sourceLineNo">199</span> LOG.info("Recover lease on dfs file " + p);<a name="line.199"></a>
<span class="sourceLineNo">200</span> long startWaiting = EnvironmentEdgeManager.currentTime();<a name="line.200"></a>
<span class="sourceLineNo">201</span> // Default is 15 minutes. It's huge, but the idea is that if we have a major issue, HDFS<a name="line.201"></a>
<span class="sourceLineNo">202</span> // usually needs 10 minutes before marking the nodes as dead. So we're putting ourselves<a name="line.202"></a>
<span class="sourceLineNo">203</span> // beyond that limit 'to be safe'.<a name="line.203"></a>
<span class="sourceLineNo">204</span> long recoveryTimeout = conf.getInt("hbase.lease.recovery.timeout", 900000) + startWaiting;<a name="line.204"></a>
<span class="sourceLineNo">205</span> // This setting should be a little bit above what the cluster dfs heartbeat is set to.<a name="line.205"></a>
<span class="sourceLineNo">206</span> long firstPause = conf.getInt("hbase.lease.recovery.first.pause", 4000);<a name="line.206"></a>
<span class="sourceLineNo">207</span> // This should be set to how long it'll take for us to timeout against primary datanode if it<a name="line.207"></a>
<span class="sourceLineNo">208</span> // is dead. We set it to 64 seconds, 4 second than the default READ_TIMEOUT in HDFS, the<a name="line.208"></a>
<span class="sourceLineNo">209</span> // default value for DFS_CLIENT_SOCKET_TIMEOUT_KEY. If recovery is still failing after this<a name="line.209"></a>
<span class="sourceLineNo">210</span> // timeout, then further recovery will take liner backoff with this base, to avoid endless<a name="line.210"></a>
<span class="sourceLineNo">211</span> // preemptions when this value is not properly configured.<a name="line.211"></a>
<span class="sourceLineNo">212</span> long subsequentPauseBase = conf.getLong("hbase.lease.recovery.dfs.timeout", 64 * 1000);<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span> Method isFileClosedMeth = null;<a name="line.214"></a>
<span class="sourceLineNo">215</span> // whether we need to look for isFileClosed method<a name="line.215"></a>
<span class="sourceLineNo">216</span> boolean findIsFileClosedMeth = true;<a name="line.216"></a>
<span class="sourceLineNo">217</span> boolean recovered = false;<a name="line.217"></a>
<span class="sourceLineNo">218</span> // We break the loop if we succeed the lease recovery, timeout, or we throw an exception.<a name="line.218"></a>
<span class="sourceLineNo">219</span> for (int nbAttempt = 0; !recovered; nbAttempt++) {<a name="line.219"></a>
<span class="sourceLineNo">220</span> recovered = recoverLease(dfs, nbAttempt, p, startWaiting);<a name="line.220"></a>
<span class="sourceLineNo">221</span> if (recovered) break;<a name="line.221"></a>
<span class="sourceLineNo">222</span> checkIfCancelled(reporter);<a name="line.222"></a>
<span class="sourceLineNo">223</span> if (checkIfTimedout(conf, recoveryTimeout, nbAttempt, p, startWaiting)) break;<a name="line.223"></a>
<span class="sourceLineNo">224</span> try {<a name="line.224"></a>
<span class="sourceLineNo">225</span> // On the first time through wait the short 'firstPause'.<a name="line.225"></a>
<span class="sourceLineNo">226</span> if (nbAttempt == 0) {<a name="line.226"></a>
<span class="sourceLineNo">227</span> Thread.sleep(firstPause);<a name="line.227"></a>
<span class="sourceLineNo">228</span> } else {<a name="line.228"></a>
<span class="sourceLineNo">229</span> // Cycle here until (subsequentPause * nbAttempt) elapses. While spinning, check<a name="line.229"></a>
<span class="sourceLineNo">230</span> // isFileClosed if available (should be in hadoop 2.0.5... not in hadoop 1 though.<a name="line.230"></a>
<span class="sourceLineNo">231</span> long localStartWaiting = EnvironmentEdgeManager.currentTime();<a name="line.231"></a>
<span class="sourceLineNo">232</span> while ((EnvironmentEdgeManager.currentTime() - localStartWaiting) &lt;<a name="line.232"></a>
<span class="sourceLineNo">233</span> subsequentPauseBase * nbAttempt) {<a name="line.233"></a>
<span class="sourceLineNo">234</span> Thread.sleep(conf.getInt("hbase.lease.recovery.pause", 1000));<a name="line.234"></a>
<span class="sourceLineNo">235</span> if (findIsFileClosedMeth) {<a name="line.235"></a>
<span class="sourceLineNo">236</span> try {<a name="line.236"></a>
<span class="sourceLineNo">237</span> isFileClosedMeth = dfs.getClass().getMethod("isFileClosed",<a name="line.237"></a>
<span class="sourceLineNo">238</span> new Class[]{ Path.class });<a name="line.238"></a>
<span class="sourceLineNo">239</span> } catch (NoSuchMethodException nsme) {<a name="line.239"></a>
<span class="sourceLineNo">240</span> LOG.debug("isFileClosed not available");<a name="line.240"></a>
<span class="sourceLineNo">241</span> } finally {<a name="line.241"></a>
<span class="sourceLineNo">242</span> findIsFileClosedMeth = false;<a name="line.242"></a>
<span class="sourceLineNo">243</span> }<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span> if (isFileClosedMeth != null &amp;&amp; isFileClosed(dfs, isFileClosedMeth, p)) {<a name="line.245"></a>
<span class="sourceLineNo">246</span> recovered = true;<a name="line.246"></a>
<span class="sourceLineNo">247</span> break;<a name="line.247"></a>
<span class="sourceLineNo">248</span> }<a name="line.248"></a>
<span class="sourceLineNo">249</span> checkIfCancelled(reporter);<a name="line.249"></a>
<span class="sourceLineNo">250</span> }<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span> } catch (InterruptedException ie) {<a name="line.252"></a>
<span class="sourceLineNo">253</span> InterruptedIOException iioe = new InterruptedIOException();<a name="line.253"></a>
<span class="sourceLineNo">254</span> iioe.initCause(ie);<a name="line.254"></a>
<span class="sourceLineNo">255</span> throw iioe;<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> return recovered;<a name="line.258"></a>
<span class="sourceLineNo">259</span> }<a name="line.259"></a>
<span class="sourceLineNo">260</span><a name="line.260"></a>
<span class="sourceLineNo">261</span> boolean checkIfTimedout(final Configuration conf, final long recoveryTimeout,<a name="line.261"></a>
<span class="sourceLineNo">262</span> final int nbAttempt, final Path p, final long startWaiting) {<a name="line.262"></a>
<span class="sourceLineNo">263</span> if (recoveryTimeout &lt; EnvironmentEdgeManager.currentTime()) {<a name="line.263"></a>
<span class="sourceLineNo">264</span> LOG.warn("Cannot recoverLease after trying for " +<a name="line.264"></a>
<span class="sourceLineNo">265</span> conf.getInt("hbase.lease.recovery.timeout", 900000) +<a name="line.265"></a>
<span class="sourceLineNo">266</span> "ms (hbase.lease.recovery.timeout); continuing, but may be DATALOSS!!!; " +<a name="line.266"></a>
<span class="sourceLineNo">267</span> getLogMessageDetail(nbAttempt, p, startWaiting));<a name="line.267"></a>
<span class="sourceLineNo">268</span> return true;<a name="line.268"></a>
<span class="sourceLineNo">269</span> }<a name="line.269"></a>
<span class="sourceLineNo">270</span> return false;<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> /**<a name="line.273"></a>
<span class="sourceLineNo">274</span> * Try to recover the lease.<a name="line.274"></a>
<span class="sourceLineNo">275</span> * @param dfs<a name="line.275"></a>
<span class="sourceLineNo">276</span> * @param nbAttempt<a name="line.276"></a>
<span class="sourceLineNo">277</span> * @param p<a name="line.277"></a>
<span class="sourceLineNo">278</span> * @param startWaiting<a name="line.278"></a>
<span class="sourceLineNo">279</span> * @return True if dfs#recoverLease came by true.<a name="line.279"></a>
<span class="sourceLineNo">280</span> * @throws FileNotFoundException<a name="line.280"></a>
<span class="sourceLineNo">281</span> */<a name="line.281"></a>
<span class="sourceLineNo">282</span> boolean recoverLease(final DistributedFileSystem dfs, final int nbAttempt, final Path p,<a name="line.282"></a>
<span class="sourceLineNo">283</span> final long startWaiting)<a name="line.283"></a>
<span class="sourceLineNo">284</span> throws FileNotFoundException {<a name="line.284"></a>
<span class="sourceLineNo">285</span> boolean recovered = false;<a name="line.285"></a>
<span class="sourceLineNo">286</span> try {<a name="line.286"></a>
<span class="sourceLineNo">287</span> recovered = dfs.recoverLease(p);<a name="line.287"></a>
<span class="sourceLineNo">288</span> LOG.info((recovered? "Recovered lease, ": "Failed to recover lease, ") +<a name="line.288"></a>
<span class="sourceLineNo">289</span> getLogMessageDetail(nbAttempt, p, startWaiting));<a name="line.289"></a>
<span class="sourceLineNo">290</span> } catch (IOException e) {<a name="line.290"></a>
<span class="sourceLineNo">291</span> if (e instanceof LeaseExpiredException &amp;&amp; e.getMessage().contains("File does not exist")) {<a name="line.291"></a>
<span class="sourceLineNo">292</span> // This exception comes out instead of FNFE, fix it<a name="line.292"></a>
<span class="sourceLineNo">293</span> throw new FileNotFoundException("The given WAL wasn't found at " + p);<a name="line.293"></a>
<span class="sourceLineNo">294</span> } else if (e instanceof FileNotFoundException) {<a name="line.294"></a>
<span class="sourceLineNo">295</span> throw (FileNotFoundException)e;<a name="line.295"></a>
<span class="sourceLineNo">296</span> }<a name="line.296"></a>
<span class="sourceLineNo">297</span> LOG.warn(getLogMessageDetail(nbAttempt, p, startWaiting), e);<a name="line.297"></a>
<span class="sourceLineNo">298</span> }<a name="line.298"></a>
<span class="sourceLineNo">299</span> return recovered;<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> * @param nbAttempt<a name="line.303"></a>
<span class="sourceLineNo">304</span> * @param p<a name="line.304"></a>
<span class="sourceLineNo">305</span> * @param startWaiting<a name="line.305"></a>
<span class="sourceLineNo">306</span> * @return Detail to append to any log message around lease recovering.<a name="line.306"></a>
<span class="sourceLineNo">307</span> */<a name="line.307"></a>
<span class="sourceLineNo">308</span> private String getLogMessageDetail(final int nbAttempt, final Path p, final long startWaiting) {<a name="line.308"></a>
<span class="sourceLineNo">309</span> return "attempt=" + nbAttempt + " on file=" + p + " after " +<a name="line.309"></a>
<span class="sourceLineNo">310</span> (EnvironmentEdgeManager.currentTime() - startWaiting) + "ms";<a name="line.310"></a>
<span class="sourceLineNo">311</span> }<a name="line.311"></a>
<span class="sourceLineNo">312</span><a name="line.312"></a>
<span class="sourceLineNo">313</span> /**<a name="line.313"></a>
<span class="sourceLineNo">314</span> * Call HDFS-4525 isFileClosed if it is available.<a name="line.314"></a>
<span class="sourceLineNo">315</span> * @param dfs<a name="line.315"></a>
<span class="sourceLineNo">316</span> * @param m<a name="line.316"></a>
<span class="sourceLineNo">317</span> * @param p<a name="line.317"></a>
<span class="sourceLineNo">318</span> * @return True if file is closed.<a name="line.318"></a>
<span class="sourceLineNo">319</span> */<a name="line.319"></a>
<span class="sourceLineNo">320</span> private boolean isFileClosed(final DistributedFileSystem dfs, final Method m, final Path p) {<a name="line.320"></a>
<span class="sourceLineNo">321</span> try {<a name="line.321"></a>
<span class="sourceLineNo">322</span> return (Boolean) m.invoke(dfs, p);<a name="line.322"></a>
<span class="sourceLineNo">323</span> } catch (SecurityException e) {<a name="line.323"></a>
<span class="sourceLineNo">324</span> LOG.warn("No access", e);<a name="line.324"></a>
<span class="sourceLineNo">325</span> } catch (Exception e) {<a name="line.325"></a>
<span class="sourceLineNo">326</span> LOG.warn("Failed invocation for " + p.toString(), e);<a name="line.326"></a>
<span class="sourceLineNo">327</span> }<a name="line.327"></a>
<span class="sourceLineNo">328</span> return false;<a name="line.328"></a>
<span class="sourceLineNo">329</span> }<a name="line.329"></a>
<span class="sourceLineNo">330</span><a name="line.330"></a>
<span class="sourceLineNo">331</span> void checkIfCancelled(final CancelableProgressable reporter)<a name="line.331"></a>
<span class="sourceLineNo">332</span> throws InterruptedIOException {<a name="line.332"></a>
<span class="sourceLineNo">333</span> if (reporter == null) return;<a name="line.333"></a>
<span class="sourceLineNo">334</span> if (!reporter.progress()) throw new InterruptedIOException("Operation cancelled");<a name="line.334"></a>
<span class="sourceLineNo">335</span> }<a name="line.335"></a>
<span class="sourceLineNo">336</span>}<a name="line.336"></a>
</pre>
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