blob: 10ec090f593ccf85be40551516e1038e9431730b [file]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.io;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.regex.Matcher;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.regex.Pattern;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.conf.Configuration;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.fs.FileSystem;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.fs.Path;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.HConstants;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.TableName;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.mob.MobConstants;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.HFileArchiveUtil;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>/**<a name="line.42"></a>
<span class="sourceLineNo">043</span> * HFileLink describes a link to an hfile.<a name="line.43"></a>
<span class="sourceLineNo">044</span> *<a name="line.44"></a>
<span class="sourceLineNo">045</span> * An hfile can be served from a region or from the hfile archive directory (/hbase/.archive)<a name="line.45"></a>
<span class="sourceLineNo">046</span> * HFileLink allows to access the referenced hfile regardless of the location where it is.<a name="line.46"></a>
<span class="sourceLineNo">047</span> *<a name="line.47"></a>
<span class="sourceLineNo">048</span> * &lt;p&gt;Searches for hfiles in the following order and locations:<a name="line.48"></a>
<span class="sourceLineNo">049</span> * &lt;ul&gt;<a name="line.49"></a>
<span class="sourceLineNo">050</span> * &lt;li&gt;/hbase/table/region/cf/hfile&lt;/li&gt;<a name="line.50"></a>
<span class="sourceLineNo">051</span> * &lt;li&gt;/hbase/.archive/table/region/cf/hfile&lt;/li&gt;<a name="line.51"></a>
<span class="sourceLineNo">052</span> * &lt;/ul&gt;<a name="line.52"></a>
<span class="sourceLineNo">053</span> *<a name="line.53"></a>
<span class="sourceLineNo">054</span> * The link checks first in the original path if it is not present<a name="line.54"></a>
<span class="sourceLineNo">055</span> * it fallbacks to the archived path.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span>@InterfaceAudience.Private<a name="line.57"></a>
<span class="sourceLineNo">058</span>@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="EQ_DOESNT_OVERRIDE_EQUALS",<a name="line.58"></a>
<span class="sourceLineNo">059</span> justification="To be fixed but warning suppressed for now")<a name="line.59"></a>
<span class="sourceLineNo">060</span>public class HFileLink extends FileLink {<a name="line.60"></a>
<span class="sourceLineNo">061</span> private static final Logger LOG = LoggerFactory.getLogger(HFileLink.class);<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> /**<a name="line.63"></a>
<span class="sourceLineNo">064</span> * A non-capture group, for HFileLink, so that this can be embedded.<a name="line.64"></a>
<span class="sourceLineNo">065</span> * The HFileLink describe a link to an hfile in a different table/region<a name="line.65"></a>
<span class="sourceLineNo">066</span> * and the name is in the form: table=region-hfile.<a name="line.66"></a>
<span class="sourceLineNo">067</span> * &lt;p&gt;<a name="line.67"></a>
<span class="sourceLineNo">068</span> * Table name is ([\p{IsAlphabetic}\p{Digit}][\p{IsAlphabetic}\p{Digit}.-]*), so '=' is an invalid<a name="line.68"></a>
<span class="sourceLineNo">069</span> * character for the table name.<a name="line.69"></a>
<span class="sourceLineNo">070</span> * Region name is ([a-f0-9]+), so '-' is an invalid character for the region name.<a name="line.70"></a>
<span class="sourceLineNo">071</span> * HFile is ([0-9a-f]+(?:_SeqId_[0-9]+_)?) covering the plain hfiles (uuid)<a name="line.71"></a>
<span class="sourceLineNo">072</span> * and the bulk loaded (_SeqId_[0-9]+_) hfiles.<a name="line.72"></a>
<span class="sourceLineNo">073</span> */<a name="line.73"></a>
<span class="sourceLineNo">074</span> public static final String LINK_NAME_REGEX =<a name="line.74"></a>
<span class="sourceLineNo">075</span> String.format("(?:(?:%s=)?)%s=%s-%s",<a name="line.75"></a>
<span class="sourceLineNo">076</span> TableName.VALID_NAMESPACE_REGEX, TableName.VALID_TABLE_QUALIFIER_REGEX,<a name="line.76"></a>
<span class="sourceLineNo">077</span> RegionInfoBuilder.ENCODED_REGION_NAME_REGEX, StoreFileInfo.HFILE_NAME_REGEX);<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> /** Define the HFile Link name parser in the form of: table=region-hfile */<a name="line.79"></a>
<span class="sourceLineNo">080</span> //made package private for testing<a name="line.80"></a>
<span class="sourceLineNo">081</span> static final Pattern LINK_NAME_PATTERN =<a name="line.81"></a>
<span class="sourceLineNo">082</span> Pattern.compile(String.format("^(?:(%s)(?:\\=))?(%s)=(%s)-(%s)$",<a name="line.82"></a>
<span class="sourceLineNo">083</span> TableName.VALID_NAMESPACE_REGEX, TableName.VALID_TABLE_QUALIFIER_REGEX,<a name="line.83"></a>
<span class="sourceLineNo">084</span> RegionInfoBuilder.ENCODED_REGION_NAME_REGEX, StoreFileInfo.HFILE_NAME_REGEX));<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> /**<a name="line.86"></a>
<span class="sourceLineNo">087</span> * The pattern should be used for hfile and reference links<a name="line.87"></a>
<span class="sourceLineNo">088</span> * that can be found in /hbase/table/region/family/<a name="line.88"></a>
<span class="sourceLineNo">089</span> */<a name="line.89"></a>
<span class="sourceLineNo">090</span> private static final Pattern REF_OR_HFILE_LINK_PATTERN =<a name="line.90"></a>
<span class="sourceLineNo">091</span> Pattern.compile(String.format("^(?:(%s)(?:=))?(%s)=(%s)-(.+)$",<a name="line.91"></a>
<span class="sourceLineNo">092</span> TableName.VALID_NAMESPACE_REGEX, TableName.VALID_TABLE_QUALIFIER_REGEX,<a name="line.92"></a>
<span class="sourceLineNo">093</span> RegionInfoBuilder.ENCODED_REGION_NAME_REGEX));<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> private final Path archivePath;<a name="line.95"></a>
<span class="sourceLineNo">096</span> private final Path originPath;<a name="line.96"></a>
<span class="sourceLineNo">097</span> private final Path mobPath;<a name="line.97"></a>
<span class="sourceLineNo">098</span> private final Path tempPath;<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span> /**<a name="line.100"></a>
<span class="sourceLineNo">101</span> * Dead simple hfile link constructor<a name="line.101"></a>
<span class="sourceLineNo">102</span> */<a name="line.102"></a>
<span class="sourceLineNo">103</span> public HFileLink(final Path originPath, final Path tempPath, final Path mobPath,<a name="line.103"></a>
<span class="sourceLineNo">104</span> final Path archivePath) {<a name="line.104"></a>
<span class="sourceLineNo">105</span> this.tempPath = tempPath;<a name="line.105"></a>
<span class="sourceLineNo">106</span> this.originPath = originPath;<a name="line.106"></a>
<span class="sourceLineNo">107</span> this.mobPath = mobPath;<a name="line.107"></a>
<span class="sourceLineNo">108</span> this.archivePath = archivePath;<a name="line.108"></a>
<span class="sourceLineNo">109</span> setLocations(originPath, tempPath, mobPath, archivePath);<a name="line.109"></a>
<span class="sourceLineNo">110</span> }<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span><a name="line.112"></a>
<span class="sourceLineNo">113</span> /**<a name="line.113"></a>
<span class="sourceLineNo">114</span> * @param conf {@link Configuration} from which to extract specific archive locations<a name="line.114"></a>
<span class="sourceLineNo">115</span> * @param hFileLinkPattern The path ending with a HFileLink pattern. (table=region-hfile)<a name="line.115"></a>
<span class="sourceLineNo">116</span> * @throws IOException on unexpected error.<a name="line.116"></a>
<span class="sourceLineNo">117</span> */<a name="line.117"></a>
<span class="sourceLineNo">118</span> public static final HFileLink buildFromHFileLinkPattern(Configuration conf, Path hFileLinkPattern)<a name="line.118"></a>
<span class="sourceLineNo">119</span> throws IOException {<a name="line.119"></a>
<span class="sourceLineNo">120</span> return buildFromHFileLinkPattern(FSUtils.getRootDir(conf),<a name="line.120"></a>
<span class="sourceLineNo">121</span> HFileArchiveUtil.getArchivePath(conf), hFileLinkPattern);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> /**<a name="line.126"></a>
<span class="sourceLineNo">127</span> * @param rootDir Path to the root directory where hbase files are stored<a name="line.127"></a>
<span class="sourceLineNo">128</span> * @param archiveDir Path to the hbase archive directory<a name="line.128"></a>
<span class="sourceLineNo">129</span> * @param hFileLinkPattern The path of the HFile Link.<a name="line.129"></a>
<span class="sourceLineNo">130</span> */<a name="line.130"></a>
<span class="sourceLineNo">131</span> public final static HFileLink buildFromHFileLinkPattern(final Path rootDir,<a name="line.131"></a>
<span class="sourceLineNo">132</span> final Path archiveDir,<a name="line.132"></a>
<span class="sourceLineNo">133</span> final Path hFileLinkPattern) {<a name="line.133"></a>
<span class="sourceLineNo">134</span> Path hfilePath = getHFileLinkPatternRelativePath(hFileLinkPattern);<a name="line.134"></a>
<span class="sourceLineNo">135</span> Path tempPath = new Path(new Path(rootDir, HConstants.HBASE_TEMP_DIRECTORY), hfilePath);<a name="line.135"></a>
<span class="sourceLineNo">136</span> Path originPath = new Path(rootDir, hfilePath);<a name="line.136"></a>
<span class="sourceLineNo">137</span> Path mobPath = new Path(new Path(rootDir, MobConstants.MOB_DIR_NAME), hfilePath);<a name="line.137"></a>
<span class="sourceLineNo">138</span> Path archivePath = new Path(archiveDir, hfilePath);<a name="line.138"></a>
<span class="sourceLineNo">139</span> return new HFileLink(originPath, tempPath, mobPath, archivePath);<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span> /**<a name="line.142"></a>
<span class="sourceLineNo">143</span> * Create an HFileLink relative path for the table/region/family/hfile location<a name="line.143"></a>
<span class="sourceLineNo">144</span> * @param table Table name<a name="line.144"></a>
<span class="sourceLineNo">145</span> * @param region Region Name<a name="line.145"></a>
<span class="sourceLineNo">146</span> * @param family Family Name<a name="line.146"></a>
<span class="sourceLineNo">147</span> * @param hfile HFile Name<a name="line.147"></a>
<span class="sourceLineNo">148</span> * @return the relative Path to open the specified table/region/family/hfile link<a name="line.148"></a>
<span class="sourceLineNo">149</span> */<a name="line.149"></a>
<span class="sourceLineNo">150</span> public static Path createPath(final TableName table, final String region,<a name="line.150"></a>
<span class="sourceLineNo">151</span> final String family, final String hfile) {<a name="line.151"></a>
<span class="sourceLineNo">152</span> if (HFileLink.isHFileLink(hfile)) {<a name="line.152"></a>
<span class="sourceLineNo">153</span> return new Path(family, hfile);<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span> return new Path(family, HFileLink.createHFileLinkName(table, region, hfile));<a name="line.155"></a>
<span class="sourceLineNo">156</span> }<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span> /**<a name="line.158"></a>
<span class="sourceLineNo">159</span> * Create an HFileLink instance from table/region/family/hfile location<a name="line.159"></a>
<span class="sourceLineNo">160</span> * @param conf {@link Configuration} from which to extract specific archive locations<a name="line.160"></a>
<span class="sourceLineNo">161</span> * @param table Table name<a name="line.161"></a>
<span class="sourceLineNo">162</span> * @param region Region Name<a name="line.162"></a>
<span class="sourceLineNo">163</span> * @param family Family Name<a name="line.163"></a>
<span class="sourceLineNo">164</span> * @param hfile HFile Name<a name="line.164"></a>
<span class="sourceLineNo">165</span> * @return Link to the file with the specified table/region/family/hfile location<a name="line.165"></a>
<span class="sourceLineNo">166</span> * @throws IOException on unexpected error.<a name="line.166"></a>
<span class="sourceLineNo">167</span> */<a name="line.167"></a>
<span class="sourceLineNo">168</span> public static HFileLink build(final Configuration conf, final TableName table,<a name="line.168"></a>
<span class="sourceLineNo">169</span> final String region, final String family, final String hfile)<a name="line.169"></a>
<span class="sourceLineNo">170</span> throws IOException {<a name="line.170"></a>
<span class="sourceLineNo">171</span> return HFileLink.buildFromHFileLinkPattern(conf, createPath(table, region, family, hfile));<a name="line.171"></a>
<span class="sourceLineNo">172</span> }<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span> /**<a name="line.174"></a>
<span class="sourceLineNo">175</span> * @return the origin path of the hfile.<a name="line.175"></a>
<span class="sourceLineNo">176</span> */<a name="line.176"></a>
<span class="sourceLineNo">177</span> public Path getOriginPath() {<a name="line.177"></a>
<span class="sourceLineNo">178</span> return this.originPath;<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span> /**<a name="line.181"></a>
<span class="sourceLineNo">182</span> * @return the path of the archived hfile.<a name="line.182"></a>
<span class="sourceLineNo">183</span> */<a name="line.183"></a>
<span class="sourceLineNo">184</span> public Path getArchivePath() {<a name="line.184"></a>
<span class="sourceLineNo">185</span> return this.archivePath;<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span> /**<a name="line.188"></a>
<span class="sourceLineNo">189</span> * @return the path of the mob hfiles.<a name="line.189"></a>
<span class="sourceLineNo">190</span> */<a name="line.190"></a>
<span class="sourceLineNo">191</span> public Path getMobPath() {<a name="line.191"></a>
<span class="sourceLineNo">192</span> return this.mobPath;<a name="line.192"></a>
<span class="sourceLineNo">193</span> }<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span> /**<a name="line.195"></a>
<span class="sourceLineNo">196</span> * @param path Path to check.<a name="line.196"></a>
<span class="sourceLineNo">197</span> * @return True if the path is a HFileLink.<a name="line.197"></a>
<span class="sourceLineNo">198</span> */<a name="line.198"></a>
<span class="sourceLineNo">199</span> public static boolean isHFileLink(final Path path) {<a name="line.199"></a>
<span class="sourceLineNo">200</span> return isHFileLink(path.getName());<a name="line.200"></a>
<span class="sourceLineNo">201</span> }<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span> /**<a name="line.204"></a>
<span class="sourceLineNo">205</span> * @param fileName File name to check.<a name="line.205"></a>
<span class="sourceLineNo">206</span> * @return True if the path is a HFileLink.<a name="line.206"></a>
<span class="sourceLineNo">207</span> */<a name="line.207"></a>
<span class="sourceLineNo">208</span> public static boolean isHFileLink(String fileName) {<a name="line.208"></a>
<span class="sourceLineNo">209</span> Matcher m = LINK_NAME_PATTERN.matcher(fileName);<a name="line.209"></a>
<span class="sourceLineNo">210</span> if (!m.matches()) return false;<a name="line.210"></a>
<span class="sourceLineNo">211</span> return m.groupCount() &gt; 2 &amp;&amp; m.group(4) != null &amp;&amp; m.group(3) != null &amp;&amp; m.group(2) != null;<a name="line.211"></a>
<span class="sourceLineNo">212</span> }<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span> /**<a name="line.214"></a>
<span class="sourceLineNo">215</span> * Convert a HFileLink path to a table relative path.<a name="line.215"></a>
<span class="sourceLineNo">216</span> * e.g. the link: /hbase/test/0123/cf/testtb=4567-abcd<a name="line.216"></a>
<span class="sourceLineNo">217</span> * becomes: /hbase/testtb/4567/cf/abcd<a name="line.217"></a>
<span class="sourceLineNo">218</span> *<a name="line.218"></a>
<span class="sourceLineNo">219</span> * @param path HFileLink path<a name="line.219"></a>
<span class="sourceLineNo">220</span> * @return Relative table path<a name="line.220"></a>
<span class="sourceLineNo">221</span> * @throws IOException on unexpected error.<a name="line.221"></a>
<span class="sourceLineNo">222</span> */<a name="line.222"></a>
<span class="sourceLineNo">223</span> private static Path getHFileLinkPatternRelativePath(final Path path) {<a name="line.223"></a>
<span class="sourceLineNo">224</span> // table=region-hfile<a name="line.224"></a>
<span class="sourceLineNo">225</span> Matcher m = REF_OR_HFILE_LINK_PATTERN.matcher(path.getName());<a name="line.225"></a>
<span class="sourceLineNo">226</span> if (!m.matches()) {<a name="line.226"></a>
<span class="sourceLineNo">227</span> throw new IllegalArgumentException(path.getName() + " is not a valid HFileLink pattern!");<a name="line.227"></a>
<span class="sourceLineNo">228</span> }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span> // Convert the HFileLink name into a real table/region/cf/hfile path.<a name="line.230"></a>
<span class="sourceLineNo">231</span> TableName tableName = TableName.valueOf(m.group(1), m.group(2));<a name="line.231"></a>
<span class="sourceLineNo">232</span> String regionName = m.group(3);<a name="line.232"></a>
<span class="sourceLineNo">233</span> String hfileName = m.group(4);<a name="line.233"></a>
<span class="sourceLineNo">234</span> String familyName = path.getParent().getName();<a name="line.234"></a>
<span class="sourceLineNo">235</span> Path tableDir = FSUtils.getTableDir(new Path("./"), tableName);<a name="line.235"></a>
<span class="sourceLineNo">236</span> return new Path(tableDir, new Path(regionName, new Path(familyName,<a name="line.236"></a>
<span class="sourceLineNo">237</span> hfileName)));<a name="line.237"></a>
<span class="sourceLineNo">238</span> }<a name="line.238"></a>
<span class="sourceLineNo">239</span><a name="line.239"></a>
<span class="sourceLineNo">240</span> /**<a name="line.240"></a>
<span class="sourceLineNo">241</span> * Get the HFile name of the referenced link<a name="line.241"></a>
<span class="sourceLineNo">242</span> *<a name="line.242"></a>
<span class="sourceLineNo">243</span> * @param fileName HFileLink file name<a name="line.243"></a>
<span class="sourceLineNo">244</span> * @return the name of the referenced HFile<a name="line.244"></a>
<span class="sourceLineNo">245</span> */<a name="line.245"></a>
<span class="sourceLineNo">246</span> public static String getReferencedHFileName(final String fileName) {<a name="line.246"></a>
<span class="sourceLineNo">247</span> Matcher m = REF_OR_HFILE_LINK_PATTERN.matcher(fileName);<a name="line.247"></a>
<span class="sourceLineNo">248</span> if (!m.matches()) {<a name="line.248"></a>
<span class="sourceLineNo">249</span> throw new IllegalArgumentException(fileName + " is not a valid HFileLink name!");<a name="line.249"></a>
<span class="sourceLineNo">250</span> }<a name="line.250"></a>
<span class="sourceLineNo">251</span> return(m.group(4));<a name="line.251"></a>
<span class="sourceLineNo">252</span> }<a name="line.252"></a>
<span class="sourceLineNo">253</span><a name="line.253"></a>
<span class="sourceLineNo">254</span> /**<a name="line.254"></a>
<span class="sourceLineNo">255</span> * Get the Region name of the referenced link<a name="line.255"></a>
<span class="sourceLineNo">256</span> *<a name="line.256"></a>
<span class="sourceLineNo">257</span> * @param fileName HFileLink file name<a name="line.257"></a>
<span class="sourceLineNo">258</span> * @return the name of the referenced Region<a name="line.258"></a>
<span class="sourceLineNo">259</span> */<a name="line.259"></a>
<span class="sourceLineNo">260</span> public static String getReferencedRegionName(final String fileName) {<a name="line.260"></a>
<span class="sourceLineNo">261</span> Matcher m = REF_OR_HFILE_LINK_PATTERN.matcher(fileName);<a name="line.261"></a>
<span class="sourceLineNo">262</span> if (!m.matches()) {<a name="line.262"></a>
<span class="sourceLineNo">263</span> throw new IllegalArgumentException(fileName + " is not a valid HFileLink name!");<a name="line.263"></a>
<span class="sourceLineNo">264</span> }<a name="line.264"></a>
<span class="sourceLineNo">265</span> return(m.group(3));<a name="line.265"></a>
<span class="sourceLineNo">266</span> }<a name="line.266"></a>
<span class="sourceLineNo">267</span><a name="line.267"></a>
<span class="sourceLineNo">268</span> /**<a name="line.268"></a>
<span class="sourceLineNo">269</span> * Get the Table name of the referenced link<a name="line.269"></a>
<span class="sourceLineNo">270</span> *<a name="line.270"></a>
<span class="sourceLineNo">271</span> * @param fileName HFileLink file name<a name="line.271"></a>
<span class="sourceLineNo">272</span> * @return the name of the referenced Table<a name="line.272"></a>
<span class="sourceLineNo">273</span> */<a name="line.273"></a>
<span class="sourceLineNo">274</span> public static TableName getReferencedTableName(final String fileName) {<a name="line.274"></a>
<span class="sourceLineNo">275</span> Matcher m = REF_OR_HFILE_LINK_PATTERN.matcher(fileName);<a name="line.275"></a>
<span class="sourceLineNo">276</span> if (!m.matches()) {<a name="line.276"></a>
<span class="sourceLineNo">277</span> throw new IllegalArgumentException(fileName + " is not a valid HFileLink name!");<a name="line.277"></a>
<span class="sourceLineNo">278</span> }<a name="line.278"></a>
<span class="sourceLineNo">279</span> return(TableName.valueOf(m.group(1), m.group(2)));<a name="line.279"></a>
<span class="sourceLineNo">280</span> }<a name="line.280"></a>
<span class="sourceLineNo">281</span><a name="line.281"></a>
<span class="sourceLineNo">282</span> /**<a name="line.282"></a>
<span class="sourceLineNo">283</span> * Create a new HFileLink name<a name="line.283"></a>
<span class="sourceLineNo">284</span> *<a name="line.284"></a>
<span class="sourceLineNo">285</span> * @param hfileRegionInfo - Linked HFile Region Info<a name="line.285"></a>
<span class="sourceLineNo">286</span> * @param hfileName - Linked HFile name<a name="line.286"></a>
<span class="sourceLineNo">287</span> * @return file name of the HFile Link<a name="line.287"></a>
<span class="sourceLineNo">288</span> */<a name="line.288"></a>
<span class="sourceLineNo">289</span> public static String createHFileLinkName(final RegionInfo hfileRegionInfo,<a name="line.289"></a>
<span class="sourceLineNo">290</span> final String hfileName) {<a name="line.290"></a>
<span class="sourceLineNo">291</span> return createHFileLinkName(hfileRegionInfo.getTable(),<a name="line.291"></a>
<span class="sourceLineNo">292</span> hfileRegionInfo.getEncodedName(), hfileName);<a name="line.292"></a>
<span class="sourceLineNo">293</span> }<a name="line.293"></a>
<span class="sourceLineNo">294</span><a name="line.294"></a>
<span class="sourceLineNo">295</span> /**<a name="line.295"></a>
<span class="sourceLineNo">296</span> * Create a new HFileLink name<a name="line.296"></a>
<span class="sourceLineNo">297</span> *<a name="line.297"></a>
<span class="sourceLineNo">298</span> * @param tableName - Linked HFile table name<a name="line.298"></a>
<span class="sourceLineNo">299</span> * @param regionName - Linked HFile region name<a name="line.299"></a>
<span class="sourceLineNo">300</span> * @param hfileName - Linked HFile name<a name="line.300"></a>
<span class="sourceLineNo">301</span> * @return file name of the HFile Link<a name="line.301"></a>
<span class="sourceLineNo">302</span> */<a name="line.302"></a>
<span class="sourceLineNo">303</span> public static String createHFileLinkName(final TableName tableName,<a name="line.303"></a>
<span class="sourceLineNo">304</span> final String regionName, final String hfileName) {<a name="line.304"></a>
<span class="sourceLineNo">305</span> String s = String.format("%s=%s-%s",<a name="line.305"></a>
<span class="sourceLineNo">306</span> tableName.getNameAsString().replace(TableName.NAMESPACE_DELIM, '='),<a name="line.306"></a>
<span class="sourceLineNo">307</span> regionName, hfileName);<a name="line.307"></a>
<span class="sourceLineNo">308</span> return s;<a name="line.308"></a>
<span class="sourceLineNo">309</span> }<a name="line.309"></a>
<span class="sourceLineNo">310</span><a name="line.310"></a>
<span class="sourceLineNo">311</span> /**<a name="line.311"></a>
<span class="sourceLineNo">312</span> * Create a new HFileLink<a name="line.312"></a>
<span class="sourceLineNo">313</span> *<a name="line.313"></a>
<span class="sourceLineNo">314</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.314"></a>
<span class="sourceLineNo">315</span> * to simplify the reference-count and the cleaning process.<a name="line.315"></a>
<span class="sourceLineNo">316</span> *<a name="line.316"></a>
<span class="sourceLineNo">317</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.317"></a>
<span class="sourceLineNo">318</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.318"></a>
<span class="sourceLineNo">319</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.319"></a>
<span class="sourceLineNo">320</span> * @param hfileRegionInfo - Linked HFile Region Info<a name="line.320"></a>
<span class="sourceLineNo">321</span> * @param hfileName - Linked HFile name<a name="line.321"></a>
<span class="sourceLineNo">322</span> * @return true if the file is created, otherwise the file exists.<a name="line.322"></a>
<span class="sourceLineNo">323</span> * @throws IOException on file or parent directory creation failure<a name="line.323"></a>
<span class="sourceLineNo">324</span> */<a name="line.324"></a>
<span class="sourceLineNo">325</span> public static boolean create(final Configuration conf, final FileSystem fs,<a name="line.325"></a>
<span class="sourceLineNo">326</span> final Path dstFamilyPath, final RegionInfo hfileRegionInfo,<a name="line.326"></a>
<span class="sourceLineNo">327</span> final String hfileName) throws IOException {<a name="line.327"></a>
<span class="sourceLineNo">328</span> return create(conf, fs, dstFamilyPath, hfileRegionInfo, hfileName, true);<a name="line.328"></a>
<span class="sourceLineNo">329</span> }<a name="line.329"></a>
<span class="sourceLineNo">330</span><a name="line.330"></a>
<span class="sourceLineNo">331</span> /**<a name="line.331"></a>
<span class="sourceLineNo">332</span> * Create a new HFileLink<a name="line.332"></a>
<span class="sourceLineNo">333</span> *<a name="line.333"></a>
<span class="sourceLineNo">334</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.334"></a>
<span class="sourceLineNo">335</span> * to simplify the reference-count and the cleaning process.<a name="line.335"></a>
<span class="sourceLineNo">336</span> *<a name="line.336"></a>
<span class="sourceLineNo">337</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.337"></a>
<span class="sourceLineNo">338</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.338"></a>
<span class="sourceLineNo">339</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.339"></a>
<span class="sourceLineNo">340</span> * @param hfileRegionInfo - Linked HFile Region Info<a name="line.340"></a>
<span class="sourceLineNo">341</span> * @param hfileName - Linked HFile name<a name="line.341"></a>
<span class="sourceLineNo">342</span> * @param createBackRef - Whether back reference should be created. Defaults to true.<a name="line.342"></a>
<span class="sourceLineNo">343</span> * @return true if the file is created, otherwise the file exists.<a name="line.343"></a>
<span class="sourceLineNo">344</span> * @throws IOException on file or parent directory creation failure<a name="line.344"></a>
<span class="sourceLineNo">345</span> */<a name="line.345"></a>
<span class="sourceLineNo">346</span> public static boolean create(final Configuration conf, final FileSystem fs,<a name="line.346"></a>
<span class="sourceLineNo">347</span> final Path dstFamilyPath, final RegionInfo hfileRegionInfo,<a name="line.347"></a>
<span class="sourceLineNo">348</span> final String hfileName, final boolean createBackRef) throws IOException {<a name="line.348"></a>
<span class="sourceLineNo">349</span> TableName linkedTable = hfileRegionInfo.getTable();<a name="line.349"></a>
<span class="sourceLineNo">350</span> String linkedRegion = hfileRegionInfo.getEncodedName();<a name="line.350"></a>
<span class="sourceLineNo">351</span> return create(conf, fs, dstFamilyPath, linkedTable, linkedRegion, hfileName, createBackRef);<a name="line.351"></a>
<span class="sourceLineNo">352</span> }<a name="line.352"></a>
<span class="sourceLineNo">353</span><a name="line.353"></a>
<span class="sourceLineNo">354</span> /**<a name="line.354"></a>
<span class="sourceLineNo">355</span> * Create a new HFileLink<a name="line.355"></a>
<span class="sourceLineNo">356</span> *<a name="line.356"></a>
<span class="sourceLineNo">357</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.357"></a>
<span class="sourceLineNo">358</span> * to simplify the reference-count and the cleaning process.<a name="line.358"></a>
<span class="sourceLineNo">359</span> *<a name="line.359"></a>
<span class="sourceLineNo">360</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.360"></a>
<span class="sourceLineNo">361</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.361"></a>
<span class="sourceLineNo">362</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.362"></a>
<span class="sourceLineNo">363</span> * @param linkedTable - Linked Table Name<a name="line.363"></a>
<span class="sourceLineNo">364</span> * @param linkedRegion - Linked Region Name<a name="line.364"></a>
<span class="sourceLineNo">365</span> * @param hfileName - Linked HFile name<a name="line.365"></a>
<span class="sourceLineNo">366</span> * @return true if the file is created, otherwise the file exists.<a name="line.366"></a>
<span class="sourceLineNo">367</span> * @throws IOException on file or parent directory creation failure<a name="line.367"></a>
<span class="sourceLineNo">368</span> */<a name="line.368"></a>
<span class="sourceLineNo">369</span> public static boolean create(final Configuration conf, final FileSystem fs,<a name="line.369"></a>
<span class="sourceLineNo">370</span> final Path dstFamilyPath, final TableName linkedTable, final String linkedRegion,<a name="line.370"></a>
<span class="sourceLineNo">371</span> final String hfileName) throws IOException {<a name="line.371"></a>
<span class="sourceLineNo">372</span> return create(conf, fs, dstFamilyPath, linkedTable, linkedRegion, hfileName, true);<a name="line.372"></a>
<span class="sourceLineNo">373</span> }<a name="line.373"></a>
<span class="sourceLineNo">374</span><a name="line.374"></a>
<span class="sourceLineNo">375</span> /**<a name="line.375"></a>
<span class="sourceLineNo">376</span> * Create a new HFileLink<a name="line.376"></a>
<span class="sourceLineNo">377</span> *<a name="line.377"></a>
<span class="sourceLineNo">378</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.378"></a>
<span class="sourceLineNo">379</span> * to simplify the reference-count and the cleaning process.<a name="line.379"></a>
<span class="sourceLineNo">380</span> *<a name="line.380"></a>
<span class="sourceLineNo">381</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.381"></a>
<span class="sourceLineNo">382</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.382"></a>
<span class="sourceLineNo">383</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.383"></a>
<span class="sourceLineNo">384</span> * @param linkedTable - Linked Table Name<a name="line.384"></a>
<span class="sourceLineNo">385</span> * @param linkedRegion - Linked Region Name<a name="line.385"></a>
<span class="sourceLineNo">386</span> * @param hfileName - Linked HFile name<a name="line.386"></a>
<span class="sourceLineNo">387</span> * @param createBackRef - Whether back reference should be created. Defaults to true.<a name="line.387"></a>
<span class="sourceLineNo">388</span> * @return true if the file is created, otherwise the file exists.<a name="line.388"></a>
<span class="sourceLineNo">389</span> * @throws IOException on file or parent directory creation failure<a name="line.389"></a>
<span class="sourceLineNo">390</span> */<a name="line.390"></a>
<span class="sourceLineNo">391</span> public static boolean create(final Configuration conf, final FileSystem fs,<a name="line.391"></a>
<span class="sourceLineNo">392</span> final Path dstFamilyPath, final TableName linkedTable, final String linkedRegion,<a name="line.392"></a>
<span class="sourceLineNo">393</span> final String hfileName, final boolean createBackRef) throws IOException {<a name="line.393"></a>
<span class="sourceLineNo">394</span> String familyName = dstFamilyPath.getName();<a name="line.394"></a>
<span class="sourceLineNo">395</span> String regionName = dstFamilyPath.getParent().getName();<a name="line.395"></a>
<span class="sourceLineNo">396</span> String tableName = FSUtils.getTableName(dstFamilyPath.getParent().getParent())<a name="line.396"></a>
<span class="sourceLineNo">397</span> .getNameAsString();<a name="line.397"></a>
<span class="sourceLineNo">398</span><a name="line.398"></a>
<span class="sourceLineNo">399</span> String name = createHFileLinkName(linkedTable, linkedRegion, hfileName);<a name="line.399"></a>
<span class="sourceLineNo">400</span> String refName = createBackReferenceName(tableName, regionName);<a name="line.400"></a>
<span class="sourceLineNo">401</span><a name="line.401"></a>
<span class="sourceLineNo">402</span> // Make sure the destination directory exists<a name="line.402"></a>
<span class="sourceLineNo">403</span> fs.mkdirs(dstFamilyPath);<a name="line.403"></a>
<span class="sourceLineNo">404</span><a name="line.404"></a>
<span class="sourceLineNo">405</span> // Make sure the FileLink reference directory exists<a name="line.405"></a>
<span class="sourceLineNo">406</span> Path archiveStoreDir = HFileArchiveUtil.getStoreArchivePath(conf,<a name="line.406"></a>
<span class="sourceLineNo">407</span> linkedTable, linkedRegion, familyName);<a name="line.407"></a>
<span class="sourceLineNo">408</span> Path backRefPath = null;<a name="line.408"></a>
<span class="sourceLineNo">409</span> if (createBackRef) {<a name="line.409"></a>
<span class="sourceLineNo">410</span> Path backRefssDir = getBackReferencesDir(archiveStoreDir, hfileName);<a name="line.410"></a>
<span class="sourceLineNo">411</span> fs.mkdirs(backRefssDir);<a name="line.411"></a>
<span class="sourceLineNo">412</span><a name="line.412"></a>
<span class="sourceLineNo">413</span> // Create the reference for the link<a name="line.413"></a>
<span class="sourceLineNo">414</span> backRefPath = new Path(backRefssDir, refName);<a name="line.414"></a>
<span class="sourceLineNo">415</span> fs.createNewFile(backRefPath);<a name="line.415"></a>
<span class="sourceLineNo">416</span> }<a name="line.416"></a>
<span class="sourceLineNo">417</span> try {<a name="line.417"></a>
<span class="sourceLineNo">418</span> // Create the link<a name="line.418"></a>
<span class="sourceLineNo">419</span> return fs.createNewFile(new Path(dstFamilyPath, name));<a name="line.419"></a>
<span class="sourceLineNo">420</span> } catch (IOException e) {<a name="line.420"></a>
<span class="sourceLineNo">421</span> LOG.error("couldn't create the link=" + name + " for " + dstFamilyPath, e);<a name="line.421"></a>
<span class="sourceLineNo">422</span> // Revert the reference if the link creation failed<a name="line.422"></a>
<span class="sourceLineNo">423</span> if (createBackRef) {<a name="line.423"></a>
<span class="sourceLineNo">424</span> fs.delete(backRefPath, false);<a name="line.424"></a>
<span class="sourceLineNo">425</span> }<a name="line.425"></a>
<span class="sourceLineNo">426</span> throw e;<a name="line.426"></a>
<span class="sourceLineNo">427</span> }<a name="line.427"></a>
<span class="sourceLineNo">428</span> }<a name="line.428"></a>
<span class="sourceLineNo">429</span><a name="line.429"></a>
<span class="sourceLineNo">430</span> /**<a name="line.430"></a>
<span class="sourceLineNo">431</span> * Create a new HFileLink starting from a hfileLink name<a name="line.431"></a>
<span class="sourceLineNo">432</span> *<a name="line.432"></a>
<span class="sourceLineNo">433</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.433"></a>
<span class="sourceLineNo">434</span> * to simplify the reference-count and the cleaning process.<a name="line.434"></a>
<span class="sourceLineNo">435</span> *<a name="line.435"></a>
<span class="sourceLineNo">436</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.436"></a>
<span class="sourceLineNo">437</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.437"></a>
<span class="sourceLineNo">438</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.438"></a>
<span class="sourceLineNo">439</span> * @param hfileLinkName - HFileLink name (it contains hfile-region-table)<a name="line.439"></a>
<span class="sourceLineNo">440</span> * @return true if the file is created, otherwise the file exists.<a name="line.440"></a>
<span class="sourceLineNo">441</span> * @throws IOException on file or parent directory creation failure<a name="line.441"></a>
<span class="sourceLineNo">442</span> */<a name="line.442"></a>
<span class="sourceLineNo">443</span> public static boolean createFromHFileLink(final Configuration conf, final FileSystem fs,<a name="line.443"></a>
<span class="sourceLineNo">444</span> final Path dstFamilyPath, final String hfileLinkName)<a name="line.444"></a>
<span class="sourceLineNo">445</span> throws IOException {<a name="line.445"></a>
<span class="sourceLineNo">446</span> return createFromHFileLink(conf, fs, dstFamilyPath, hfileLinkName, true);<a name="line.446"></a>
<span class="sourceLineNo">447</span> }<a name="line.447"></a>
<span class="sourceLineNo">448</span><a name="line.448"></a>
<span class="sourceLineNo">449</span> /**<a name="line.449"></a>
<span class="sourceLineNo">450</span> * Create a new HFileLink starting from a hfileLink name<a name="line.450"></a>
<span class="sourceLineNo">451</span> *<a name="line.451"></a>
<span class="sourceLineNo">452</span> * &lt;p&gt;It also adds a back-reference to the hfile back-reference directory<a name="line.452"></a>
<span class="sourceLineNo">453</span> * to simplify the reference-count and the cleaning process.<a name="line.453"></a>
<span class="sourceLineNo">454</span> *<a name="line.454"></a>
<span class="sourceLineNo">455</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.455"></a>
<span class="sourceLineNo">456</span> * @param fs {@link FileSystem} on which to write the HFileLink<a name="line.456"></a>
<span class="sourceLineNo">457</span> * @param dstFamilyPath - Destination path (table/region/cf/)<a name="line.457"></a>
<span class="sourceLineNo">458</span> * @param hfileLinkName - HFileLink name (it contains hfile-region-table)<a name="line.458"></a>
<span class="sourceLineNo">459</span> * @param createBackRef - Whether back reference should be created. Defaults to true.<a name="line.459"></a>
<span class="sourceLineNo">460</span> * @return true if the file is created, otherwise the file exists.<a name="line.460"></a>
<span class="sourceLineNo">461</span> * @throws IOException on file or parent directory creation failure<a name="line.461"></a>
<span class="sourceLineNo">462</span> */<a name="line.462"></a>
<span class="sourceLineNo">463</span> public static boolean createFromHFileLink(final Configuration conf, final FileSystem fs,<a name="line.463"></a>
<span class="sourceLineNo">464</span> final Path dstFamilyPath, final String hfileLinkName, final boolean createBackRef)<a name="line.464"></a>
<span class="sourceLineNo">465</span> throws IOException {<a name="line.465"></a>
<span class="sourceLineNo">466</span> Matcher m = LINK_NAME_PATTERN.matcher(hfileLinkName);<a name="line.466"></a>
<span class="sourceLineNo">467</span> if (!m.matches()) {<a name="line.467"></a>
<span class="sourceLineNo">468</span> throw new IllegalArgumentException(hfileLinkName + " is not a valid HFileLink name!");<a name="line.468"></a>
<span class="sourceLineNo">469</span> }<a name="line.469"></a>
<span class="sourceLineNo">470</span> return create(conf, fs, dstFamilyPath, TableName.valueOf(m.group(1), m.group(2)),<a name="line.470"></a>
<span class="sourceLineNo">471</span> m.group(3), m.group(4), createBackRef);<a name="line.471"></a>
<span class="sourceLineNo">472</span> }<a name="line.472"></a>
<span class="sourceLineNo">473</span><a name="line.473"></a>
<span class="sourceLineNo">474</span> /**<a name="line.474"></a>
<span class="sourceLineNo">475</span> * Create the back reference name<a name="line.475"></a>
<span class="sourceLineNo">476</span> */<a name="line.476"></a>
<span class="sourceLineNo">477</span> //package-private for testing<a name="line.477"></a>
<span class="sourceLineNo">478</span> static String createBackReferenceName(final String tableNameStr,<a name="line.478"></a>
<span class="sourceLineNo">479</span> final String regionName) {<a name="line.479"></a>
<span class="sourceLineNo">480</span><a name="line.480"></a>
<span class="sourceLineNo">481</span> return regionName + "." + tableNameStr.replace(TableName.NAMESPACE_DELIM, '=');<a name="line.481"></a>
<span class="sourceLineNo">482</span> }<a name="line.482"></a>
<span class="sourceLineNo">483</span><a name="line.483"></a>
<span class="sourceLineNo">484</span> /**<a name="line.484"></a>
<span class="sourceLineNo">485</span> * Get the full path of the HFile referenced by the back reference<a name="line.485"></a>
<span class="sourceLineNo">486</span> *<a name="line.486"></a>
<span class="sourceLineNo">487</span> * @param rootDir root hbase directory<a name="line.487"></a>
<span class="sourceLineNo">488</span> * @param linkRefPath Link Back Reference path<a name="line.488"></a>
<span class="sourceLineNo">489</span> * @return full path of the referenced hfile<a name="line.489"></a>
<span class="sourceLineNo">490</span> */<a name="line.490"></a>
<span class="sourceLineNo">491</span> public static Path getHFileFromBackReference(final Path rootDir, final Path linkRefPath) {<a name="line.491"></a>
<span class="sourceLineNo">492</span> Pair&lt;TableName, String&gt; p = parseBackReferenceName(linkRefPath.getName());<a name="line.492"></a>
<span class="sourceLineNo">493</span> TableName linkTableName = p.getFirst();<a name="line.493"></a>
<span class="sourceLineNo">494</span> String linkRegionName = p.getSecond();<a name="line.494"></a>
<span class="sourceLineNo">495</span><a name="line.495"></a>
<span class="sourceLineNo">496</span> String hfileName = getBackReferenceFileName(linkRefPath.getParent());<a name="line.496"></a>
<span class="sourceLineNo">497</span> Path familyPath = linkRefPath.getParent().getParent();<a name="line.497"></a>
<span class="sourceLineNo">498</span> Path regionPath = familyPath.getParent();<a name="line.498"></a>
<span class="sourceLineNo">499</span> Path tablePath = regionPath.getParent();<a name="line.499"></a>
<span class="sourceLineNo">500</span><a name="line.500"></a>
<span class="sourceLineNo">501</span> String linkName = createHFileLinkName(FSUtils.getTableName(tablePath),<a name="line.501"></a>
<span class="sourceLineNo">502</span> regionPath.getName(), hfileName);<a name="line.502"></a>
<span class="sourceLineNo">503</span> Path linkTableDir = FSUtils.getTableDir(rootDir, linkTableName);<a name="line.503"></a>
<span class="sourceLineNo">504</span> Path regionDir = HRegion.getRegionDir(linkTableDir, linkRegionName);<a name="line.504"></a>
<span class="sourceLineNo">505</span> return new Path(new Path(regionDir, familyPath.getName()), linkName);<a name="line.505"></a>
<span class="sourceLineNo">506</span> }<a name="line.506"></a>
<span class="sourceLineNo">507</span><a name="line.507"></a>
<span class="sourceLineNo">508</span> static Pair&lt;TableName, String&gt; parseBackReferenceName(String name) {<a name="line.508"></a>
<span class="sourceLineNo">509</span> int separatorIndex = name.indexOf('.');<a name="line.509"></a>
<span class="sourceLineNo">510</span> String linkRegionName = name.substring(0, separatorIndex);<a name="line.510"></a>
<span class="sourceLineNo">511</span> String tableSubstr = name.substring(separatorIndex + 1)<a name="line.511"></a>
<span class="sourceLineNo">512</span> .replace('=', TableName.NAMESPACE_DELIM);<a name="line.512"></a>
<span class="sourceLineNo">513</span> TableName linkTableName = TableName.valueOf(tableSubstr);<a name="line.513"></a>
<span class="sourceLineNo">514</span> return new Pair&lt;&gt;(linkTableName, linkRegionName);<a name="line.514"></a>
<span class="sourceLineNo">515</span> }<a name="line.515"></a>
<span class="sourceLineNo">516</span><a name="line.516"></a>
<span class="sourceLineNo">517</span> /**<a name="line.517"></a>
<span class="sourceLineNo">518</span> * Get the full path of the HFile referenced by the back reference<a name="line.518"></a>
<span class="sourceLineNo">519</span> *<a name="line.519"></a>
<span class="sourceLineNo">520</span> * @param conf {@link Configuration} to read for the archive directory name<a name="line.520"></a>
<span class="sourceLineNo">521</span> * @param linkRefPath Link Back Reference path<a name="line.521"></a>
<span class="sourceLineNo">522</span> * @return full path of the referenced hfile<a name="line.522"></a>
<span class="sourceLineNo">523</span> * @throws IOException on unexpected error.<a name="line.523"></a>
<span class="sourceLineNo">524</span> */<a name="line.524"></a>
<span class="sourceLineNo">525</span> public static Path getHFileFromBackReference(final Configuration conf, final Path linkRefPath)<a name="line.525"></a>
<span class="sourceLineNo">526</span> throws IOException {<a name="line.526"></a>
<span class="sourceLineNo">527</span> return getHFileFromBackReference(FSUtils.getRootDir(conf), linkRefPath);<a name="line.527"></a>
<span class="sourceLineNo">528</span> }<a name="line.528"></a>
<span class="sourceLineNo">529</span><a name="line.529"></a>
<span class="sourceLineNo">530</span>}<a name="line.530"></a>
</pre>
</div>
</body>
</html>