| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.wal, class: RegionGroupingProvider, class: IdentityGroupingStrategy"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <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.wal;</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 static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.META_WAL_PROVIDER_ID;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</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 java.util.concurrent.ConcurrentHashMap;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.ConcurrentMap;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.locks.Lock;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.stream.Collectors;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.conf.Configuration;</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.HConstants;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.regionserver.wal.MetricsWAL;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.util.KeyLocker;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.Logger;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40">/**</span> |
| <span class="source-line-no">041</span><span id="line-41"> * A WAL Provider that returns a WAL per group of regions. This provider follows the decorator</span> |
| <span class="source-line-no">042</span><span id="line-42"> * pattern and mainly holds the logic for WAL grouping. WAL creation/roll/close is delegated to</span> |
| <span class="source-line-no">043</span><span id="line-43"> * {@link #DELEGATE_PROVIDER} Region grouping is handled via {@link RegionGroupingStrategy} and can</span> |
| <span class="source-line-no">044</span><span id="line-44"> * be configured via the property "hbase.wal.regiongrouping.strategy". Current strategy choices are</span> |
| <span class="source-line-no">045</span><span id="line-45"> * <ul></span> |
| <span class="source-line-no">046</span><span id="line-46"> * <li><em>defaultStrategy</em> : Whatever strategy this version of HBase picks. currently</span> |
| <span class="source-line-no">047</span><span id="line-47"> * "bounded".</li></span> |
| <span class="source-line-no">048</span><span id="line-48"> * <li><em>identity</em> : each region belongs to its own group.</li></span> |
| <span class="source-line-no">049</span><span id="line-49"> * <li><em>bounded</em> : bounded number of groups and region evenly assigned to each group.</li></span> |
| <span class="source-line-no">050</span><span id="line-50"> * </ul></span> |
| <span class="source-line-no">051</span><span id="line-51"> * Optionally, a FQCN to a custom implementation may be given.</span> |
| <span class="source-line-no">052</span><span id="line-52"> */</span> |
| <span class="source-line-no">053</span><span id="line-53">@InterfaceAudience.Private</span> |
| <span class="source-line-no">054</span><span id="line-54">public class RegionGroupingProvider extends AbstractWALProvider {</span> |
| <span class="source-line-no">055</span><span id="line-55"> private static final Logger LOG = LoggerFactory.getLogger(RegionGroupingProvider.class);</span> |
| <span class="source-line-no">056</span><span id="line-56"></span> |
| <span class="source-line-no">057</span><span id="line-57"> /**</span> |
| <span class="source-line-no">058</span><span id="line-58"> * Map identifiers to a group number.</span> |
| <span class="source-line-no">059</span><span id="line-59"> */</span> |
| <span class="source-line-no">060</span><span id="line-60"> public static interface RegionGroupingStrategy {</span> |
| <span class="source-line-no">061</span><span id="line-61"> String GROUP_NAME_DELIMITER = ".";</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"> * Given an identifier and a namespace, pick a group.</span> |
| <span class="source-line-no">065</span><span id="line-65"> */</span> |
| <span class="source-line-no">066</span><span id="line-66"> String group(final byte[] identifier, byte[] namespace);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> void init(Configuration config, String providerId);</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> /**</span> |
| <span class="source-line-no">072</span><span id="line-72"> * Maps between configuration names for strategies and implementation classes.</span> |
| <span class="source-line-no">073</span><span id="line-73"> */</span> |
| <span class="source-line-no">074</span><span id="line-74"> static enum Strategies {</span> |
| <span class="source-line-no">075</span><span id="line-75"> defaultStrategy(BoundedGroupingStrategy.class),</span> |
| <span class="source-line-no">076</span><span id="line-76"> identity(IdentityGroupingStrategy.class),</span> |
| <span class="source-line-no">077</span><span id="line-77"> bounded(BoundedGroupingStrategy.class),</span> |
| <span class="source-line-no">078</span><span id="line-78"> namespace(NamespaceGroupingStrategy.class);</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> final Class<? extends RegionGroupingStrategy> clazz;</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> Strategies(Class<? extends RegionGroupingStrategy> clazz) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> this.clazz = clazz;</span> |
| <span class="source-line-no">084</span><span id="line-84"> }</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> /**</span> |
| <span class="source-line-no">088</span><span id="line-88"> * instantiate a strategy from a config property. requires conf to have already been set (as well</span> |
| <span class="source-line-no">089</span><span id="line-89"> * as anything the provider might need to read).</span> |
| <span class="source-line-no">090</span><span id="line-90"> */</span> |
| <span class="source-line-no">091</span><span id="line-91"> RegionGroupingStrategy getStrategy(final Configuration conf, final String key,</span> |
| <span class="source-line-no">092</span><span id="line-92"> final String defaultValue) throws IOException {</span> |
| <span class="source-line-no">093</span><span id="line-93"> Class<? extends RegionGroupingStrategy> clazz;</span> |
| <span class="source-line-no">094</span><span id="line-94"> try {</span> |
| <span class="source-line-no">095</span><span id="line-95"> clazz = Strategies.valueOf(conf.get(key, defaultValue)).clazz;</span> |
| <span class="source-line-no">096</span><span id="line-96"> } catch (IllegalArgumentException exception) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> // Fall back to them specifying a class name</span> |
| <span class="source-line-no">098</span><span id="line-98"> // Note that the passed default class shouldn't actually be used, since the above only fails</span> |
| <span class="source-line-no">099</span><span id="line-99"> // when there is a config value present.</span> |
| <span class="source-line-no">100</span><span id="line-100"> clazz = conf.getClass(key, IdentityGroupingStrategy.class, RegionGroupingStrategy.class);</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> LOG.info("Instantiating RegionGroupingStrategy of type " + clazz);</span> |
| <span class="source-line-no">103</span><span id="line-103"> try {</span> |
| <span class="source-line-no">104</span><span id="line-104"> final RegionGroupingStrategy result = clazz.getDeclaredConstructor().newInstance();</span> |
| <span class="source-line-no">105</span><span id="line-105"> result.init(conf, providerId);</span> |
| <span class="source-line-no">106</span><span id="line-106"> return result;</span> |
| <span class="source-line-no">107</span><span id="line-107"> } catch (Exception e) {</span> |
| <span class="source-line-no">108</span><span id="line-108"> LOG.error(</span> |
| <span class="source-line-no">109</span><span id="line-109"> "couldn't set up region grouping strategy, check config key " + REGION_GROUPING_STRATEGY);</span> |
| <span class="source-line-no">110</span><span id="line-110"> LOG.debug("Exception details for failure to load region grouping strategy.", e);</span> |
| <span class="source-line-no">111</span><span id="line-111"> throw new IOException("couldn't set up region grouping strategy", e);</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</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"> public static final String REGION_GROUPING_STRATEGY = "hbase.wal.regiongrouping.strategy";</span> |
| <span class="source-line-no">116</span><span id="line-116"> public static final String DEFAULT_REGION_GROUPING_STRATEGY = Strategies.defaultStrategy.name();</span> |
| <span class="source-line-no">117</span><span id="line-117"></span> |
| <span class="source-line-no">118</span><span id="line-118"> /** delegate provider for WAL creation/roll/close, but not support multiwal */</span> |
| <span class="source-line-no">119</span><span id="line-119"> public static final String DELEGATE_PROVIDER = "hbase.wal.regiongrouping.delegate.provider";</span> |
| <span class="source-line-no">120</span><span id="line-120"> public static final String DEFAULT_DELEGATE_PROVIDER =</span> |
| <span class="source-line-no">121</span><span id="line-121"> WALFactory.Providers.defaultProvider.name();</span> |
| <span class="source-line-no">122</span><span id="line-122"></span> |
| <span class="source-line-no">123</span><span id="line-123"> private static final String META_WAL_GROUP_NAME = "meta";</span> |
| <span class="source-line-no">124</span><span id="line-124"></span> |
| <span class="source-line-no">125</span><span id="line-125"> /** A group-provider mapping, make sure one-one rather than many-one mapping */</span> |
| <span class="source-line-no">126</span><span id="line-126"> private final ConcurrentMap<String, WALProvider> cached = new ConcurrentHashMap<>();</span> |
| <span class="source-line-no">127</span><span id="line-127"></span> |
| <span class="source-line-no">128</span><span id="line-128"> private final KeyLocker<String> createLock = new KeyLocker<>();</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> private RegionGroupingStrategy strategy;</span> |
| <span class="source-line-no">131</span><span id="line-131"></span> |
| <span class="source-line-no">132</span><span id="line-132"> private Class<? extends WALProvider> providerClass;</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> @Override</span> |
| <span class="source-line-no">135</span><span id="line-135"> protected void doInit(WALFactory factory, Configuration conf, String providerId)</span> |
| <span class="source-line-no">136</span><span id="line-136"> throws IOException {</span> |
| <span class="source-line-no">137</span><span id="line-137"> if (null != strategy) {</span> |
| <span class="source-line-no">138</span><span id="line-138"> throw new IllegalStateException("WALProvider.init should only be called once.");</span> |
| <span class="source-line-no">139</span><span id="line-139"> }</span> |
| <span class="source-line-no">140</span><span id="line-140"></span> |
| <span class="source-line-no">141</span><span id="line-141"> if (META_WAL_PROVIDER_ID.equals(providerId)) {</span> |
| <span class="source-line-no">142</span><span id="line-142"> // do not change the provider id if it is for meta</span> |
| <span class="source-line-no">143</span><span id="line-143"> this.providerId = providerId;</span> |
| <span class="source-line-no">144</span><span id="line-144"> } else {</span> |
| <span class="source-line-no">145</span><span id="line-145"> StringBuilder sb = new StringBuilder().append(factory.factoryId);</span> |
| <span class="source-line-no">146</span><span id="line-146"> if (providerId != null) {</span> |
| <span class="source-line-no">147</span><span id="line-147"> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {</span> |
| <span class="source-line-no">148</span><span id="line-148"> sb.append(providerId);</span> |
| <span class="source-line-no">149</span><span id="line-149"> } else {</span> |
| <span class="source-line-no">150</span><span id="line-150"> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);</span> |
| <span class="source-line-no">151</span><span id="line-151"> }</span> |
| <span class="source-line-no">152</span><span id="line-152"> }</span> |
| <span class="source-line-no">153</span><span id="line-153"> this.providerId = sb.toString();</span> |
| <span class="source-line-no">154</span><span id="line-154"> }</span> |
| <span class="source-line-no">155</span><span id="line-155"> this.strategy = getStrategy(conf, REGION_GROUPING_STRATEGY, DEFAULT_REGION_GROUPING_STRATEGY);</span> |
| <span class="source-line-no">156</span><span id="line-156"> this.providerClass = factory.getProviderClass(DELEGATE_PROVIDER, DEFAULT_DELEGATE_PROVIDER);</span> |
| <span class="source-line-no">157</span><span id="line-157"> if (providerClass.equals(this.getClass())) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> LOG.warn("delegate provider not support multiwal, falling back to defaultProvider.");</span> |
| <span class="source-line-no">159</span><span id="line-159"> providerClass = factory.getDefaultProvider().clazz;</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> private WALProvider createProvider(String group) throws IOException {</span> |
| <span class="source-line-no">164</span><span id="line-164"> WALProvider provider = WALFactory.createProvider(providerClass);</span> |
| <span class="source-line-no">165</span><span id="line-165"> provider.init(factory, conf,</span> |
| <span class="source-line-no">166</span><span id="line-166"> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : group, this.abortable);</span> |
| <span class="source-line-no">167</span><span id="line-167"> provider.addWALActionsListener(new MetricsWAL());</span> |
| <span class="source-line-no">168</span><span id="line-168"> return provider;</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"> private WALProvider getWALProvider(RegionInfo region) throws IOException {</span> |
| <span class="source-line-no">172</span><span id="line-172"> String group;</span> |
| <span class="source-line-no">173</span><span id="line-173"> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> group = META_WAL_GROUP_NAME;</span> |
| <span class="source-line-no">175</span><span id="line-175"> } else {</span> |
| <span class="source-line-no">176</span><span id="line-176"> byte[] id;</span> |
| <span class="source-line-no">177</span><span id="line-177"> byte[] namespace;</span> |
| <span class="source-line-no">178</span><span id="line-178"> if (region != null) {</span> |
| <span class="source-line-no">179</span><span id="line-179"> id = region.getEncodedNameAsBytes();</span> |
| <span class="source-line-no">180</span><span id="line-180"> namespace = region.getTable().getNamespace();</span> |
| <span class="source-line-no">181</span><span id="line-181"> } else {</span> |
| <span class="source-line-no">182</span><span id="line-182"> id = HConstants.EMPTY_BYTE_ARRAY;</span> |
| <span class="source-line-no">183</span><span id="line-183"> namespace = null;</span> |
| <span class="source-line-no">184</span><span id="line-184"> }</span> |
| <span class="source-line-no">185</span><span id="line-185"> group = strategy.group(id, namespace);</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"> WALProvider provider = cached.get(group);</span> |
| <span class="source-line-no">188</span><span id="line-188"> if (provider == null) {</span> |
| <span class="source-line-no">189</span><span id="line-189"> Lock lock = createLock.acquireLock(group);</span> |
| <span class="source-line-no">190</span><span id="line-190"> try {</span> |
| <span class="source-line-no">191</span><span id="line-191"> provider = cached.get(group);</span> |
| <span class="source-line-no">192</span><span id="line-192"> if (provider == null) {</span> |
| <span class="source-line-no">193</span><span id="line-193"> provider = createProvider(group);</span> |
| <span class="source-line-no">194</span><span id="line-194"> // Notice that there is an assumption that the addWALActionsListener method must be called</span> |
| <span class="source-line-no">195</span><span id="line-195"> // before the getWAL method, so we can make sure there is no sub WALProvider yet, so we</span> |
| <span class="source-line-no">196</span><span id="line-196"> // only add the listener to our listeners list without calling addWALActionListener for</span> |
| <span class="source-line-no">197</span><span id="line-197"> // each WALProvider. Although it is no hurt to execute an extra loop to call</span> |
| <span class="source-line-no">198</span><span id="line-198"> // addWALActionListener for each WALProvider, but if the extra code actually works, then</span> |
| <span class="source-line-no">199</span><span id="line-199"> // we will have other big problems. So leave it as is.</span> |
| <span class="source-line-no">200</span><span id="line-200"> listeners.forEach(provider::addWALActionsListener);</span> |
| <span class="source-line-no">201</span><span id="line-201"> cached.put(group, provider);</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"> } finally {</span> |
| <span class="source-line-no">204</span><span id="line-204"> lock.unlock();</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"> return provider;</span> |
| <span class="source-line-no">208</span><span id="line-208"> }</span> |
| <span class="source-line-no">209</span><span id="line-209"></span> |
| <span class="source-line-no">210</span><span id="line-210"> @Override</span> |
| <span class="source-line-no">211</span><span id="line-211"> protected WAL getWAL0(RegionInfo region) throws IOException {</span> |
| <span class="source-line-no">212</span><span id="line-212"> String group;</span> |
| <span class="source-line-no">213</span><span id="line-213"> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {</span> |
| <span class="source-line-no">214</span><span id="line-214"> group = META_WAL_GROUP_NAME;</span> |
| <span class="source-line-no">215</span><span id="line-215"> } else {</span> |
| <span class="source-line-no">216</span><span id="line-216"> byte[] id;</span> |
| <span class="source-line-no">217</span><span id="line-217"> byte[] namespace;</span> |
| <span class="source-line-no">218</span><span id="line-218"> if (region != null) {</span> |
| <span class="source-line-no">219</span><span id="line-219"> id = region.getEncodedNameAsBytes();</span> |
| <span class="source-line-no">220</span><span id="line-220"> namespace = region.getTable().getNamespace();</span> |
| <span class="source-line-no">221</span><span id="line-221"> } else {</span> |
| <span class="source-line-no">222</span><span id="line-222"> id = HConstants.EMPTY_BYTE_ARRAY;</span> |
| <span class="source-line-no">223</span><span id="line-223"> namespace = null;</span> |
| <span class="source-line-no">224</span><span id="line-224"> }</span> |
| <span class="source-line-no">225</span><span id="line-225"> group = strategy.group(id, namespace);</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> return getWAL(group);</span> |
| <span class="source-line-no">228</span><span id="line-228"> }</span> |
| <span class="source-line-no">229</span><span id="line-229"></span> |
| <span class="source-line-no">230</span><span id="line-230"> @Override</span> |
| <span class="source-line-no">231</span><span id="line-231"> protected List<WAL> getWALs0() {</span> |
| <span class="source-line-no">232</span><span id="line-232"> return cached.values().stream().flatMap(p -> p.getWALs().stream()).collect(Collectors.toList());</span> |
| <span class="source-line-no">233</span><span id="line-233"> }</span> |
| <span class="source-line-no">234</span><span id="line-234"></span> |
| <span class="source-line-no">235</span><span id="line-235"> private WAL getWAL(String group) throws IOException {</span> |
| <span class="source-line-no">236</span><span id="line-236"> WALProvider provider = cached.get(group);</span> |
| <span class="source-line-no">237</span><span id="line-237"> if (provider == null) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> Lock lock = createLock.acquireLock(group);</span> |
| <span class="source-line-no">239</span><span id="line-239"> try {</span> |
| <span class="source-line-no">240</span><span id="line-240"> provider = cached.get(group);</span> |
| <span class="source-line-no">241</span><span id="line-241"> if (provider == null) {</span> |
| <span class="source-line-no">242</span><span id="line-242"> provider = createProvider(group);</span> |
| <span class="source-line-no">243</span><span id="line-243"> listeners.forEach(provider::addWALActionsListener);</span> |
| <span class="source-line-no">244</span><span id="line-244"> cached.put(group, provider);</span> |
| <span class="source-line-no">245</span><span id="line-245"> }</span> |
| <span class="source-line-no">246</span><span id="line-246"> } finally {</span> |
| <span class="source-line-no">247</span><span id="line-247"> lock.unlock();</span> |
| <span class="source-line-no">248</span><span id="line-248"> }</span> |
| <span class="source-line-no">249</span><span id="line-249"> }</span> |
| <span class="source-line-no">250</span><span id="line-250"> return provider.getWAL(null);</span> |
| <span class="source-line-no">251</span><span id="line-251"> }</span> |
| <span class="source-line-no">252</span><span id="line-252"></span> |
| <span class="source-line-no">253</span><span id="line-253"> static class IdentityGroupingStrategy implements RegionGroupingStrategy {</span> |
| <span class="source-line-no">254</span><span id="line-254"> @Override</span> |
| <span class="source-line-no">255</span><span id="line-255"> public void init(Configuration config, String providerId) {</span> |
| <span class="source-line-no">256</span><span id="line-256"> }</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> @Override</span> |
| <span class="source-line-no">259</span><span id="line-259"> public String group(final byte[] identifier, final byte[] namespace) {</span> |
| <span class="source-line-no">260</span><span id="line-260"> return Bytes.toString(identifier);</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</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"> @Override</span> |
| <span class="source-line-no">265</span><span id="line-265"> protected WAL createRemoteWAL(RegionInfo region, FileSystem remoteFs, Path remoteWALDir,</span> |
| <span class="source-line-no">266</span><span id="line-266"> String prefix, String suffix) throws IOException {</span> |
| <span class="source-line-no">267</span><span id="line-267"> WALProvider provider = getWALProvider(region);</span> |
| <span class="source-line-no">268</span><span id="line-268"> if (provider instanceof AbstractWALProvider) {</span> |
| <span class="source-line-no">269</span><span id="line-269"> return ((AbstractWALProvider) provider).createRemoteWAL(region, remoteFs, remoteWALDir,</span> |
| <span class="source-line-no">270</span><span id="line-270"> prefix, suffix);</span> |
| <span class="source-line-no">271</span><span id="line-271"> }</span> |
| <span class="source-line-no">272</span><span id="line-272"> throw new IOException(</span> |
| <span class="source-line-no">273</span><span id="line-273"> provider.getClass().getSimpleName() + " does not support creating remote WAL");</span> |
| <span class="source-line-no">274</span><span id="line-274"> }</span> |
| <span class="source-line-no">275</span><span id="line-275"></span> |
| <span class="source-line-no">276</span><span id="line-276"> @Override</span> |
| <span class="source-line-no">277</span><span id="line-277"> protected void shutdown0() throws IOException {</span> |
| <span class="source-line-no">278</span><span id="line-278"> // save the last exception and rethrow</span> |
| <span class="source-line-no">279</span><span id="line-279"> IOException failure = null;</span> |
| <span class="source-line-no">280</span><span id="line-280"> for (WALProvider provider : cached.values()) {</span> |
| <span class="source-line-no">281</span><span id="line-281"> try {</span> |
| <span class="source-line-no">282</span><span id="line-282"> provider.shutdown();</span> |
| <span class="source-line-no">283</span><span id="line-283"> } catch (IOException e) {</span> |
| <span class="source-line-no">284</span><span id="line-284"> LOG.error("Problem shutting down wal provider '" + provider + "': " + e.getMessage());</span> |
| <span class="source-line-no">285</span><span id="line-285"> if (LOG.isDebugEnabled()) {</span> |
| <span class="source-line-no">286</span><span id="line-286"> LOG.debug("Details of problem shutting down wal provider '" + provider + "'", e);</span> |
| <span class="source-line-no">287</span><span id="line-287"> }</span> |
| <span class="source-line-no">288</span><span id="line-288"> failure = e;</span> |
| <span class="source-line-no">289</span><span id="line-289"> }</span> |
| <span class="source-line-no">290</span><span id="line-290"> }</span> |
| <span class="source-line-no">291</span><span id="line-291"> if (failure != null) {</span> |
| <span class="source-line-no">292</span><span id="line-292"> throw failure;</span> |
| <span class="source-line-no">293</span><span id="line-293"> }</span> |
| <span class="source-line-no">294</span><span id="line-294"> }</span> |
| <span class="source-line-no">295</span><span id="line-295"></span> |
| <span class="source-line-no">296</span><span id="line-296"> @Override</span> |
| <span class="source-line-no">297</span><span id="line-297"> protected void close0() throws IOException {</span> |
| <span class="source-line-no">298</span><span id="line-298"> // save the last exception and rethrow</span> |
| <span class="source-line-no">299</span><span id="line-299"> IOException failure = null;</span> |
| <span class="source-line-no">300</span><span id="line-300"> for (WALProvider provider : cached.values()) {</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"> provider.close();</span> |
| <span class="source-line-no">303</span><span id="line-303"> } catch (IOException e) {</span> |
| <span class="source-line-no">304</span><span id="line-304"> LOG.error("Problem closing wal provider '" + provider + "': " + e.getMessage());</span> |
| <span class="source-line-no">305</span><span id="line-305"> if (LOG.isDebugEnabled()) {</span> |
| <span class="source-line-no">306</span><span id="line-306"> LOG.debug("Details of problem closing wal provider '" + provider + "'", e);</span> |
| <span class="source-line-no">307</span><span id="line-307"> }</span> |
| <span class="source-line-no">308</span><span id="line-308"> failure = e;</span> |
| <span class="source-line-no">309</span><span id="line-309"> }</span> |
| <span class="source-line-no">310</span><span id="line-310"> }</span> |
| <span class="source-line-no">311</span><span id="line-311"> if (failure != null) {</span> |
| <span class="source-line-no">312</span><span id="line-312"> throw failure;</span> |
| <span class="source-line-no">313</span><span id="line-313"> }</span> |
| <span class="source-line-no">314</span><span id="line-314"> }</span> |
| <span class="source-line-no">315</span><span id="line-315"></span> |
| <span class="source-line-no">316</span><span id="line-316"> @Override</span> |
| <span class="source-line-no">317</span><span id="line-317"> protected long getNumLogFiles0() {</span> |
| <span class="source-line-no">318</span><span id="line-318"> long numLogFiles = 0;</span> |
| <span class="source-line-no">319</span><span id="line-319"> for (WALProvider provider : cached.values()) {</span> |
| <span class="source-line-no">320</span><span id="line-320"> numLogFiles += provider.getNumLogFiles();</span> |
| <span class="source-line-no">321</span><span id="line-321"> }</span> |
| <span class="source-line-no">322</span><span id="line-322"> return numLogFiles;</span> |
| <span class="source-line-no">323</span><span id="line-323"> }</span> |
| <span class="source-line-no">324</span><span id="line-324"></span> |
| <span class="source-line-no">325</span><span id="line-325"> @Override</span> |
| <span class="source-line-no">326</span><span id="line-326"> protected long getLogFileSize0() {</span> |
| <span class="source-line-no">327</span><span id="line-327"> long logFileSize = 0;</span> |
| <span class="source-line-no">328</span><span id="line-328"> for (WALProvider provider : cached.values()) {</span> |
| <span class="source-line-no">329</span><span id="line-329"> logFileSize += provider.getLogFileSize();</span> |
| <span class="source-line-no">330</span><span id="line-330"> }</span> |
| <span class="source-line-no">331</span><span id="line-331"> return logFileSize;</span> |
| <span class="source-line-no">332</span><span id="line-332"> }</span> |
| <span class="source-line-no">333</span><span id="line-333"></span> |
| <span class="source-line-no">334</span><span id="line-334">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
