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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.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 org.apache.hadoop.hbase.TableName;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.master.HMaster;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.procedure2.LockType;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.util.NonceKey;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.slf4j.Logger;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.slf4j.LoggerFactory;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * Functions to acquire lock on table/namespace/regions.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> */<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>@InterfaceAudience.Private<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>public final class LockManager {<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private static final Logger LOG = LoggerFactory.getLogger(LockManager.class);<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private final HMaster master;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private final RemoteLocks remoteLocks;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> public LockManager(HMaster master) {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> this.master = master;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> this.remoteLocks = new RemoteLocks();<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> }<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> public RemoteLocks remoteLocks() {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> return remoteLocks;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> }<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> public MasterLock createMasterLock(final String namespace, final LockType type,<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> final String description) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> return new MasterLock(namespace, type, description);<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> }<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> public MasterLock createMasterLock(final TableName tableName, final LockType type,<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> final String description) {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> return new MasterLock(tableName, type, description);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> public MasterLock createMasterLock(final RegionInfo[] regionInfos, final String description) {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> return new MasterLock(regionInfos, description);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private void submitProcedure(final LockProcedure proc, final NonceKey nonceKey) {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> proc.setOwner(master.getMasterProcedureExecutor().getEnvironment().getRequestUser());<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> master.getMasterProcedureExecutor().submitProcedure(proc, nonceKey);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> /**<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * Locks on namespace/table/regions. Underneath, uses procedure framework and queues a<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * {@link LockProcedure} which waits in a queue until scheduled. Use this lock instead<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * LockManager.remoteLocks() for MASTER ONLY operations for two advantages: - no need of polling<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * on LockProcedure to check if lock was acquired. - Generous timeout for lock preemption (default<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * 10 min), no need to spawn thread for heartbeats. (timeout configuration<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * {@link LockProcedure#DEFAULT_LOCAL_MASTER_LOCKS_TIMEOUT_MS}).<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public class MasterLock {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private final String namespace;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private final TableName tableName;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final RegionInfo[] regionInfos;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private final LockType type;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private final String description;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private LockProcedure proc = null;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> public MasterLock(final String namespace, final LockType type, final String description) {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> this.namespace = namespace;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> this.tableName = null;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> this.regionInfos = null;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> this.type = type;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> this.description = description;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public MasterLock(final TableName tableName, final LockType type, final String description) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> this.namespace = null;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> this.tableName = tableName;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> this.regionInfos = null;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> this.type = type;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> this.description = description;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> public MasterLock(final RegionInfo[] regionInfos, final String description) {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> this.namespace = null;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> this.tableName = null;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> this.regionInfos = regionInfos;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> this.type = LockType.EXCLUSIVE;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> this.description = description;<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> * Acquire the lock within a wait time.<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * @param timeoutMs The maximum time (in milliseconds) to wait for the lock, 0 to wait<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * indefinitely<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * @return True if the lock was acquired, false if waiting time elapsed before the lock was<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * acquired<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @throws InterruptedException If the thread is interrupted while waiting to acquire the lock<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> */<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> public boolean tryAcquire(final long timeoutMs) throws InterruptedException {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> if (proc != null && proc.isLocked()) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return true;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> // Use new condition and procedure every time lock is requested.<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> final CountDownLatch lockAcquireLatch = new CountDownLatch(1);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (regionInfos != null) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> proc = new LockProcedure(master.getConfiguration(), regionInfos, type, description,<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> lockAcquireLatch);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> } else if (tableName != null) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> proc = new LockProcedure(master.getConfiguration(), tableName, type, description,<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> lockAcquireLatch);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> } else if (namespace != null) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> proc = new LockProcedure(master.getConfiguration(), namespace, type, description,<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> lockAcquireLatch);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> } else {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> throw new UnsupportedOperationException("no namespace/table/region provided");<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span><a name="line.137"></a> |
| <span class="sourceLineNo">138</span> // The user of a MasterLock should be 'hbase', the only case where this is not true<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // is if from inside a coprocessor we try to take a master lock (which should be avoided)<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> proc.setOwner(master.getMasterProcedureExecutor().getEnvironment().getRequestUser());<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> master.getMasterProcedureExecutor().submitProcedure(proc);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> long deadline =<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> (timeoutMs > 0) ? EnvironmentEdgeManager.currentTime() + timeoutMs : Long.MAX_VALUE;<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> while (deadline >= EnvironmentEdgeManager.currentTime() && !proc.isLocked()) {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> try {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> lockAcquireLatch.await(deadline - EnvironmentEdgeManager.currentTime(),<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> TimeUnit.MILLISECONDS);<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> } catch (InterruptedException e) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> LOG.info("InterruptedException when waiting for lock: " + proc.toString());<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> // kind of weird, releasing a lock which is not locked. This is to make the procedure<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // finish immediately whenever it gets scheduled so that it doesn't hold the lock.<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> release();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> throw e;<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> }<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if (!proc.isLocked()) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> LOG.info("Timed out waiting to acquire procedure lock: " + proc.toString());<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> release();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> return false;<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> return true;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> /**<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * Release the lock. No-op if the lock was never acquired.<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> */<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> public void release() {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> if (proc != null) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> proc.unlock(master.getMasterProcedureExecutor().getEnvironment());<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> proc = null;<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> @Override<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> public String toString() {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> return "MasterLock: proc = " + proc.toString();<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> LockProcedure getProc() {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> return proc;<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><a name="line.184"></a> |
| <span class="sourceLineNo">185</span> /**<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * Locks on namespace/table/regions for remote operations. Since remote operations are unreliable<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * and the client/RS may die anytime and never release locks, regular heartbeats are required to<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * keep the lock held.<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> */<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> public class RemoteLocks {<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> public long requestNamespaceLock(final String namespace, final LockType type,<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> final String description, final NonceKey nonceKey)<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> throws IllegalArgumentException, IOException {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> master.getMasterCoprocessorHost().preRequestLock(namespace, null, null, type, description);<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> final LockProcedure proc =<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> new LockProcedure(master.getConfiguration(), namespace, type, description, null);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> submitProcedure(proc, nonceKey);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> master.getMasterCoprocessorHost().postRequestLock(namespace, null, null, type, description);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return proc.getProcId();<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> public long requestTableLock(final TableName tableName, final LockType type,<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> final String description, final NonceKey nonceKey)<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> throws IllegalArgumentException, IOException {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> master.getMasterCoprocessorHost().preRequestLock(null, tableName, null, type, description);<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> final LockProcedure proc =<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> new LockProcedure(master.getConfiguration(), tableName, type, description, null);<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> submitProcedure(proc, nonceKey);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> master.getMasterCoprocessorHost().postRequestLock(null, tableName, null, type, description);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> return proc.getProcId();<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> }<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> * @throws IllegalArgumentException if all regions are not from same table.<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> */<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public long requestRegionsLock(final RegionInfo[] regionInfos, final String description,<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> final NonceKey nonceKey) throws IllegalArgumentException, IOException {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> master.getMasterCoprocessorHost().preRequestLock(null, null, regionInfos, LockType.EXCLUSIVE,<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> description);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> final LockProcedure proc = new LockProcedure(master.getConfiguration(), regionInfos,<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> LockType.EXCLUSIVE, description, null);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> submitProcedure(proc, nonceKey);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> master.getMasterCoprocessorHost().postRequestLock(null, null, regionInfos, LockType.EXCLUSIVE,<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> description);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> return proc.getProcId();<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span><a name="line.227"></a> |
| <span class="sourceLineNo">228</span> /**<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * @param keepAlive if false, release the lock.<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * @return true, if procedure is found and it has the lock; else false.<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> */<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> public boolean lockHeartbeat(final long procId, final boolean keepAlive) throws IOException {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> final LockProcedure proc =<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> master.getMasterProcedureExecutor().getProcedure(LockProcedure.class, procId);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> if (proc == null) return false;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span><a name="line.236"></a> |
| <span class="sourceLineNo">237</span> master.getMasterCoprocessorHost().preLockHeartbeat(proc, keepAlive);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span><a name="line.238"></a> |
| <span class="sourceLineNo">239</span> proc.updateHeartBeat();<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (!keepAlive) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> proc.unlock(master.getMasterProcedureExecutor().getEnvironment());<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> master.getMasterCoprocessorHost().postLockHeartbeat(proc, keepAlive);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span><a name="line.245"></a> |
| <span class="sourceLineNo">246</span> return proc.isLocked();<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span>}<a name="line.249"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
