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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master.assignment;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.DEFAULT_HBASE_ENABLE_SEPARATE_CHILD_REGIONS;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Collections;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.ListIterator;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.stream.Collectors;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.stream.IntStream;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.stream.Stream;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.commons.lang3.ArrayUtils;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HConstants;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ServerName;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.AsyncRegionServerAdmin;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.FutureUtils;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.wal.WALSplitUtil;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoRequest;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span>/**<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Utility for this assignment package only.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>@InterfaceAudience.Private<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>final class AssignmentManagerUtil {<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private static final int DEFAULT_REGION_REPLICA = 1;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private AssignmentManagerUtil() {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> }<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> /**<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * Raw call to remote regionserver to get info on a particular region.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * @throws IOException Let it out so can report this IOE as reason for failure<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> static GetRegionInfoResponse getRegionInfoResponse(final MasterProcedureEnv env,<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> final ServerName regionLocation, final RegionInfo hri) throws IOException {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> return getRegionInfoResponse(env, regionLocation, hri, false);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> static GetRegionInfoResponse getRegionInfoResponse(final MasterProcedureEnv env,<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> final ServerName regionLocation, final RegionInfo hri, boolean includeBestSplitRow)<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> throws IOException {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> AsyncRegionServerAdmin admin =<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> env.getMasterServices().getAsyncClusterConnection().getRegionServerAdmin(regionLocation);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> GetRegionInfoRequest request = null;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> if (includeBestSplitRow) {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> request = RequestConverter.buildGetRegionInfoRequest(hri.getRegionName(), false, true);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> } else {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> request = RequestConverter.buildGetRegionInfoRequest(hri.getRegionName());<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> }<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> return FutureUtils.get(admin.getRegionInfo(request));<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private static void lock(List<RegionStateNode> regionNodes) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> regionNodes.iterator().forEachRemaining(RegionStateNode::lock);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private static void unlock(List<RegionStateNode> regionNodes) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> for (ListIterator<RegionStateNode> iter = regionNodes.listIterator(regionNodes.size()); iter<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> .hasPrevious();) {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> iter.previous().unlock();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> static TransitRegionStateProcedure[] createUnassignProceduresForSplitOrMerge(<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> MasterProcedureEnv env, Stream<RegionInfo> regions, int regionReplication) throws IOException {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> List<RegionStateNode> regionNodes = regions<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> .flatMap(hri -> IntStream.range(0, regionReplication)<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i)))<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> .map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> .collect(Collectors.toList());<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> TransitRegionStateProcedure[] procs = new TransitRegionStateProcedure[regionNodes.size()];<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> boolean rollback = true;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> int i = 0;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> // hold the lock at once, and then release it in finally. This is important as SCP may jump in<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> // if we release the lock in the middle when we want to do rollback, and cause problems.<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> lock(regionNodes);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> try {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> for (; i < procs.length; i++) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> RegionStateNode regionNode = regionNodes.get(i);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> TransitRegionStateProcedure proc =<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> TransitRegionStateProcedure.unassignSplitMerge(env, regionNode.getRegionInfo());<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> if (regionNode.getProcedure() != null) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> throw new HBaseIOException(<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> "The parent region " + regionNode + " is currently in transition, give up");<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> regionNode.setProcedure(proc);<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> procs[i] = proc;<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> // all succeeded, set rollback to false<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> rollback = false;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> } finally {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> if (rollback) {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> for (;;) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> i--;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> if (i < 0) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> break;<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> RegionStateNode regionNode = regionNodes.get(i);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> regionNode.unsetProcedure(procs[i]);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> unlock(regionNodes);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> return procs;<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> /**<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * Create assign procedures for the give regions, according to the {@code regionReplication}.<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * <p/><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * For rolling back, we will submit procedures directly to the {@code ProcedureExecutor}, so it is<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * possible that we persist the newly scheduled procedures, and then crash before persisting the<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> * rollback state, so when we arrive here the second time, it is possible that some regions have<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> * already been associated with a TRSP.<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> * @param ignoreIfInTransition if true, will skip creating TRSP for the given region if it is<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> * already in transition, otherwise we will add an assert that it<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * should not in transition.<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> */<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> private static TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env,<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> List<RegionInfo> regions, int regionReplication, ServerName targetServer,<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> boolean ignoreIfInTransition) {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> // create the assign procs only for the primary region using the targetServer<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> TransitRegionStateProcedure[] primaryRegionProcs =<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> regions.stream().map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> .map(regionNode -> {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> TransitRegionStateProcedure proc =<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> TransitRegionStateProcedure.assign(env, regionNode.getRegionInfo(), targetServer);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> regionNode.lock();<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> try {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> if (ignoreIfInTransition) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if (regionNode.isInTransition()) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> return null;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> } else {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // should never fail, as we have the exclusive region lock, and the region is newly<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> // created, or has been successfully closed so should not be on any servers, so SCP<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> // will<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> // not process it either.<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> assert !regionNode.isInTransition();<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> regionNode.setProcedure(proc);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> } finally {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> regionNode.unlock();<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> return proc;<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> }).filter(p -> p != null).toArray(TransitRegionStateProcedure[]::new);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> if (regionReplication == DEFAULT_REGION_REPLICA) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // this is the default case<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> return primaryRegionProcs;<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> // collect the replica region infos<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> List<RegionInfo> replicaRegionInfos =<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> for (RegionInfo hri : regions) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // start the index from 1<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> for (int i = 1; i < regionReplication; i++) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> RegionInfo ri = RegionReplicaUtil.getRegionInfoForReplica(hri, i);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // apply ignoreRITs to replica regions as well.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> !ignoreIfInTransition || !env.getAssignmentManager().getRegionStates()<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> .getOrCreateRegionStateNode(ri).isInTransition()<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> ) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> replicaRegionInfos.add(ri);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> }<a name="line.192"></a> |
| <span class="sourceLineNo">193</span><a name="line.193"></a> |
| <span class="sourceLineNo">194</span> // create round robin procs. Note that we exclude the primary region's target server<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> TransitRegionStateProcedure[] replicaRegionAssignProcs =<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> env.getAssignmentManager().createRoundRobinAssignProcedures(replicaRegionInfos,<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> Collections.singletonList(targetServer));<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> // combine both the procs and return the result<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return ArrayUtils.addAll(primaryRegionProcs, replicaRegionAssignProcs);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> /**<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * Create round robin assign procedures for the given regions, according to the<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * {@code regionReplication}.<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * <p/><a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * For rolling back, we will submit procedures directly to the {@code ProcedureExecutor}, so it is<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * possible that we persist the newly scheduled procedures, and then crash before persisting the<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> * rollback state, so when we arrive here the second time, it is possible that some regions have<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> * already been associated with a TRSP.<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * @param ignoreIfInTransition if true, will skip creating TRSP for the given region if it is<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * already in transition, otherwise we will add an assert that it<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * should not in transition.<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> */<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> private static TransitRegionStateProcedure[] createRoundRobinAssignProcedures(<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> List<ServerName> serversToExclude, boolean ignoreIfInTransition) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> List<RegionInfo> regionsAndReplicas = new ArrayList<>(regions);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> if (regionReplication != DEFAULT_REGION_REPLICA) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> // collect the replica region infos<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> List<RegionInfo> replicaRegionInfos =<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> for (RegionInfo hri : regions) {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> // start the index from 1<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> for (int i = 1; i < regionReplication; i++) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> replicaRegionInfos.add(RegionReplicaUtil.getRegionInfoForReplica(hri, i));<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> regionsAndReplicas.addAll(replicaRegionInfos);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if (ignoreIfInTransition) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> for (RegionInfo region : regionsAndReplicas) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(region)<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> .isInTransition()<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> ) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return null;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> // create round robin procs. Note that we exclude the primary region's target server<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> return env.getAssignmentManager().createRoundRobinAssignProcedures(regionsAndReplicas,<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> serversToExclude);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> }<a name="line.244"></a> |
| <span class="sourceLineNo">245</span><a name="line.245"></a> |
| <span class="sourceLineNo">246</span> static TransitRegionStateProcedure[] createAssignProceduresForSplitDaughters(<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> MasterProcedureEnv env, List<RegionInfo> daughters, int regionReplication,<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> ServerName parentServer) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> if (<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> env.getMasterConfiguration().getBoolean(HConstants.HBASE_ENABLE_SEPARATE_CHILD_REGIONS,<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> DEFAULT_HBASE_ENABLE_SEPARATE_CHILD_REGIONS)<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> ) {<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> // keep one daughter on the parent region server<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> TransitRegionStateProcedure[] daughterOne = createAssignProcedures(env,<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> Collections.singletonList(daughters.get(0)), regionReplication, parentServer, false);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> // round robin assign the other daughter<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> TransitRegionStateProcedure[] daughterTwo =<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> createRoundRobinAssignProcedures(env, Collections.singletonList(daughters.get(1)),<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> regionReplication, Collections.singletonList(parentServer), false);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return ArrayUtils.addAll(daughterOne, daughterTwo);<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> return createAssignProceduresForOpeningNewRegions(env, daughters, regionReplication,<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> parentServer);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> }<a name="line.264"></a> |
| <span class="sourceLineNo">265</span><a name="line.265"></a> |
| <span class="sourceLineNo">266</span> static TransitRegionStateProcedure[] createAssignProceduresForOpeningNewRegions(<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> ServerName targetServer) {<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> return createAssignProcedures(env, regions, regionReplication, targetServer, false);<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> static void reopenRegionsForRollback(MasterProcedureEnv env, List<RegionInfo> regions,<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> int regionReplication, ServerName targetServer) {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> TransitRegionStateProcedure[] procs =<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> createAssignProcedures(env, regions, regionReplication, targetServer, true);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> if (procs.length > 0) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> static void removeNonDefaultReplicas(MasterProcedureEnv env, Stream<RegionInfo> regions,<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> int regionReplication) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> // Remove from in-memory states<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> regions.flatMap(hri -> IntStream.range(1, regionReplication)<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i))).forEach(hri -> {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> env.getAssignmentManager().getRegionStates().deleteRegion(hri);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> env.getMasterServices().getServerManager().removeRegion(hri);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> FavoredNodesManager fnm = env.getMasterServices().getFavoredNodesManager();<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> if (fnm != null) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> fnm.deleteFavoredNodesForRegions(Collections.singletonList(hri));<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> });<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span><a name="line.294"></a> |
| <span class="sourceLineNo">295</span> static void checkClosedRegion(MasterProcedureEnv env, RegionInfo regionInfo) throws IOException {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> if (WALSplitUtil.hasRecoveredEdits(env.getMasterConfiguration(), regionInfo)) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> throw new IOException("Recovered.edits are found in Region: " + regionInfo<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> + ", abort split/merge to prevent data loss");<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> }<a name="line.300"></a> |
| <span class="sourceLineNo">301</span>}<a name="line.301"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
