You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2017/04/13 14:58:44 UTC
[09/22] hbase-site git commit: Published site at
da5fb27eabed4a4b4d251be973ee945fb52895bf.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7b1830cf/devapidocs/src-html/org/apache/hadoop/hbase/snapshot/ExportSnapshot.Testing.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/snapshot/ExportSnapshot.Testing.html b/devapidocs/src-html/org/apache/hadoop/hbase/snapshot/ExportSnapshot.Testing.html
new file mode 100644
index 0000000..b6fb3b4
--- /dev/null
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/snapshot/ExportSnapshot.Testing.html
@@ -0,0 +1,1183 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *<a name="line.9"></a>
+<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
+<span class="sourceLineNo">017</span> */<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.snapshot;<a name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.io.BufferedInputStream;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.io.FileNotFoundException;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.io.DataInput;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.io.DataOutput;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.io.InputStream;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.ArrayList;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.Collections;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Comparator;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.LinkedList;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.List;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.cli.CommandLine;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.commons.cli.Option;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.commons.logging.Log;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.commons.logging.LogFactory;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.conf.Configuration;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.fs.FSDataOutputStream;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.fs.FileChecksum;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.fs.FileStatus;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.fs.FileSystem;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.fs.FileUtil;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.fs.Path;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.fs.permission.FsPermission;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.TableName;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.HConstants;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.io.FileLink;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.io.HFileLink;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.io.WALLink;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.mob.MobUtils;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.SnapshotDescription;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotFileInfo;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.util.AbstractHBaseTool;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.util.HFileArchiveUtil;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.io.BytesWritable;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.io.IOUtils;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.io.NullWritable;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.io.Writable;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.mapreduce.Job;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.mapreduce.JobContext;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.mapreduce.Mapper;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.mapreduce.InputFormat;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.mapreduce.InputSplit;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.mapreduce.RecordReader;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.mapreduce.TaskAttemptContext;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.mapreduce.security.TokenCache;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.io.hadoopbackport.ThrottledInputStream;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.util.StringUtils;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.util.Tool;<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span>/**<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * Export the specified snapshot to a given FileSystem.<a name="line.81"></a>
+<span class="sourceLineNo">082</span> *<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * The .snapshot/name folder is copied to the destination cluster<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * and then all the hfiles/wals are copied using a Map-Reduce Job in the .archive/ location.<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * When everything is done, the second cluster can restore the snapshot.<a name="line.85"></a>
+<span class="sourceLineNo">086</span> */<a name="line.86"></a>
+<span class="sourceLineNo">087</span>@InterfaceAudience.Public<a name="line.87"></a>
+<span class="sourceLineNo">088</span>public class ExportSnapshot extends AbstractHBaseTool implements Tool {<a name="line.88"></a>
+<span class="sourceLineNo">089</span> public static final String NAME = "exportsnapshot";<a name="line.89"></a>
+<span class="sourceLineNo">090</span> /** Configuration prefix for overrides for the source filesystem */<a name="line.90"></a>
+<span class="sourceLineNo">091</span> public static final String CONF_SOURCE_PREFIX = NAME + ".from.";<a name="line.91"></a>
+<span class="sourceLineNo">092</span> /** Configuration prefix for overrides for the destination filesystem */<a name="line.92"></a>
+<span class="sourceLineNo">093</span> public static final String CONF_DEST_PREFIX = NAME + ".to.";<a name="line.93"></a>
+<span class="sourceLineNo">094</span><a name="line.94"></a>
+<span class="sourceLineNo">095</span> private static final Log LOG = LogFactory.getLog(ExportSnapshot.class);<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> private static final String MR_NUM_MAPS = "mapreduce.job.maps";<a name="line.97"></a>
+<span class="sourceLineNo">098</span> private static final String CONF_NUM_SPLITS = "snapshot.export.format.splits";<a name="line.98"></a>
+<span class="sourceLineNo">099</span> private static final String CONF_SNAPSHOT_NAME = "snapshot.export.format.snapshot.name";<a name="line.99"></a>
+<span class="sourceLineNo">100</span> private static final String CONF_SNAPSHOT_DIR = "snapshot.export.format.snapshot.dir";<a name="line.100"></a>
+<span class="sourceLineNo">101</span> private static final String CONF_FILES_USER = "snapshot.export.files.attributes.user";<a name="line.101"></a>
+<span class="sourceLineNo">102</span> private static final String CONF_FILES_GROUP = "snapshot.export.files.attributes.group";<a name="line.102"></a>
+<span class="sourceLineNo">103</span> private static final String CONF_FILES_MODE = "snapshot.export.files.attributes.mode";<a name="line.103"></a>
+<span class="sourceLineNo">104</span> private static final String CONF_CHECKSUM_VERIFY = "snapshot.export.checksum.verify";<a name="line.104"></a>
+<span class="sourceLineNo">105</span> private static final String CONF_OUTPUT_ROOT = "snapshot.export.output.root";<a name="line.105"></a>
+<span class="sourceLineNo">106</span> private static final String CONF_INPUT_ROOT = "snapshot.export.input.root";<a name="line.106"></a>
+<span class="sourceLineNo">107</span> private static final String CONF_BUFFER_SIZE = "snapshot.export.buffer.size";<a name="line.107"></a>
+<span class="sourceLineNo">108</span> private static final String CONF_MAP_GROUP = "snapshot.export.default.map.group";<a name="line.108"></a>
+<span class="sourceLineNo">109</span> private static final String CONF_BANDWIDTH_MB = "snapshot.export.map.bandwidth.mb";<a name="line.109"></a>
+<span class="sourceLineNo">110</span> protected static final String CONF_SKIP_TMP = "snapshot.export.skip.tmp";<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span> static class Testing {<a name="line.112"></a>
+<span class="sourceLineNo">113</span> static final String CONF_TEST_FAILURE = "test.snapshot.export.failure";<a name="line.113"></a>
+<span class="sourceLineNo">114</span> static final String CONF_TEST_FAILURE_COUNT = "test.snapshot.export.failure.count";<a name="line.114"></a>
+<span class="sourceLineNo">115</span> int failuresCountToInject = 0;<a name="line.115"></a>
+<span class="sourceLineNo">116</span> int injectedFailureCount = 0;<a name="line.116"></a>
+<span class="sourceLineNo">117</span> }<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span> // Command line options and defaults.<a name="line.119"></a>
+<span class="sourceLineNo">120</span> static final class Options {<a name="line.120"></a>
+<span class="sourceLineNo">121</span> static final Option SNAPSHOT = new Option(null, "snapshot", true, "Snapshot to restore.");<a name="line.121"></a>
+<span class="sourceLineNo">122</span> static final Option TARGET_NAME = new Option(null, "target", true,<a name="line.122"></a>
+<span class="sourceLineNo">123</span> "Target name for the snapshot.");<a name="line.123"></a>
+<span class="sourceLineNo">124</span> static final Option COPY_TO = new Option(null, "copy-to", true, "Remote "<a name="line.124"></a>
+<span class="sourceLineNo">125</span> + "destination hdfs://");<a name="line.125"></a>
+<span class="sourceLineNo">126</span> static final Option COPY_FROM = new Option(null, "copy-from", true,<a name="line.126"></a>
+<span class="sourceLineNo">127</span> "Input folder hdfs:// (default hbase.rootdir)");<a name="line.127"></a>
+<span class="sourceLineNo">128</span> static final Option NO_CHECKSUM_VERIFY = new Option(null, "no-checksum-verify", false,<a name="line.128"></a>
+<span class="sourceLineNo">129</span> "Do not verify checksum, use name+length only.");<a name="line.129"></a>
+<span class="sourceLineNo">130</span> static final Option NO_TARGET_VERIFY = new Option(null, "no-target-verify", false,<a name="line.130"></a>
+<span class="sourceLineNo">131</span> "Do not verify the integrity of the exported snapshot.");<a name="line.131"></a>
+<span class="sourceLineNo">132</span> static final Option OVERWRITE = new Option(null, "overwrite", false,<a name="line.132"></a>
+<span class="sourceLineNo">133</span> "Rewrite the snapshot manifest if already exists.");<a name="line.133"></a>
+<span class="sourceLineNo">134</span> static final Option CHUSER = new Option(null, "chuser", true,<a name="line.134"></a>
+<span class="sourceLineNo">135</span> "Change the owner of the files to the specified one.");<a name="line.135"></a>
+<span class="sourceLineNo">136</span> static final Option CHGROUP = new Option(null, "chgroup", true,<a name="line.136"></a>
+<span class="sourceLineNo">137</span> "Change the group of the files to the specified one.");<a name="line.137"></a>
+<span class="sourceLineNo">138</span> static final Option CHMOD = new Option(null, "chmod", true,<a name="line.138"></a>
+<span class="sourceLineNo">139</span> "Change the permission of the files to the specified one.");<a name="line.139"></a>
+<span class="sourceLineNo">140</span> static final Option MAPPERS = new Option(null, "mappers", true,<a name="line.140"></a>
+<span class="sourceLineNo">141</span> "Number of mappers to use during the copy (mapreduce.job.maps).");<a name="line.141"></a>
+<span class="sourceLineNo">142</span> static final Option BANDWIDTH = new Option(null, "bandwidth", true,<a name="line.142"></a>
+<span class="sourceLineNo">143</span> "Limit bandwidth to this value in MB/second.");<a name="line.143"></a>
+<span class="sourceLineNo">144</span> }<a name="line.144"></a>
+<span class="sourceLineNo">145</span><a name="line.145"></a>
+<span class="sourceLineNo">146</span> // Export Map-Reduce Counters, to keep track of the progress<a name="line.146"></a>
+<span class="sourceLineNo">147</span> public enum Counter {<a name="line.147"></a>
+<span class="sourceLineNo">148</span> MISSING_FILES, FILES_COPIED, FILES_SKIPPED, COPY_FAILED,<a name="line.148"></a>
+<span class="sourceLineNo">149</span> BYTES_EXPECTED, BYTES_SKIPPED, BYTES_COPIED<a name="line.149"></a>
+<span class="sourceLineNo">150</span> }<a name="line.150"></a>
+<span class="sourceLineNo">151</span><a name="line.151"></a>
+<span class="sourceLineNo">152</span> private static class ExportMapper extends Mapper<BytesWritable, NullWritable,<a name="line.152"></a>
+<span class="sourceLineNo">153</span> NullWritable, NullWritable> {<a name="line.153"></a>
+<span class="sourceLineNo">154</span> private static final Log LOG = LogFactory.getLog(ExportMapper.class);<a name="line.154"></a>
+<span class="sourceLineNo">155</span> final static int REPORT_SIZE = 1 * 1024 * 1024;<a name="line.155"></a>
+<span class="sourceLineNo">156</span> final static int BUFFER_SIZE = 64 * 1024;<a name="line.156"></a>
+<span class="sourceLineNo">157</span><a name="line.157"></a>
+<span class="sourceLineNo">158</span> private boolean verifyChecksum;<a name="line.158"></a>
+<span class="sourceLineNo">159</span> private String filesGroup;<a name="line.159"></a>
+<span class="sourceLineNo">160</span> private String filesUser;<a name="line.160"></a>
+<span class="sourceLineNo">161</span> private short filesMode;<a name="line.161"></a>
+<span class="sourceLineNo">162</span> private int bufferSize;<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> private FileSystem outputFs;<a name="line.164"></a>
+<span class="sourceLineNo">165</span> private Path outputArchive;<a name="line.165"></a>
+<span class="sourceLineNo">166</span> private Path outputRoot;<a name="line.166"></a>
+<span class="sourceLineNo">167</span><a name="line.167"></a>
+<span class="sourceLineNo">168</span> private FileSystem inputFs;<a name="line.168"></a>
+<span class="sourceLineNo">169</span> private Path inputArchive;<a name="line.169"></a>
+<span class="sourceLineNo">170</span> private Path inputRoot;<a name="line.170"></a>
+<span class="sourceLineNo">171</span><a name="line.171"></a>
+<span class="sourceLineNo">172</span> private static Testing testing = new Testing();<a name="line.172"></a>
+<span class="sourceLineNo">173</span><a name="line.173"></a>
+<span class="sourceLineNo">174</span> @Override<a name="line.174"></a>
+<span class="sourceLineNo">175</span> public void setup(Context context) throws IOException {<a name="line.175"></a>
+<span class="sourceLineNo">176</span> Configuration conf = context.getConfiguration();<a name="line.176"></a>
+<span class="sourceLineNo">177</span><a name="line.177"></a>
+<span class="sourceLineNo">178</span> Configuration srcConf = HBaseConfiguration.createClusterConf(conf, null, CONF_SOURCE_PREFIX);<a name="line.178"></a>
+<span class="sourceLineNo">179</span> Configuration destConf = HBaseConfiguration.createClusterConf(conf, null, CONF_DEST_PREFIX);<a name="line.179"></a>
+<span class="sourceLineNo">180</span><a name="line.180"></a>
+<span class="sourceLineNo">181</span> verifyChecksum = conf.getBoolean(CONF_CHECKSUM_VERIFY, true);<a name="line.181"></a>
+<span class="sourceLineNo">182</span><a name="line.182"></a>
+<span class="sourceLineNo">183</span> filesGroup = conf.get(CONF_FILES_GROUP);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> filesUser = conf.get(CONF_FILES_USER);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> filesMode = (short)conf.getInt(CONF_FILES_MODE, 0);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> outputRoot = new Path(conf.get(CONF_OUTPUT_ROOT));<a name="line.186"></a>
+<span class="sourceLineNo">187</span> inputRoot = new Path(conf.get(CONF_INPUT_ROOT));<a name="line.187"></a>
+<span class="sourceLineNo">188</span><a name="line.188"></a>
+<span class="sourceLineNo">189</span> inputArchive = new Path(inputRoot, HConstants.HFILE_ARCHIVE_DIRECTORY);<a name="line.189"></a>
+<span class="sourceLineNo">190</span> outputArchive = new Path(outputRoot, HConstants.HFILE_ARCHIVE_DIRECTORY);<a name="line.190"></a>
+<span class="sourceLineNo">191</span><a name="line.191"></a>
+<span class="sourceLineNo">192</span> try {<a name="line.192"></a>
+<span class="sourceLineNo">193</span> srcConf.setBoolean("fs." + inputRoot.toUri().getScheme() + ".impl.disable.cache", true);<a name="line.193"></a>
+<span class="sourceLineNo">194</span> inputFs = FileSystem.get(inputRoot.toUri(), srcConf);<a name="line.194"></a>
+<span class="sourceLineNo">195</span> } catch (IOException e) {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> throw new IOException("Could not get the input FileSystem with root=" + inputRoot, e);<a name="line.196"></a>
+<span class="sourceLineNo">197</span> }<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span> try {<a name="line.199"></a>
+<span class="sourceLineNo">200</span> destConf.setBoolean("fs." + outputRoot.toUri().getScheme() + ".impl.disable.cache", true);<a name="line.200"></a>
+<span class="sourceLineNo">201</span> outputFs = FileSystem.get(outputRoot.toUri(), destConf);<a name="line.201"></a>
+<span class="sourceLineNo">202</span> } catch (IOException e) {<a name="line.202"></a>
+<span class="sourceLineNo">203</span> throw new IOException("Could not get the output FileSystem with root="+ outputRoot, e);<a name="line.203"></a>
+<span class="sourceLineNo">204</span> }<a name="line.204"></a>
+<span class="sourceLineNo">205</span><a name="line.205"></a>
+<span class="sourceLineNo">206</span> // Use the default block size of the outputFs if bigger<a name="line.206"></a>
+<span class="sourceLineNo">207</span> int defaultBlockSize = Math.max((int) outputFs.getDefaultBlockSize(outputRoot), BUFFER_SIZE);<a name="line.207"></a>
+<span class="sourceLineNo">208</span> bufferSize = conf.getInt(CONF_BUFFER_SIZE, defaultBlockSize);<a name="line.208"></a>
+<span class="sourceLineNo">209</span> LOG.info("Using bufferSize=" + StringUtils.humanReadableInt(bufferSize));<a name="line.209"></a>
+<span class="sourceLineNo">210</span><a name="line.210"></a>
+<span class="sourceLineNo">211</span> for (Counter c : Counter.values()) {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> context.getCounter(c).increment(0);<a name="line.212"></a>
+<span class="sourceLineNo">213</span> }<a name="line.213"></a>
+<span class="sourceLineNo">214</span> if (context.getConfiguration().getBoolean(Testing.CONF_TEST_FAILURE, false)) {<a name="line.214"></a>
+<span class="sourceLineNo">215</span> testing.failuresCountToInject = conf.getInt(Testing.CONF_TEST_FAILURE_COUNT, 0);<a name="line.215"></a>
+<span class="sourceLineNo">216</span> // Get number of times we have already injected failure based on attempt number of this<a name="line.216"></a>
+<span class="sourceLineNo">217</span> // task.<a name="line.217"></a>
+<span class="sourceLineNo">218</span> testing.injectedFailureCount = context.getTaskAttemptID().getId();<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span> }<a name="line.220"></a>
+<span class="sourceLineNo">221</span><a name="line.221"></a>
+<span class="sourceLineNo">222</span> @Override<a name="line.222"></a>
+<span class="sourceLineNo">223</span> protected void cleanup(Context context) {<a name="line.223"></a>
+<span class="sourceLineNo">224</span> IOUtils.closeStream(inputFs);<a name="line.224"></a>
+<span class="sourceLineNo">225</span> IOUtils.closeStream(outputFs);<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span><a name="line.227"></a>
+<span class="sourceLineNo">228</span> @Override<a name="line.228"></a>
+<span class="sourceLineNo">229</span> public void map(BytesWritable key, NullWritable value, Context context)<a name="line.229"></a>
+<span class="sourceLineNo">230</span> throws InterruptedException, IOException {<a name="line.230"></a>
+<span class="sourceLineNo">231</span> SnapshotFileInfo inputInfo = SnapshotFileInfo.parseFrom(key.copyBytes());<a name="line.231"></a>
+<span class="sourceLineNo">232</span> Path outputPath = getOutputPath(inputInfo);<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span> copyFile(context, inputInfo, outputPath);<a name="line.234"></a>
+<span class="sourceLineNo">235</span> }<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span> /**<a name="line.237"></a>
+<span class="sourceLineNo">238</span> * Returns the location where the inputPath will be copied.<a name="line.238"></a>
+<span class="sourceLineNo">239</span> */<a name="line.239"></a>
+<span class="sourceLineNo">240</span> private Path getOutputPath(final SnapshotFileInfo inputInfo) throws IOException {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> Path path = null;<a name="line.241"></a>
+<span class="sourceLineNo">242</span> switch (inputInfo.getType()) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span> case HFILE:<a name="line.243"></a>
+<span class="sourceLineNo">244</span> Path inputPath = new Path(inputInfo.getHfile());<a name="line.244"></a>
+<span class="sourceLineNo">245</span> String family = inputPath.getParent().getName();<a name="line.245"></a>
+<span class="sourceLineNo">246</span> TableName table =HFileLink.getReferencedTableName(inputPath.getName());<a name="line.246"></a>
+<span class="sourceLineNo">247</span> String region = HFileLink.getReferencedRegionName(inputPath.getName());<a name="line.247"></a>
+<span class="sourceLineNo">248</span> String hfile = HFileLink.getReferencedHFileName(inputPath.getName());<a name="line.248"></a>
+<span class="sourceLineNo">249</span> path = new Path(FSUtils.getTableDir(new Path("./"), table),<a name="line.249"></a>
+<span class="sourceLineNo">250</span> new Path(region, new Path(family, hfile)));<a name="line.250"></a>
+<span class="sourceLineNo">251</span> break;<a name="line.251"></a>
+<span class="sourceLineNo">252</span> case WAL:<a name="line.252"></a>
+<span class="sourceLineNo">253</span> LOG.warn("snapshot does not keeps WALs: " + inputInfo);<a name="line.253"></a>
+<span class="sourceLineNo">254</span> break;<a name="line.254"></a>
+<span class="sourceLineNo">255</span> default:<a name="line.255"></a>
+<span class="sourceLineNo">256</span> throw new IOException("Invalid File Type: " + inputInfo.getType().toString());<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span> return new Path(outputArchive, path);<a name="line.258"></a>
+<span class="sourceLineNo">259</span> }<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span> /**<a name="line.261"></a>
+<span class="sourceLineNo">262</span> * Used by TestExportSnapshot to test for retries when failures happen.<a name="line.262"></a>
+<span class="sourceLineNo">263</span> * Failure is injected in {@link #copyFile(Context, SnapshotFileInfo, Path)}.<a name="line.263"></a>
+<span class="sourceLineNo">264</span> */<a name="line.264"></a>
+<span class="sourceLineNo">265</span> private void injectTestFailure(final Context context, final SnapshotFileInfo inputInfo)<a name="line.265"></a>
+<span class="sourceLineNo">266</span> throws IOException {<a name="line.266"></a>
+<span class="sourceLineNo">267</span> if (!context.getConfiguration().getBoolean(Testing.CONF_TEST_FAILURE, false)) return;<a name="line.267"></a>
+<span class="sourceLineNo">268</span> if (testing.injectedFailureCount >= testing.failuresCountToInject) return;<a name="line.268"></a>
+<span class="sourceLineNo">269</span> testing.injectedFailureCount++;<a name="line.269"></a>
+<span class="sourceLineNo">270</span> context.getCounter(Counter.COPY_FAILED).increment(1);<a name="line.270"></a>
+<span class="sourceLineNo">271</span> LOG.debug("Injecting failure. Count: " + testing.injectedFailureCount);<a name="line.271"></a>
+<span class="sourceLineNo">272</span> throw new IOException(String.format("TEST FAILURE (%d of max %d): Unable to copy input=%s",<a name="line.272"></a>
+<span class="sourceLineNo">273</span> testing.injectedFailureCount, testing.failuresCountToInject, inputInfo));<a name="line.273"></a>
+<span class="sourceLineNo">274</span> }<a name="line.274"></a>
+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span> private void copyFile(final Context context, final SnapshotFileInfo inputInfo,<a name="line.276"></a>
+<span class="sourceLineNo">277</span> final Path outputPath) throws IOException {<a name="line.277"></a>
+<span class="sourceLineNo">278</span> // Get the file information<a name="line.278"></a>
+<span class="sourceLineNo">279</span> FileStatus inputStat = getSourceFileStatus(context, inputInfo);<a name="line.279"></a>
+<span class="sourceLineNo">280</span><a name="line.280"></a>
+<span class="sourceLineNo">281</span> // Verify if the output file exists and is the same that we want to copy<a name="line.281"></a>
+<span class="sourceLineNo">282</span> if (outputFs.exists(outputPath)) {<a name="line.282"></a>
+<span class="sourceLineNo">283</span> FileStatus outputStat = outputFs.getFileStatus(outputPath);<a name="line.283"></a>
+<span class="sourceLineNo">284</span> if (outputStat != null && sameFile(inputStat, outputStat)) {<a name="line.284"></a>
+<span class="sourceLineNo">285</span> LOG.info("Skip copy " + inputStat.getPath() + " to " + outputPath + ", same file.");<a name="line.285"></a>
+<span class="sourceLineNo">286</span> context.getCounter(Counter.FILES_SKIPPED).increment(1);<a name="line.286"></a>
+<span class="sourceLineNo">287</span> context.getCounter(Counter.BYTES_SKIPPED).increment(inputStat.getLen());<a name="line.287"></a>
+<span class="sourceLineNo">288</span> return;<a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span> }<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span> InputStream in = openSourceFile(context, inputInfo);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> int bandwidthMB = context.getConfiguration().getInt(CONF_BANDWIDTH_MB, 100);<a name="line.293"></a>
+<span class="sourceLineNo">294</span> if (Integer.MAX_VALUE != bandwidthMB) {<a name="line.294"></a>
+<span class="sourceLineNo">295</span> in = new ThrottledInputStream(new BufferedInputStream(in), bandwidthMB * 1024 * 1024L);<a name="line.295"></a>
+<span class="sourceLineNo">296</span> }<a name="line.296"></a>
+<span class="sourceLineNo">297</span><a name="line.297"></a>
+<span class="sourceLineNo">298</span> try {<a name="line.298"></a>
+<span class="sourceLineNo">299</span> context.getCounter(Counter.BYTES_EXPECTED).increment(inputStat.getLen());<a name="line.299"></a>
+<span class="sourceLineNo">300</span><a name="line.300"></a>
+<span class="sourceLineNo">301</span> // Ensure that the output folder is there and copy the file<a name="line.301"></a>
+<span class="sourceLineNo">302</span> createOutputPath(outputPath.getParent());<a name="line.302"></a>
+<span class="sourceLineNo">303</span> FSDataOutputStream out = outputFs.create(outputPath, true);<a name="line.303"></a>
+<span class="sourceLineNo">304</span> try {<a name="line.304"></a>
+<span class="sourceLineNo">305</span> copyData(context, inputStat.getPath(), in, outputPath, out, inputStat.getLen());<a name="line.305"></a>
+<span class="sourceLineNo">306</span> } finally {<a name="line.306"></a>
+<span class="sourceLineNo">307</span> out.close();<a name="line.307"></a>
+<span class="sourceLineNo">308</span> }<a name="line.308"></a>
+<span class="sourceLineNo">309</span><a name="line.309"></a>
+<span class="sourceLineNo">310</span> // Try to Preserve attributes<a name="line.310"></a>
+<span class="sourceLineNo">311</span> if (!preserveAttributes(outputPath, inputStat)) {<a name="line.311"></a>
+<span class="sourceLineNo">312</span> LOG.warn("You may have to run manually chown on: " + outputPath);<a name="line.312"></a>
+<span class="sourceLineNo">313</span> }<a name="line.313"></a>
+<span class="sourceLineNo">314</span> } finally {<a name="line.314"></a>
+<span class="sourceLineNo">315</span> in.close();<a name="line.315"></a>
+<span class="sourceLineNo">316</span> injectTestFailure(context, inputInfo);<a name="line.316"></a>
+<span class="sourceLineNo">317</span> }<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span><a name="line.319"></a>
+<span class="sourceLineNo">320</span> /**<a name="line.320"></a>
+<span class="sourceLineNo">321</span> * Create the output folder and optionally set ownership.<a name="line.321"></a>
+<span class="sourceLineNo">322</span> */<a name="line.322"></a>
+<span class="sourceLineNo">323</span> private void createOutputPath(final Path path) throws IOException {<a name="line.323"></a>
+<span class="sourceLineNo">324</span> if (filesUser == null && filesGroup == null) {<a name="line.324"></a>
+<span class="sourceLineNo">325</span> outputFs.mkdirs(path);<a name="line.325"></a>
+<span class="sourceLineNo">326</span> } else {<a name="line.326"></a>
+<span class="sourceLineNo">327</span> Path parent = path.getParent();<a name="line.327"></a>
+<span class="sourceLineNo">328</span> if (!outputFs.exists(parent) && !parent.isRoot()) {<a name="line.328"></a>
+<span class="sourceLineNo">329</span> createOutputPath(parent);<a name="line.329"></a>
+<span class="sourceLineNo">330</span> }<a name="line.330"></a>
+<span class="sourceLineNo">331</span> outputFs.mkdirs(path);<a name="line.331"></a>
+<span class="sourceLineNo">332</span> if (filesUser != null || filesGroup != null) {<a name="line.332"></a>
+<span class="sourceLineNo">333</span> // override the owner when non-null user/group is specified<a name="line.333"></a>
+<span class="sourceLineNo">334</span> outputFs.setOwner(path, filesUser, filesGroup);<a name="line.334"></a>
+<span class="sourceLineNo">335</span> }<a name="line.335"></a>
+<span class="sourceLineNo">336</span> if (filesMode > 0) {<a name="line.336"></a>
+<span class="sourceLineNo">337</span> outputFs.setPermission(path, new FsPermission(filesMode));<a name="line.337"></a>
+<span class="sourceLineNo">338</span> }<a name="line.338"></a>
+<span class="sourceLineNo">339</span> }<a name="line.339"></a>
+<span class="sourceLineNo">340</span> }<a name="line.340"></a>
+<span class="sourceLineNo">341</span><a name="line.341"></a>
+<span class="sourceLineNo">342</span> /**<a name="line.342"></a>
+<span class="sourceLineNo">343</span> * Try to Preserve the files attribute selected by the user copying them from the source file<a name="line.343"></a>
+<span class="sourceLineNo">344</span> * This is only required when you are exporting as a different user than "hbase" or on a system<a name="line.344"></a>
+<span class="sourceLineNo">345</span> * that doesn't have the "hbase" user.<a name="line.345"></a>
+<span class="sourceLineNo">346</span> *<a name="line.346"></a>
+<span class="sourceLineNo">347</span> * This is not considered a blocking failure since the user can force a chmod with the user<a name="line.347"></a>
+<span class="sourceLineNo">348</span> * that knows is available on the system.<a name="line.348"></a>
+<span class="sourceLineNo">349</span> */<a name="line.349"></a>
+<span class="sourceLineNo">350</span> private boolean preserveAttributes(final Path path, final FileStatus refStat) {<a name="line.350"></a>
+<span class="sourceLineNo">351</span> FileStatus stat;<a name="line.351"></a>
+<span class="sourceLineNo">352</span> try {<a name="line.352"></a>
+<span class="sourceLineNo">353</span> stat = outputFs.getFileStatus(path);<a name="line.353"></a>
+<span class="sourceLineNo">354</span> } catch (IOException e) {<a name="line.354"></a>
+<span class="sourceLineNo">355</span> LOG.warn("Unable to get the status for file=" + path);<a name="line.355"></a>
+<span class="sourceLineNo">356</span> return false;<a name="line.356"></a>
+<span class="sourceLineNo">357</span> }<a name="line.357"></a>
+<span class="sourceLineNo">358</span><a name="line.358"></a>
+<span class="sourceLineNo">359</span> try {<a name="line.359"></a>
+<span class="sourceLineNo">360</span> if (filesMode > 0 && stat.getPermission().toShort() != filesMode) {<a name="line.360"></a>
+<span class="sourceLineNo">361</span> outputFs.setPermission(path, new FsPermission(filesMode));<a name="line.361"></a>
+<span class="sourceLineNo">362</span> } else if (refStat != null && !stat.getPermission().equals(refStat.getPermission())) {<a name="line.362"></a>
+<span class="sourceLineNo">363</span> outputFs.setPermission(path, refStat.getPermission());<a name="line.363"></a>
+<span class="sourceLineNo">364</span> }<a name="line.364"></a>
+<span class="sourceLineNo">365</span> } catch (IOException e) {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> LOG.warn("Unable to set the permission for file="+ stat.getPath() +": "+ e.getMessage());<a name="line.366"></a>
+<span class="sourceLineNo">367</span> return false;<a name="line.367"></a>
+<span class="sourceLineNo">368</span> }<a name="line.368"></a>
+<span class="sourceLineNo">369</span><a name="line.369"></a>
+<span class="sourceLineNo">370</span> boolean hasRefStat = (refStat != null);<a name="line.370"></a>
+<span class="sourceLineNo">371</span> String user = stringIsNotEmpty(filesUser) || !hasRefStat ? filesUser : refStat.getOwner();<a name="line.371"></a>
+<span class="sourceLineNo">372</span> String group = stringIsNotEmpty(filesGroup) || !hasRefStat ? filesGroup : refStat.getGroup();<a name="line.372"></a>
+<span class="sourceLineNo">373</span> if (stringIsNotEmpty(user) || stringIsNotEmpty(group)) {<a name="line.373"></a>
+<span class="sourceLineNo">374</span> try {<a name="line.374"></a>
+<span class="sourceLineNo">375</span> if (!(user.equals(stat.getOwner()) && group.equals(stat.getGroup()))) {<a name="line.375"></a>
+<span class="sourceLineNo">376</span> outputFs.setOwner(path, user, group);<a name="line.376"></a>
+<span class="sourceLineNo">377</span> }<a name="line.377"></a>
+<span class="sourceLineNo">378</span> } catch (IOException e) {<a name="line.378"></a>
+<span class="sourceLineNo">379</span> LOG.warn("Unable to set the owner/group for file="+ stat.getPath() +": "+ e.getMessage());<a name="line.379"></a>
+<span class="sourceLineNo">380</span> LOG.warn("The user/group may not exist on the destination cluster: user=" +<a name="line.380"></a>
+<span class="sourceLineNo">381</span> user + " group=" + group);<a name="line.381"></a>
+<span class="sourceLineNo">382</span> return false;<a name="line.382"></a>
+<span class="sourceLineNo">383</span> }<a name="line.383"></a>
+<span class="sourceLineNo">384</span> }<a name="line.384"></a>
+<span class="sourceLineNo">385</span><a name="line.385"></a>
+<span class="sourceLineNo">386</span> return true;<a name="line.386"></a>
+<span class="sourceLineNo">387</span> }<a name="line.387"></a>
+<span class="sourceLineNo">388</span><a name="line.388"></a>
+<span class="sourceLineNo">389</span> private boolean stringIsNotEmpty(final String str) {<a name="line.389"></a>
+<span class="sourceLineNo">390</span> return str != null && str.length() > 0;<a name="line.390"></a>
+<span class="sourceLineNo">391</span> }<a name="line.391"></a>
+<span class="sourceLineNo">392</span><a name="line.392"></a>
+<span class="sourceLineNo">393</span> private void copyData(final Context context,<a name="line.393"></a>
+<span class="sourceLineNo">394</span> final Path inputPath, final InputStream in,<a name="line.394"></a>
+<span class="sourceLineNo">395</span> final Path outputPath, final FSDataOutputStream out,<a name="line.395"></a>
+<span class="sourceLineNo">396</span> final long inputFileSize)<a name="line.396"></a>
+<span class="sourceLineNo">397</span> throws IOException {<a name="line.397"></a>
+<span class="sourceLineNo">398</span> final String statusMessage = "copied %s/" + StringUtils.humanReadableInt(inputFileSize) +<a name="line.398"></a>
+<span class="sourceLineNo">399</span> " (%.1f%%)";<a name="line.399"></a>
+<span class="sourceLineNo">400</span><a name="line.400"></a>
+<span class="sourceLineNo">401</span> try {<a name="line.401"></a>
+<span class="sourceLineNo">402</span> byte[] buffer = new byte[bufferSize];<a name="line.402"></a>
+<span class="sourceLineNo">403</span> long totalBytesWritten = 0;<a name="line.403"></a>
+<span class="sourceLineNo">404</span> int reportBytes = 0;<a name="line.404"></a>
+<span class="sourceLineNo">405</span> int bytesRead;<a name="line.405"></a>
+<span class="sourceLineNo">406</span><a name="line.406"></a>
+<span class="sourceLineNo">407</span> long stime = System.currentTimeMillis();<a name="line.407"></a>
+<span class="sourceLineNo">408</span> while ((bytesRead = in.read(buffer)) > 0) {<a name="line.408"></a>
+<span class="sourceLineNo">409</span> out.write(buffer, 0, bytesRead);<a name="line.409"></a>
+<span class="sourceLineNo">410</span> totalBytesWritten += bytesRead;<a name="line.410"></a>
+<span class="sourceLineNo">411</span> reportBytes += bytesRead;<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span> if (reportBytes >= REPORT_SIZE) {<a name="line.413"></a>
+<span class="sourceLineNo">414</span> context.getCounter(Counter.BYTES_COPIED).increment(reportBytes);<a name="line.414"></a>
+<span class="sourceLineNo">415</span> context.setStatus(String.format(statusMessage,<a name="line.415"></a>
+<span class="sourceLineNo">416</span> StringUtils.humanReadableInt(totalBytesWritten),<a name="line.416"></a>
+<span class="sourceLineNo">417</span> (totalBytesWritten/(float)inputFileSize) * 100.0f) +<a name="line.417"></a>
+<span class="sourceLineNo">418</span> " from " + inputPath + " to " + outputPath);<a name="line.418"></a>
+<span class="sourceLineNo">419</span> reportBytes = 0;<a name="line.419"></a>
+<span class="sourceLineNo">420</span> }<a name="line.420"></a>
+<span class="sourceLineNo">421</span> }<a name="line.421"></a>
+<span class="sourceLineNo">422</span> long etime = System.currentTimeMillis();<a name="line.422"></a>
+<span class="sourceLineNo">423</span><a name="line.423"></a>
+<span class="sourceLineNo">424</span> context.getCounter(Counter.BYTES_COPIED).increment(reportBytes);<a name="line.424"></a>
+<span class="sourceLineNo">425</span> context.setStatus(String.format(statusMessage,<a name="line.425"></a>
+<span class="sourceLineNo">426</span> StringUtils.humanReadableInt(totalBytesWritten),<a name="line.426"></a>
+<span class="sourceLineNo">427</span> (totalBytesWritten/(float)inputFileSize) * 100.0f) +<a name="line.427"></a>
+<span class="sourceLineNo">428</span> " from " + inputPath + " to " + outputPath);<a name="line.428"></a>
+<span class="sourceLineNo">429</span><a name="line.429"></a>
+<span class="sourceLineNo">430</span> // Verify that the written size match<a name="line.430"></a>
+<span class="sourceLineNo">431</span> if (totalBytesWritten != inputFileSize) {<a name="line.431"></a>
+<span class="sourceLineNo">432</span> String msg = "number of bytes copied not matching copied=" + totalBytesWritten +<a name="line.432"></a>
+<span class="sourceLineNo">433</span> " expected=" + inputFileSize + " for file=" + inputPath;<a name="line.433"></a>
+<span class="sourceLineNo">434</span> throw new IOException(msg);<a name="line.434"></a>
+<span class="sourceLineNo">435</span> }<a name="line.435"></a>
+<span class="sourceLineNo">436</span><a name="line.436"></a>
+<span class="sourceLineNo">437</span> LOG.info("copy completed for input=" + inputPath + " output=" + outputPath);<a name="line.437"></a>
+<span class="sourceLineNo">438</span> LOG.info("size=" + totalBytesWritten +<a name="line.438"></a>
+<span class="sourceLineNo">439</span> " (" + StringUtils.humanReadableInt(totalBytesWritten) + ")" +<a name="line.439"></a>
+<span class="sourceLineNo">440</span> " time=" + StringUtils.formatTimeDiff(etime, stime) +<a name="line.440"></a>
+<span class="sourceLineNo">441</span> String.format(" %.3fM/sec", (totalBytesWritten / ((etime - stime)/1000.0))/1048576.0));<a name="line.441"></a>
+<span class="sourceLineNo">442</span> context.getCounter(Counter.FILES_COPIED).increment(1);<a name="line.442"></a>
+<span class="sourceLineNo">443</span> } catch (IOException e) {<a name="line.443"></a>
+<span class="sourceLineNo">444</span> LOG.error("Error copying " + inputPath + " to " + outputPath, e);<a name="line.444"></a>
+<span class="sourceLineNo">445</span> context.getCounter(Counter.COPY_FAILED).increment(1);<a name="line.445"></a>
+<span class="sourceLineNo">446</span> throw e;<a name="line.446"></a>
+<span class="sourceLineNo">447</span> }<a name="line.447"></a>
+<span class="sourceLineNo">448</span> }<a name="line.448"></a>
+<span class="sourceLineNo">449</span><a name="line.449"></a>
+<span class="sourceLineNo">450</span> /**<a name="line.450"></a>
+<span class="sourceLineNo">451</span> * Try to open the "source" file.<a name="line.451"></a>
+<span class="sourceLineNo">452</span> * Throws an IOException if the communication with the inputFs fail or<a name="line.452"></a>
+<span class="sourceLineNo">453</span> * if the file is not found.<a name="line.453"></a>
+<span class="sourceLineNo">454</span> */<a name="line.454"></a>
+<span class="sourceLineNo">455</span> private FSDataInputStream openSourceFile(Context context, final SnapshotFileInfo fileInfo)<a name="line.455"></a>
+<span class="sourceLineNo">456</span> throws IOException {<a name="line.456"></a>
+<span class="sourceLineNo">457</span> try {<a name="line.457"></a>
+<span class="sourceLineNo">458</span> Configuration conf = context.getConfiguration();<a name="line.458"></a>
+<span class="sourceLineNo">459</span> FileLink link = null;<a name="line.459"></a>
+<span class="sourceLineNo">460</span> switch (fileInfo.getType()) {<a name="line.460"></a>
+<span class="sourceLineNo">461</span> case HFILE:<a name="line.461"></a>
+<span class="sourceLineNo">462</span> Path inputPath = new Path(fileInfo.getHfile());<a name="line.462"></a>
+<span class="sourceLineNo">463</span> link = getFileLink(inputPath, conf);<a name="line.463"></a>
+<span class="sourceLineNo">464</span> break;<a name="line.464"></a>
+<span class="sourceLineNo">465</span> case WAL:<a name="line.465"></a>
+<span class="sourceLineNo">466</span> String serverName = fileInfo.getWalServer();<a name="line.466"></a>
+<span class="sourceLineNo">467</span> String logName = fileInfo.getWalName();<a name="line.467"></a>
+<span class="sourceLineNo">468</span> link = new WALLink(inputRoot, serverName, logName);<a name="line.468"></a>
+<span class="sourceLineNo">469</span> break;<a name="line.469"></a>
+<span class="sourceLineNo">470</span> default:<a name="line.470"></a>
+<span class="sourceLineNo">471</span> throw new IOException("Invalid File Type: " + fileInfo.getType().toString());<a name="line.471"></a>
+<span class="sourceLineNo">472</span> }<a name="line.472"></a>
+<span class="sourceLineNo">473</span> return link.open(inputFs);<a name="line.473"></a>
+<span class="sourceLineNo">474</span> } catch (IOException e) {<a name="line.474"></a>
+<span class="sourceLineNo">475</span> context.getCounter(Counter.MISSING_FILES).increment(1);<a name="line.475"></a>
+<span class="sourceLineNo">476</span> LOG.error("Unable to open source file=" + fileInfo.toString(), e);<a name="line.476"></a>
+<span class="sourceLineNo">477</span> throw e;<a name="line.477"></a>
+<span class="sourceLineNo">478</span> }<a name="line.478"></a>
+<span class="sourceLineNo">479</span> }<a name="line.479"></a>
+<span class="sourceLineNo">480</span><a name="line.480"></a>
+<span class="sourceLineNo">481</span> private FileStatus getSourceFileStatus(Context context, final SnapshotFileInfo fileInfo)<a name="line.481"></a>
+<span class="sourceLineNo">482</span> throws IOException {<a name="line.482"></a>
+<span class="sourceLineNo">483</span> try {<a name="line.483"></a>
+<span class="sourceLineNo">484</span> Configuration conf = context.getConfiguration();<a name="line.484"></a>
+<span class="sourceLineNo">485</span> FileLink link = null;<a name="line.485"></a>
+<span class="sourceLineNo">486</span> switch (fileInfo.getType()) {<a name="line.486"></a>
+<span class="sourceLineNo">487</span> case HFILE:<a name="line.487"></a>
+<span class="sourceLineNo">488</span> Path inputPath = new Path(fileInfo.getHfile());<a name="line.488"></a>
+<span class="sourceLineNo">489</span> link = getFileLink(inputPath, conf);<a name="line.489"></a>
+<span class="sourceLineNo">490</span> break;<a name="line.490"></a>
+<span class="sourceLineNo">491</span> case WAL:<a name="line.491"></a>
+<span class="sourceLineNo">492</span> link = new WALLink(inputRoot, fileInfo.getWalServer(), fileInfo.getWalName());<a name="line.492"></a>
+<span class="sourceLineNo">493</span> break;<a name="line.493"></a>
+<span class="sourceLineNo">494</span> default:<a name="line.494"></a>
+<span class="sourceLineNo">495</span> throw new IOException("Invalid File Type: " + fileInfo.getType().toString());<a name="line.495"></a>
+<span class="sourceLineNo">496</span> }<a name="line.496"></a>
+<span class="sourceLineNo">497</span> return link.getFileStatus(inputFs);<a name="line.497"></a>
+<span class="sourceLineNo">498</span> } catch (FileNotFoundException e) {<a name="line.498"></a>
+<span class="sourceLineNo">499</span> context.getCounter(Counter.MISSING_FILES).increment(1);<a name="line.499"></a>
+<span class="sourceLineNo">500</span> LOG.error("Unable to get the status for source file=" + fileInfo.toString(), e);<a name="line.500"></a>
+<span class="sourceLineNo">501</span> throw e;<a name="line.501"></a>
+<span class="sourceLineNo">502</span> } catch (IOException e) {<a name="line.502"></a>
+<span class="sourceLineNo">503</span> LOG.error("Unable to get the status for source file=" + fileInfo.toString(), e);<a name="line.503"></a>
+<span class="sourceLineNo">504</span> throw e;<a name="line.504"></a>
+<span class="sourceLineNo">505</span> }<a name="line.505"></a>
+<span class="sourceLineNo">506</span> }<a name="line.506"></a>
+<span class="sourceLineNo">507</span><a name="line.507"></a>
+<span class="sourceLineNo">508</span> private FileLink getFileLink(Path path, Configuration conf) throws IOException{<a name="line.508"></a>
+<span class="sourceLineNo">509</span> String regionName = HFileLink.getReferencedRegionName(path.getName());<a name="line.509"></a>
+<span class="sourceLineNo">510</span> TableName tableName = HFileLink.getReferencedTableName(path.getName());<a name="line.510"></a>
+<span class="sourceLineNo">511</span> if(MobUtils.getMobRegionInfo(tableName).getEncodedName().equals(regionName)) {<a name="line.511"></a>
+<span class="sourceLineNo">512</span> return HFileLink.buildFromHFileLinkPattern(MobUtils.getQualifiedMobRootDir(conf),<a name="line.512"></a>
+<span class="sourceLineNo">513</span> HFileArchiveUtil.getArchivePath(conf), path);<a name="line.513"></a>
+<span class="sourceLineNo">514</span> }<a name="line.514"></a>
+<span class="sourceLineNo">515</span> return HFileLink.buildFromHFileLinkPattern(inputRoot, inputArchive, path);<a name="line.515"></a>
+<span class="sourceLineNo">516</span> }<a name="line.516"></a>
+<span class="sourceLineNo">517</span><a name="line.517"></a>
+<span class="sourceLineNo">518</span> private FileChecksum getFileChecksum(final FileSystem fs, final Path path) {<a name="line.518"></a>
+<span class="sourceLineNo">519</span> try {<a name="line.519"></a>
+<span class="sourceLineNo">520</span> return fs.getFileChecksum(path);<a name="line.520"></a>
+<span class="sourceLineNo">521</span> } catch (IOException e) {<a name="line.521"></a>
+<span class="sourceLineNo">522</span> LOG.warn("Unable to get checksum for file=" + path, e);<a name="line.522"></a>
+<span class="sourceLineNo">523</span> return null;<a name="line.523"></a>
+<span class="sourceLineNo">524</span> }<a name="line.524"></a>
+<span class="sourceLineNo">525</span> }<a name="line.525"></a>
+<span class="sourceLineNo">526</span><a name="line.526"></a>
+<span class="sourceLineNo">527</span> /**<a name="line.527"></a>
+<span class="sourceLineNo">528</span> * Check if the two files are equal by looking at the file length,<a name="line.528"></a>
+<span class="sourceLineNo">529</span> * and at the checksum (if user has specified the verifyChecksum flag).<a name="line.529"></a>
+<span class="sourceLineNo">530</span> */<a name="line.530"></a>
+<span class="sourceLineNo">531</span> private boolean sameFile(final FileStatus inputStat, final FileStatus outputStat) {<a name="line.531"></a>
+<span class="sourceLineNo">532</span> // Not matching length<a name="line.532"></a>
+<span class="sourceLineNo">533</span> if (inputStat.getLen() != outputStat.getLen()) return false;<a name="line.533"></a>
+<span class="sourceLineNo">534</span><a name="line.534"></a>
+<span class="sourceLineNo">535</span> // Mark files as equals, since user asked for no checksum verification<a name="line.535"></a>
+<span class="sourceLineNo">536</span> if (!verifyChecksum) return true;<a name="line.536"></a>
+<span class="sourceLineNo">537</span><a name="line.537"></a>
+<span class="sourceLineNo">538</span> // If checksums are not available, files are not the same.<a name="line.538"></a>
+<span class="sourceLineNo">539</span> FileChecksum inChecksum = getFileChecksum(inputFs, inputStat.getPath());<a name="line.539"></a>
+<span class="sourceLineNo">540</span> if (inChecksum == null) return false;<a name="line.540"></a>
+<span class="sourceLineNo">541</span><a name="line.541"></a>
+<span class="sourceLineNo">542</span> FileChecksum outChecksum = getFileChecksum(outputFs, outputStat.getPath());<a name="line.542"></a>
+<span class="sourceLineNo">543</span> if (outChecksum == null) return false;<a name="line.543"></a>
+<span class="sourceLineNo">544</span><a name="line.544"></a>
+<span class="sourceLineNo">545</span> return inChecksum.equals(outChecksum);<a name="line.545"></a>
+<span class="sourceLineNo">546</span> }<a name="line.546"></a>
+<span class="sourceLineNo">547</span> }<a name="line.547"></a>
+<span class="sourceLineNo">548</span><a name="line.548"></a>
+<span class="sourceLineNo">549</span> // ==========================================================================<a name="line.549"></a>
+<span class="sourceLineNo">550</span> // Input Format<a name="line.550"></a>
+<span class="sourceLineNo">551</span> // ==========================================================================<a name="line.551"></a>
+<span class="sourceLineNo">552</span><a name="line.552"></a>
+<span class="sourceLineNo">553</span> /**<a name="line.553"></a>
+<span class="sourceLineNo">554</span> * Extract the list of files (HFiles/WALs) to copy using Map-Reduce.<a name="line.554"></a>
+<span class="sourceLineNo">555</span> * @return list of files referenced by the snapshot (pair of path and size)<a name="line.555"></a>
+<span class="sourceLineNo">556</span> */<a name="line.556"></a>
+<span class="sourceLineNo">557</span> private static List<Pair<SnapshotFileInfo, Long>> getSnapshotFiles(final Configuration conf,<a name="line.557"></a>
+<span class="sourceLineNo">558</span> final FileSystem fs, final Path snapshotDir) throws IOException {<a name="line.558"></a>
+<span class="sourceLineNo">559</span> SnapshotDescription snapshotDesc = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);<a name="line.559"></a>
+<span class="sourceLineNo">560</span><a name="line.560"></a>
+<span class="sourceLineNo">561</span> final List<Pair<SnapshotFileInfo, Long>> files = new ArrayList<>();<a name="line.561"></a>
+<span class="sourceLineNo">562</span> final TableName table = TableName.valueOf(snapshotDesc.getTable());<a name="line.562"></a>
+<span class="sourceLineNo">563</span><a name="line.563"></a>
+<span class="sourceLineNo">564</span> // Get snapshot files<a name="line.564"></a>
+<span class="sourceLineNo">565</span> LOG.info("Loading Snapshot '" + snapshotDesc.getName() + "' hfile list");<a name="line.565"></a>
+<span class="sourceLineNo">566</span> SnapshotReferenceUtil.visitReferencedFiles(conf, fs, snapshotDir, snapshotDesc,<a name="line.566"></a>
+<span class="sourceLineNo">567</span> new SnapshotReferenceUtil.SnapshotVisitor() {<a name="line.567"></a>
+<span class="sourceLineNo">568</span> @Override<a name="line.568"></a>
+<span class="sourceLineNo">569</span> public void storeFile(final HRegionInfo regionInfo, final String family,<a name="line.569"></a>
+<span class="sourceLineNo">570</span> final SnapshotRegionManifest.StoreFile storeFile) throws IOException {<a name="line.570"></a>
+<span class="sourceLineNo">571</span> // for storeFile.hasReference() case, copied as part of the manifest<a name="line.571"></a>
+<span class="sourceLineNo">572</span> if (!storeFile.hasReference()) {<a name="line.572"></a>
+<span class="sourceLineNo">573</span> String region = regionInfo.getEncodedName();<a name="line.573"></a>
+<span class="sourceLineNo">574</span> String hfile = storeFile.getName();<a name="line.574"></a>
+<span class="sourceLineNo">575</span> Path path = HFileLink.createPath(table, region, family, hfile);<a name="line.575"></a>
+<span class="sourceLineNo">576</span><a name="line.576"></a>
+<span class="sourceLineNo">577</span> SnapshotFileInfo fileInfo = SnapshotFileInfo.newBuilder()<a name="line.577"></a>
+<span class="sourceLineNo">578</span> .setType(SnapshotFileInfo.Type.HFILE)<a name="line.578"></a>
+<span class="sourceLineNo">579</span> .setHfile(path.toString())<a name="line.579"></a>
+<span class="sourceLineNo">580</span> .build();<a name="line.580"></a>
+<span class="sourceLineNo">581</span><a name="line.581"></a>
+<span class="sourceLineNo">582</span> long size;<a name="line.582"></a>
+<span class="sourceLineNo">583</span> if (storeFile.hasFileSize()) {<a name="line.583"></a>
+<span class="sourceLineNo">584</span> size = storeFile.getFileSize();<a name="line.584"></a>
+<span class="sourceLineNo">585</span> } else {<a name="line.585"></a>
+<span class="sourceLineNo">586</span> size = HFileLink.buildFromHFileLinkPattern(conf, path).getFileStatus(fs).getLen();<a name="line.586"></a>
+<span class="sourceLineNo">587</span> }<a name="line.587"></a>
+<span class="sourceLineNo">588</span> files.add(new Pair<>(fileInfo, size));<a name="line.588"></a>
+<span class="sourceLineNo">589</span> }<a name="line.589"></a>
+<span class="sourceLineNo">590</span> }<a name="line.590"></a>
+<span class="sourceLineNo">591</span> });<a name="line.591"></a>
+<span class="sourceLineNo">592</span><a name="line.592"></a>
+<span class="sourceLineNo">593</span> return files;<a name="line.593"></a>
+<span class="sourceLineNo">594</span> }<a name="line.594"></a>
+<span class="sourceLineNo">595</span><a name="line.595"></a>
+<span class="sourceLineNo">596</span> /**<a name="line.596"></a>
+<span class="sourceLineNo">597</span> * Given a list of file paths and sizes, create around ngroups in as balanced a way as possible.<a name="line.597"></a>
+<span class="sourceLineNo">598</span> * The groups created will have similar amounts of bytes.<a name="line.598"></a>
+<span class="sourceLineNo">599</span> * <p><a name="line.599"></a>
+<span class="sourceLineNo">600</span> * The algorithm used is pretty straightforward; the file list is sorted by size,<a name="line.600"></a>
+<span class="sourceLineNo">601</span> * and then each group fetch the bigger file available, iterating through groups<a name="line.601"></a>
+<span class="sourceLineNo">602</span> * alternating the direction.<a name="line.602"></a>
+<span class="sourceLineNo">603</span> */<a name="line.603"></a>
+<span class="sourceLineNo">604</span> static List<List<Pair<SnapshotFileInfo, Long>>> getBalancedSplits(<a name="line.604"></a>
+<span class="sourceLineNo">605</span> final List<Pair<SnapshotFileInfo, Long>> files, final int ngroups) {<a name="line.605"></a>
+<span class="sourceLineNo">606</span> // Sort files by size, from small to big<a name="line.606"></a>
+<span class="sourceLineNo">607</span> Collections.sort(files, new Comparator<Pair<SnapshotFileInfo, Long>>() {<a name="line.607"></a>
+<span class="sourceLineNo">608</span> public int compare(Pair<SnapshotFileInfo, Long> a, Pair<SnapshotFileInfo, Long> b) {<a name="line.608"></a>
+<span class="sourceLineNo">609</span> long r = a.getSecond() - b.getSecond();<a name="line.609"></a>
+<span class="sourceLineNo">610</span> return (r < 0) ? -1 : ((r > 0) ? 1 : 0);<a name="line.610"></a>
+<span class="sourceLineNo">611</span> }<a name="line.611"></a>
+<span class="sourceLineNo">612</span> });<a name="line.612"></a>
+<span class="sourceLineNo">613</span><a name="line.613"></a>
+<span class="sourceLineNo">614</span> // create balanced groups<a name="line.614"></a>
+<span class="sourceLineNo">615</span> List<List<Pair<SnapshotFileInfo, Long>>> fileGroups = new LinkedList<>();<a name="line.615"></a>
+<span class="sourceLineNo">616</span> long[] sizeGroups = new long[ngroups];<a name="line.616"></a>
+<span class="sourceLineNo">617</span> int hi = files.size() - 1;<a name="line.617"></a>
+<span class="sourceLineNo">618</span> int lo = 0;<a name="line.618"></a>
+<span class="sourceLineNo">619</span><a name="line.619"></a>
+<span class="sourceLineNo">620</span> List<Pair<SnapshotFileInfo, Long>> group;<a name="line.620"></a>
+<span class="sourceLineNo">621</span> int dir = 1;<a name="line.621"></a>
+<span class="sourceLineNo">622</span> int g = 0;<a name="line.622"></a>
+<span class="sourceLineNo">623</span><a name="line.623"></a>
+<span class="sourceLineNo">624</span> while (hi >= lo) {<a name="line.624"></a>
+<span class="sourceLineNo">625</span> if (g == fileGroups.size()) {<a name="line.625"></a>
+<span class="sourceLineNo">626</span> group = new LinkedList<>();<a name="line.626"></a>
+<span class="sourceLineNo">627</span> fileGroups.add(group);<a name="line.627"></a>
+<span class="sourceLineNo">628</span> } else {<a name="line.628"></a>
+<span class="sourceLineNo">629</span> group = fileGroups.get(g);<a name="line.629"></a>
+<span class="sourceLineNo">630</span> }<a name="line.630"></a>
+<span class="sourceLineNo">631</span><a name="line.631"></a>
+<span class="sourceLineNo">632</span> Pair<SnapshotFileInfo, Long> fileInfo = files.get(hi--);<a name="line.632"></a>
+<span class="sourceLineNo">633</span><a name="line.633"></a>
+<span class="sourceLineNo">634</span> // add the hi one<a name="line.634"></a>
+<span class="sourceLineNo">635</span> sizeGroups[g] += fileInfo.getSecond();<a name="line.635"></a>
+<span class="sourceLineNo">636</span> group.add(fileInfo);<a name="line.636"></a>
+<span class="sourceLineNo">637</span><a name="line.637"></a>
+<span class="sourceLineNo">638</span> // change direction when at the end or the beginning<a name="line.638"></a>
+<span class="sourceLineNo">639</span> g += dir;<a name="line.639"></a>
+<span class="sourceLineNo">640</span> if (g == ngroups) {<a name="line.640"></a>
+<span class="sourceLineNo">641</span> dir = -1;<a name="line.641"></a>
+<span class="sourceLineNo">642</span> g = ngroups - 1;<a name="line.642"></a>
+<span class="sourceLineNo">643</span> } else if (g < 0) {<a name="line.643"></a>
+<span class="sourceLineNo">644</span> dir = 1;<a name="line.644"></a>
+<span class="sourceLineNo">645</span> g = 0;<a name="line.645"></a>
+<span class="sourceLineNo">646</span> }<a name="line.646"></a>
+<span class="sourceLineNo">647</span> }<a name="line.647"></a>
+<span class="sourceLineNo">648</span><a name="line.648"></a>
+<span class="sourceLineNo">649</span> if (LOG.isDebugEnabled()) {<a name="line.649"></a>
+<span class="sourceLineNo">650</span> for (int i = 0; i < sizeGroups.length; ++i) {<a name="line.650"></a>
+<span class="sourceLineNo">651</span> LOG.debug("export split=" + i + " size=" + StringUtils.humanReadableInt(sizeGroups[i]));<a name="line.651"></a>
+<span class="sourceLineNo">652</span> }<a name="line.652"></a>
+<span class="sourceLineNo">653</span> }<a name="line.653"></a>
+<span class="sourceLineNo">654</span><a name="line.654"></a>
+<span class="sourceLineNo">655</span> return fileGroups;<a name="line.655"></a>
+<span class="sourceLineNo">656</span> }<a name="line.656"></a>
+<span class="sourceLineNo">657</span><a name="line.657"></a>
+<span class="sourceLineNo">658</span> private static class ExportSnapshotInputFormat extends InputFormat<BytesWritable, NullWritable> {<a name="line.658"></a>
+<span class="sourceLineNo">659</span> @Override<a name="line.659"></a>
+<span class="sourceLineNo">660</span> public RecordReader<BytesWritable, NullWritable> createRecordReader(InputSplit split,<a name="line.660"></a>
+<span class="sourceLineNo">661</span> TaskAttemptContext tac) throws IOException, InterruptedException {<a name="line.661"></a>
+<span class="sourceLineNo">662</span> return new ExportSnapshotRecordReader(((ExportSnapshotInputSplit)split).getSplitKeys());<a name="line.662"></a>
+<span class="sourceLineNo">663</span> }<a name="line.663"></a>
+<span class="sourceLineNo">664</span><a name="line.664"></a>
+<span class="sourceLineNo">665</span> @Override<a name="line.665"></a>
+<span class="sourceLineNo">666</span> public List<InputSplit> getSplits(JobContext context) throws IOException, InterruptedException {<a name="line.666"></a>
+<span class="sourceLineNo">667</span> Configuration conf = context.getConfiguration();<a name="line.667"></a>
+<span class="sourceLineNo">668</span> Path snapshotDir = new Path(conf.get(CONF_SNAPSHOT_DIR));<a name="line.668"></a>
+<span class="sourceLineNo">669</span> FileSystem fs = FileSystem.get(snapshotDir.toUri(), conf);<a name="line.669"></a>
+<span class="sourceLineNo">670</span><a name="line.670"></a>
+<span class="sourceLineNo">671</span> List<Pair<SnapshotFileInfo, Long>> snapshotFiles = getSnapshotFiles(conf, fs, snapshotDir);<a name="line.671"></a>
+<span class="sourceLineNo">672</span> int mappers = conf.getInt(CONF_NUM_SPLITS, 0);<a name="line.672"></a>
+<span class="sourceLineNo">673</span> if (mappers == 0 && snapshotFiles.size() > 0) {<a name="line.673"></a>
+<span class="sourceLineNo">674</span> mappers = 1 + (snapshotFiles.size() / conf.getInt(CONF_MAP_GROUP, 10));<a name="line.674"></a>
+<span class="sourceLineNo">675</span> mappers = Math.min(mappers, snapshotFiles.size());<a name="line.675"></a>
+<span class="sourceLineNo">676</span> conf.setInt(CONF_NUM_SPLITS, mappers);<a name="line.676"></a>
+<span class="sourceLineNo">677</span> conf.setInt(MR_NUM_MAPS, mappers);<a name="line.677"></a>
+<span class="sourceLineNo">678</span> }<a name="line.678"></a>
+<span class="sourceLineNo">679</span><a name="line.679"></a>
+<span class="sourceLineNo">680</span> List<List<Pair<SnapshotFileInfo, Long>>> groups = getBalancedSplits(snapshotFiles, mappers);<a name="line.680"></a>
+<span class="sourceLineNo">681</span> List<InputSplit> splits = new ArrayList(groups.size());<a name="line.681"></a>
+<span class="sourceLineNo">682</span> for (List<Pair<SnapshotFileInfo, Long>> files: groups) {<a name="line.682"></a>
+<span class="sourceLineNo">683</span> splits.add(new ExportSnapshotInputSplit(files));<a name="line.683"></a>
+<span class="sourceLineNo">684</span> }<a name="line.684"></a>
+<span class="sourceLineNo">685</span> return splits;<a name="line.685"></a>
+<span class="sourceLineNo">686</span> }<a name="line.686"></a>
+<span class="sourceLineNo">687</span><a name="line.687"></a>
+<span class="sourceLineNo">688</span> private static class ExportSnapshotInputSplit extends InputSplit implements Writable {<a name="line.688"></a>
+<span class="sourceLineNo">689</span> private List<Pair<BytesWritable, Long>> files;<a name="line.689"></a>
+<span class="sourceLineNo">690</span> private long length;<a name="line.690"></a>
+<span class="sourceLineNo">691</span><a name="line.691"></a>
+<span class="sourceLineNo">692</span> public ExportSnapshotInputSplit() {<a name="line.692"></a>
+<span class="sourceLineNo">693</span> this.files = null;<a name="line.693"></a>
+<span class="sourceLineNo">694</span> }<a name="line.694"></a>
+<span class="sourceLineNo">695</span><a name="line.695"></a>
+<span class="sourceLineNo">696</span> public ExportSnapshotInputSplit(final List<Pair<SnapshotFileInfo, Long>> snapshotFiles) {<a name="line.696"></a>
+<span class="sourceLineNo">697</span> this.files = new ArrayList(snapshotFiles.size());<a name="line.697"></a>
+<span class="sourceLineNo">698</span> for (Pair<SnapshotFileInfo, Long> fileInfo: snapshotFiles) {<a name="line.698"></a>
+<span class="sourceLineNo">699</span> this.files.add(new Pair<>(<a name="line.699"></a>
+<span class="sourceLineNo">700</span> new BytesWritable(fileInfo.getFirst().toByteArray()), fileInfo.getSecond()));<a name="line.700"></a>
+<span class="sourceLineNo">701</span> this.length += fileInfo.getSecond();<a name="line.701"></a>
+<span class="sourceLineNo">702</span> }<a name="line.702"></a>
+<span class="sourceLineNo">703</span> }<a name="line.703"></a>
+<span class="sourceLineNo">704</span><a name="line.704"></a>
+<span class="sourceLineNo">705</span> private List<Pair<BytesWritable, Long>> getSplitKeys() {<a name="line.705"></a>
+<span class="sourceLineNo">706</span> return files;<a name="line.706"></a>
+<span class="sourceLineNo">707</span> }<a name="line.707"></a>
+<span class="sourceLineNo">708</span><a name="line.708"></a>
+<span class="sourceLineNo">709</span> @Override<a name="line.709"></a>
+<span class="sourceLineNo">710</span> public long getLength() throws IOException, InterruptedException {<a name="line.710"></a>
+<span class="sourceLineNo">711</span> return length;<a name="line.711"></a>
+<span class="sourceLineNo">712</span> }<a name="line.712"></a>
+<span class="sourceLineNo">713</span><a name="line.713"></a>
+<span class="sourceLineNo">714</span> @Override<a name="line.714"></a>
+<span class="sourceLineNo">715</span> public String[] getLocations() throws IOException, InterruptedException {<a name="line.715"></a>
+<span class="sourceLineNo">716</span> return new String[] {};<a name="line.716"></a>
+<span class="sourceLineNo">717</span> }<a name="line.717"></a>
+<span class="sourceLineNo">718</span><a name="line.718"></a>
+<span class="sourceLineNo">719</span> @Override<a name="line.719"></a>
+<span class="sourceLineNo">720</span> public void readFields(DataInput in) throws IOException {<a name="line.720"></a>
+<span class="sourceLineNo">721</span> int count = in.readInt();<a name="line.721"></a>
+<span class="sourceLineNo">722</span> files = new ArrayList<>(count);<a name="line.722"></a>
+<span class="sourceLineNo">723</span> length = 0;<a name="line.723"></a>
+<span class="sourceLineNo">724</span> for (int i = 0; i < count; ++i) {<a name="line.724"></a>
+<span class="sourceLineNo">725</span> BytesWritable fileInfo = new BytesWritable();<a name="line.725"></a>
+<span class="sourceLineNo">726</span> fileInfo.readFields(in);<a name="line.726"></a>
+<span class="sourceLineNo">727</span> long size = in.readLong();<a name="line.727"></a>
+<span class="sourceLineNo">728</span> files.add(new Pair<>(fileInfo, size));<a name="line.728"></a>
+<span class="sourceLineNo">729</span> length += size;<a name="line.729"></a>
+<span class="sourceLineNo">730</span> }<a name="line.730"></a>
+<span class="sourceLineNo">731</span> }<a name="line.731"></a>
+<span class="sourceLineNo">732</span><a name="line.732"></a>
+<span class="sourceLineNo">733</span> @Override<a name="line.733"></a>
+<span class="sourceLineNo">734</span> public void write(DataOutput out) throws IOException {<a name="line.734"></a>
+<span class="sourceLineNo">735</span> out.writeInt(files.size());<a name="line.735"></a>
+<span class="sourceLineNo">736</span> for (final Pair<BytesWritable, Long> fileInfo: files) {<a name="line.736"></a>
+<span class="sourceLineNo">737</span> fileInfo.getFirst().write(out);<a name="line.737"></a>
+<span class="sourceLineNo">738</span> out.writeLong(fileInfo.getSecond());<a name="line.738"></a>
+<span class="sourceLineNo">739</span> }<a name="line.739"></a>
+<span class="sourceLineNo">740</span> }<a name="line.740"></a>
+<span class="sourceLineNo">741</span> }<a name="line.741"></a>
+<span class="sourceLineNo">742</span><a name="line.742"></a>
+<span class="sourceLineNo">743</span> private static class ExportSnapshotRecordReader<a name="line.743"></a>
+<span class="sourceLineNo">744</span> extends RecordReader<BytesWritable, NullWritable> {<a name="line.744"></a>
+<span class="sourceLineNo">745</span> private final List<Pair<BytesWritable, Long>> files;<a name="line.745"></a>
+<span class="sourceLineNo">746</span> private long totalSize = 0;<a name="line.746"></a>
+<span class="sourceLineNo">747</span> private long procSize = 0;<a name="line.747"></a>
+<span class="sourceLineNo">748</span> private int index = -1;<a name="line.748"></a>
+<span class="sourceLineNo">749</span><a name="line.749"></a>
+<span class="sourceLineNo">750</span> ExportSnapshotRecordReader(final List<Pair<BytesWritable, Long>> files) {<a name="line.750"></a>
+<span class="sourceLineNo">751</span> this.files = files;<a name="line.751"></a>
+<span class="sourceLineNo">752</span> for (Pair<BytesWritable, Long> fileInfo: files) {<a name="line.752"></a>
+<span class="sourceLineNo">753</span> totalSize += fileInfo.getSecond();<a name="line.753"></a>
+<span class="sourceLineNo">754</span> }<a name="line.754"></a>
+<span class="sourceLineNo">755</span> }<a name="line.755"></a>
+<span class="sourceLineNo">756</span><a name="line.756"></a>
+<span class="sourceLineNo">757</span> @Override<a name="line.757"></a>
+<span class="sourceLineNo">758</span> public void close() { }<a name="line.758"></a>
+<span class="sourceLineNo">759</span><a name="line.759"></a>
+<span class="sourceLineNo">760</span> @Override<a name="line.760"></a>
+<span class="sourceLineNo">761</span> public BytesWritable getCurrentKey() { return files.get(index).getFirst(); }<a name="line.761"></a>
+<span class="sourceLineNo">762</span><a name="line.762"></a>
+<span class="sourceLineNo">763</span> @Override<a name="line.763"></a>
+<span class="sourceLineNo">764</span> public NullWritable getCurrentValue() { return NullWritable.get(); }<a name="line.764"></a>
+<span class="sourceLineNo">765</span><a name="line.765"></a>
+<span class="sourceLineNo">766</span> @Override<a name="line.766"></a>
+<span class="sourceLineNo">767</span> public float getProgress() { return (float)procSize / totalSize; }<a name="line.767"></a>
+<span class="sourceLineNo">768</span><a name="line.768"></a>
+<span class="sourceLineNo">769</span> @Override<a name="line.769"></a>
+<span class="sourceLineNo">770</span> public void initialize(InputSplit split, TaskAttemptContext tac) { }<a name="line.770"></a>
+<span class="sourceLineNo">771</span><a name="line.771"></a>
+<span class="sourceLineNo">772</span> @Override<a name="line.772"></a>
+<span class="sourceLineNo">773</span> public boolean nextKeyValue() {<a name="line.773"></a>
+<span class="sourceLineNo">774</span> if (index >= 0) {<a name="line.774"></a>
+<span class="sourceLineNo">775</span> procSize += files.get(index).getSecond();<a name="line.775"></a>
+<span class="sourceLineNo">776</span> }<a name="line.776"></a>
+<span class="sourceLineNo">777</span> return(++index < files.size());<a name="line.777"></a>
+<span class="sourceLineNo">778</span> }<a name="line.778"></a>
+<span class="sourceLineNo">779</span> }<a name="line.779"></a>
+<span class="sourceLineNo">780</span> }<a name="line.780"></a>
+<span class="sourceLineNo">781</span><a name="line.781"></a>
+<span class="sourceLineNo">782</span> // ==========================================================================<a name="line.782"></a>
+<span class="sourceLineNo">783</span> // Tool<a name="line.783"></a>
+<span class="sourceLineNo">784</span> // ==========================================================================<a name="line.784"></a>
+<span class="sourceLineNo">785</span><a name="line.785"></a>
+<span class="sourceLineNo">786</span> /**<a name="line.786"></a>
+<span class="sourceLineNo">787</span> * Run Map-Reduce Job to perform the files copy.<a name="line.787"></a>
+<span class="sourceLineNo">788</span> */<a name="line.788"></a>
+<span class="sourceLineNo">789</span> private void runCopyJob(final Path inputRoot, final Path outputRoot,<a name="line.789"></a>
+<span class="sourceLineNo">790</span> final String snapshotName, final Path snapshotDir, final boolean verifyChecksum,<a name="line.790"></a>
+<span class="sourceLineNo">791</span> final String filesUser, final String filesGroup, final int filesMode,<a name="line.791"></a>
+<span class="sourceLineNo">792</span> final int mappers, final int bandwidthMB)<a name="line.792"></a>
+<span class="sourceLineNo">793</span> throws IOException, InterruptedException, ClassNotFoundException {<a name="line.793"></a>
+<span class="sourceLineNo">794</span> Configuration conf = getConf();<a name="line.794"></a>
+<span class="sourceLineNo">795</span> if (filesGroup != null) conf.set(CONF_FILES_GROUP, filesGroup);<a name="line.795"></a>
+<span class="sourceLineNo">796</span> if (filesUser != null) conf.set(CONF_FILES_USER, filesUser);<a name="line.796"></a>
+<span class="sourceLineNo">797</span> if (mappers > 0) {<a name="line.797"></a>
+<span class="sourceLineNo">798</span> conf.setInt(CONF_NUM_SPLITS, mappers);<a name="line.798"></a>
+<span class="sourceLineNo">799</span> conf.setInt(MR_NUM_MAPS, mappers);<a name="line.799"></a>
+<span class="sourceLineNo">800</span> }<a name="line.800"></a>
+<span class="sourceLineNo">801</span> conf.setInt(CONF_FILES_MODE, filesMode);<a name="line.801"></a>
+<span class="sourceLineNo">802</span> conf.setBoolean(CONF_CHECKSUM_VERIFY, verifyChecksum);<a name="line.802"></a>
+<span class="sourceLineNo">803</span> conf.set(CONF_OUTPUT_ROOT, outputRoot.toString());<a name="line.803"></a>
+<span class="sourceLineNo">804</span> conf.set(CONF_INPUT_ROOT, inputRoot.toString());<a name="line.804"></a>
+<span class="sourceLineNo">805</span> conf.setInt(CONF_BANDWIDTH_MB, bandwidthMB);<a name="line.805"></a>
+<span class="sourceLineNo">806</span> conf.set(CONF_SNAPSHOT_NAME, snapshotName);<a name="line.806"></a>
+<span class="sourceLineNo">807</span> conf.set(CONF_SNAPSHOT_DIR, snapshotDir.toString());<a name="line.807"></a>
+<span class="sourceLineNo">808</span><a name="line.808"></a>
+<span class="sourceLineNo">809</span> Job job = new Job(conf);<a name="line.809"></a>
+<span class="sourceLineNo">810</span> job.setJobName("ExportSnapshot-" + snapshotName);<a name="line.810"></a>
+<span class="sourceLineNo">811</span> job.setJarByClass(ExportSnapshot.class);<a name="line.811"></a>
+<span class="sourceLineNo">812</span> TableMapReduceUtil.addDependencyJars(job);<a name="line.812"></a>
+<span class="sourceLineNo">813</span> job.setMapperClass(ExportMapper.class);<a name="line.813"></a>
+<span class="sourceLineNo">814</span> job.setInputFormatClass(ExportSnapshotInputFormat.class);<a name="line.814"></a>
+<span class="sourceLineNo">815</span> job.setOutputFormatClass(NullOutputFormat.class);<a name="line.815"></a>
+<span class="sourceLineNo">816</span> job.setMapSpeculativeExecution(false);<a name="line.816"></a>
+<span class="sourceLineNo">817</span> job.setNumReduceTasks(0);<a name="line.817"></a>
+<span class="sourceLineNo">818</span><a name="line.818"></a>
+<span class="sourceLineNo">819</span> // Acquire the delegation Tokens<a name="line.819"></a>
+<span class="sourceLineNo">820</span> Configuration srcConf = HBaseConfiguration.createClusterConf(conf, null, CONF_SOURCE_PREFIX);<a name="line.820"></a>
+<span class="sourceLineNo">821</span> TokenCache.obtainTokensForNamenodes(job.getCredentials(),<a name="line.821"></a>
+<span class="sourceLineNo">822</span> new Path[] { inputRoot }, srcConf);<a name="line.822"></a>
+<span class="sourceLineNo">823</span> Configuration destConf = HBaseConfiguration.createClusterConf(conf, null, CONF_DEST_PREFIX);<a name="line.823"></a>
+<span class="sourceLineNo">824</span> TokenCache.obtainTokensForNamenodes(job.getCredentials(),<a name="line.824"></a>
+<span class="sourceLineNo">825</span> new Path[] { outputRoot }, destConf);<a name="line.825"></a>
+<span class="sourceLineNo">826</span><a name="line.826"></a>
+<span class="sourceLineNo">827</span> // Run the MR Job<a name="line.827"></a>
+<span class="sourceLineNo">828</span> if (!job.waitForCompletion(true)) {<a name="line.828"></a>
+<span class="sourceLineNo">829</span> // TODO: Replace the fixed string with job.getStatus().getFailureInfo()<a name="line.829"></a>
+<span class="sourceLineNo">830</span> // when it will be available on all the supported versions.<a name="line.830"></a>
+<span class="sourceLineNo">831</span> throw new ExportSnapshotException("Copy Files Map-Reduce Job failed");<a name="line.831"></a>
+<span class="sourceLineNo">832</span> }<a name="line.832"></a>
+<span class="sourceLineNo">833</span> }<a name="line.833"></a>
+<span class="sourceLineNo">834</span><a name="line.834"></a>
+<span class="sourceLineNo">835</span> private void verifySnapshot(final Configuration baseConf,<a name="line.835"></a>
+<span class="sourceLineNo">836</span> final FileSystem fs, final Path rootDir, final Path snapshotDir) throws IOException {<a name="line.836"></a>
+<span class="sourceLineNo">837</span> // Update the conf with the current root dir, since may be a different cluster<a name="line.837"></a>
+<span class="sourceLineNo">838</span> Configuration conf = new Configuration(baseConf);<a name="line.838"></a>
+<span class="sourceLineNo">839</span> FSUtils.setRootDir(conf, rootDir);<a name="line.839"></a>
+<span class="sourceLineNo">840</span> FSUtils.setFsDefault(conf, FSUtils.getRootDir(conf));<a name="line.840"></a>
+<span class="sourceLineNo">841</span> SnapshotDescription snapshotDesc = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);<a name="line.841"></a>
+<span class="sourceLineNo">842</span> SnapshotReferenceUtil.verifySnapshot(conf, fs, snapshotDir, snapshotDesc);<a name="line.842"></a>
+<span class="sourceLineNo">843</span> }<a name="line.843"></a>
+<span class="sourceLineNo">844</span><a name="line.844"></a>
+<span class="sourceLineNo">845</span> /**<a name="line.845"></a>
+<span class="sourceLineNo">846</span> * Set path ownership.<a name="line.846"></a>
+<span class="sourceLineNo">847</span> */<a name="line.847"></a>
+<span class="sourceLineNo">848</span> private void setOwner(final FileSystem fs, final Path path, final String user,<a name="line.848"></a>
+<span class="sourceLineNo">849</span> final String group, final boolean recursive) throws IOException {<a name="line.849"></a>
+<span class="sourceLineNo">850</span> if (user != null || group != null) {<a name="line.850"></a>
+<span class="sourceLineNo">851</span> if (recursive && fs.isDirectory(path)) {<a name="line.851"></a>
+<span class="sourceLineNo">852</span> for (FileStatus child : fs.listStatus(path)) {<a name="line.852"></a>
+<span class="sourceLineNo">853</span> setOwner(fs, child.getPath(), user, group, recursive);<a name="line.853"></a>
+<span class="sourceLineNo">854</span> }<a name="line.854"></a>
+<span class="sourceLineNo">855</span> }<a name="line.855"></a>
+<span class="sourceLineNo">856</span> fs.setOwner(path, user, group);<a name="line.856"></a>
+<span class="sourceLineNo">857</span> }<a name="line.857"></a>
+<span class="sourceLineNo">858</span> }<a name="line.858"></a>
+<span class="sourceLineNo">859</span><a name="line.859"></a>
+<span class="sourceLineNo">860</span> /**<a name="line.860"></a>
+<span class="sourceLineNo">861</span> * Set path permission.<a name="line.861"></a>
+<span class="sourceLineNo">862</span> */<a name="line.862"></a>
+<span class="sourceLineNo">863</span> private void setPermission(final FileSystem fs, final Path path, final short filesMode,<a name="line.863"></
<TRUNCATED>