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From git-site-r...@apache.org
Subject [32/49] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Fri, 16 Jun 2017 15:00:58 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/cd7ae54c/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 6318095..30168b3 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
@@ -33,719 +33,735 @@
 <span class="sourceLineNo">025</span>import java.io.InputStream;<a name="line.25"></a>
 <span class="sourceLineNo">026</span>import java.io.InterruptedIOException;<a name="line.26"></a>
 <span class="sourceLineNo">027</span>import java.io.OutputStream;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.ArrayList;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.Arrays;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.Collection;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.List;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.concurrent.Callable;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.concurrent.ExecutionException;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.concurrent.ExecutorService;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.util.concurrent.Executors;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.util.concurrent.Future;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.util.concurrent.TimeUnit;<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.commons.logging.Log;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.commons.logging.LogFactory;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.fs.FileSystem;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.fs.Path;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HConstants;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.ServerName;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.TableName;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SplitTableRegionState;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.regionserver.HStore;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.regionserver.HStoreFile;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.regionserver.StoreFile;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.76"></a>
-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span>/**<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * The procedure to split a region in a table.<a name="line.79"></a>
-<span class="sourceLineNo">080</span> * Takes lock on the parent region.<a name="line.80"></a>
-<span class="sourceLineNo">081</span> * It holds the lock for the life of the procedure.<a name="line.81"></a>
-<span class="sourceLineNo">082</span> */<a name="line.82"></a>
-<span class="sourceLineNo">083</span>@InterfaceAudience.Private<a name="line.83"></a>
-<span class="sourceLineNo">084</span>public class SplitTableRegionProcedure<a name="line.84"></a>
-<span class="sourceLineNo">085</span>    extends AbstractStateMachineRegionProcedure&lt;SplitTableRegionState&gt; {<a name="line.85"></a>
-<span class="sourceLineNo">086</span>  private static final Log LOG = LogFactory.getLog(SplitTableRegionProcedure.class);<a name="line.86"></a>
-<span class="sourceLineNo">087</span>  private Boolean traceEnabled = null;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>  private HRegionInfo daughter_1_HRI;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>  private HRegionInfo daughter_2_HRI;<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span>  public SplitTableRegionProcedure() {<a name="line.91"></a>
-<span class="sourceLineNo">092</span>    // Required by the Procedure framework to create the procedure on replay<a name="line.92"></a>
-<span class="sourceLineNo">093</span>  }<a name="line.93"></a>
-<span class="sourceLineNo">094</span><a name="line.94"></a>
-<span class="sourceLineNo">095</span>  public SplitTableRegionProcedure(final MasterProcedureEnv env,<a name="line.95"></a>
-<span class="sourceLineNo">096</span>      final HRegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.96"></a>
-<span class="sourceLineNo">097</span>    super(env, regionToSplit);<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span>    checkSplitRow(regionToSplit, splitRow);<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span>    final TableName table = regionToSplit.getTable();<a name="line.101"></a>
-<span class="sourceLineNo">102</span>    final long rid = getDaughterRegionIdTimestamp(regionToSplit);<a name="line.102"></a>
-<span class="sourceLineNo">103</span>    this.daughter_1_HRI = new HRegionInfo(table, regionToSplit.getStartKey(), splitRow, false, rid);<a name="line.103"></a>
-<span class="sourceLineNo">104</span>    this.daughter_2_HRI = new HRegionInfo(table, splitRow, regionToSplit.getEndKey(), false, rid);<a name="line.104"></a>
-<span class="sourceLineNo">105</span>  }<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span>  private static void checkSplitRow(final HRegionInfo regionToSplit, final byte[] splitRow)<a name="line.107"></a>
-<span class="sourceLineNo">108</span>      throws IOException {<a name="line.108"></a>
-<span class="sourceLineNo">109</span>    if (splitRow == null || splitRow.length == 0) {<a name="line.109"></a>
-<span class="sourceLineNo">110</span>      throw new DoNotRetryIOException("Split row cannot be null");<a name="line.110"></a>
-<span class="sourceLineNo">111</span>    }<a name="line.111"></a>
-<span class="sourceLineNo">112</span><a name="line.112"></a>
-<span class="sourceLineNo">113</span>    if (Bytes.equals(regionToSplit.getStartKey(), splitRow)) {<a name="line.113"></a>
-<span class="sourceLineNo">114</span>      throw new DoNotRetryIOException(<a name="line.114"></a>
-<span class="sourceLineNo">115</span>        "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<a name="line.115"></a>
-<span class="sourceLineNo">116</span>    }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span>    if (!regionToSplit.containsRow(splitRow)) {<a name="line.118"></a>
-<span class="sourceLineNo">119</span>      throw new DoNotRetryIOException(<a name="line.119"></a>
-<span class="sourceLineNo">120</span>        "Split row is not inside region key range splitKey:" + Bytes.toStringBinary(splitRow) +<a name="line.120"></a>
-<span class="sourceLineNo">121</span>        " region: " + regionToSplit);<a name="line.121"></a>
-<span class="sourceLineNo">122</span>    }<a name="line.122"></a>
-<span class="sourceLineNo">123</span>  }<a name="line.123"></a>
-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span>  /**<a name="line.125"></a>
-<span class="sourceLineNo">126</span>   * Calculate daughter regionid to use.<a name="line.126"></a>
-<span class="sourceLineNo">127</span>   * @param hri Parent {@link HRegionInfo}<a name="line.127"></a>
-<span class="sourceLineNo">128</span>   * @return Daughter region id (timestamp) to use.<a name="line.128"></a>
-<span class="sourceLineNo">129</span>   */<a name="line.129"></a>
-<span class="sourceLineNo">130</span>  private static long getDaughterRegionIdTimestamp(final HRegionInfo hri) {<a name="line.130"></a>
-<span class="sourceLineNo">131</span>    long rid = EnvironmentEdgeManager.currentTime();<a name="line.131"></a>
-<span class="sourceLineNo">132</span>    // Regionid is timestamp.  Can't be less than that of parent else will insert<a name="line.132"></a>
-<span class="sourceLineNo">133</span>    // at wrong location in hbase:meta (See HBASE-710).<a name="line.133"></a>
-<span class="sourceLineNo">134</span>    if (rid &lt; hri.getRegionId()) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span>      LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.135"></a>
-<span class="sourceLineNo">136</span>        " but current time here is " + rid);<a name="line.136"></a>
-<span class="sourceLineNo">137</span>      rid = hri.getRegionId() + 1;<a name="line.137"></a>
-<span class="sourceLineNo">138</span>    }<a name="line.138"></a>
-<span class="sourceLineNo">139</span>    return rid;<a name="line.139"></a>
-<span class="sourceLineNo">140</span>  }<a name="line.140"></a>
-<span class="sourceLineNo">141</span><a name="line.141"></a>
-<span class="sourceLineNo">142</span>  @Override<a name="line.142"></a>
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-<span class="sourceLineNo">144</span>      throws InterruptedException {<a name="line.144"></a>
-<span class="sourceLineNo">145</span>    if (isTraceEnabled()) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span>      LOG.trace(this + " execute state=" + state);<a name="line.146"></a>
-<span class="sourceLineNo">147</span>    }<a name="line.147"></a>
-<span class="sourceLineNo">148</span><a name="line.148"></a>
-<span class="sourceLineNo">149</span>    try {<a name="line.149"></a>
-<span class="sourceLineNo">150</span>      switch (state) {<a name="line.150"></a>
-<span class="sourceLineNo">151</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.151"></a>
-<span class="sourceLineNo">152</span>        if (prepareSplitRegion(env)) {<a name="line.152"></a>
-<span class="sourceLineNo">153</span>          setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.153"></a>
-<span class="sourceLineNo">154</span>          break;<a name="line.154"></a>
-<span class="sourceLineNo">155</span>        } else {<a name="line.155"></a>
-<span class="sourceLineNo">156</span>          assert isFailed() : "split region should have an exception here";<a name="line.156"></a>
-<span class="sourceLineNo">157</span>          return Flow.NO_MORE_STATE;<a name="line.157"></a>
-<span class="sourceLineNo">158</span>        }<a name="line.158"></a>
-<span class="sourceLineNo">159</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.159"></a>
-<span class="sourceLineNo">160</span>        preSplitRegion(env);<a name="line.160"></a>
-<span class="sourceLineNo">161</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.161"></a>
-<span class="sourceLineNo">162</span>        break;<a name="line.162"></a>
-<span class="sourceLineNo">163</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.163"></a>
-<span class="sourceLineNo">164</span>        addChildProcedure(createUnassignProcedures(env, getRegionReplication(env)));<a name="line.164"></a>
-<span class="sourceLineNo">165</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.165"></a>
-<span class="sourceLineNo">166</span>        break;<a name="line.166"></a>
-<span class="sourceLineNo">167</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.167"></a>
-<span class="sourceLineNo">168</span>        createDaughterRegions(env);<a name="line.168"></a>
-<span class="sourceLineNo">169</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR);<a name="line.169"></a>
-<span class="sourceLineNo">170</span>        break;<a name="line.170"></a>
-<span class="sourceLineNo">171</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR:<a name="line.171"></a>
-<span class="sourceLineNo">172</span>        preSplitRegionBeforePONR(env);<a name="line.172"></a>
-<span class="sourceLineNo">173</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.173"></a>
-<span class="sourceLineNo">174</span>        break;<a name="line.174"></a>
-<span class="sourceLineNo">175</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.175"></a>
-<span class="sourceLineNo">176</span>        updateMetaForDaughterRegions(env);<a name="line.176"></a>
-<span class="sourceLineNo">177</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR);<a name="line.177"></a>
-<span class="sourceLineNo">178</span>        break;<a name="line.178"></a>
-<span class="sourceLineNo">179</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.179"></a>
-<span class="sourceLineNo">180</span>        preSplitRegionAfterPONR(env);<a name="line.180"></a>
-<span class="sourceLineNo">181</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.181"></a>
-<span class="sourceLineNo">182</span>        break;<a name="line.182"></a>
-<span class="sourceLineNo">183</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.183"></a>
-<span class="sourceLineNo">184</span>        addChildProcedure(createAssignProcedures(env, getRegionReplication(env)));<a name="line.184"></a>
-<span class="sourceLineNo">185</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.185"></a>
-<span class="sourceLineNo">186</span>        break;<a name="line.186"></a>
-<span class="sourceLineNo">187</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.187"></a>
-<span class="sourceLineNo">188</span>        postSplitRegion(env);<a name="line.188"></a>
-<span class="sourceLineNo">189</span>        return Flow.NO_MORE_STATE;<a name="line.189"></a>
-<span class="sourceLineNo">190</span>      default:<a name="line.190"></a>
-<span class="sourceLineNo">191</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.191"></a>
-<span class="sourceLineNo">192</span>      }<a name="line.192"></a>
-<span class="sourceLineNo">193</span>    } catch (IOException e) {<a name="line.193"></a>
-<span class="sourceLineNo">194</span>      String msg = "Error trying to split region " + getParentRegion().getEncodedName() + " in the table "<a name="line.194"></a>
-<span class="sourceLineNo">195</span>          + getTableName() + " (in state=" + state + ")";<a name="line.195"></a>
-<span class="sourceLineNo">196</span>      if (!isRollbackSupported(state)) {<a name="line.196"></a>
-<span class="sourceLineNo">197</span>        // We reach a state that cannot be rolled back. We just need to keep retry.<a name="line.197"></a>
-<span class="sourceLineNo">198</span>        LOG.warn(msg, e);<a name="line.198"></a>
-<span class="sourceLineNo">199</span>      } else {<a name="line.199"></a>
-<span class="sourceLineNo">200</span>        LOG.error(msg, e);<a name="line.200"></a>
-<span class="sourceLineNo">201</span>        setFailure(e);<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>    return Flow.HAS_MORE_STATE;<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>  @Override<a name="line.207"></a>
-<span class="sourceLineNo">208</span>  protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.208"></a>
-<span class="sourceLineNo">209</span>      throws IOException, InterruptedException {<a name="line.209"></a>
-<span class="sourceLineNo">210</span>    if (isTraceEnabled()) {<a name="line.210"></a>
-<span class="sourceLineNo">211</span>      LOG.trace(this + " rollback state=" + state);<a name="line.211"></a>
-<span class="sourceLineNo">212</span>    }<a name="line.212"></a>
-<span class="sourceLineNo">213</span><a name="line.213"></a>
-<span class="sourceLineNo">214</span>    try {<a name="line.214"></a>
-<span class="sourceLineNo">215</span>      switch (state) {<a name="line.215"></a>
-<span class="sourceLineNo">216</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.216"></a>
-<span class="sourceLineNo">217</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.217"></a>
-<span class="sourceLineNo">218</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.218"></a>
-<span class="sourceLineNo">219</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.219"></a>
-<span class="sourceLineNo">220</span>        // PONR<a name="line.220"></a>
-<span class="sourceLineNo">221</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.221"></a>
-<span class="sourceLineNo">222</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR:<a name="line.222"></a>
+<span class="sourceLineNo">028</span>import java.util.*;<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><a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.commons.logging.Log;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.commons.logging.LogFactory;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.conf.Configuration;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.fs.FileSystem;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.fs.Path;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HConstants;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.ServerName;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.TableName;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SplitTableRegionState;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.regionserver.HStore;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.regionserver.HStoreFile;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.regionserver.StoreFile;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span>/**<a name="line.75"></a>
+<span class="sourceLineNo">076</span> * The procedure to split a region in a table.<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * Takes lock on the parent region.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * It holds the lock for the life of the procedure.<a name="line.78"></a>
+<span class="sourceLineNo">079</span> */<a name="line.79"></a>
+<span class="sourceLineNo">080</span>@InterfaceAudience.Private<a name="line.80"></a>
+<span class="sourceLineNo">081</span>public class SplitTableRegionProcedure<a name="line.81"></a>
+<span class="sourceLineNo">082</span>    extends AbstractStateMachineRegionProcedure&lt;SplitTableRegionState&gt; {<a name="line.82"></a>
+<span class="sourceLineNo">083</span>  private static final Log LOG = LogFactory.getLog(SplitTableRegionProcedure.class);<a name="line.83"></a>
+<span class="sourceLineNo">084</span>  private Boolean traceEnabled = null;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  private HRegionInfo daughter_1_HRI;<a name="line.85"></a>
+<span class="sourceLineNo">086</span>  private HRegionInfo daughter_2_HRI;<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span>  public SplitTableRegionProcedure() {<a name="line.88"></a>
+<span class="sourceLineNo">089</span>    // Required by the Procedure framework to create the procedure on replay<a name="line.89"></a>
+<span class="sourceLineNo">090</span>  }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span>  public SplitTableRegionProcedure(final MasterProcedureEnv env,<a name="line.92"></a>
+<span class="sourceLineNo">093</span>      final HRegionInfo regionToSplit, final byte[] splitRow) throws IOException {<a name="line.93"></a>
+<span class="sourceLineNo">094</span>    super(env, regionToSplit);<a name="line.94"></a>
+<span class="sourceLineNo">095</span><a name="line.95"></a>
+<span class="sourceLineNo">096</span>    checkSplitRow(regionToSplit, splitRow);<a name="line.96"></a>
+<span class="sourceLineNo">097</span><a name="line.97"></a>
+<span class="sourceLineNo">098</span>    final TableName table = regionToSplit.getTable();<a name="line.98"></a>
+<span class="sourceLineNo">099</span>    final long rid = getDaughterRegionIdTimestamp(regionToSplit);<a name="line.99"></a>
+<span class="sourceLineNo">100</span>    this.daughter_1_HRI = new HRegionInfo(table, regionToSplit.getStartKey(), splitRow, false, rid);<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    this.daughter_2_HRI = new HRegionInfo(table, splitRow, regionToSplit.getEndKey(), false, rid);<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>  private static void checkSplitRow(final HRegionInfo regionToSplit, final byte[] splitRow)<a name="line.104"></a>
+<span class="sourceLineNo">105</span>      throws IOException {<a name="line.105"></a>
+<span class="sourceLineNo">106</span>    if (splitRow == null || splitRow.length == 0) {<a name="line.106"></a>
+<span class="sourceLineNo">107</span>      throw new DoNotRetryIOException("Split row cannot be null");<a name="line.107"></a>
+<span class="sourceLineNo">108</span>    }<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span>    if (Bytes.equals(regionToSplit.getStartKey(), splitRow)) {<a name="line.110"></a>
+<span class="sourceLineNo">111</span>      throw new DoNotRetryIOException(<a name="line.111"></a>
+<span class="sourceLineNo">112</span>        "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<a name="line.112"></a>
+<span class="sourceLineNo">113</span>    }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span>    if (!regionToSplit.containsRow(splitRow)) {<a name="line.115"></a>
+<span class="sourceLineNo">116</span>      throw new DoNotRetryIOException(<a name="line.116"></a>
+<span class="sourceLineNo">117</span>        "Split row is not inside region key range splitKey:" + Bytes.toStringBinary(splitRow) +<a name="line.117"></a>
+<span class="sourceLineNo">118</span>        " region: " + regionToSplit);<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    }<a name="line.119"></a>
+<span class="sourceLineNo">120</span>  }<a name="line.120"></a>
+<span class="sourceLineNo">121</span><a name="line.121"></a>
+<span class="sourceLineNo">122</span>  /**<a name="line.122"></a>
+<span class="sourceLineNo">123</span>   * Calculate daughter regionid to use.<a name="line.123"></a>
+<span class="sourceLineNo">124</span>   * @param hri Parent {@link HRegionInfo}<a name="line.124"></a>
+<span class="sourceLineNo">125</span>   * @return Daughter region id (timestamp) to use.<a name="line.125"></a>
+<span class="sourceLineNo">126</span>   */<a name="line.126"></a>
+<span class="sourceLineNo">127</span>  private static long getDaughterRegionIdTimestamp(final HRegionInfo hri) {<a name="line.127"></a>
+<span class="sourceLineNo">128</span>    long rid = EnvironmentEdgeManager.currentTime();<a name="line.128"></a>
+<span class="sourceLineNo">129</span>    // Regionid is timestamp.  Can't be less than that of parent else will insert<a name="line.129"></a>
+<span class="sourceLineNo">130</span>    // at wrong location in hbase:meta (See HBASE-710).<a name="line.130"></a>
+<span class="sourceLineNo">131</span>    if (rid &lt; hri.getRegionId()) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span>      LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.132"></a>
+<span class="sourceLineNo">133</span>        " but current time here is " + rid);<a name="line.133"></a>
+<span class="sourceLineNo">134</span>      rid = hri.getRegionId() + 1;<a name="line.134"></a>
+<span class="sourceLineNo">135</span>    }<a name="line.135"></a>
+<span class="sourceLineNo">136</span>    return rid;<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>  @Override<a name="line.139"></a>
+<span class="sourceLineNo">140</span>  protected Flow executeFromState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.140"></a>
+<span class="sourceLineNo">141</span>      throws InterruptedException {<a name="line.141"></a>
+<span class="sourceLineNo">142</span>    if (isTraceEnabled()) {<a name="line.142"></a>
+<span class="sourceLineNo">143</span>      LOG.trace(this + " execute state=" + state);<a name="line.143"></a>
+<span class="sourceLineNo">144</span>    }<a name="line.144"></a>
+<span class="sourceLineNo">145</span><a name="line.145"></a>
+<span class="sourceLineNo">146</span>    try {<a name="line.146"></a>
+<span class="sourceLineNo">147</span>      switch (state) {<a name="line.147"></a>
+<span class="sourceLineNo">148</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.148"></a>
+<span class="sourceLineNo">149</span>        if (prepareSplitRegion(env)) {<a name="line.149"></a>
+<span class="sourceLineNo">150</span>          setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.150"></a>
+<span class="sourceLineNo">151</span>          break;<a name="line.151"></a>
+<span class="sourceLineNo">152</span>        } else {<a name="line.152"></a>
+<span class="sourceLineNo">153</span>          assert isFailed() : "split region should have an exception here";<a name="line.153"></a>
+<span class="sourceLineNo">154</span>          return Flow.NO_MORE_STATE;<a name="line.154"></a>
+<span class="sourceLineNo">155</span>        }<a name="line.155"></a>
+<span class="sourceLineNo">156</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.156"></a>
+<span class="sourceLineNo">157</span>        preSplitRegion(env);<a name="line.157"></a>
+<span class="sourceLineNo">158</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.158"></a>
+<span class="sourceLineNo">159</span>        break;<a name="line.159"></a>
+<span class="sourceLineNo">160</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.160"></a>
+<span class="sourceLineNo">161</span>        addChildProcedure(createUnassignProcedures(env, getRegionReplication(env)));<a name="line.161"></a>
+<span class="sourceLineNo">162</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.162"></a>
+<span class="sourceLineNo">163</span>        break;<a name="line.163"></a>
+<span class="sourceLineNo">164</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.164"></a>
+<span class="sourceLineNo">165</span>        createDaughterRegions(env);<a name="line.165"></a>
+<span class="sourceLineNo">166</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR);<a name="line.166"></a>
+<span class="sourceLineNo">167</span>        break;<a name="line.167"></a>
+<span class="sourceLineNo">168</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR:<a name="line.168"></a>
+<span class="sourceLineNo">169</span>        preSplitRegionBeforePONR(env);<a name="line.169"></a>
+<span class="sourceLineNo">170</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.170"></a>
+<span class="sourceLineNo">171</span>        break;<a name="line.171"></a>
+<span class="sourceLineNo">172</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.172"></a>
+<span class="sourceLineNo">173</span>        updateMetaForDaughterRegions(env);<a name="line.173"></a>
+<span class="sourceLineNo">174</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR);<a name="line.174"></a>
+<span class="sourceLineNo">175</span>        break;<a name="line.175"></a>
+<span class="sourceLineNo">176</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.176"></a>
+<span class="sourceLineNo">177</span>        preSplitRegionAfterPONR(env);<a name="line.177"></a>
+<span class="sourceLineNo">178</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.178"></a>
+<span class="sourceLineNo">179</span>        break;<a name="line.179"></a>
+<span class="sourceLineNo">180</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.180"></a>
+<span class="sourceLineNo">181</span>        addChildProcedure(createAssignProcedures(env, getRegionReplication(env)));<a name="line.181"></a>
+<span class="sourceLineNo">182</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.182"></a>
+<span class="sourceLineNo">183</span>        break;<a name="line.183"></a>
+<span class="sourceLineNo">184</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.184"></a>
+<span class="sourceLineNo">185</span>        postSplitRegion(env);<a name="line.185"></a>
+<span class="sourceLineNo">186</span>        return Flow.NO_MORE_STATE;<a name="line.186"></a>
+<span class="sourceLineNo">187</span>      default:<a name="line.187"></a>
+<span class="sourceLineNo">188</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.188"></a>
+<span class="sourceLineNo">189</span>      }<a name="line.189"></a>
+<span class="sourceLineNo">190</span>    } catch (IOException e) {<a name="line.190"></a>
+<span class="sourceLineNo">191</span>      String msg = "Error trying to split region " + getParentRegion().getEncodedName() + " in the table "<a name="line.191"></a>
+<span class="sourceLineNo">192</span>          + getTableName() + " (in state=" + state + ")";<a name="line.192"></a>
+<span class="sourceLineNo">193</span>      if (!isRollbackSupported(state)) {<a name="line.193"></a>
+<span class="sourceLineNo">194</span>        // We reach a state that cannot be rolled back. We just need to keep retry.<a name="line.194"></a>
+<span class="sourceLineNo">195</span>        LOG.warn(msg, e);<a name="line.195"></a>
+<span class="sourceLineNo">196</span>      } else {<a name="line.196"></a>
+<span class="sourceLineNo">197</span>        LOG.error(msg, e);<a name="line.197"></a>
+<span class="sourceLineNo">198</span>        setFailure(e);<a name="line.198"></a>
+<span class="sourceLineNo">199</span>      }<a name="line.199"></a>
+<span class="sourceLineNo">200</span>    }<a name="line.200"></a>
+<span class="sourceLineNo">201</span>    return Flow.HAS_MORE_STATE;<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>  @Override<a name="line.204"></a>
+<span class="sourceLineNo">205</span>  protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.205"></a>
+<span class="sourceLineNo">206</span>      throws IOException, InterruptedException {<a name="line.206"></a>
+<span class="sourceLineNo">207</span>    if (isTraceEnabled()) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>      LOG.trace(this + " rollback state=" + state);<a name="line.208"></a>
+<span class="sourceLineNo">209</span>    }<a name="line.209"></a>
+<span class="sourceLineNo">210</span><a name="line.210"></a>
+<span class="sourceLineNo">211</span>    try {<a name="line.211"></a>
+<span class="sourceLineNo">212</span>      switch (state) {<a name="line.212"></a>
+<span class="sourceLineNo">213</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.213"></a>
+<span class="sourceLineNo">214</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.214"></a>
+<span class="sourceLineNo">215</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.215"></a>
+<span class="sourceLineNo">216</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.216"></a>
+<span class="sourceLineNo">217</span>        // PONR<a name="line.217"></a>
+<span class="sourceLineNo">218</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.218"></a>
+<span class="sourceLineNo">219</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR:<a name="line.219"></a>
+<span class="sourceLineNo">220</span>        break;<a name="line.220"></a>
+<span class="sourceLineNo">221</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.221"></a>
+<span class="sourceLineNo">222</span>        // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.222"></a>
 <span class="sourceLineNo">223</span>        break;<a name="line.223"></a>
-<span class="sourceLineNo">224</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.224"></a>
-<span class="sourceLineNo">225</span>        // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.225"></a>
+<span class="sourceLineNo">224</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.224"></a>
+<span class="sourceLineNo">225</span>        openParentRegion(env);<a name="line.225"></a>
 <span class="sourceLineNo">226</span>        break;<a name="line.226"></a>
-<span class="sourceLineNo">227</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.227"></a>
-<span class="sourceLineNo">228</span>        openParentRegion(env);<a name="line.228"></a>
+<span class="sourceLineNo">227</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.227"></a>
+<span class="sourceLineNo">228</span>        postRollBackSplitRegion(env);<a name="line.228"></a>
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-<span class="sourceLineNo">230</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.230"></a>
-<span class="sourceLineNo">231</span>        postRollBackSplitRegion(env);<a name="line.231"></a>
-<span class="sourceLineNo">232</span>        break;<a name="line.232"></a>
-<span class="sourceLineNo">233</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.233"></a>
-<span class="sourceLineNo">234</span>        break; // nothing to do<a name="line.234"></a>
-<span class="sourceLineNo">235</span>      default:<a name="line.235"></a>
-<span class="sourceLineNo">236</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.236"></a>
-<span class="sourceLineNo">237</span>      }<a name="line.237"></a>
-<span class="sourceLineNo">238</span>    } catch (IOException e) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span>      // This will be retried. Unless there is a bug in the code,<a name="line.239"></a>
-<span class="sourceLineNo">240</span>      // this should be just a "temporary error" (e.g. network down)<a name="line.240"></a>
-<span class="sourceLineNo">241</span>      LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.241"></a>
-<span class="sourceLineNo">242</span>          " for splitting the region "<a name="line.242"></a>
-<span class="sourceLineNo">243</span>        + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.243"></a>
-<span class="sourceLineNo">244</span>      throw e;<a name="line.244"></a>
-<span class="sourceLineNo">245</span>    }<a name="line.245"></a>
-<span class="sourceLineNo">246</span>  }<a name="line.246"></a>
-<span class="sourceLineNo">247</span><a name="line.247"></a>
-<span class="sourceLineNo">248</span>  /*<a name="line.248"></a>
-<span class="sourceLineNo">249</span>   * Check whether we are in the state that can be rollback<a name="line.249"></a>
-<span class="sourceLineNo">250</span>   */<a name="line.250"></a>
-<span class="sourceLineNo">251</span>  @Override<a name="line.251"></a>
-<span class="sourceLineNo">252</span>  protected boolean isRollbackSupported(final SplitTableRegionState state) {<a name="line.252"></a>
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-<span class="sourceLineNo">255</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.255"></a>
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-<span class="sourceLineNo">258</span>        // It is not safe to rollback if we reach to these states.<a name="line.258"></a>
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-<span class="sourceLineNo">260</span>      default:<a name="line.260"></a>
-<span class="sourceLineNo">261</span>        break;<a name="line.261"></a>
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-<span class="sourceLineNo">265</span><a name="line.265"></a>
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+<span class="sourceLineNo">278</span>  @Override<a name="line.278"></a>
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+<span class="sourceLineNo">284</span>        .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.284"></a>
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+<span class="sourceLineNo">290</span><a name="line.290"></a>
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+<span class="sourceLineNo">299</span>    assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.299"></a>
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+<span class="sourceLineNo">303</span><a name="line.303"></a>
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+<span class="sourceLineNo">305</span>  public void toStringClassDetails(StringBuilder sb) {<a name="line.305"></a>
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+<span class="sourceLineNo">307</span>    sb.append(" table=");<a name="line.307"></a>
+<span class="sourceLineNo">308</span>    sb.append(getTableName());<a name="line.308"></a>
+<span class="sourceLineNo">309</span>    sb.append(", parent=");<a name="line.309"></a>
+<span class="sourceLineNo">310</span>    sb.append(getParentRegion().getShortNameToLog());<a name="line.310"></a>
+<span class="sourceLineNo">311</span>    sb.append(", daughterA=");<a name="line.311"></a>
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+<span class="sourceLineNo">316</span><a name="line.316"></a>
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+<span class="sourceLineNo">321</span>  @Override<a name="line.321"></a>
+<span class="sourceLineNo">322</span>  public TableOperationType getTableOperationType() {<a name="line.322"></a>
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+<span class="sourceLineNo">325</span><a name="line.325"></a>
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+<span class="sourceLineNo">327</span>  protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.327"></a>
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+<span class="sourceLineNo">329</span>  }<a name="line.329"></a>
+<span class="sourceLineNo">330</span><a name="line.330"></a>
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+<span class="sourceLineNo">333</span>  }<a name="line.333"></a>
+<span class="sourceLineNo">334</span><a name="line.334"></a>
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+<span class="sourceLineNo">336</span>  /**<a name="line.336"></a>
+<span class="sourceLineNo">337</span>   * Prepare to Split region.<a name="line.337"></a>
+<span class="sourceLineNo">338</span>   * @param env MasterProcedureEnv<a name="line.338"></a>
+<span class="sourceLineNo">339</span>   * @throws IOException<a name="line.339"></a>
+<span class="sourceLineNo">340</span>   */<a name="line.340"></a>
+<span class="sourceLineNo">341</span>  @VisibleForTesting<a name="line.341"></a>
+<span class="sourceLineNo">342</span>  public boolean prepareSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.342"></a>
+<span class="sourceLineNo">343</span>    // Check whether the region is splittable<a name="line.343"></a>
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+<span class="sourceLineNo">347</span>    if (node != null) {<a name="line.347"></a>
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+<span class="sourceLineNo">349</span><a name="line.349"></a>
+<span class="sourceLineNo">350</span>      // Lookup the parent HRI state from the AM, which has the latest updated info.<a name="line.350"></a>
+<span class="sourceLineNo">351</span>      // Protect against the case where concurrent SPLIT requests came in and succeeded<a name="line.351"></a>
+<span class="sourceLineNo">352</span>      // just before us.<a name="line.352"></a>
+<span class="sourceLineNo">353</span>      if (node.isInState(State.SPLIT)) {<a name="line.353"></a>
+<span class="sourceLineNo">354</span>        LOG.info("Split of " + parentHRI + " skipped; state is already SPLIT");<a name="line.354"></a>
+<span class="sourceLineNo">355</span>        return false;<a name="line.355"></a>
+<span class="sourceLineNo">356</span>      }<a name="line.356"></a>
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+<span class="sourceLineNo">358</span>        LOG.info("Split of " + parentHRI + " skipped because offline/split.");<a name="line.358"></a>
+<span class="sourceLineNo">359</span>        return false;<a name="line.359"></a>
+<span class="sourceLineNo">360</span>      }<a name="line.360"></a>
+<span class="sourceLineNo">361</span><a name="line.361"></a>
+<span class="sourceLineNo">362</span>      // expected parent to be online or closed<a name="line.362"></a>
+<span class="sourceLineNo">363</span>      if (!node.isInState(EXPECTED_SPLIT_STATES)) {<a name="line.363"></a>
+<span class="sourceLineNo">364</span>        // We may have SPLIT already?<a name="line.364"></a>
+<span class="sourceLineNo">365</span>        setFailure(new IOException("Split " + parentHRI.getRegionNameAsString() +<a name="line.365"></a>
+<span class="sourceLineNo">366</span>            " FAILED because state=" + node.getState() + "; expected " +<a name="line.366"></a>
+<span class="sourceLineNo">367</span>            Arrays.toString(EXPECTED_SPLIT_STATES)));<a name="line.367"></a>
+<span class="sourceLineNo">368</span>        return false;<a name="line.368"></a>
+<span class="sourceLineNo">369</span>      }<a name="line.369"></a>
+<span class="sourceLineNo">370</span><a name="line.370"></a>
+<span class="sourceLineNo">371</span>      // Ask the remote regionserver if this region is splittable. If we get an IOE, report it<a name="line.371"></a>
+<span class="sourceLineNo">372</span>      // along w/ the failure so can see why we are not splittable at this time.<a name="line.372"></a>
+<span class="sourceLineNo">373</span>      IOException splittableCheckIOE = null;<a name="line.373"></a>
+<span class="sourceLineNo">374</span>      boolean splittable = false;<a name="line.374"></a>
+<span class="sourceLineNo">375</span>      try {<a name="line.375"></a>
+<span class="sourceLineNo">376</span>        GetRegionInfoResponse response =<a name="line.376"></a>
+<span class="sourceLineNo">377</span>            Util.getRegionInfoResponse(env, node.getRegionLocation(), node.getRegionInfo());<a name="line.377"></a>
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+<span class="sourceLineNo">379</span>        if (LOG.isDebugEnabled()) {<a name="line.379"></a>
+<span class="sourceLineNo">380</span>          LOG.debug("Splittable=" + splittable + " " + this + " " + node.toShortString());<a name="line.380"></a>
+<span class="sourceLineNo">381</span>        }<a name="line.381"></a>
+<span class="sourceLineNo">382</span>      } catch (IOException e) {<a name="line.382"></a>
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+<span class="sourceLineNo">388</span>        setFailure(e);<a name="line.388"></a>
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+<span class="sourceLineNo">392</span><a name="line.392"></a>
+<span class="sourceLineNo">393</span>    // Since we have the lock and the master is coordinating the operation<a name="line.393"></a>
+<span class="sourceLineNo">394</span>    // we are always able to split the region<a name="line.394"></a>
+<span class="sourceLineNo">395</span>    if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.SPLIT)) {<a name="line.395"></a>
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+<span class="sourceLineNo">397</span>      setFailure(new IOException("Split region " +<a name="line.397"></a>
+<span class="sourceLineNo">398</span>          (parentHRI == null? "null": parentHRI.getRegionNameAsString()) +<a name="line.398"></a>
+<span class="sourceLineNo">399</span>          " failed due to split switch off"));<a name="line.399"></a>
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+<span class="sourceLineNo">403</span>  }<a name="line.403"></a>
+<span class="sourceLineNo">404</span><a name="line.404"></a>
+<span class="sourceLineNo">405</span>  /**<a name="line.405"></a>
+<span class="sourceLineNo">406</span>   * Action before splitting region in a table.<a name="line.406"></a>
+<span class="sourceLineNo">407</span>   * @param env MasterProcedureEnv<a name="line.407"></a>
+<span class="sourceLineNo">408</span>   * @throws IOException<a name="line.408"></a>
+<span class="sourceLineNo">409</span>   * @throws InterruptedException<a name="line.409"></a>
+<span class="sourceLineNo">410</span>   */<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  private void preSplitRegion(final MasterProcedureEnv env)<a name="line.411"></a>
+<span class="sourceLineNo">412</span>      throws IOException, InterruptedException {<a name="line.412"></a>
+<span class="sourceLineNo">413</span>    final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.413"></a>
+<span class="sourceLineNo">414</span>    if (cpHost != null) {<a name="line.414"></a>
+<span class="sourceLineNo">415</span>      cpHost.preSplitRegionAction(getTableName(), getSplitRow(), getUser());<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><a name="line.418"></a>
+<span class="sourceLineNo">419</span>  /**<a name="line.419"></a>
+<span class="sourceLineNo">420</span>   * Action after rollback a split table region action.<a name="line.420"></a>
+<span class="sourceLineNo">421</span>   * @param env MasterProcedureEnv<a name="line.421"></a>
+<span class="sourceLineNo">422</span>   * @throws IOException<a name="line.422"></a>
+<span class="sourceLineNo">423</span>   */<a name="line.423"></a>
+<span class="sourceLineNo">424</span>  private void postRollBackSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.424"></a>
+<span class="sourceLineNo">425</span>    final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.425"></a>
+<span class="sourceLineNo">426</span>    if (cpHost != null) {<a name="line.426"></a>
+<span class="sourceLineNo">427</span>      cpHost.postRollBackSplitRegionAction(getUser());<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><a name="line.430"></a>
+<span class="sourceLineNo">431</span>  /**<a name="line.431"></a>
+<span class="sourceLineNo">432</span>   * Rollback close parent region<a name="line.432"></a>
+<span class="sourceLineNo">433</span>   * @param env MasterProcedureEnv<a name="line.433"></a>
+<span class="sourceLineNo">434</span>   **/<a name="line.434"></a>
+<span class="sourceLineNo">435</span>  private void openParentRegion(final MasterProcedureEnv env) throws IOException {<a name="line.435"></a>
+<span class="sourceLineNo">436</span>    // Check whether the region is closed; if so, open it in the same server<a name="line.436"></a>
+<span class="sourceLineNo">437</span>    final int regionReplication = getRegionReplication(env);<a name="line.437"></a>
+<span class="sourceLineNo">438</span>    final ServerName serverName = getParentRegionServerName(env);<a name="line.438"></a>
+<span class="sourceLineNo">439</span><a name="line.439"></a>
+<span class="sourceLineNo">440</span>    final AssignProcedure[] procs = new AssignProcedure[regionReplication];<a name="line.440"></a>
+<span class="sourceLineNo">441</span>    for (int i = 0; i &lt; regionReplication; ++i) {<a name="line.441"></a>
+<span class="sourceLineNo">442</span>      final HRegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(getParentRegion(), i);<a name="line.442"></a>
+<span class="sourceLineNo">443</span>      procs[i] = env.getAssignmentManager().createAssignProcedure(hri, serverName);<a name="line.443"></a>
+<span class="sourceLineNo">444</span>    }<a name="line.444"></a>
+<span class="sourceLineNo">445</span>    env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<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>  /**<a name="line.448"></a>
+<span class="sourceLineNo">449</span>   * Create daughter regions<a name="line.449"></a>
+<span class="sourceLineNo">450</span>   * @param env MasterProcedureEnv<a name="line.450"></a>
+<span class="sourceLineNo">451</span>   * @throws IOException<a name="line.451"></a>
+<span class="sourceLineNo">452</span>   */<a name="line.452"></a>
+<span class="sourceLineNo">453</span>  @VisibleForTesting<a name="line.453"></a>
+<span class="sourceLineNo">454</span>  public void createDaughterRegions(final MasterProcedureEnv env) throws IOException {<a name="line.454"></a>
+<span class="sourceLineNo">455</span>    final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.455"></a>
+<span class="sourceLineNo">456</span>    final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), getTableName());<a name="line.456"></a>
+<span class="sourceLineNo">457</span>    final FileSystem fs = mfs.getFileSystem();<a name="line.457"></a>
+<span class="sourceLineNo">458</span>    HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.458"></a>
+<span class="sourceLineNo">459</span>      env.getMasterConfiguration(), fs, tabledir, getParentRegion(), false);<a name="line.459"></a>
+<span class="sourceLineNo">460</span>    regionFs.createSplitsDir();<a name="line.460"></a>
+<span class="sourceLineNo">461</span><a name="line.461"></a>
+<span class="sourceLineNo">462</span>    Pair&lt;Integer, Integer&gt; expectedReferences = splitStoreFiles(env, regionFs);<a name="line.462"></a>
+<span class="sourceLineNo">463</span><a name="line.463"></a>
+<span class="sourceLineNo">464</span>    assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.464"></a>
+<span class="sourceLineNo">465</span>      regionFs.getSplitsDir(daughter_1_HRI));<a name="line.465"></a>
+<span class="sourceLineNo">466</span>    //Move the files from the temporary .splits to the final /table/region directory<a name="line.466"></a>
+<span class="sourceLineNo">467</span>    regionFs.commitDaughterRegion(daughter_1_HRI);<a name="line.467"></a>
 <span class="sourceLineNo">468</span>    assertReferenceF

<TRUNCATED>

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