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<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.impl;</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.io.Closeable;</span>
<span class="source-line-no">021</span><span id="line-21">import java.io.IOException;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.ArrayList;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.HashMap;</span>
<span class="source-line-no">024</span><span id="line-24">import java.util.List;</span>
<span class="source-line-no">025</span><span id="line-25">import java.util.Map;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.Set;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HConstants;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.backup.BackupHFileCleaner;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.backup.BackupInfo;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.backup.BackupInfo.BackupState;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.backup.BackupObserver;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.backup.BackupRestoreConstants;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.backup.BackupType;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.backup.master.BackupLogCleaner;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.backup.regionserver.LogRollRegionServerProcedureManager;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.Admin;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.client.Connection;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.client.TableDescriptor;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.master.cleaner.HFileCleaner;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.procedure.ProcedureManagerHost;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.util.Pair;</span>
<span class="source-line-no">047</span><span id="line-47">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">048</span><span id="line-48">import org.slf4j.Logger;</span>
<span class="source-line-no">049</span><span id="line-49">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">050</span><span id="line-50"></span>
<span class="source-line-no">051</span><span id="line-51">/**</span>
<span class="source-line-no">052</span><span id="line-52"> * Handles backup requests, creates backup info records in backup system table to keep track of</span>
<span class="source-line-no">053</span><span id="line-53"> * backup sessions, dispatches backup request.</span>
<span class="source-line-no">054</span><span id="line-54"> */</span>
<span class="source-line-no">055</span><span id="line-55">@InterfaceAudience.Private</span>
<span class="source-line-no">056</span><span id="line-56">public class BackupManager implements Closeable {</span>
<span class="source-line-no">057</span><span id="line-57"> // in seconds</span>
<span class="source-line-no">058</span><span id="line-58"> public final static String BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY =</span>
<span class="source-line-no">059</span><span id="line-59"> "hbase.backup.exclusive.op.timeout.seconds";</span>
<span class="source-line-no">060</span><span id="line-60"> // In seconds</span>
<span class="source-line-no">061</span><span id="line-61"> private final static int DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT = 3600;</span>
<span class="source-line-no">062</span><span id="line-62"> private static final Logger LOG = LoggerFactory.getLogger(BackupManager.class);</span>
<span class="source-line-no">063</span><span id="line-63"></span>
<span class="source-line-no">064</span><span id="line-64"> protected Configuration conf = null;</span>
<span class="source-line-no">065</span><span id="line-65"> protected BackupInfo backupInfo = null;</span>
<span class="source-line-no">066</span><span id="line-66"> protected BackupSystemTable systemTable;</span>
<span class="source-line-no">067</span><span id="line-67"> protected final Connection conn;</span>
<span class="source-line-no">068</span><span id="line-68"></span>
<span class="source-line-no">069</span><span id="line-69"> /**</span>
<span class="source-line-no">070</span><span id="line-70"> * Backup manager constructor.</span>
<span class="source-line-no">071</span><span id="line-71"> * @param conn connection</span>
<span class="source-line-no">072</span><span id="line-72"> * @param conf configuration</span>
<span class="source-line-no">073</span><span id="line-73"> * @throws IOException exception</span>
<span class="source-line-no">074</span><span id="line-74"> */</span>
<span class="source-line-no">075</span><span id="line-75"> public BackupManager(Connection conn, Configuration conf) throws IOException {</span>
<span class="source-line-no">076</span><span id="line-76"> if (</span>
<span class="source-line-no">077</span><span id="line-77"> !conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,</span>
<span class="source-line-no">078</span><span id="line-78"> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT)</span>
<span class="source-line-no">079</span><span id="line-79"> ) {</span>
<span class="source-line-no">080</span><span id="line-80"> throw new BackupException("HBase backup is not enabled. Check your "</span>
<span class="source-line-no">081</span><span id="line-81"> + BackupRestoreConstants.BACKUP_ENABLE_KEY + " setting.");</span>
<span class="source-line-no">082</span><span id="line-82"> }</span>
<span class="source-line-no">083</span><span id="line-83"> this.conf = conf;</span>
<span class="source-line-no">084</span><span id="line-84"> this.conn = conn;</span>
<span class="source-line-no">085</span><span id="line-85"> this.systemTable = new BackupSystemTable(conn);</span>
<span class="source-line-no">086</span><span id="line-86"> }</span>
<span class="source-line-no">087</span><span id="line-87"></span>
<span class="source-line-no">088</span><span id="line-88"> /**</span>
<span class="source-line-no">089</span><span id="line-89"> * Returns backup info</span>
<span class="source-line-no">090</span><span id="line-90"> */</span>
<span class="source-line-no">091</span><span id="line-91"> protected BackupInfo getBackupInfo() {</span>
<span class="source-line-no">092</span><span id="line-92"> return backupInfo;</span>
<span class="source-line-no">093</span><span id="line-93"> }</span>
<span class="source-line-no">094</span><span id="line-94"></span>
<span class="source-line-no">095</span><span id="line-95"> /**</span>
<span class="source-line-no">096</span><span id="line-96"> * This method modifies the master's configuration in order to inject backup-related features</span>
<span class="source-line-no">097</span><span id="line-97"> * (TESTs only)</span>
<span class="source-line-no">098</span><span id="line-98"> * @param conf configuration</span>
<span class="source-line-no">099</span><span id="line-99"> */</span>
<span class="source-line-no">100</span><span id="line-100"> public static void decorateMasterConfiguration(Configuration conf) {</span>
<span class="source-line-no">101</span><span id="line-101"> if (!isBackupEnabled(conf)) {</span>
<span class="source-line-no">102</span><span id="line-102"> return;</span>
<span class="source-line-no">103</span><span id="line-103"> }</span>
<span class="source-line-no">104</span><span id="line-104"> // Add WAL archive cleaner plug-in</span>
<span class="source-line-no">105</span><span id="line-105"> String plugins = conf.get(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS);</span>
<span class="source-line-no">106</span><span id="line-106"> String cleanerClass = BackupLogCleaner.class.getCanonicalName();</span>
<span class="source-line-no">107</span><span id="line-107"> if (!plugins.contains(cleanerClass)) {</span>
<span class="source-line-no">108</span><span id="line-108"> conf.set(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS, plugins + "," + cleanerClass);</span>
<span class="source-line-no">109</span><span id="line-109"> }</span>
<span class="source-line-no">110</span><span id="line-110"></span>
<span class="source-line-no">111</span><span id="line-111"> String classes = conf.get(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY);</span>
<span class="source-line-no">112</span><span id="line-112"> String masterProcedureClass = LogRollMasterProcedureManager.class.getName();</span>
<span class="source-line-no">113</span><span id="line-113"> if (classes == null) {</span>
<span class="source-line-no">114</span><span id="line-114"> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY, masterProcedureClass);</span>
<span class="source-line-no">115</span><span id="line-115"> } else if (!classes.contains(masterProcedureClass)) {</span>
<span class="source-line-no">116</span><span id="line-116"> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY,</span>
<span class="source-line-no">117</span><span id="line-117"> classes + "," + masterProcedureClass);</span>
<span class="source-line-no">118</span><span id="line-118"> }</span>
<span class="source-line-no">119</span><span id="line-119"></span>
<span class="source-line-no">120</span><span id="line-120"> plugins = conf.get(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS);</span>
<span class="source-line-no">121</span><span id="line-121"> conf.set(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS,</span>
<span class="source-line-no">122</span><span id="line-122"> (plugins == null ? "" : plugins + ",") + BackupHFileCleaner.class.getName());</span>
<span class="source-line-no">123</span><span id="line-123"> if (LOG.isDebugEnabled()) {</span>
<span class="source-line-no">124</span><span id="line-124"> LOG.debug(</span>
<span class="source-line-no">125</span><span id="line-125"> "Added log cleaner: {}. Added master procedure manager: {}."</span>
<span class="source-line-no">126</span><span id="line-126"> + "Added master procedure manager: {}",</span>
<span class="source-line-no">127</span><span id="line-127"> cleanerClass, masterProcedureClass, BackupHFileCleaner.class.getName());</span>
<span class="source-line-no">128</span><span id="line-128"> }</span>
<span class="source-line-no">129</span><span id="line-129"> }</span>
<span class="source-line-no">130</span><span id="line-130"></span>
<span class="source-line-no">131</span><span id="line-131"> /**</span>
<span class="source-line-no">132</span><span id="line-132"> * This method modifies the Region Server configuration in order to inject backup-related features</span>
<span class="source-line-no">133</span><span id="line-133"> * TESTs only.</span>
<span class="source-line-no">134</span><span id="line-134"> * @param conf configuration</span>
<span class="source-line-no">135</span><span id="line-135"> */</span>
<span class="source-line-no">136</span><span id="line-136"> public static void decorateRegionServerConfiguration(Configuration conf) {</span>
<span class="source-line-no">137</span><span id="line-137"> if (!isBackupEnabled(conf)) {</span>
<span class="source-line-no">138</span><span id="line-138"> return;</span>
<span class="source-line-no">139</span><span id="line-139"> }</span>
<span class="source-line-no">140</span><span id="line-140"></span>
<span class="source-line-no">141</span><span id="line-141"> String classes = conf.get(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY);</span>
<span class="source-line-no">142</span><span id="line-142"> String regionProcedureClass = LogRollRegionServerProcedureManager.class.getName();</span>
<span class="source-line-no">143</span><span id="line-143"> if (classes == null) {</span>
<span class="source-line-no">144</span><span id="line-144"> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY, regionProcedureClass);</span>
<span class="source-line-no">145</span><span id="line-145"> } else if (!classes.contains(regionProcedureClass)) {</span>
<span class="source-line-no">146</span><span id="line-146"> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY,</span>
<span class="source-line-no">147</span><span id="line-147"> classes + "," + regionProcedureClass);</span>
<span class="source-line-no">148</span><span id="line-148"> }</span>
<span class="source-line-no">149</span><span id="line-149"> String coproc = conf.get(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY);</span>
<span class="source-line-no">150</span><span id="line-150"> String regionObserverClass = BackupObserver.class.getName();</span>
<span class="source-line-no">151</span><span id="line-151"> conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,</span>
<span class="source-line-no">152</span><span id="line-152"> (coproc == null ? "" : coproc + ",") + regionObserverClass);</span>
<span class="source-line-no">153</span><span id="line-153"> if (LOG.isDebugEnabled()) {</span>
<span class="source-line-no">154</span><span id="line-154"> LOG.debug("Added region procedure manager: {}. Added region observer: {}",</span>
<span class="source-line-no">155</span><span id="line-155"> regionProcedureClass, regionObserverClass);</span>
<span class="source-line-no">156</span><span id="line-156"> }</span>
<span class="source-line-no">157</span><span id="line-157"> }</span>
<span class="source-line-no">158</span><span id="line-158"></span>
<span class="source-line-no">159</span><span id="line-159"> public static boolean isBackupEnabled(Configuration conf) {</span>
<span class="source-line-no">160</span><span id="line-160"> return conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,</span>
<span class="source-line-no">161</span><span id="line-161"> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT);</span>
<span class="source-line-no">162</span><span id="line-162"> }</span>
<span class="source-line-no">163</span><span id="line-163"></span>
<span class="source-line-no">164</span><span id="line-164"> /**</span>
<span class="source-line-no">165</span><span id="line-165"> * Get configuration</span>
<span class="source-line-no">166</span><span id="line-166"> */</span>
<span class="source-line-no">167</span><span id="line-167"> Configuration getConf() {</span>
<span class="source-line-no">168</span><span id="line-168"> return conf;</span>
<span class="source-line-no">169</span><span id="line-169"> }</span>
<span class="source-line-no">170</span><span id="line-170"></span>
<span class="source-line-no">171</span><span id="line-171"> /**</span>
<span class="source-line-no">172</span><span id="line-172"> * Stop all the work of backup.</span>
<span class="source-line-no">173</span><span id="line-173"> */</span>
<span class="source-line-no">174</span><span id="line-174"> @Override</span>
<span class="source-line-no">175</span><span id="line-175"> public void close() {</span>
<span class="source-line-no">176</span><span id="line-176"> if (systemTable != null) {</span>
<span class="source-line-no">177</span><span id="line-177"> try {</span>
<span class="source-line-no">178</span><span id="line-178"> systemTable.close();</span>
<span class="source-line-no">179</span><span id="line-179"> } catch (Exception e) {</span>
<span class="source-line-no">180</span><span id="line-180"> LOG.error(e.toString(), e);</span>
<span class="source-line-no">181</span><span id="line-181"> }</span>
<span class="source-line-no">182</span><span id="line-182"> }</span>
<span class="source-line-no">183</span><span id="line-183"> }</span>
<span class="source-line-no">184</span><span id="line-184"></span>
<span class="source-line-no">185</span><span id="line-185"> /**</span>
<span class="source-line-no">186</span><span id="line-186"> * Creates a backup info based on input backup request.</span>
<span class="source-line-no">187</span><span id="line-187"> * @param backupId backup id</span>
<span class="source-line-no">188</span><span id="line-188"> * @param type type</span>
<span class="source-line-no">189</span><span id="line-189"> * @param tableList table list</span>
<span class="source-line-no">190</span><span id="line-190"> * @param targetRootDir root dir</span>
<span class="source-line-no">191</span><span id="line-191"> * @param workers number of parallel workers</span>
<span class="source-line-no">192</span><span id="line-192"> * @param bandwidth bandwidth per worker in MB per sec</span>
<span class="source-line-no">193</span><span id="line-193"> * @throws BackupException exception</span>
<span class="source-line-no">194</span><span id="line-194"> */</span>
<span class="source-line-no">195</span><span id="line-195"> public BackupInfo createBackupInfo(String backupId, BackupType type, List&lt;TableName&gt; tableList,</span>
<span class="source-line-no">196</span><span id="line-196"> String targetRootDir, int workers, long bandwidth, boolean noChecksumVerify)</span>
<span class="source-line-no">197</span><span id="line-197"> throws BackupException {</span>
<span class="source-line-no">198</span><span id="line-198"> if (targetRootDir == null) {</span>
<span class="source-line-no">199</span><span id="line-199"> throw new BackupException("Wrong backup request parameter: target backup root directory");</span>
<span class="source-line-no">200</span><span id="line-200"> }</span>
<span class="source-line-no">201</span><span id="line-201"></span>
<span class="source-line-no">202</span><span id="line-202"> if (type == BackupType.FULL &amp;&amp; (tableList == null || tableList.isEmpty())) {</span>
<span class="source-line-no">203</span><span id="line-203"> // If table list is null for full backup, which means backup all tables. Then fill the table</span>
<span class="source-line-no">204</span><span id="line-204"> // list with all user tables from meta. It no table available, throw the request exception.</span>
<span class="source-line-no">205</span><span id="line-205"> List&lt;TableDescriptor&gt; htds = null;</span>
<span class="source-line-no">206</span><span id="line-206"> try (Admin admin = conn.getAdmin()) {</span>
<span class="source-line-no">207</span><span id="line-207"> htds = admin.listTableDescriptors();</span>
<span class="source-line-no">208</span><span id="line-208"> } catch (Exception e) {</span>
<span class="source-line-no">209</span><span id="line-209"> throw new BackupException(e);</span>
<span class="source-line-no">210</span><span id="line-210"> }</span>
<span class="source-line-no">211</span><span id="line-211"></span>
<span class="source-line-no">212</span><span id="line-212"> if (htds == null) {</span>
<span class="source-line-no">213</span><span id="line-213"> throw new BackupException("No table exists for full backup of all tables.");</span>
<span class="source-line-no">214</span><span id="line-214"> } else {</span>
<span class="source-line-no">215</span><span id="line-215"> tableList = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">216</span><span id="line-216"> for (TableDescriptor hTableDescriptor : htds) {</span>
<span class="source-line-no">217</span><span id="line-217"> TableName tn = hTableDescriptor.getTableName();</span>
<span class="source-line-no">218</span><span id="line-218"> if (tn.equals(BackupSystemTable.getTableName(conf))) {</span>
<span class="source-line-no">219</span><span id="line-219"> // skip backup system table</span>
<span class="source-line-no">220</span><span id="line-220"> continue;</span>
<span class="source-line-no">221</span><span id="line-221"> }</span>
<span class="source-line-no">222</span><span id="line-222"> tableList.add(hTableDescriptor.getTableName());</span>
<span class="source-line-no">223</span><span id="line-223"> }</span>
<span class="source-line-no">224</span><span id="line-224"></span>
<span class="source-line-no">225</span><span id="line-225"> LOG.info("Full backup all the tables available in the cluster: {}", tableList);</span>
<span class="source-line-no">226</span><span id="line-226"> }</span>
<span class="source-line-no">227</span><span id="line-227"> }</span>
<span class="source-line-no">228</span><span id="line-228"></span>
<span class="source-line-no">229</span><span id="line-229"> // there are one or more tables in the table list</span>
<span class="source-line-no">230</span><span id="line-230"> backupInfo = new BackupInfo(backupId, type, tableList.toArray(new TableName[tableList.size()]),</span>
<span class="source-line-no">231</span><span id="line-231"> targetRootDir);</span>
<span class="source-line-no">232</span><span id="line-232"> backupInfo.setBandwidth(bandwidth);</span>
<span class="source-line-no">233</span><span id="line-233"> backupInfo.setWorkers(workers);</span>
<span class="source-line-no">234</span><span id="line-234"> backupInfo.setNoChecksumVerify(noChecksumVerify);</span>
<span class="source-line-no">235</span><span id="line-235"> return backupInfo;</span>
<span class="source-line-no">236</span><span id="line-236"> }</span>
<span class="source-line-no">237</span><span id="line-237"></span>
<span class="source-line-no">238</span><span id="line-238"> /**</span>
<span class="source-line-no">239</span><span id="line-239"> * Check if any ongoing backup. Currently, we only reply on checking status in backup system</span>
<span class="source-line-no">240</span><span id="line-240"> * table. We need to consider to handle the case of orphan records in the future. Otherwise, all</span>
<span class="source-line-no">241</span><span id="line-241"> * the coming request will fail.</span>
<span class="source-line-no">242</span><span id="line-242"> * @return the ongoing backup id if on going backup exists, otherwise null</span>
<span class="source-line-no">243</span><span id="line-243"> * @throws IOException exception</span>
<span class="source-line-no">244</span><span id="line-244"> */</span>
<span class="source-line-no">245</span><span id="line-245"> private String getOngoingBackupId() throws IOException {</span>
<span class="source-line-no">246</span><span id="line-246"> ArrayList&lt;BackupInfo&gt; sessions = systemTable.getBackupInfos(BackupState.RUNNING);</span>
<span class="source-line-no">247</span><span id="line-247"> if (sessions.size() == 0) {</span>
<span class="source-line-no">248</span><span id="line-248"> return null;</span>
<span class="source-line-no">249</span><span id="line-249"> }</span>
<span class="source-line-no">250</span><span id="line-250"> return sessions.get(0).getBackupId();</span>
<span class="source-line-no">251</span><span id="line-251"> }</span>
<span class="source-line-no">252</span><span id="line-252"></span>
<span class="source-line-no">253</span><span id="line-253"> /**</span>
<span class="source-line-no">254</span><span id="line-254"> * Start the backup manager service.</span>
<span class="source-line-no">255</span><span id="line-255"> * @throws IOException exception</span>
<span class="source-line-no">256</span><span id="line-256"> */</span>
<span class="source-line-no">257</span><span id="line-257"> public void initialize() throws IOException {</span>
<span class="source-line-no">258</span><span id="line-258"> String ongoingBackupId = this.getOngoingBackupId();</span>
<span class="source-line-no">259</span><span id="line-259"> if (ongoingBackupId != null) {</span>
<span class="source-line-no">260</span><span id="line-260"> LOG.info("There is a ongoing backup {}"</span>
<span class="source-line-no">261</span><span id="line-261"> + ". Can not launch new backup until no ongoing backup remains.", ongoingBackupId);</span>
<span class="source-line-no">262</span><span id="line-262"> throw new BackupException("There is ongoing backup seesion.");</span>
<span class="source-line-no">263</span><span id="line-263"> }</span>
<span class="source-line-no">264</span><span id="line-264"> }</span>
<span class="source-line-no">265</span><span id="line-265"></span>
<span class="source-line-no">266</span><span id="line-266"> public void setBackupInfo(BackupInfo backupInfo) {</span>
<span class="source-line-no">267</span><span id="line-267"> this.backupInfo = backupInfo;</span>
<span class="source-line-no">268</span><span id="line-268"> }</span>
<span class="source-line-no">269</span><span id="line-269"></span>
<span class="source-line-no">270</span><span id="line-270"> /*</span>
<span class="source-line-no">271</span><span id="line-271"> * backup system table operations</span>
<span class="source-line-no">272</span><span id="line-272"> */</span>
<span class="source-line-no">273</span><span id="line-273"></span>
<span class="source-line-no">274</span><span id="line-274"> /**</span>
<span class="source-line-no">275</span><span id="line-275"> * Updates status (state) of a backup session in a persistent store</span>
<span class="source-line-no">276</span><span id="line-276"> * @param context context</span>
<span class="source-line-no">277</span><span id="line-277"> * @throws IOException exception</span>
<span class="source-line-no">278</span><span id="line-278"> */</span>
<span class="source-line-no">279</span><span id="line-279"> public void updateBackupInfo(BackupInfo context) throws IOException {</span>
<span class="source-line-no">280</span><span id="line-280"> systemTable.updateBackupInfo(context);</span>
<span class="source-line-no">281</span><span id="line-281"> }</span>
<span class="source-line-no">282</span><span id="line-282"></span>
<span class="source-line-no">283</span><span id="line-283"> /**</span>
<span class="source-line-no">284</span><span id="line-284"> * Starts new backup session</span>
<span class="source-line-no">285</span><span id="line-285"> * @throws IOException if active session already exists</span>
<span class="source-line-no">286</span><span id="line-286"> */</span>
<span class="source-line-no">287</span><span id="line-287"> public void startBackupSession() throws IOException {</span>
<span class="source-line-no">288</span><span id="line-288"> long startTime = EnvironmentEdgeManager.currentTime();</span>
<span class="source-line-no">289</span><span id="line-289"> long timeout = conf.getInt(BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY,</span>
<span class="source-line-no">290</span><span id="line-290"> DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT) * 1000L;</span>
<span class="source-line-no">291</span><span id="line-291"> long lastWarningOutputTime = 0;</span>
<span class="source-line-no">292</span><span id="line-292"> while (EnvironmentEdgeManager.currentTime() - startTime &lt; timeout) {</span>
<span class="source-line-no">293</span><span id="line-293"> try {</span>
<span class="source-line-no">294</span><span id="line-294"> systemTable.startBackupExclusiveOperation();</span>
<span class="source-line-no">295</span><span id="line-295"> return;</span>
<span class="source-line-no">296</span><span id="line-296"> } catch (IOException e) {</span>
<span class="source-line-no">297</span><span id="line-297"> if (e instanceof ExclusiveOperationException) {</span>
<span class="source-line-no">298</span><span id="line-298"> // sleep, then repeat</span>
<span class="source-line-no">299</span><span id="line-299"> try {</span>
<span class="source-line-no">300</span><span id="line-300"> Thread.sleep(1000);</span>
<span class="source-line-no">301</span><span id="line-301"> } catch (InterruptedException e1) {</span>
<span class="source-line-no">302</span><span id="line-302"> // Restore the interrupted status</span>
<span class="source-line-no">303</span><span id="line-303"> Thread.currentThread().interrupt();</span>
<span class="source-line-no">304</span><span id="line-304"> }</span>
<span class="source-line-no">305</span><span id="line-305"> if (</span>
<span class="source-line-no">306</span><span id="line-306"> lastWarningOutputTime == 0</span>
<span class="source-line-no">307</span><span id="line-307"> || (EnvironmentEdgeManager.currentTime() - lastWarningOutputTime) &gt; 60000</span>
<span class="source-line-no">308</span><span id="line-308"> ) {</span>
<span class="source-line-no">309</span><span id="line-309"> lastWarningOutputTime = EnvironmentEdgeManager.currentTime();</span>
<span class="source-line-no">310</span><span id="line-310"> LOG.warn("Waiting to acquire backup exclusive lock for {}s",</span>
<span class="source-line-no">311</span><span id="line-311"> +(lastWarningOutputTime - startTime) / 1000);</span>
<span class="source-line-no">312</span><span id="line-312"> }</span>
<span class="source-line-no">313</span><span id="line-313"> } else {</span>
<span class="source-line-no">314</span><span id="line-314"> throw e;</span>
<span class="source-line-no">315</span><span id="line-315"> }</span>
<span class="source-line-no">316</span><span id="line-316"> }</span>
<span class="source-line-no">317</span><span id="line-317"> }</span>
<span class="source-line-no">318</span><span id="line-318"> throw new IOException(</span>
<span class="source-line-no">319</span><span id="line-319"> "Failed to acquire backup system table exclusive lock after " + timeout / 1000 + "s");</span>
<span class="source-line-no">320</span><span id="line-320"> }</span>
<span class="source-line-no">321</span><span id="line-321"></span>
<span class="source-line-no">322</span><span id="line-322"> /**</span>
<span class="source-line-no">323</span><span id="line-323"> * Finishes active backup session</span>
<span class="source-line-no">324</span><span id="line-324"> * @throws IOException if no active session</span>
<span class="source-line-no">325</span><span id="line-325"> */</span>
<span class="source-line-no">326</span><span id="line-326"> public void finishBackupSession() throws IOException {</span>
<span class="source-line-no">327</span><span id="line-327"> systemTable.finishBackupExclusiveOperation();</span>
<span class="source-line-no">328</span><span id="line-328"> }</span>
<span class="source-line-no">329</span><span id="line-329"></span>
<span class="source-line-no">330</span><span id="line-330"> /**</span>
<span class="source-line-no">331</span><span id="line-331"> * Read the last backup start code (timestamp) of last successful backup. Will return null if</span>
<span class="source-line-no">332</span><span id="line-332"> * there is no startcode stored in backup system table or the value is of length 0. These two</span>
<span class="source-line-no">333</span><span id="line-333"> * cases indicate there is no successful backup completed so far.</span>
<span class="source-line-no">334</span><span id="line-334"> * @return the timestamp of a last successful backup</span>
<span class="source-line-no">335</span><span id="line-335"> * @throws IOException exception</span>
<span class="source-line-no">336</span><span id="line-336"> */</span>
<span class="source-line-no">337</span><span id="line-337"> public String readBackupStartCode() throws IOException {</span>
<span class="source-line-no">338</span><span id="line-338"> return systemTable.readBackupStartCode(backupInfo.getBackupRootDir());</span>
<span class="source-line-no">339</span><span id="line-339"> }</span>
<span class="source-line-no">340</span><span id="line-340"></span>
<span class="source-line-no">341</span><span id="line-341"> /**</span>
<span class="source-line-no">342</span><span id="line-342"> * Write the start code (timestamp) to backup system table. If passed in null, then write 0 byte.</span>
<span class="source-line-no">343</span><span id="line-343"> * @param startCode start code</span>
<span class="source-line-no">344</span><span id="line-344"> * @throws IOException exception</span>
<span class="source-line-no">345</span><span id="line-345"> */</span>
<span class="source-line-no">346</span><span id="line-346"> public void writeBackupStartCode(Long startCode) throws IOException {</span>
<span class="source-line-no">347</span><span id="line-347"> systemTable.writeBackupStartCode(startCode, backupInfo.getBackupRootDir());</span>
<span class="source-line-no">348</span><span id="line-348"> }</span>
<span class="source-line-no">349</span><span id="line-349"></span>
<span class="source-line-no">350</span><span id="line-350"> /**</span>
<span class="source-line-no">351</span><span id="line-351"> * Get the RS log information after the last log roll from backup system table.</span>
<span class="source-line-no">352</span><span id="line-352"> * @return RS log info</span>
<span class="source-line-no">353</span><span id="line-353"> * @throws IOException exception</span>
<span class="source-line-no">354</span><span id="line-354"> */</span>
<span class="source-line-no">355</span><span id="line-355"> public HashMap&lt;String, Long&gt; readRegionServerLastLogRollResult() throws IOException {</span>
<span class="source-line-no">356</span><span id="line-356"> return systemTable.readRegionServerLastLogRollResult(backupInfo.getBackupRootDir());</span>
<span class="source-line-no">357</span><span id="line-357"> }</span>
<span class="source-line-no">358</span><span id="line-358"></span>
<span class="source-line-no">359</span><span id="line-359"> public Pair&lt;Map&lt;TableName, Map&lt;String, Map&lt;String, List&lt;Pair&lt;String, Boolean&gt;&gt;&gt;&gt;&gt;, List&lt;byte[]&gt;&gt;</span>
<span class="source-line-no">360</span><span id="line-360"> readBulkloadRows(List&lt;TableName&gt; tableList) throws IOException {</span>
<span class="source-line-no">361</span><span id="line-361"> return systemTable.readBulkloadRows(tableList);</span>
<span class="source-line-no">362</span><span id="line-362"> }</span>
<span class="source-line-no">363</span><span id="line-363"></span>
<span class="source-line-no">364</span><span id="line-364"> public void deleteBulkLoadedRows(List&lt;byte[]&gt; rows) throws IOException {</span>
<span class="source-line-no">365</span><span id="line-365"> systemTable.deleteBulkLoadedRows(rows);</span>
<span class="source-line-no">366</span><span id="line-366"> }</span>
<span class="source-line-no">367</span><span id="line-367"></span>
<span class="source-line-no">368</span><span id="line-368"> /**</span>
<span class="source-line-no">369</span><span id="line-369"> * Get all completed backup information (in desc order by time)</span>
<span class="source-line-no">370</span><span id="line-370"> * @return history info of BackupCompleteData</span>
<span class="source-line-no">371</span><span id="line-371"> * @throws IOException exception</span>
<span class="source-line-no">372</span><span id="line-372"> */</span>
<span class="source-line-no">373</span><span id="line-373"> public List&lt;BackupInfo&gt; getBackupHistory() throws IOException {</span>
<span class="source-line-no">374</span><span id="line-374"> return systemTable.getBackupHistory();</span>
<span class="source-line-no">375</span><span id="line-375"> }</span>
<span class="source-line-no">376</span><span id="line-376"></span>
<span class="source-line-no">377</span><span id="line-377"> public ArrayList&lt;BackupInfo&gt; getBackupHistory(boolean completed) throws IOException {</span>
<span class="source-line-no">378</span><span id="line-378"> return systemTable.getBackupHistory(completed);</span>
<span class="source-line-no">379</span><span id="line-379"> }</span>
<span class="source-line-no">380</span><span id="line-380"></span>
<span class="source-line-no">381</span><span id="line-381"> /**</span>
<span class="source-line-no">382</span><span id="line-382"> * Write the current timestamps for each regionserver to backup system table after a successful</span>
<span class="source-line-no">383</span><span id="line-383"> * full or incremental backup. Each table may have a different set of log timestamps. The saved</span>
<span class="source-line-no">384</span><span id="line-384"> * timestamp is of the last log file that was backed up already.</span>
<span class="source-line-no">385</span><span id="line-385"> * @param tables tables</span>
<span class="source-line-no">386</span><span id="line-386"> * @throws IOException exception</span>
<span class="source-line-no">387</span><span id="line-387"> */</span>
<span class="source-line-no">388</span><span id="line-388"> public void writeRegionServerLogTimestamp(Set&lt;TableName&gt; tables, Map&lt;String, Long&gt; newTimestamps)</span>
<span class="source-line-no">389</span><span id="line-389"> throws IOException {</span>
<span class="source-line-no">390</span><span id="line-390"> systemTable.writeRegionServerLogTimestamp(tables, newTimestamps, backupInfo.getBackupRootDir());</span>
<span class="source-line-no">391</span><span id="line-391"> }</span>
<span class="source-line-no">392</span><span id="line-392"></span>
<span class="source-line-no">393</span><span id="line-393"> /**</span>
<span class="source-line-no">394</span><span id="line-394"> * Read the timestamp for each region server log after the last successful backup. Each table has</span>
<span class="source-line-no">395</span><span id="line-395"> * its own set of the timestamps.</span>
<span class="source-line-no">396</span><span id="line-396"> * @return the timestamp for each region server. key: tableName value:</span>
<span class="source-line-no">397</span><span id="line-397"> * RegionServer,PreviousTimeStamp</span>
<span class="source-line-no">398</span><span id="line-398"> * @throws IOException exception</span>
<span class="source-line-no">399</span><span id="line-399"> */</span>
<span class="source-line-no">400</span><span id="line-400"> public Map&lt;TableName, Map&lt;String, Long&gt;&gt; readLogTimestampMap() throws IOException {</span>
<span class="source-line-no">401</span><span id="line-401"> return systemTable.readLogTimestampMap(backupInfo.getBackupRootDir());</span>
<span class="source-line-no">402</span><span id="line-402"> }</span>
<span class="source-line-no">403</span><span id="line-403"></span>
<span class="source-line-no">404</span><span id="line-404"> /**</span>
<span class="source-line-no">405</span><span id="line-405"> * Return the current tables covered by incremental backup.</span>
<span class="source-line-no">406</span><span id="line-406"> * @return set of tableNames</span>
<span class="source-line-no">407</span><span id="line-407"> * @throws IOException exception</span>
<span class="source-line-no">408</span><span id="line-408"> */</span>
<span class="source-line-no">409</span><span id="line-409"> public Set&lt;TableName&gt; getIncrementalBackupTableSet() throws IOException {</span>
<span class="source-line-no">410</span><span id="line-410"> return systemTable.getIncrementalBackupTableSet(backupInfo.getBackupRootDir());</span>
<span class="source-line-no">411</span><span id="line-411"> }</span>
<span class="source-line-no">412</span><span id="line-412"></span>
<span class="source-line-no">413</span><span id="line-413"> /**</span>
<span class="source-line-no">414</span><span id="line-414"> * Adds set of tables to overall incremental backup table set</span>
<span class="source-line-no">415</span><span id="line-415"> * @param tables tables</span>
<span class="source-line-no">416</span><span id="line-416"> * @throws IOException exception</span>
<span class="source-line-no">417</span><span id="line-417"> */</span>
<span class="source-line-no">418</span><span id="line-418"> public void addIncrementalBackupTableSet(Set&lt;TableName&gt; tables) throws IOException {</span>
<span class="source-line-no">419</span><span id="line-419"> systemTable.addIncrementalBackupTableSet(tables, backupInfo.getBackupRootDir());</span>
<span class="source-line-no">420</span><span id="line-420"> }</span>
<span class="source-line-no">421</span><span id="line-421"></span>
<span class="source-line-no">422</span><span id="line-422"> public Connection getConnection() {</span>
<span class="source-line-no">423</span><span id="line-423"> return conn;</span>
<span class="source-line-no">424</span><span id="line-424"> }</span>
<span class="source-line-no">425</span><span id="line-425">}</span>
</pre>
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