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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;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import static org.apache.hadoop.hbase.HConstants.DEFAULT_HBASE_SPLIT_WAL_MAX_SPLITTER;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.HBASE_SPLIT_WAL_MAX_SPLITTER;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.master.MasterWalManager.META_FILTER;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.master.MasterWalManager.NON_META_FILTER;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Arrays;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.Collections;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Map;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Optional;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.stream.Collectors;<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.FileStatus;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.fs.FileSystem;<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.fs.PathIsNotEmptyDirectoryException;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HConstants;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.master.procedure.SplitWALProcedure;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.wal.WALSplitUtil;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.slf4j.Logger;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.slf4j.LoggerFactory;<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> * Create {@link SplitWALProcedure} for each WAL which need to split. Manage the workers for each<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * {@link SplitWALProcedure}.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Total number of workers is (number of online servers) * (HBASE_SPLIT_WAL_MAX_SPLITTER).<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * Helps assign and release workers for split tasks.<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Provide helper method to delete split WAL file and directory.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> *<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * The user can get the SplitWALProcedures via splitWALs(crashedServer, splitMeta)<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * can get the files that need to split via getWALsToSplit(crashedServer, splitMeta)<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * can delete the splitting WAL and directory via deleteSplitWAL(wal)<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * and deleteSplitWAL(crashedServer)<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * can check if splitting WALs of a crashed server is success via isSplitWALFinished(walPath)<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * can acquire and release a worker for splitting WAL via acquireSplitWALWorker(procedure)<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * and releaseSplitWALWorker(worker, scheduler)<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> *<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * This class is to replace the zk-based WAL splitting related code, {@link MasterWalManager},<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * {@link SplitLogManager}, {@link org.apache.hadoop.hbase.zookeeper.ZKSplitLog} and<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * {@link org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination} can be removed<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * after we switch to procedure-based WAL splitting.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * @see SplitLogManager for the original distributed split WAL manager.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>@InterfaceAudience.Private<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>public class SplitWALManager {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> private static final Logger LOG = LoggerFactory.getLogger(SplitWALManager.class);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private final MasterServices master;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private final SplitWorkerAssigner splitWorkerAssigner;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private final Path rootDir;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private final FileSystem fs;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private final Configuration conf;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private final Path walArchiveDir;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> public SplitWALManager(MasterServices master) throws IOException {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> this.master = master;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> this.conf = master.getConfiguration();<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> this.splitWorkerAssigner = new SplitWorkerAssigner(this.master,<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> conf.getInt(HBASE_SPLIT_WAL_MAX_SPLITTER, DEFAULT_HBASE_SPLIT_WAL_MAX_SPLITTER));<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.rootDir = master.getMasterFileSystem().getWALRootDir();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> this.fs = master.getMasterFileSystem().getWALFileSystem();<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> this.walArchiveDir = new Path(this.rootDir, HConstants.HREGION_OLDLOGDIR_NAME);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public List<Procedure> splitWALs(ServerName crashedServer, boolean splitMeta)<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> throws IOException {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> try {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> // 1. list all splitting files<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> List<FileStatus> splittingFiles = getWALsToSplit(crashedServer, splitMeta);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // 2. create corresponding procedures<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> return createSplitWALProcedures(splittingFiles, crashedServer);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> } catch (IOException e) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> LOG.error("Failed to create procedures for splitting WALs of {}", crashedServer, e);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> throw e;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<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> public List<FileStatus> getWALsToSplit(ServerName serverName, boolean splitMeta)<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> throws IOException {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> List<Path> logDirs = master.getMasterWalManager().getLogDirs(Collections.singleton(serverName));<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> List<FileStatus> fileStatuses =<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> SplitLogManager.getFileList(this.conf, logDirs, splitMeta ? META_FILTER : NON_META_FILTER);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> LOG.info("{} WAL count={}, meta={}", serverName, fileStatuses.size(), splitMeta);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return fileStatuses;<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> private Path getWALSplitDir(ServerName serverName) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> Path logDir =<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> new Path(this.rootDir, AbstractFSWALProvider.getWALDirectoryName(serverName.toString()));<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> return logDir.suffix(AbstractFSWALProvider.SPLITTING_EXT);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> /**<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * Archive processed WAL<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> */<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public void archive(String wal) throws IOException {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> WALSplitUtil.moveWAL(this.fs, new Path(wal), this.walArchiveDir);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> public void deleteWALDir(ServerName serverName) throws IOException {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> Path splitDir = getWALSplitDir(serverName);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> try {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> if (!fs.delete(splitDir, false)) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> LOG.warn("Failed delete {}, contains {}", splitDir, fs.listFiles(splitDir, true));<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> } catch (PathIsNotEmptyDirectoryException e) {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> FileStatus [] files = CommonFSUtils.listStatus(fs, splitDir);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> LOG.warn("PathIsNotEmptyDirectoryException {}",<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> Arrays.stream(files).map(f -> f.getPath()).collect(Collectors.toList()));<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> throw e;<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><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> public boolean isSplitWALFinished(String walPath) throws IOException {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> return !fs.exists(new Path(rootDir, walPath));<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> List<Procedure> createSplitWALProcedures(List<FileStatus> splittingWALs,<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> ServerName crashedServer) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> return splittingWALs.stream()<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> .map(wal -> new SplitWALProcedure(wal.getPath().toString(), crashedServer))<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> .collect(Collectors.toList());<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> /**<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * Acquire a split WAL worker<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * @param procedure split WAL task<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @return an available region server which could execute this task<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * @throws ProcedureSuspendedException if there is no available worker,<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * it will throw this exception to WAIT the procedure.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> */<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> public ServerName acquireSplitWALWorker(Procedure<?> procedure)<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> throws ProcedureSuspendedException {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> Optional<ServerName> worker = splitWorkerAssigner.acquire();<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> if (worker.isPresent()) {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> LOG.debug("Acquired split WAL worker={}", worker.get());<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return worker.get();<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> splitWorkerAssigner.suspend(procedure);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> throw new ProcedureSuspendedException();<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> * After the worker finished the split WAL task, it will release the worker, and wake up all the<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * suspend procedures in the ProcedureEvent<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @param worker worker which is about to release<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * @param scheduler scheduler which is to wake up the procedure event<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> */<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> public void releaseSplitWALWorker(ServerName worker, MasterProcedureScheduler scheduler) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> LOG.debug("Release split WAL worker={}", worker);<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> splitWorkerAssigner.release(worker);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> splitWorkerAssigner.wake(scheduler);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span><a name="line.181"></a> |
| <span class="sourceLineNo">182</span> /**<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * When master restart, there will be a new splitWorkerAssigner. But if there are splitting WAL<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * tasks running on the region server side, they will not be count by the new splitWorkerAssigner.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * Thus we should add the workers of running tasks to the assigner when we load the procedures<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * from MasterProcWALs.<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * @param worker region server which is executing a split WAL task<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> */<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> public void addUsedSplitWALWorker(ServerName worker){<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> splitWorkerAssigner.addUsedWorker(worker);<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> /**<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * help assign and release a worker for each WAL splitting task<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * For each worker, concurrent running splitting task should be no more than maxSplitTasks<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * If a task failed to acquire a worker, it will suspend and wait for workers available<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> *<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> */<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> private static final class SplitWorkerAssigner implements ServerListener {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> private int maxSplitTasks;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> private final ProcedureEvent<?> event;<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> private Map<ServerName, Integer> currentWorkers = new HashMap<>();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> private MasterServices master;<a name="line.203"></a> |
| <span class="sourceLineNo">204</span><a name="line.204"></a> |
| <span class="sourceLineNo">205</span> public SplitWorkerAssigner(MasterServices master, int maxSplitTasks) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> this.maxSplitTasks = maxSplitTasks;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> this.master = master;<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> this.event = new ProcedureEvent<>("split-WAL-worker-assigning");<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> // ServerManager might be null in a test context where we are mocking; allow for this<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> ServerManager sm = this.master.getServerManager();<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> if (sm != null) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> sm.registerListener(this);<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><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public synchronized Optional<ServerName> acquire() {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> List<ServerName> serverList = master.getServerManager().getOnlineServersList();<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> Collections.shuffle(serverList);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> Optional<ServerName> worker = serverList.stream().filter(<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> serverName -> !currentWorkers.containsKey(serverName) || currentWorkers.get(serverName) > 0)<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> .findAny();<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> if (worker.isPresent()) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> currentWorkers.compute(worker.get(), (serverName,<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> availableWorker) -> availableWorker == null ? maxSplitTasks - 1 : availableWorker - 1);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return worker;<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> public synchronized void release(ServerName serverName) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> currentWorkers.compute(serverName, (k, v) -> v == null ? null : v + 1);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> }<a name="line.231"></a> |
| <span class="sourceLineNo">232</span><a name="line.232"></a> |
| <span class="sourceLineNo">233</span> public void suspend(Procedure<?> proc) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> event.suspend();<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> event.suspendIfNotReady(proc);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> public void wake(MasterProcedureScheduler scheduler) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> if (!event.isReady()) {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> event.wake(scheduler);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<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> @Override<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> public void serverAdded(ServerName worker) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> this.wake(master.getMasterProcedureExecutor().getEnvironment().getProcedureScheduler());<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> public synchronized void addUsedWorker(ServerName worker) {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> // load used worker when master restart<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> currentWorkers.compute(worker, (serverName,<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> availableWorker) -> availableWorker == null ? maxSplitTasks - 1 : availableWorker - 1);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span>}<a name="line.255"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
