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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.regionserver;</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.FileNotFoundException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.io.IOException;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.OptionalLong;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.atomic.AtomicInteger;</span>
<span class="source-line-no">024</span><span id="line-24">import java.util.regex.Matcher;</span>
<span class="source-line-no">025</span><span id="line-25">import java.util.regex.Pattern;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.conf.Configurable;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.fs.FileStatus;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.fs.FileSystem;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.fs.Path;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HDFSBlocksDistribution;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.io.HFileLink;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.io.HalfStoreFileReader;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.io.Reference;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.io.hfile.CacheConfig;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.io.hfile.HFileInfo;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.io.hfile.ReaderContext;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.io.hfile.ReaderContext.ReaderType;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.io.hfile.ReaderContextBuilder;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.mob.MobUtils;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.util.FSUtils;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.util.Pair;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">045</span><span id="line-45">import org.slf4j.Logger;</span>
<span class="source-line-no">046</span><span id="line-46">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">047</span><span id="line-47"></span>
<span class="source-line-no">048</span><span id="line-48">/**</span>
<span class="source-line-no">049</span><span id="line-49"> * Describe a StoreFile (hfile, reference, link)</span>
<span class="source-line-no">050</span><span id="line-50"> */</span>
<span class="source-line-no">051</span><span id="line-51">@InterfaceAudience.Private</span>
<span class="source-line-no">052</span><span id="line-52">public class StoreFileInfo implements Configurable {</span>
<span class="source-line-no">053</span><span id="line-53"> private static final Logger LOG = LoggerFactory.getLogger(StoreFileInfo.class);</span>
<span class="source-line-no">054</span><span id="line-54"></span>
<span class="source-line-no">055</span><span id="line-55"> /**</span>
<span class="source-line-no">056</span><span id="line-56"> * A non-capture group, for hfiles, so that this can be embedded. HFiles are uuid ([0-9a-z]+).</span>
<span class="source-line-no">057</span><span id="line-57"> * Bulk loaded hfiles has (_SeqId_[0-9]+_) has suffix. The mob del file has (_del) as suffix.</span>
<span class="source-line-no">058</span><span id="line-58"> */</span>
<span class="source-line-no">059</span><span id="line-59"> public static final String HFILE_NAME_REGEX = "[0-9a-f]+(?:(?:_SeqId_[0-9]+_)|(?:_del))?";</span>
<span class="source-line-no">060</span><span id="line-60"></span>
<span class="source-line-no">061</span><span id="line-61"> /** Regex that will work for hfiles */</span>
<span class="source-line-no">062</span><span id="line-62"> private static final Pattern HFILE_NAME_PATTERN = Pattern.compile("^(" + HFILE_NAME_REGEX + ")");</span>
<span class="source-line-no">063</span><span id="line-63"></span>
<span class="source-line-no">064</span><span id="line-64"> /**</span>
<span class="source-line-no">065</span><span id="line-65"> * Regex that will work for straight reference names ({@code &lt;hfile&gt;.&lt;parentEncRegion&gt;}) and</span>
<span class="source-line-no">066</span><span id="line-66"> * hfilelink reference names ({@code</span>
<span class="source-line-no">067</span><span id="line-67"> *</span>
<span class="source-line-no">068</span><span id="line-68"> &lt;table&gt;</span>
<span class="source-line-no">069</span><span id="line-69"> * =&lt;region&gt;-&lt;hfile&gt;.&lt;parentEncRegion&gt;}) If reference, then the regex has more than just one</span>
<span class="source-line-no">070</span><span id="line-70"> * group. Group 1, hfile/hfilelink pattern, is this file's id. Group 2 '(.+)' is the reference's</span>
<span class="source-line-no">071</span><span id="line-71"> * parent region name.</span>
<span class="source-line-no">072</span><span id="line-72"> */</span>
<span class="source-line-no">073</span><span id="line-73"> private static final Pattern REF_NAME_PATTERN =</span>
<span class="source-line-no">074</span><span id="line-74"> Pattern.compile(String.format("^(%s|%s)\\.(.+)$", HFILE_NAME_REGEX, HFileLink.LINK_NAME_REGEX));</span>
<span class="source-line-no">075</span><span id="line-75"></span>
<span class="source-line-no">076</span><span id="line-76"> public static final String STORE_FILE_READER_NO_READAHEAD = "hbase.store.reader.no-readahead";</span>
<span class="source-line-no">077</span><span id="line-77"> public static final boolean DEFAULT_STORE_FILE_READER_NO_READAHEAD = true;</span>
<span class="source-line-no">078</span><span id="line-78"></span>
<span class="source-line-no">079</span><span id="line-79"> // Configuration</span>
<span class="source-line-no">080</span><span id="line-80"> private Configuration conf;</span>
<span class="source-line-no">081</span><span id="line-81"></span>
<span class="source-line-no">082</span><span id="line-82"> // FileSystem handle</span>
<span class="source-line-no">083</span><span id="line-83"> private final FileSystem fs;</span>
<span class="source-line-no">084</span><span id="line-84"></span>
<span class="source-line-no">085</span><span id="line-85"> // HDFS blocks distribution information</span>
<span class="source-line-no">086</span><span id="line-86"> private HDFSBlocksDistribution hdfsBlocksDistribution = null;</span>
<span class="source-line-no">087</span><span id="line-87"></span>
<span class="source-line-no">088</span><span id="line-88"> private HFileInfo hfileInfo;</span>
<span class="source-line-no">089</span><span id="line-89"></span>
<span class="source-line-no">090</span><span id="line-90"> // If this storefile references another, this is the reference instance.</span>
<span class="source-line-no">091</span><span id="line-91"> private final Reference reference;</span>
<span class="source-line-no">092</span><span id="line-92"></span>
<span class="source-line-no">093</span><span id="line-93"> // If this storefile is a link to another, this is the link instance.</span>
<span class="source-line-no">094</span><span id="line-94"> private final HFileLink link;</span>
<span class="source-line-no">095</span><span id="line-95"></span>
<span class="source-line-no">096</span><span id="line-96"> private final Path initialPath;</span>
<span class="source-line-no">097</span><span id="line-97"></span>
<span class="source-line-no">098</span><span id="line-98"> private RegionCoprocessorHost coprocessorHost;</span>
<span class="source-line-no">099</span><span id="line-99"></span>
<span class="source-line-no">100</span><span id="line-100"> // timestamp on when the file was created, is 0 and ignored for reference or link files</span>
<span class="source-line-no">101</span><span id="line-101"> private long createdTimestamp;</span>
<span class="source-line-no">102</span><span id="line-102"></span>
<span class="source-line-no">103</span><span id="line-103"> private long size;</span>
<span class="source-line-no">104</span><span id="line-104"></span>
<span class="source-line-no">105</span><span id="line-105"> private final boolean primaryReplica;</span>
<span class="source-line-no">106</span><span id="line-106"></span>
<span class="source-line-no">107</span><span id="line-107"> private final boolean noReadahead;</span>
<span class="source-line-no">108</span><span id="line-108"></span>
<span class="source-line-no">109</span><span id="line-109"> // Counter that is incremented every time a scanner is created on the</span>
<span class="source-line-no">110</span><span id="line-110"> // store file. It is decremented when the scan on the store file is</span>
<span class="source-line-no">111</span><span id="line-111"> // done.</span>
<span class="source-line-no">112</span><span id="line-112"> private final AtomicInteger refCount = new AtomicInteger(0);</span>
<span class="source-line-no">113</span><span id="line-113"></span>
<span class="source-line-no">114</span><span id="line-114"> /**</span>
<span class="source-line-no">115</span><span id="line-115"> * Create a Store File Info</span>
<span class="source-line-no">116</span><span id="line-116"> * @param conf the {@link Configuration} to use</span>
<span class="source-line-no">117</span><span id="line-117"> * @param fs The current file system to use.</span>
<span class="source-line-no">118</span><span id="line-118"> * @param initialPath The {@link Path} of the file</span>
<span class="source-line-no">119</span><span id="line-119"> * @param primaryReplica true if this is a store file for primary replica, otherwise false.</span>
<span class="source-line-no">120</span><span id="line-120"> */</span>
<span class="source-line-no">121</span><span id="line-121"> public StoreFileInfo(final Configuration conf, final FileSystem fs, final Path initialPath,</span>
<span class="source-line-no">122</span><span id="line-122"> final boolean primaryReplica) throws IOException {</span>
<span class="source-line-no">123</span><span id="line-123"> this(conf, fs, null, initialPath, primaryReplica);</span>
<span class="source-line-no">124</span><span id="line-124"> }</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 StoreFileInfo(final Configuration conf, final FileSystem fs, final FileStatus fileStatus,</span>
<span class="source-line-no">127</span><span id="line-127"> final Path initialPath, final boolean primaryReplica) throws IOException {</span>
<span class="source-line-no">128</span><span id="line-128"> assert fs != null;</span>
<span class="source-line-no">129</span><span id="line-129"> assert initialPath != null;</span>
<span class="source-line-no">130</span><span id="line-130"> assert conf != null;</span>
<span class="source-line-no">131</span><span id="line-131"></span>
<span class="source-line-no">132</span><span id="line-132"> this.fs = fs;</span>
<span class="source-line-no">133</span><span id="line-133"> this.conf = conf;</span>
<span class="source-line-no">134</span><span id="line-134"> this.initialPath = fs.makeQualified(initialPath);</span>
<span class="source-line-no">135</span><span id="line-135"> this.primaryReplica = primaryReplica;</span>
<span class="source-line-no">136</span><span id="line-136"> this.noReadahead =</span>
<span class="source-line-no">137</span><span id="line-137"> this.conf.getBoolean(STORE_FILE_READER_NO_READAHEAD, DEFAULT_STORE_FILE_READER_NO_READAHEAD);</span>
<span class="source-line-no">138</span><span id="line-138"> Path p = initialPath;</span>
<span class="source-line-no">139</span><span id="line-139"> if (HFileLink.isHFileLink(p)) {</span>
<span class="source-line-no">140</span><span id="line-140"> // HFileLink</span>
<span class="source-line-no">141</span><span id="line-141"> this.reference = null;</span>
<span class="source-line-no">142</span><span id="line-142"> this.link = HFileLink.buildFromHFileLinkPattern(conf, p);</span>
<span class="source-line-no">143</span><span id="line-143"> LOG.trace("{} is a link", p);</span>
<span class="source-line-no">144</span><span id="line-144"> } else if (isReference(p)) {</span>
<span class="source-line-no">145</span><span id="line-145"> this.reference = Reference.read(fs, p);</span>
<span class="source-line-no">146</span><span id="line-146"> Path referencePath = getReferredToFile(p);</span>
<span class="source-line-no">147</span><span id="line-147"> if (HFileLink.isHFileLink(referencePath)) {</span>
<span class="source-line-no">148</span><span id="line-148"> // HFileLink Reference</span>
<span class="source-line-no">149</span><span id="line-149"> this.link = HFileLink.buildFromHFileLinkPattern(conf, referencePath);</span>
<span class="source-line-no">150</span><span id="line-150"> } else {</span>
<span class="source-line-no">151</span><span id="line-151"> // Reference</span>
<span class="source-line-no">152</span><span id="line-152"> this.link = null;</span>
<span class="source-line-no">153</span><span id="line-153"> }</span>
<span class="source-line-no">154</span><span id="line-154"> LOG.trace("{} is a {} reference to {}", p, reference.getFileRegion(), referencePath);</span>
<span class="source-line-no">155</span><span id="line-155"> } else if (isHFile(p) || isMobFile(p) || isMobRefFile(p)) {</span>
<span class="source-line-no">156</span><span id="line-156"> // HFile</span>
<span class="source-line-no">157</span><span id="line-157"> if (fileStatus != null) {</span>
<span class="source-line-no">158</span><span id="line-158"> this.createdTimestamp = fileStatus.getModificationTime();</span>
<span class="source-line-no">159</span><span id="line-159"> this.size = fileStatus.getLen();</span>
<span class="source-line-no">160</span><span id="line-160"> } else {</span>
<span class="source-line-no">161</span><span id="line-161"> FileStatus fStatus = fs.getFileStatus(initialPath);</span>
<span class="source-line-no">162</span><span id="line-162"> this.createdTimestamp = fStatus.getModificationTime();</span>
<span class="source-line-no">163</span><span id="line-163"> this.size = fStatus.getLen();</span>
<span class="source-line-no">164</span><span id="line-164"> }</span>
<span class="source-line-no">165</span><span id="line-165"> this.reference = null;</span>
<span class="source-line-no">166</span><span id="line-166"> this.link = null;</span>
<span class="source-line-no">167</span><span id="line-167"> } else {</span>
<span class="source-line-no">168</span><span id="line-168"> throw new IOException("path=" + p + " doesn't look like a valid StoreFile");</span>
<span class="source-line-no">169</span><span id="line-169"> }</span>
<span class="source-line-no">170</span><span id="line-170"> }</span>
<span class="source-line-no">171</span><span id="line-171"></span>
<span class="source-line-no">172</span><span id="line-172"> /**</span>
<span class="source-line-no">173</span><span id="line-173"> * Create a Store File Info</span>
<span class="source-line-no">174</span><span id="line-174"> * @param conf the {@link Configuration} to use</span>
<span class="source-line-no">175</span><span id="line-175"> * @param fs The current file system to use.</span>
<span class="source-line-no">176</span><span id="line-176"> * @param fileStatus The {@link FileStatus} of the file</span>
<span class="source-line-no">177</span><span id="line-177"> */</span>
<span class="source-line-no">178</span><span id="line-178"> public StoreFileInfo(final Configuration conf, final FileSystem fs, final FileStatus fileStatus)</span>
<span class="source-line-no">179</span><span id="line-179"> throws IOException {</span>
<span class="source-line-no">180</span><span id="line-180"> this(conf, fs, fileStatus, fileStatus.getPath(), true);</span>
<span class="source-line-no">181</span><span id="line-181"> }</span>
<span class="source-line-no">182</span><span id="line-182"></span>
<span class="source-line-no">183</span><span id="line-183"> /**</span>
<span class="source-line-no">184</span><span id="line-184"> * Create a Store File Info from an HFileLink</span>
<span class="source-line-no">185</span><span id="line-185"> * @param conf The {@link Configuration} to use</span>
<span class="source-line-no">186</span><span id="line-186"> * @param fs The current file system to use</span>
<span class="source-line-no">187</span><span id="line-187"> * @param fileStatus The {@link FileStatus} of the file</span>
<span class="source-line-no">188</span><span id="line-188"> */</span>
<span class="source-line-no">189</span><span id="line-189"> public StoreFileInfo(final Configuration conf, final FileSystem fs, final FileStatus fileStatus,</span>
<span class="source-line-no">190</span><span id="line-190"> final HFileLink link) {</span>
<span class="source-line-no">191</span><span id="line-191"> this(conf, fs, fileStatus, null, link);</span>
<span class="source-line-no">192</span><span id="line-192"> }</span>
<span class="source-line-no">193</span><span id="line-193"></span>
<span class="source-line-no">194</span><span id="line-194"> /**</span>
<span class="source-line-no">195</span><span id="line-195"> * Create a Store File Info from an HFileLink</span>
<span class="source-line-no">196</span><span id="line-196"> * @param conf The {@link Configuration} to use</span>
<span class="source-line-no">197</span><span id="line-197"> * @param fs The current file system to use</span>
<span class="source-line-no">198</span><span id="line-198"> * @param fileStatus The {@link FileStatus} of the file</span>
<span class="source-line-no">199</span><span id="line-199"> * @param reference The reference instance</span>
<span class="source-line-no">200</span><span id="line-200"> */</span>
<span class="source-line-no">201</span><span id="line-201"> public StoreFileInfo(final Configuration conf, final FileSystem fs, final FileStatus fileStatus,</span>
<span class="source-line-no">202</span><span id="line-202"> final Reference reference) {</span>
<span class="source-line-no">203</span><span id="line-203"> this(conf, fs, fileStatus, reference, null);</span>
<span class="source-line-no">204</span><span id="line-204"> }</span>
<span class="source-line-no">205</span><span id="line-205"></span>
<span class="source-line-no">206</span><span id="line-206"> /**</span>
<span class="source-line-no">207</span><span id="line-207"> * Create a Store File Info from an HFileLink and a Reference</span>
<span class="source-line-no">208</span><span id="line-208"> * @param conf The {@link Configuration} to use</span>
<span class="source-line-no">209</span><span id="line-209"> * @param fs The current file system to use</span>
<span class="source-line-no">210</span><span id="line-210"> * @param fileStatus The {@link FileStatus} of the file</span>
<span class="source-line-no">211</span><span id="line-211"> * @param reference The reference instance</span>
<span class="source-line-no">212</span><span id="line-212"> * @param link The link instance</span>
<span class="source-line-no">213</span><span id="line-213"> */</span>
<span class="source-line-no">214</span><span id="line-214"> public StoreFileInfo(final Configuration conf, final FileSystem fs, final FileStatus fileStatus,</span>
<span class="source-line-no">215</span><span id="line-215"> final Reference reference, final HFileLink link) {</span>
<span class="source-line-no">216</span><span id="line-216"> this.fs = fs;</span>
<span class="source-line-no">217</span><span id="line-217"> this.conf = conf;</span>
<span class="source-line-no">218</span><span id="line-218"> this.primaryReplica = false;</span>
<span class="source-line-no">219</span><span id="line-219"> this.initialPath = (fileStatus == null) ? null : fileStatus.getPath();</span>
<span class="source-line-no">220</span><span id="line-220"> this.createdTimestamp = (fileStatus == null) ? 0 : fileStatus.getModificationTime();</span>
<span class="source-line-no">221</span><span id="line-221"> this.reference = reference;</span>
<span class="source-line-no">222</span><span id="line-222"> this.link = link;</span>
<span class="source-line-no">223</span><span id="line-223"> this.noReadahead =</span>
<span class="source-line-no">224</span><span id="line-224"> this.conf.getBoolean(STORE_FILE_READER_NO_READAHEAD, DEFAULT_STORE_FILE_READER_NO_READAHEAD);</span>
<span class="source-line-no">225</span><span id="line-225"> }</span>
<span class="source-line-no">226</span><span id="line-226"></span>
<span class="source-line-no">227</span><span id="line-227"> @Override</span>
<span class="source-line-no">228</span><span id="line-228"> public Configuration getConf() {</span>
<span class="source-line-no">229</span><span id="line-229"> return conf;</span>
<span class="source-line-no">230</span><span id="line-230"> }</span>
<span class="source-line-no">231</span><span id="line-231"></span>
<span class="source-line-no">232</span><span id="line-232"> @Override</span>
<span class="source-line-no">233</span><span id="line-233"> public void setConf(Configuration conf) {</span>
<span class="source-line-no">234</span><span id="line-234"> this.conf = conf;</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"> * Size of the Hfile</span>
<span class="source-line-no">239</span><span id="line-239"> */</span>
<span class="source-line-no">240</span><span id="line-240"> public long getSize() {</span>
<span class="source-line-no">241</span><span id="line-241"> return size;</span>
<span class="source-line-no">242</span><span id="line-242"> }</span>
<span class="source-line-no">243</span><span id="line-243"></span>
<span class="source-line-no">244</span><span id="line-244"> /**</span>
<span class="source-line-no">245</span><span id="line-245"> * Sets the region coprocessor env.</span>
<span class="source-line-no">246</span><span id="line-246"> */</span>
<span class="source-line-no">247</span><span id="line-247"> public void setRegionCoprocessorHost(RegionCoprocessorHost coprocessorHost) {</span>
<span class="source-line-no">248</span><span id="line-248"> this.coprocessorHost = coprocessorHost;</span>
<span class="source-line-no">249</span><span id="line-249"> }</span>
<span class="source-line-no">250</span><span id="line-250"></span>
<span class="source-line-no">251</span><span id="line-251"> /**</span>
<span class="source-line-no">252</span><span id="line-252"> * @return the Reference object associated to this StoreFileInfo. null if the StoreFile is not a</span>
<span class="source-line-no">253</span><span id="line-253"> * reference.</span>
<span class="source-line-no">254</span><span id="line-254"> */</span>
<span class="source-line-no">255</span><span id="line-255"> public Reference getReference() {</span>
<span class="source-line-no">256</span><span id="line-256"> return this.reference;</span>
<span class="source-line-no">257</span><span id="line-257"> }</span>
<span class="source-line-no">258</span><span id="line-258"></span>
<span class="source-line-no">259</span><span id="line-259"> /** Returns True if the store file is a Reference */</span>
<span class="source-line-no">260</span><span id="line-260"> public boolean isReference() {</span>
<span class="source-line-no">261</span><span id="line-261"> return this.reference != null;</span>
<span class="source-line-no">262</span><span id="line-262"> }</span>
<span class="source-line-no">263</span><span id="line-263"></span>
<span class="source-line-no">264</span><span id="line-264"> /** Returns True if the store file is a top Reference */</span>
<span class="source-line-no">265</span><span id="line-265"> public boolean isTopReference() {</span>
<span class="source-line-no">266</span><span id="line-266"> return this.reference != null &amp;&amp; Reference.isTopFileRegion(this.reference.getFileRegion());</span>
<span class="source-line-no">267</span><span id="line-267"> }</span>
<span class="source-line-no">268</span><span id="line-268"></span>
<span class="source-line-no">269</span><span id="line-269"> /** Returns True if the store file is a link */</span>
<span class="source-line-no">270</span><span id="line-270"> public boolean isLink() {</span>
<span class="source-line-no">271</span><span id="line-271"> return this.link != null &amp;&amp; this.reference == null;</span>
<span class="source-line-no">272</span><span id="line-272"> }</span>
<span class="source-line-no">273</span><span id="line-273"></span>
<span class="source-line-no">274</span><span id="line-274"> /** Returns the HDFS block distribution */</span>
<span class="source-line-no">275</span><span id="line-275"> public HDFSBlocksDistribution getHDFSBlockDistribution() {</span>
<span class="source-line-no">276</span><span id="line-276"> return this.hdfsBlocksDistribution;</span>
<span class="source-line-no">277</span><span id="line-277"> }</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 StoreFileReader createReader(ReaderContext context, CacheConfig cacheConf)</span>
<span class="source-line-no">280</span><span id="line-280"> throws IOException {</span>
<span class="source-line-no">281</span><span id="line-281"> StoreFileReader reader = null;</span>
<span class="source-line-no">282</span><span id="line-282"> if (this.reference != null) {</span>
<span class="source-line-no">283</span><span id="line-283"> reader = new HalfStoreFileReader(context, hfileInfo, cacheConf, reference, this, conf);</span>
<span class="source-line-no">284</span><span id="line-284"> } else {</span>
<span class="source-line-no">285</span><span id="line-285"> reader = new StoreFileReader(context, hfileInfo, cacheConf, this, conf);</span>
<span class="source-line-no">286</span><span id="line-286"> }</span>
<span class="source-line-no">287</span><span id="line-287"> return reader;</span>
<span class="source-line-no">288</span><span id="line-288"> }</span>
<span class="source-line-no">289</span><span id="line-289"></span>
<span class="source-line-no">290</span><span id="line-290"> ReaderContext createReaderContext(boolean doDropBehind, long readahead, ReaderType type)</span>
<span class="source-line-no">291</span><span id="line-291"> throws IOException {</span>
<span class="source-line-no">292</span><span id="line-292"> FSDataInputStreamWrapper in;</span>
<span class="source-line-no">293</span><span id="line-293"> FileStatus status;</span>
<span class="source-line-no">294</span><span id="line-294"> if (this.link != null) {</span>
<span class="source-line-no">295</span><span id="line-295"> // HFileLink</span>
<span class="source-line-no">296</span><span id="line-296"> in = new FSDataInputStreamWrapper(fs, this.link, doDropBehind, readahead);</span>
<span class="source-line-no">297</span><span id="line-297"> status = this.link.getFileStatus(fs);</span>
<span class="source-line-no">298</span><span id="line-298"> } else if (this.reference != null) {</span>
<span class="source-line-no">299</span><span id="line-299"> // HFile Reference</span>
<span class="source-line-no">300</span><span id="line-300"> Path referencePath = getReferredToFile(this.getPath());</span>
<span class="source-line-no">301</span><span id="line-301"> try {</span>
<span class="source-line-no">302</span><span id="line-302"> in = new FSDataInputStreamWrapper(fs, referencePath, doDropBehind, readahead);</span>
<span class="source-line-no">303</span><span id="line-303"> } catch (FileNotFoundException fnfe) {</span>
<span class="source-line-no">304</span><span id="line-304"> // Intercept the exception so can insert more info about the Reference; otherwise</span>
<span class="source-line-no">305</span><span id="line-305"> // exception just complains about some random file -- operator doesn't realize it</span>
<span class="source-line-no">306</span><span id="line-306"> // other end of a Reference</span>
<span class="source-line-no">307</span><span id="line-307"> FileNotFoundException newFnfe = new FileNotFoundException(toString());</span>
<span class="source-line-no">308</span><span id="line-308"> newFnfe.initCause(fnfe);</span>
<span class="source-line-no">309</span><span id="line-309"> throw newFnfe;</span>
<span class="source-line-no">310</span><span id="line-310"> }</span>
<span class="source-line-no">311</span><span id="line-311"> status = fs.getFileStatus(referencePath);</span>
<span class="source-line-no">312</span><span id="line-312"> } else {</span>
<span class="source-line-no">313</span><span id="line-313"> in = new FSDataInputStreamWrapper(fs, this.getPath(), doDropBehind, readahead);</span>
<span class="source-line-no">314</span><span id="line-314"> status = fs.getFileStatus(initialPath);</span>
<span class="source-line-no">315</span><span id="line-315"> }</span>
<span class="source-line-no">316</span><span id="line-316"> long length = status.getLen();</span>
<span class="source-line-no">317</span><span id="line-317"> ReaderContextBuilder contextBuilder =</span>
<span class="source-line-no">318</span><span id="line-318"> new ReaderContextBuilder().withInputStreamWrapper(in).withFileSize(length)</span>
<span class="source-line-no">319</span><span id="line-319"> .withPrimaryReplicaReader(this.primaryReplica).withReaderType(type).withFileSystem(fs);</span>
<span class="source-line-no">320</span><span id="line-320"> if (this.reference != null) {</span>
<span class="source-line-no">321</span><span id="line-321"> contextBuilder.withFilePath(this.getPath());</span>
<span class="source-line-no">322</span><span id="line-322"> } else {</span>
<span class="source-line-no">323</span><span id="line-323"> contextBuilder.withFilePath(status.getPath());</span>
<span class="source-line-no">324</span><span id="line-324"> }</span>
<span class="source-line-no">325</span><span id="line-325"> return contextBuilder.build();</span>
<span class="source-line-no">326</span><span id="line-326"> }</span>
<span class="source-line-no">327</span><span id="line-327"></span>
<span class="source-line-no">328</span><span id="line-328"> /**</span>
<span class="source-line-no">329</span><span id="line-329"> * Compute the HDFS Block Distribution for this StoreFile</span>
<span class="source-line-no">330</span><span id="line-330"> */</span>
<span class="source-line-no">331</span><span id="line-331"> public HDFSBlocksDistribution computeHDFSBlocksDistribution(final FileSystem fs)</span>
<span class="source-line-no">332</span><span id="line-332"> throws IOException {</span>
<span class="source-line-no">333</span><span id="line-333"> // guard against the case where we get the FileStatus from link, but by the time we</span>
<span class="source-line-no">334</span><span id="line-334"> // call compute the file is moved again</span>
<span class="source-line-no">335</span><span id="line-335"> if (this.link != null) {</span>
<span class="source-line-no">336</span><span id="line-336"> FileNotFoundException exToThrow = null;</span>
<span class="source-line-no">337</span><span id="line-337"> for (int i = 0; i &lt; this.link.getLocations().length; i++) {</span>
<span class="source-line-no">338</span><span id="line-338"> try {</span>
<span class="source-line-no">339</span><span id="line-339"> return computeHDFSBlocksDistributionInternal(fs);</span>
<span class="source-line-no">340</span><span id="line-340"> } catch (FileNotFoundException ex) {</span>
<span class="source-line-no">341</span><span id="line-341"> // try the other location</span>
<span class="source-line-no">342</span><span id="line-342"> exToThrow = ex;</span>
<span class="source-line-no">343</span><span id="line-343"> }</span>
<span class="source-line-no">344</span><span id="line-344"> }</span>
<span class="source-line-no">345</span><span id="line-345"> throw exToThrow;</span>
<span class="source-line-no">346</span><span id="line-346"> } else {</span>
<span class="source-line-no">347</span><span id="line-347"> return computeHDFSBlocksDistributionInternal(fs);</span>
<span class="source-line-no">348</span><span id="line-348"> }</span>
<span class="source-line-no">349</span><span id="line-349"> }</span>
<span class="source-line-no">350</span><span id="line-350"></span>
<span class="source-line-no">351</span><span id="line-351"> private HDFSBlocksDistribution computeHDFSBlocksDistributionInternal(final FileSystem fs)</span>
<span class="source-line-no">352</span><span id="line-352"> throws IOException {</span>
<span class="source-line-no">353</span><span id="line-353"> FileStatus status = getReferencedFileStatus(fs);</span>
<span class="source-line-no">354</span><span id="line-354"> if (this.reference != null) {</span>
<span class="source-line-no">355</span><span id="line-355"> return computeRefFileHDFSBlockDistribution(fs, reference, status);</span>
<span class="source-line-no">356</span><span id="line-356"> } else {</span>
<span class="source-line-no">357</span><span id="line-357"> return FSUtils.computeHDFSBlocksDistribution(fs, status, 0, status.getLen());</span>
<span class="source-line-no">358</span><span id="line-358"> }</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"> /**</span>
<span class="source-line-no">362</span><span id="line-362"> * Get the {@link FileStatus} of the file referenced by this StoreFileInfo</span>
<span class="source-line-no">363</span><span id="line-363"> * @param fs The current file system to use.</span>
<span class="source-line-no">364</span><span id="line-364"> * @return The {@link FileStatus} of the file referenced by this StoreFileInfo</span>
<span class="source-line-no">365</span><span id="line-365"> */</span>
<span class="source-line-no">366</span><span id="line-366"> public FileStatus getReferencedFileStatus(final FileSystem fs) throws IOException {</span>
<span class="source-line-no">367</span><span id="line-367"> FileStatus status;</span>
<span class="source-line-no">368</span><span id="line-368"> if (this.reference != null) {</span>
<span class="source-line-no">369</span><span id="line-369"> if (this.link != null) {</span>
<span class="source-line-no">370</span><span id="line-370"> FileNotFoundException exToThrow = null;</span>
<span class="source-line-no">371</span><span id="line-371"> for (int i = 0; i &lt; this.link.getLocations().length; i++) {</span>
<span class="source-line-no">372</span><span id="line-372"> // HFileLink Reference</span>
<span class="source-line-no">373</span><span id="line-373"> try {</span>
<span class="source-line-no">374</span><span id="line-374"> return link.getFileStatus(fs);</span>
<span class="source-line-no">375</span><span id="line-375"> } catch (FileNotFoundException ex) {</span>
<span class="source-line-no">376</span><span id="line-376"> // try the other location</span>
<span class="source-line-no">377</span><span id="line-377"> exToThrow = ex;</span>
<span class="source-line-no">378</span><span id="line-378"> }</span>
<span class="source-line-no">379</span><span id="line-379"> }</span>
<span class="source-line-no">380</span><span id="line-380"> throw exToThrow;</span>
<span class="source-line-no">381</span><span id="line-381"> } else {</span>
<span class="source-line-no">382</span><span id="line-382"> // HFile Reference</span>
<span class="source-line-no">383</span><span id="line-383"> Path referencePath = getReferredToFile(this.getPath());</span>
<span class="source-line-no">384</span><span id="line-384"> status = fs.getFileStatus(referencePath);</span>
<span class="source-line-no">385</span><span id="line-385"> }</span>
<span class="source-line-no">386</span><span id="line-386"> } else {</span>
<span class="source-line-no">387</span><span id="line-387"> if (this.link != null) {</span>
<span class="source-line-no">388</span><span id="line-388"> FileNotFoundException exToThrow = null;</span>
<span class="source-line-no">389</span><span id="line-389"> for (int i = 0; i &lt; this.link.getLocations().length; i++) {</span>
<span class="source-line-no">390</span><span id="line-390"> // HFileLink</span>
<span class="source-line-no">391</span><span id="line-391"> try {</span>
<span class="source-line-no">392</span><span id="line-392"> return link.getFileStatus(fs);</span>
<span class="source-line-no">393</span><span id="line-393"> } catch (FileNotFoundException ex) {</span>
<span class="source-line-no">394</span><span id="line-394"> // try the other location</span>
<span class="source-line-no">395</span><span id="line-395"> exToThrow = ex;</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"> throw exToThrow;</span>
<span class="source-line-no">399</span><span id="line-399"> } else {</span>
<span class="source-line-no">400</span><span id="line-400"> status = fs.getFileStatus(initialPath);</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"> return status;</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"> /** Returns The {@link Path} of the file */</span>
<span class="source-line-no">407</span><span id="line-407"> public Path getPath() {</span>
<span class="source-line-no">408</span><span id="line-408"> return initialPath;</span>
<span class="source-line-no">409</span><span id="line-409"> }</span>
<span class="source-line-no">410</span><span id="line-410"></span>
<span class="source-line-no">411</span><span id="line-411"> /** Returns The {@link FileStatus} of the file */</span>
<span class="source-line-no">412</span><span id="line-412"> public FileStatus getFileStatus() throws IOException {</span>
<span class="source-line-no">413</span><span id="line-413"> return getReferencedFileStatus(fs);</span>
<span class="source-line-no">414</span><span id="line-414"> }</span>
<span class="source-line-no">415</span><span id="line-415"></span>
<span class="source-line-no">416</span><span id="line-416"> /** Returns Get the modification time of the file. */</span>
<span class="source-line-no">417</span><span id="line-417"> public long getModificationTime() throws IOException {</span>
<span class="source-line-no">418</span><span id="line-418"> return getFileStatus().getModificationTime();</span>
<span class="source-line-no">419</span><span id="line-419"> }</span>
<span class="source-line-no">420</span><span id="line-420"></span>
<span class="source-line-no">421</span><span id="line-421"> @Override</span>
<span class="source-line-no">422</span><span id="line-422"> public String toString() {</span>
<span class="source-line-no">423</span><span id="line-423"> return this.getPath()</span>
<span class="source-line-no">424</span><span id="line-424"> + (isReference() ? "-&gt;" + getReferredToFile(this.getPath()) + "-" + reference : "");</span>
<span class="source-line-no">425</span><span id="line-425"> }</span>
<span class="source-line-no">426</span><span id="line-426"></span>
<span class="source-line-no">427</span><span id="line-427"> /**</span>
<span class="source-line-no">428</span><span id="line-428"> * Cells in a bulkloaded file don't have a sequenceId since they don't go through memstore. When a</span>
<span class="source-line-no">429</span><span id="line-429"> * bulkload file is committed, the current memstore ts is stamped onto the file name as the</span>
<span class="source-line-no">430</span><span id="line-430"> * sequenceId of the file. At read time, the sequenceId is copied onto all of the cells returned</span>
<span class="source-line-no">431</span><span id="line-431"> * so that they can be properly sorted relative to other cells in other files. Further, when</span>
<span class="source-line-no">432</span><span id="line-432"> * opening multiple files for scan, the sequence id is used to ensusre that the bulkload file's</span>
<span class="source-line-no">433</span><span id="line-433"> * scanner is porperly sorted amongst the other scanners. Non-bulkloaded files get their</span>
<span class="source-line-no">434</span><span id="line-434"> * sequenceId from the MAX_MEMSTORE_TS_KEY since those go through the memstore and have true</span>
<span class="source-line-no">435</span><span id="line-435"> * sequenceIds.</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 static final String SEQ_ID_MARKER = "_SeqId_";</span>
<span class="source-line-no">438</span><span id="line-438"> private static final int SEQ_ID_MARKER_LENGTH = SEQ_ID_MARKER.length();</span>
<span class="source-line-no">439</span><span id="line-439"></span>
<span class="source-line-no">440</span><span id="line-440"> /**</span>
<span class="source-line-no">441</span><span id="line-441"> * @see #SEQ_ID_MARKER</span>
<span class="source-line-no">442</span><span id="line-442"> * @return True if the file name looks like a bulkloaded file, based on the presence of the SeqId</span>
<span class="source-line-no">443</span><span id="line-443"> * marker added to those files.</span>
<span class="source-line-no">444</span><span id="line-444"> */</span>
<span class="source-line-no">445</span><span id="line-445"> public static boolean hasBulkloadSeqId(final Path path) {</span>
<span class="source-line-no">446</span><span id="line-446"> String fileName = path.getName();</span>
<span class="source-line-no">447</span><span id="line-447"> return fileName.contains(SEQ_ID_MARKER);</span>
<span class="source-line-no">448</span><span id="line-448"> }</span>
<span class="source-line-no">449</span><span id="line-449"></span>
<span class="source-line-no">450</span><span id="line-450"> /**</span>
<span class="source-line-no">451</span><span id="line-451"> * @see #SEQ_ID_MARKER</span>
<span class="source-line-no">452</span><span id="line-452"> * @return If the path is a properly named bulkloaded file, returns the sequence id stamped at the</span>
<span class="source-line-no">453</span><span id="line-453"> * end of the file name.</span>
<span class="source-line-no">454</span><span id="line-454"> */</span>
<span class="source-line-no">455</span><span id="line-455"> public static OptionalLong getBulkloadSeqId(final Path path) {</span>
<span class="source-line-no">456</span><span id="line-456"> String fileName = path.getName();</span>
<span class="source-line-no">457</span><span id="line-457"> int startPos = fileName.indexOf(SEQ_ID_MARKER);</span>
<span class="source-line-no">458</span><span id="line-458"> if (startPos != -1) {</span>
<span class="source-line-no">459</span><span id="line-459"> String strVal = fileName.substring(startPos + SEQ_ID_MARKER_LENGTH,</span>
<span class="source-line-no">460</span><span id="line-460"> fileName.indexOf('_', startPos + SEQ_ID_MARKER_LENGTH));</span>
<span class="source-line-no">461</span><span id="line-461"> return OptionalLong.of(Long.parseLong(strVal));</span>
<span class="source-line-no">462</span><span id="line-462"> }</span>
<span class="source-line-no">463</span><span id="line-463"> return OptionalLong.empty();</span>
<span class="source-line-no">464</span><span id="line-464"> }</span>
<span class="source-line-no">465</span><span id="line-465"></span>
<span class="source-line-no">466</span><span id="line-466"> /**</span>
<span class="source-line-no">467</span><span id="line-467"> * @see #SEQ_ID_MARKER</span>
<span class="source-line-no">468</span><span id="line-468"> * @return A string value for appending to the end of a bulkloaded file name, containing the</span>
<span class="source-line-no">469</span><span id="line-469"> * properly formatted SeqId marker.</span>
<span class="source-line-no">470</span><span id="line-470"> */</span>
<span class="source-line-no">471</span><span id="line-471"> public static String formatBulkloadSeqId(long seqId) {</span>
<span class="source-line-no">472</span><span id="line-472"> return SEQ_ID_MARKER + seqId + "_";</span>
<span class="source-line-no">473</span><span id="line-473"> }</span>
<span class="source-line-no">474</span><span id="line-474"></span>
<span class="source-line-no">475</span><span id="line-475"> /**</span>
<span class="source-line-no">476</span><span id="line-476"> * @param path Path to check.</span>
<span class="source-line-no">477</span><span id="line-477"> * @return True if the path has format of a HFile.</span>
<span class="source-line-no">478</span><span id="line-478"> */</span>
<span class="source-line-no">479</span><span id="line-479"> public static boolean isHFile(final Path path) {</span>
<span class="source-line-no">480</span><span id="line-480"> return isHFile(path.getName());</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"> public static boolean isHFile(final String fileName) {</span>
<span class="source-line-no">484</span><span id="line-484"> Matcher m = HFILE_NAME_PATTERN.matcher(fileName);</span>
<span class="source-line-no">485</span><span id="line-485"> return m.matches() &amp;&amp; m.groupCount() &gt; 0;</span>
<span class="source-line-no">486</span><span id="line-486"> }</span>
<span class="source-line-no">487</span><span id="line-487"></span>
<span class="source-line-no">488</span><span id="line-488"> /**</span>
<span class="source-line-no">489</span><span id="line-489"> * Checks if the file is a MOB file</span>
<span class="source-line-no">490</span><span id="line-490"> * @param path path to a file</span>
<span class="source-line-no">491</span><span id="line-491"> * @return true, if - yes, false otherwise</span>
<span class="source-line-no">492</span><span id="line-492"> */</span>
<span class="source-line-no">493</span><span id="line-493"> public static boolean isMobFile(final Path path) {</span>
<span class="source-line-no">494</span><span id="line-494"> String fileName = path.getName();</span>
<span class="source-line-no">495</span><span id="line-495"> String[] parts = fileName.split(MobUtils.SEP);</span>
<span class="source-line-no">496</span><span id="line-496"> if (parts.length != 2) {</span>
<span class="source-line-no">497</span><span id="line-497"> return false;</span>
<span class="source-line-no">498</span><span id="line-498"> }</span>
<span class="source-line-no">499</span><span id="line-499"> Matcher m = HFILE_NAME_PATTERN.matcher(parts[0]);</span>
<span class="source-line-no">500</span><span id="line-500"> Matcher mm = HFILE_NAME_PATTERN.matcher(parts[1]);</span>
<span class="source-line-no">501</span><span id="line-501"> return m.matches() &amp;&amp; mm.matches();</span>
<span class="source-line-no">502</span><span id="line-502"> }</span>
<span class="source-line-no">503</span><span id="line-503"></span>
<span class="source-line-no">504</span><span id="line-504"> /**</span>
<span class="source-line-no">505</span><span id="line-505"> * Checks if the file is a MOB reference file, created by snapshot</span>
<span class="source-line-no">506</span><span id="line-506"> * @param path path to a file</span>
<span class="source-line-no">507</span><span id="line-507"> * @return true, if - yes, false otherwise</span>
<span class="source-line-no">508</span><span id="line-508"> */</span>
<span class="source-line-no">509</span><span id="line-509"> public static boolean isMobRefFile(final Path path) {</span>
<span class="source-line-no">510</span><span id="line-510"> String fileName = path.getName();</span>
<span class="source-line-no">511</span><span id="line-511"> int lastIndex = fileName.lastIndexOf(MobUtils.SEP);</span>
<span class="source-line-no">512</span><span id="line-512"> if (lastIndex &lt; 0) {</span>
<span class="source-line-no">513</span><span id="line-513"> return false;</span>
<span class="source-line-no">514</span><span id="line-514"> }</span>
<span class="source-line-no">515</span><span id="line-515"> String[] parts = new String[2];</span>
<span class="source-line-no">516</span><span id="line-516"> parts[0] = fileName.substring(0, lastIndex);</span>
<span class="source-line-no">517</span><span id="line-517"> parts[1] = fileName.substring(lastIndex + 1);</span>
<span class="source-line-no">518</span><span id="line-518"> String name = parts[0] + "." + parts[1];</span>
<span class="source-line-no">519</span><span id="line-519"> Matcher m = REF_NAME_PATTERN.matcher(name);</span>
<span class="source-line-no">520</span><span id="line-520"> return m.matches() &amp;&amp; m.groupCount() &gt; 1;</span>
<span class="source-line-no">521</span><span id="line-521"> }</span>
<span class="source-line-no">522</span><span id="line-522"></span>
<span class="source-line-no">523</span><span id="line-523"> /**</span>
<span class="source-line-no">524</span><span id="line-524"> * @param path Path to check.</span>
<span class="source-line-no">525</span><span id="line-525"> * @return True if the path has format of a HStoreFile reference.</span>
<span class="source-line-no">526</span><span id="line-526"> */</span>
<span class="source-line-no">527</span><span id="line-527"> public static boolean isReference(final Path path) {</span>
<span class="source-line-no">528</span><span id="line-528"> return isReference(path.getName());</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"> * @param name file name to check.</span>
<span class="source-line-no">533</span><span id="line-533"> * @return True if the path has format of a HStoreFile reference.</span>
<span class="source-line-no">534</span><span id="line-534"> */</span>
<span class="source-line-no">535</span><span id="line-535"> public static boolean isReference(final String name) {</span>
<span class="source-line-no">536</span><span id="line-536"> Matcher m = REF_NAME_PATTERN.matcher(name);</span>
<span class="source-line-no">537</span><span id="line-537"> return m.matches() &amp;&amp; m.groupCount() &gt; 1;</span>
<span class="source-line-no">538</span><span id="line-538"> }</span>
<span class="source-line-no">539</span><span id="line-539"></span>
<span class="source-line-no">540</span><span id="line-540"> /** Returns timestamp when this file was created (as returned by filesystem) */</span>
<span class="source-line-no">541</span><span id="line-541"> public long getCreatedTimestamp() {</span>
<span class="source-line-no">542</span><span id="line-542"> return createdTimestamp;</span>
<span class="source-line-no">543</span><span id="line-543"> }</span>
<span class="source-line-no">544</span><span id="line-544"></span>
<span class="source-line-no">545</span><span id="line-545"> /*</span>
<span class="source-line-no">546</span><span id="line-546"> * Return path to the file referred to by a Reference. Presumes a directory hierarchy of</span>
<span class="source-line-no">547</span><span id="line-547"> * &lt;code&gt;${hbase.rootdir}/data/${namespace}/tablename/regionname/familyname&lt;/code&gt;.</span>
<span class="source-line-no">548</span><span id="line-548"> * @param p Path to a Reference file.</span>
<span class="source-line-no">549</span><span id="line-549"> * @return Calculated path to parent region file.</span>
<span class="source-line-no">550</span><span id="line-550"> * @throws IllegalArgumentException when path regex fails to match.</span>
<span class="source-line-no">551</span><span id="line-551"> */</span>
<span class="source-line-no">552</span><span id="line-552"> public static Path getReferredToFile(final Path p) {</span>
<span class="source-line-no">553</span><span id="line-553"> Matcher m = REF_NAME_PATTERN.matcher(p.getName());</span>
<span class="source-line-no">554</span><span id="line-554"> if (m == null || !m.matches()) {</span>
<span class="source-line-no">555</span><span id="line-555"> LOG.warn("Failed match of store file name {}", p.toString());</span>
<span class="source-line-no">556</span><span id="line-556"> throw new IllegalArgumentException("Failed match of store file name " + p.toString());</span>
<span class="source-line-no">557</span><span id="line-557"> }</span>
<span class="source-line-no">558</span><span id="line-558"></span>
<span class="source-line-no">559</span><span id="line-559"> // Other region name is suffix on the passed Reference file name</span>
<span class="source-line-no">560</span><span id="line-560"> String otherRegion = m.group(2);</span>
<span class="source-line-no">561</span><span id="line-561"> // Tabledir is up two directories from where Reference was written.</span>
<span class="source-line-no">562</span><span id="line-562"> Path tableDir = p.getParent().getParent().getParent();</span>
<span class="source-line-no">563</span><span id="line-563"> String nameStrippedOfSuffix = m.group(1);</span>
<span class="source-line-no">564</span><span id="line-564"> LOG.trace("reference {} to region={} hfile={}", p, otherRegion, nameStrippedOfSuffix);</span>
<span class="source-line-no">565</span><span id="line-565"></span>
<span class="source-line-no">566</span><span id="line-566"> // Build up new path with the referenced region in place of our current</span>
<span class="source-line-no">567</span><span id="line-567"> // region in the reference path. Also strip regionname suffix from name.</span>
<span class="source-line-no">568</span><span id="line-568"> return new Path(new Path(new Path(tableDir, otherRegion), p.getParent().getName()),</span>
<span class="source-line-no">569</span><span id="line-569"> nameStrippedOfSuffix);</span>
<span class="source-line-no">570</span><span id="line-570"> }</span>
<span class="source-line-no">571</span><span id="line-571"></span>
<span class="source-line-no">572</span><span id="line-572"> /*</span>
<span class="source-line-no">573</span><span id="line-573"> * Return region and file name referred to by a Reference.</span>
<span class="source-line-no">574</span><span id="line-574"> * @param referenceFile HFile name which is a Reference.</span>
<span class="source-line-no">575</span><span id="line-575"> * @return Calculated referenced region and file name.</span>
<span class="source-line-no">576</span><span id="line-576"> * @throws IllegalArgumentException when referenceFile regex fails to match.</span>
<span class="source-line-no">577</span><span id="line-577"> */</span>
<span class="source-line-no">578</span><span id="line-578"> public static Pair&lt;String, String&gt; getReferredToRegionAndFile(final String referenceFile) {</span>
<span class="source-line-no">579</span><span id="line-579"> Matcher m = REF_NAME_PATTERN.matcher(referenceFile);</span>
<span class="source-line-no">580</span><span id="line-580"> if (m == null || !m.matches()) {</span>
<span class="source-line-no">581</span><span id="line-581"> LOG.warn("Failed match of store file name {}", referenceFile);</span>
<span class="source-line-no">582</span><span id="line-582"> throw new IllegalArgumentException("Failed match of store file name " + referenceFile);</span>
<span class="source-line-no">583</span><span id="line-583"> }</span>
<span class="source-line-no">584</span><span id="line-584"> String referencedRegion = m.group(2);</span>
<span class="source-line-no">585</span><span id="line-585"> String referencedFile = m.group(1);</span>
<span class="source-line-no">586</span><span id="line-586"> LOG.trace("reference {} to region={} file={}", referenceFile, referencedRegion, referencedFile);</span>
<span class="source-line-no">587</span><span id="line-587"> return new Pair&lt;&gt;(referencedRegion, referencedFile);</span>
<span class="source-line-no">588</span><span id="line-588"> }</span>
<span class="source-line-no">589</span><span id="line-589"></span>
<span class="source-line-no">590</span><span id="line-590"> /**</span>
<span class="source-line-no">591</span><span id="line-591"> * Validate the store file name.</span>
<span class="source-line-no">592</span><span id="line-592"> * @param fileName name of the file to validate</span>
<span class="source-line-no">593</span><span id="line-593"> * @return &lt;tt&gt;true&lt;/tt&gt; if the file could be a valid store file, &lt;tt&gt;false&lt;/tt&gt; otherwise</span>
<span class="source-line-no">594</span><span id="line-594"> */</span>
<span class="source-line-no">595</span><span id="line-595"> public static boolean validateStoreFileName(final String fileName) {</span>
<span class="source-line-no">596</span><span id="line-596"> if (HFileLink.isHFileLink(fileName) || isReference(fileName)) {</span>
<span class="source-line-no">597</span><span id="line-597"> return true;</span>
<span class="source-line-no">598</span><span id="line-598"> }</span>
<span class="source-line-no">599</span><span id="line-599"> return !fileName.contains("-");</span>
<span class="source-line-no">600</span><span id="line-600"> }</span>
<span class="source-line-no">601</span><span id="line-601"></span>
<span class="source-line-no">602</span><span id="line-602"> /**</span>
<span class="source-line-no">603</span><span id="line-603"> * Return if the specified file is a valid store file or not.</span>
<span class="source-line-no">604</span><span id="line-604"> * @param fileStatus The {@link FileStatus} of the file</span>
<span class="source-line-no">605</span><span id="line-605"> * @return &lt;tt&gt;true&lt;/tt&gt; if the file is valid</span>
<span class="source-line-no">606</span><span id="line-606"> */</span>
<span class="source-line-no">607</span><span id="line-607"> public static boolean isValid(final FileStatus fileStatus) throws IOException {</span>
<span class="source-line-no">608</span><span id="line-608"> final Path p = fileStatus.getPath();</span>
<span class="source-line-no">609</span><span id="line-609"></span>
<span class="source-line-no">610</span><span id="line-610"> if (fileStatus.isDirectory()) {</span>
<span class="source-line-no">611</span><span id="line-611"> return false;</span>
<span class="source-line-no">612</span><span id="line-612"> }</span>
<span class="source-line-no">613</span><span id="line-613"></span>
<span class="source-line-no">614</span><span id="line-614"> // Check for empty hfile. Should never be the case but can happen</span>
<span class="source-line-no">615</span><span id="line-615"> // after data loss in hdfs for whatever reason (upgrade, etc.): HBASE-646</span>
<span class="source-line-no">616</span><span id="line-616"> // NOTE: that the HFileLink is just a name, so it's an empty file.</span>
<span class="source-line-no">617</span><span id="line-617"> if (!HFileLink.isHFileLink(p) &amp;&amp; fileStatus.getLen() &lt;= 0) {</span>
<span class="source-line-no">618</span><span id="line-618"> LOG.warn("Skipping {} because it is empty. HBASE-646 DATA LOSS?", p);</span>
<span class="source-line-no">619</span><span id="line-619"> return false;</span>
<span class="source-line-no">620</span><span id="line-620"> }</span>
<span class="source-line-no">621</span><span id="line-621"></span>
<span class="source-line-no">622</span><span id="line-622"> return validateStoreFileName(p.getName());</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"> /**</span>
<span class="source-line-no">626</span><span id="line-626"> * helper function to compute HDFS blocks distribution of a given reference file.For reference</span>
<span class="source-line-no">627</span><span id="line-627"> * file, we don't compute the exact value. We use some estimate instead given it might be good</span>
<span class="source-line-no">628</span><span id="line-628"> * enough. we assume bottom part takes the first half of reference file, top part takes the second</span>
<span class="source-line-no">629</span><span id="line-629"> * half of the reference file. This is just estimate, given midkey ofregion != midkey of HFile,</span>
<span class="source-line-no">630</span><span id="line-630"> * also the number and size of keys vary. If this estimate isn't good enough, we can improve it</span>
<span class="source-line-no">631</span><span id="line-631"> * later.</span>
<span class="source-line-no">632</span><span id="line-632"> * @param fs The FileSystem</span>
<span class="source-line-no">633</span><span id="line-633"> * @param reference The reference</span>
<span class="source-line-no">634</span><span id="line-634"> * @param status The reference FileStatus</span>
<span class="source-line-no">635</span><span id="line-635"> * @return HDFS blocks distribution</span>
<span class="source-line-no">636</span><span id="line-636"> */</span>
<span class="source-line-no">637</span><span id="line-637"> private static HDFSBlocksDistribution computeRefFileHDFSBlockDistribution(final FileSystem fs,</span>
<span class="source-line-no">638</span><span id="line-638"> final Reference reference, final FileStatus status) throws IOException {</span>
<span class="source-line-no">639</span><span id="line-639"> if (status == null) {</span>
<span class="source-line-no">640</span><span id="line-640"> return null;</span>
<span class="source-line-no">641</span><span id="line-641"> }</span>
<span class="source-line-no">642</span><span id="line-642"></span>
<span class="source-line-no">643</span><span id="line-643"> long start = 0;</span>
<span class="source-line-no">644</span><span id="line-644"> long length = 0;</span>
<span class="source-line-no">645</span><span id="line-645"></span>
<span class="source-line-no">646</span><span id="line-646"> if (Reference.isTopFileRegion(reference.getFileRegion())) {</span>
<span class="source-line-no">647</span><span id="line-647"> start = status.getLen() / 2;</span>
<span class="source-line-no">648</span><span id="line-648"> length = status.getLen() - status.getLen() / 2;</span>
<span class="source-line-no">649</span><span id="line-649"> } else {</span>
<span class="source-line-no">650</span><span id="line-650"> start = 0;</span>
<span class="source-line-no">651</span><span id="line-651"> length = status.getLen() / 2;</span>
<span class="source-line-no">652</span><span id="line-652"> }</span>
<span class="source-line-no">653</span><span id="line-653"> return FSUtils.computeHDFSBlocksDistribution(fs, status, start, length);</span>
<span class="source-line-no">654</span><span id="line-654"> }</span>
<span class="source-line-no">655</span><span id="line-655"></span>
<span class="source-line-no">656</span><span id="line-656"> @Override</span>
<span class="source-line-no">657</span><span id="line-657"> public boolean equals(Object that) {</span>
<span class="source-line-no">658</span><span id="line-658"> if (this == that) {</span>
<span class="source-line-no">659</span><span id="line-659"> return true;</span>
<span class="source-line-no">660</span><span id="line-660"> }</span>
<span class="source-line-no">661</span><span id="line-661"> if (that == null) {</span>
<span class="source-line-no">662</span><span id="line-662"> return false;</span>
<span class="source-line-no">663</span><span id="line-663"> }</span>
<span class="source-line-no">664</span><span id="line-664"></span>
<span class="source-line-no">665</span><span id="line-665"> if (!(that instanceof StoreFileInfo)) {</span>
<span class="source-line-no">666</span><span id="line-666"> return false;</span>
<span class="source-line-no">667</span><span id="line-667"> }</span>
<span class="source-line-no">668</span><span id="line-668"></span>
<span class="source-line-no">669</span><span id="line-669"> StoreFileInfo o = (StoreFileInfo) that;</span>
<span class="source-line-no">670</span><span id="line-670"> if (initialPath != null &amp;&amp; o.initialPath == null) {</span>
<span class="source-line-no">671</span><span id="line-671"> return false;</span>
<span class="source-line-no">672</span><span id="line-672"> }</span>
<span class="source-line-no">673</span><span id="line-673"> if (initialPath == null &amp;&amp; o.initialPath != null) {</span>
<span class="source-line-no">674</span><span id="line-674"> return false;</span>
<span class="source-line-no">675</span><span id="line-675"> }</span>
<span class="source-line-no">676</span><span id="line-676"> if (initialPath != o.initialPath &amp;&amp; initialPath != null &amp;&amp; !initialPath.equals(o.initialPath)) {</span>
<span class="source-line-no">677</span><span id="line-677"> return false;</span>
<span class="source-line-no">678</span><span id="line-678"> }</span>
<span class="source-line-no">679</span><span id="line-679"> if (reference != null &amp;&amp; o.reference == null) {</span>
<span class="source-line-no">680</span><span id="line-680"> return false;</span>
<span class="source-line-no">681</span><span id="line-681"> }</span>
<span class="source-line-no">682</span><span id="line-682"> if (reference == null &amp;&amp; o.reference != null) {</span>
<span class="source-line-no">683</span><span id="line-683"> return false;</span>
<span class="source-line-no">684</span><span id="line-684"> }</span>
<span class="source-line-no">685</span><span id="line-685"> if (reference != o.reference &amp;&amp; reference != null &amp;&amp; !reference.equals(o.reference)) {</span>
<span class="source-line-no">686</span><span id="line-686"> return false;</span>
<span class="source-line-no">687</span><span id="line-687"> }</span>
<span class="source-line-no">688</span><span id="line-688"></span>
<span class="source-line-no">689</span><span id="line-689"> if (link != null &amp;&amp; o.link == null) {</span>
<span class="source-line-no">690</span><span id="line-690"> return false;</span>
<span class="source-line-no">691</span><span id="line-691"> }</span>
<span class="source-line-no">692</span><span id="line-692"> if (link == null &amp;&amp; o.link != null) {</span>
<span class="source-line-no">693</span><span id="line-693"> return false;</span>
<span class="source-line-no">694</span><span id="line-694"> }</span>
<span class="source-line-no">695</span><span id="line-695"> if (link != o.link &amp;&amp; link != null &amp;&amp; !link.equals(o.link)) {</span>
<span class="source-line-no">696</span><span id="line-696"> return false;</span>
<span class="source-line-no">697</span><span id="line-697"> }</span>
<span class="source-line-no">698</span><span id="line-698"></span>
<span class="source-line-no">699</span><span id="line-699"> return true;</span>
<span class="source-line-no">700</span><span id="line-700"> }</span>
<span class="source-line-no">701</span><span id="line-701"></span>
<span class="source-line-no">702</span><span id="line-702"> @Override</span>
<span class="source-line-no">703</span><span id="line-703"> public int hashCode() {</span>
<span class="source-line-no">704</span><span id="line-704"> int hash = 17;</span>
<span class="source-line-no">705</span><span id="line-705"> hash = hash * 31 + ((reference == null) ? 0 : reference.hashCode());</span>
<span class="source-line-no">706</span><span id="line-706"> hash = hash * 31 + ((initialPath == null) ? 0 : initialPath.hashCode());</span>
<span class="source-line-no">707</span><span id="line-707"> hash = hash * 31 + ((link == null) ? 0 : link.hashCode());</span>
<span class="source-line-no">708</span><span id="line-708"> return hash;</span>
<span class="source-line-no">709</span><span id="line-709"> }</span>
<span class="source-line-no">710</span><span id="line-710"></span>
<span class="source-line-no">711</span><span id="line-711"> /**</span>
<span class="source-line-no">712</span><span id="line-712"> * Return the active file name that contains the real data.</span>
<span class="source-line-no">713</span><span id="line-713"> * &lt;p&gt;</span>
<span class="source-line-no">714</span><span id="line-714"> * For referenced hfile, we will return the name of the reference file as it will be used to</span>
<span class="source-line-no">715</span><span id="line-715"> * construct the StoreFileReader. And for linked hfile, we will return the name of the file being</span>
<span class="source-line-no">716</span><span id="line-716"> * linked.</span>
<span class="source-line-no">717</span><span id="line-717"> */</span>
<span class="source-line-no">718</span><span id="line-718"> public String getActiveFileName() {</span>
<span class="source-line-no">719</span><span id="line-719"> if (reference != null || link == null) {</span>
<span class="source-line-no">720</span><span id="line-720"> return initialPath.getName();</span>
<span class="source-line-no">721</span><span id="line-721"> } else {</span>
<span class="source-line-no">722</span><span id="line-722"> return HFileLink.getReferencedHFileName(initialPath.getName());</span>
<span class="source-line-no">723</span><span id="line-723"> }</span>
<span class="source-line-no">724</span><span id="line-724"> }</span>
<span class="source-line-no">725</span><span id="line-725"></span>
<span class="source-line-no">726</span><span id="line-726"> FileSystem getFileSystem() {</span>
<span class="source-line-no">727</span><span id="line-727"> return this.fs;</span>
<span class="source-line-no">728</span><span id="line-728"> }</span>
<span class="source-line-no">729</span><span id="line-729"></span>
<span class="source-line-no">730</span><span id="line-730"> boolean isNoReadahead() {</span>
<span class="source-line-no">731</span><span id="line-731"> return this.noReadahead;</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"> public HFileInfo getHFileInfo() {</span>
<span class="source-line-no">735</span><span id="line-735"> return hfileInfo;</span>
<span class="source-line-no">736</span><span id="line-736"> }</span>
<span class="source-line-no">737</span><span id="line-737"></span>
<span class="source-line-no">738</span><span id="line-738"> void initHDFSBlocksDistribution() throws IOException {</span>
<span class="source-line-no">739</span><span id="line-739"> hdfsBlocksDistribution = computeHDFSBlocksDistribution(fs);</span>
<span class="source-line-no">740</span><span id="line-740"> }</span>
<span class="source-line-no">741</span><span id="line-741"></span>
<span class="source-line-no">742</span><span id="line-742"> StoreFileReader preStoreFileReaderOpen(ReaderContext context, CacheConfig cacheConf)</span>
<span class="source-line-no">743</span><span id="line-743"> throws IOException {</span>
<span class="source-line-no">744</span><span id="line-744"> StoreFileReader reader = null;</span>
<span class="source-line-no">745</span><span id="line-745"> if (this.coprocessorHost != null) {</span>
<span class="source-line-no">746</span><span id="line-746"> reader = this.coprocessorHost.preStoreFileReaderOpen(fs, this.getPath(),</span>
<span class="source-line-no">747</span><span id="line-747"> context.getInputStreamWrapper(), context.getFileSize(), cacheConf, reference);</span>
<span class="source-line-no">748</span><span id="line-748"> }</span>
<span class="source-line-no">749</span><span id="line-749"> return reader;</span>
<span class="source-line-no">750</span><span id="line-750"> }</span>
<span class="source-line-no">751</span><span id="line-751"></span>
<span class="source-line-no">752</span><span id="line-752"> StoreFileReader postStoreFileReaderOpen(ReaderContext context, CacheConfig cacheConf,</span>
<span class="source-line-no">753</span><span id="line-753"> StoreFileReader reader) throws IOException {</span>
<span class="source-line-no">754</span><span id="line-754"> StoreFileReader res = reader;</span>
<span class="source-line-no">755</span><span id="line-755"> if (this.coprocessorHost != null) {</span>
<span class="source-line-no">756</span><span id="line-756"> res = this.coprocessorHost.postStoreFileReaderOpen(fs, this.getPath(),</span>
<span class="source-line-no">757</span><span id="line-757"> context.getInputStreamWrapper(), context.getFileSize(), cacheConf, reference, reader);</span>
<span class="source-line-no">758</span><span id="line-758"> }</span>
<span class="source-line-no">759</span><span id="line-759"> return res;</span>
<span class="source-line-no">760</span><span id="line-760"> }</span>
<span class="source-line-no">761</span><span id="line-761"></span>
<span class="source-line-no">762</span><span id="line-762"> public void initHFileInfo(ReaderContext context) throws IOException {</span>
<span class="source-line-no">763</span><span id="line-763"> this.hfileInfo = new HFileInfo(context, conf);</span>
<span class="source-line-no">764</span><span id="line-764"> }</span>
<span class="source-line-no">765</span><span id="line-765"></span>
<span class="source-line-no">766</span><span id="line-766"> int getRefCount() {</span>
<span class="source-line-no">767</span><span id="line-767"> return this.refCount.get();</span>
<span class="source-line-no">768</span><span id="line-768"> }</span>
<span class="source-line-no">769</span><span id="line-769"></span>
<span class="source-line-no">770</span><span id="line-770"> int increaseRefCount() {</span>
<span class="source-line-no">771</span><span id="line-771"> return this.refCount.incrementAndGet();</span>
<span class="source-line-no">772</span><span id="line-772"> }</span>
<span class="source-line-no">773</span><span id="line-773"></span>
<span class="source-line-no">774</span><span id="line-774"> int decreaseRefCount() {</span>
<span class="source-line-no">775</span><span id="line-775"> return this.refCount.decrementAndGet();</span>
<span class="source-line-no">776</span><span id="line-776"> }</span>
<span class="source-line-no">777</span><span id="line-777"></span>
<span class="source-line-no">778</span><span id="line-778">}</span>
</pre>
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