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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.mob;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.ArrayList;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.Collections;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.List;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.io.hfile.CacheConfig;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.regionserver.BloomType;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.regionserver.HStoreFile;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.regionserver.StoreFileScanner;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34">/**</span> |
| <span class="source-line-no">035</span><span id="line-35"> * The mob file.</span> |
| <span class="source-line-no">036</span><span id="line-36"> */</span> |
| <span class="source-line-no">037</span><span id="line-37">@InterfaceAudience.Private</span> |
| <span class="source-line-no">038</span><span id="line-38">public class MobFile {</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> private HStoreFile sf;</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42"> // internal use only for sub classes</span> |
| <span class="source-line-no">043</span><span id="line-43"> protected MobFile() {</span> |
| <span class="source-line-no">044</span><span id="line-44"> }</span> |
| <span class="source-line-no">045</span><span id="line-45"></span> |
| <span class="source-line-no">046</span><span id="line-46"> protected MobFile(HStoreFile sf) {</span> |
| <span class="source-line-no">047</span><span id="line-47"> this.sf = sf;</span> |
| <span class="source-line-no">048</span><span id="line-48"> }</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> /**</span> |
| <span class="source-line-no">051</span><span id="line-51"> * Internal use only. This is used by the sweeper.</span> |
| <span class="source-line-no">052</span><span id="line-52"> * @return The store file scanner.</span> |
| <span class="source-line-no">053</span><span id="line-53"> */</span> |
| <span class="source-line-no">054</span><span id="line-54"> public StoreFileScanner getScanner() throws IOException {</span> |
| <span class="source-line-no">055</span><span id="line-55"> List<HStoreFile> sfs = new ArrayList<>();</span> |
| <span class="source-line-no">056</span><span id="line-56"> sfs.add(sf);</span> |
| <span class="source-line-no">057</span><span id="line-57"> List<StoreFileScanner> sfScanners = StoreFileScanner.getScannersForStoreFiles(sfs, false, true,</span> |
| <span class="source-line-no">058</span><span id="line-58"> false, false, sf.getMaxMemStoreTS());</span> |
| <span class="source-line-no">059</span><span id="line-59"></span> |
| <span class="source-line-no">060</span><span id="line-60"> return sfScanners.get(0);</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> /**</span> |
| <span class="source-line-no">064</span><span id="line-64"> * Reads a cell from the mob file.</span> |
| <span class="source-line-no">065</span><span id="line-65"> * @param search The cell need to be searched in the mob file.</span> |
| <span class="source-line-no">066</span><span id="line-66"> * @param cacheMobBlocks Should this scanner cache blocks.</span> |
| <span class="source-line-no">067</span><span id="line-67"> * @return The cell in the mob file.</span> |
| <span class="source-line-no">068</span><span id="line-68"> */</span> |
| <span class="source-line-no">069</span><span id="line-69"> public MobCell readCell(ExtendedCell search, boolean cacheMobBlocks) throws IOException {</span> |
| <span class="source-line-no">070</span><span id="line-70"> return readCell(search, cacheMobBlocks, sf.getMaxMemStoreTS());</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> /**</span> |
| <span class="source-line-no">074</span><span id="line-74"> * Reads a cell from the mob file.</span> |
| <span class="source-line-no">075</span><span id="line-75"> * @param search The cell need to be searched in the mob file.</span> |
| <span class="source-line-no">076</span><span id="line-76"> * @param cacheMobBlocks Should this scanner cache blocks.</span> |
| <span class="source-line-no">077</span><span id="line-77"> * @param readPt the read point.</span> |
| <span class="source-line-no">078</span><span id="line-78"> * @return The cell in the mob file.</span> |
| <span class="source-line-no">079</span><span id="line-79"> */</span> |
| <span class="source-line-no">080</span><span id="line-80"> public MobCell readCell(ExtendedCell search, boolean cacheMobBlocks, long readPt)</span> |
| <span class="source-line-no">081</span><span id="line-81"> throws IOException {</span> |
| <span class="source-line-no">082</span><span id="line-82"> StoreFileScanner scanner = null;</span> |
| <span class="source-line-no">083</span><span id="line-83"> boolean succ = false;</span> |
| <span class="source-line-no">084</span><span id="line-84"> try {</span> |
| <span class="source-line-no">085</span><span id="line-85"> List<StoreFileScanner> sfScanners = StoreFileScanner.getScannersForStoreFiles(</span> |
| <span class="source-line-no">086</span><span id="line-86"> Collections.singletonList(sf), cacheMobBlocks, true, false, false, readPt);</span> |
| <span class="source-line-no">087</span><span id="line-87"> if (!sfScanners.isEmpty()) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> scanner = sfScanners.get(0);</span> |
| <span class="source-line-no">089</span><span id="line-89"> if (scanner.seek(search)) {</span> |
| <span class="source-line-no">090</span><span id="line-90"> MobCell mobCell = new MobCell(scanner.peek(), scanner);</span> |
| <span class="source-line-no">091</span><span id="line-91"> succ = true;</span> |
| <span class="source-line-no">092</span><span id="line-92"> return mobCell;</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95"> return null;</span> |
| <span class="source-line-no">096</span><span id="line-96"> } finally {</span> |
| <span class="source-line-no">097</span><span id="line-97"> if (scanner != null && !succ) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> scanner.close();</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> /**</span> |
| <span class="source-line-no">104</span><span id="line-104"> * Gets the file name.</span> |
| <span class="source-line-no">105</span><span id="line-105"> * @return The file name.</span> |
| <span class="source-line-no">106</span><span id="line-106"> */</span> |
| <span class="source-line-no">107</span><span id="line-107"> public String getFileName() {</span> |
| <span class="source-line-no">108</span><span id="line-108"> return sf.getPath().getName();</span> |
| <span class="source-line-no">109</span><span id="line-109"> }</span> |
| <span class="source-line-no">110</span><span id="line-110"></span> |
| <span class="source-line-no">111</span><span id="line-111"> /**</span> |
| <span class="source-line-no">112</span><span id="line-112"> * Opens the underlying reader. It's not thread-safe. Use MobFileCache.openFile() instead.</span> |
| <span class="source-line-no">113</span><span id="line-113"> */</span> |
| <span class="source-line-no">114</span><span id="line-114"> public void open() throws IOException {</span> |
| <span class="source-line-no">115</span><span id="line-115"> sf.initReader();</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"></span> |
| <span class="source-line-no">118</span><span id="line-118"> /**</span> |
| <span class="source-line-no">119</span><span id="line-119"> * Closes the underlying reader, but do no evict blocks belonging to this file. It's not</span> |
| <span class="source-line-no">120</span><span id="line-120"> * thread-safe. Use MobFileCache.closeFile() instead.</span> |
| <span class="source-line-no">121</span><span id="line-121"> */</span> |
| <span class="source-line-no">122</span><span id="line-122"> public void close() throws IOException {</span> |
| <span class="source-line-no">123</span><span id="line-123"> if (sf != null) {</span> |
| <span class="source-line-no">124</span><span id="line-124"> sf.closeStoreFile(false);</span> |
| <span class="source-line-no">125</span><span id="line-125"> sf = null;</span> |
| <span class="source-line-no">126</span><span id="line-126"> }</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"></span> |
| <span class="source-line-no">129</span><span id="line-129"> /**</span> |
| <span class="source-line-no">130</span><span id="line-130"> * Creates an instance of the MobFile.</span> |
| <span class="source-line-no">131</span><span id="line-131"> * @param fs The file system.</span> |
| <span class="source-line-no">132</span><span id="line-132"> * @param path The path of the underlying StoreFile.</span> |
| <span class="source-line-no">133</span><span id="line-133"> * @param conf The configuration.</span> |
| <span class="source-line-no">134</span><span id="line-134"> * @param cacheConf The CacheConfig.</span> |
| <span class="source-line-no">135</span><span id="line-135"> * @return An instance of the MobFile.</span> |
| <span class="source-line-no">136</span><span id="line-136"> */</span> |
| <span class="source-line-no">137</span><span id="line-137"> public static MobFile create(FileSystem fs, Path path, Configuration conf, CacheConfig cacheConf)</span> |
| <span class="source-line-no">138</span><span id="line-138"> throws IOException {</span> |
| <span class="source-line-no">139</span><span id="line-139"> // XXX: primaryReplica is only used for constructing the key of block cache so it is not a</span> |
| <span class="source-line-no">140</span><span id="line-140"> // critical problem if we pass the wrong value, so here we always pass true. Need to fix later.</span> |
| <span class="source-line-no">141</span><span id="line-141"> HStoreFile sf = new HStoreFile(fs, path, conf, cacheConf, BloomType.NONE, true);</span> |
| <span class="source-line-no">142</span><span id="line-142"> return new MobFile(sf);</span> |
| <span class="source-line-no">143</span><span id="line-143"> }</span> |
| <span class="source-line-no">144</span><span id="line-144">}</span> |
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| </pre> |
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