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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.util;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.InterruptedIOException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.ArrayList;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Collection;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.List;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.Callable;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.CompletionService;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.concurrent.ExecutionException;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.concurrent.ExecutorCompletionService;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.concurrent.ThreadPoolExecutor;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.RegionInfoBuilder;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.TableDescriptor;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.regionserver.HRegion;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.slf4j.Logger;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44">/**</span> |
| <span class="source-line-no">045</span><span id="line-45"> * Utility methods for interacting with the regions.</span> |
| <span class="source-line-no">046</span><span id="line-46"> */</span> |
| <span class="source-line-no">047</span><span id="line-47">@InterfaceAudience.Private</span> |
| <span class="source-line-no">048</span><span id="line-48">public abstract class ModifyRegionUtils {</span> |
| <span class="source-line-no">049</span><span id="line-49"> private static final Logger LOG = LoggerFactory.getLogger(ModifyRegionUtils.class);</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> private ModifyRegionUtils() {</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</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 interface RegionFillTask {</span> |
| <span class="source-line-no">055</span><span id="line-55"> void fillRegion(final HRegion region) throws IOException;</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"> public interface RegionEditTask {</span> |
| <span class="source-line-no">059</span><span id="line-59"> void editRegion(final RegionInfo region) throws IOException;</span> |
| <span class="source-line-no">060</span><span id="line-60"> }</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> public static RegionInfo[] createRegionInfos(TableDescriptor tableDescriptor,</span> |
| <span class="source-line-no">063</span><span id="line-63"> byte[][] splitKeys) {</span> |
| <span class="source-line-no">064</span><span id="line-64"> long regionId = EnvironmentEdgeManager.currentTime();</span> |
| <span class="source-line-no">065</span><span id="line-65"> RegionInfo[] hRegionInfos = null;</span> |
| <span class="source-line-no">066</span><span id="line-66"> if (splitKeys == null || splitKeys.length == 0) {</span> |
| <span class="source-line-no">067</span><span id="line-67"> hRegionInfos = new RegionInfo[] { RegionInfoBuilder.newBuilder(tableDescriptor.getTableName())</span> |
| <span class="source-line-no">068</span><span id="line-68"> .setStartKey(null).setEndKey(null).setSplit(false).setRegionId(regionId).build() };</span> |
| <span class="source-line-no">069</span><span id="line-69"> } else {</span> |
| <span class="source-line-no">070</span><span id="line-70"> int numRegions = splitKeys.length + 1;</span> |
| <span class="source-line-no">071</span><span id="line-71"> hRegionInfos = new RegionInfo[numRegions];</span> |
| <span class="source-line-no">072</span><span id="line-72"> byte[] startKey = null;</span> |
| <span class="source-line-no">073</span><span id="line-73"> byte[] endKey = null;</span> |
| <span class="source-line-no">074</span><span id="line-74"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">075</span><span id="line-75"> endKey = (i == splitKeys.length) ? null : splitKeys[i];</span> |
| <span class="source-line-no">076</span><span id="line-76"> hRegionInfos[i] = RegionInfoBuilder.newBuilder(tableDescriptor.getTableName())</span> |
| <span class="source-line-no">077</span><span id="line-77"> .setStartKey(startKey).setEndKey(endKey).setSplit(false).setRegionId(regionId).build();</span> |
| <span class="source-line-no">078</span><span id="line-78"> startKey = endKey;</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"> return hRegionInfos;</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84"> /**</span> |
| <span class="source-line-no">085</span><span id="line-85"> * Create new set of regions on the specified file-system. NOTE: that you should add the regions</span> |
| <span class="source-line-no">086</span><span id="line-86"> * to hbase:meta after this operation.</span> |
| <span class="source-line-no">087</span><span id="line-87"> * @param conf {@link Configuration}</span> |
| <span class="source-line-no">088</span><span id="line-88"> * @param rootDir Root directory for HBase instance</span> |
| <span class="source-line-no">089</span><span id="line-89"> * @param tableDescriptor description of the table</span> |
| <span class="source-line-no">090</span><span id="line-90"> * @param newRegions {@link RegionInfo} that describes the regions to create</span> |
| <span class="source-line-no">091</span><span id="line-91"> * @param task {@link RegionFillTask} custom code to populate region after creation</span> |
| <span class="source-line-no">092</span><span id="line-92"> */</span> |
| <span class="source-line-no">093</span><span id="line-93"> public static List<RegionInfo> createRegions(final Configuration conf, final Path rootDir,</span> |
| <span class="source-line-no">094</span><span id="line-94"> final TableDescriptor tableDescriptor, final RegionInfo[] newRegions, final RegionFillTask task)</span> |
| <span class="source-line-no">095</span><span id="line-95"> throws IOException {</span> |
| <span class="source-line-no">096</span><span id="line-96"> if (newRegions == null) return null;</span> |
| <span class="source-line-no">097</span><span id="line-97"> int regionNumber = newRegions.length;</span> |
| <span class="source-line-no">098</span><span id="line-98"> ThreadPoolExecutor exec = getRegionOpenAndInitThreadPool(conf,</span> |
| <span class="source-line-no">099</span><span id="line-99"> "RegionOpenAndInit-" + tableDescriptor.getTableName(), regionNumber);</span> |
| <span class="source-line-no">100</span><span id="line-100"> try {</span> |
| <span class="source-line-no">101</span><span id="line-101"> return createRegions(exec, conf, rootDir, tableDescriptor, newRegions, task);</span> |
| <span class="source-line-no">102</span><span id="line-102"> } finally {</span> |
| <span class="source-line-no">103</span><span id="line-103"> exec.shutdownNow();</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> }</span> |
| <span class="source-line-no">106</span><span id="line-106"></span> |
| <span class="source-line-no">107</span><span id="line-107"> /**</span> |
| <span class="source-line-no">108</span><span id="line-108"> * Create new set of regions on the specified file-system. NOTE: that you should add the regions</span> |
| <span class="source-line-no">109</span><span id="line-109"> * to hbase:meta after this operation.</span> |
| <span class="source-line-no">110</span><span id="line-110"> * @param exec Thread Pool Executor</span> |
| <span class="source-line-no">111</span><span id="line-111"> * @param conf {@link Configuration}</span> |
| <span class="source-line-no">112</span><span id="line-112"> * @param rootDir Root directory for HBase instance</span> |
| <span class="source-line-no">113</span><span id="line-113"> * @param tableDescriptor description of the table</span> |
| <span class="source-line-no">114</span><span id="line-114"> * @param newRegions {@link RegionInfo} that describes the regions to create</span> |
| <span class="source-line-no">115</span><span id="line-115"> * @param task {@link RegionFillTask} custom code to populate region after creation</span> |
| <span class="source-line-no">116</span><span id="line-116"> */</span> |
| <span class="source-line-no">117</span><span id="line-117"> public static List<RegionInfo> createRegions(final ThreadPoolExecutor exec,</span> |
| <span class="source-line-no">118</span><span id="line-118"> final Configuration conf, final Path rootDir, final TableDescriptor tableDescriptor,</span> |
| <span class="source-line-no">119</span><span id="line-119"> final RegionInfo[] newRegions, final RegionFillTask task) throws IOException {</span> |
| <span class="source-line-no">120</span><span id="line-120"> if (newRegions == null) return null;</span> |
| <span class="source-line-no">121</span><span id="line-121"> int regionNumber = newRegions.length;</span> |
| <span class="source-line-no">122</span><span id="line-122"> CompletionService<RegionInfo> completionService = new ExecutorCompletionService<>(exec);</span> |
| <span class="source-line-no">123</span><span id="line-123"> List<RegionInfo> regionInfos = new ArrayList<>();</span> |
| <span class="source-line-no">124</span><span id="line-124"> for (final RegionInfo newRegion : newRegions) {</span> |
| <span class="source-line-no">125</span><span id="line-125"> completionService.submit(new Callable<RegionInfo>() {</span> |
| <span class="source-line-no">126</span><span id="line-126"> @Override</span> |
| <span class="source-line-no">127</span><span id="line-127"> public RegionInfo call() throws IOException {</span> |
| <span class="source-line-no">128</span><span id="line-128"> return createRegion(conf, rootDir, tableDescriptor, newRegion, task);</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"> });</span> |
| <span class="source-line-no">131</span><span id="line-131"> }</span> |
| <span class="source-line-no">132</span><span id="line-132"> try {</span> |
| <span class="source-line-no">133</span><span id="line-133"> // wait for all regions to finish creation</span> |
| <span class="source-line-no">134</span><span id="line-134"> for (int i = 0; i < regionNumber; i++) {</span> |
| <span class="source-line-no">135</span><span id="line-135"> regionInfos.add(completionService.take().get());</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">138</span><span id="line-138"> LOG.error("Caught " + e + " during region creation");</span> |
| <span class="source-line-no">139</span><span id="line-139"> throw new InterruptedIOException(e.getMessage());</span> |
| <span class="source-line-no">140</span><span id="line-140"> } catch (ExecutionException e) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> throw new IOException(e);</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143"> return regionInfos;</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> /**</span> |
| <span class="source-line-no">147</span><span id="line-147"> * Create new set of regions on the specified file-system.</span> |
| <span class="source-line-no">148</span><span id="line-148"> * @param conf {@link Configuration}</span> |
| <span class="source-line-no">149</span><span id="line-149"> * @param rootDir Root directory for HBase instance</span> |
| <span class="source-line-no">150</span><span id="line-150"> * @param tableDescriptor description of the table</span> |
| <span class="source-line-no">151</span><span id="line-151"> * @param newRegion {@link RegionInfo} that describes the region to create</span> |
| <span class="source-line-no">152</span><span id="line-152"> * @param task {@link RegionFillTask} custom code to populate region after creation</span> |
| <span class="source-line-no">153</span><span id="line-153"> */</span> |
| <span class="source-line-no">154</span><span id="line-154"> public static RegionInfo createRegion(final Configuration conf, final Path rootDir,</span> |
| <span class="source-line-no">155</span><span id="line-155"> final TableDescriptor tableDescriptor, final RegionInfo newRegion, final RegionFillTask task)</span> |
| <span class="source-line-no">156</span><span id="line-156"> throws IOException {</span> |
| <span class="source-line-no">157</span><span id="line-157"> // 1. Create HRegion</span> |
| <span class="source-line-no">158</span><span id="line-158"> // The WAL subsystem will use the default rootDir rather than the passed in rootDir</span> |
| <span class="source-line-no">159</span><span id="line-159"> // unless I pass along via the conf.</span> |
| <span class="source-line-no">160</span><span id="line-160"> Configuration confForWAL = new Configuration(conf);</span> |
| <span class="source-line-no">161</span><span id="line-161"> confForWAL.set(HConstants.HBASE_DIR, rootDir.toString());</span> |
| <span class="source-line-no">162</span><span id="line-162"> HRegion region = HRegion.createHRegion(newRegion, rootDir, conf, tableDescriptor, null, false);</span> |
| <span class="source-line-no">163</span><span id="line-163"> try {</span> |
| <span class="source-line-no">164</span><span id="line-164"> // 2. Custom user code to interact with the created region</span> |
| <span class="source-line-no">165</span><span id="line-165"> if (task != null) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> task.fillRegion(region);</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"> } finally {</span> |
| <span class="source-line-no">169</span><span id="line-169"> // 3. Close the new region to flush to disk. Close log file too.</span> |
| <span class="source-line-no">170</span><span id="line-170"> region.close(false, true);</span> |
| <span class="source-line-no">171</span><span id="line-171"> }</span> |
| <span class="source-line-no">172</span><span id="line-172"> return region.getRegionInfo();</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> /**</span> |
| <span class="source-line-no">176</span><span id="line-176"> * Execute the task on the specified set of regions.</span> |
| <span class="source-line-no">177</span><span id="line-177"> * @param exec Thread Pool Executor</span> |
| <span class="source-line-no">178</span><span id="line-178"> * @param regions {@link RegionInfo} that describes the regions to edit</span> |
| <span class="source-line-no">179</span><span id="line-179"> * @param task {@link RegionFillTask} custom code to edit the region</span> |
| <span class="source-line-no">180</span><span id="line-180"> */</span> |
| <span class="source-line-no">181</span><span id="line-181"> public static void editRegions(final ThreadPoolExecutor exec,</span> |
| <span class="source-line-no">182</span><span id="line-182"> final Collection<RegionInfo> regions, final RegionEditTask task) throws IOException {</span> |
| <span class="source-line-no">183</span><span id="line-183"> final ExecutorCompletionService<Void> completionService = new ExecutorCompletionService<>(exec);</span> |
| <span class="source-line-no">184</span><span id="line-184"> for (final RegionInfo hri : regions) {</span> |
| <span class="source-line-no">185</span><span id="line-185"> completionService.submit(new Callable<Void>() {</span> |
| <span class="source-line-no">186</span><span id="line-186"> @Override</span> |
| <span class="source-line-no">187</span><span id="line-187"> public Void call() throws IOException {</span> |
| <span class="source-line-no">188</span><span id="line-188"> task.editRegion(hri);</span> |
| <span class="source-line-no">189</span><span id="line-189"> return null;</span> |
| <span class="source-line-no">190</span><span id="line-190"> }</span> |
| <span class="source-line-no">191</span><span id="line-191"> });</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"> try {</span> |
| <span class="source-line-no">195</span><span id="line-195"> for (RegionInfo hri : regions) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> completionService.take().get();</span> |
| <span class="source-line-no">197</span><span id="line-197"> }</span> |
| <span class="source-line-no">198</span><span id="line-198"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">199</span><span id="line-199"> throw new InterruptedIOException(e.getMessage());</span> |
| <span class="source-line-no">200</span><span id="line-200"> } catch (ExecutionException e) {</span> |
| <span class="source-line-no">201</span><span id="line-201"> throw new IOException(e.getCause());</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"> }</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"> * used by createRegions() to get the thread pool executor based on the</span> |
| <span class="source-line-no">207</span><span id="line-207"> * "hbase.hregion.open.and.init.threads.max" property.</span> |
| <span class="source-line-no">208</span><span id="line-208"> */</span> |
| <span class="source-line-no">209</span><span id="line-209"> static ThreadPoolExecutor getRegionOpenAndInitThreadPool(final Configuration conf,</span> |
| <span class="source-line-no">210</span><span id="line-210"> final String threadNamePrefix, int regionNumber) {</span> |
| <span class="source-line-no">211</span><span id="line-211"> int maxThreads =</span> |
| <span class="source-line-no">212</span><span id="line-212"> Math.min(regionNumber, conf.getInt("hbase.hregion.open.and.init.threads.max", 16));</span> |
| <span class="source-line-no">213</span><span id="line-213"> ThreadPoolExecutor regionOpenAndInitThreadPool = Threads.getBoundedCachedThreadPool(maxThreads,</span> |
| <span class="source-line-no">214</span><span id="line-214"> 30L, TimeUnit.SECONDS, new ThreadFactoryBuilder().setNameFormat(threadNamePrefix + "-pool-%d")</span> |
| <span class="source-line-no">215</span><span id="line-215"> .setDaemon(true).setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());</span> |
| <span class="source-line-no">216</span><span id="line-216"> return regionOpenAndInitThreadPool;</span> |
| <span class="source-line-no">217</span><span id="line-217"> }</span> |
| <span class="source-line-no">218</span><span id="line-218">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |