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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.client.locking;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.concurrent.CountDownLatch;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.concurrent.TimeUnit;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.conf.Configuration;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.Abortable;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.slf4j.Logger;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.slf4j.LoggerFactory;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockHeartbeatRequest;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockHeartbeatResponse;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockRequest;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockService;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span>/**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Lock for HBase Entity either a Table, a Namespace, or Regions. These are remote locks which live<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * on master, and need periodic heartbeats to keep them alive. (Once we request the lock, internally<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * an heartbeat thread will be started on the client). If master does not receive the heartbeat in<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * time, it'll release the lock and make it available to other users.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * <p><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Use {@link LockServiceClient} to build instances. Then call {@link #requestLock()}.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * {@link #requestLock} will contact master to queue the lock and start the heartbeat thread which<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * will check lock's status periodically and once the lock is acquired, it will send the heartbeats<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * to the master.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * <p><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Use {@link #await} or {@link #await(long, TimeUnit)} to wait for the lock to be acquired. Always<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * call {@link #unlock()} irrespective of whether lock was acquired or not. If the lock was<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * acquired, it'll be released. If it was not acquired, it is possible that master grants the lock<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * in future and the heartbeat thread keeps it alive forever by sending heartbeats. Calling<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * {@link #unlock()} will stop the heartbeat thread and cancel the lock queued on master.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * <p><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * There are 4 ways in which these remote locks may be released/can be lost:<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * <ul><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * <li>Call {@link #unlock}.</li><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * <li>Lock times out on master: Can happen because of network issues, GC pauses, etc. Worker thread<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * will call the given abortable as soon as it detects such a situation.</li><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * <li>Fail to contact master: If worker thread can not contact mater and thus fails to send<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * heartbeat before the timeout expires, it assumes that lock is lost and calls the abortable.</li><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * <li>Worker thread is interrupted.</li><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * </ul><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * Use example: <code><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * EntityLock lock = lockServiceClient.*Lock(...., "exampled lock", abortable);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * lock.requestLock();<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * ....<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * ....can do other initializations here since lock is 'asynchronous'...<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * ....<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * if (lock.await(timeout)) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * ....logic requiring mutual exclusion<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * lock.unlock();<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * </code><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span>@InterfaceAudience.Public<a name="line.75"></a> |
| <span class="sourceLineNo">076</span>public class EntityLock {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private static final Logger LOG = LoggerFactory.getLogger(EntityLock.class);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public static final String HEARTBEAT_TIME_BUFFER = "hbase.client.locks.heartbeat.time.buffer.ms";<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final AtomicBoolean locked = new AtomicBoolean(false);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private final CountDownLatch latch = new CountDownLatch(1);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private final LockService.BlockingInterface stub;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final LockHeartbeatWorker worker;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> private final LockRequest lockRequest;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private final Abortable abort;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> // Buffer for unexpected delays (GC, network delay, etc) in heartbeat rpc.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private final int heartbeatTimeBuffer;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> // set to a non-zero value for tweaking sleep time during testing so that worker doesn't wait<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // for long time periods between heartbeats.<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private long testingSleepTime = 0;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private Long procId = null;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> /**<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * Abortable.abort() is called when the lease of the lock will expire. It's up to the user decide<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * if simply abort the process or handle the loss of the lock by aborting the operation that was<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * supposed to be under lock.<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> */<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> EntityLock(Configuration conf, LockService.BlockingInterface stub, LockRequest request,<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> Abortable abort) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> this.stub = stub;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> this.lockRequest = request;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> this.abort = abort;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> this.heartbeatTimeBuffer = conf.getInt(HEARTBEAT_TIME_BUFFER, 10000);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> this.worker = new LockHeartbeatWorker(lockRequest.getDescription());<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> @Override<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public String toString() {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> final StringBuilder sb = new StringBuilder();<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> sb.append("EntityLock locked=");<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> sb.append(locked.get());<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> sb.append(", procId=");<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> sb.append(procId);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> sb.append(", type=");<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> sb.append(lockRequest.getLockType());<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> if (lockRequest.getRegionInfoCount() > 0) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> sb.append(", regions=");<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> for (int i = 0; i < lockRequest.getRegionInfoCount(); ++i) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (i > 0) sb.append(", ");<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> sb.append(lockRequest.getRegionInfo(i));<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> } else if (lockRequest.hasTableName()) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> sb.append(", table=");<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> sb.append(lockRequest.getTableName());<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> } else if (lockRequest.hasNamespace()) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> sb.append(", namespace=");<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> sb.append(lockRequest.getNamespace());<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> sb.append(", description=");<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> sb.append(lockRequest.getDescription());<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> return sb.toString();<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> @InterfaceAudience.Private<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> void setTestingSleepTime(long timeInMillis) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> testingSleepTime = timeInMillis;<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> @InterfaceAudience.Private<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> LockHeartbeatWorker getWorker() {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> return worker;<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> public boolean isLocked() {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> return locked.get();<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> * Sends rpc to the master to request lock. The lock request is queued with other lock requests.<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * Call {@link #await()} to wait on lock. Always call {@link #unlock()} after calling the below,<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * even after error.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> */<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> public void requestLock() throws IOException {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> if (procId == null) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> try {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> procId = stub.requestLock(null, lockRequest).getProcId();<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> } catch (Exception e) {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> throw ProtobufUtil.handleRemoteException(e);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> worker.start();<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> } else {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> LOG.info("Lock already queued : " + toString());<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><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> /**<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @param timeout in milliseconds. If set to 0, waits indefinitely.<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * @return true if lock was acquired; and false if waiting time elapsed before lock could be<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * acquired.<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> */<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> public boolean await(long timeout, TimeUnit timeUnit) throws InterruptedException {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> final boolean result = latch.await(timeout, timeUnit);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> String lockRequestStr = lockRequest.toString().replace("\n", ", ");<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> if (result) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> LOG.info("Acquired " + lockRequestStr);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> } else {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> LOG.info(String.format("Failed acquire in %s %s of %s", timeout, timeUnit.toString(),<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> lockRequestStr));<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> return result;<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> public void await() throws InterruptedException {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> latch.await();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> public void unlock() throws IOException {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> Threads.shutdown(worker.shutdown());<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> try {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> stub.lockHeartbeat(null,<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> LockHeartbeatRequest.newBuilder().setProcId(procId).setKeepAlive(false).build());<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> } catch (Exception e) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> throw ProtobufUtil.handleRemoteException(e);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> protected class LockHeartbeatWorker extends Thread {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> private volatile boolean shutdown = false;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span><a name="line.205"></a> |
| <span class="sourceLineNo">206</span> public LockHeartbeatWorker(final String desc) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> super("LockHeartbeatWorker(" + desc + ")");<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> setDaemon(true);<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> /** Returns Shuts down the thread clean and quietly. */<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> Thread shutdown() {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> shutdown = true;<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> interrupt();<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> return this;<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> }<a name="line.216"></a> |
| <span class="sourceLineNo">217</span><a name="line.217"></a> |
| <span class="sourceLineNo">218</span> @Override<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> public void run() {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> final LockHeartbeatRequest lockHeartbeatRequest =<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> LockHeartbeatRequest.newBuilder().setProcId(procId).build();<a name="line.221"></a> |
| <span class="sourceLineNo">222</span><a name="line.222"></a> |
| <span class="sourceLineNo">223</span> LockHeartbeatResponse response;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> while (true) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> try {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> response = stub.lockHeartbeat(null, lockHeartbeatRequest);<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> } catch (Exception e) {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> e = ProtobufUtil.handleRemoteException(e);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> locked.set(false);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> LOG.error("Heartbeat failed, releasing " + EntityLock.this, e);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> abort.abort("Heartbeat failed", e);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> return;<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> if (!isLocked() && response.getLockStatus() == LockHeartbeatResponse.LockStatus.LOCKED) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> locked.set(true);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> latch.countDown();<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> } else<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> if (isLocked() && response.getLockStatus() == LockHeartbeatResponse.LockStatus.UNLOCKED) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> // Lock timed out.<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> locked.set(false);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> abort.abort("Lock timed out.", null);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> return;<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> try {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> // If lock not acquired yet, poll faster so we can notify faster.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> long sleepTime = 1000;<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> if (isLocked()) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // If lock acquired, then use lock timeout to determine heartbeat rate.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> // If timeout is <heartbeatTimeBuffer, send back to back heartbeats.<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> sleepTime = Math.max(response.getTimeoutMs() - heartbeatTimeBuffer, 1);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> if (testingSleepTime != 0) {<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> sleepTime = testingSleepTime;<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> Thread.sleep(sleepTime);<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> } catch (InterruptedException e) {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> // Since there won't be any more heartbeats, assume lock will be lost.<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> locked.set(false);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> if (!this.shutdown) {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> LOG.error("Interrupted, releasing " + this, e);<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> abort.abort("Worker thread interrupted", e);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> return;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<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> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span>}<a name="line.269"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |