| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.backup.regionserver, class: LogRollBackupSubprocedure"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.backup.regionserver;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.nio.charset.StandardCharsets;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.HashMap;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.List;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.Callable;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.backup.impl.BackupSystemTable;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.client.Connection;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.errorhandling.ForeignException;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.procedure.ProcedureMember;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.procedure.Subprocedure;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.regionserver.HRegionServer;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.regionserver.RegionServerServices;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.wal.WAL;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.Logger;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40">/**</span> |
| <span class="source-line-no">041</span><span id="line-41"> * This backup sub-procedure implementation forces a WAL rolling on a RS.</span> |
| <span class="source-line-no">042</span><span id="line-42"> */</span> |
| <span class="source-line-no">043</span><span id="line-43">@InterfaceAudience.Private</span> |
| <span class="source-line-no">044</span><span id="line-44">public class LogRollBackupSubprocedure extends Subprocedure {</span> |
| <span class="source-line-no">045</span><span id="line-45"> private static final Logger LOG = LoggerFactory.getLogger(LogRollBackupSubprocedure.class);</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> private final RegionServerServices rss;</span> |
| <span class="source-line-no">048</span><span id="line-48"> private final LogRollBackupSubprocedurePool taskManager;</span> |
| <span class="source-line-no">049</span><span id="line-49"> private String backupRoot;</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> public LogRollBackupSubprocedure(RegionServerServices rss, ProcedureMember member,</span> |
| <span class="source-line-no">052</span><span id="line-52"> ForeignExceptionDispatcher errorListener, long wakeFrequency, long timeout,</span> |
| <span class="source-line-no">053</span><span id="line-53"> LogRollBackupSubprocedurePool taskManager, byte[] data) {</span> |
| <span class="source-line-no">054</span><span id="line-54"> super(member, LogRollMasterProcedureManager.ROLLLOG_PROCEDURE_NAME, errorListener,</span> |
| <span class="source-line-no">055</span><span id="line-55"> wakeFrequency, timeout);</span> |
| <span class="source-line-no">056</span><span id="line-56"> LOG.info("Constructing a LogRollBackupSubprocedure.");</span> |
| <span class="source-line-no">057</span><span id="line-57"> this.rss = rss;</span> |
| <span class="source-line-no">058</span><span id="line-58"> this.taskManager = taskManager;</span> |
| <span class="source-line-no">059</span><span id="line-59"> if (data != null) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> backupRoot = new String(data, StandardCharsets.UTF_8);</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> /**</span> |
| <span class="source-line-no">065</span><span id="line-65"> * Callable task. TODO. We don't need a thread pool to execute roll log. This can be simplified</span> |
| <span class="source-line-no">066</span><span id="line-66"> * with no use of sub-procedure pool.</span> |
| <span class="source-line-no">067</span><span id="line-67"> */</span> |
| <span class="source-line-no">068</span><span id="line-68"> class RSRollLogTask implements Callable<Void> {</span> |
| <span class="source-line-no">069</span><span id="line-69"> RSRollLogTask() {</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> @Override</span> |
| <span class="source-line-no">073</span><span id="line-73"> public Void call() throws Exception {</span> |
| <span class="source-line-no">074</span><span id="line-74"> if (LOG.isDebugEnabled()) {</span> |
| <span class="source-line-no">075</span><span id="line-75"> LOG.debug("DRPC started: " + rss.getServerName());</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> AbstractFSWAL<?> fsWAL = (AbstractFSWAL<?>) rss.getWAL(null);</span> |
| <span class="source-line-no">079</span><span id="line-79"> long filenum = fsWAL.getFilenum();</span> |
| <span class="source-line-no">080</span><span id="line-80"> List<WAL> wals = rss.getWALs();</span> |
| <span class="source-line-no">081</span><span id="line-81"> long highest = -1;</span> |
| <span class="source-line-no">082</span><span id="line-82"> for (WAL wal : wals) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> if (wal == null) {</span> |
| <span class="source-line-no">084</span><span id="line-84"> continue;</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> if (((AbstractFSWAL<?>) wal).getFilenum() > highest) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> highest = ((AbstractFSWAL<?>) wal).getFilenum();</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> LOG.info("Trying to roll log in backup subprocedure, current log number: " + filenum</span> |
| <span class="source-line-no">093</span><span id="line-93"> + " highest: " + highest + " on " + rss.getServerName());</span> |
| <span class="source-line-no">094</span><span id="line-94"> ((HRegionServer) rss).getWalRoller().requestRollAll();</span> |
| <span class="source-line-no">095</span><span id="line-95"> long start = EnvironmentEdgeManager.currentTime();</span> |
| <span class="source-line-no">096</span><span id="line-96"> while (!((HRegionServer) rss).getWalRoller().walRollFinished()) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> Thread.sleep(20);</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"> LOG.debug("log roll took " + (EnvironmentEdgeManager.currentTime() - start));</span> |
| <span class="source-line-no">100</span><span id="line-100"> LOG.info("After roll log in backup subprocedure, current log number: " + fsWAL.getFilenum()</span> |
| <span class="source-line-no">101</span><span id="line-101"> + " on " + rss.getServerName());</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> Connection connection = rss.getConnection();</span> |
| <span class="source-line-no">104</span><span id="line-104"> try (final BackupSystemTable table = new BackupSystemTable(connection)) {</span> |
| <span class="source-line-no">105</span><span id="line-105"> // sanity check, good for testing</span> |
| <span class="source-line-no">106</span><span id="line-106"> HashMap<String, Long> serverTimestampMap =</span> |
| <span class="source-line-no">107</span><span id="line-107"> table.readRegionServerLastLogRollResult(backupRoot);</span> |
| <span class="source-line-no">108</span><span id="line-108"> String host = rss.getServerName().getHostname();</span> |
| <span class="source-line-no">109</span><span id="line-109"> int port = rss.getServerName().getPort();</span> |
| <span class="source-line-no">110</span><span id="line-110"> String server = host + ":" + port;</span> |
| <span class="source-line-no">111</span><span id="line-111"> Long sts = serverTimestampMap.get(host);</span> |
| <span class="source-line-no">112</span><span id="line-112"> if (sts != null && sts > highest) {</span> |
| <span class="source-line-no">113</span><span id="line-113"> LOG</span> |
| <span class="source-line-no">114</span><span id="line-114"> .warn("Won't update server's last roll log result: current=" + sts + " new=" + highest);</span> |
| <span class="source-line-no">115</span><span id="line-115"> return null;</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"> // write the log number to backup system table.</span> |
| <span class="source-line-no">118</span><span id="line-118"> table.writeRegionServerLastLogRollResult(server, highest, backupRoot);</span> |
| <span class="source-line-no">119</span><span id="line-119"> return null;</span> |
| <span class="source-line-no">120</span><span id="line-120"> } catch (Exception e) {</span> |
| <span class="source-line-no">121</span><span id="line-121"> LOG.error(e.toString(), e);</span> |
| <span class="source-line-no">122</span><span id="line-122"> throw e;</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> }</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> private void rolllog() throws ForeignException {</span> |
| <span class="source-line-no">128</span><span id="line-128"> monitor.rethrowException();</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> taskManager.submitTask(new RSRollLogTask());</span> |
| <span class="source-line-no">131</span><span id="line-131"> monitor.rethrowException();</span> |
| <span class="source-line-no">132</span><span id="line-132"></span> |
| <span class="source-line-no">133</span><span id="line-133"> // wait for everything to complete.</span> |
| <span class="source-line-no">134</span><span id="line-134"> taskManager.waitForOutstandingTasks();</span> |
| <span class="source-line-no">135</span><span id="line-135"> monitor.rethrowException();</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> @Override</span> |
| <span class="source-line-no">139</span><span id="line-139"> public void acquireBarrier() {</span> |
| <span class="source-line-no">140</span><span id="line-140"> // do nothing, executing in inside barrier step.</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> /**</span> |
| <span class="source-line-no">144</span><span id="line-144"> * do a log roll.</span> |
| <span class="source-line-no">145</span><span id="line-145"> * @return some bytes</span> |
| <span class="source-line-no">146</span><span id="line-146"> */</span> |
| <span class="source-line-no">147</span><span id="line-147"> @Override</span> |
| <span class="source-line-no">148</span><span id="line-148"> public byte[] insideBarrier() throws ForeignException {</span> |
| <span class="source-line-no">149</span><span id="line-149"> rolllog();</span> |
| <span class="source-line-no">150</span><span id="line-150"> return null;</span> |
| <span class="source-line-no">151</span><span id="line-151"> }</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> /**</span> |
| <span class="source-line-no">154</span><span id="line-154"> * Cancel threads if they haven't finished.</span> |
| <span class="source-line-no">155</span><span id="line-155"> */</span> |
| <span class="source-line-no">156</span><span id="line-156"> @Override</span> |
| <span class="source-line-no">157</span><span id="line-157"> public void cleanup(Exception e) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> taskManager.abort("Aborting log roll subprocedure tasks for backup due to error", e);</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</span> |
| <span class="source-line-no">160</span><span id="line-160"></span> |
| <span class="source-line-no">161</span><span id="line-161"> /**</span> |
| <span class="source-line-no">162</span><span id="line-162"> * Hooray!</span> |
| <span class="source-line-no">163</span><span id="line-163"> */</span> |
| <span class="source-line-no">164</span><span id="line-164"> public void releaseBarrier() {</span> |
| <span class="source-line-no">165</span><span id="line-165"> // NO OP</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</span> |
| <span class="source-line-no">167</span><span id="line-167">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
