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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.snapshot;</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.io.InputStream;</span>
<span class="source-line-no">022</span><span id="line-22">import java.io.OutputStream;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.ArrayList;</span>
<span class="source-line-no">024</span><span id="line-24">import java.util.Arrays;</span>
<span class="source-line-no">025</span><span id="line-25">import java.util.Collections;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.HashMap;</span>
<span class="source-line-no">027</span><span id="line-27">import java.util.HashSet;</span>
<span class="source-line-no">028</span><span id="line-28">import java.util.LinkedList;</span>
<span class="source-line-no">029</span><span id="line-29">import java.util.List;</span>
<span class="source-line-no">030</span><span id="line-30">import java.util.Map;</span>
<span class="source-line-no">031</span><span id="line-31">import java.util.Map.Entry;</span>
<span class="source-line-no">032</span><span id="line-32">import java.util.Set;</span>
<span class="source-line-no">033</span><span id="line-33">import java.util.TreeMap;</span>
<span class="source-line-no">034</span><span id="line-34">import java.util.concurrent.ThreadPoolExecutor;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.fs.FileStatus;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.fs.FileSystem;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.fs.Path;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.MetaTableAccessor;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.backup.HFileArchiver;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.client.Connection;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.client.ConnectionFactory;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.client.RegionInfo;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.client.RegionInfoBuilder;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.client.TableDescriptor;</span>
<span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;</span>
<span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.io.HFileLink;</span>
<span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.io.Reference;</span>
<span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.mob.MobUtils;</span>
<span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.monitoring.MonitoredTask;</span>
<span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.monitoring.TaskMonitor;</span>
<span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.regionserver.HRegion;</span>
<span class="source-line-no">054</span><span id="line-54">import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;</span>
<span class="source-line-no">055</span><span id="line-55">import org.apache.hadoop.hbase.regionserver.StoreContext;</span>
<span class="source-line-no">056</span><span id="line-56">import org.apache.hadoop.hbase.regionserver.StoreFileInfo;</span>
<span class="source-line-no">057</span><span id="line-57">import org.apache.hadoop.hbase.regionserver.StoreUtils;</span>
<span class="source-line-no">058</span><span id="line-58">import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTracker;</span>
<span class="source-line-no">059</span><span id="line-59">import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;</span>
<span class="source-line-no">060</span><span id="line-60">import org.apache.hadoop.hbase.security.access.AccessControlClient;</span>
<span class="source-line-no">061</span><span id="line-61">import org.apache.hadoop.hbase.security.access.Permission;</span>
<span class="source-line-no">062</span><span id="line-62">import org.apache.hadoop.hbase.security.access.ShadedAccessControlUtil;</span>
<span class="source-line-no">063</span><span id="line-63">import org.apache.hadoop.hbase.security.access.TablePermission;</span>
<span class="source-line-no">064</span><span id="line-64">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">065</span><span id="line-65">import org.apache.hadoop.hbase.util.CommonFSUtils;</span>
<span class="source-line-no">066</span><span id="line-66">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span>
<span class="source-line-no">067</span><span id="line-67">import org.apache.hadoop.hbase.util.FSUtils;</span>
<span class="source-line-no">068</span><span id="line-68">import org.apache.hadoop.hbase.util.ModifyRegionUtils;</span>
<span class="source-line-no">069</span><span id="line-69">import org.apache.hadoop.hbase.util.Pair;</span>
<span class="source-line-no">070</span><span id="line-70">import org.apache.hadoop.io.IOUtils;</span>
<span class="source-line-no">071</span><span id="line-71">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">072</span><span id="line-72">import org.slf4j.Logger;</span>
<span class="source-line-no">073</span><span id="line-73">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">074</span><span id="line-74"></span>
<span class="source-line-no">075</span><span id="line-75">import org.apache.hbase.thirdparty.com.google.common.collect.ListMultimap;</span>
<span class="source-line-no">076</span><span id="line-76"></span>
<span class="source-line-no">077</span><span id="line-77">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span>
<span class="source-line-no">078</span><span id="line-78">import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;</span>
<span class="source-line-no">079</span><span id="line-79">import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest;</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"> * Helper to Restore/Clone a Snapshot</span>
<span class="source-line-no">083</span><span id="line-83"> * &lt;p&gt;</span>
<span class="source-line-no">084</span><span id="line-84"> * The helper assumes that a table is already created, and by calling restore() the content present</span>
<span class="source-line-no">085</span><span id="line-85"> * in the snapshot will be restored as the new content of the table.</span>
<span class="source-line-no">086</span><span id="line-86"> * &lt;p&gt;</span>
<span class="source-line-no">087</span><span id="line-87"> * Clone from Snapshot: If the target table is empty, the restore operation is just a "clone</span>
<span class="source-line-no">088</span><span id="line-88"> * operation", where the only operations are:</span>
<span class="source-line-no">089</span><span id="line-89"> * &lt;ul&gt;</span>
<span class="source-line-no">090</span><span id="line-90"> * &lt;li&gt;for each region in the snapshot create a new region (note that the region will have a</span>
<span class="source-line-no">091</span><span id="line-91"> * different name, since the encoding contains the table name)</span>
<span class="source-line-no">092</span><span id="line-92"> * &lt;li&gt;for each file in the region create a new HFileLink to point to the original file.</span>
<span class="source-line-no">093</span><span id="line-93"> * &lt;li&gt;restore the logs, if any</span>
<span class="source-line-no">094</span><span id="line-94"> * &lt;/ul&gt;</span>
<span class="source-line-no">095</span><span id="line-95"> * &lt;p&gt;</span>
<span class="source-line-no">096</span><span id="line-96"> * Restore from Snapshot:</span>
<span class="source-line-no">097</span><span id="line-97"> * &lt;ul&gt;</span>
<span class="source-line-no">098</span><span id="line-98"> * &lt;li&gt;for each region in the table verify which are available in the snapshot and which are not</span>
<span class="source-line-no">099</span><span id="line-99"> * &lt;ul&gt;</span>
<span class="source-line-no">100</span><span id="line-100"> * &lt;li&gt;if the region is not present in the snapshot, remove it.</span>
<span class="source-line-no">101</span><span id="line-101"> * &lt;li&gt;if the region is present in the snapshot</span>
<span class="source-line-no">102</span><span id="line-102"> * &lt;ul&gt;</span>
<span class="source-line-no">103</span><span id="line-103"> * &lt;li&gt;for each file in the table region verify which are available in the snapshot</span>
<span class="source-line-no">104</span><span id="line-104"> * &lt;ul&gt;</span>
<span class="source-line-no">105</span><span id="line-105"> * &lt;li&gt;if the hfile is not present in the snapshot, remove it</span>
<span class="source-line-no">106</span><span id="line-106"> * &lt;li&gt;if the hfile is present, keep it (nothing to do)</span>
<span class="source-line-no">107</span><span id="line-107"> * &lt;/ul&gt;</span>
<span class="source-line-no">108</span><span id="line-108"> * &lt;li&gt;for each file in the snapshot region but not in the table</span>
<span class="source-line-no">109</span><span id="line-109"> * &lt;ul&gt;</span>
<span class="source-line-no">110</span><span id="line-110"> * &lt;li&gt;create a new HFileLink that point to the original file</span>
<span class="source-line-no">111</span><span id="line-111"> * &lt;/ul&gt;</span>
<span class="source-line-no">112</span><span id="line-112"> * &lt;/ul&gt;</span>
<span class="source-line-no">113</span><span id="line-113"> * &lt;/ul&gt;</span>
<span class="source-line-no">114</span><span id="line-114"> * &lt;li&gt;for each region in the snapshot not present in the current table state</span>
<span class="source-line-no">115</span><span id="line-115"> * &lt;ul&gt;</span>
<span class="source-line-no">116</span><span id="line-116"> * &lt;li&gt;create a new region and for each file in the region create a new HFileLink (This is the same</span>
<span class="source-line-no">117</span><span id="line-117"> * as the clone operation)</span>
<span class="source-line-no">118</span><span id="line-118"> * &lt;/ul&gt;</span>
<span class="source-line-no">119</span><span id="line-119"> * &lt;li&gt;restore the logs, if any</span>
<span class="source-line-no">120</span><span id="line-120"> * &lt;/ul&gt;</span>
<span class="source-line-no">121</span><span id="line-121"> */</span>
<span class="source-line-no">122</span><span id="line-122">@InterfaceAudience.Private</span>
<span class="source-line-no">123</span><span id="line-123">public class RestoreSnapshotHelper {</span>
<span class="source-line-no">124</span><span id="line-124"> private static final Logger LOG = LoggerFactory.getLogger(RestoreSnapshotHelper.class);</span>
<span class="source-line-no">125</span><span id="line-125"></span>
<span class="source-line-no">126</span><span id="line-126"> private final Map&lt;byte[], byte[]&gt; regionsMap = new TreeMap&lt;&gt;(Bytes.BYTES_COMPARATOR);</span>
<span class="source-line-no">127</span><span id="line-127"></span>
<span class="source-line-no">128</span><span id="line-128"> private final Map&lt;String, Pair&lt;String, String&gt;&gt; parentsMap = new HashMap&lt;&gt;();</span>
<span class="source-line-no">129</span><span id="line-129"></span>
<span class="source-line-no">130</span><span id="line-130"> private final ForeignExceptionDispatcher monitor;</span>
<span class="source-line-no">131</span><span id="line-131"> private final MonitoredTask status;</span>
<span class="source-line-no">132</span><span id="line-132"></span>
<span class="source-line-no">133</span><span id="line-133"> private final SnapshotManifest snapshotManifest;</span>
<span class="source-line-no">134</span><span id="line-134"> private final SnapshotDescription snapshotDesc;</span>
<span class="source-line-no">135</span><span id="line-135"> private final TableName snapshotTable;</span>
<span class="source-line-no">136</span><span id="line-136"></span>
<span class="source-line-no">137</span><span id="line-137"> private final TableDescriptor tableDesc;</span>
<span class="source-line-no">138</span><span id="line-138"> private final Path rootDir;</span>
<span class="source-line-no">139</span><span id="line-139"> private final Path tableDir;</span>
<span class="source-line-no">140</span><span id="line-140"></span>
<span class="source-line-no">141</span><span id="line-141"> private final Configuration conf;</span>
<span class="source-line-no">142</span><span id="line-142"> private final FileSystem fs;</span>
<span class="source-line-no">143</span><span id="line-143"> private final boolean createBackRefs;</span>
<span class="source-line-no">144</span><span id="line-144"></span>
<span class="source-line-no">145</span><span id="line-145"> public RestoreSnapshotHelper(final Configuration conf, final FileSystem fs,</span>
<span class="source-line-no">146</span><span id="line-146"> final SnapshotManifest manifest, final TableDescriptor tableDescriptor, final Path rootDir,</span>
<span class="source-line-no">147</span><span id="line-147"> final ForeignExceptionDispatcher monitor, final MonitoredTask status) {</span>
<span class="source-line-no">148</span><span id="line-148"> this(conf, fs, manifest, tableDescriptor, rootDir, monitor, status, true);</span>
<span class="source-line-no">149</span><span id="line-149"> }</span>
<span class="source-line-no">150</span><span id="line-150"></span>
<span class="source-line-no">151</span><span id="line-151"> public RestoreSnapshotHelper(final Configuration conf, final FileSystem fs,</span>
<span class="source-line-no">152</span><span id="line-152"> final SnapshotManifest manifest, final TableDescriptor tableDescriptor, final Path rootDir,</span>
<span class="source-line-no">153</span><span id="line-153"> final ForeignExceptionDispatcher monitor, final MonitoredTask status,</span>
<span class="source-line-no">154</span><span id="line-154"> final boolean createBackRefs) {</span>
<span class="source-line-no">155</span><span id="line-155"> this.fs = fs;</span>
<span class="source-line-no">156</span><span id="line-156"> this.conf = conf;</span>
<span class="source-line-no">157</span><span id="line-157"> this.snapshotManifest = manifest;</span>
<span class="source-line-no">158</span><span id="line-158"> this.snapshotDesc = manifest.getSnapshotDescription();</span>
<span class="source-line-no">159</span><span id="line-159"> this.snapshotTable = TableName.valueOf(snapshotDesc.getTable());</span>
<span class="source-line-no">160</span><span id="line-160"> this.tableDesc = tableDescriptor;</span>
<span class="source-line-no">161</span><span id="line-161"> this.rootDir = rootDir;</span>
<span class="source-line-no">162</span><span id="line-162"> this.tableDir = CommonFSUtils.getTableDir(rootDir, tableDesc.getTableName());</span>
<span class="source-line-no">163</span><span id="line-163"> this.monitor = monitor;</span>
<span class="source-line-no">164</span><span id="line-164"> this.status = status;</span>
<span class="source-line-no">165</span><span id="line-165"> this.createBackRefs = createBackRefs;</span>
<span class="source-line-no">166</span><span id="line-166"> }</span>
<span class="source-line-no">167</span><span id="line-167"></span>
<span class="source-line-no">168</span><span id="line-168"> /**</span>
<span class="source-line-no">169</span><span id="line-169"> * Restore the on-disk table to a specified snapshot state.</span>
<span class="source-line-no">170</span><span id="line-170"> * @return the set of regions touched by the restore operation</span>
<span class="source-line-no">171</span><span id="line-171"> */</span>
<span class="source-line-no">172</span><span id="line-172"> public RestoreMetaChanges restoreHdfsRegions() throws IOException {</span>
<span class="source-line-no">173</span><span id="line-173"> ThreadPoolExecutor exec = SnapshotManifest.createExecutor(conf, "RestoreSnapshot");</span>
<span class="source-line-no">174</span><span id="line-174"> try {</span>
<span class="source-line-no">175</span><span id="line-175"> return restoreHdfsRegions(exec);</span>
<span class="source-line-no">176</span><span id="line-176"> } finally {</span>
<span class="source-line-no">177</span><span id="line-177"> exec.shutdown();</span>
<span class="source-line-no">178</span><span id="line-178"> }</span>
<span class="source-line-no">179</span><span id="line-179"> }</span>
<span class="source-line-no">180</span><span id="line-180"></span>
<span class="source-line-no">181</span><span id="line-181"> private RestoreMetaChanges restoreHdfsRegions(final ThreadPoolExecutor exec) throws IOException {</span>
<span class="source-line-no">182</span><span id="line-182"> LOG.info("starting restore table regions using snapshot=" + snapshotDesc);</span>
<span class="source-line-no">183</span><span id="line-183"></span>
<span class="source-line-no">184</span><span id="line-184"> Map&lt;String, SnapshotRegionManifest&gt; regionManifests = snapshotManifest.getRegionManifestsMap();</span>
<span class="source-line-no">185</span><span id="line-185"> if (regionManifests == null) {</span>
<span class="source-line-no">186</span><span id="line-186"> LOG.warn("Nothing to restore. Snapshot " + snapshotDesc + " looks empty");</span>
<span class="source-line-no">187</span><span id="line-187"> return null;</span>
<span class="source-line-no">188</span><span id="line-188"> }</span>
<span class="source-line-no">189</span><span id="line-189"></span>
<span class="source-line-no">190</span><span id="line-190"> RestoreMetaChanges metaChanges = new RestoreMetaChanges(tableDesc, parentsMap);</span>
<span class="source-line-no">191</span><span id="line-191"></span>
<span class="source-line-no">192</span><span id="line-192"> // Take a copy of the manifest.keySet() since we are going to modify</span>
<span class="source-line-no">193</span><span id="line-193"> // this instance, by removing the regions already present in the restore dir.</span>
<span class="source-line-no">194</span><span id="line-194"> Set&lt;String&gt; regionNames = new HashSet&lt;&gt;(regionManifests.keySet());</span>
<span class="source-line-no">195</span><span id="line-195"></span>
<span class="source-line-no">196</span><span id="line-196"> List&lt;RegionInfo&gt; tableRegions = getTableRegions();</span>
<span class="source-line-no">197</span><span id="line-197"></span>
<span class="source-line-no">198</span><span id="line-198"> RegionInfo mobRegion =</span>
<span class="source-line-no">199</span><span id="line-199"> MobUtils.getMobRegionInfo(snapshotManifest.getTableDescriptor().getTableName());</span>
<span class="source-line-no">200</span><span id="line-200"> if (tableRegions != null) {</span>
<span class="source-line-no">201</span><span id="line-201"> // restore the mob region in case</span>
<span class="source-line-no">202</span><span id="line-202"> if (regionNames.contains(mobRegion.getEncodedName())) {</span>
<span class="source-line-no">203</span><span id="line-203"> monitor.rethrowException();</span>
<span class="source-line-no">204</span><span id="line-204"> status.setStatus("Restoring mob region...");</span>
<span class="source-line-no">205</span><span id="line-205"> List&lt;RegionInfo&gt; mobRegions = new ArrayList&lt;&gt;(1);</span>
<span class="source-line-no">206</span><span id="line-206"> mobRegions.add(mobRegion);</span>
<span class="source-line-no">207</span><span id="line-207"> restoreHdfsMobRegions(exec, regionManifests, mobRegions);</span>
<span class="source-line-no">208</span><span id="line-208"> regionNames.remove(mobRegion.getEncodedName());</span>
<span class="source-line-no">209</span><span id="line-209"> status.setStatus("Finished restoring mob region.");</span>
<span class="source-line-no">210</span><span id="line-210"> }</span>
<span class="source-line-no">211</span><span id="line-211"> }</span>
<span class="source-line-no">212</span><span id="line-212"> if (regionNames.contains(mobRegion.getEncodedName())) {</span>
<span class="source-line-no">213</span><span id="line-213"> // add the mob region</span>
<span class="source-line-no">214</span><span id="line-214"> monitor.rethrowException();</span>
<span class="source-line-no">215</span><span id="line-215"> status.setStatus("Cloning mob region...");</span>
<span class="source-line-no">216</span><span id="line-216"> cloneHdfsMobRegion(regionManifests, mobRegion);</span>
<span class="source-line-no">217</span><span id="line-217"> regionNames.remove(mobRegion.getEncodedName());</span>
<span class="source-line-no">218</span><span id="line-218"> status.setStatus("Finished cloning mob region.");</span>
<span class="source-line-no">219</span><span id="line-219"> }</span>
<span class="source-line-no">220</span><span id="line-220"></span>
<span class="source-line-no">221</span><span id="line-221"> // Identify which region are still available and which not.</span>
<span class="source-line-no">222</span><span id="line-222"> // NOTE: we rely upon the region name as: "table name, start key, end key"</span>
<span class="source-line-no">223</span><span id="line-223"> if (tableRegions != null) {</span>
<span class="source-line-no">224</span><span id="line-224"> monitor.rethrowException();</span>
<span class="source-line-no">225</span><span id="line-225"> for (RegionInfo regionInfo : tableRegions) {</span>
<span class="source-line-no">226</span><span id="line-226"> String regionName = regionInfo.getEncodedName();</span>
<span class="source-line-no">227</span><span id="line-227"> if (regionNames.contains(regionName)) {</span>
<span class="source-line-no">228</span><span id="line-228"> LOG.info("region to restore: " + regionName);</span>
<span class="source-line-no">229</span><span id="line-229"> regionNames.remove(regionName);</span>
<span class="source-line-no">230</span><span id="line-230"> metaChanges.addRegionToRestore(</span>
<span class="source-line-no">231</span><span id="line-231"> ProtobufUtil.toRegionInfo(regionManifests.get(regionName).getRegionInfo()));</span>
<span class="source-line-no">232</span><span id="line-232"> } else {</span>
<span class="source-line-no">233</span><span id="line-233"> LOG.info("region to remove: " + regionName);</span>
<span class="source-line-no">234</span><span id="line-234"> metaChanges.addRegionToRemove(regionInfo);</span>
<span class="source-line-no">235</span><span id="line-235"> }</span>
<span class="source-line-no">236</span><span id="line-236"> }</span>
<span class="source-line-no">237</span><span id="line-237"> }</span>
<span class="source-line-no">238</span><span id="line-238"></span>
<span class="source-line-no">239</span><span id="line-239"> // Regions to Add: present in the snapshot but not in the current table</span>
<span class="source-line-no">240</span><span id="line-240"> List&lt;RegionInfo&gt; regionsToAdd = new ArrayList&lt;&gt;(regionNames.size());</span>
<span class="source-line-no">241</span><span id="line-241"> if (regionNames.size() &gt; 0) {</span>
<span class="source-line-no">242</span><span id="line-242"> monitor.rethrowException();</span>
<span class="source-line-no">243</span><span id="line-243"> for (String regionName : regionNames) {</span>
<span class="source-line-no">244</span><span id="line-244"> LOG.info("region to add: " + regionName);</span>
<span class="source-line-no">245</span><span id="line-245"> regionsToAdd</span>
<span class="source-line-no">246</span><span id="line-246"> .add(ProtobufUtil.toRegionInfo(regionManifests.get(regionName).getRegionInfo()));</span>
<span class="source-line-no">247</span><span id="line-247"> }</span>
<span class="source-line-no">248</span><span id="line-248"> }</span>
<span class="source-line-no">249</span><span id="line-249"></span>
<span class="source-line-no">250</span><span id="line-250"> // Create new regions cloning from the snapshot</span>
<span class="source-line-no">251</span><span id="line-251"> // HBASE-19980: We need to call cloneHdfsRegions() before restoreHdfsRegions() because</span>
<span class="source-line-no">252</span><span id="line-252"> // regionsMap is constructed in cloneHdfsRegions() and it can be used in restoreHdfsRegions().</span>
<span class="source-line-no">253</span><span id="line-253"> monitor.rethrowException();</span>
<span class="source-line-no">254</span><span id="line-254"> status.setStatus("Cloning regions...");</span>
<span class="source-line-no">255</span><span id="line-255"> RegionInfo[] clonedRegions = cloneHdfsRegions(exec, regionManifests, regionsToAdd);</span>
<span class="source-line-no">256</span><span id="line-256"> metaChanges.setNewRegions(clonedRegions);</span>
<span class="source-line-no">257</span><span id="line-257"> status.setStatus("Finished cloning regions.");</span>
<span class="source-line-no">258</span><span id="line-258"></span>
<span class="source-line-no">259</span><span id="line-259"> // Restore regions using the snapshot data</span>
<span class="source-line-no">260</span><span id="line-260"> monitor.rethrowException();</span>
<span class="source-line-no">261</span><span id="line-261"> status.setStatus("Restoring table regions...");</span>
<span class="source-line-no">262</span><span id="line-262"> restoreHdfsRegions(exec, regionManifests, metaChanges.getRegionsToRestore());</span>
<span class="source-line-no">263</span><span id="line-263"> status.setStatus("Finished restoring all table regions.");</span>
<span class="source-line-no">264</span><span id="line-264"></span>
<span class="source-line-no">265</span><span id="line-265"> // Remove regions from the current table</span>
<span class="source-line-no">266</span><span id="line-266"> monitor.rethrowException();</span>
<span class="source-line-no">267</span><span id="line-267"> status.setStatus("Starting to delete excess regions from table");</span>
<span class="source-line-no">268</span><span id="line-268"> removeHdfsRegions(exec, metaChanges.getRegionsToRemove());</span>
<span class="source-line-no">269</span><span id="line-269"> status.setStatus("Finished deleting excess regions from table.");</span>
<span class="source-line-no">270</span><span id="line-270"></span>
<span class="source-line-no">271</span><span id="line-271"> LOG.info("finishing restore table regions using snapshot=" + snapshotDesc);</span>
<span class="source-line-no">272</span><span id="line-272"></span>
<span class="source-line-no">273</span><span id="line-273"> return metaChanges;</span>
<span class="source-line-no">274</span><span id="line-274"> }</span>
<span class="source-line-no">275</span><span id="line-275"></span>
<span class="source-line-no">276</span><span id="line-276"> /**</span>
<span class="source-line-no">277</span><span id="line-277"> * Describe the set of operations needed to update hbase:meta after restore.</span>
<span class="source-line-no">278</span><span id="line-278"> */</span>
<span class="source-line-no">279</span><span id="line-279"> public static class RestoreMetaChanges {</span>
<span class="source-line-no">280</span><span id="line-280"> private final Map&lt;String, Pair&lt;String, String&gt;&gt; parentsMap;</span>
<span class="source-line-no">281</span><span id="line-281"> private final TableDescriptor htd;</span>
<span class="source-line-no">282</span><span id="line-282"></span>
<span class="source-line-no">283</span><span id="line-283"> private List&lt;RegionInfo&gt; regionsToRestore = null;</span>
<span class="source-line-no">284</span><span id="line-284"> private List&lt;RegionInfo&gt; regionsToRemove = null;</span>
<span class="source-line-no">285</span><span id="line-285"> private List&lt;RegionInfo&gt; regionsToAdd = null;</span>
<span class="source-line-no">286</span><span id="line-286"></span>
<span class="source-line-no">287</span><span id="line-287"> public RestoreMetaChanges(TableDescriptor htd, Map&lt;String, Pair&lt;String, String&gt;&gt; parentsMap) {</span>
<span class="source-line-no">288</span><span id="line-288"> this.parentsMap = parentsMap;</span>
<span class="source-line-no">289</span><span id="line-289"> this.htd = htd;</span>
<span class="source-line-no">290</span><span id="line-290"> }</span>
<span class="source-line-no">291</span><span id="line-291"></span>
<span class="source-line-no">292</span><span id="line-292"> public TableDescriptor getTableDescriptor() {</span>
<span class="source-line-no">293</span><span id="line-293"> return htd;</span>
<span class="source-line-no">294</span><span id="line-294"> }</span>
<span class="source-line-no">295</span><span id="line-295"></span>
<span class="source-line-no">296</span><span id="line-296"> /**</span>
<span class="source-line-no">297</span><span id="line-297"> * Returns the map of parent-children_pair.</span>
<span class="source-line-no">298</span><span id="line-298"> * @return the map</span>
<span class="source-line-no">299</span><span id="line-299"> */</span>
<span class="source-line-no">300</span><span id="line-300"> public Map&lt;String, Pair&lt;String, String&gt;&gt; getParentToChildrenPairMap() {</span>
<span class="source-line-no">301</span><span id="line-301"> return this.parentsMap;</span>
<span class="source-line-no">302</span><span id="line-302"> }</span>
<span class="source-line-no">303</span><span id="line-303"></span>
<span class="source-line-no">304</span><span id="line-304"> /** Returns true if there're new regions */</span>
<span class="source-line-no">305</span><span id="line-305"> public boolean hasRegionsToAdd() {</span>
<span class="source-line-no">306</span><span id="line-306"> return this.regionsToAdd != null &amp;&amp; this.regionsToAdd.size() &gt; 0;</span>
<span class="source-line-no">307</span><span id="line-307"> }</span>
<span class="source-line-no">308</span><span id="line-308"></span>
<span class="source-line-no">309</span><span id="line-309"> /**</span>
<span class="source-line-no">310</span><span id="line-310"> * Returns the list of new regions added during the on-disk restore. The caller is responsible</span>
<span class="source-line-no">311</span><span id="line-311"> * to add the regions to META. e.g MetaTableAccessor.addRegionsToMeta(...)</span>
<span class="source-line-no">312</span><span id="line-312"> * @return the list of regions to add to META</span>
<span class="source-line-no">313</span><span id="line-313"> */</span>
<span class="source-line-no">314</span><span id="line-314"> public List&lt;RegionInfo&gt; getRegionsToAdd() {</span>
<span class="source-line-no">315</span><span id="line-315"> return this.regionsToAdd;</span>
<span class="source-line-no">316</span><span id="line-316"> }</span>
<span class="source-line-no">317</span><span id="line-317"></span>
<span class="source-line-no">318</span><span id="line-318"> /** Returns true if there're regions to restore */</span>
<span class="source-line-no">319</span><span id="line-319"> public boolean hasRegionsToRestore() {</span>
<span class="source-line-no">320</span><span id="line-320"> return this.regionsToRestore != null &amp;&amp; this.regionsToRestore.size() &gt; 0;</span>
<span class="source-line-no">321</span><span id="line-321"> }</span>
<span class="source-line-no">322</span><span id="line-322"></span>
<span class="source-line-no">323</span><span id="line-323"> /**</span>
<span class="source-line-no">324</span><span id="line-324"> * Returns the list of 'restored regions' during the on-disk restore. The caller is responsible</span>
<span class="source-line-no">325</span><span id="line-325"> * to add the regions to hbase:meta if not present.</span>
<span class="source-line-no">326</span><span id="line-326"> * @return the list of regions restored</span>
<span class="source-line-no">327</span><span id="line-327"> */</span>
<span class="source-line-no">328</span><span id="line-328"> public List&lt;RegionInfo&gt; getRegionsToRestore() {</span>
<span class="source-line-no">329</span><span id="line-329"> return this.regionsToRestore;</span>
<span class="source-line-no">330</span><span id="line-330"> }</span>
<span class="source-line-no">331</span><span id="line-331"></span>
<span class="source-line-no">332</span><span id="line-332"> /** Returns true if there're regions to remove */</span>
<span class="source-line-no">333</span><span id="line-333"> public boolean hasRegionsToRemove() {</span>
<span class="source-line-no">334</span><span id="line-334"> return this.regionsToRemove != null &amp;&amp; this.regionsToRemove.size() &gt; 0;</span>
<span class="source-line-no">335</span><span id="line-335"> }</span>
<span class="source-line-no">336</span><span id="line-336"></span>
<span class="source-line-no">337</span><span id="line-337"> /**</span>
<span class="source-line-no">338</span><span id="line-338"> * Returns the list of regions removed during the on-disk restore. The caller is responsible to</span>
<span class="source-line-no">339</span><span id="line-339"> * remove the regions from META. e.g. MetaTableAccessor.deleteRegions(...)</span>
<span class="source-line-no">340</span><span id="line-340"> * @return the list of regions to remove from META</span>
<span class="source-line-no">341</span><span id="line-341"> */</span>
<span class="source-line-no">342</span><span id="line-342"> public List&lt;RegionInfo&gt; getRegionsToRemove() {</span>
<span class="source-line-no">343</span><span id="line-343"> return this.regionsToRemove;</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"> void setNewRegions(final RegionInfo[] hris) {</span>
<span class="source-line-no">347</span><span id="line-347"> if (hris != null) {</span>
<span class="source-line-no">348</span><span id="line-348"> regionsToAdd = Arrays.asList(hris);</span>
<span class="source-line-no">349</span><span id="line-349"> } else {</span>
<span class="source-line-no">350</span><span id="line-350"> regionsToAdd = null;</span>
<span class="source-line-no">351</span><span id="line-351"> }</span>
<span class="source-line-no">352</span><span id="line-352"> }</span>
<span class="source-line-no">353</span><span id="line-353"></span>
<span class="source-line-no">354</span><span id="line-354"> void addRegionToRemove(final RegionInfo hri) {</span>
<span class="source-line-no">355</span><span id="line-355"> if (regionsToRemove == null) {</span>
<span class="source-line-no">356</span><span id="line-356"> regionsToRemove = new LinkedList&lt;&gt;();</span>
<span class="source-line-no">357</span><span id="line-357"> }</span>
<span class="source-line-no">358</span><span id="line-358"> regionsToRemove.add(hri);</span>
<span class="source-line-no">359</span><span id="line-359"> }</span>
<span class="source-line-no">360</span><span id="line-360"></span>
<span class="source-line-no">361</span><span id="line-361"> void addRegionToRestore(final RegionInfo hri) {</span>
<span class="source-line-no">362</span><span id="line-362"> if (regionsToRestore == null) {</span>
<span class="source-line-no">363</span><span id="line-363"> regionsToRestore = new LinkedList&lt;&gt;();</span>
<span class="source-line-no">364</span><span id="line-364"> }</span>
<span class="source-line-no">365</span><span id="line-365"> regionsToRestore.add(hri);</span>
<span class="source-line-no">366</span><span id="line-366"> }</span>
<span class="source-line-no">367</span><span id="line-367"></span>
<span class="source-line-no">368</span><span id="line-368"> public void updateMetaParentRegions(Connection connection, final List&lt;RegionInfo&gt; regionInfos)</span>
<span class="source-line-no">369</span><span id="line-369"> throws IOException {</span>
<span class="source-line-no">370</span><span id="line-370"> if (regionInfos == null || parentsMap.isEmpty()) return;</span>
<span class="source-line-no">371</span><span id="line-371"></span>
<span class="source-line-no">372</span><span id="line-372"> // Extract region names and offlined regions</span>
<span class="source-line-no">373</span><span id="line-373"> Map&lt;String, RegionInfo&gt; regionsByName = new HashMap&lt;&gt;(regionInfos.size());</span>
<span class="source-line-no">374</span><span id="line-374"> List&lt;RegionInfo&gt; parentRegions = new LinkedList&lt;&gt;();</span>
<span class="source-line-no">375</span><span id="line-375"> for (RegionInfo regionInfo : regionInfos) {</span>
<span class="source-line-no">376</span><span id="line-376"> if (regionInfo.isSplitParent()) {</span>
<span class="source-line-no">377</span><span id="line-377"> parentRegions.add(regionInfo);</span>
<span class="source-line-no">378</span><span id="line-378"> } else {</span>
<span class="source-line-no">379</span><span id="line-379"> regionsByName.put(regionInfo.getEncodedName(), regionInfo);</span>
<span class="source-line-no">380</span><span id="line-380"> }</span>
<span class="source-line-no">381</span><span id="line-381"> }</span>
<span class="source-line-no">382</span><span id="line-382"></span>
<span class="source-line-no">383</span><span id="line-383"> // Update Offline parents</span>
<span class="source-line-no">384</span><span id="line-384"> for (RegionInfo regionInfo : parentRegions) {</span>
<span class="source-line-no">385</span><span id="line-385"> Pair&lt;String, String&gt; daughters = parentsMap.get(regionInfo.getEncodedName());</span>
<span class="source-line-no">386</span><span id="line-386"> if (daughters == null) {</span>
<span class="source-line-no">387</span><span id="line-387"> // The snapshot contains an unreferenced region.</span>
<span class="source-line-no">388</span><span id="line-388"> // It will be removed by the CatalogJanitor.</span>
<span class="source-line-no">389</span><span id="line-389"> LOG.warn("Skip update of unreferenced offline parent: " + regionInfo);</span>
<span class="source-line-no">390</span><span id="line-390"> continue;</span>
<span class="source-line-no">391</span><span id="line-391"> }</span>
<span class="source-line-no">392</span><span id="line-392"></span>
<span class="source-line-no">393</span><span id="line-393"> // One side of the split is already compacted</span>
<span class="source-line-no">394</span><span id="line-394"> if (daughters.getSecond() == null) {</span>
<span class="source-line-no">395</span><span id="line-395"> daughters.setSecond(daughters.getFirst());</span>
<span class="source-line-no">396</span><span id="line-396"> }</span>
<span class="source-line-no">397</span><span id="line-397"></span>
<span class="source-line-no">398</span><span id="line-398"> LOG.debug("Update splits parent " + regionInfo.getEncodedName() + " -&gt; " + daughters);</span>
<span class="source-line-no">399</span><span id="line-399"> MetaTableAccessor.addSplitsToParent(connection, regionInfo,</span>
<span class="source-line-no">400</span><span id="line-400"> regionsByName.get(daughters.getFirst()), regionsByName.get(daughters.getSecond()));</span>
<span class="source-line-no">401</span><span id="line-401"> }</span>
<span class="source-line-no">402</span><span id="line-402"> }</span>
<span class="source-line-no">403</span><span id="line-403"> }</span>
<span class="source-line-no">404</span><span id="line-404"></span>
<span class="source-line-no">405</span><span id="line-405"> /**</span>
<span class="source-line-no">406</span><span id="line-406"> * Remove specified regions from the file-system, using the archiver.</span>
<span class="source-line-no">407</span><span id="line-407"> */</span>
<span class="source-line-no">408</span><span id="line-408"> private void removeHdfsRegions(final ThreadPoolExecutor exec, final List&lt;RegionInfo&gt; regions)</span>
<span class="source-line-no">409</span><span id="line-409"> throws IOException {</span>
<span class="source-line-no">410</span><span id="line-410"> if (regions == null || regions.isEmpty()) return;</span>
<span class="source-line-no">411</span><span id="line-411"> ModifyRegionUtils.editRegions(exec, regions, new ModifyRegionUtils.RegionEditTask() {</span>
<span class="source-line-no">412</span><span id="line-412"> @Override</span>
<span class="source-line-no">413</span><span id="line-413"> public void editRegion(final RegionInfo hri) throws IOException {</span>
<span class="source-line-no">414</span><span id="line-414"> HFileArchiver.archiveRegion(conf, fs, hri);</span>
<span class="source-line-no">415</span><span id="line-415"> }</span>
<span class="source-line-no">416</span><span id="line-416"> });</span>
<span class="source-line-no">417</span><span id="line-417"> }</span>
<span class="source-line-no">418</span><span id="line-418"></span>
<span class="source-line-no">419</span><span id="line-419"> /**</span>
<span class="source-line-no">420</span><span id="line-420"> * Restore specified regions by restoring content to the snapshot state.</span>
<span class="source-line-no">421</span><span id="line-421"> */</span>
<span class="source-line-no">422</span><span id="line-422"> private void restoreHdfsRegions(final ThreadPoolExecutor exec,</span>
<span class="source-line-no">423</span><span id="line-423"> final Map&lt;String, SnapshotRegionManifest&gt; regionManifests, final List&lt;RegionInfo&gt; regions)</span>
<span class="source-line-no">424</span><span id="line-424"> throws IOException {</span>
<span class="source-line-no">425</span><span id="line-425"> if (regions == null || regions.isEmpty()) return;</span>
<span class="source-line-no">426</span><span id="line-426"> ModifyRegionUtils.editRegions(exec, regions, new ModifyRegionUtils.RegionEditTask() {</span>
<span class="source-line-no">427</span><span id="line-427"> @Override</span>
<span class="source-line-no">428</span><span id="line-428"> public void editRegion(final RegionInfo hri) throws IOException {</span>
<span class="source-line-no">429</span><span id="line-429"> restoreRegion(hri, regionManifests.get(hri.getEncodedName()));</span>
<span class="source-line-no">430</span><span id="line-430"> }</span>
<span class="source-line-no">431</span><span id="line-431"> });</span>
<span class="source-line-no">432</span><span id="line-432"> }</span>
<span class="source-line-no">433</span><span id="line-433"></span>
<span class="source-line-no">434</span><span id="line-434"> /**</span>
<span class="source-line-no">435</span><span id="line-435"> * Restore specified mob regions by restoring content to the snapshot state.</span>
<span class="source-line-no">436</span><span id="line-436"> */</span>
<span class="source-line-no">437</span><span id="line-437"> private void restoreHdfsMobRegions(final ThreadPoolExecutor exec,</span>
<span class="source-line-no">438</span><span id="line-438"> final Map&lt;String, SnapshotRegionManifest&gt; regionManifests, final List&lt;RegionInfo&gt; regions)</span>
<span class="source-line-no">439</span><span id="line-439"> throws IOException {</span>
<span class="source-line-no">440</span><span id="line-440"> if (regions == null || regions.isEmpty()) return;</span>
<span class="source-line-no">441</span><span id="line-441"> ModifyRegionUtils.editRegions(exec, regions, new ModifyRegionUtils.RegionEditTask() {</span>
<span class="source-line-no">442</span><span id="line-442"> @Override</span>
<span class="source-line-no">443</span><span id="line-443"> public void editRegion(final RegionInfo hri) throws IOException {</span>
<span class="source-line-no">444</span><span id="line-444"> restoreMobRegion(hri, regionManifests.get(hri.getEncodedName()));</span>
<span class="source-line-no">445</span><span id="line-445"> }</span>
<span class="source-line-no">446</span><span id="line-446"> });</span>
<span class="source-line-no">447</span><span id="line-447"> }</span>
<span class="source-line-no">448</span><span id="line-448"></span>
<span class="source-line-no">449</span><span id="line-449"> private Map&lt;String, List&lt;SnapshotRegionManifest.StoreFile&gt;&gt;</span>
<span class="source-line-no">450</span><span id="line-450"> getRegionHFileReferences(final SnapshotRegionManifest manifest) {</span>
<span class="source-line-no">451</span><span id="line-451"> Map&lt;String, List&lt;SnapshotRegionManifest.StoreFile&gt;&gt; familyMap =</span>
<span class="source-line-no">452</span><span id="line-452"> new HashMap&lt;&gt;(manifest.getFamilyFilesCount());</span>
<span class="source-line-no">453</span><span id="line-453"> for (SnapshotRegionManifest.FamilyFiles familyFiles : manifest.getFamilyFilesList()) {</span>
<span class="source-line-no">454</span><span id="line-454"> familyMap.put(familyFiles.getFamilyName().toStringUtf8(),</span>
<span class="source-line-no">455</span><span id="line-455"> new ArrayList&lt;&gt;(familyFiles.getStoreFilesList()));</span>
<span class="source-line-no">456</span><span id="line-456"> }</span>
<span class="source-line-no">457</span><span id="line-457"> return familyMap;</span>
<span class="source-line-no">458</span><span id="line-458"> }</span>
<span class="source-line-no">459</span><span id="line-459"></span>
<span class="source-line-no">460</span><span id="line-460"> /**</span>
<span class="source-line-no">461</span><span id="line-461"> * Restore region by removing files not in the snapshot and adding the missing ones from the</span>
<span class="source-line-no">462</span><span id="line-462"> * snapshot.</span>
<span class="source-line-no">463</span><span id="line-463"> */</span>
<span class="source-line-no">464</span><span id="line-464"> private void restoreRegion(final RegionInfo regionInfo,</span>
<span class="source-line-no">465</span><span id="line-465"> final SnapshotRegionManifest regionManifest) throws IOException {</span>
<span class="source-line-no">466</span><span id="line-466"> restoreRegion(regionInfo, regionManifest, new Path(tableDir, regionInfo.getEncodedName()));</span>
<span class="source-line-no">467</span><span id="line-467"> }</span>
<span class="source-line-no">468</span><span id="line-468"></span>
<span class="source-line-no">469</span><span id="line-469"> /**</span>
<span class="source-line-no">470</span><span id="line-470"> * Restore mob region by removing files not in the snapshot and adding the missing ones from the</span>
<span class="source-line-no">471</span><span id="line-471"> * snapshot.</span>
<span class="source-line-no">472</span><span id="line-472"> */</span>
<span class="source-line-no">473</span><span id="line-473"> private void restoreMobRegion(final RegionInfo regionInfo,</span>
<span class="source-line-no">474</span><span id="line-474"> final SnapshotRegionManifest regionManifest) throws IOException {</span>
<span class="source-line-no">475</span><span id="line-475"> if (regionManifest == null) {</span>
<span class="source-line-no">476</span><span id="line-476"> return;</span>
<span class="source-line-no">477</span><span id="line-477"> }</span>
<span class="source-line-no">478</span><span id="line-478"> restoreRegion(regionInfo, regionManifest,</span>
<span class="source-line-no">479</span><span id="line-479"> MobUtils.getMobRegionPath(conf, tableDesc.getTableName()));</span>
<span class="source-line-no">480</span><span id="line-480"> }</span>
<span class="source-line-no">481</span><span id="line-481"></span>
<span class="source-line-no">482</span><span id="line-482"> /**</span>
<span class="source-line-no">483</span><span id="line-483"> * Restore region by removing files not in the snapshot and adding the missing ones from the</span>
<span class="source-line-no">484</span><span id="line-484"> * snapshot.</span>
<span class="source-line-no">485</span><span id="line-485"> */</span>
<span class="source-line-no">486</span><span id="line-486"> private void restoreRegion(final RegionInfo regionInfo,</span>
<span class="source-line-no">487</span><span id="line-487"> final SnapshotRegionManifest regionManifest, Path regionDir) throws IOException {</span>
<span class="source-line-no">488</span><span id="line-488"> Map&lt;String, List&lt;SnapshotRegionManifest.StoreFile&gt;&gt; snapshotFiles =</span>
<span class="source-line-no">489</span><span id="line-489"> getRegionHFileReferences(regionManifest);</span>
<span class="source-line-no">490</span><span id="line-490"></span>
<span class="source-line-no">491</span><span id="line-491"> String tableName = tableDesc.getTableName().getNameAsString();</span>
<span class="source-line-no">492</span><span id="line-492"> final String snapshotName = snapshotDesc.getName();</span>
<span class="source-line-no">493</span><span id="line-493"></span>
<span class="source-line-no">494</span><span id="line-494"> Path regionPath = new Path(tableDir, regionInfo.getEncodedName());</span>
<span class="source-line-no">495</span><span id="line-495"> HRegionFileSystem regionFS = (fs.exists(regionPath))</span>
<span class="source-line-no">496</span><span id="line-496"> ? HRegionFileSystem.openRegionFromFileSystem(conf, fs, tableDir, regionInfo, false)</span>
<span class="source-line-no">497</span><span id="line-497"> : HRegionFileSystem.createRegionOnFileSystem(conf, fs, tableDir, regionInfo);</span>
<span class="source-line-no">498</span><span id="line-498"></span>
<span class="source-line-no">499</span><span id="line-499"> // Restore families present in the table</span>
<span class="source-line-no">500</span><span id="line-500"> for (Path familyDir : FSUtils.getFamilyDirs(fs, regionDir)) {</span>
<span class="source-line-no">501</span><span id="line-501"> byte[] family = Bytes.toBytes(familyDir.getName());</span>
<span class="source-line-no">502</span><span id="line-502"></span>
<span class="source-line-no">503</span><span id="line-503"> Set&lt;String&gt; familyFiles = getTableRegionFamilyFiles(familyDir);</span>
<span class="source-line-no">504</span><span id="line-504"> List&lt;SnapshotRegionManifest.StoreFile&gt; snapshotFamilyFiles =</span>
<span class="source-line-no">505</span><span id="line-505"> snapshotFiles.remove(familyDir.getName());</span>
<span class="source-line-no">506</span><span id="line-506"> List&lt;StoreFileInfo&gt; filesToTrack = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">507</span><span id="line-507"> if (snapshotFamilyFiles != null) {</span>
<span class="source-line-no">508</span><span id="line-508"> List&lt;SnapshotRegionManifest.StoreFile&gt; hfilesToAdd = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">509</span><span id="line-509"> for (SnapshotRegionManifest.StoreFile storeFile : snapshotFamilyFiles) {</span>
<span class="source-line-no">510</span><span id="line-510"> if (familyFiles.contains(storeFile.getName())) {</span>
<span class="source-line-no">511</span><span id="line-511"> // HFile already present</span>
<span class="source-line-no">512</span><span id="line-512"> familyFiles.remove(storeFile.getName());</span>
<span class="source-line-no">513</span><span id="line-513"> // no need to restore already present files, but we need to add those to tracker</span>
<span class="source-line-no">514</span><span id="line-514"> filesToTrack</span>
<span class="source-line-no">515</span><span id="line-515"> .add(new StoreFileInfo(conf, fs, new Path(familyDir, storeFile.getName()), true));</span>
<span class="source-line-no">516</span><span id="line-516"> } else {</span>
<span class="source-line-no">517</span><span id="line-517"> // HFile missing</span>
<span class="source-line-no">518</span><span id="line-518"> hfilesToAdd.add(storeFile);</span>
<span class="source-line-no">519</span><span id="line-519"> }</span>
<span class="source-line-no">520</span><span id="line-520"> }</span>
<span class="source-line-no">521</span><span id="line-521"></span>
<span class="source-line-no">522</span><span id="line-522"> // Remove hfiles not present in the snapshot</span>
<span class="source-line-no">523</span><span id="line-523"> for (String hfileName : familyFiles) {</span>
<span class="source-line-no">524</span><span id="line-524"> Path hfile = new Path(familyDir, hfileName);</span>
<span class="source-line-no">525</span><span id="line-525"> if (!fs.getFileStatus(hfile).isDirectory()) {</span>
<span class="source-line-no">526</span><span id="line-526"> LOG.trace("Removing HFile=" + hfileName + " not present in snapshot=" + snapshotName</span>
<span class="source-line-no">527</span><span id="line-527"> + " from region=" + regionInfo.getEncodedName() + " table=" + tableName);</span>
<span class="source-line-no">528</span><span id="line-528"> HFileArchiver.archiveStoreFile(conf, fs, regionInfo, tableDir, family, hfile);</span>
<span class="source-line-no">529</span><span id="line-529"> }</span>
<span class="source-line-no">530</span><span id="line-530"> }</span>
<span class="source-line-no">531</span><span id="line-531"></span>
<span class="source-line-no">532</span><span id="line-532"> // Restore Missing files</span>
<span class="source-line-no">533</span><span id="line-533"> for (SnapshotRegionManifest.StoreFile storeFile : hfilesToAdd) {</span>
<span class="source-line-no">534</span><span id="line-534"> LOG.debug("Restoring missing HFileLink " + storeFile.getName() + " of snapshot="</span>
<span class="source-line-no">535</span><span id="line-535"> + snapshotName + " to region=" + regionInfo.getEncodedName() + " table=" + tableName);</span>
<span class="source-line-no">536</span><span id="line-536"> String fileName = restoreStoreFile(familyDir, regionInfo, storeFile, createBackRefs);</span>
<span class="source-line-no">537</span><span id="line-537"> // mark the reference file to be added to tracker</span>
<span class="source-line-no">538</span><span id="line-538"> filesToTrack.add(new StoreFileInfo(conf, fs, new Path(familyDir, fileName), true));</span>
<span class="source-line-no">539</span><span id="line-539"> }</span>
<span class="source-line-no">540</span><span id="line-540"> } else {</span>
<span class="source-line-no">541</span><span id="line-541"> // Family doesn't exists in the snapshot</span>
<span class="source-line-no">542</span><span id="line-542"> LOG.trace("Removing family=" + Bytes.toString(family) + " in snapshot=" + snapshotName</span>
<span class="source-line-no">543</span><span id="line-543"> + " from region=" + regionInfo.getEncodedName() + " table=" + tableName);</span>
<span class="source-line-no">544</span><span id="line-544"> HFileArchiver.archiveFamilyByFamilyDir(fs, conf, regionInfo, familyDir, family);</span>
<span class="source-line-no">545</span><span id="line-545"> fs.delete(familyDir, true);</span>
<span class="source-line-no">546</span><span id="line-546"> }</span>
<span class="source-line-no">547</span><span id="line-547"></span>
<span class="source-line-no">548</span><span id="line-548"> StoreFileTracker tracker =</span>
<span class="source-line-no">549</span><span id="line-549"> StoreFileTrackerFactory.create(conf, true, StoreContext.getBuilder()</span>
<span class="source-line-no">550</span><span id="line-550"> .withFamilyStoreDirectoryPath(familyDir).withRegionFileSystem(regionFS).build());</span>
<span class="source-line-no">551</span><span id="line-551"></span>
<span class="source-line-no">552</span><span id="line-552"> // simply reset list of tracked files with the matching files</span>
<span class="source-line-no">553</span><span id="line-553"> // and the extra one present in the snapshot</span>
<span class="source-line-no">554</span><span id="line-554"> tracker.set(filesToTrack);</span>
<span class="source-line-no">555</span><span id="line-555"> }</span>
<span class="source-line-no">556</span><span id="line-556"></span>
<span class="source-line-no">557</span><span id="line-557"> // Add families not present in the table</span>
<span class="source-line-no">558</span><span id="line-558"> for (Map.Entry&lt;String, List&lt;SnapshotRegionManifest.StoreFile&gt;&gt; familyEntry : snapshotFiles</span>
<span class="source-line-no">559</span><span id="line-559"> .entrySet()) {</span>
<span class="source-line-no">560</span><span id="line-560"> Path familyDir = new Path(regionDir, familyEntry.getKey());</span>
<span class="source-line-no">561</span><span id="line-561"> StoreFileTracker tracker =</span>
<span class="source-line-no">562</span><span id="line-562"> StoreFileTrackerFactory.create(conf, true, StoreContext.getBuilder()</span>
<span class="source-line-no">563</span><span id="line-563"> .withFamilyStoreDirectoryPath(familyDir).withRegionFileSystem(regionFS).build());</span>
<span class="source-line-no">564</span><span id="line-564"> List&lt;StoreFileInfo&gt; files = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">565</span><span id="line-565"> if (!fs.mkdirs(familyDir)) {</span>
<span class="source-line-no">566</span><span id="line-566"> throw new IOException("Unable to create familyDir=" + familyDir);</span>
<span class="source-line-no">567</span><span id="line-567"> }</span>
<span class="source-line-no">568</span><span id="line-568"></span>
<span class="source-line-no">569</span><span id="line-569"> for (SnapshotRegionManifest.StoreFile storeFile : familyEntry.getValue()) {</span>
<span class="source-line-no">570</span><span id="line-570"> LOG.trace("Adding HFileLink (Not present in the table) " + storeFile.getName()</span>
<span class="source-line-no">571</span><span id="line-571"> + " of snapshot " + snapshotName + " to table=" + tableName);</span>
<span class="source-line-no">572</span><span id="line-572"> String fileName = restoreStoreFile(familyDir, regionInfo, storeFile, createBackRefs);</span>
<span class="source-line-no">573</span><span id="line-573"> files.add(new StoreFileInfo(conf, fs, new Path(familyDir, fileName), true));</span>
<span class="source-line-no">574</span><span id="line-574"> }</span>
<span class="source-line-no">575</span><span id="line-575"> tracker.set(files);</span>
<span class="source-line-no">576</span><span id="line-576"> }</span>
<span class="source-line-no">577</span><span id="line-577"> }</span>
<span class="source-line-no">578</span><span id="line-578"></span>
<span class="source-line-no">579</span><span id="line-579"> /** Returns The set of files in the specified family directory. */</span>
<span class="source-line-no">580</span><span id="line-580"> private Set&lt;String&gt; getTableRegionFamilyFiles(final Path familyDir) throws IOException {</span>
<span class="source-line-no">581</span><span id="line-581"> FileStatus[] hfiles = CommonFSUtils.listStatus(fs, familyDir);</span>
<span class="source-line-no">582</span><span id="line-582"> if (hfiles == null) {</span>
<span class="source-line-no">583</span><span id="line-583"> return Collections.emptySet();</span>
<span class="source-line-no">584</span><span id="line-584"> }</span>
<span class="source-line-no">585</span><span id="line-585"></span>
<span class="source-line-no">586</span><span id="line-586"> Set&lt;String&gt; familyFiles = new HashSet&lt;&gt;(hfiles.length);</span>
<span class="source-line-no">587</span><span id="line-587"> for (int i = 0; i &lt; hfiles.length; ++i) {</span>
<span class="source-line-no">588</span><span id="line-588"> String hfileName = hfiles[i].getPath().getName();</span>
<span class="source-line-no">589</span><span id="line-589"> familyFiles.add(hfileName);</span>
<span class="source-line-no">590</span><span id="line-590"> }</span>
<span class="source-line-no">591</span><span id="line-591"></span>
<span class="source-line-no">592</span><span id="line-592"> return familyFiles;</span>
<span class="source-line-no">593</span><span id="line-593"> }</span>
<span class="source-line-no">594</span><span id="line-594"></span>
<span class="source-line-no">595</span><span id="line-595"> /**</span>
<span class="source-line-no">596</span><span id="line-596"> * Clone specified regions. For each region create a new region and create a HFileLink for each</span>
<span class="source-line-no">597</span><span id="line-597"> * hfile.</span>
<span class="source-line-no">598</span><span id="line-598"> */</span>
<span class="source-line-no">599</span><span id="line-599"> private RegionInfo[] cloneHdfsRegions(final ThreadPoolExecutor exec,</span>
<span class="source-line-no">600</span><span id="line-600"> final Map&lt;String, SnapshotRegionManifest&gt; regionManifests, final List&lt;RegionInfo&gt; regions)</span>
<span class="source-line-no">601</span><span id="line-601"> throws IOException {</span>
<span class="source-line-no">602</span><span id="line-602"> if (regions == null || regions.isEmpty()) return null;</span>
<span class="source-line-no">603</span><span id="line-603"></span>
<span class="source-line-no">604</span><span id="line-604"> final Map&lt;String, RegionInfo&gt; snapshotRegions = new HashMap&lt;&gt;(regions.size());</span>
<span class="source-line-no">605</span><span id="line-605"> final String snapshotName = snapshotDesc.getName();</span>
<span class="source-line-no">606</span><span id="line-606"></span>
<span class="source-line-no">607</span><span id="line-607"> // clone region info (change embedded tableName with the new one)</span>
<span class="source-line-no">608</span><span id="line-608"> RegionInfo[] clonedRegionsInfo = new RegionInfo[regions.size()];</span>
<span class="source-line-no">609</span><span id="line-609"> for (int i = 0; i &lt; clonedRegionsInfo.length; ++i) {</span>
<span class="source-line-no">610</span><span id="line-610"> // clone the region info from the snapshot region info</span>
<span class="source-line-no">611</span><span id="line-611"> RegionInfo snapshotRegionInfo = regions.get(i);</span>
<span class="source-line-no">612</span><span id="line-612"> clonedRegionsInfo[i] = cloneRegionInfo(snapshotRegionInfo);</span>
<span class="source-line-no">613</span><span id="line-613"></span>
<span class="source-line-no">614</span><span id="line-614"> // add the region name mapping between snapshot and cloned</span>
<span class="source-line-no">615</span><span id="line-615"> String snapshotRegionName = snapshotRegionInfo.getEncodedName();</span>
<span class="source-line-no">616</span><span id="line-616"> String clonedRegionName = clonedRegionsInfo[i].getEncodedName();</span>
<span class="source-line-no">617</span><span id="line-617"> regionsMap.put(Bytes.toBytes(snapshotRegionName), Bytes.toBytes(clonedRegionName));</span>
<span class="source-line-no">618</span><span id="line-618"> LOG.info("clone region=" + snapshotRegionName + " as " + clonedRegionName + " in snapshot "</span>
<span class="source-line-no">619</span><span id="line-619"> + snapshotName);</span>
<span class="source-line-no">620</span><span id="line-620"></span>
<span class="source-line-no">621</span><span id="line-621"> // Add mapping between cloned region name and snapshot region info</span>
<span class="source-line-no">622</span><span id="line-622"> snapshotRegions.put(clonedRegionName, snapshotRegionInfo);</span>
<span class="source-line-no">623</span><span id="line-623"> }</span>
<span class="source-line-no">624</span><span id="line-624"></span>
<span class="source-line-no">625</span><span id="line-625"> // create the regions on disk</span>
<span class="source-line-no">626</span><span id="line-626"> ModifyRegionUtils.createRegions(exec, conf, rootDir, tableDesc, clonedRegionsInfo,</span>
<span class="source-line-no">627</span><span id="line-627"> new ModifyRegionUtils.RegionFillTask() {</span>
<span class="source-line-no">628</span><span id="line-628"> @Override</span>
<span class="source-line-no">629</span><span id="line-629"> public void fillRegion(final HRegion region) throws IOException {</span>
<span class="source-line-no">630</span><span id="line-630"> RegionInfo snapshotHri = snapshotRegions.get(region.getRegionInfo().getEncodedName());</span>
<span class="source-line-no">631</span><span id="line-631"> cloneRegion(region, snapshotHri, regionManifests.get(snapshotHri.getEncodedName()));</span>
<span class="source-line-no">632</span><span id="line-632"> }</span>
<span class="source-line-no">633</span><span id="line-633"> });</span>
<span class="source-line-no">634</span><span id="line-634"></span>
<span class="source-line-no">635</span><span id="line-635"> return clonedRegionsInfo;</span>
<span class="source-line-no">636</span><span id="line-636"> }</span>
<span class="source-line-no">637</span><span id="line-637"></span>
<span class="source-line-no">638</span><span id="line-638"> /**</span>
<span class="source-line-no">639</span><span id="line-639"> * Clone the mob region. For the region create a new region and create a HFileLink for each hfile.</span>
<span class="source-line-no">640</span><span id="line-640"> */</span>
<span class="source-line-no">641</span><span id="line-641"> private void cloneHdfsMobRegion(final Map&lt;String, SnapshotRegionManifest&gt; regionManifests,</span>
<span class="source-line-no">642</span><span id="line-642"> final RegionInfo region) throws IOException {</span>
<span class="source-line-no">643</span><span id="line-643"> // clone region info (change embedded tableName with the new one)</span>
<span class="source-line-no">644</span><span id="line-644"> Path clonedRegionPath = MobUtils.getMobRegionPath(rootDir, tableDesc.getTableName());</span>
<span class="source-line-no">645</span><span id="line-645"> cloneRegion(MobUtils.getMobRegionInfo(tableDesc.getTableName()), clonedRegionPath, region,</span>
<span class="source-line-no">646</span><span id="line-646"> regionManifests.get(region.getEncodedName()));</span>
<span class="source-line-no">647</span><span id="line-647"> }</span>
<span class="source-line-no">648</span><span id="line-648"></span>
<span class="source-line-no">649</span><span id="line-649"> /**</span>
<span class="source-line-no">650</span><span id="line-650"> * Clone region directory content from the snapshot info. Each region is encoded with the table</span>
<span class="source-line-no">651</span><span id="line-651"> * name, so the cloned region will have a different region name. Instead of copying the hfiles a</span>
<span class="source-line-no">652</span><span id="line-652"> * HFileLink is created.</span>
<span class="source-line-no">653</span><span id="line-653"> * @param regionDir {@link Path} cloned dir</span>
<span class="source-line-no">654</span><span id="line-654"> */</span>
<span class="source-line-no">655</span><span id="line-655"> private void cloneRegion(final RegionInfo newRegionInfo, final Path regionDir,</span>
<span class="source-line-no">656</span><span id="line-656"> final RegionInfo snapshotRegionInfo, final SnapshotRegionManifest manifest) throws IOException {</span>
<span class="source-line-no">657</span><span id="line-657"> final String tableName = tableDesc.getTableName().getNameAsString();</span>
<span class="source-line-no">658</span><span id="line-658"> final String snapshotName = snapshotDesc.getName();</span>
<span class="source-line-no">659</span><span id="line-659"> for (SnapshotRegionManifest.FamilyFiles familyFiles : manifest.getFamilyFilesList()) {</span>
<span class="source-line-no">660</span><span id="line-660"> Path familyDir = new Path(regionDir, familyFiles.getFamilyName().toStringUtf8());</span>
<span class="source-line-no">661</span><span id="line-661"> List&lt;StoreFileInfo&gt; clonedFiles = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">662</span><span id="line-662"> for (SnapshotRegionManifest.StoreFile storeFile : familyFiles.getStoreFilesList()) {</span>
<span class="source-line-no">663</span><span id="line-663"> LOG.info("Adding HFileLink " + storeFile.getName() + " from cloned region " + "in snapshot "</span>
<span class="source-line-no">664</span><span id="line-664"> + snapshotName + " to table=" + tableName);</span>
<span class="source-line-no">665</span><span id="line-665"> if (MobUtils.isMobRegionInfo(newRegionInfo)) {</span>
<span class="source-line-no">666</span><span id="line-666"> String mobFileName =</span>
<span class="source-line-no">667</span><span id="line-667"> HFileLink.createHFileLinkName(snapshotRegionInfo, storeFile.getName());</span>
<span class="source-line-no">668</span><span id="line-668"> Path mobPath = new Path(familyDir, mobFileName);</span>
<span class="source-line-no">669</span><span id="line-669"> if (fs.exists(mobPath)) {</span>
<span class="source-line-no">670</span><span id="line-670"> fs.delete(mobPath, true);</span>
<span class="source-line-no">671</span><span id="line-671"> }</span>
<span class="source-line-no">672</span><span id="line-672"> restoreStoreFile(familyDir, snapshotRegionInfo, storeFile, createBackRefs);</span>
<span class="source-line-no">673</span><span id="line-673"> } else {</span>
<span class="source-line-no">674</span><span id="line-674"> String file = restoreStoreFile(familyDir, snapshotRegionInfo, storeFile, createBackRefs);</span>
<span class="source-line-no">675</span><span id="line-675"> clonedFiles.add(new StoreFileInfo(conf, fs, new Path(familyDir, file), true));</span>
<span class="source-line-no">676</span><span id="line-676"> }</span>
<span class="source-line-no">677</span><span id="line-677"> }</span>
<span class="source-line-no">678</span><span id="line-678"> // we don't need to track files under mobdir</span>
<span class="source-line-no">679</span><span id="line-679"> if (!MobUtils.isMobRegionInfo(newRegionInfo)) {</span>
<span class="source-line-no">680</span><span id="line-680"> Path regionPath = new Path(tableDir, newRegionInfo.getEncodedName());</span>
<span class="source-line-no">681</span><span id="line-681"> HRegionFileSystem regionFS = (fs.exists(regionPath))</span>
<span class="source-line-no">682</span><span id="line-682"> ? HRegionFileSystem.openRegionFromFileSystem(conf, fs, tableDir, newRegionInfo, false)</span>
<span class="source-line-no">683</span><span id="line-683"> : HRegionFileSystem.createRegionOnFileSystem(conf, fs, tableDir, newRegionInfo);</span>
<span class="source-line-no">684</span><span id="line-684"></span>
<span class="source-line-no">685</span><span id="line-685"> Configuration sftConf = StoreUtils.createStoreConfiguration(conf, tableDesc,</span>
<span class="source-line-no">686</span><span id="line-686"> tableDesc.getColumnFamily(familyFiles.getFamilyName().toByteArray()));</span>
<span class="source-line-no">687</span><span id="line-687"> StoreFileTracker tracker =</span>
<span class="source-line-no">688</span><span id="line-688"> StoreFileTrackerFactory.create(sftConf, true, StoreContext.getBuilder()</span>
<span class="source-line-no">689</span><span id="line-689"> .withFamilyStoreDirectoryPath(familyDir).withRegionFileSystem(regionFS).build());</span>
<span class="source-line-no">690</span><span id="line-690"> tracker.set(clonedFiles);</span>
<span class="source-line-no">691</span><span id="line-691"> }</span>
<span class="source-line-no">692</span><span id="line-692"> }</span>
<span class="source-line-no">693</span><span id="line-693"></span>
<span class="source-line-no">694</span><span id="line-694"> }</span>
<span class="source-line-no">695</span><span id="line-695"></span>
<span class="source-line-no">696</span><span id="line-696"> /**</span>
<span class="source-line-no">697</span><span id="line-697"> * Clone region directory content from the snapshot info. Each region is encoded with the table</span>
<span class="source-line-no">698</span><span id="line-698"> * name, so the cloned region will have a different region name. Instead of copying the hfiles a</span>
<span class="source-line-no">699</span><span id="line-699"> * HFileLink is created.</span>
<span class="source-line-no">700</span><span id="line-700"> * @param region {@link HRegion} cloned</span>
<span class="source-line-no">701</span><span id="line-701"> */</span>
<span class="source-line-no">702</span><span id="line-702"> private void cloneRegion(final HRegion region, final RegionInfo snapshotRegionInfo,</span>
<span class="source-line-no">703</span><span id="line-703"> final SnapshotRegionManifest manifest) throws IOException {</span>
<span class="source-line-no">704</span><span id="line-704"> cloneRegion(region.getRegionInfo(), new Path(tableDir, region.getRegionInfo().getEncodedName()),</span>
<span class="source-line-no">705</span><span id="line-705"> snapshotRegionInfo, manifest);</span>
<span class="source-line-no">706</span><span id="line-706"> }</span>
<span class="source-line-no">707</span><span id="line-707"></span>
<span class="source-line-no">708</span><span id="line-708"> /**</span>
<span class="source-line-no">709</span><span id="line-709"> * Create a new {@link HFileLink} to reference the store file.</span>
<span class="source-line-no">710</span><span id="line-710"> * &lt;p&gt;</span>
<span class="source-line-no">711</span><span id="line-711"> * The store file in the snapshot can be a simple hfile, an HFileLink or a reference.</span>
<span class="source-line-no">712</span><span id="line-712"> * &lt;ul&gt;</span>
<span class="source-line-no">713</span><span id="line-713"> * &lt;li&gt;hfile: abc -&gt; table=region-abc</span>
<span class="source-line-no">714</span><span id="line-714"> * &lt;li&gt;reference: abc.1234 -&gt; table=region-abc.1234</span>
<span class="source-line-no">715</span><span id="line-715"> * &lt;li&gt;hfilelink: table=region-hfile -&gt; table=region-hfile</span>
<span class="source-line-no">716</span><span id="line-716"> * &lt;/ul&gt;</span>
<span class="source-line-no">717</span><span id="line-717"> * @param familyDir destination directory for the store file</span>
<span class="source-line-no">718</span><span id="line-718"> * @param regionInfo destination region info for the table</span>
<span class="source-line-no">719</span><span id="line-719"> * @param createBackRef - Whether back reference should be created. Defaults to true.</span>
<span class="source-line-no">720</span><span id="line-720"> * @param storeFile store file name (can be a Reference, HFileLink or simple HFile)</span>
<span class="source-line-no">721</span><span id="line-721"> */</span>
<span class="source-line-no">722</span><span id="line-722"> private String restoreStoreFile(final Path familyDir, final RegionInfo regionInfo,</span>
<span class="source-line-no">723</span><span id="line-723"> final SnapshotRegionManifest.StoreFile storeFile, final boolean createBackRef)</span>
<span class="source-line-no">724</span><span id="line-724"> throws IOException {</span>
<span class="source-line-no">725</span><span id="line-725"> String hfileName = storeFile.getName();</span>
<span class="source-line-no">726</span><span id="line-726"> if (HFileLink.isHFileLink(hfileName)) {</span>
<span class="source-line-no">727</span><span id="line-727"> return HFileLink.createFromHFileLink(conf, fs, familyDir, hfileName, createBackRef);</span>
<span class="source-line-no">728</span><span id="line-728"> } else if (StoreFileInfo.isReference(hfileName)) {</span>
<span class="source-line-no">729</span><span id="line-729"> return restoreReferenceFile(familyDir, regionInfo, storeFile);</span>
<span class="source-line-no">730</span><span id="line-730"> } else {</span>
<span class="source-line-no">731</span><span id="line-731"> return HFileLink.create(conf, fs, familyDir, regionInfo, hfileName, createBackRef);</span>
<span class="source-line-no">732</span><span id="line-732"> }</span>
<span class="source-line-no">733</span><span id="line-733"> }</span>
<span class="source-line-no">734</span><span id="line-734"></span>
<span class="source-line-no">735</span><span id="line-735"> /**</span>
<span class="source-line-no">736</span><span id="line-736"> * Create a new {@link Reference} as copy of the source one.</span>
<span class="source-line-no">737</span><span id="line-737"> * &lt;p&gt;</span>
<span class="source-line-no">738</span><span id="line-738"> * &lt;blockquote&gt;</span>
<span class="source-line-no">739</span><span id="line-739"> *</span>
<span class="source-line-no">740</span><span id="line-740"> * &lt;pre&gt;</span>
<span class="source-line-no">741</span><span id="line-741"> * The source table looks like:</span>
<span class="source-line-no">742</span><span id="line-742"> * 1234/abc (original file)</span>
<span class="source-line-no">743</span><span id="line-743"> * 5678/abc.1234 (reference file)</span>
<span class="source-line-no">744</span><span id="line-744"> *</span>
<span class="source-line-no">745</span><span id="line-745"> * After the clone operation looks like:</span>
<span class="source-line-no">746</span><span id="line-746"> * wxyz/table=1234-abc</span>
<span class="source-line-no">747</span><span id="line-747"> * stuv/table=1234-abc.wxyz</span>
<span class="source-line-no">748</span><span id="line-748"> *</span>
<span class="source-line-no">749</span><span id="line-749"> * NOTE that the region name in the clone changes (md5 of regioninfo)</span>
<span class="source-line-no">750</span><span id="line-750"> * and the reference should reflect that change.</span>
<span class="source-line-no">751</span><span id="line-751"> * &lt;/pre&gt;</span>
<span class="source-line-no">752</span><span id="line-752"> *</span>
<span class="source-line-no">753</span><span id="line-753"> * &lt;/blockquote&gt;</span>
<span class="source-line-no">754</span><span id="line-754"> * @param familyDir destination directory for the store file</span>
<span class="source-line-no">755</span><span id="line-755"> * @param regionInfo destination region info for the table</span>
<span class="source-line-no">756</span><span id="line-756"> * @param storeFile reference file name</span>
<span class="source-line-no">757</span><span id="line-757"> */</span>
<span class="source-line-no">758</span><span id="line-758"> private String restoreReferenceFile(final Path familyDir, final RegionInfo regionInfo,</span>
<span class="source-line-no">759</span><span id="line-759"> final SnapshotRegionManifest.StoreFile storeFile) throws IOException {</span>
<span class="source-line-no">760</span><span id="line-760"> String hfileName = storeFile.getName();</span>
<span class="source-line-no">761</span><span id="line-761"></span>
<span class="source-line-no">762</span><span id="line-762"> // Extract the referred information (hfile name and parent region)</span>
<span class="source-line-no">763</span><span id="line-763"> Path refPath =</span>
<span class="source-line-no">764</span><span id="line-764"> StoreFileInfo</span>
<span class="source-line-no">765</span><span id="line-765"> .getReferredToFile(</span>
<span class="source-line-no">766</span><span id="line-766"> new Path(</span>
<span class="source-line-no">767</span><span id="line-767"> new Path(</span>
<span class="source-line-no">768</span><span id="line-768"> new Path(new Path(snapshotTable.getNamespaceAsString(),</span>
<span class="source-line-no">769</span><span id="line-769"> snapshotTable.getQualifierAsString()), regionInfo.getEncodedName()),</span>
<span class="source-line-no">770</span><span id="line-770"> familyDir.getName()),</span>
<span class="source-line-no">771</span><span id="line-771"> hfileName));</span>
<span class="source-line-no">772</span><span id="line-772"> String snapshotRegionName = refPath.getParent().getParent().getName();</span>
<span class="source-line-no">773</span><span id="line-773"> String fileName = refPath.getName();</span>
<span class="source-line-no">774</span><span id="line-774"></span>
<span class="source-line-no">775</span><span id="line-775"> // The new reference should have the cloned region name as parent, if it is a clone.</span>
<span class="source-line-no">776</span><span id="line-776"> String clonedRegionName = Bytes.toString(regionsMap.get(Bytes.toBytes(snapshotRegionName)));</span>
<span class="source-line-no">777</span><span id="line-777"> if (clonedRegionName == null) clonedRegionName = snapshotRegionName;</span>
<span class="source-line-no">778</span><span id="line-778"></span>
<span class="source-line-no">779</span><span id="line-779"> // The output file should be a reference link table=snapshotRegion-fileName.clonedRegionName</span>
<span class="source-line-no">780</span><span id="line-780"> Path linkPath = null;</span>
<span class="source-line-no">781</span><span id="line-781"> String refLink = fileName;</span>
<span class="source-line-no">782</span><span id="line-782"> if (!HFileLink.isHFileLink(fileName)) {</span>
<span class="source-line-no">783</span><span id="line-783"> refLink = HFileLink.createHFileLinkName(snapshotTable, snapshotRegionName, fileName);</span>
<span class="source-line-no">784</span><span id="line-784"> linkPath = new Path(familyDir,</span>
<span class="source-line-no">785</span><span id="line-785"> HFileLink.createHFileLinkName(snapshotTable, regionInfo.getEncodedName(), hfileName));</span>
<span class="source-line-no">786</span><span id="line-786"> }</span>
<span class="source-line-no">787</span><span id="line-787"></span>
<span class="source-line-no">788</span><span id="line-788"> Path outPath = new Path(familyDir, refLink + '.' + clonedRegionName);</span>
<span class="source-line-no">789</span><span id="line-789"></span>
<span class="source-line-no">790</span><span id="line-790"> // Create the new reference</span>
<span class="source-line-no">791</span><span id="line-791"> if (storeFile.hasReference()) {</span>
<span class="source-line-no">792</span><span id="line-792"> Reference reference = Reference.convert(storeFile.getReference());</span>
<span class="source-line-no">793</span><span id="line-793"> reference.write(fs, outPath);</span>
<span class="source-line-no">794</span><span id="line-794"> } else {</span>
<span class="source-line-no">795</span><span id="line-795"> InputStream in;</span>
<span class="source-line-no">796</span><span id="line-796"> if (linkPath != null) {</span>
<span class="source-line-no">797</span><span id="line-797"> in = HFileLink.buildFromHFileLinkPattern(conf, linkPath).open(fs);</span>
<span class="source-line-no">798</span><span id="line-798"> } else {</span>
<span class="source-line-no">799</span><span id="line-799"> linkPath = new Path(new Path(</span>
<span class="source-line-no">800</span><span id="line-800"> HRegion.getRegionDir(snapshotManifest.getSnapshotDir(), regionInfo.getEncodedName()),</span>
<span class="source-line-no">801</span><span id="line-801"> familyDir.getName()), hfileName);</span>
<span class="source-line-no">802</span><span id="line-802"> in = fs.open(linkPath);</span>
<span class="source-line-no">803</span><span id="line-803"> }</span>
<span class="source-line-no">804</span><span id="line-804"> OutputStream out = fs.create(outPath);</span>
<span class="source-line-no">805</span><span id="line-805"> IOUtils.copyBytes(in, out, conf);</span>
<span class="source-line-no">806</span><span id="line-806"> }</span>
<span class="source-line-no">807</span><span id="line-807"></span>
<span class="source-line-no">808</span><span id="line-808"> // Add the daughter region to the map</span>
<span class="source-line-no">809</span><span id="line-809"> String regionName = Bytes.toString(regionsMap.get(regionInfo.getEncodedNameAsBytes()));</span>
<span class="source-line-no">810</span><span id="line-810"> if (regionName == null) {</span>
<span class="source-line-no">811</span><span id="line-811"> regionName = regionInfo.getEncodedName();</span>
<span class="source-line-no">812</span><span id="line-812"> }</span>
<span class="source-line-no">813</span><span id="line-813"> LOG.debug("Restore reference " + regionName + " to " + clonedRegionName);</span>
<span class="source-line-no">814</span><span id="line-814"> synchronized (parentsMap) {</span>
<span class="source-line-no">815</span><span id="line-815"> Pair&lt;String, String&gt; daughters = parentsMap.get(clonedRegionName);</span>
<span class="source-line-no">816</span><span id="line-816"> if (daughters == null) {</span>
<span class="source-line-no">817</span><span id="line-817"> // In case one side of the split is already compacted, regionName is put as both first and</span>
<span class="source-line-no">818</span><span id="line-818"> // second of Pair</span>
<span class="source-line-no">819</span><span id="line-819"> daughters = new Pair&lt;&gt;(regionName, regionName);</span>
<span class="source-line-no">820</span><span id="line-820"> parentsMap.put(clonedRegionName, daughters);</span>
<span class="source-line-no">821</span><span id="line-821"> } else if (!regionName.equals(daughters.getFirst())) {</span>
<span class="source-line-no">822</span><span id="line-822"> daughters.setSecond(regionName);</span>
<span class="source-line-no">823</span><span id="line-823"> }</span>
<span class="source-line-no">824</span><span id="line-824"> }</span>
<span class="source-line-no">825</span><span id="line-825"> return outPath.getName();</span>
<span class="source-line-no">826</span><span id="line-826"> }</span>
<span class="source-line-no">827</span><span id="line-827"></span>
<span class="source-line-no">828</span><span id="line-828"> /**</span>
<span class="source-line-no">829</span><span id="line-829"> * Create a new {@link RegionInfo} from the snapshot region info. Keep the same startKey, endKey,</span>
<span class="source-line-no">830</span><span id="line-830"> * regionId and split information but change the table name.</span>
<span class="source-line-no">831</span><span id="line-831"> * @param snapshotRegionInfo Info for region to clone.</span>
<span class="source-line-no">832</span><span id="line-832"> * @return the new HRegion instance</span>
<span class="source-line-no">833</span><span id="line-833"> */</span>
<span class="source-line-no">834</span><span id="line-834"> public RegionInfo cloneRegionInfo(final RegionInfo snapshotRegionInfo) {</span>
<span class="source-line-no">835</span><span id="line-835"> return cloneRegionInfo(tableDesc.getTableName(), snapshotRegionInfo);</span>
<span class="source-line-no">836</span><span id="line-836"> }</span>
<span class="source-line-no">837</span><span id="line-837"></span>
<span class="source-line-no">838</span><span id="line-838"> public static RegionInfo cloneRegionInfo(TableName tableName, RegionInfo snapshotRegionInfo) {</span>
<span class="source-line-no">839</span><span id="line-839"> return RegionInfoBuilder.newBuilder(tableName).setStartKey(snapshotRegionInfo.getStartKey())</span>
<span class="source-line-no">840</span><span id="line-840"> .setEndKey(snapshotRegionInfo.getEndKey()).setSplit(snapshotRegionInfo.isSplit())</span>
<span class="source-line-no">841</span><span id="line-841"> .setRegionId(snapshotRegionInfo.getRegionId()).setOffline(snapshotRegionInfo.isOffline())</span>
<span class="source-line-no">842</span><span id="line-842"> .build();</span>
<span class="source-line-no">843</span><span id="line-843"> }</span>
<span class="source-line-no">844</span><span id="line-844"></span>
<span class="source-line-no">845</span><span id="line-845"> /** Returns the set of the regions contained in the table */</span>
<span class="source-line-no">846</span><span id="line-846"> private List&lt;RegionInfo&gt; getTableRegions() throws IOException {</span>
<span class="source-line-no">847</span><span id="line-847"> LOG.debug("get table regions: " + tableDir);</span>
<span class="source-line-no">848</span><span id="line-848"> FileStatus[] regionDirs =</span>
<span class="source-line-no">849</span><span id="line-849"> CommonFSUtils.listStatus(fs, tableDir, new FSUtils.RegionDirFilter(fs));</span>
<span class="source-line-no">850</span><span id="line-850"> if (regionDirs == null) {</span>
<span class="source-line-no">851</span><span id="line-851"> return null;</span>
<span class="source-line-no">852</span><span id="line-852"> }</span>
<span class="source-line-no">853</span><span id="line-853"></span>
<span class="source-line-no">854</span><span id="line-854"> List&lt;RegionInfo&gt; regions = new ArrayList&lt;&gt;(regionDirs.length);</span>
<span class="source-line-no">855</span><span id="line-855"> for (int i = 0; i &lt; regionDirs.length; ++i) {</span>
<span class="source-line-no">856</span><span id="line-856"> RegionInfo hri = HRegionFileSystem.loadRegionInfoFileContent(fs, regionDirs[i].getPath());</span>
<span class="source-line-no">857</span><span id="line-857"> regions.add(hri);</span>
<span class="source-line-no">858</span><span id="line-858"> }</span>
<span class="source-line-no">859</span><span id="line-859"> LOG.debug("found " + regions.size() + " regions for table="</span>
<span class="source-line-no">860</span><span id="line-860"> + tableDesc.getTableName().getNameAsString());</span>
<span class="source-line-no">861</span><span id="line-861"> return regions;</span>
<span class="source-line-no">862</span><span id="line-862"> }</span>
<span class="source-line-no">863</span><span id="line-863"></span>
<span class="source-line-no">864</span><span id="line-864"> /**</span>
<span class="source-line-no">865</span><span id="line-865"> * Copy the snapshot files for a snapshot scanner, discards meta changes.</span>
<span class="source-line-no">866</span><span id="line-866"> */</span>
<span class="source-line-no">867</span><span id="line-867"> public static RestoreMetaChanges copySnapshotForScanner(Configuration conf, FileSystem fs,</span>
<span class="source-line-no">868</span><span id="line-868"> Path rootDir, Path restoreDir, String snapshotName) throws IOException {</span>
<span class="source-line-no">869</span><span id="line-869"> // ensure that restore dir is not under root dir</span>
<span class="source-line-no">870</span><span id="line-870"> if (!restoreDir.getFileSystem(conf).getUri().equals(rootDir.getFileSystem(conf).getUri())) {</span>
<span class="source-line-no">871</span><span id="line-871"> throw new IllegalArgumentException(</span>
<span class="source-line-no">872</span><span id="line-872"> "Filesystems for restore directory and HBase root " + "directory should be the same");</span>
<span class="source-line-no">873</span><span id="line-873"> }</span>
<span class="source-line-no">874</span><span id="line-874"> if (restoreDir.toUri().getPath().startsWith(rootDir.toUri().getPath() + "/")) {</span>
<span class="source-line-no">875</span><span id="line-875"> throw new IllegalArgumentException("Restore directory cannot be a sub directory of HBase "</span>
<span class="source-line-no">876</span><span id="line-876"> + "root directory. RootDir: " + rootDir + ", restoreDir: " + restoreDir);</span>
<span class="source-line-no">877</span><span id="line-877"> }</span>
<span class="source-line-no">878</span><span id="line-878"></span>
<span class="source-line-no">879</span><span id="line-879"> Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, rootDir);</span>
<span class="source-line-no">880</span><span id="line-880"> SnapshotDescription snapshotDesc = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);</span>
<span class="source-line-no">881</span><span id="line-881"> // check if the snapshot is expired.</span>
<span class="source-line-no">882</span><span id="line-882"> boolean isExpired = SnapshotDescriptionUtils.isExpiredSnapshot(snapshotDesc.getTtl(),</span>
<span class="source-line-no">883</span><span id="line-883"> snapshotDesc.getCreationTime(), EnvironmentEdgeManager.currentTime());</span>
<span class="source-line-no">884</span><span id="line-884"> if (isExpired) {</span>
<span class="source-line-no">885</span><span id="line-885"> throw new SnapshotTTLExpiredException(ProtobufUtil.createSnapshotDesc(snapshotDesc));</span>
<span class="source-line-no">886</span><span id="line-886"> }</span>
<span class="source-line-no">887</span><span id="line-887"> SnapshotManifest manifest = SnapshotManifest.open(conf, fs, snapshotDir, snapshotDesc);</span>
<span class="source-line-no">888</span><span id="line-888"></span>
<span class="source-line-no">889</span><span id="line-889"> MonitoredTask status = TaskMonitor.get()</span>
<span class="source-line-no">890</span><span id="line-890"> .createStatus("Restoring snapshot '" + snapshotName + "' to directory " + restoreDir);</span>
<span class="source-line-no">891</span><span id="line-891"> ForeignExceptionDispatcher monitor = new ForeignExceptionDispatcher();</span>
<span class="source-line-no">892</span><span id="line-892"></span>
<span class="source-line-no">893</span><span id="line-893"> // we send createBackRefs=false so that restored hfiles do not create back reference links</span>
<span class="source-line-no">894</span><span id="line-894"> // in the base hbase root dir.</span>
<span class="source-line-no">895</span><span id="line-895"> RestoreSnapshotHelper helper = new RestoreSnapshotHelper(conf, fs, manifest,</span>
<span class="source-line-no">896</span><span id="line-896"> manifest.getTableDescriptor(), restoreDir, monitor, status, false);</span>
<span class="source-line-no">897</span><span id="line-897"> RestoreMetaChanges metaChanges = helper.restoreHdfsRegions(); // TODO: parallelize.</span>
<span class="source-line-no">898</span><span id="line-898"></span>
<span class="source-line-no">899</span><span id="line-899"> if (LOG.isDebugEnabled()) {</span>
<span class="source-line-no">900</span><span id="line-900"> LOG.debug("Restored table dir:" + restoreDir);</span>
<span class="source-line-no">901</span><span id="line-901"> CommonFSUtils.logFileSystemState(fs, restoreDir, LOG);</span>
<span class="source-line-no">902</span><span id="line-902"> }</span>
<span class="source-line-no">903</span><span id="line-903"> return metaChanges;</span>
<span class="source-line-no">904</span><span id="line-904"> }</span>
<span class="source-line-no">905</span><span id="line-905"></span>
<span class="source-line-no">906</span><span id="line-906"> public static void restoreSnapshotAcl(SnapshotDescription snapshot, TableName newTableName,</span>
<span class="source-line-no">907</span><span id="line-907"> Configuration conf) throws IOException {</span>
<span class="source-line-no">908</span><span id="line-908"> if (snapshot.hasUsersAndPermissions() &amp;&amp; snapshot.getUsersAndPermissions() != null) {</span>
<span class="source-line-no">909</span><span id="line-909"> LOG.info("Restore snapshot acl to table. snapshot: " + snapshot + ", table: " + newTableName);</span>
<span class="source-line-no">910</span><span id="line-910"> ListMultimap&lt;String, Permission&gt; perms =</span>
<span class="source-line-no">911</span><span id="line-911"> ShadedAccessControlUtil.toUserTablePermissions(snapshot.getUsersAndPermissions());</span>
<span class="source-line-no">912</span><span id="line-912"> try (Connection conn = ConnectionFactory.createConnection(conf)) {</span>
<span class="source-line-no">913</span><span id="line-913"> for (Entry&lt;String, Permission&gt; e : perms.entries()) {</span>
<span class="source-line-no">914</span><span id="line-914"> String user = e.getKey();</span>
<span class="source-line-no">915</span><span id="line-915"> TablePermission tablePerm = (TablePermission) e.getValue();</span>
<span class="source-line-no">916</span><span id="line-916"> AccessControlClient.grant(conn, newTableName, user, tablePerm.getFamily(),</span>
<span class="source-line-no">917</span><span id="line-917"> tablePerm.getQualifier(), tablePerm.getActions());</span>
<span class="source-line-no">918</span><span id="line-918"> }</span>
<span class="source-line-no">919</span><span id="line-919"> } catch (Throwable e) {</span>
<span class="source-line-no">920</span><span id="line-920"> throw new IOException("Grant acl into newly creatd table failed. snapshot: " + snapshot</span>
<span class="source-line-no">921</span><span id="line-921"> + ", table: " + newTableName, e);</span>
<span class="source-line-no">922</span><span id="line-922"> }</span>
<span class="source-line-no">923</span><span id="line-923"> }</span>
<span class="source-line-no">924</span><span id="line-924"> }</span>
<span class="source-line-no">925</span><span id="line-925">}</span>
</pre>
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