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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 java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.InterruptedIOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Arrays;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Collection;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.Collections;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Map;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.Callable;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.ExecutionException;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.ExecutorService;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.Executors;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.Future;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.concurrent.TimeUnit;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.stream.Stream;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.conf.Configuration;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.fs.FileSystem;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.fs.Path;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HConstants;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.ServerName;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.TableName;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.normalizer.NormalizationPlan;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.quotas.QuotaExceededException;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.regionserver.HStore;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.regionserver.HStoreFile;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.regionserver.RegionSplitPolicy;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.wal.WALSplitUtil;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span>import org.apache.hadoop.util.ReflectionUtils;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span>import org.slf4j.Logger;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span>import org.slf4j.LoggerFactory;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SplitTableRegionState;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span>/**<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * The procedure to split a region in a table.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * Takes lock on the parent region.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * It holds the lock for the life of the procedure.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * <p>Throws exception on construction if determines context hostile to spllt (cluster going<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * down or master is shutting down or table is disabled).</p><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span>@InterfaceAudience.Private<a name="line.93"></a> |
| <span class="sourceLineNo">094</span>public class SplitTableRegionProcedure<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> extends AbstractStateMachineRegionProcedure<SplitTableRegionState> {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private static final Logger LOG = LoggerFactory.getLogger(SplitTableRegionProcedure.class);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> private RegionInfo daughterOneRI;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> private RegionInfo daughterTwoRI;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> private byte[] bestSplitRow;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> private RegionSplitPolicy splitPolicy;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> public SplitTableRegionProcedure() {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> // Required by the Procedure framework to create the procedure on replay<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> public SplitTableRegionProcedure(final MasterProcedureEnv env,<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> super(env, regionToSplit);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> preflightChecks(env, true);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // When procedure goes to run in its prepare step, it also does these checkOnline checks. Here<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> // we fail-fast on construction. There it skips the split with just a warning.<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> checkOnline(env, regionToSplit);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> this.bestSplitRow = splitRow;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> checkSplittable(env, regionToSplit, bestSplitRow);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> final TableName table = regionToSplit.getTable();<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> final long rid = getDaughterRegionIdTimestamp(regionToSplit);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> this.daughterOneRI = RegionInfoBuilder.newBuilder(table)<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> .setStartKey(regionToSplit.getStartKey())<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> .setEndKey(bestSplitRow)<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> .setSplit(false)<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> .setRegionId(rid)<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> .build();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> this.daughterTwoRI = RegionInfoBuilder.newBuilder(table)<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> .setStartKey(bestSplitRow)<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> .setEndKey(regionToSplit.getEndKey())<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> .setSplit(false)<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> .setRegionId(rid)<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> .build();<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> if(htd.getRegionSplitPolicyClassName() != null) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> // Since we don't have region reference here, creating the split policy instance without it.<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // This can be used to invoke methods which don't require Region reference. This instantiation<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // of a class on Master-side though it only makes sense on the RegionServer-side is<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> // for Phoenix Local Indexing. Refer HBASE-12583 for more information.<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> Class<? extends RegionSplitPolicy> clazz =<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> RegionSplitPolicy.getSplitPolicyClass(htd, env.getMasterConfiguration());<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> this.splitPolicy = ReflectionUtils.newInstance(clazz, env.getMasterConfiguration());<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> @Override<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> protected LockState acquireLock(final MasterProcedureEnv env) {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> if (env.getProcedureScheduler().waitRegions(this, getTableName(), getParentRegion(),<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> daughterOneRI, daughterTwoRI)) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> try {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> LOG.debug(LockState.LOCK_EVENT_WAIT + " " + env.getProcedureScheduler().dumpLocks());<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> } catch (IOException e) {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> // Ignore, just for logging<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> }<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> return LockState.LOCK_EVENT_WAIT;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> return LockState.LOCK_ACQUIRED;<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> @Override<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> protected void releaseLock(final MasterProcedureEnv env) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> env.getProcedureScheduler().wakeRegions(this, getTableName(), getParentRegion(), daughterOneRI,<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> daughterTwoRI);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> @VisibleForTesting<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> public RegionInfo getDaughterOneRI() {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return daughterOneRI;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> @VisibleForTesting<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> public RegionInfo getDaughterTwoRI() {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> return daughterTwoRI;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> private boolean hasBestSplitRow() {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> return bestSplitRow != null && bestSplitRow.length > 0;<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> /**<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * Check whether the region is splittable<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * @param env MasterProcedureEnv<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * @param regionToSplit parent Region to be split<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @param splitRow if splitRow is not specified, will first try to get bestSplitRow from RS<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> */<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> private void checkSplittable(final MasterProcedureEnv env,<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> // Ask the remote RS if this region is splittable.<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // If we get an IOE, report it along w/ the failure so can see why we are not splittable at this time.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if(regionToSplit.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> throw new IllegalArgumentException ("Can't invoke split on non-default regions directly");<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> RegionStateNode node =<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> IOException splittableCheckIOE = null;<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> boolean splittable = false;<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (node != null) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> try {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> GetRegionInfoResponse response;<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if (!hasBestSplitRow()) {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> LOG.info(<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> "{} splitKey isn't explicitly specified, will try to find a best split key from RS {}",<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> node.getRegionInfo().getRegionNameAsString(), node.getRegionLocation());<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> response = AssignmentManagerUtil.getRegionInfoResponse(env, node.getRegionLocation(),<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> node.getRegionInfo(), true);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> bestSplitRow =<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> response.hasBestSplitRow() ? response.getBestSplitRow().toByteArray() : null;<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> } else {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> response = AssignmentManagerUtil.getRegionInfoResponse(env, node.getRegionLocation(),<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> node.getRegionInfo(), false);<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> }<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> splittable = response.hasSplittable() && response.getSplittable();<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> if (LOG.isDebugEnabled()) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> LOG.debug("Splittable=" + splittable + " " + node.toShortString());<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> } catch (IOException e) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> splittableCheckIOE = e;<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> }<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> if (!splittable) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> IOException e =<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> new DoNotRetryIOException(regionToSplit.getShortNameToLog() + " NOT splittable");<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> if (splittableCheckIOE != null) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> e.initCause(splittableCheckIOE);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> throw e;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span><a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> throw new DoNotRetryIOException("Region not splittable because bestSplitPoint = null, " +<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> "maybe table is too small for auto split. For force split, try specifying split row");<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span><a name="line.229"></a> |
| <span class="sourceLineNo">230</span> if (Bytes.equals(regionToSplit.getStartKey(), bestSplitRow)) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> throw new DoNotRetryIOException(<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span><a name="line.234"></a> |
| <span class="sourceLineNo">235</span> if (!regionToSplit.containsRow(bestSplitRow)) {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> throw new DoNotRetryIOException("Split row is not inside region key range splitKey:" +<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> Bytes.toStringBinary(splitRow) + " region: " + regionToSplit);<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> /**<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * Calculate daughter regionid to use.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * @param hri Parent {@link RegionInfo}<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> * @return Daughter region id (timestamp) to use.<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> */<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> private static long getDaughterRegionIdTimestamp(final RegionInfo hri) {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> long rid = EnvironmentEdgeManager.currentTime();<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> // Regionid is timestamp. Can't be less than that of parent else will insert<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // at wrong location in hbase:meta (See HBASE-710).<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> if (rid < hri.getRegionId()) {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> " but current time here is " + rid);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> rid = hri.getRegionId() + 1;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> return rid;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> private void removeNonDefaultReplicas(MasterProcedureEnv env) throws IOException {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> AssignmentManagerUtil.removeNonDefaultReplicas(env, Stream.of(getParentRegion()),<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> getRegionReplication(env));<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> private void checkClosedRegions(MasterProcedureEnv env) throws IOException {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> // theoretically this should not happen any more after we use TRSP, but anyway let's add a check<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> // here<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> AssignmentManagerUtil.checkClosedRegion(env, getParentRegion());<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span><a name="line.268"></a> |
| <span class="sourceLineNo">269</span> @Override<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> protected Flow executeFromState(MasterProcedureEnv env, SplitTableRegionState state)<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> throws InterruptedException {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> LOG.trace("{} execute state={}", this, state);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span><a name="line.273"></a> |
| <span class="sourceLineNo">274</span> try {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> switch (state) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> if (prepareSplitRegion(env)) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> break;<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> } else {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> return Flow.NO_MORE_STATE;<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> preSplitRegion(env);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> break;<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> addChildProcedure(createUnassignProcedures(env));<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> break;<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> checkClosedRegions(env);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> break;<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> removeNonDefaultReplicas(env);<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> createDaughterRegions(env);<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> break;<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> writeMaxSequenceIdFile(env);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META);<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> break;<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> preSplitRegionBeforeMETA(env);<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> break;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> updateMeta(env);<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META);<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> break;<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> preSplitRegionAfterMETA(env);<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> break;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> addChildProcedure(createAssignProcedures(env));<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> break;<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> postSplitRegion(env);<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> return Flow.NO_MORE_STATE;<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> default:<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> }<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> } catch (IOException e) {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> String msg = "Splitting " + getParentRegion().getEncodedName() + ", " + this;<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> if (!isRollbackSupported(state)) {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> // We reach a state that cannot be rolled back. We just need to keep retrying.<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> LOG.warn(msg, e);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> } else {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> LOG.error(msg, e);<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> setFailure("master-split-regions", e);<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> }<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> // if split fails, need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> return Flow.HAS_MORE_STATE;<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span><a name="line.339"></a> |
| <span class="sourceLineNo">340</span> /**<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * To rollback {@link SplitTableRegionProcedure}, an AssignProcedure is asynchronously<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> * submitted for parent region to be split (rollback doesn't wait on the completion of the<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> * AssignProcedure) . This can be improved by changing rollback() to support sub-procedures.<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * See HBASE-19851 for details.<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> */<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> @Override<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> throws IOException, InterruptedException {<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> LOG.trace("{} rollback state={}", this, state);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span><a name="line.350"></a> |
| <span class="sourceLineNo">351</span> try {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> switch (state) {<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> // PONR<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> break;<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> break;<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> // Doing nothing, in SPLIT_TABLE_REGION_CLOSE_PARENT_REGION,<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> // we will bring parent region online<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> break;<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> openParentRegion(env);<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> break;<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> postRollBackSplitRegion(env);<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> break;<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> break; // nothing to do<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> default:<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> }<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> } catch (IOException e) {<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> // This will be retried. Unless there is a bug in the code,<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> // this should be just a "temporary error" (e.g. network down)<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> " for splitting the region "<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> throw e;<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> /*<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> * Check whether we are in the state that can be rollback<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> */<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> @Override<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> protected boolean isRollbackSupported(final SplitTableRegionState state) {<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> switch (state) {<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> // It is not safe to rollback if we reach to these states.<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> return false;<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> default:<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> break;<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> }<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> return true;<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span><a name="line.407"></a> |
| <span class="sourceLineNo">408</span> @Override<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> protected SplitTableRegionState getState(final int stateId) {<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> return SplitTableRegionState.forNumber(stateId);<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> }<a name="line.411"></a> |
| <span class="sourceLineNo">412</span><a name="line.412"></a> |
| <span class="sourceLineNo">413</span> @Override<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> protected int getStateId(final SplitTableRegionState state) {<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> return state.getNumber();<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> }<a name="line.416"></a> |
| <span class="sourceLineNo">417</span><a name="line.417"></a> |
| <span class="sourceLineNo">418</span> @Override<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> protected SplitTableRegionState getInitialState() {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> return SplitTableRegionState.SPLIT_TABLE_REGION_PREPARE;<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> }<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> @Override<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> throws IOException {<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> super.serializeStateData(serializer);<a name="line.426"></a> |
| <span class="sourceLineNo">427</span><a name="line.427"></a> |
| <span class="sourceLineNo">428</span> final MasterProcedureProtos.SplitTableRegionStateData.Builder splitTableRegionMsg =<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> MasterProcedureProtos.SplitTableRegionStateData.newBuilder()<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> .setParentRegionInfo(ProtobufUtil.toRegionInfo(getRegion()))<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughterOneRI))<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughterTwoRI));<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> serializer.serialize(splitTableRegionMsg.build());<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> }<a name="line.435"></a> |
| <span class="sourceLineNo">436</span><a name="line.436"></a> |
| <span class="sourceLineNo">437</span> @Override<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> throws IOException {<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> super.deserializeStateData(serializer);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span><a name="line.441"></a> |
| <span class="sourceLineNo">442</span> final MasterProcedureProtos.SplitTableRegionStateData splitTableRegionsMsg =<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> serializer.deserialize(MasterProcedureProtos.SplitTableRegionStateData.class);<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> setUser(MasterProcedureUtil.toUserInfo(splitTableRegionsMsg.getUserInfo()));<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> setRegion(ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getParentRegionInfo()));<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> daughterOneRI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(0));<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> daughterTwoRI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(1));<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> }<a name="line.449"></a> |
| <span class="sourceLineNo">450</span><a name="line.450"></a> |
| <span class="sourceLineNo">451</span> @Override<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> sb.append(getClass().getSimpleName());<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> sb.append(" table=");<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> sb.append(getTableName());<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> sb.append(", parent=");<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> sb.append(getParentRegion().getShortNameToLog());<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> sb.append(", daughterA=");<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> sb.append(daughterOneRI.getShortNameToLog());<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> sb.append(", daughterB=");<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> sb.append(daughterTwoRI.getShortNameToLog());<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> }<a name="line.462"></a> |
| <span class="sourceLineNo">463</span><a name="line.463"></a> |
| <span class="sourceLineNo">464</span> private RegionInfo getParentRegion() {<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> return getRegion();<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> }<a name="line.466"></a> |
| <span class="sourceLineNo">467</span><a name="line.467"></a> |
| <span class="sourceLineNo">468</span> @Override<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> public TableOperationType getTableOperationType() {<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> return TableOperationType.REGION_SPLIT;<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> }<a name="line.471"></a> |
| <span class="sourceLineNo">472</span><a name="line.472"></a> |
| <span class="sourceLineNo">473</span> @Override<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getSplitProcMetrics();<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span><a name="line.477"></a> |
| <span class="sourceLineNo">478</span> private byte[] getSplitRow() {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> return daughterTwoRI.getStartKey();<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> }<a name="line.480"></a> |
| <span class="sourceLineNo">481</span><a name="line.481"></a> |
| <span class="sourceLineNo">482</span> private static final State[] EXPECTED_SPLIT_STATES = new State[] { State.OPEN, State.CLOSED };<a name="line.482"></a> |
| <span class="sourceLineNo">483</span><a name="line.483"></a> |
| <span class="sourceLineNo">484</span> /**<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> * Prepare to Split region.<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> * @param env MasterProcedureEnv<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> */<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> @VisibleForTesting<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> public boolean prepareSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // Fail if we are taking snapshot for the given table<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> if (env.getMasterServices().getSnapshotManager()<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> .isTakingSnapshot(getParentRegion().getTable())) {<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> setFailure(new IOException("Skip splitting region " + getParentRegion().getShortNameToLog() +<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> ", because we are taking snapshot for the table " + getParentRegion().getTable()));<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> return false;<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> }<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> // Check whether the region is splittable<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> RegionStateNode node =<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.499"></a> |
| <span class="sourceLineNo">500</span><a name="line.500"></a> |
| <span class="sourceLineNo">501</span> if (node == null) {<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> throw new UnknownRegionException(getParentRegion().getRegionNameAsString());<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> }<a name="line.503"></a> |
| <span class="sourceLineNo">504</span><a name="line.504"></a> |
| <span class="sourceLineNo">505</span> RegionInfo parentHRI = node.getRegionInfo();<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> if (parentHRI == null) {<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> LOG.info("Unsplittable; parent region is null; node={}", node);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> return false;<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> }<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> // Lookup the parent HRI state from the AM, which has the latest updated info.<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> // Protect against the case where concurrent SPLIT requests came in and succeeded<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> // just before us.<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> if (node.isInState(State.SPLIT)) {<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> LOG.info("Split of " + parentHRI + " skipped; state is already SPLIT");<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> return false;<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> }<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> if (parentHRI.isSplit() || parentHRI.isOffline()) {<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> LOG.info("Split of " + parentHRI + " skipped because offline/split.");<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> return false;<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> }<a name="line.520"></a> |
| <span class="sourceLineNo">521</span><a name="line.521"></a> |
| <span class="sourceLineNo">522</span> // expected parent to be online or closed<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> if (!node.isInState(EXPECTED_SPLIT_STATES)) {<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> // We may have SPLIT already?<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> setFailure(new IOException("Split " + parentHRI.getRegionNameAsString() +<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> " FAILED because state=" + node.getState() + "; expected " +<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> Arrays.toString(EXPECTED_SPLIT_STATES)));<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> return false;<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> }<a name="line.529"></a> |
| <span class="sourceLineNo">530</span><a name="line.530"></a> |
| <span class="sourceLineNo">531</span> // Mostly this check is not used because we already check the switch before submit a split<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> // procedure. Just for safe, check the switch again. This procedure can be rollbacked if<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> // the switch was set to false after submit.<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.SPLIT)) {<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> LOG.warn("pid=" + getProcId() + " split switch is off! skip split of " + parentHRI);<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> setFailure(new IOException("Split region " + parentHRI.getRegionNameAsString() +<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> " failed due to split switch off"));<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> return false;<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> }<a name="line.539"></a> |
| <span class="sourceLineNo">540</span><a name="line.540"></a> |
| <span class="sourceLineNo">541</span> if (!env.getMasterServices().getTableDescriptors().get(getTableName()).isSplitEnabled()) {<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> LOG.warn("pid={}, split is disabled for the table! Skipping split of {}", getProcId(),<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> parentHRI);<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> setFailure(new IOException("Split region " + parentHRI.getRegionNameAsString()<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> + " failed as region split is disabled for the table"));<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> return false;<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> }<a name="line.547"></a> |
| <span class="sourceLineNo">548</span><a name="line.548"></a> |
| <span class="sourceLineNo">549</span> // set node state as SPLITTING<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> node.setState(State.SPLITTING);<a name="line.550"></a> |
| <span class="sourceLineNo">551</span><a name="line.551"></a> |
| <span class="sourceLineNo">552</span> // Since we have the lock and the master is coordinating the operation<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> // we are always able to split the region<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> return true;<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> }<a name="line.555"></a> |
| <span class="sourceLineNo">556</span><a name="line.556"></a> |
| <span class="sourceLineNo">557</span> /**<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> * Action before splitting region in a table.<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> * @param env MasterProcedureEnv<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> */<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> private void preSplitRegion(final MasterProcedureEnv env)<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> throws IOException, InterruptedException {<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> if (cpHost != null) {<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> cpHost.preSplitRegionAction(getTableName(), getSplitRow(), getUser());<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> }<a name="line.566"></a> |
| <span class="sourceLineNo">567</span><a name="line.567"></a> |
| <span class="sourceLineNo">568</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> // Notify QuotaManager and RegionNormalizer<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> try {<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> env.getMasterServices().getMasterQuotaManager().onRegionSplit(this.getParentRegion());<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> } catch (QuotaExceededException e) {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> env.getMasterServices().getRegionNormalizer().planSkipped(this.getParentRegion(),<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> NormalizationPlan.PlanType.SPLIT);<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> throw e;<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> }<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> }<a name="line.577"></a> |
| <span class="sourceLineNo">578</span><a name="line.578"></a> |
| <span class="sourceLineNo">579</span> /**<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> * Action after rollback a split table region action.<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> * @param env MasterProcedureEnv<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> */<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> private void postRollBackSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> if (cpHost != null) {<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> cpHost.postRollBackSplitRegionAction(getUser());<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> }<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> }<a name="line.588"></a> |
| <span class="sourceLineNo">589</span><a name="line.589"></a> |
| <span class="sourceLineNo">590</span> /**<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> * Rollback close parent region<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> */<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> private void openParentRegion(MasterProcedureEnv env) throws IOException {<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> AssignmentManagerUtil.reopenRegionsForRollback(env,<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> Collections.singletonList((getParentRegion())), getRegionReplication(env),<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> getParentRegionServerName(env));<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> }<a name="line.597"></a> |
| <span class="sourceLineNo">598</span><a name="line.598"></a> |
| <span class="sourceLineNo">599</span> /**<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> * Create daughter regions<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> */<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> @VisibleForTesting<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> public void createDaughterRegions(final MasterProcedureEnv env) throws IOException {<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> final Path tabledir = CommonFSUtils.getTableDir(mfs.getRootDir(), getTableName());<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> final FileSystem fs = mfs.getFileSystem();<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> env.getMasterConfiguration(), fs, tabledir, getParentRegion(), false);<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> regionFs.createSplitsDir(daughterOneRI, daughterTwoRI);<a name="line.609"></a> |
| <span class="sourceLineNo">610</span><a name="line.610"></a> |
| <span class="sourceLineNo">611</span> Pair<Integer, Integer> expectedReferences = splitStoreFiles(env, regionFs);<a name="line.611"></a> |
| <span class="sourceLineNo">612</span><a name="line.612"></a> |
| <span class="sourceLineNo">613</span> assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> regionFs.getSplitsDir(daughterOneRI));<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> //Move the files from the temporary .splits to the final /table/region directory<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> regionFs.commitDaughterRegion(daughterOneRI);<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> new Path(tabledir, daughterOneRI.getEncodedName()));<a name="line.618"></a> |
| <span class="sourceLineNo">619</span><a name="line.619"></a> |
| <span class="sourceLineNo">620</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> regionFs.getSplitsDir(daughterTwoRI));<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> regionFs.commitDaughterRegion(daughterTwoRI);<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> new Path(tabledir, daughterTwoRI.getEncodedName()));<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> }<a name="line.625"></a> |
| <span class="sourceLineNo">626</span><a name="line.626"></a> |
| <span class="sourceLineNo">627</span> /**<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> * Create Split directory<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> * @param env MasterProcedureEnv<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> */<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> private Pair<Integer, Integer> splitStoreFiles(final MasterProcedureEnv env,<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> final HRegionFileSystem regionFs) throws IOException {<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> final Configuration conf = env.getMasterConfiguration();<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> // The following code sets up a thread pool executor with as many slots as<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> // there's files to split. It then fires up everything, waits for<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> // completion and finally checks for any exception<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> //<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> // Note: splitStoreFiles creates daughter region dirs under the parent splits dir<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> // Nothing to unroll here if failure -- re-run createSplitsDir will<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> // clean this up.<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> int nbFiles = 0;<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> final Map<String, Collection<StoreFileInfo>> files =<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> new HashMap<String, Collection<StoreFileInfo>>(htd.getColumnFamilyCount());<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> for (ColumnFamilyDescriptor cfd : htd.getColumnFamilies()) {<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> String family = cfd.getNameAsString();<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> Collection<StoreFileInfo> sfis = regionFs.getStoreFiles(family);<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> if (sfis == null) {<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> continue;<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> }<a name="line.650"></a> |
| <span class="sourceLineNo">651</span> Collection<StoreFileInfo> filteredSfis = null;<a name="line.651"></a> |
| <span class="sourceLineNo">652</span> for (StoreFileInfo sfi : sfis) {<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> // Filter. There is a lag cleaning up compacted reference files. They get cleared<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> // after a delay in case outstanding Scanners still have references. Because of this,<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> // the listing of the Store content may have straggler reference files. Skip these.<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> // It should be safe to skip references at this point because we checked above with<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> // the region if it thinks it is splittable and if we are here, it thinks it is<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> // splitable.<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> if (sfi.isReference()) {<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> LOG.info("Skipping split of " + sfi + "; presuming ready for archiving.");<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> continue;<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> }<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> if (filteredSfis == null) {<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> filteredSfis = new ArrayList<StoreFileInfo>(sfis.size());<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> files.put(family, filteredSfis);<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> }<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> filteredSfis.add(sfi);<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> nbFiles++;<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> }<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> }<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> if (nbFiles == 0) {<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> // no file needs to be splitted.<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> return new Pair<Integer, Integer>(0, 0);<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> }<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> // Max #threads is the smaller of the number of storefiles or the default max determined above.<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> int maxThreads = Math.min(<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> conf.getInt(HConstants.REGION_SPLIT_THREADS_MAX,<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> conf.getInt(HStore.BLOCKING_STOREFILES_KEY, HStore.DEFAULT_BLOCKING_STOREFILE_COUNT)),<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> nbFiles);<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> LOG.info("pid=" + getProcId() + " splitting " + nbFiles + " storefiles, region=" +<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> getParentRegion().getShortNameToLog() + ", threads=" + maxThreads);<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> final ExecutorService threadPool = Executors.newFixedThreadPool(maxThreads,<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> new ThreadFactoryBuilder().setNameFormat("StoreFileSplitter-pool-%d").setDaemon(true)<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> final List<Future<Pair<Path, Path>>> futures = new ArrayList<Future<Pair<Path, Path>>>(nbFiles);<a name="line.685"></a> |
| <span class="sourceLineNo">686</span><a name="line.686"></a> |
| <span class="sourceLineNo">687</span> // Split each store file.<a name="line.687"></a> |
| <span class="sourceLineNo">688</span> for (Map.Entry<String, Collection<StoreFileInfo>> e : files.entrySet()) {<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> byte[] familyName = Bytes.toBytes(e.getKey());<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> final ColumnFamilyDescriptor hcd = htd.getColumnFamily(familyName);<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> final Collection<StoreFileInfo> storeFiles = e.getValue();<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> if (storeFiles != null && storeFiles.size() > 0) {<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> for (StoreFileInfo storeFileInfo : storeFiles) {<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> // As this procedure is running on master, use CacheConfig.DISABLED means<a name="line.694"></a> |
| <span class="sourceLineNo">695</span> // don't cache any block.<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> StoreFileSplitter sfs =<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> new StoreFileSplitter(regionFs, familyName, new HStoreFile(<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> storeFileInfo, hcd.getBloomFilterType(), CacheConfig.DISABLED));<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> futures.add(threadPool.submit(sfs));<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> }<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> }<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> }<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> // Shutdown the pool<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> threadPool.shutdown();<a name="line.704"></a> |
| <span class="sourceLineNo">705</span><a name="line.705"></a> |
| <span class="sourceLineNo">706</span> // Wait for all the tasks to finish.<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> // When splits ran on the RegionServer, how-long-to-wait-configuration was named<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> // hbase.regionserver.fileSplitTimeout. If set, use its value.<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> long fileSplitTimeout = conf.getLong("hbase.master.fileSplitTimeout",<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> conf.getLong("hbase.regionserver.fileSplitTimeout", 600000));<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> try {<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> boolean stillRunning = !threadPool.awaitTermination(fileSplitTimeout, TimeUnit.MILLISECONDS);<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> if (stillRunning) {<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> threadPool.shutdownNow();<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> // wait for the thread to shutdown completely.<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> while (!threadPool.isTerminated()) {<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> Thread.sleep(50);<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> }<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> throw new IOException(<a name="line.719"></a> |
| <span class="sourceLineNo">720</span> "Took too long to split the" + " files and create the references, aborting split");<a name="line.720"></a> |
| <span class="sourceLineNo">721</span> }<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> } catch (InterruptedException e) {<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> throw (InterruptedIOException) new InterruptedIOException().initCause(e);<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> }<a name="line.724"></a> |
| <span class="sourceLineNo">725</span><a name="line.725"></a> |
| <span class="sourceLineNo">726</span> int daughterA = 0;<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> int daughterB = 0;<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> // Look for any exception<a name="line.728"></a> |
| <span class="sourceLineNo">729</span> for (Future<Pair<Path, Path>> future : futures) {<a name="line.729"></a> |
| <span class="sourceLineNo">730</span> try {<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> Pair<Path, Path> p = future.get();<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> daughterA += p.getFirst() != null ? 1 : 0;<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> daughterB += p.getSecond() != null ? 1 : 0;<a name="line.733"></a> |
| <span class="sourceLineNo">734</span> } catch (InterruptedException e) {<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> throw (InterruptedIOException) new InterruptedIOException().initCause(e);<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> } catch (ExecutionException e) {<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> throw new IOException(e);<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> }<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> }<a name="line.739"></a> |
| <span class="sourceLineNo">740</span><a name="line.740"></a> |
| <span class="sourceLineNo">741</span> if (LOG.isDebugEnabled()) {<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> LOG.debug("pid=" + getProcId() + " split storefiles for region " +<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> getParentRegion().getShortNameToLog() + " Daughter A: " + daughterA +<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> " storefiles, Daughter B: " + daughterB + " storefiles.");<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> }<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> return new Pair<Integer, Integer>(daughterA, daughterB);<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> }<a name="line.747"></a> |
| <span class="sourceLineNo">748</span><a name="line.748"></a> |
| <span class="sourceLineNo">749</span> private void assertReferenceFileCount(final FileSystem fs, final int expectedReferenceFileCount,<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> final Path dir) throws IOException {<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> if (expectedReferenceFileCount != 0 &&<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> expectedReferenceFileCount != FSUtils.getRegionReferenceFileCount(fs, dir)) {<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> throw new IOException("Failing split. Expected reference file count isn't equal.");<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> }<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> }<a name="line.755"></a> |
| <span class="sourceLineNo">756</span><a name="line.756"></a> |
| <span class="sourceLineNo">757</span> private Pair<Path, Path> splitStoreFile(HRegionFileSystem regionFs, byte[] family, HStoreFile sf)<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> throws IOException {<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> if (LOG.isDebugEnabled()) {<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> LOG.debug("pid=" + getProcId() + " splitting started for store file: " +<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> sf.getPath() + " for region: " + getParentRegion().getShortNameToLog());<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> }<a name="line.762"></a> |
| <span class="sourceLineNo">763</span><a name="line.763"></a> |
| <span class="sourceLineNo">764</span> final byte[] splitRow = getSplitRow();<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> final String familyName = Bytes.toString(family);<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> final Path path_first = regionFs.splitStoreFile(this.daughterOneRI, familyName, sf, splitRow,<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> false, splitPolicy);<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> final Path path_second = regionFs.splitStoreFile(this.daughterTwoRI, familyName, sf, splitRow,<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> true, splitPolicy);<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> if (LOG.isDebugEnabled()) {<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> LOG.debug("pid=" + getProcId() + " splitting complete for store file: " +<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> sf.getPath() + " for region: " + getParentRegion().getShortNameToLog());<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> }<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> return new Pair<Path,Path>(path_first, path_second);<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> }<a name="line.775"></a> |
| <span class="sourceLineNo">776</span><a name="line.776"></a> |
| <span class="sourceLineNo">777</span> /**<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> * Utility class used to do the file splitting / reference writing<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> * in parallel instead of sequentially.<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> */<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> private class StoreFileSplitter implements Callable<Pair<Path,Path>> {<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> private final HRegionFileSystem regionFs;<a name="line.782"></a> |
| <span class="sourceLineNo">783</span> private final byte[] family;<a name="line.783"></a> |
| <span class="sourceLineNo">784</span> private final HStoreFile sf;<a name="line.784"></a> |
| <span class="sourceLineNo">785</span><a name="line.785"></a> |
| <span class="sourceLineNo">786</span> /**<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> * Constructor that takes what it needs to split<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> * @param regionFs the file system<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> * @param family Family that contains the store file<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> * @param sf which file<a name="line.790"></a> |
| <span class="sourceLineNo">791</span> */<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> public StoreFileSplitter(HRegionFileSystem regionFs, byte[] family, HStoreFile sf) {<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> this.regionFs = regionFs;<a name="line.793"></a> |
| <span class="sourceLineNo">794</span> this.sf = sf;<a name="line.794"></a> |
| <span class="sourceLineNo">795</span> this.family = family;<a name="line.795"></a> |
| <span class="sourceLineNo">796</span> }<a name="line.796"></a> |
| <span class="sourceLineNo">797</span><a name="line.797"></a> |
| <span class="sourceLineNo">798</span> @Override<a name="line.798"></a> |
| <span class="sourceLineNo">799</span> public Pair<Path,Path> call() throws IOException {<a name="line.799"></a> |
| <span class="sourceLineNo">800</span> return splitStoreFile(regionFs, family, sf);<a name="line.800"></a> |
| <span class="sourceLineNo">801</span> }<a name="line.801"></a> |
| <span class="sourceLineNo">802</span> }<a name="line.802"></a> |
| <span class="sourceLineNo">803</span><a name="line.803"></a> |
| <span class="sourceLineNo">804</span> /**<a name="line.804"></a> |
| <span class="sourceLineNo">805</span> * Post split region actions before the Point-of-No-Return step<a name="line.805"></a> |
| <span class="sourceLineNo">806</span> * @param env MasterProcedureEnv<a name="line.806"></a> |
| <span class="sourceLineNo">807</span> **/<a name="line.807"></a> |
| <span class="sourceLineNo">808</span> private void preSplitRegionBeforeMETA(final MasterProcedureEnv env)<a name="line.808"></a> |
| <span class="sourceLineNo">809</span> throws IOException, InterruptedException {<a name="line.809"></a> |
| <span class="sourceLineNo">810</span> final List<Mutation> metaEntries = new ArrayList<Mutation>();<a name="line.810"></a> |
| <span class="sourceLineNo">811</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.811"></a> |
| <span class="sourceLineNo">812</span> if (cpHost != null) {<a name="line.812"></a> |
| <span class="sourceLineNo">813</span> cpHost.preSplitBeforeMETAAction(getSplitRow(), metaEntries, getUser());<a name="line.813"></a> |
| <span class="sourceLineNo">814</span> try {<a name="line.814"></a> |
| <span class="sourceLineNo">815</span> for (Mutation p : metaEntries) {<a name="line.815"></a> |
| <span class="sourceLineNo">816</span> RegionInfo.parseRegionName(p.getRow());<a name="line.816"></a> |
| <span class="sourceLineNo">817</span> }<a name="line.817"></a> |
| <span class="sourceLineNo">818</span> } catch (IOException e) {<a name="line.818"></a> |
| <span class="sourceLineNo">819</span> LOG.error("pid=" + getProcId() + " row key of mutation from coprocessor not parsable as "<a name="line.819"></a> |
| <span class="sourceLineNo">820</span> + "region name."<a name="line.820"></a> |
| <span class="sourceLineNo">821</span> + "Mutations from coprocessor should only for hbase:meta table.");<a name="line.821"></a> |
| <span class="sourceLineNo">822</span> throw e;<a name="line.822"></a> |
| <span class="sourceLineNo">823</span> }<a name="line.823"></a> |
| <span class="sourceLineNo">824</span> }<a name="line.824"></a> |
| <span class="sourceLineNo">825</span> }<a name="line.825"></a> |
| <span class="sourceLineNo">826</span><a name="line.826"></a> |
| <span class="sourceLineNo">827</span> /**<a name="line.827"></a> |
| <span class="sourceLineNo">828</span> * Add daughter regions to META<a name="line.828"></a> |
| <span class="sourceLineNo">829</span> * @param env MasterProcedureEnv<a name="line.829"></a> |
| <span class="sourceLineNo">830</span> */<a name="line.830"></a> |
| <span class="sourceLineNo">831</span> private void updateMeta(final MasterProcedureEnv env) throws IOException {<a name="line.831"></a> |
| <span class="sourceLineNo">832</span> env.getAssignmentManager().markRegionAsSplit(getParentRegion(), getParentRegionServerName(env),<a name="line.832"></a> |
| <span class="sourceLineNo">833</span> daughterOneRI, daughterTwoRI);<a name="line.833"></a> |
| <span class="sourceLineNo">834</span> }<a name="line.834"></a> |
| <span class="sourceLineNo">835</span><a name="line.835"></a> |
| <span class="sourceLineNo">836</span> /**<a name="line.836"></a> |
| <span class="sourceLineNo">837</span> * Pre split region actions after the Point-of-No-Return step<a name="line.837"></a> |
| <span class="sourceLineNo">838</span> * @param env MasterProcedureEnv<a name="line.838"></a> |
| <span class="sourceLineNo">839</span> **/<a name="line.839"></a> |
| <span class="sourceLineNo">840</span> private void preSplitRegionAfterMETA(final MasterProcedureEnv env)<a name="line.840"></a> |
| <span class="sourceLineNo">841</span> throws IOException, InterruptedException {<a name="line.841"></a> |
| <span class="sourceLineNo">842</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.842"></a> |
| <span class="sourceLineNo">843</span> if (cpHost != null) {<a name="line.843"></a> |
| <span class="sourceLineNo">844</span> cpHost.preSplitAfterMETAAction(getUser());<a name="line.844"></a> |
| <span class="sourceLineNo">845</span> }<a name="line.845"></a> |
| <span class="sourceLineNo">846</span> }<a name="line.846"></a> |
| <span class="sourceLineNo">847</span><a name="line.847"></a> |
| <span class="sourceLineNo">848</span> /**<a name="line.848"></a> |
| <span class="sourceLineNo">849</span> * Post split region actions<a name="line.849"></a> |
| <span class="sourceLineNo">850</span> * @param env MasterProcedureEnv<a name="line.850"></a> |
| <span class="sourceLineNo">851</span> **/<a name="line.851"></a> |
| <span class="sourceLineNo">852</span> private void postSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.852"></a> |
| <span class="sourceLineNo">853</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.853"></a> |
| <span class="sourceLineNo">854</span> if (cpHost != null) {<a name="line.854"></a> |
| <span class="sourceLineNo">855</span> cpHost.postCompletedSplitRegionAction(daughterOneRI, daughterTwoRI, getUser());<a name="line.855"></a> |
| <span class="sourceLineNo">856</span> }<a name="line.856"></a> |
| <span class="sourceLineNo">857</span> }<a name="line.857"></a> |
| <span class="sourceLineNo">858</span><a name="line.858"></a> |
| <span class="sourceLineNo">859</span> private ServerName getParentRegionServerName(final MasterProcedureEnv env) {<a name="line.859"></a> |
| <span class="sourceLineNo">860</span> return env.getMasterServices().getAssignmentManager().getRegionStates()<a name="line.860"></a> |
| <span class="sourceLineNo">861</span> .getRegionServerOfRegion(getParentRegion());<a name="line.861"></a> |
| <span class="sourceLineNo">862</span> }<a name="line.862"></a> |
| <span class="sourceLineNo">863</span><a name="line.863"></a> |
| <span class="sourceLineNo">864</span> private TransitRegionStateProcedure[] createUnassignProcedures(MasterProcedureEnv env)<a name="line.864"></a> |
| <span class="sourceLineNo">865</span> throws IOException {<a name="line.865"></a> |
| <span class="sourceLineNo">866</span> return AssignmentManagerUtil.createUnassignProceduresForSplitOrMerge(env,<a name="line.866"></a> |
| <span class="sourceLineNo">867</span> Stream.of(getParentRegion()), getRegionReplication(env));<a name="line.867"></a> |
| <span class="sourceLineNo">868</span> }<a name="line.868"></a> |
| <span class="sourceLineNo">869</span><a name="line.869"></a> |
| <span class="sourceLineNo">870</span> private TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env)<a name="line.870"></a> |
| <span class="sourceLineNo">871</span> throws IOException {<a name="line.871"></a> |
| <span class="sourceLineNo">872</span> List<RegionInfo> hris = new ArrayList<RegionInfo>(2);<a name="line.872"></a> |
| <span class="sourceLineNo">873</span> hris.add(daughterOneRI);<a name="line.873"></a> |
| <span class="sourceLineNo">874</span> hris.add(daughterTwoRI);<a name="line.874"></a> |
| <span class="sourceLineNo">875</span> return AssignmentManagerUtil.createAssignProceduresForOpeningNewRegions(env, hris,<a name="line.875"></a> |
| <span class="sourceLineNo">876</span> getRegionReplication(env), getParentRegionServerName(env));<a name="line.876"></a> |
| <span class="sourceLineNo">877</span> }<a name="line.877"></a> |
| <span class="sourceLineNo">878</span><a name="line.878"></a> |
| <span class="sourceLineNo">879</span> private int getRegionReplication(final MasterProcedureEnv env) throws IOException {<a name="line.879"></a> |
| <span class="sourceLineNo">880</span> final TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.880"></a> |
| <span class="sourceLineNo">881</span> return htd.getRegionReplication();<a name="line.881"></a> |
| <span class="sourceLineNo">882</span> }<a name="line.882"></a> |
| <span class="sourceLineNo">883</span><a name="line.883"></a> |
| <span class="sourceLineNo">884</span> private void writeMaxSequenceIdFile(MasterProcedureEnv env) throws IOException {<a name="line.884"></a> |
| <span class="sourceLineNo">885</span> MasterFileSystem fs = env.getMasterFileSystem();<a name="line.885"></a> |
| <span class="sourceLineNo">886</span> long maxSequenceId = WALSplitUtil.getMaxRegionSequenceId(env.getMasterConfiguration(),<a name="line.886"></a> |
| <span class="sourceLineNo">887</span> getParentRegion(), fs::getFileSystem, fs::getWALFileSystem);<a name="line.887"></a> |
| <span class="sourceLineNo">888</span> if (maxSequenceId > 0) {<a name="line.888"></a> |
| <span class="sourceLineNo">889</span> WALSplitUtil.writeRegionSequenceIdFile(fs.getWALFileSystem(),<a name="line.889"></a> |
| <span class="sourceLineNo">890</span> getWALRegionDir(env, daughterOneRI), maxSequenceId);<a name="line.890"></a> |
| <span class="sourceLineNo">891</span> WALSplitUtil.writeRegionSequenceIdFile(fs.getWALFileSystem(),<a name="line.891"></a> |
| <span class="sourceLineNo">892</span> getWALRegionDir(env, daughterTwoRI), maxSequenceId);<a name="line.892"></a> |
| <span class="sourceLineNo">893</span> }<a name="line.893"></a> |
| <span class="sourceLineNo">894</span> }<a name="line.894"></a> |
| <span class="sourceLineNo">895</span><a name="line.895"></a> |
| <span class="sourceLineNo">896</span> @Override<a name="line.896"></a> |
| <span class="sourceLineNo">897</span> protected boolean abort(MasterProcedureEnv env) {<a name="line.897"></a> |
| <span class="sourceLineNo">898</span> // Abort means rollback. We can't rollback all steps. HBASE-18018 added abort to all<a name="line.898"></a> |
| <span class="sourceLineNo">899</span> // Procedures. Here is a Procedure that has a PONR and cannot be aborted wants it enters this<a name="line.899"></a> |
| <span class="sourceLineNo">900</span> // range of steps; what do we do for these should an operator want to cancel them? HBASE-20022.<a name="line.900"></a> |
| <span class="sourceLineNo">901</span> return isRollbackSupported(getCurrentState())? super.abort(env): false;<a name="line.901"></a> |
| <span class="sourceLineNo">902</span> }<a name="line.902"></a> |
| <span class="sourceLineNo">903</span>}<a name="line.903"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
