| <!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.master.assignment, class: AssignmentManagerUtil"> |
| <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.master.assignment;</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.HConstants.DEFAULT_HBASE_ENABLE_SEPARATE_CHILD_REGIONS;</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.ArrayList;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.Collections;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.List;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.ListIterator;</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 java.util.stream.IntStream;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.stream.Stream;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.commons.lang3.ArrayUtils;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseIOException;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.AsyncRegionServerAdmin;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.RegionReplicaUtil;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.favored.FavoredNodesManager;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.util.FutureUtils;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.wal.WALSplitUtil;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoRequest;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47">/**</span> |
| <span class="source-line-no">048</span><span id="line-48"> * Utility for this assignment package only.</span> |
| <span class="source-line-no">049</span><span id="line-49"> */</span> |
| <span class="source-line-no">050</span><span id="line-50">@InterfaceAudience.Private</span> |
| <span class="source-line-no">051</span><span id="line-51">final class AssignmentManagerUtil {</span> |
| <span class="source-line-no">052</span><span id="line-52"> private static final int DEFAULT_REGION_REPLICA = 1;</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> private AssignmentManagerUtil() {</span> |
| <span class="source-line-no">055</span><span id="line-55"> }</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"> * Raw call to remote regionserver to get info on a particular region.</span> |
| <span class="source-line-no">059</span><span id="line-59"> * @throws IOException Let it out so can report this IOE as reason for failure</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61"> static GetRegionInfoResponse getRegionInfoResponse(final MasterProcedureEnv env,</span> |
| <span class="source-line-no">062</span><span id="line-62"> final ServerName regionLocation, final RegionInfo hri) throws IOException {</span> |
| <span class="source-line-no">063</span><span id="line-63"> return getRegionInfoResponse(env, regionLocation, hri, false);</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> static GetRegionInfoResponse getRegionInfoResponse(final MasterProcedureEnv env,</span> |
| <span class="source-line-no">067</span><span id="line-67"> final ServerName regionLocation, final RegionInfo hri, boolean includeBestSplitRow)</span> |
| <span class="source-line-no">068</span><span id="line-68"> throws IOException {</span> |
| <span class="source-line-no">069</span><span id="line-69"> AsyncRegionServerAdmin admin =</span> |
| <span class="source-line-no">070</span><span id="line-70"> env.getMasterServices().getAsyncClusterConnection().getRegionServerAdmin(regionLocation);</span> |
| <span class="source-line-no">071</span><span id="line-71"> GetRegionInfoRequest request = null;</span> |
| <span class="source-line-no">072</span><span id="line-72"> if (includeBestSplitRow) {</span> |
| <span class="source-line-no">073</span><span id="line-73"> request = RequestConverter.buildGetRegionInfoRequest(hri.getRegionName(), false, true);</span> |
| <span class="source-line-no">074</span><span id="line-74"> } else {</span> |
| <span class="source-line-no">075</span><span id="line-75"> request = RequestConverter.buildGetRegionInfoRequest(hri.getRegionName());</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"> return FutureUtils.get(admin.getRegionInfo(request));</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> private static void lock(List<RegionStateNode> regionNodes) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> regionNodes.iterator().forEachRemaining(RegionStateNode::lock);</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"> private static void unlock(List<RegionStateNode> regionNodes) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> for (ListIterator<RegionStateNode> iter = regionNodes.listIterator(regionNodes.size()); iter</span> |
| <span class="source-line-no">086</span><span id="line-86"> .hasPrevious();) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> iter.previous().unlock();</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> static TransitRegionStateProcedure[] createUnassignProceduresForSplitOrMerge(</span> |
| <span class="source-line-no">092</span><span id="line-92"> MasterProcedureEnv env, Stream<RegionInfo> regions, int regionReplication) throws IOException {</span> |
| <span class="source-line-no">093</span><span id="line-93"> List<RegionStateNode> regionNodes = regions</span> |
| <span class="source-line-no">094</span><span id="line-94"> .flatMap(hri -> IntStream.range(0, regionReplication)</span> |
| <span class="source-line-no">095</span><span id="line-95"> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i)))</span> |
| <span class="source-line-no">096</span><span id="line-96"> .map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)</span> |
| <span class="source-line-no">097</span><span id="line-97"> .collect(Collectors.toList());</span> |
| <span class="source-line-no">098</span><span id="line-98"> TransitRegionStateProcedure[] procs = new TransitRegionStateProcedure[regionNodes.size()];</span> |
| <span class="source-line-no">099</span><span id="line-99"> boolean rollback = true;</span> |
| <span class="source-line-no">100</span><span id="line-100"> int i = 0;</span> |
| <span class="source-line-no">101</span><span id="line-101"> // hold the lock at once, and then release it in finally. This is important as SCP may jump in</span> |
| <span class="source-line-no">102</span><span id="line-102"> // if we release the lock in the middle when we want to do rollback, and cause problems.</span> |
| <span class="source-line-no">103</span><span id="line-103"> lock(regionNodes);</span> |
| <span class="source-line-no">104</span><span id="line-104"> try {</span> |
| <span class="source-line-no">105</span><span id="line-105"> for (; i < procs.length; i++) {</span> |
| <span class="source-line-no">106</span><span id="line-106"> RegionStateNode regionNode = regionNodes.get(i);</span> |
| <span class="source-line-no">107</span><span id="line-107"> TransitRegionStateProcedure proc =</span> |
| <span class="source-line-no">108</span><span id="line-108"> TransitRegionStateProcedure.unassignSplitMerge(env, regionNode.getRegionInfo());</span> |
| <span class="source-line-no">109</span><span id="line-109"> if (regionNode.getProcedure() != null) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> throw new HBaseIOException(</span> |
| <span class="source-line-no">111</span><span id="line-111"> "The parent region " + regionNode + " is currently in transition, give up");</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"> regionNode.setProcedure(proc);</span> |
| <span class="source-line-no">114</span><span id="line-114"> procs[i] = proc;</span> |
| <span class="source-line-no">115</span><span id="line-115"> }</span> |
| <span class="source-line-no">116</span><span id="line-116"> // all succeeded, set rollback to false</span> |
| <span class="source-line-no">117</span><span id="line-117"> rollback = false;</span> |
| <span class="source-line-no">118</span><span id="line-118"> } finally {</span> |
| <span class="source-line-no">119</span><span id="line-119"> if (rollback) {</span> |
| <span class="source-line-no">120</span><span id="line-120"> for (;;) {</span> |
| <span class="source-line-no">121</span><span id="line-121"> i--;</span> |
| <span class="source-line-no">122</span><span id="line-122"> if (i < 0) {</span> |
| <span class="source-line-no">123</span><span id="line-123"> break;</span> |
| <span class="source-line-no">124</span><span id="line-124"> }</span> |
| <span class="source-line-no">125</span><span id="line-125"> RegionStateNode regionNode = regionNodes.get(i);</span> |
| <span class="source-line-no">126</span><span id="line-126"> regionNode.unsetProcedure(procs[i]);</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"> unlock(regionNodes);</span> |
| <span class="source-line-no">130</span><span id="line-130"> }</span> |
| <span class="source-line-no">131</span><span id="line-131"> return procs;</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> /**</span> |
| <span class="source-line-no">135</span><span id="line-135"> * Create assign procedures for the give regions, according to the {@code regionReplication}.</span> |
| <span class="source-line-no">136</span><span id="line-136"> * <p/></span> |
| <span class="source-line-no">137</span><span id="line-137"> * For rolling back, we will submit procedures directly to the {@code ProcedureExecutor}, so it is</span> |
| <span class="source-line-no">138</span><span id="line-138"> * possible that we persist the newly scheduled procedures, and then crash before persisting the</span> |
| <span class="source-line-no">139</span><span id="line-139"> * rollback state, so when we arrive here the second time, it is possible that some regions have</span> |
| <span class="source-line-no">140</span><span id="line-140"> * already been associated with a TRSP.</span> |
| <span class="source-line-no">141</span><span id="line-141"> * @param ignoreIfInTransition if true, will skip creating TRSP for the given region if it is</span> |
| <span class="source-line-no">142</span><span id="line-142"> * already in transition, otherwise we will add an assert that it</span> |
| <span class="source-line-no">143</span><span id="line-143"> * should not in transition.</span> |
| <span class="source-line-no">144</span><span id="line-144"> */</span> |
| <span class="source-line-no">145</span><span id="line-145"> private static TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env,</span> |
| <span class="source-line-no">146</span><span id="line-146"> List<RegionInfo> regions, int regionReplication, ServerName targetServer,</span> |
| <span class="source-line-no">147</span><span id="line-147"> boolean ignoreIfInTransition) {</span> |
| <span class="source-line-no">148</span><span id="line-148"> // create the assign procs only for the primary region using the targetServer</span> |
| <span class="source-line-no">149</span><span id="line-149"> TransitRegionStateProcedure[] primaryRegionProcs =</span> |
| <span class="source-line-no">150</span><span id="line-150"> regions.stream().map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)</span> |
| <span class="source-line-no">151</span><span id="line-151"> .map(regionNode -> {</span> |
| <span class="source-line-no">152</span><span id="line-152"> TransitRegionStateProcedure proc =</span> |
| <span class="source-line-no">153</span><span id="line-153"> TransitRegionStateProcedure.assign(env, regionNode.getRegionInfo(), targetServer);</span> |
| <span class="source-line-no">154</span><span id="line-154"> regionNode.lock();</span> |
| <span class="source-line-no">155</span><span id="line-155"> try {</span> |
| <span class="source-line-no">156</span><span id="line-156"> if (ignoreIfInTransition) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> if (regionNode.isInTransition()) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> return null;</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</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"> // should never fail, as we have the exclusive region lock, and the region is newly</span> |
| <span class="source-line-no">162</span><span id="line-162"> // created, or has been successfully closed so should not be on any servers, so SCP</span> |
| <span class="source-line-no">163</span><span id="line-163"> // will</span> |
| <span class="source-line-no">164</span><span id="line-164"> // not process it either.</span> |
| <span class="source-line-no">165</span><span id="line-165"> assert !regionNode.isInTransition();</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</span> |
| <span class="source-line-no">167</span><span id="line-167"> regionNode.setProcedure(proc);</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"> regionNode.unlock();</span> |
| <span class="source-line-no">170</span><span id="line-170"> }</span> |
| <span class="source-line-no">171</span><span id="line-171"> return proc;</span> |
| <span class="source-line-no">172</span><span id="line-172"> }).filter(p -> p != null).toArray(TransitRegionStateProcedure[]::new);</span> |
| <span class="source-line-no">173</span><span id="line-173"> if (regionReplication == DEFAULT_REGION_REPLICA) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> // this is the default case</span> |
| <span class="source-line-no">175</span><span id="line-175"> return primaryRegionProcs;</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> // collect the replica region infos</span> |
| <span class="source-line-no">178</span><span id="line-178"> List<RegionInfo> replicaRegionInfos =</span> |
| <span class="source-line-no">179</span><span id="line-179"> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));</span> |
| <span class="source-line-no">180</span><span id="line-180"> for (RegionInfo hri : regions) {</span> |
| <span class="source-line-no">181</span><span id="line-181"> // start the index from 1</span> |
| <span class="source-line-no">182</span><span id="line-182"> for (int i = 1; i < regionReplication; i++) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> RegionInfo ri = RegionReplicaUtil.getRegionInfoForReplica(hri, i);</span> |
| <span class="source-line-no">184</span><span id="line-184"> // apply ignoreRITs to replica regions as well.</span> |
| <span class="source-line-no">185</span><span id="line-185"> if (</span> |
| <span class="source-line-no">186</span><span id="line-186"> !ignoreIfInTransition || !env.getAssignmentManager().getRegionStates()</span> |
| <span class="source-line-no">187</span><span id="line-187"> .getOrCreateRegionStateNode(ri).isInTransition()</span> |
| <span class="source-line-no">188</span><span id="line-188"> ) {</span> |
| <span class="source-line-no">189</span><span id="line-189"> replicaRegionInfos.add(ri);</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"> // create round robin procs. Note that we exclude the primary region's target server</span> |
| <span class="source-line-no">195</span><span id="line-195"> TransitRegionStateProcedure[] replicaRegionAssignProcs =</span> |
| <span class="source-line-no">196</span><span id="line-196"> env.getAssignmentManager().createRoundRobinAssignProcedures(replicaRegionInfos,</span> |
| <span class="source-line-no">197</span><span id="line-197"> Collections.singletonList(targetServer));</span> |
| <span class="source-line-no">198</span><span id="line-198"> // combine both the procs and return the result</span> |
| <span class="source-line-no">199</span><span id="line-199"> return ArrayUtils.addAll(primaryRegionProcs, replicaRegionAssignProcs);</span> |
| <span class="source-line-no">200</span><span id="line-200"> }</span> |
| <span class="source-line-no">201</span><span id="line-201"></span> |
| <span class="source-line-no">202</span><span id="line-202"> /**</span> |
| <span class="source-line-no">203</span><span id="line-203"> * Create round robin assign procedures for the given regions, according to the</span> |
| <span class="source-line-no">204</span><span id="line-204"> * {@code regionReplication}.</span> |
| <span class="source-line-no">205</span><span id="line-205"> * <p/></span> |
| <span class="source-line-no">206</span><span id="line-206"> * For rolling back, we will submit procedures directly to the {@code ProcedureExecutor}, so it is</span> |
| <span class="source-line-no">207</span><span id="line-207"> * possible that we persist the newly scheduled procedures, and then crash before persisting the</span> |
| <span class="source-line-no">208</span><span id="line-208"> * rollback state, so when we arrive here the second time, it is possible that some regions have</span> |
| <span class="source-line-no">209</span><span id="line-209"> * already been associated with a TRSP.</span> |
| <span class="source-line-no">210</span><span id="line-210"> * @param ignoreIfInTransition if true, will skip creating TRSP for the given region if it is</span> |
| <span class="source-line-no">211</span><span id="line-211"> * already in transition, otherwise we will add an assert that it</span> |
| <span class="source-line-no">212</span><span id="line-212"> * should not in transition.</span> |
| <span class="source-line-no">213</span><span id="line-213"> */</span> |
| <span class="source-line-no">214</span><span id="line-214"> private static TransitRegionStateProcedure[] createRoundRobinAssignProcedures(</span> |
| <span class="source-line-no">215</span><span id="line-215"> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,</span> |
| <span class="source-line-no">216</span><span id="line-216"> List<ServerName> serversToExclude, boolean ignoreIfInTransition) {</span> |
| <span class="source-line-no">217</span><span id="line-217"> List<RegionInfo> regionsAndReplicas = new ArrayList<>(regions);</span> |
| <span class="source-line-no">218</span><span id="line-218"> if (regionReplication != DEFAULT_REGION_REPLICA) {</span> |
| <span class="source-line-no">219</span><span id="line-219"></span> |
| <span class="source-line-no">220</span><span id="line-220"> // collect the replica region infos</span> |
| <span class="source-line-no">221</span><span id="line-221"> List<RegionInfo> replicaRegionInfos =</span> |
| <span class="source-line-no">222</span><span id="line-222"> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));</span> |
| <span class="source-line-no">223</span><span id="line-223"> for (RegionInfo hri : regions) {</span> |
| <span class="source-line-no">224</span><span id="line-224"> // start the index from 1</span> |
| <span class="source-line-no">225</span><span id="line-225"> for (int i = 1; i < regionReplication; i++) {</span> |
| <span class="source-line-no">226</span><span id="line-226"> replicaRegionInfos.add(RegionReplicaUtil.getRegionInfoForReplica(hri, i));</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228"> }</span> |
| <span class="source-line-no">229</span><span id="line-229"> regionsAndReplicas.addAll(replicaRegionInfos);</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> if (ignoreIfInTransition) {</span> |
| <span class="source-line-no">232</span><span id="line-232"> for (RegionInfo region : regionsAndReplicas) {</span> |
| <span class="source-line-no">233</span><span id="line-233"> if (</span> |
| <span class="source-line-no">234</span><span id="line-234"> env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(region)</span> |
| <span class="source-line-no">235</span><span id="line-235"> .isInTransition()</span> |
| <span class="source-line-no">236</span><span id="line-236"> ) {</span> |
| <span class="source-line-no">237</span><span id="line-237"> return null;</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"> }</span> |
| <span class="source-line-no">241</span><span id="line-241"> // create round robin procs. Note that we exclude the primary region's target server</span> |
| <span class="source-line-no">242</span><span id="line-242"> return env.getAssignmentManager().createRoundRobinAssignProcedures(regionsAndReplicas,</span> |
| <span class="source-line-no">243</span><span id="line-243"> serversToExclude);</span> |
| <span class="source-line-no">244</span><span id="line-244"> }</span> |
| <span class="source-line-no">245</span><span id="line-245"></span> |
| <span class="source-line-no">246</span><span id="line-246"> static TransitRegionStateProcedure[] createAssignProceduresForSplitDaughters(</span> |
| <span class="source-line-no">247</span><span id="line-247"> MasterProcedureEnv env, List<RegionInfo> daughters, int regionReplication,</span> |
| <span class="source-line-no">248</span><span id="line-248"> ServerName parentServer) {</span> |
| <span class="source-line-no">249</span><span id="line-249"> if (</span> |
| <span class="source-line-no">250</span><span id="line-250"> env.getMasterConfiguration().getBoolean(HConstants.HBASE_ENABLE_SEPARATE_CHILD_REGIONS,</span> |
| <span class="source-line-no">251</span><span id="line-251"> DEFAULT_HBASE_ENABLE_SEPARATE_CHILD_REGIONS)</span> |
| <span class="source-line-no">252</span><span id="line-252"> ) {</span> |
| <span class="source-line-no">253</span><span id="line-253"> // keep one daughter on the parent region server</span> |
| <span class="source-line-no">254</span><span id="line-254"> TransitRegionStateProcedure[] daughterOne = createAssignProcedures(env,</span> |
| <span class="source-line-no">255</span><span id="line-255"> Collections.singletonList(daughters.get(0)), regionReplication, parentServer, false);</span> |
| <span class="source-line-no">256</span><span id="line-256"> // round robin assign the other daughter</span> |
| <span class="source-line-no">257</span><span id="line-257"> TransitRegionStateProcedure[] daughterTwo =</span> |
| <span class="source-line-no">258</span><span id="line-258"> createRoundRobinAssignProcedures(env, Collections.singletonList(daughters.get(1)),</span> |
| <span class="source-line-no">259</span><span id="line-259"> regionReplication, Collections.singletonList(parentServer), false);</span> |
| <span class="source-line-no">260</span><span id="line-260"> return ArrayUtils.addAll(daughterOne, daughterTwo);</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</span> |
| <span class="source-line-no">262</span><span id="line-262"> return createAssignProceduresForOpeningNewRegions(env, daughters, regionReplication,</span> |
| <span class="source-line-no">263</span><span id="line-263"> parentServer);</span> |
| <span class="source-line-no">264</span><span id="line-264"> }</span> |
| <span class="source-line-no">265</span><span id="line-265"></span> |
| <span class="source-line-no">266</span><span id="line-266"> static TransitRegionStateProcedure[] createAssignProceduresForOpeningNewRegions(</span> |
| <span class="source-line-no">267</span><span id="line-267"> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,</span> |
| <span class="source-line-no">268</span><span id="line-268"> ServerName targetServer) {</span> |
| <span class="source-line-no">269</span><span id="line-269"> return createAssignProcedures(env, regions, regionReplication, targetServer, false);</span> |
| <span class="source-line-no">270</span><span id="line-270"> }</span> |
| <span class="source-line-no">271</span><span id="line-271"></span> |
| <span class="source-line-no">272</span><span id="line-272"> static void reopenRegionsForRollback(MasterProcedureEnv env, List<RegionInfo> regions,</span> |
| <span class="source-line-no">273</span><span id="line-273"> int regionReplication, ServerName targetServer) {</span> |
| <span class="source-line-no">274</span><span id="line-274"> TransitRegionStateProcedure[] procs =</span> |
| <span class="source-line-no">275</span><span id="line-275"> createAssignProcedures(env, regions, regionReplication, targetServer, true);</span> |
| <span class="source-line-no">276</span><span id="line-276"> if (procs.length > 0) {</span> |
| <span class="source-line-no">277</span><span id="line-277"> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);</span> |
| <span class="source-line-no">278</span><span id="line-278"> }</span> |
| <span class="source-line-no">279</span><span id="line-279"> }</span> |
| <span class="source-line-no">280</span><span id="line-280"></span> |
| <span class="source-line-no">281</span><span id="line-281"> static void removeNonDefaultReplicas(MasterProcedureEnv env, Stream<RegionInfo> regions,</span> |
| <span class="source-line-no">282</span><span id="line-282"> int regionReplication) {</span> |
| <span class="source-line-no">283</span><span id="line-283"> // Remove from in-memory states</span> |
| <span class="source-line-no">284</span><span id="line-284"> regions.flatMap(hri -> IntStream.range(1, regionReplication)</span> |
| <span class="source-line-no">285</span><span id="line-285"> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i))).forEach(hri -> {</span> |
| <span class="source-line-no">286</span><span id="line-286"> env.getAssignmentManager().getRegionStates().deleteRegion(hri);</span> |
| <span class="source-line-no">287</span><span id="line-287"> env.getMasterServices().getServerManager().removeRegion(hri);</span> |
| <span class="source-line-no">288</span><span id="line-288"> FavoredNodesManager fnm = env.getMasterServices().getFavoredNodesManager();</span> |
| <span class="source-line-no">289</span><span id="line-289"> if (fnm != null) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> fnm.deleteFavoredNodesForRegions(Collections.singletonList(hri));</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</span> |
| <span class="source-line-no">292</span><span id="line-292"> });</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"> static void checkClosedRegion(MasterProcedureEnv env, RegionInfo regionInfo) throws IOException {</span> |
| <span class="source-line-no">296</span><span id="line-296"> if (WALSplitUtil.hasRecoveredEdits(env.getMasterConfiguration(), regionInfo)) {</span> |
| <span class="source-line-no">297</span><span id="line-297"> throw new IOException("Recovered.edits are found in Region: " + regionInfo</span> |
| <span class="source-line-no">298</span><span id="line-298"> + ", abort split/merge to prevent data loss");</span> |
| <span class="source-line-no">299</span><span id="line-299"> }</span> |
| <span class="source-line-no">300</span><span id="line-300"> }</span> |
| <span class="source-line-no">301</span><span id="line-301">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
