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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.mapreduce;</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.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.lang.reflect.Field;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.lang.reflect.InvocationTargetException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.lang.reflect.Method;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.math.BigDecimal;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.Arrays;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.List;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.Objects;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.fs.FileStatus;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.backup.BackupCopyJob;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.backup.BackupInfo;</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.impl.BackupManager;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.backup.util.BackupUtils;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.snapshot.ExportSnapshot;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.io.SequenceFile;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.io.Text;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.mapreduce.Cluster;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.mapreduce.Counters;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.mapreduce.Job;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.mapreduce.JobID;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.tools.CopyListingFileStatus;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.tools.DistCp;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.tools.DistCpConstants;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.tools.DistCpOptions;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.slf4j.Logger;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53">/**</span> |
| <span class="source-line-no">054</span><span id="line-54"> * Map-Reduce implementation of {@link BackupCopyJob}. Basically, there are 2 types of copy</span> |
| <span class="source-line-no">055</span><span id="line-55"> * operation: one is copying from snapshot, which bases on extending ExportSnapshot's function, the</span> |
| <span class="source-line-no">056</span><span id="line-56"> * other is copying for incremental log files, which bases on extending DistCp's function.</span> |
| <span class="source-line-no">057</span><span id="line-57"> */</span> |
| <span class="source-line-no">058</span><span id="line-58">@InterfaceAudience.Private</span> |
| <span class="source-line-no">059</span><span id="line-59">public class MapReduceBackupCopyJob implements BackupCopyJob {</span> |
| <span class="source-line-no">060</span><span id="line-60"> public static final String NUMBER_OF_LEVELS_TO_PRESERVE_KEY = "num.levels.preserve";</span> |
| <span class="source-line-no">061</span><span id="line-61"> private static final Logger LOG = LoggerFactory.getLogger(MapReduceBackupCopyJob.class);</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> private Configuration conf;</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> // Accumulated progress within the whole backup process for the copy operation</span> |
| <span class="source-line-no">066</span><span id="line-66"> private float progressDone = 0.1f;</span> |
| <span class="source-line-no">067</span><span id="line-67"> private long bytesCopied = 0;</span> |
| <span class="source-line-no">068</span><span id="line-68"> private static float INIT_PROGRESS = 0.1f;</span> |
| <span class="source-line-no">069</span><span id="line-69"></span> |
| <span class="source-line-no">070</span><span id="line-70"> // The percentage of the current copy task within the whole task if multiple time copies are</span> |
| <span class="source-line-no">071</span><span id="line-71"> // needed. The default value is 100%, which means only 1 copy task for the whole.</span> |
| <span class="source-line-no">072</span><span id="line-72"> private float subTaskPercntgInWholeTask = 1f;</span> |
| <span class="source-line-no">073</span><span id="line-73"></span> |
| <span class="source-line-no">074</span><span id="line-74"> public MapReduceBackupCopyJob() {</span> |
| <span class="source-line-no">075</span><span id="line-75"> }</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> @Override</span> |
| <span class="source-line-no">078</span><span id="line-78"> public Configuration getConf() {</span> |
| <span class="source-line-no">079</span><span id="line-79"> return conf;</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> @Override</span> |
| <span class="source-line-no">083</span><span id="line-83"> public void setConf(Configuration conf) {</span> |
| <span class="source-line-no">084</span><span id="line-84"> this.conf = conf;</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"> /**</span> |
| <span class="source-line-no">088</span><span id="line-88"> * Get the current copy task percentage within the whole task if multiple copies are needed.</span> |
| <span class="source-line-no">089</span><span id="line-89"> * @return the current copy task percentage</span> |
| <span class="source-line-no">090</span><span id="line-90"> */</span> |
| <span class="source-line-no">091</span><span id="line-91"> public float getSubTaskPercntgInWholeTask() {</span> |
| <span class="source-line-no">092</span><span id="line-92"> return subTaskPercntgInWholeTask;</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"> * Set the current copy task percentage within the whole task if multiple copies are needed. Must</span> |
| <span class="source-line-no">097</span><span id="line-97"> * be called before calling</span> |
| <span class="source-line-no">098</span><span id="line-98"> * {@link #copy(BackupInfo, BackupManager, Configuration, BackupType, String[])}</span> |
| <span class="source-line-no">099</span><span id="line-99"> * @param subTaskPercntgInWholeTask The percentage of the copy subtask</span> |
| <span class="source-line-no">100</span><span id="line-100"> */</span> |
| <span class="source-line-no">101</span><span id="line-101"> public void setSubTaskPercntgInWholeTask(float subTaskPercntgInWholeTask) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> this.subTaskPercntgInWholeTask = subTaskPercntgInWholeTask;</span> |
| <span class="source-line-no">103</span><span id="line-103"> }</span> |
| <span class="source-line-no">104</span><span id="line-104"></span> |
| <span class="source-line-no">105</span><span id="line-105"> static class SnapshotCopy extends ExportSnapshot {</span> |
| <span class="source-line-no">106</span><span id="line-106"> private BackupInfo backupInfo;</span> |
| <span class="source-line-no">107</span><span id="line-107"> private TableName table;</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> public SnapshotCopy(BackupInfo backupInfo, TableName table) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> super();</span> |
| <span class="source-line-no">111</span><span id="line-111"> this.backupInfo = backupInfo;</span> |
| <span class="source-line-no">112</span><span id="line-112"> this.table = table;</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"></span> |
| <span class="source-line-no">115</span><span id="line-115"> public TableName getTable() {</span> |
| <span class="source-line-no">116</span><span id="line-116"> return this.table;</span> |
| <span class="source-line-no">117</span><span id="line-117"> }</span> |
| <span class="source-line-no">118</span><span id="line-118"></span> |
| <span class="source-line-no">119</span><span id="line-119"> public BackupInfo getBackupInfo() {</span> |
| <span class="source-line-no">120</span><span id="line-120"> return this.backupInfo;</span> |
| <span class="source-line-no">121</span><span id="line-121"> }</span> |
| <span class="source-line-no">122</span><span id="line-122"> }</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"> * Update the ongoing backup with new progress.</span> |
| <span class="source-line-no">126</span><span id="line-126"> * @param backupInfo backup info</span> |
| <span class="source-line-no">127</span><span id="line-127"> * @param newProgress progress</span> |
| <span class="source-line-no">128</span><span id="line-128"> * @param bytesCopied bytes copied</span> |
| <span class="source-line-no">129</span><span id="line-129"> * @throws IOException exception</span> |
| <span class="source-line-no">130</span><span id="line-130"> */</span> |
| <span class="source-line-no">131</span><span id="line-131"> static void updateProgress(BackupInfo backupInfo, BackupManager backupManager, int newProgress,</span> |
| <span class="source-line-no">132</span><span id="line-132"> long bytesCopied) throws IOException {</span> |
| <span class="source-line-no">133</span><span id="line-133"> // compose the new backup progress data, using fake number for now</span> |
| <span class="source-line-no">134</span><span id="line-134"> String backupProgressData = newProgress + "%";</span> |
| <span class="source-line-no">135</span><span id="line-135"></span> |
| <span class="source-line-no">136</span><span id="line-136"> backupInfo.setProgress(newProgress);</span> |
| <span class="source-line-no">137</span><span id="line-137"> backupManager.updateBackupInfo(backupInfo);</span> |
| <span class="source-line-no">138</span><span id="line-138"> LOG.debug("Backup progress data \"" + backupProgressData</span> |
| <span class="source-line-no">139</span><span id="line-139"> + "\" has been updated to backup system table for " + backupInfo.getBackupId());</span> |
| <span class="source-line-no">140</span><span id="line-140"> }</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"> * Extends DistCp for progress updating to backup system table during backup. Using DistCpV2</span> |
| <span class="source-line-no">144</span><span id="line-144"> * (MAPREDUCE-2765). Simply extend it and override execute() method to get the Job reference for</span> |
| <span class="source-line-no">145</span><span id="line-145"> * progress updating. Only the argument "src1, [src2, [...]] dst" is supported, no more DistCp</span> |
| <span class="source-line-no">146</span><span id="line-146"> * options.</span> |
| <span class="source-line-no">147</span><span id="line-147"> */</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> class BackupDistCp extends DistCp {</span> |
| <span class="source-line-no">150</span><span id="line-150"></span> |
| <span class="source-line-no">151</span><span id="line-151"> private BackupInfo backupInfo;</span> |
| <span class="source-line-no">152</span><span id="line-152"> private BackupManager backupManager;</span> |
| <span class="source-line-no">153</span><span id="line-153"></span> |
| <span class="source-line-no">154</span><span id="line-154"> public BackupDistCp(Configuration conf, DistCpOptions options, BackupInfo backupInfo,</span> |
| <span class="source-line-no">155</span><span id="line-155"> BackupManager backupManager) throws Exception {</span> |
| <span class="source-line-no">156</span><span id="line-156"> super(conf, options);</span> |
| <span class="source-line-no">157</span><span id="line-157"> this.backupInfo = backupInfo;</span> |
| <span class="source-line-no">158</span><span id="line-158"> this.backupManager = backupManager;</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"> @Override</span> |
| <span class="source-line-no">162</span><span id="line-162"> public Job execute() throws Exception {</span> |
| <span class="source-line-no">163</span><span id="line-163"></span> |
| <span class="source-line-no">164</span><span id="line-164"> // reflection preparation for private methods and fields</span> |
| <span class="source-line-no">165</span><span id="line-165"> Class<?> classDistCp = org.apache.hadoop.tools.DistCp.class;</span> |
| <span class="source-line-no">166</span><span id="line-166"> Method methodCleanup = classDistCp.getDeclaredMethod("cleanup");</span> |
| <span class="source-line-no">167</span><span id="line-167"></span> |
| <span class="source-line-no">168</span><span id="line-168"> Field fieldInputOptions = getInputOptionsField(classDistCp);</span> |
| <span class="source-line-no">169</span><span id="line-169"> Field fieldSubmitted = classDistCp.getDeclaredField("submitted");</span> |
| <span class="source-line-no">170</span><span id="line-170"></span> |
| <span class="source-line-no">171</span><span id="line-171"> methodCleanup.setAccessible(true);</span> |
| <span class="source-line-no">172</span><span id="line-172"> fieldInputOptions.setAccessible(true);</span> |
| <span class="source-line-no">173</span><span id="line-173"> fieldSubmitted.setAccessible(true);</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> // execute() logic starts here</span> |
| <span class="source-line-no">176</span><span id="line-176"> assert fieldInputOptions.get(this) != null;</span> |
| <span class="source-line-no">177</span><span id="line-177"></span> |
| <span class="source-line-no">178</span><span id="line-178"> Job job = null;</span> |
| <span class="source-line-no">179</span><span id="line-179"> try {</span> |
| <span class="source-line-no">180</span><span id="line-180"></span> |
| <span class="source-line-no">181</span><span id="line-181"> List<Path> srcs = getSourcePaths(fieldInputOptions);</span> |
| <span class="source-line-no">182</span><span id="line-182"></span> |
| <span class="source-line-no">183</span><span id="line-183"> long totalSrcLgth = 0;</span> |
| <span class="source-line-no">184</span><span id="line-184"> for (Path aSrc : srcs) {</span> |
| <span class="source-line-no">185</span><span id="line-185"> totalSrcLgth += BackupUtils.getFilesLength(aSrc.getFileSystem(super.getConf()), aSrc);</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"></span> |
| <span class="source-line-no">188</span><span id="line-188"> // Async call</span> |
| <span class="source-line-no">189</span><span id="line-189"> job = super.execute();</span> |
| <span class="source-line-no">190</span><span id="line-190"> // Update the copy progress to system table every 0.5s if progress value changed</span> |
| <span class="source-line-no">191</span><span id="line-191"> int progressReportFreq = MapReduceBackupCopyJob.this.getConf()</span> |
| <span class="source-line-no">192</span><span id="line-192"> .getInt("hbase.backup.progressreport.frequency", 500);</span> |
| <span class="source-line-no">193</span><span id="line-193"> float lastProgress = progressDone;</span> |
| <span class="source-line-no">194</span><span id="line-194"> while (!job.isComplete()) {</span> |
| <span class="source-line-no">195</span><span id="line-195"> float newProgress =</span> |
| <span class="source-line-no">196</span><span id="line-196"> progressDone + job.mapProgress() * subTaskPercntgInWholeTask * (1 - INIT_PROGRESS);</span> |
| <span class="source-line-no">197</span><span id="line-197"></span> |
| <span class="source-line-no">198</span><span id="line-198"> if (newProgress > lastProgress) {</span> |
| <span class="source-line-no">199</span><span id="line-199"></span> |
| <span class="source-line-no">200</span><span id="line-200"> BigDecimal progressData =</span> |
| <span class="source-line-no">201</span><span id="line-201"> new BigDecimal(newProgress * 100).setScale(1, BigDecimal.ROUND_HALF_UP);</span> |
| <span class="source-line-no">202</span><span id="line-202"> String newProgressStr = progressData + "%";</span> |
| <span class="source-line-no">203</span><span id="line-203"> LOG.info("Progress: " + newProgressStr);</span> |
| <span class="source-line-no">204</span><span id="line-204"> updateProgress(backupInfo, backupManager, progressData.intValue(), bytesCopied);</span> |
| <span class="source-line-no">205</span><span id="line-205"> LOG.debug("Backup progress data updated to backup system table: \"Progress: "</span> |
| <span class="source-line-no">206</span><span id="line-206"> + newProgressStr + ".\"");</span> |
| <span class="source-line-no">207</span><span id="line-207"> lastProgress = newProgress;</span> |
| <span class="source-line-no">208</span><span id="line-208"> }</span> |
| <span class="source-line-no">209</span><span id="line-209"> Thread.sleep(progressReportFreq);</span> |
| <span class="source-line-no">210</span><span id="line-210"> }</span> |
| <span class="source-line-no">211</span><span id="line-211"> // update the progress data after copy job complete</span> |
| <span class="source-line-no">212</span><span id="line-212"> float newProgress =</span> |
| <span class="source-line-no">213</span><span id="line-213"> progressDone + job.mapProgress() * subTaskPercntgInWholeTask * (1 - INIT_PROGRESS);</span> |
| <span class="source-line-no">214</span><span id="line-214"> BigDecimal progressData =</span> |
| <span class="source-line-no">215</span><span id="line-215"> new BigDecimal(newProgress * 100).setScale(1, BigDecimal.ROUND_HALF_UP);</span> |
| <span class="source-line-no">216</span><span id="line-216"></span> |
| <span class="source-line-no">217</span><span id="line-217"> String newProgressStr = progressData + "%";</span> |
| <span class="source-line-no">218</span><span id="line-218"> LOG.info("Progress: " + newProgressStr + " subTask: " + subTaskPercntgInWholeTask</span> |
| <span class="source-line-no">219</span><span id="line-219"> + " mapProgress: " + job.mapProgress());</span> |
| <span class="source-line-no">220</span><span id="line-220"></span> |
| <span class="source-line-no">221</span><span id="line-221"> // accumulate the overall backup progress</span> |
| <span class="source-line-no">222</span><span id="line-222"> progressDone = newProgress;</span> |
| <span class="source-line-no">223</span><span id="line-223"> bytesCopied += totalSrcLgth;</span> |
| <span class="source-line-no">224</span><span id="line-224"></span> |
| <span class="source-line-no">225</span><span id="line-225"> updateProgress(backupInfo, backupManager, progressData.intValue(), bytesCopied);</span> |
| <span class="source-line-no">226</span><span id="line-226"> LOG.debug("Backup progress data updated to backup system table: \"Progress: "</span> |
| <span class="source-line-no">227</span><span id="line-227"> + newProgressStr + " - " + bytesCopied + " bytes copied.\"");</span> |
| <span class="source-line-no">228</span><span id="line-228"> } catch (Throwable t) {</span> |
| <span class="source-line-no">229</span><span id="line-229"> LOG.error(t.toString(), t);</span> |
| <span class="source-line-no">230</span><span id="line-230"> throw t;</span> |
| <span class="source-line-no">231</span><span id="line-231"> }</span> |
| <span class="source-line-no">232</span><span id="line-232"></span> |
| <span class="source-line-no">233</span><span id="line-233"> String jobID = job.getJobID().toString();</span> |
| <span class="source-line-no">234</span><span id="line-234"> job.getConfiguration().set(DistCpConstants.CONF_LABEL_DISTCP_JOB_ID, jobID);</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> LOG.debug(</span> |
| <span class="source-line-no">237</span><span id="line-237"> "DistCp job-id: " + jobID + " completed: " + job.isComplete() + " " + job.isSuccessful());</span> |
| <span class="source-line-no">238</span><span id="line-238"> Counters ctrs = job.getCounters();</span> |
| <span class="source-line-no">239</span><span id="line-239"> LOG.debug(Objects.toString(ctrs));</span> |
| <span class="source-line-no">240</span><span id="line-240"> if (job.isComplete() && !job.isSuccessful()) {</span> |
| <span class="source-line-no">241</span><span id="line-241"> throw new Exception("DistCp job-id: " + jobID + " failed");</span> |
| <span class="source-line-no">242</span><span id="line-242"> }</span> |
| <span class="source-line-no">243</span><span id="line-243"></span> |
| <span class="source-line-no">244</span><span id="line-244"> return job;</span> |
| <span class="source-line-no">245</span><span id="line-245"> }</span> |
| <span class="source-line-no">246</span><span id="line-246"></span> |
| <span class="source-line-no">247</span><span id="line-247"> private Field getInputOptionsField(Class<?> classDistCp) throws IOException {</span> |
| <span class="source-line-no">248</span><span id="line-248"> Field f = null;</span> |
| <span class="source-line-no">249</span><span id="line-249"> try {</span> |
| <span class="source-line-no">250</span><span id="line-250"> f = classDistCp.getDeclaredField("inputOptions");</span> |
| <span class="source-line-no">251</span><span id="line-251"> } catch (Exception e) {</span> |
| <span class="source-line-no">252</span><span id="line-252"> // Haddop 3</span> |
| <span class="source-line-no">253</span><span id="line-253"> try {</span> |
| <span class="source-line-no">254</span><span id="line-254"> f = classDistCp.getDeclaredField("context");</span> |
| <span class="source-line-no">255</span><span id="line-255"> } catch (NoSuchFieldException | SecurityException e1) {</span> |
| <span class="source-line-no">256</span><span id="line-256"> throw new IOException(e1);</span> |
| <span class="source-line-no">257</span><span id="line-257"> }</span> |
| <span class="source-line-no">258</span><span id="line-258"> }</span> |
| <span class="source-line-no">259</span><span id="line-259"> return f;</span> |
| <span class="source-line-no">260</span><span id="line-260"> }</span> |
| <span class="source-line-no">261</span><span id="line-261"></span> |
| <span class="source-line-no">262</span><span id="line-262"> @SuppressWarnings("unchecked")</span> |
| <span class="source-line-no">263</span><span id="line-263"> private List<Path> getSourcePaths(Field fieldInputOptions) throws IOException {</span> |
| <span class="source-line-no">264</span><span id="line-264"> Object options;</span> |
| <span class="source-line-no">265</span><span id="line-265"> try {</span> |
| <span class="source-line-no">266</span><span id="line-266"> options = fieldInputOptions.get(this);</span> |
| <span class="source-line-no">267</span><span id="line-267"> if (options instanceof DistCpOptions) {</span> |
| <span class="source-line-no">268</span><span id="line-268"> return ((DistCpOptions) options).getSourcePaths();</span> |
| <span class="source-line-no">269</span><span id="line-269"> } else {</span> |
| <span class="source-line-no">270</span><span id="line-270"> // Hadoop 3</span> |
| <span class="source-line-no">271</span><span id="line-271"> Class<?> classContext = Class.forName("org.apache.hadoop.tools.DistCpContext");</span> |
| <span class="source-line-no">272</span><span id="line-272"> Method methodGetSourcePaths = classContext.getDeclaredMethod("getSourcePaths");</span> |
| <span class="source-line-no">273</span><span id="line-273"> methodGetSourcePaths.setAccessible(true);</span> |
| <span class="source-line-no">274</span><span id="line-274"></span> |
| <span class="source-line-no">275</span><span id="line-275"> return (List<Path>) methodGetSourcePaths.invoke(options);</span> |
| <span class="source-line-no">276</span><span id="line-276"> }</span> |
| <span class="source-line-no">277</span><span id="line-277"> } catch (IllegalArgumentException | IllegalAccessException | ClassNotFoundException</span> |
| <span class="source-line-no">278</span><span id="line-278"> | NoSuchMethodException | SecurityException | InvocationTargetException e) {</span> |
| <span class="source-line-no">279</span><span id="line-279"> throw new IOException(e);</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</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"> @Override</span> |
| <span class="source-line-no">285</span><span id="line-285"> protected Path createInputFileListing(Job job) throws IOException {</span> |
| <span class="source-line-no">286</span><span id="line-286"></span> |
| <span class="source-line-no">287</span><span id="line-287"> if (conf.get(NUMBER_OF_LEVELS_TO_PRESERVE_KEY) == null) {</span> |
| <span class="source-line-no">288</span><span id="line-288"> return super.createInputFileListing(job);</span> |
| <span class="source-line-no">289</span><span id="line-289"> }</span> |
| <span class="source-line-no">290</span><span id="line-290"> long totalBytesExpected = 0;</span> |
| <span class="source-line-no">291</span><span id="line-291"> int totalRecords = 0;</span> |
| <span class="source-line-no">292</span><span id="line-292"> Path fileListingPath = getFileListingPath();</span> |
| <span class="source-line-no">293</span><span id="line-293"> try (SequenceFile.Writer writer = getWriter(fileListingPath)) {</span> |
| <span class="source-line-no">294</span><span id="line-294"> List<Path> srcFiles = getSourceFiles();</span> |
| <span class="source-line-no">295</span><span id="line-295"> if (srcFiles.size() == 0) {</span> |
| <span class="source-line-no">296</span><span id="line-296"> return fileListingPath;</span> |
| <span class="source-line-no">297</span><span id="line-297"> }</span> |
| <span class="source-line-no">298</span><span id="line-298"> totalRecords = srcFiles.size();</span> |
| <span class="source-line-no">299</span><span id="line-299"> FileSystem fs = srcFiles.get(0).getFileSystem(conf);</span> |
| <span class="source-line-no">300</span><span id="line-300"> for (Path path : srcFiles) {</span> |
| <span class="source-line-no">301</span><span id="line-301"> FileStatus fst = fs.getFileStatus(path);</span> |
| <span class="source-line-no">302</span><span id="line-302"> totalBytesExpected += fst.getLen();</span> |
| <span class="source-line-no">303</span><span id="line-303"> Text key = getKey(path);</span> |
| <span class="source-line-no">304</span><span id="line-304"> writer.append(key, new CopyListingFileStatus(fst));</span> |
| <span class="source-line-no">305</span><span id="line-305"> }</span> |
| <span class="source-line-no">306</span><span id="line-306"> writer.close();</span> |
| <span class="source-line-no">307</span><span id="line-307"></span> |
| <span class="source-line-no">308</span><span id="line-308"> // update jobs configuration</span> |
| <span class="source-line-no">309</span><span id="line-309"></span> |
| <span class="source-line-no">310</span><span id="line-310"> Configuration cfg = job.getConfiguration();</span> |
| <span class="source-line-no">311</span><span id="line-311"> cfg.setLong(DistCpConstants.CONF_LABEL_TOTAL_BYTES_TO_BE_COPIED, totalBytesExpected);</span> |
| <span class="source-line-no">312</span><span id="line-312"> cfg.set(DistCpConstants.CONF_LABEL_LISTING_FILE_PATH, fileListingPath.toString());</span> |
| <span class="source-line-no">313</span><span id="line-313"> cfg.setLong(DistCpConstants.CONF_LABEL_TOTAL_NUMBER_OF_RECORDS, totalRecords);</span> |
| <span class="source-line-no">314</span><span id="line-314"> } catch (NoSuchFieldException | SecurityException | IllegalArgumentException</span> |
| <span class="source-line-no">315</span><span id="line-315"> | IllegalAccessException | NoSuchMethodException | ClassNotFoundException</span> |
| <span class="source-line-no">316</span><span id="line-316"> | InvocationTargetException e) {</span> |
| <span class="source-line-no">317</span><span id="line-317"> throw new IOException(e);</span> |
| <span class="source-line-no">318</span><span id="line-318"> }</span> |
| <span class="source-line-no">319</span><span id="line-319"> return fileListingPath;</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"> private Text getKey(Path path) {</span> |
| <span class="source-line-no">323</span><span id="line-323"> int level = conf.getInt(NUMBER_OF_LEVELS_TO_PRESERVE_KEY, 1);</span> |
| <span class="source-line-no">324</span><span id="line-324"> int count = 0;</span> |
| <span class="source-line-no">325</span><span id="line-325"> String relPath = "";</span> |
| <span class="source-line-no">326</span><span id="line-326"> while (count++ < level) {</span> |
| <span class="source-line-no">327</span><span id="line-327"> relPath = Path.SEPARATOR + path.getName() + relPath;</span> |
| <span class="source-line-no">328</span><span id="line-328"> path = path.getParent();</span> |
| <span class="source-line-no">329</span><span id="line-329"> }</span> |
| <span class="source-line-no">330</span><span id="line-330"> return new Text(relPath);</span> |
| <span class="source-line-no">331</span><span id="line-331"> }</span> |
| <span class="source-line-no">332</span><span id="line-332"></span> |
| <span class="source-line-no">333</span><span id="line-333"> private List<Path> getSourceFiles() throws NoSuchFieldException, SecurityException,</span> |
| <span class="source-line-no">334</span><span id="line-334"> IllegalArgumentException, IllegalAccessException, NoSuchMethodException,</span> |
| <span class="source-line-no">335</span><span id="line-335"> ClassNotFoundException, InvocationTargetException, IOException {</span> |
| <span class="source-line-no">336</span><span id="line-336"> Field options = null;</span> |
| <span class="source-line-no">337</span><span id="line-337"> try {</span> |
| <span class="source-line-no">338</span><span id="line-338"> options = DistCp.class.getDeclaredField("inputOptions");</span> |
| <span class="source-line-no">339</span><span id="line-339"> } catch (NoSuchFieldException | SecurityException e) {</span> |
| <span class="source-line-no">340</span><span id="line-340"> options = DistCp.class.getDeclaredField("context");</span> |
| <span class="source-line-no">341</span><span id="line-341"> }</span> |
| <span class="source-line-no">342</span><span id="line-342"> options.setAccessible(true);</span> |
| <span class="source-line-no">343</span><span id="line-343"> return getSourcePaths(options);</span> |
| <span class="source-line-no">344</span><span id="line-344"> }</span> |
| <span class="source-line-no">345</span><span id="line-345"></span> |
| <span class="source-line-no">346</span><span id="line-346"> private SequenceFile.Writer getWriter(Path pathToListFile) throws IOException {</span> |
| <span class="source-line-no">347</span><span id="line-347"> FileSystem fs = pathToListFile.getFileSystem(conf);</span> |
| <span class="source-line-no">348</span><span id="line-348"> fs.delete(pathToListFile, false);</span> |
| <span class="source-line-no">349</span><span id="line-349"> return SequenceFile.createWriter(conf, SequenceFile.Writer.file(pathToListFile),</span> |
| <span class="source-line-no">350</span><span id="line-350"> SequenceFile.Writer.keyClass(Text.class),</span> |
| <span class="source-line-no">351</span><span id="line-351"> SequenceFile.Writer.valueClass(CopyListingFileStatus.class),</span> |
| <span class="source-line-no">352</span><span id="line-352"> SequenceFile.Writer.compression(SequenceFile.CompressionType.NONE));</span> |
| <span class="source-line-no">353</span><span id="line-353"> }</span> |
| <span class="source-line-no">354</span><span id="line-354"></span> |
| <span class="source-line-no">355</span><span id="line-355"> }</span> |
| <span class="source-line-no">356</span><span id="line-356"></span> |
| <span class="source-line-no">357</span><span id="line-357"> /**</span> |
| <span class="source-line-no">358</span><span id="line-358"> * Do backup copy based on different types.</span> |
| <span class="source-line-no">359</span><span id="line-359"> * @param context The backup info</span> |
| <span class="source-line-no">360</span><span id="line-360"> * @param conf The hadoop configuration</span> |
| <span class="source-line-no">361</span><span id="line-361"> * @param copyType The backup copy type</span> |
| <span class="source-line-no">362</span><span id="line-362"> * @param options Options for customized ExportSnapshot or DistCp</span> |
| <span class="source-line-no">363</span><span id="line-363"> * @throws IOException exception</span> |
| <span class="source-line-no">364</span><span id="line-364"> */</span> |
| <span class="source-line-no">365</span><span id="line-365"> @Override</span> |
| <span class="source-line-no">366</span><span id="line-366"> public int copy(BackupInfo context, BackupManager backupManager, Configuration conf,</span> |
| <span class="source-line-no">367</span><span id="line-367"> BackupType copyType, String[] options) throws IOException {</span> |
| <span class="source-line-no">368</span><span id="line-368"> int res = 0;</span> |
| <span class="source-line-no">369</span><span id="line-369"></span> |
| <span class="source-line-no">370</span><span id="line-370"> try {</span> |
| <span class="source-line-no">371</span><span id="line-371"> if (copyType == BackupType.FULL) {</span> |
| <span class="source-line-no">372</span><span id="line-372"> SnapshotCopy snapshotCp = new SnapshotCopy(context, context.getTableBySnapshot(options[1]));</span> |
| <span class="source-line-no">373</span><span id="line-373"> LOG.debug("Doing SNAPSHOT_COPY");</span> |
| <span class="source-line-no">374</span><span id="line-374"> // Make a new instance of conf to be used by the snapshot copy class.</span> |
| <span class="source-line-no">375</span><span id="line-375"> snapshotCp.setConf(new Configuration(conf));</span> |
| <span class="source-line-no">376</span><span id="line-376"> res = snapshotCp.run(options);</span> |
| <span class="source-line-no">377</span><span id="line-377"></span> |
| <span class="source-line-no">378</span><span id="line-378"> } else if (copyType == BackupType.INCREMENTAL) {</span> |
| <span class="source-line-no">379</span><span id="line-379"> LOG.debug("Doing COPY_TYPE_DISTCP");</span> |
| <span class="source-line-no">380</span><span id="line-380"> setSubTaskPercntgInWholeTask(1f);</span> |
| <span class="source-line-no">381</span><span id="line-381"></span> |
| <span class="source-line-no">382</span><span id="line-382"> BackupDistCp distcp =</span> |
| <span class="source-line-no">383</span><span id="line-383"> new BackupDistCp(new Configuration(conf), null, context, backupManager);</span> |
| <span class="source-line-no">384</span><span id="line-384"> // Handle a special case where the source file is a single file.</span> |
| <span class="source-line-no">385</span><span id="line-385"> // In this case, distcp will not create the target dir. It just take the</span> |
| <span class="source-line-no">386</span><span id="line-386"> // target as a file name and copy source file to the target (as a file name).</span> |
| <span class="source-line-no">387</span><span id="line-387"> // We need to create the target dir before run distcp.</span> |
| <span class="source-line-no">388</span><span id="line-388"> LOG.debug("DistCp options: " + Arrays.toString(options));</span> |
| <span class="source-line-no">389</span><span id="line-389"> Path dest = new Path(options[options.length - 1]);</span> |
| <span class="source-line-no">390</span><span id="line-390"> String[] newOptions = new String[options.length + 1];</span> |
| <span class="source-line-no">391</span><span id="line-391"> System.arraycopy(options, 0, newOptions, 1, options.length);</span> |
| <span class="source-line-no">392</span><span id="line-392"> newOptions[0] = "-async"; // run DisCp in async mode</span> |
| <span class="source-line-no">393</span><span id="line-393"> FileSystem destfs = dest.getFileSystem(conf);</span> |
| <span class="source-line-no">394</span><span id="line-394"> if (!destfs.exists(dest)) {</span> |
| <span class="source-line-no">395</span><span id="line-395"> destfs.mkdirs(dest);</span> |
| <span class="source-line-no">396</span><span id="line-396"> }</span> |
| <span class="source-line-no">397</span><span id="line-397"> res = distcp.run(newOptions);</span> |
| <span class="source-line-no">398</span><span id="line-398"> }</span> |
| <span class="source-line-no">399</span><span id="line-399"> return res;</span> |
| <span class="source-line-no">400</span><span id="line-400"></span> |
| <span class="source-line-no">401</span><span id="line-401"> } catch (Exception e) {</span> |
| <span class="source-line-no">402</span><span id="line-402"> throw new IOException(e);</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"></span> |
| <span class="source-line-no">406</span><span id="line-406"> @Override</span> |
| <span class="source-line-no">407</span><span id="line-407"> public void cancel(String jobId) throws IOException {</span> |
| <span class="source-line-no">408</span><span id="line-408"> JobID id = JobID.forName(jobId);</span> |
| <span class="source-line-no">409</span><span id="line-409"> Cluster cluster = new Cluster(this.getConf());</span> |
| <span class="source-line-no">410</span><span id="line-410"> try {</span> |
| <span class="source-line-no">411</span><span id="line-411"> Job job = cluster.getJob(id);</span> |
| <span class="source-line-no">412</span><span id="line-412"> if (job == null) {</span> |
| <span class="source-line-no">413</span><span id="line-413"> LOG.error("No job found for " + id);</span> |
| <span class="source-line-no">414</span><span id="line-414"> // should we throw exception</span> |
| <span class="source-line-no">415</span><span id="line-415"> return;</span> |
| <span class="source-line-no">416</span><span id="line-416"> }</span> |
| <span class="source-line-no">417</span><span id="line-417"> if (job.isComplete() || job.isRetired()) {</span> |
| <span class="source-line-no">418</span><span id="line-418"> return;</span> |
| <span class="source-line-no">419</span><span id="line-419"> }</span> |
| <span class="source-line-no">420</span><span id="line-420"></span> |
| <span class="source-line-no">421</span><span id="line-421"> job.killJob();</span> |
| <span class="source-line-no">422</span><span id="line-422"> LOG.debug("Killed copy job " + id);</span> |
| <span class="source-line-no">423</span><span id="line-423"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">424</span><span id="line-424"> throw new IOException(e);</span> |
| <span class="source-line-no">425</span><span id="line-425"> }</span> |
| <span class="source-line-no">426</span><span id="line-426"> }</span> |
| <span class="source-line-no">427</span><span id="line-427"></span> |
| <span class="source-line-no">428</span><span id="line-428">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
