You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/09/04 14:48:03 UTC
[14/51] [partial] hbase-site git commit: Published site at
c6a65ba63fce85ac7c4b62b96ef2bbe6c35d2f00.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/293abb17/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
index 2f5e86e..475f5b2 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
@@ -30,837 +30,841 @@
<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.HashMap;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.Map;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.concurrent.Callable;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.ExecutionException;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.concurrent.ExecutorService;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.concurrent.Executors;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.concurrent.Future;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.concurrent.TimeUnit;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.stream.Stream;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.conf.Configuration;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.fs.FileSystem;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.fs.Path;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HConstants;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ServerName;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.TableName;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.normalizer.NormalizationPlan;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.quotas.QuotaExceededException;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.regionserver.HStore;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.regionserver.HStoreFile;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.regionserver.RegionSplitPolicy;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.util.ReflectionUtils;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.slf4j.Logger;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.slf4j.LoggerFactory;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.76"></a>
-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SplitTableRegionState;<a name="line.81"></a>
-<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span>/**<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * The procedure to split a region in a table.<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * Takes lock on the parent region.<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * It holds the lock for the life of the procedure.<a name="line.86"></a>
-<span class="sourceLineNo">087</span> * <p>Throws exception on construction if determines context hostile to spllt (cluster going<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * down or master is shutting down or table is disabled).</p><a name="line.88"></a>
-<span class="sourceLineNo">089</span> */<a name="line.89"></a>
-<span class="sourceLineNo">090</span>@InterfaceAudience.Private<a name="line.90"></a>
-<span class="sourceLineNo">091</span>public class SplitTableRegionProcedure<a name="line.91"></a>
-<span class="sourceLineNo">092</span> extends AbstractStateMachineRegionProcedure<SplitTableRegionState> {<a name="line.92"></a>
-<span class="sourceLineNo">093</span> private static final Logger LOG = LoggerFactory.getLogger(SplitTableRegionProcedure.class);<a name="line.93"></a>
-<span class="sourceLineNo">094</span> private Boolean traceEnabled = null;<a name="line.94"></a>
-<span class="sourceLineNo">095</span> private RegionInfo daughter_1_RI;<a name="line.95"></a>
-<span class="sourceLineNo">096</span> private RegionInfo daughter_2_RI;<a name="line.96"></a>
-<span class="sourceLineNo">097</span> private byte[] bestSplitRow;<a name="line.97"></a>
-<span class="sourceLineNo">098</span> private RegionSplitPolicy splitPolicy;<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span> public SplitTableRegionProcedure() {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> // Required by the Procedure framework to create the procedure on replay<a name="line.101"></a>
-<span class="sourceLineNo">102</span> }<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> public SplitTableRegionProcedure(final MasterProcedureEnv env,<a name="line.104"></a>
-<span class="sourceLineNo">105</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> super(env, regionToSplit);<a name="line.106"></a>
-<span class="sourceLineNo">107</span> preflightChecks(env, true);<a name="line.107"></a>
-<span class="sourceLineNo">108</span> // When procedure goes to run in its prepare step, it also does these checkOnline checks. Here<a name="line.108"></a>
-<span class="sourceLineNo">109</span> // we fail-fast on construction. There it skips the split with just a warning.<a name="line.109"></a>
-<span class="sourceLineNo">110</span> checkOnline(env, regionToSplit);<a name="line.110"></a>
-<span class="sourceLineNo">111</span> this.bestSplitRow = splitRow;<a name="line.111"></a>
-<span class="sourceLineNo">112</span> checkSplittable(env, regionToSplit, bestSplitRow);<a name="line.112"></a>
-<span class="sourceLineNo">113</span> final TableName table = regionToSplit.getTable();<a name="line.113"></a>
-<span class="sourceLineNo">114</span> final long rid = getDaughterRegionIdTimestamp(regionToSplit);<a name="line.114"></a>
-<span class="sourceLineNo">115</span> this.daughter_1_RI = RegionInfoBuilder.newBuilder(table)<a name="line.115"></a>
-<span class="sourceLineNo">116</span> .setStartKey(regionToSplit.getStartKey())<a name="line.116"></a>
-<span class="sourceLineNo">117</span> .setEndKey(bestSplitRow)<a name="line.117"></a>
-<span class="sourceLineNo">118</span> .setSplit(false)<a name="line.118"></a>
-<span class="sourceLineNo">119</span> .setRegionId(rid)<a name="line.119"></a>
-<span class="sourceLineNo">120</span> .build();<a name="line.120"></a>
-<span class="sourceLineNo">121</span> this.daughter_2_RI = RegionInfoBuilder.newBuilder(table)<a name="line.121"></a>
-<span class="sourceLineNo">122</span> .setStartKey(bestSplitRow)<a name="line.122"></a>
-<span class="sourceLineNo">123</span> .setEndKey(regionToSplit.getEndKey())<a name="line.123"></a>
-<span class="sourceLineNo">124</span> .setSplit(false)<a name="line.124"></a>
-<span class="sourceLineNo">125</span> .setRegionId(rid)<a name="line.125"></a>
-<span class="sourceLineNo">126</span> .build();<a name="line.126"></a>
-<span class="sourceLineNo">127</span> TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.127"></a>
-<span class="sourceLineNo">128</span> if(htd.getRegionSplitPolicyClassName() != null) {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> // Since we don't have region reference here, creating the split policy instance without it.<a name="line.129"></a>
-<span class="sourceLineNo">130</span> // This can be used to invoke methods which don't require Region reference. This instantiation<a name="line.130"></a>
-<span class="sourceLineNo">131</span> // of a class on Master-side though it only makes sense on the RegionServer-side is<a name="line.131"></a>
-<span class="sourceLineNo">132</span> // for Phoenix Local Indexing. Refer HBASE-12583 for more information.<a name="line.132"></a>
-<span class="sourceLineNo">133</span> Class<? extends RegionSplitPolicy> clazz =<a name="line.133"></a>
-<span class="sourceLineNo">134</span> RegionSplitPolicy.getSplitPolicyClass(htd, env.getMasterConfiguration());<a name="line.134"></a>
-<span class="sourceLineNo">135</span> this.splitPolicy = ReflectionUtils.newInstance(clazz, env.getMasterConfiguration());<a name="line.135"></a>
-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span> }<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> * Check whether the region is splittable<a name="line.140"></a>
-<span class="sourceLineNo">141</span> * @param env MasterProcedureEnv<a name="line.141"></a>
-<span class="sourceLineNo">142</span> * @param regionToSplit parent Region to be split<a name="line.142"></a>
-<span class="sourceLineNo">143</span> * @param splitRow if splitRow is not specified, will first try to get bestSplitRow from RS<a name="line.143"></a>
-<span class="sourceLineNo">144</span> * @throws IOException<a name="line.144"></a>
-<span class="sourceLineNo">145</span> */<a name="line.145"></a>
-<span class="sourceLineNo">146</span> private void checkSplittable(final MasterProcedureEnv env,<a name="line.146"></a>
-<span class="sourceLineNo">147</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> // Ask the remote RS if this region is splittable.<a name="line.148"></a>
-<span class="sourceLineNo">149</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.149"></a>
-<span class="sourceLineNo">150</span> if(regionToSplit.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.150"></a>
-<span class="sourceLineNo">151</span> throw new IllegalArgumentException ("Can't invoke split on non-default regions directly");<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span> RegionStateNode node =<a name="line.153"></a>
-<span class="sourceLineNo">154</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.154"></a>
-<span class="sourceLineNo">155</span> IOException splittableCheckIOE = null;<a name="line.155"></a>
-<span class="sourceLineNo">156</span> boolean splittable = false;<a name="line.156"></a>
-<span class="sourceLineNo">157</span> if (node != null) {<a name="line.157"></a>
-<span class="sourceLineNo">158</span> try {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> if (bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.159"></a>
-<span class="sourceLineNo">160</span> LOG<a name="line.160"></a>
-<span class="sourceLineNo">161</span> .info("splitKey isn't explicitly specified, will try to find a best split key from RS");<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span> // Always set bestSplitRow request as true here,<a name="line.163"></a>
-<span class="sourceLineNo">164</span> // need to call Region#checkSplit to check it splittable or not<a name="line.164"></a>
-<span class="sourceLineNo">165</span> GetRegionInfoResponse response = AssignmentManagerUtil.getRegionInfoResponse(env,<a name="line.165"></a>
-<span class="sourceLineNo">166</span> node.getRegionLocation(), node.getRegionInfo(), true);<a name="line.166"></a>
-<span class="sourceLineNo">167</span> if(bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.167"></a>
-<span class="sourceLineNo">168</span> bestSplitRow = response.hasBestSplitRow() ? response.getBestSplitRow().toByteArray() : null;<a name="line.168"></a>
-<span class="sourceLineNo">169</span> }<a name="line.169"></a>
-<span class="sourceLineNo">170</span> splittable = response.hasSplittable() && response.getSplittable();<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span> if (LOG.isDebugEnabled()) {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> LOG.debug("Splittable=" + splittable + " " + node.toShortString());<a name="line.173"></a>
-<span class="sourceLineNo">174</span> }<a name="line.174"></a>
-<span class="sourceLineNo">175</span> } catch (IOException e) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> splittableCheckIOE = e;<a name="line.176"></a>
-<span class="sourceLineNo">177</span> }<a name="line.177"></a>
-<span class="sourceLineNo">178</span> }<a name="line.178"></a>
-<span class="sourceLineNo">179</span><a name="line.179"></a>
-<span class="sourceLineNo">180</span> if (!splittable) {<a name="line.180"></a>
-<span class="sourceLineNo">181</span> IOException e =<a name="line.181"></a>
-<span class="sourceLineNo">182</span> new DoNotRetryIOException(regionToSplit.getShortNameToLog() + " NOT splittable");<a name="line.182"></a>
-<span class="sourceLineNo">183</span> if (splittableCheckIOE != null) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> e.initCause(splittableCheckIOE);<a name="line.184"></a>
-<span class="sourceLineNo">185</span> }<a name="line.185"></a>
-<span class="sourceLineNo">186</span> throw e;<a name="line.186"></a>
-<span class="sourceLineNo">187</span> }<a name="line.187"></a>
-<span class="sourceLineNo">188</span><a name="line.188"></a>
-<span class="sourceLineNo">189</span> if (bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> throw new DoNotRetryIOException("Region not splittable because bestSplitPoint = null, " +<a name="line.190"></a>
-<span class="sourceLineNo">191</span> "maybe table is too small for auto split. For force split, try specifying split row");<a name="line.191"></a>
-<span class="sourceLineNo">192</span> }<a name="line.192"></a>
-<span class="sourceLineNo">193</span><a name="line.193"></a>
-<span class="sourceLineNo">194</span> if (Bytes.equals(regionToSplit.getStartKey(), bestSplitRow)) {<a name="line.194"></a>
-<span class="sourceLineNo">195</span> throw new DoNotRetryIOException(<a name="line.195"></a>
-<span class="sourceLineNo">196</span> "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<a name="line.196"></a>
-<span class="sourceLineNo">197</span> }<a name="line.197"></a>
-<span class="sourceLineNo">198</span><a name="line.198"></a>
-<span class="sourceLineNo">199</span> if (!regionToSplit.containsRow(bestSplitRow)) {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> throw new DoNotRetryIOException("Split row is not inside region key range splitKey:" +<a name="line.200"></a>
-<span class="sourceLineNo">201</span> Bytes.toStringBinary(splitRow) + " region: " + regionToSplit);<a name="line.201"></a>
-<span class="sourceLineNo">202</span> }<a name="line.202"></a>
-<span class="sourceLineNo">203</span> }<a name="line.203"></a>
-<span class="sourceLineNo">204</span><a name="line.204"></a>
-<span class="sourceLineNo">205</span> /**<a name="line.205"></a>
-<span class="sourceLineNo">206</span> * Calculate daughter regionid to use.<a name="line.206"></a>
-<span class="sourceLineNo">207</span> * @param hri Parent {@link RegionInfo}<a name="line.207"></a>
-<span class="sourceLineNo">208</span> * @return Daughter region id (timestamp) to use.<a name="line.208"></a>
-<span class="sourceLineNo">209</span> */<a name="line.209"></a>
-<span class="sourceLineNo">210</span> private static long getDaughterRegionIdTimestamp(final RegionInfo hri) {<a name="line.210"></a>
-<span class="sourceLineNo">211</span> long rid = EnvironmentEdgeManager.currentTime();<a name="line.211"></a>
-<span class="sourceLineNo">212</span> // Regionid is timestamp. Can't be less than that of parent else will insert<a name="line.212"></a>
-<span class="sourceLineNo">213</span> // at wrong location in hbase:meta (See HBASE-710).<a name="line.213"></a>
-<span class="sourceLineNo">214</span> if (rid < hri.getRegionId()) {<a name="line.214"></a>
-<span class="sourceLineNo">215</span> LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.215"></a>
-<span class="sourceLineNo">216</span> " but current time here is " + rid);<a name="line.216"></a>
-<span class="sourceLineNo">217</span> rid = hri.getRegionId() + 1;<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span> return rid;<a name="line.219"></a>
-<span class="sourceLineNo">220</span> }<a name="line.220"></a>
-<span class="sourceLineNo">221</span><a name="line.221"></a>
-<span class="sourceLineNo">222</span> private void removeNonDefaultReplicas(MasterProcedureEnv env) throws IOException {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> AssignmentManagerUtil.removeNonDefaultReplicas(env, Stream.of(getParentRegion()),<a name="line.223"></a>
-<span class="sourceLineNo">224</span> getRegionReplication(env));<a name="line.224"></a>
-<span class="sourceLineNo">225</span> }<a name="line.225"></a>
-<span class="sourceLineNo">226</span><a name="line.226"></a>
-<span class="sourceLineNo">227</span> private void checkClosedRegions(MasterProcedureEnv env) throws IOException {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> // theoretically this should not happen any more after we use TRSP, but anyway let's add a check<a name="line.228"></a>
-<span class="sourceLineNo">229</span> // here<a name="line.229"></a>
-<span class="sourceLineNo">230</span> AssignmentManagerUtil.checkClosedRegion(env, getParentRegion());<a name="line.230"></a>
-<span class="sourceLineNo">231</span> }<a name="line.231"></a>
-<span class="sourceLineNo">232</span><a name="line.232"></a>
-<span class="sourceLineNo">233</span> @Override<a name="line.233"></a>
-<span class="sourceLineNo">234</span> protected Flow executeFromState(MasterProcedureEnv env, SplitTableRegionState state)<a name="line.234"></a>
-<span class="sourceLineNo">235</span> throws InterruptedException {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> LOG.trace("{} execute state={}", this, state);<a name="line.236"></a>
-<span class="sourceLineNo">237</span><a name="line.237"></a>
-<span class="sourceLineNo">238</span> try {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> switch (state) {<a name="line.239"></a>
-<span class="sourceLineNo">240</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.240"></a>
-<span class="sourceLineNo">241</span> if (prepareSplitRegion(env)) {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> break;<a name="line.243"></a>
-<span class="sourceLineNo">244</span> } else {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> return Flow.NO_MORE_STATE;<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.247"></a>
-<span class="sourceLineNo">248</span> preSplitRegion(env);<a name="line.248"></a>
-<span class="sourceLineNo">249</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.249"></a>
-<span class="sourceLineNo">250</span> break;<a name="line.250"></a>
-<span class="sourceLineNo">251</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.251"></a>
-<span class="sourceLineNo">252</span> addChildProcedure(createUnassignProcedures(env));<a name="line.252"></a>
-<span class="sourceLineNo">253</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS);<a name="line.253"></a>
-<span class="sourceLineNo">254</span> break;<a name="line.254"></a>
-<span class="sourceLineNo">255</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.255"></a>
-<span class="sourceLineNo">256</span> checkClosedRegions(env);<a name="line.256"></a>
-<span class="sourceLineNo">257</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.257"></a>
-<span class="sourceLineNo">258</span> break;<a name="line.258"></a>
-<span class="sourceLineNo">259</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.259"></a>
-<span class="sourceLineNo">260</span> removeNonDefaultReplicas(env);<a name="line.260"></a>
-<span class="sourceLineNo">261</span> createDaughterRegions(env);<a name="line.261"></a>
-<span class="sourceLineNo">262</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE);<a name="line.262"></a>
-<span class="sourceLineNo">263</span> break;<a name="line.263"></a>
-<span class="sourceLineNo">264</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.264"></a>
-<span class="sourceLineNo">265</span> writeMaxSequenceIdFile(env);<a name="line.265"></a>
-<span class="sourceLineNo">266</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META);<a name="line.266"></a>
-<span class="sourceLineNo">267</span> break;<a name="line.267"></a>
-<span class="sourceLineNo">268</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.268"></a>
-<span class="sourceLineNo">269</span> preSplitRegionBeforeMETA(env);<a name="line.269"></a>
-<span class="sourceLineNo">270</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.270"></a>
-<span class="sourceLineNo">271</span> break;<a name="line.271"></a>
-<span class="sourceLineNo">272</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.272"></a>
-<span class="sourceLineNo">273</span> updateMeta(env);<a name="line.273"></a>
-<span class="sourceLineNo">274</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META);<a name="line.274"></a>
-<span class="sourceLineNo">275</span> break;<a name="line.275"></a>
-<span class="sourceLineNo">276</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.276"></a>
-<span class="sourceLineNo">277</span> preSplitRegionAfterMETA(env);<a name="line.277"></a>
-<span class="sourceLineNo">278</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.278"></a>
-<span class="sourceLineNo">279</span> break;<a name="line.279"></a>
-<span class="sourceLineNo">280</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.280"></a>
-<span class="sourceLineNo">281</span> addChildProcedure(createAssignProcedures(env));<a name="line.281"></a>
-<span class="sourceLineNo">282</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.282"></a>
-<span class="sourceLineNo">283</span> break;<a name="line.283"></a>
-<span class="sourceLineNo">284</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.284"></a>
-<span class="sourceLineNo">285</span> postSplitRegion(env);<a name="line.285"></a>
-<span class="sourceLineNo">286</span> return Flow.NO_MORE_STATE;<a name="line.286"></a>
-<span class="sourceLineNo">287</span> default:<a name="line.287"></a>
-<span class="sourceLineNo">288</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.288"></a>
-<span class="sourceLineNo">289</span> }<a name="line.289"></a>
-<span class="sourceLineNo">290</span> } catch (IOException e) {<a name="line.290"></a>
-<span class="sourceLineNo">291</span> String msg = "Splitting " + getParentRegion().getEncodedName() + ", " + this;<a name="line.291"></a>
-<span class="sourceLineNo">292</span> if (!isRollbackSupported(state)) {<a name="line.292"></a>
-<span class="sourceLineNo">293</span> // We reach a state that cannot be rolled back. We just need to keep retrying.<a name="line.293"></a>
-<span class="sourceLineNo">294</span> LOG.warn(msg, e);<a name="line.294"></a>
-<span class="sourceLineNo">295</span> } else {<a name="line.295"></a>
-<span class="sourceLineNo">296</span> LOG.error(msg, e);<a name="line.296"></a>
-<span class="sourceLineNo">297</span> setFailure("master-split-regions", e);<a name="line.297"></a>
-<span class="sourceLineNo">298</span> }<a name="line.298"></a>
-<span class="sourceLineNo">299</span> }<a name="line.299"></a>
-<span class="sourceLineNo">300</span> // if split fails, need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.300"></a>
-<span class="sourceLineNo">301</span> return Flow.HAS_MORE_STATE;<a name="line.301"></a>
-<span class="sourceLineNo">302</span> }<a name="line.302"></a>
-<span class="sourceLineNo">303</span><a name="line.303"></a>
-<span class="sourceLineNo">304</span> /**<a name="line.304"></a>
-<span class="sourceLineNo">305</span> * To rollback {@link SplitTableRegionProcedure}, an AssignProcedure is asynchronously<a name="line.305"></a>
-<span class="sourceLineNo">306</span> * submitted for parent region to be split (rollback doesn't wait on the completion of the<a name="line.306"></a>
-<span class="sourceLineNo">307</span> * AssignProcedure) . This can be improved by changing rollback() to support sub-procedures.<a name="line.307"></a>
-<span class="sourceLineNo">308</span> * See HBASE-19851 for details.<a name="line.308"></a>
-<span class="sourceLineNo">309</span> */<a name="line.309"></a>
-<span class="sourceLineNo">310</span> @Override<a name="line.310"></a>
-<span class="sourceLineNo">311</span> protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.311"></a>
-<span class="sourceLineNo">312</span> throws IOException, InterruptedException {<a name="line.312"></a>
-<span class="sourceLineNo">313</span> if (isTraceEnabled()) {<a name="line.313"></a>
-<span class="sourceLineNo">314</span> LOG.trace(this + " rollback state=" + state);<a name="line.314"></a>
-<span class="sourceLineNo">315</span> }<a name="line.315"></a>
-<span class="sourceLineNo">316</span><a name="line.316"></a>
-<span class="sourceLineNo">317</span> try {<a name="line.317"></a>
-<span class="sourceLineNo">318</span> switch (state) {<a name="line.318"></a>
-<span class="sourceLineNo">319</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.319"></a>
-<span class="sourceLineNo">320</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.320"></a>
-<span class="sourceLineNo">321</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.321"></a>
-<span class="sourceLineNo">322</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.322"></a>
-<span class="sourceLineNo">323</span> // PONR<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> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.325"></a>
-<span class="sourceLineNo">326</span> break;<a name="line.326"></a>
-<span class="sourceLineNo">327</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.327"></a>
-<span class="sourceLineNo">328</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.328"></a>
-<span class="sourceLineNo">329</span> // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.329"></a>
-<span class="sourceLineNo">330</span> break;<a name="line.330"></a>
-<span class="sourceLineNo">331</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.331"></a>
-<span class="sourceLineNo">332</span> // Doing nothing, in SPLIT_TABLE_REGION_CLOSE_PARENT_REGION,<a name="line.332"></a>
-<span class="sourceLineNo">333</span> // we will bring parent region online<a name="line.333"></a>
-<span class="sourceLineNo">334</span> break;<a name="line.334"></a>
-<span class="sourceLineNo">335</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.335"></a>
-<span class="sourceLineNo">336</span> openParentRegion(env);<a name="line.336"></a>
-<span class="sourceLineNo">337</span> break;<a name="line.337"></a>
-<span class="sourceLineNo">338</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.338"></a>
-<span class="sourceLineNo">339</span> postRollBackSplitRegion(env);<a name="line.339"></a>
-<span class="sourceLineNo">340</span> break;<a name="line.340"></a>
-<span class="sourceLineNo">341</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.341"></a>
-<span class="sourceLineNo">342</span> break; // nothing to do<a name="line.342"></a>
-<span class="sourceLineNo">343</span> default:<a name="line.343"></a>
-<span class="sourceLineNo">344</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.344"></a>
-<span class="sourceLineNo">345</span> }<a name="line.345"></a>
-<span class="sourceLineNo">346</span> } catch (IOException e) {<a name="line.346"></a>
-<span class="sourceLineNo">347</span> // This will be retried. Unless there is a bug in the code,<a name="line.347"></a>
-<span class="sourceLineNo">348</span> // this should be just a "temporary error" (e.g. network down)<a name="line.348"></a>
-<span class="sourceLineNo">349</span> LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.349"></a>
-<span class="sourceLineNo">350</span> " for splitting the region "<a name="line.350"></a>
-<span class="sourceLineNo">351</span> + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.351"></a>
-<span class="sourceLineNo">352</span> throw e;<a name="line.352"></a>
-<span class="sourceLineNo">353</span> }<a name="line.353"></a>
-<span class="sourceLineNo">354</span> }<a name="line.354"></a>
-<span class="sourceLineNo">355</span><a name="line.355"></a>
-<span class="sourceLineNo">356</span> /*<a name="line.356"></a>
-<span class="sourceLineNo">357</span> * Check whether we are in the state that can be rollback<a name="line.357"></a>
-<span class="sourceLineNo">358</span> */<a name="line.358"></a>
-<span class="sourceLineNo">359</span> @Override<a name="line.359"></a>
-<span class="sourceLineNo">360</span> protected boolean isRollbackSupported(final SplitTableRegionState state) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span> switch (state) {<a name="line.361"></a>
-<span class="sourceLineNo">362</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.362"></a>
-<span class="sourceLineNo">363</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.363"></a>
-<span class="sourceLineNo">364</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.364"></a>
-<span class="sourceLineNo">365</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.365"></a>
-<span class="sourceLineNo">366</span> // It is not safe to rollback if we reach to these states.<a name="line.366"></a>
-<span class="sourceLineNo">367</span> return false;<a name="line.367"></a>
-<span class="sourceLineNo">368</span> default:<a name="line.368"></a>
-<span class="sourceLineNo">369</span> break;<a name="line.369"></a>
-<span class="sourceLineNo">370</span> }<a name="line.370"></a>
-<span class="sourceLineNo">371</span> return true;<a name="line.371"></a>
-<span class="sourceLineNo">372</span> }<a name="line.372"></a>
-<span class="sourceLineNo">373</span><a name="line.373"></a>
-<span class="sourceLineNo">374</span> @Override<a name="line.374"></a>
-<span class="sourceLineNo">375</span> protected SplitTableRegionState getState(final int stateId) {<a name="line.375"></a>
-<span class="sourceLineNo">376</span> return SplitTableRegionState.forNumber(stateId);<a name="line.376"></a>
-<span class="sourceLineNo">377</span> }<a name="line.377"></a>
-<span class="sourceLineNo">378</span><a name="line.378"></a>
-<span class="sourceLineNo">379</span> @Override<a name="line.379"></a>
-<span class="sourceLineNo">380</span> protected int getStateId(final SplitTableRegionState state) {<a name="line.380"></a>
-<span class="sourceLineNo">381</span> return state.getNumber();<a name="line.381"></a>
-<span class="sourceLineNo">382</span> }<a name="line.382"></a>
-<span class="sourceLineNo">383</span><a name="line.383"></a>
-<span class="sourceLineNo">384</span> @Override<a name="line.384"></a>
-<span class="sourceLineNo">385</span> protected SplitTableRegionState getInitialState() {<a name="line.385"></a>
-<span class="sourceLineNo">386</span> return SplitTableRegionState.SPLIT_TABLE_REGION_PREPARE;<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> @Override<a name="line.389"></a>
-<span class="sourceLineNo">390</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.390"></a>
-<span class="sourceLineNo">391</span> throws IOException {<a name="line.391"></a>
-<span class="sourceLineNo">392</span> super.serializeStateData(serializer);<a name="line.392"></a>
-<span class="sourceLineNo">393</span><a name="line.393"></a>
-<span class="sourceLineNo">394</span> final MasterProcedureProtos.SplitTableRegionStateData.Builder splitTableRegionMsg =<a name="line.394"></a>
-<span class="sourceLineNo">395</span> MasterProcedureProtos.SplitTableRegionStateData.newBuilder()<a name="line.395"></a>
-<span class="sourceLineNo">396</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.396"></a>
-<span class="sourceLineNo">397</span> .setParentRegionInfo(ProtobufUtil.toRegionInfo(getRegion()))<a name="line.397"></a>
-<span class="sourceLineNo">398</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_1_RI))<a name="line.398"></a>
-<span class="sourceLineNo">399</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_2_RI));<a name="line.399"></a>
-<span class="sourceLineNo">400</span> serializer.serialize(splitTableRegionMsg.build());<a name="line.400"></a>
-<span class="sourceLineNo">401</span> }<a name="line.401"></a>
-<span class="sourceLineNo">402</span><a name="line.402"></a>
-<span class="sourceLineNo">403</span> @Override<a name="line.403"></a>
-<span class="sourceLineNo">404</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.404"></a>
-<span class="sourceLineNo">405</span> throws IOException {<a name="line.405"></a>
-<span class="sourceLineNo">406</span> super.deserializeStateData(serializer);<a name="line.406"></a>
-<span class="sourceLineNo">407</span><a name="line.407"></a>
-<span class="sourceLineNo">408</span> final MasterProcedureProtos.SplitTableRegionStateData splitTableRegionsMsg =<a name="line.408"></a>
-<span class="sourceLineNo">409</span> serializer.deserialize(MasterProcedureProtos.SplitTableRegionStateData.class);<a name="line.409"></a>
-<span class="sourceLineNo">410</span> setUser(MasterProcedureUtil.toUserInfo(splitTableRegionsMsg.getUserInfo()));<a name="line.410"></a>
-<span class="sourceLineNo">411</span> setRegion(ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getParentRegionInfo()));<a name="line.411"></a>
-<span class="sourceLineNo">412</span> assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.412"></a>
-<span class="sourceLineNo">413</span> daughter_1_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(0));<a name="line.413"></a>
-<span class="sourceLineNo">414</span> daughter_2_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(1));<a name="line.414"></a>
-<span class="sourceLineNo">415</span> }<a name="line.415"></a>
-<span class="sourceLineNo">416</span><a name="line.416"></a>
-<span class="sourceLineNo">417</span> @Override<a name="line.417"></a>
-<span class="sourceLineNo">418</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.418"></a>
-<span class="sourceLineNo">419</span> sb.append(getClass().getSimpleName());<a name="line.419"></a>
-<span class="sourceLineNo">420</span> sb.append(" table=");<a name="line.420"></a>
-<span class="sourceLineNo">421</span> sb.append(getTableName());<a name="line.421"></a>
-<span class="sourceLineNo">422</span> sb.append(", parent=");<a name="line.422"></a>
-<span class="sourceLineNo">423</span> sb.append(getParentRegion().getShortNameToLog());<a name="line.423"></a>
-<span class="sourceLineNo">424</span> sb.append(", daughterA=");<a name="line.424"></a>
-<span class="sourceLineNo">425</span> sb.append(daughter_1_RI.getShortNameToLog());<a name="line.425"></a>
-<span class="sourceLineNo">426</span> sb.append(", daughterB=");<a name="line.426"></a>
-<span class="sourceLineNo">427</span> sb.append(daughter_2_RI.getShortNameToLog());<a name="line.427"></a>
-<span class="sourceLineNo">428</span> }<a name="line.428"></a>
-<span class="sourceLineNo">429</span><a name="line.429"></a>
-<span class="sourceLineNo">430</span> private RegionInfo getParentRegion() {<a name="line.430"></a>
-<span class="sourceLineNo">431</span> return getRegion();<a name="line.431"></a>
-<span class="sourceLineNo">432</span> }<a name="line.432"></a>
-<span class="sourceLineNo">433</span><a name="line.433"></a>
-<span class="sourceLineNo">434</span> @Override<a name="line.434"></a>
-<span class="sourceLineNo">435</span> public TableOperationType getTableOperationType() {<a name="line.435"></a>
-<span class="sourceLineNo">436</span> return TableOperationType.REGION_SPLIT;<a name="line.436"></a>
-<span class="sourceLineNo">437</span> }<a name="line.437"></a>
-<span class="sourceLineNo">438</span><a name="line.438"></a>
-<span class="sourceLineNo">439</span> @Override<a name="line.439"></a>
-<span class="sourceLineNo">440</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.440"></a>
-<span class="sourceLineNo">441</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getSplitProcMetrics();<a name="line.441"></a>
-<span class="sourceLineNo">442</span> }<a name="line.442"></a>
-<span class="sourceLineNo">443</span><a name="line.443"></a>
-<span class="sourceLineNo">444</span> private byte[] getSplitRow() {<a name="line.444"></a>
-<span class="sourceLineNo">445</span> return daughter_2_RI.getStartKey();<a name="line.445"></a>
-<span class="sourceLineNo">446</span> }<a name="line.446"></a>
-<span class="sourceLineNo">447</span><a name="line.447"></a>
-<span class="sourceLineNo">448</span> private static final State[] EXPECTED_SPLIT_STATES = new State[] { State.OPEN, State.CLOSED };<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> * Prepare to Split region.<a name="line.451"></a>
-<span class="sourceLineNo">452</span> * @param env MasterProcedureEnv<a name="line.452"></a>
-<span class="sourceLineNo">453</span> */<a name="line.453"></a>
-<span class="sourceLineNo">454</span> @VisibleForTesting<a name="line.454"></a>
-<span class="sourceLineNo">455</span> public boolean prepareSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.455"></a>
-<span class="sourceLineNo">456</span> // Check whether the region is splittable<a name="line.456"></a>
-<span class="sourceLineNo">457</span> RegionStateNode node =<a name="line.457"></a>
-<span class="sourceLineNo">458</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.458"></a>
-<span class="sourceLineNo">459</span><a name="line.459"></a>
-<span class="sourceLineNo">460</span> if (node == null) {<a name="line.460"></a>
-<span class="sourceLineNo">461</span> throw new UnknownRegionException(getParentRegion().getRegionNameAsString());<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> RegionInfo parentHRI = node.getRegionInfo();<a name="line.464"></a>
-<span class="sourceLineNo">465</span> if (parentHRI == null) {<a name="line.465"></a>
-<span class="sourceLineNo">466</span> LOG.info("Unsplittable; parent region is null; node={}", node);<a name="line.466"></a>
-<span class="sourceLineNo">467</span> return false;<a name="line.467"></a>
-<span class="sourceLineNo">468</span> }<a name="line.468"></a>
-<span class="sourceLineNo">469</span> // Lookup the parent HRI state from the AM, which has the latest updated info.<a name="line.469"></a>
-<span class="sourceLineNo">470</span> // Protect against the case where concurrent SPLIT requests came in and succeeded<a name="line.470"></a>
-<span class="sourceLineNo">471</span> // just before us.<a name="line.471"></a>
-<span class="sourceLineNo">472</span> if (node.isInState(State.SPLIT)) {<a name="line.472"></a>
-<span class="sourceLineNo">473</span> LOG.info("Split of " + parentHRI + " skipped; state is already SPLIT");<a name="line.473"></a>
-<span class="sourceLineNo">474</span> return false;<a name="line.474"></a>
-<span class="sourceLineNo">475</span> }<a name="line.475"></a>
-<span class="sourceLineNo">476</span> if (parentHRI.isSplit() || parentHRI.isOffline()) {<a name="line.476"></a>
-<span class="sourceLineNo">477</span> LOG.info("Split of " + parentHRI + " skipped because offline/split.");<a name="line.477"></a>
-<span class="sourceLineNo">478</span> return false;<a name="line.478"></a>
-<span class="sourceLineNo">479</span> }<a name="line.479"></a>
-<span class="sourceLineNo">480</span><a name="line.480"></a>
-<span class="sourceLineNo">481</span> // expected parent to be online or closed<a name="line.481"></a>
-<span class="sourceLineNo">482</span> if (!node.isInState(EXPECTED_SPLIT_STATES)) {<a name="line.482"></a>
-<span class="sourceLineNo">483</span> // We may have SPLIT already?<a name="line.483"></a>
-<span class="sourceLineNo">484</span> setFailure(new IOException("Split " + parentHRI.getRegionNameAsString() +<a name="line.484"></a>
-<span class="sourceLineNo">485</span> " FAILED because state=" + node.getState() + "; expected " +<a name="line.485"></a>
-<span class="sourceLineNo">486</span> Arrays.toString(EXPECTED_SPLIT_STATES)));<a name="line.486"></a>
-<span class="sourceLineNo">487</span> return false;<a name="line.487"></a>
-<span class="sourceLineNo">488</span> }<a name="line.488"></a>
-<span class="sourceLineNo">489</span><a name="line.489"></a>
-<span class="sourceLineNo">490</span> // Since we have the lock and the master is coordinating the operation<a name="line.490"></a>
-<span class="sourceLineNo">491</span> // we are always able to split the region<a name="line.491"></a>
-<span class="sourceLineNo">492</span> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.SPLIT)) {<a name="line.492"></a>
-<span class="sourceLineNo">493</span> LOG.warn("pid=" + getProcId() + " split switch is off! skip split of " + parentHRI);<a name="line.493"></a>
-<span class="sourceLineNo">494</span> setFailure(new IOException("Split region " + parentHRI.getRegionNameAsString() +<a name="line.494"></a>
-<span class="sourceLineNo">495</span> " failed due to split switch off"));<a name="line.495"></a>
-<span class="sourceLineNo">496</span> return false;<a name="line.496"></a>
-<span class="sourceLineNo">497</span> }<a name="line.497"></a>
-<span class="sourceLineNo">498</span><a name="line.498"></a>
-<span class="sourceLineNo">499</span> // set node state as SPLITTING<a name="line.499"></a>
-<span class="sourceLineNo">500</span> node.setState(State.SPLITTING);<a name="line.500"></a>
-<span class="sourceLineNo">501</span><a name="line.501"></a>
-<span class="sourceLineNo">502</span> return true;<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> /**<a name="line.505"></a>
-<span class="sourceLineNo">506</span> * Action before splitting region in a table.<a name="line.506"></a>
-<span class="sourceLineNo">507</span> * @param env MasterProcedureEnv<a name="line.507"></a>
-<span class="sourceLineNo">508</span> */<a name="line.508"></a>
-<span class="sourceLineNo">509</span> private void preSplitRegion(final MasterProcedureEnv env)<a name="line.509"></a>
-<span class="sourceLineNo">510</span> throws IOException, InterruptedException {<a name="line.510"></a>
-<span class="sourceLineNo">511</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.511"></a>
-<span class="sourceLineNo">512</span> if (cpHost != null) {<a name="line.512"></a>
-<span class="sourceLineNo">513</span> cpHost.preSplitRegionAction(getTableName(), getSplitRow(), getUser());<a name="line.513"></a>
-<span class="sourceLineNo">514</span> }<a name="line.514"></a>
-<span class="sourceLineNo">515</span><a name="line.515"></a>
-<span class="sourceLineNo">516</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.516"></a>
-<span class="sourceLineNo">517</span> // Notify QuotaManager and RegionNormalizer<a name="line.517"></a>
-<span class="sourceLineNo">518</span> try {<a name="line.518"></a>
-<span class="sourceLineNo">519</span> env.getMasterServices().getMasterQuotaManager().onRegionSplit(this.getParentRegion());<a name="line.519"></a>
-<span class="sourceLineNo">520</span> } catch (QuotaExceededException e) {<a name="line.520"></a>
-<span class="sourceLineNo">521</span> env.getMasterServices().getRegionNormalizer().planSkipped(this.getParentRegion(),<a name="line.521"></a>
-<span class="sourceLineNo">522</span> NormalizationPlan.PlanType.SPLIT);<a name="line.522"></a>
-<span class="sourceLineNo">523</span> throw e;<a name="line.523"></a>
-<span class="sourceLineNo">524</span> }<a name="line.524"></a>
-<span class="sourceLineNo">525</span> }<a name="line.525"></a>
-<span class="sourceLineNo">526</span><a name="line.526"></a>
-<span class="sourceLineNo">527</span> /**<a name="line.527"></a>
-<span class="sourceLineNo">528</span> * Action after rollback a split table region action.<a name="line.528"></a>
-<span class="sourceLineNo">529</span> * @param env MasterProcedureEnv<a name="line.529"></a>
-<span class="sourceLineNo">530</span> */<a name="line.530"></a>
-<span class="sourceLineNo">531</span> private void postRollBackSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.531"></a>
-<span class="sourceLineNo">532</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.532"></a>
-<span class="sourceLineNo">533</span> if (cpHost != null) {<a name="line.533"></a>
-<span class="sourceLineNo">534</span> cpHost.postRollBackSplitRegionAction(getUser());<a name="line.534"></a>
-<span class="sourceLineNo">535</span> }<a name="line.535"></a>
-<span class="sourceLineNo">536</span> }<a name="line.536"></a>
-<span class="sourceLineNo">537</span><a name="line.537"></a>
-<span class="sourceLineNo">538</span> /**<a name="line.538"></a>
-<span class="sourceLineNo">539</span> * Rollback close parent region<a name="line.539"></a>
-<span class="sourceLineNo">540</span> */<a name="line.540"></a>
-<span class="sourceLineNo">541</span> private void openParentRegion(MasterProcedureEnv env) throws IOException {<a name="line.541"></a>
-<span class="sourceLineNo">542</span> AssignmentManagerUtil.reopenRegionsForRollback(env, Stream.of(getParentRegion()),<a name="line.542"></a>
-<span class="sourceLineNo">543</span> getRegionReplication(env), getParentRegionServerName(env));<a name="line.543"></a>
-<span class="sourceLineNo">544</span> }<a name="line.544"></a>
-<span class="sourceLineNo">545</span><a name="line.545"></a>
-<span class="sourceLineNo">546</span> /**<a name="line.546"></a>
-<span class="sourceLineNo">547</span> * Create daughter regions<a name="line.547"></a>
-<span class="sourceLineNo">548</span> */<a name="line.548"></a>
-<span class="sourceLineNo">549</span> @VisibleForTesting<a name="line.549"></a>
-<span class="sourceLineNo">550</span> public void createDaughterRegions(final MasterProcedureEnv env) throws IOException {<a name="line.550"></a>
-<span class="sourceLineNo">551</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.551"></a>
-<span class="sourceLineNo">552</span> final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), getTableName());<a name="line.552"></a>
-<span class="sourceLineNo">553</span> final FileSystem fs = mfs.getFileSystem();<a name="line.553"></a>
-<span class="sourceLineNo">554</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.554"></a>
-<span class="sourceLineNo">555</span> env.getMasterConfiguration(), fs, tabledir, getParentRegion(), false);<a name="line.555"></a>
-<span class="sourceLineNo">556</span> regionFs.createSplitsDir();<a name="line.556"></a>
-<span class="sourceLineNo">557</span><a name="line.557"></a>
-<span class="sourceLineNo">558</span> Pair<Integer, Integer> expectedReferences = splitStoreFiles(env, regionFs);<a name="line.558"></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.EnvironmentEdgeManager;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.util.ReflectionUtils;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.slf4j.Logger;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.slf4j.LoggerFactory;<a name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SplitTableRegionState;<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span>/**<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * The procedure to split a region in a table.<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * Takes lock on the parent region.<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * It holds the lock for the life of the procedure.<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * <p>Throws exception on construction if determines context hostile to spllt (cluster going<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * down or master is shutting down or table is disabled).</p><a name="line.89"></a>
+<span class="sourceLineNo">090</span> */<a name="line.90"></a>
+<span class="sourceLineNo">091</span>@InterfaceAudience.Private<a name="line.91"></a>
+<span class="sourceLineNo">092</span>public class SplitTableRegionProcedure<a name="line.92"></a>
+<span class="sourceLineNo">093</span> extends AbstractStateMachineRegionProcedure<SplitTableRegionState> {<a name="line.93"></a>
+<span class="sourceLineNo">094</span> private static final Logger LOG = LoggerFactory.getLogger(SplitTableRegionProcedure.class);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> private Boolean traceEnabled = null;<a name="line.95"></a>
+<span class="sourceLineNo">096</span> private RegionInfo daughter_1_RI;<a name="line.96"></a>
+<span class="sourceLineNo">097</span> private RegionInfo daughter_2_RI;<a name="line.97"></a>
+<span class="sourceLineNo">098</span> private byte[] bestSplitRow;<a name="line.98"></a>
+<span class="sourceLineNo">099</span> private RegionSplitPolicy splitPolicy;<a name="line.99"></a>
+<span class="sourceLineNo">100</span><a name="line.100"></a>
+<span class="sourceLineNo">101</span> public SplitTableRegionProcedure() {<a name="line.101"></a>
+<span class="sourceLineNo">102</span> // Required by the Procedure framework to create the procedure on replay<a name="line.102"></a>
+<span class="sourceLineNo">103</span> }<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> public SplitTableRegionProcedure(final MasterProcedureEnv env,<a name="line.105"></a>
+<span class="sourceLineNo">106</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.106"></a>
+<span class="sourceLineNo">107</span> super(env, regionToSplit);<a name="line.107"></a>
+<span class="sourceLineNo">108</span> preflightChecks(env, true);<a name="line.108"></a>
+<span class="sourceLineNo">109</span> // When procedure goes to run in its prepare step, it also does these checkOnline checks. Here<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // we fail-fast on construction. There it skips the split with just a warning.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> checkOnline(env, regionToSplit);<a name="line.111"></a>
+<span class="sourceLineNo">112</span> this.bestSplitRow = splitRow;<a name="line.112"></a>
+<span class="sourceLineNo">113</span> checkSplittable(env, regionToSplit, bestSplitRow);<a name="line.113"></a>
+<span class="sourceLineNo">114</span> final TableName table = regionToSplit.getTable();<a name="line.114"></a>
+<span class="sourceLineNo">115</span> final long rid = getDaughterRegionIdTimestamp(regionToSplit);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> this.daughter_1_RI = RegionInfoBuilder.newBuilder(table)<a name="line.116"></a>
+<span class="sourceLineNo">117</span> .setStartKey(regionToSplit.getStartKey())<a name="line.117"></a>
+<span class="sourceLineNo">118</span> .setEndKey(bestSplitRow)<a name="line.118"></a>
+<span class="sourceLineNo">119</span> .setSplit(false)<a name="line.119"></a>
+<span class="sourceLineNo">120</span> .setRegionId(rid)<a name="line.120"></a>
+<span class="sourceLineNo">121</span> .build();<a name="line.121"></a>
+<span class="sourceLineNo">122</span> this.daughter_2_RI = RegionInfoBuilder.newBuilder(table)<a name="line.122"></a>
+<span class="sourceLineNo">123</span> .setStartKey(bestSplitRow)<a name="line.123"></a>
+<span class="sourceLineNo">124</span> .setEndKey(regionToSplit.getEndKey())<a name="line.124"></a>
+<span class="sourceLineNo">125</span> .setSplit(false)<a name="line.125"></a>
+<span class="sourceLineNo">126</span> .setRegionId(rid)<a name="line.126"></a>
+<span class="sourceLineNo">127</span> .build();<a name="line.127"></a>
+<span class="sourceLineNo">128</span> TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.128"></a>
+<span class="sourceLineNo">129</span> if(htd.getRegionSplitPolicyClassName() != null) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> // Since we don't have region reference here, creating the split policy instance without it.<a name="line.130"></a>
+<span class="sourceLineNo">131</span> // This can be used to invoke methods which don't require Region reference. This instantiation<a name="line.131"></a>
+<span class="sourceLineNo">132</span> // of a class on Master-side though it only makes sense on the RegionServer-side is<a name="line.132"></a>
+<span class="sourceLineNo">133</span> // for Phoenix Local Indexing. Refer HBASE-12583 for more information.<a name="line.133"></a>
+<span class="sourceLineNo">134</span> Class<? extends RegionSplitPolicy> clazz =<a name="line.134"></a>
+<span class="sourceLineNo">135</span> RegionSplitPolicy.getSplitPolicyClass(htd, env.getMasterConfiguration());<a name="line.135"></a>
+<span class="sourceLineNo">136</span> this.splitPolicy = ReflectionUtils.newInstance(clazz, env.getMasterConfiguration());<a name="line.136"></a>
+<span class="sourceLineNo">137</span> }<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> * Check whether the region is splittable<a name="line.141"></a>
+<span class="sourceLineNo">142</span> * @param env MasterProcedureEnv<a name="line.142"></a>
+<span class="sourceLineNo">143</span> * @param regionToSplit parent Region to be split<a name="line.143"></a>
+<span class="sourceLineNo">144</span> * @param splitRow if splitRow is not specified, will first try to get bestSplitRow from RS<a name="line.144"></a>
+<span class="sourceLineNo">145</span> * @throws IOException<a name="line.145"></a>
+<span class="sourceLineNo">146</span> */<a name="line.146"></a>
+<span class="sourceLineNo">147</span> private void checkSplittable(final MasterProcedureEnv env,<a name="line.147"></a>
+<span class="sourceLineNo">148</span> final RegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> // Ask the remote RS if this region is splittable.<a name="line.149"></a>
+<span class="sourceLineNo">150</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.150"></a>
+<span class="sourceLineNo">151</span> if(regionToSplit.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.151"></a>
+<span class="sourceLineNo">152</span> throw new IllegalArgumentException ("Can't invoke split on non-default regions directly");<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span> RegionStateNode node =<a name="line.154"></a>
+<span class="sourceLineNo">155</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.155"></a>
+<span class="sourceLineNo">156</span> IOException splittableCheckIOE = null;<a name="line.156"></a>
+<span class="sourceLineNo">157</span> boolean splittable = false;<a name="line.157"></a>
+<span class="sourceLineNo">158</span> if (node != null) {<a name="line.158"></a>
+<span class="sourceLineNo">159</span> try {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> if (bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span> LOG<a name="line.161"></a>
+<span class="sourceLineNo">162</span> .info("splitKey isn't explicitly specified, will try to find a best split key from RS");<a name="line.162"></a>
+<span class="sourceLineNo">163</span> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span> // Always set bestSplitRow request as true here,<a name="line.164"></a>
+<span class="sourceLineNo">165</span> // need to call Region#checkSplit to check it splittable or not<a name="line.165"></a>
+<span class="sourceLineNo">166</span> GetRegionInfoResponse response = AssignmentManagerUtil.getRegionInfoResponse(env,<a name="line.166"></a>
+<span class="sourceLineNo">167</span> node.getRegionLocation(), node.getRegionInfo(), true);<a name="line.167"></a>
+<span class="sourceLineNo">168</span> if(bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.168"></a>
+<span class="sourceLineNo">169</span> bestSplitRow = response.hasBestSplitRow() ? response.getBestSplitRow().toByteArray() : null;<a name="line.169"></a>
+<span class="sourceLineNo">170</span> }<a name="line.170"></a>
+<span class="sourceLineNo">171</span> splittable = response.hasSplittable() && response.getSplittable();<a name="line.171"></a>
+<span class="sourceLineNo">172</span><a name="line.172"></a>
+<span class="sourceLineNo">173</span> if (LOG.isDebugEnabled()) {<a name="line.173"></a>
+<span class="sourceLineNo">174</span> LOG.debug("Splittable=" + splittable + " " + node.toShortString());<a name="line.174"></a>
+<span class="sourceLineNo">175</span> }<a name="line.175"></a>
+<span class="sourceLineNo">176</span> } catch (IOException e) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> splittableCheckIOE = e;<a name="line.177"></a>
+<span class="sourceLineNo">178</span> }<a name="line.178"></a>
+<span class="sourceLineNo">179</span> }<a name="line.179"></a>
+<span class="sourceLineNo">180</span><a name="line.180"></a>
+<span class="sourceLineNo">181</span> if (!splittable) {<a name="line.181"></a>
+<span class="sourceLineNo">182</span> IOException e =<a name="line.182"></a>
+<span class="sourceLineNo">183</span> new DoNotRetryIOException(regionToSplit.getShortNameToLog() + " NOT splittable");<a name="line.183"></a>
+<span class="sourceLineNo">184</span> if (splittableCheckIOE != null) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span> e.initCause(splittableCheckIOE);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">187</span> throw e;<a name="line.187"></a>
+<span class="sourceLineNo">188</span> }<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span> if (bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.190"></a>
+<span class="sourceLineNo">191</span> throw new DoNotRetryIOException("Region not splittable because bestSplitPoint = null, " +<a name="line.191"></a>
+<span class="sourceLineNo">192</span> "maybe table is too small for auto split. For force split, try specifying split row");<a name="line.192"></a>
+<span class="sourceLineNo">193</span> }<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span> if (Bytes.equals(regionToSplit.getStartKey(), bestSplitRow)) {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> throw new DoNotRetryIOException(<a name="line.196"></a>
+<span class="sourceLineNo">197</span> "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<a name="line.197"></a>
+<span class="sourceLineNo">198</span> }<a name="line.198"></a>
+<span class="sourceLineNo">199</span><a name="line.199"></a>
+<span class="sourceLineNo">200</span> if (!regionToSplit.containsRow(bestSplitRow)) {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> throw new DoNotRetryIOException("Split row is not inside region key range splitKey:" +<a name="line.201"></a>
+<span class="sourceLineNo">202</span> Bytes.toStringBinary(splitRow) + " region: " + regionToSplit);<a name="line.202"></a>
+<span class="sourceLineNo">203</span> }<a name="line.203"></a>
+<span class="sourceLineNo">204</span> }<a name="line.204"></a>
+<span class="sourceLineNo">205</span><a name="line.205"></a>
+<span class="sourceLineNo">206</span> /**<a name="line.206"></a>
+<span class="sourceLineNo">207</span> * Calculate daughter regionid to use.<a name="line.207"></a>
+<span class="sourceLineNo">208</span> * @param hri Parent {@link RegionInfo}<a name="line.208"></a>
+<span class="sourceLineNo">209</span> * @return Daughter region id (timestamp) to use.<a name="line.209"></a>
+<span class="sourceLineNo">210</span> */<a name="line.210"></a>
+<span class="sourceLineNo">211</span> private static long getDaughterRegionIdTimestamp(final RegionInfo hri) {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> long rid = EnvironmentEdgeManager.currentTime();<a name="line.212"></a>
+<span class="sourceLineNo">213</span> // Regionid is timestamp. Can't be less than that of parent else will insert<a name="line.213"></a>
+<span class="sourceLineNo">214</span> // at wrong location in hbase:meta (See HBASE-710).<a name="line.214"></a>
+<span class="sourceLineNo">215</span> if (rid < hri.getRegionId()) {<a name="line.215"></a>
+<span class="sourceLineNo">216</span> LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.216"></a>
+<span class="sourceLineNo">217</span> " but current time here is " + rid);<a name="line.217"></a>
+<span class="sourceLineNo">218</span> rid = hri.getRegionId() + 1;<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span> return rid;<a name="line.220"></a>
+<span class="sourceLineNo">221</span> }<a name="line.221"></a>
+<span class="sourceLineNo">222</span><a name="line.222"></a>
+<span class="sourceLineNo">223</span> private void removeNonDefaultReplicas(MasterProcedureEnv env) throws IOException {<a name="line.223"></a>
+<span class="sourceLineNo">224</span> AssignmentManagerUtil.removeNonDefaultReplicas(env, Stream.of(getParentRegion()),<a name="line.224"></a>
+<span class="sourceLineNo">225</span> getRegionReplication(env));<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span><a name="line.227"></a>
+<span class="sourceLineNo">228</span> private void checkClosedRegions(MasterProcedureEnv env) throws IOException {<a name="line.228"></a>
+<span class="sourceLineNo">229</span> // theoretically this should not happen any more after we use TRSP, but anyway let's add a check<a name="line.229"></a>
+<span class="sourceLineNo">230</span> // here<a name="line.230"></a>
+<span class="sourceLineNo">231</span> AssignmentManagerUtil.checkClosedRegion(env, getParentRegion());<a name="line.231"></a>
+<span class="sourceLineNo">232</span> }<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span> @Override<a name="line.234"></a>
+<span class="sourceLineNo">235</span> protected Flow executeFromState(MasterProcedureEnv env, SplitTableRegionState state)<a name="line.235"></a>
+<span class="sourceLineNo">236</span> throws InterruptedException {<a name="line.236"></a>
+<span class="sourceLineNo">237</span> LOG.trace("{} execute state={}", this, state);<a name="line.237"></a>
+<span class="sourceLineNo">238</span><a name="line.238"></a>
+<span class="sourceLineNo">239</span> try {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> switch (state) {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.241"></a>
+<span class="sourceLineNo">242</span> if (prepareSplitRegion(env)) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.243"></a>
+<span class="sourceLineNo">244</span> break;<a name="line.244"></a>
+<span class="sourceLineNo">245</span> } else {<a name="line.245"></a>
+<span class="sourceLineNo">246</span> return Flow.NO_MORE_STATE;<a name="line.246"></a>
+<span class="sourceLineNo">247</span> }<a name="line.247"></a>
+<span class="sourceLineNo">248</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.248"></a>
+<span class="sourceLineNo">249</span> preSplitRegion(env);<a name="line.249"></a>
+<span class="sourceLineNo">250</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.250"></a>
+<span class="sourceLineNo">251</span> break;<a name="line.251"></a>
+<span class="sourceLineNo">252</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.252"></a>
+<span class="sourceLineNo">253</span> addChildProcedure(createUnassignProcedures(env));<a name="line.253"></a>
+<span class="sourceLineNo">254</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS);<a name="line.254"></a>
+<span class="sourceLineNo">255</span> break;<a name="line.255"></a>
+<span class="sourceLineNo">256</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.256"></a>
+<span class="sourceLineNo">257</span> checkClosedRegions(env);<a name="line.257"></a>
+<span class="sourceLineNo">258</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.258"></a>
+<span class="sourceLineNo">259</span> break;<a name="line.259"></a>
+<span class="sourceLineNo">260</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.260"></a>
+<span class="sourceLineNo">261</span> removeNonDefaultReplicas(env);<a name="line.261"></a>
+<span class="sourceLineNo">262</span> createDaughterRegions(env);<a name="line.262"></a>
+<span class="sourceLineNo">263</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE);<a name="line.263"></a>
+<span class="sourceLineNo">264</span> break;<a name="line.264"></a>
+<span class="sourceLineNo">265</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.265"></a>
+<span class="sourceLineNo">266</span> writeMaxSequenceIdFile(env);<a name="line.266"></a>
+<span class="sourceLineNo">267</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META);<a name="line.267"></a>
+<span class="sourceLineNo">268</span> break;<a name="line.268"></a>
+<span class="sourceLineNo">269</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.269"></a>
+<span class="sourceLineNo">270</span> preSplitRegionBeforeMETA(env);<a name="line.270"></a>
+<span class="sourceLineNo">271</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.271"></a>
+<span class="sourceLineNo">272</span> break;<a name="line.272"></a>
+<span class="sourceLineNo">273</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.273"></a>
+<span class="sourceLineNo">274</span> updateMeta(env);<a name="line.274"></a>
+<span class="sourceLineNo">275</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META);<a name="line.275"></a>
+<span class="sourceLineNo">276</span> break;<a name="line.276"></a>
+<span class="sourceLineNo">277</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.277"></a>
+<span class="sourceLineNo">278</span> preSplitRegionAfterMETA(env);<a name="line.278"></a>
+<span class="sourceLineNo">279</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.279"></a>
+<span class="sourceLineNo">280</span> break;<a name="line.280"></a>
+<span class="sourceLineNo">281</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.281"></a>
+<span class="sourceLineNo">282</span> addChildProcedure(createAssignProcedures(env));<a name="line.282"></a>
+<span class="sourceLineNo">283</span> setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.283"></a>
+<span class="sourceLineNo">284</span> break;<a name="line.284"></a>
+<span class="sourceLineNo">285</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.285"></a>
+<span class="sourceLineNo">286</span> postSplitRegion(env);<a name="line.286"></a>
+<span class="sourceLineNo">287</span> return Flow.NO_MORE_STATE;<a name="line.287"></a>
+<span class="sourceLineNo">288</span> default:<a name="line.288"></a>
+<span class="sourceLineNo">289</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.289"></a>
+<span class="sourceLineNo">290</span> }<a name="line.290"></a>
+<span class="sourceLineNo">291</span> } catch (IOException e) {<a name="line.291"></a>
+<span class="sourceLineNo">292</span> String msg = "Splitting " + getParentRegion().getEncodedName() + ", " + this;<a name="line.292"></a>
+<span class="sourceLineNo">293</span> if (!isRollbackSupported(state)) {<a name="line.293"></a>
+<span class="sourceLineNo">294</span> // We reach a state that cannot be rolled back. We just need to keep retrying.<a name="line.294"></a>
+<span class="sourceLineNo">295</span> LOG.warn(msg, e);<a name="line.295"></a>
+<span class="sourceLineNo">296</span> } else {<a name="line.296"></a>
+<span class="sourceLineNo">297</span> LOG.error(msg, e);<a name="line.297"></a>
+<span class="sourceLineNo">298</span> setFailure("master-split-regions", e);<a name="line.298"></a>
+<span class="sourceLineNo">299</span> }<a name="line.299"></a>
+<span class="sourceLineNo">300</span> }<a name="line.300"></a>
+<span class="sourceLineNo">301</span> // if split fails, need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.301"></a>
+<span class="sourceLineNo">302</span> return Flow.HAS_MORE_STATE;<a name="line.302"></a>
+<span class="sourceLineNo">303</span> }<a name="line.303"></a>
+<span class="sourceLineNo">304</span><a name="line.304"></a>
+<span class="sourceLineNo">305</span> /**<a name="line.305"></a>
+<span class="sourceLineNo">306</span> * To rollback {@link SplitTableRegionProcedure}, an AssignProcedure is asynchronously<a name="line.306"></a>
+<span class="sourceLineNo">307</span> * submitted for parent region to be split (rollback doesn't wait on the completion of the<a name="line.307"></a>
+<span class="sourceLineNo">308</span> * AssignProcedure) . This can be improved by changing rollback() to support sub-procedures.<a name="line.308"></a>
+<span class="sourceLineNo">309</span> * See HBASE-19851 for details.<a name="line.309"></a>
+<span class="sourceLineNo">310</span> */<a name="line.310"></a>
+<span class="sourceLineNo">311</span> @Override<a name="line.311"></a>
+<span class="sourceLineNo">312</span> protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.312"></a>
+<span class="sourceLineNo">313</span> throws IOException, InterruptedException {<a name="line.313"></a>
+<span class="sourceLineNo">314</span> if (isTraceEnabled()) {<a name="line.314"></a>
+<span class="sourceLineNo">315</span> LOG.trace(this + " rollback state=" + state);<a name="line.315"></a>
+<span class="sourceLineNo">316</span> }<a name="line.316"></a>
+<span class="sourceLineNo">317</span><a name="line.317"></a>
+<span class="sourceLineNo">318</span> try {<a name="line.318"></a>
+<span class="sourceLineNo">319</span> switch (state) {<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> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.321"></a>
+<span class="sourceLineNo">322</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.322"></a>
+<span class="sourceLineNo">323</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.323"></a>
+<span class="sourceLineNo">324</span> // PONR<a name="line.324"></a>
+<span class="sourceLineNo">325</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.325"></a>
+<span class="sourceLineNo">326</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.326"></a>
+<span class="sourceLineNo">327</span> break;<a name="line.327"></a>
+<span class="sourceLineNo">328</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.328"></a>
+<span class="sourceLineNo">329</span> case SPLIT_TABLE_REGION_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.329"></a>
+<span class="sourceLineNo">330</span> // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.330"></a>
+<span class="sourceLineNo">331</span> break;<a name="line.331"></a>
+<span class="sourceLineNo">332</span> case SPLIT_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.332"></a>
+<span class="sourceLineNo">333</span> // Doing nothing, in SPLIT_TABLE_REGION_CLOSE_PARENT_REGION,<a name="line.333"></a>
+<span class="sourceLineNo">334</span> // we will bring parent region online<a name="line.334"></a>
+<span class="sourceLineNo">335</span> break;<a name="line.335"></a>
+<span class="sourceLineNo">336</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.336"></a>
+<span class="sourceLineNo">337</span> openParentRegion(env);<a name="line.337"></a>
+<span class="sourceLineNo">338</span> break;<a name="line.338"></a>
+<span class="sourceLineNo">339</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.339"></a>
+<span class="sourceLineNo">340</span> postRollBackSplitRegion(env);<a name="line.340"></a>
+<span class="sourceLineNo">341</span> break;<a name="line.341"></a>
+<span class="sourceLineNo">342</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.342"></a>
+<span class="sourceLineNo">343</span> break; // nothing to do<a name="line.343"></a>
+<span class="sourceLineNo">344</span> default:<a name="line.344"></a>
+<span class="sourceLineNo">345</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.345"></a>
+<span class="sourceLineNo">346</span> }<a name="line.346"></a>
+<span cl
<TRUNCATED>