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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.procedure.flush;<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.ArrayList;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Collection;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.concurrent.Callable;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.ExecutionException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.concurrent.ExecutorCompletionService;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.Future;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.TimeUnit;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.Abortable;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.DroppedSnapshotException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.TableName;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.procedure.ProcedureMember;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.procedure.ProcedureMemberRpcs;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.procedure.RegionServerProcedureManager;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.procedure.Subprocedure;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.procedure.SubprocedureFactory;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.Strings;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.zookeeper.KeeperException;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.slf4j.Logger;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.slf4j.LoggerFactory;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableList;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span>/**<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * This manager class handles flushing of the regions for table on a {@link HRegionServer}.<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>public class RegionServerFlushTableProcedureManager extends RegionServerProcedureManager {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final Logger LOG =<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> LoggerFactory.getLogger(RegionServerFlushTableProcedureManager.class);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private static final String CONCURENT_FLUSH_TASKS_KEY =<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> "hbase.flush.procedure.region.concurrentTasks";<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> private static final int DEFAULT_CONCURRENT_FLUSH_TASKS = 3;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> public static final String FLUSH_REQUEST_THREADS_KEY =<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> "hbase.flush.procedure.region.pool.threads";<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> public static final int FLUSH_REQUEST_THREADS_DEFAULT = 10;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> public static final String FLUSH_TIMEOUT_MILLIS_KEY = "hbase.flush.procedure.region.timeout";<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> public static final long FLUSH_TIMEOUT_MILLIS_DEFAULT = 60000;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public static final String FLUSH_REQUEST_WAKE_MILLIS_KEY =<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> "hbase.flush.procedure.region.wakefrequency";<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private static final long FLUSH_REQUEST_WAKE_MILLIS_DEFAULT = 500;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private RegionServerServices rss;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private ProcedureMemberRpcs memberRpcs;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private ProcedureMember member;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> /**<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * Exposed for testing.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @param conf HBase configuration.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @param server region server.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * @param memberRpc use specified memberRpc instance<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * @param procMember use specified ProcedureMember<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> RegionServerFlushTableProcedureManager(Configuration conf, HRegionServer server,<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> ProcedureMemberRpcs memberRpc, ProcedureMember procMember) {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> this.rss = server;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> this.memberRpcs = memberRpc;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> this.member = procMember;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public RegionServerFlushTableProcedureManager() {<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> /**<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * Start accepting flush table requests.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> */<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> @Override<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> public void start() {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> LOG.debug("Start region server flush procedure manager " + rss.getServerName().toString());<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> this.memberRpcs.start(rss.getServerName().toString(), member);<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> /**<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * Close <tt>this</tt> and all running tasks<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * @param force forcefully stop all running tasks<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> */<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> @Override<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> public void stop(boolean force) throws IOException {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> String mode = force ? "abruptly" : "gracefully";<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> LOG.info("Stopping region server flush procedure manager " + mode + ".");<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> try {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> this.member.close();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> } finally {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> this.memberRpcs.close();<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><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> /**<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * If in a running state, creates the specified subprocedure to flush table regions. Because this<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * gets the local list of regions to flush and not the set the master had, there is a possibility<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * of a race where regions may be missed.<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * @return Subprocedure to submit to the ProcedureMember.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> */<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> public Subprocedure buildSubprocedure(String table, List<String> families) {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> // don't run the subprocedure if the parent is stop(ping)<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> if (rss.isStopping() || rss.isStopped()) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> throw new IllegalStateException("Can't start flush region subprocedure on RS: "<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> + rss.getServerName() + ", because stopping/stopped!");<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> // check to see if this server is hosting any regions for the table<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> List<HRegion> involvedRegions;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> try {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> involvedRegions = getRegionsToFlush(table);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> } catch (IOException e1) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> throw new IllegalStateException("Failed to figure out if there is region to flush.", e1);<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> // We need to run the subprocedure even if we have no relevant regions. The coordinator<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> // expects participation in the procedure and without sending message the master procedure<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // will hang and fail.<a name="line.152"></a> |
| <span class="sourceLineNo">153</span><a name="line.153"></a> |
| <span class="sourceLineNo">154</span> LOG.debug("Launching subprocedure to flush regions for " + table);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> ForeignExceptionDispatcher exnDispatcher = new ForeignExceptionDispatcher(table);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> Configuration conf = rss.getConfiguration();<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> long timeoutMillis = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY, FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> long wakeMillis =<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> conf.getLong(FLUSH_REQUEST_WAKE_MILLIS_KEY, FLUSH_REQUEST_WAKE_MILLIS_DEFAULT);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> FlushTableSubprocedurePool taskManager =<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> new FlushTableSubprocedurePool(rss.getServerName().toString(), conf, rss);<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return new FlushTableSubprocedure(member, exnDispatcher, wakeMillis, timeoutMillis,<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> involvedRegions, table, families, taskManager);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> /**<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * Get the list of regions to flush for the table on this server It is possible that if a region<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * moves somewhere between the calls we'll miss the region.<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * @return the list of online regions. Empty list is returned if no regions.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> */<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> private List<HRegion> getRegionsToFlush(String table) throws IOException {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> return (List<HRegion>) rss.getRegions(TableName.valueOf(table));<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> public class FlushTableSubprocedureBuilder implements SubprocedureFactory {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> @Override<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> public Subprocedure buildSubprocedure(String name, byte[] data) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> List<String> families = null;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // Currently we do not put other data except families, so it is ok to<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> // judge by length that if families were specified<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> if (data.length > 0) {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> try {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> HBaseProtos.NameStringPair nsp = HBaseProtos.NameStringPair.parseFrom(data);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> families = ImmutableList.copyOf(Strings.SPLITTER.split(nsp.getValue()));<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> } catch (Exception e) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> LOG.error("fail to get families by parsing from data", e);<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> // The name of the procedure instance from the master is the table name.<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> return RegionServerFlushTableProcedureManager.this.buildSubprocedure(name, families);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span><a name="line.194"></a> |
| <span class="sourceLineNo">195</span> }<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> /**<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * We use the FlushTableSubprocedurePool, a class specific thread pool instead of<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * {@link org.apache.hadoop.hbase.executor.ExecutorService}. It uses a<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * {@link java.util.concurrent.ExecutorCompletionService} which provides queuing of completed<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * tasks which lets us efficiently cancel pending tasks upon the earliest operation failures.<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> */<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> static class FlushTableSubprocedurePool {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> private final Abortable abortable;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> private final ExecutorCompletionService<Void> taskPool;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> private final ThreadPoolExecutor executor;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> private volatile boolean stopped;<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> private final List<Future<Void>> futures = new ArrayList<>();<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> private final String name;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span><a name="line.210"></a> |
| <span class="sourceLineNo">211</span> FlushTableSubprocedurePool(String name, Configuration conf, Abortable abortable) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> this.abortable = abortable;<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> // configure the executor service<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> long keepAlive = conf.getLong(RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_KEY,<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> int threads = conf.getInt(CONCURENT_FLUSH_TASKS_KEY, DEFAULT_CONCURRENT_FLUSH_TASKS);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> this.name = name;<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> executor = Threads.getBoundedCachedThreadPool(threads, keepAlive, TimeUnit.MILLISECONDS,<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> new ThreadFactoryBuilder().setNameFormat("rs(" + name + ")-flush-proc-pool-%d")<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> .setDaemon(true).setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> taskPool = new ExecutorCompletionService<>(executor);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> boolean hasTasks() {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> return futures.size() != 0;<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> * Submit a task to the pool. NOTE: all must be submitted before you can safely<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * {@link #waitForOutstandingTasks()}.<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> */<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> void submitTask(final Callable<Void> task) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> Future<Void> f = this.taskPool.submit(task);<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> futures.add(f);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<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> * Wait for all of the currently outstanding tasks submitted via {@link #submitTask(Callable)}.<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * This *must* be called after all tasks are submitted via submitTask.<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> * @return <tt>true</tt> on success, <tt>false</tt> otherwise<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> */<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> boolean waitForOutstandingTasks() throws ForeignException, InterruptedException {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> LOG.debug("Waiting for local region flush to finish.");<a name="line.243"></a> |
| <span class="sourceLineNo">244</span><a name="line.244"></a> |
| <span class="sourceLineNo">245</span> int sz = futures.size();<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> try {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> // Using the completion service to process the futures.<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> for (int i = 0; i < sz; i++) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> Future<Void> f = taskPool.take();<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> f.get();<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> if (!futures.remove(f)) {<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> LOG.warn("unexpected future" + f);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> LOG.debug("Completed " + (i + 1) + "/" + sz + " local region flush tasks.");<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> LOG.debug("Completed " + sz + " local region flush tasks.");<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> return true;<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> } catch (InterruptedException e) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> LOG.warn("Got InterruptedException in FlushSubprocedurePool", e);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> if (!stopped) {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> Thread.currentThread().interrupt();<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> throw new ForeignException("FlushSubprocedurePool", e);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> // we are stopped so we can just exit.<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> } catch (ExecutionException e) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> Throwable cause = e.getCause();<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> if (cause instanceof ForeignException) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> LOG.warn("Rethrowing ForeignException from FlushSubprocedurePool", e);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> throw (ForeignException) e.getCause();<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> } else if (cause instanceof DroppedSnapshotException) {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> // we have to abort the region server according to contract of flush<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> abortable.abort("Received DroppedSnapshotException, aborting", cause);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> LOG.warn("Got Exception in FlushSubprocedurePool", e);<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> throw new ForeignException(name, e.getCause());<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> } finally {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> cancelTasks();<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> return false;<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span><a name="line.281"></a> |
| <span class="sourceLineNo">282</span> /**<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> * This attempts to cancel out all pending and in progress tasks. Does not interrupt the running<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> * tasks itself. An ongoing HRegion.flush() should not be interrupted (see HBASE-13877).<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> */<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> void cancelTasks() throws InterruptedException {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> Collection<Future<Void>> tasks = futures;<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> LOG.debug("cancelling " + tasks.size() + " flush region tasks " + name);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> for (Future<Void> f : tasks) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> f.cancel(false);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> // evict remaining tasks and futures from taskPool.<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> futures.clear();<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> while (taskPool.poll() != null) {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> stop();<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span><a name="line.299"></a> |
| <span class="sourceLineNo">300</span> /**<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * Gracefully shutdown the thread pool. An ongoing HRegion.flush() should not be interrupted<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * (see HBASE-13877)<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> */<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> void stop() {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> if (this.stopped) return;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span><a name="line.306"></a> |
| <span class="sourceLineNo">307</span> this.stopped = true;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> this.executor.shutdown();<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> }<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> * Initialize this region server flush procedure manager Uses a zookeeper based member controller.<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * @param rss region server<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> * @throws KeeperException if the zookeeper cannot be reached<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> */<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> @Override<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> public void initialize(RegionServerServices rss) throws KeeperException {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> this.rss = rss;<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> ZKWatcher zkw = rss.getZooKeeper();<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> this.memberRpcs = new ZKProcedureMemberRpcs(zkw,<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span><a name="line.323"></a> |
| <span class="sourceLineNo">324</span> Configuration conf = rss.getConfiguration();<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> long keepAlive = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY, FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> int opThreads = conf.getInt(FLUSH_REQUEST_THREADS_KEY, FLUSH_REQUEST_THREADS_DEFAULT);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span><a name="line.327"></a> |
| <span class="sourceLineNo">328</span> // create the actual flush table procedure member<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> ThreadPoolExecutor pool =<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> ProcedureMember.defaultPool(rss.getServerName().toString(), opThreads, keepAlive);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> this.member = new ProcedureMember(memberRpcs, pool, new FlushTableSubprocedureBuilder());<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> }<a name="line.332"></a> |
| <span class="sourceLineNo">333</span><a name="line.333"></a> |
| <span class="sourceLineNo">334</span> @Override<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> public String getProcedureSignature() {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> return MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE;<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span>}<a name="line.339"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
