http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0383a9c2/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/DispatchMergingRegionsProcedure.html
----------------------------------------------------------------------
diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/DispatchMergingRegionsProcedure.html
b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/DispatchMergingRegionsProcedure.html
deleted file mode 100644
index a41cd97..0000000
---
a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/DispatchMergingRegionsProcedure.html
+++ /dev/null
@@ -1,656 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
-<html lang="en">
-<head>
-<title>Source code</title>
-<link rel="stylesheet" type="text/css"
href="../../../../../../../stylesheet.css" title="Style">
-</head>
-<body>
-<div class="sourceContainer">
-<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
-<span class="sourceLineNo">002</span> * Licensed to the Apache Software
Foundation (ASF) under one<a name="line.2"></a>
-<span class="sourceLineNo">003</span> * or more contributor license
agreements. See the NOTICE file<a name="line.3"></a>
-<span class="sourceLineNo">004</span> * distributed with this work for
additional information<a name="line.4"></a>
-<span class="sourceLineNo">005</span> * regarding copyright ownership. The
ASF licenses this file<a name="line.5"></a>
-<span class="sourceLineNo">006</span> * to you under the Apache License,
Version 2.0 (the<a name="line.6"></a>
-<span class="sourceLineNo">007</span> * "License"); you may not use this file
except in compliance<a name="line.7"></a>
-<span class="sourceLineNo">008</span> * with the License. You may obtain a
copy of the License at<a name="line.8"></a>
-<span class="sourceLineNo">009</span> *<a name="line.9"></a>
-<span class="sourceLineNo">010</span> *
http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
-<span class="sourceLineNo">011</span> *<a name="line.11"></a>
-<span class="sourceLineNo">012</span> * Unless required by applicable law or
agreed to in writing, software<a name="line.12"></a>
-<span class="sourceLineNo">013</span> * distributed under the License is
distributed on an "AS IS" BASIS,<a name="line.13"></a>
-<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF
ANY KIND, either express or implied.<a name="line.14"></a>
-<span class="sourceLineNo">015</span> * See the License for the specific
language governing permissions and<a name="line.15"></a>
-<span class="sourceLineNo">016</span> * limitations under the License.<a
name="line.16"></a>
-<span class="sourceLineNo">017</span> */<a name="line.17"></a>
-<span class="sourceLineNo">018</span><a name="line.18"></a>
-<span class="sourceLineNo">019</span>package
org.apache.hadoop.hbase.master.procedure;<a name="line.19"></a>
-<span class="sourceLineNo">020</span><a name="line.20"></a>
-<span class="sourceLineNo">021</span>import java.io.IOException;<a
name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.io.InputStream;<a
name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.io.InterruptedIOException;<a
name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.io.OutputStream;<a
name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.Map;<a
name="line.25"></a>
-<span class="sourceLineNo">026</span>import
java.util.concurrent.atomic.AtomicBoolean;<a name="line.26"></a>
-<span class="sourceLineNo">027</span><a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.commons.logging.Log;<a
name="line.28"></a>
-<span class="sourceLineNo">029</span>import
org.apache.commons.logging.LogFactory;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import
org.apache.hadoop.hbase.HRegionInfo;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import
org.apache.hadoop.hbase.RegionLoad;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import
org.apache.hadoop.hbase.ServerLoad;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import
org.apache.hadoop.hbase.ServerName;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import
org.apache.hadoop.hbase.TableName;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import
org.apache.hadoop.hbase.UnknownRegionException;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.exceptions.MergeRegionException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import
org.apache.hadoop.hbase.exceptions.RegionOpeningException;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import
org.apache.hadoop.hbase.master.assignment.AssignmentManager;<a
name="line.39"></a>
-<span class="sourceLineNo">040</span>import
org.apache.hadoop.hbase.master.assignment.RegionStates;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.master.CatalogJanitor;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.master.RegionPlan;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import
org.apache.hadoop.hbase.master.RegionState;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import
org.apache.hadoop.hbase.master.ServerManager;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import
org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a
name="line.46"></a>
-<span class="sourceLineNo">047</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DispatchMergingRegionsState;<a
name="line.47"></a>
-<span class="sourceLineNo">048</span>import
org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.48"></a>
-<span class="sourceLineNo">049</span><a name="line.49"></a>
-<span class="sourceLineNo">050</span>/**<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * The procedure to Merge a region in a
table.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> */<a name="line.52"></a>
-<span class="sourceLineNo">053</span>@InterfaceAudience.Private<a
name="line.53"></a>
-<span class="sourceLineNo">054</span>public class
DispatchMergingRegionsProcedure<a name="line.54"></a>
-<span class="sourceLineNo">055</span> extends
AbstractStateMachineTableProcedure<DispatchMergingRegionsState> {<a
name="line.55"></a>
-<span class="sourceLineNo">056</span> private static final Log LOG =
LogFactory.getLog(DispatchMergingRegionsProcedure.class);<a name="line.56"></a>
-<span class="sourceLineNo">057</span><a name="line.57"></a>
-<span class="sourceLineNo">058</span> private final AtomicBoolean aborted =
new AtomicBoolean(false);<a name="line.58"></a>
-<span class="sourceLineNo">059</span> private Boolean traceEnabled;<a
name="line.59"></a>
-<span class="sourceLineNo">060</span> private AssignmentManager
assignmentManager;<a name="line.60"></a>
-<span class="sourceLineNo">061</span> private int timeout;<a
name="line.61"></a>
-<span class="sourceLineNo">062</span> private ServerName regionLocation;<a
name="line.62"></a>
-<span class="sourceLineNo">063</span> private String
regionsToMergeListFullName;<a name="line.63"></a>
-<span class="sourceLineNo">064</span> private String
regionsToMergeListEncodedName;<a name="line.64"></a>
-<span class="sourceLineNo">065</span><a name="line.65"></a>
-<span class="sourceLineNo">066</span> private TableName tableName;<a
name="line.66"></a>
-<span class="sourceLineNo">067</span> private HRegionInfo []
regionsToMerge;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> private boolean forcible;<a
name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span> public
DispatchMergingRegionsProcedure() {<a name="line.70"></a>
-<span class="sourceLineNo">071</span> this.traceEnabled =
isTraceEnabled();<a name="line.71"></a>
-<span class="sourceLineNo">072</span> this.assignmentManager = null;<a
name="line.72"></a>
-<span class="sourceLineNo">073</span> this.timeout = -1;<a
name="line.73"></a>
-<span class="sourceLineNo">074</span> this.regionLocation = null;<a
name="line.74"></a>
-<span class="sourceLineNo">075</span> this.regionsToMergeListFullName =
null;<a name="line.75"></a>
-<span class="sourceLineNo">076</span> this.regionsToMergeListEncodedName =
null;<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> public
DispatchMergingRegionsProcedure(<a name="line.79"></a>
-<span class="sourceLineNo">080</span> final MasterProcedureEnv env,<a
name="line.80"></a>
-<span class="sourceLineNo">081</span> final TableName tableName,<a
name="line.81"></a>
-<span class="sourceLineNo">082</span> final HRegionInfo []
regionsToMerge,<a name="line.82"></a>
-<span class="sourceLineNo">083</span> final boolean forcible) {<a
name="line.83"></a>
-<span class="sourceLineNo">084</span> super(env);<a name="line.84"></a>
-<span class="sourceLineNo">085</span> this.traceEnabled =
isTraceEnabled();<a name="line.85"></a>
-<span class="sourceLineNo">086</span> this.assignmentManager =
getAssignmentManager(env);<a name="line.86"></a>
-<span class="sourceLineNo">087</span> this.tableName = tableName;<a
name="line.87"></a>
-<span class="sourceLineNo">088</span> // For now, we only merge 2 regions.
It could be extended to more than 2 regions in<a name="line.88"></a>
-<span class="sourceLineNo">089</span> // the future.<a name="line.89"></a>
-<span class="sourceLineNo">090</span> assert(regionsToMerge.length == 2);<a
name="line.90"></a>
-<span class="sourceLineNo">091</span> this.regionsToMerge =
regionsToMerge;<a name="line.91"></a>
-<span class="sourceLineNo">092</span> this.forcible = forcible;<a
name="line.92"></a>
-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span> this.timeout = -1;<a
name="line.94"></a>
-<span class="sourceLineNo">095</span> this.regionsToMergeListFullName =
getRegionsToMergeListFullNameString();<a name="line.95"></a>
-<span class="sourceLineNo">096</span> this.regionsToMergeListEncodedName =
getRegionsToMergeListEncodedNameString();<a name="line.96"></a>
-<span class="sourceLineNo">097</span> }<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span> @Override<a name="line.99"></a>
-<span class="sourceLineNo">100</span> protected Flow executeFromState(<a
name="line.100"></a>
-<span class="sourceLineNo">101</span> final MasterProcedureEnv env,<a
name="line.101"></a>
-<span class="sourceLineNo">102</span> final DispatchMergingRegionsState
state) throws InterruptedException {<a name="line.102"></a>
-<span class="sourceLineNo">103</span> if (isTraceEnabled()) {<a
name="line.103"></a>
-<span class="sourceLineNo">104</span> LOG.trace(this + " execute state="
+ state);<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> try {<a name="line.107"></a>
-<span class="sourceLineNo">108</span> switch (state) {<a
name="line.108"></a>
-<span class="sourceLineNo">109</span> case
DISPATCH_MERGING_REGIONS_PREPARE:<a name="line.109"></a>
-<span class="sourceLineNo">110</span> prepareMergeRegion(env);<a
name="line.110"></a>
-<span class="sourceLineNo">111</span>
setNextState(DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_PRE_OPERATION);<a
name="line.111"></a>
-<span class="sourceLineNo">112</span> break;<a name="line.112"></a>
-<span class="sourceLineNo">113</span> case
DISPATCH_MERGING_REGIONS_PRE_OPERATION:<a name="line.113"></a>
-<span class="sourceLineNo">114</span> //Unused for now - reserve to add
preMerge coprocessor in the future<a name="line.114"></a>
-<span class="sourceLineNo">115</span>
setNextState(DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_MOVE_REGION_TO_SAME_RS);<a
name="line.115"></a>
-<span class="sourceLineNo">116</span> break;<a name="line.116"></a>
-<span class="sourceLineNo">117</span> case
DISPATCH_MERGING_REGIONS_MOVE_REGION_TO_SAME_RS:<a name="line.117"></a>
-<span class="sourceLineNo">118</span> if (MoveRegionsToSameRS(env)) {<a
name="line.118"></a>
-<span class="sourceLineNo">119</span>
setNextState(DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_DO_MERGE_IN_RS);<a
name="line.119"></a>
-<span class="sourceLineNo">120</span> } else {<a name="line.120"></a>
-<span class="sourceLineNo">121</span> LOG.info("Cancel merging
regions " + getRegionsToMergeListFullNameString()<a name="line.121"></a>
-<span class="sourceLineNo">122</span> + ", because can't move them
to the same RS");<a name="line.122"></a>
-<span class="sourceLineNo">123</span>
setNextState(DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_POST_OPERATION);<a
name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span> break;<a name="line.125"></a>
-<span class="sourceLineNo">126</span> case
DISPATCH_MERGING_REGIONS_DO_MERGE_IN_RS:<a name="line.126"></a>
-<span class="sourceLineNo">127</span> doMergeInRS(env);<a
name="line.127"></a>
-<span class="sourceLineNo">128</span>
setNextState(DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_POST_OPERATION);<a
name="line.128"></a>
-<span class="sourceLineNo">129</span> break;<a name="line.129"></a>
-<span class="sourceLineNo">130</span> case
DISPATCH_MERGING_REGIONS_POST_OPERATION:<a name="line.130"></a>
-<span class="sourceLineNo">131</span> //Unused for now - reserve to add
postCompletedMerge coprocessor in the future<a name="line.131"></a>
-<span class="sourceLineNo">132</span> return Flow.NO_MORE_STATE;<a
name="line.132"></a>
-<span class="sourceLineNo">133</span> default:<a name="line.133"></a>
-<span class="sourceLineNo">134</span> throw new
UnsupportedOperationException(this + " unhandled state=" + state);<a
name="line.134"></a>
-<span class="sourceLineNo">135</span> }<a name="line.135"></a>
-<span class="sourceLineNo">136</span> } catch (IOException e) {<a
name="line.136"></a>
-<span class="sourceLineNo">137</span> LOG.warn("Error trying to merge
regions " + getRegionsToMergeListFullNameString() +<a name="line.137"></a>
-<span class="sourceLineNo">138</span> " in the table " + tableName + "
(in state=" + state + ")", e);<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span> setFailure("master-merge-regions",
e);<a name="line.140"></a>
-<span class="sourceLineNo">141</span> }<a name="line.141"></a>
-<span class="sourceLineNo">142</span> return Flow.HAS_MORE_STATE;<a
name="line.142"></a>
-<span class="sourceLineNo">143</span> }<a name="line.143"></a>
-<span class="sourceLineNo">144</span><a name="line.144"></a>
-<span class="sourceLineNo">145</span> @Override<a name="line.145"></a>
-<span class="sourceLineNo">146</span> protected void rollbackState(<a
name="line.146"></a>
-<span class="sourceLineNo">147</span> final MasterProcedureEnv env,<a
name="line.147"></a>
-<span class="sourceLineNo">148</span> final DispatchMergingRegionsState
state) throws IOException, InterruptedException {<a name="line.148"></a>
-<span class="sourceLineNo">149</span> if (isTraceEnabled()) {<a
name="line.149"></a>
-<span class="sourceLineNo">150</span> LOG.trace(this + " rollback state="
+ state);<a name="line.150"></a>
-<span class="sourceLineNo">151</span> }<a name="line.151"></a>
-<span class="sourceLineNo">152</span><a name="line.152"></a>
-<span class="sourceLineNo">153</span> try {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> switch (state) {<a
name="line.154"></a>
-<span class="sourceLineNo">155</span> case
DISPATCH_MERGING_REGIONS_POST_OPERATION:<a name="line.155"></a>
-<span class="sourceLineNo">156</span> case
DISPATCH_MERGING_REGIONS_DO_MERGE_IN_RS:<a name="line.156"></a>
-<span class="sourceLineNo">157</span> String msg = this + " We are in
the " + state + " state."<a name="line.157"></a>
-<span class="sourceLineNo">158</span> + " It is complicated to
rollback the merge operation that region server is working on."<a
name="line.158"></a>
-<span class="sourceLineNo">159</span> + " Rollback is not supported
and we should let the merge operation to complete";<a name="line.159"></a>
-<span class="sourceLineNo">160</span> LOG.warn(msg);<a
name="line.160"></a>
-<span class="sourceLineNo">161</span> // PONR<a name="line.161"></a>
-<span class="sourceLineNo">162</span> throw new
UnsupportedOperationException(this + " unhandled state=" + state);<a
name="line.162"></a>
-<span class="sourceLineNo">163</span> case
DISPATCH_MERGING_REGIONS_MOVE_REGION_TO_SAME_RS:<a name="line.163"></a>
-<span class="sourceLineNo">164</span> break; // nothing to rollback<a
name="line.164"></a>
-<span class="sourceLineNo">165</span> case
DISPATCH_MERGING_REGIONS_PRE_OPERATION:<a name="line.165"></a>
-<span class="sourceLineNo">166</span> break; // nothing to rollback<a
name="line.166"></a>
-<span class="sourceLineNo">167</span> case
DISPATCH_MERGING_REGIONS_PREPARE:<a name="line.167"></a>
-<span class="sourceLineNo">168</span> break; // nothing to rollback<a
name="line.168"></a>
-<span class="sourceLineNo">169</span> default:<a name="line.169"></a>
-<span class="sourceLineNo">170</span> throw new
UnsupportedOperationException(this + " unhandled state=" + state);<a
name="line.170"></a>
-<span class="sourceLineNo">171</span> }<a name="line.171"></a>
-<span class="sourceLineNo">172</span> } catch (Exception e) {<a
name="line.172"></a>
-<span class="sourceLineNo">173</span> // This will be retried. Unless
there is a bug in the code,<a name="line.173"></a>
-<span class="sourceLineNo">174</span> // this should be just a "temporary
error" (e.g. network down)<a name="line.174"></a>
-<span class="sourceLineNo">175</span> LOG.warn("Failed rollback attempt
step " + state + " for merging the regions "<a name="line.175"></a>
-<span class="sourceLineNo">176</span> +
getRegionsToMergeListFullNameString() + " in table " + tableName, e);<a
name="line.176"></a>
-<span class="sourceLineNo">177</span> throw 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> @Override<a name="line.181"></a>
-<span class="sourceLineNo">182</span> protected DispatchMergingRegionsState
getState(final int stateId) {<a name="line.182"></a>
-<span class="sourceLineNo">183</span> return
DispatchMergingRegionsState.valueOf(stateId);<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> @Override<a name="line.186"></a>
-<span class="sourceLineNo">187</span> protected int getStateId(final
DispatchMergingRegionsState state) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> return state.getNumber();<a
name="line.188"></a>
-<span class="sourceLineNo">189</span> }<a name="line.189"></a>
-<span class="sourceLineNo">190</span><a name="line.190"></a>
-<span class="sourceLineNo">191</span> @Override<a name="line.191"></a>
-<span class="sourceLineNo">192</span> protected DispatchMergingRegionsState
getInitialState() {<a name="line.192"></a>
-<span class="sourceLineNo">193</span> return
DispatchMergingRegionsState.DISPATCH_MERGING_REGIONS_PREPARE;<a
name="line.193"></a>
-<span class="sourceLineNo">194</span> }<a name="line.194"></a>
-<span class="sourceLineNo">195</span><a name="line.195"></a>
-<span class="sourceLineNo">196</span> /*<a name="line.196"></a>
-<span class="sourceLineNo">197</span> * Check whether we are in the state
that can be rollback<a name="line.197"></a>
-<span class="sourceLineNo">198</span> */<a name="line.198"></a>
-<span class="sourceLineNo">199</span> @Override<a name="line.199"></a>
-<span class="sourceLineNo">200</span> protected boolean
isRollbackSupported(final DispatchMergingRegionsState state) {<a
name="line.200"></a>
-<span class="sourceLineNo">201</span> switch (state) {<a
name="line.201"></a>
-<span class="sourceLineNo">202</span> case
DISPATCH_MERGING_REGIONS_POST_OPERATION:<a name="line.202"></a>
-<span class="sourceLineNo">203</span> case
DISPATCH_MERGING_REGIONS_DO_MERGE_IN_RS:<a name="line.203"></a>
-<span class="sourceLineNo">204</span> // It is not safe to rollback if
we reach to these states.<a name="line.204"></a>
-<span class="sourceLineNo">205</span> return false;<a
name="line.205"></a>
-<span class="sourceLineNo">206</span> default:<a name="line.206"></a>
-<span class="sourceLineNo">207</span> break;<a name="line.207"></a>
-<span class="sourceLineNo">208</span> }<a name="line.208"></a>
-<span class="sourceLineNo">209</span> return true;<a name="line.209"></a>
-<span class="sourceLineNo">210</span> }<a name="line.210"></a>
-<span class="sourceLineNo">211</span><a name="line.211"></a>
-<span class="sourceLineNo">212</span> @Override<a name="line.212"></a>
-<span class="sourceLineNo">213</span> public void serializeStateData(final
OutputStream stream) throws IOException {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> super.serializeStateData(stream);<a
name="line.214"></a>
-<span class="sourceLineNo">215</span><a name="line.215"></a>
-<span class="sourceLineNo">216</span>
MasterProcedureProtos.DispatchMergingRegionsStateData.Builder
dispatchMergingRegionsMsg =<a name="line.216"></a>
-<span class="sourceLineNo">217</span>
MasterProcedureProtos.DispatchMergingRegionsStateData.newBuilder()<a
name="line.217"></a>
-<span class="sourceLineNo">218</span>
.setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a
name="line.218"></a>
-<span class="sourceLineNo">219</span>
.setTableName(ProtobufUtil.toProtoTableName(tableName))<a name="line.219"></a>
-<span class="sourceLineNo">220</span> .setForcible(forcible);<a
name="line.220"></a>
-<span class="sourceLineNo">221</span> for (HRegionInfo hri: regionsToMerge)
{<a name="line.221"></a>
-<span class="sourceLineNo">222</span>
dispatchMergingRegionsMsg.addRegionInfo(HRegionInfo.convert(hri));<a
name="line.222"></a>
-<span class="sourceLineNo">223</span> }<a name="line.223"></a>
-<span class="sourceLineNo">224</span>
dispatchMergingRegionsMsg.build().writeDelimitedTo(stream);<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> @Override<a name="line.227"></a>
-<span class="sourceLineNo">228</span> public void deserializeStateData(final
InputStream stream) throws IOException {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> super.deserializeStateData(stream);<a
name="line.229"></a>
-<span class="sourceLineNo">230</span><a name="line.230"></a>
-<span class="sourceLineNo">231</span>
MasterProcedureProtos.DispatchMergingRegionsStateData dispatchMergingRegionsMsg
=<a name="line.231"></a>
-<span class="sourceLineNo">232</span>
MasterProcedureProtos.DispatchMergingRegionsStateData.parseDelimitedFrom(stream);<a
name="line.232"></a>
-<span class="sourceLineNo">233</span>
setUser(MasterProcedureUtil.toUserInfo(dispatchMergingRegionsMsg.getUserInfo()));<a
name="line.233"></a>
-<span class="sourceLineNo">234</span> tableName =
ProtobufUtil.toTableName(dispatchMergingRegionsMsg.getTableName());<a
name="line.234"></a>
-<span class="sourceLineNo">235</span><a name="line.235"></a>
-<span class="sourceLineNo">236</span>
assert(dispatchMergingRegionsMsg.getRegionInfoCount() == 2);<a
name="line.236"></a>
-<span class="sourceLineNo">237</span> regionsToMerge = new
HRegionInfo[dispatchMergingRegionsMsg.getRegionInfoCount()];<a
name="line.237"></a>
-<span class="sourceLineNo">238</span> for (int i = 0; i <
regionsToMerge.length; i++) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> regionsToMerge[i] =
HRegionInfo.convert(dispatchMergingRegionsMsg.getRegionInfo(i));<a
name="line.239"></a>
-<span class="sourceLineNo">240</span> }<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
-<span class="sourceLineNo">242</span><a name="line.242"></a>
-<span class="sourceLineNo">243</span> @Override<a name="line.243"></a>
-<span class="sourceLineNo">244</span> public void
toStringClassDetails(StringBuilder sb) {<a name="line.244"></a>
-<span class="sourceLineNo">245</span>
sb.append(getClass().getSimpleName());<a name="line.245"></a>
-<span class="sourceLineNo">246</span> sb.append(" (table=");<a
name="line.246"></a>
-<span class="sourceLineNo">247</span> sb.append(tableName);<a
name="line.247"></a>
-<span class="sourceLineNo">248</span> sb.append(" regions=");<a
name="line.248"></a>
-<span class="sourceLineNo">249</span>
sb.append(getRegionsToMergeListFullNameString());<a name="line.249"></a>
-<span class="sourceLineNo">250</span> sb.append(" forcible=");<a
name="line.250"></a>
-<span class="sourceLineNo">251</span> sb.append(forcible);<a
name="line.251"></a>
-<span class="sourceLineNo">252</span> sb.append(")");<a name="line.252"></a>
-<span class="sourceLineNo">253</span> }<a name="line.253"></a>
-<span class="sourceLineNo">254</span><a name="line.254"></a>
-<span class="sourceLineNo">255</span> @Override<a name="line.255"></a>
-<span class="sourceLineNo">256</span> protected LockState acquireLock(final
MasterProcedureEnv env) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> if (!getTableName().isSystemTable()
&& env.waitInitialized(this)) {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> return LockState.LOCK_EVENT_WAIT;<a
name="line.258"></a>
-<span class="sourceLineNo">259</span> }<a name="line.259"></a>
-<span class="sourceLineNo">260</span> if
(env.getProcedureScheduler().waitRegions(this, getTableName(), regionsToMerge))
{<a name="line.260"></a>
-<span class="sourceLineNo">261</span> return LockState.LOCK_EVENT_WAIT;<a
name="line.261"></a>
-<span class="sourceLineNo">262</span> }<a name="line.262"></a>
-<span class="sourceLineNo">263</span> return LockState.LOCK_ACQUIRED;<a
name="line.263"></a>
-<span class="sourceLineNo">264</span> }<a name="line.264"></a>
-<span class="sourceLineNo">265</span><a name="line.265"></a>
-<span class="sourceLineNo">266</span> @Override<a name="line.266"></a>
-<span class="sourceLineNo">267</span> protected void releaseLock(final
MasterProcedureEnv env) {<a name="line.267"></a>
-<span class="sourceLineNo">268</span>
env.getProcedureScheduler().wakeRegions(this, getTableName(),
regionsToMerge[0], regionsToMerge[1]);<a name="line.268"></a>
-<span class="sourceLineNo">269</span> }<a name="line.269"></a>
-<span class="sourceLineNo">270</span><a name="line.270"></a>
-<span class="sourceLineNo">271</span> @Override<a name="line.271"></a>
-<span class="sourceLineNo">272</span> public TableName getTableName() {<a
name="line.272"></a>
-<span class="sourceLineNo">273</span> return tableName;<a
name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span><a name="line.275"></a>
-<span class="sourceLineNo">276</span> @Override<a name="line.276"></a>
-<span class="sourceLineNo">277</span> public TableOperationType
getTableOperationType() {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> return
TableOperationType.REGION_MERGE;<a name="line.278"></a>
-<span class="sourceLineNo">279</span> }<a name="line.279"></a>
-<span class="sourceLineNo">280</span><a name="line.280"></a>
-<span class="sourceLineNo">281</span> /**<a name="line.281"></a>
-<span class="sourceLineNo">282</span> * Prepare merge and do some check<a
name="line.282"></a>
-<span class="sourceLineNo">283</span> * @param env MasterProcedureEnv<a
name="line.283"></a>
-<span class="sourceLineNo">284</span> * @throws IOException<a
name="line.284"></a>
-<span class="sourceLineNo">285</span> */<a name="line.285"></a>
-<span class="sourceLineNo">286</span> private void prepareMergeRegion(final
MasterProcedureEnv env) throws IOException {<a name="line.286"></a>
-<span class="sourceLineNo">287</span> // Note: the following logic assumes
that we only have 2 regions to merge. In the future,<a name="line.287"></a>
-<span class="sourceLineNo">288</span> // if we want to extend to more than
2 regions, the code needs to modify a little bit.<a name="line.288"></a>
-<span class="sourceLineNo">289</span> //<a name="line.289"></a>
-<span class="sourceLineNo">290</span> CatalogJanitor catalogJanitor =
env.getMasterServices().getCatalogJanitor();<a name="line.290"></a>
-<span class="sourceLineNo">291</span> boolean regionAHasMergeQualifier =
!catalogJanitor.cleanMergeQualifier(regionsToMerge[0]);<a name="line.291"></a>
-<span class="sourceLineNo">292</span> if (regionAHasMergeQualifier<a
name="line.292"></a>
-<span class="sourceLineNo">293</span> ||
!catalogJanitor.cleanMergeQualifier(regionsToMerge[1])) {<a name="line.293"></a>
-<span class="sourceLineNo">294</span> String msg = "Skip merging regions
" + regionsToMerge[0].getRegionNameAsString()<a name="line.294"></a>
-<span class="sourceLineNo">295</span> + ", " +
regionsToMerge[1].getRegionNameAsString() + ", because region "<a
name="line.295"></a>
-<span class="sourceLineNo">296</span> + (regionAHasMergeQualifier ?
regionsToMerge[0].getEncodedName() : regionsToMerge[1]<a name="line.296"></a>
-<span class="sourceLineNo">297</span> .getEncodedName()) + " has
merge qualifier";<a name="line.297"></a>
-<span class="sourceLineNo">298</span> LOG.info(msg);<a
name="line.298"></a>
-<span class="sourceLineNo">299</span> throw new
MergeRegionException(msg);<a name="line.299"></a>
-<span class="sourceLineNo">300</span> }<a name="line.300"></a>
-<span class="sourceLineNo">301</span><a name="line.301"></a>
-<span class="sourceLineNo">302</span> RegionStates regionStates =
getAssignmentManager(env).getRegionStates();<a name="line.302"></a>
-<span class="sourceLineNo">303</span> RegionState regionStateA =
regionStates.getRegionState(regionsToMerge[0].getEncodedName());<a
name="line.303"></a>
-<span class="sourceLineNo">304</span> RegionState regionStateB =
regionStates.getRegionState(regionsToMerge[1].getEncodedName());<a
name="line.304"></a>
-<span class="sourceLineNo">305</span> if (regionStateA == null ||
regionStateB == null) {<a name="line.305"></a>
-<span class="sourceLineNo">306</span> throw new
UnknownRegionException(<a name="line.306"></a>
-<span class="sourceLineNo">307</span> regionStateA == null ?<a
name="line.307"></a>
-<span class="sourceLineNo">308</span>
regionsToMerge[0].getEncodedName() : regionsToMerge[1].getEncodedName());<a
name="line.308"></a>
-<span class="sourceLineNo">309</span> }<a name="line.309"></a>
-<span class="sourceLineNo">310</span><a name="line.310"></a>
-<span class="sourceLineNo">311</span> if (!regionStateA.isOpened() ||
!regionStateB.isOpened()) {<a name="line.311"></a>
-<span class="sourceLineNo">312</span> throw new MergeRegionException(<a
name="line.312"></a>
-<span class="sourceLineNo">313</span> "Unable to merge regions not
online " + regionStateA + ", " + regionStateB);<a name="line.313"></a>
-<span class="sourceLineNo">314</span> }<a name="line.314"></a>
-<span class="sourceLineNo">315</span><a name="line.315"></a>
-<span class="sourceLineNo">316</span> if
(regionsToMerge[0].getReplicaId() != HRegionInfo.DEFAULT_REPLICA_ID ||<a
name="line.316"></a>
-<span class="sourceLineNo">317</span>
regionsToMerge[1].getReplicaId() != HRegionInfo.DEFAULT_REPLICA_ID) {<a
name="line.317"></a>
-<span class="sourceLineNo">318</span> throw new
MergeRegionException("Can't merge non-default replicas");<a name="line.318"></a>
-<span class="sourceLineNo">319</span> }<a name="line.319"></a>
-<span class="sourceLineNo">320</span><a name="line.320"></a>
-<span class="sourceLineNo">321</span> if (!forcible &&
!HRegionInfo.areAdjacent(regionsToMerge[0], regionsToMerge[1])) {<a
name="line.321"></a>
-<span class="sourceLineNo">322</span> throw new MergeRegionException(<a
name="line.322"></a>
-<span class="sourceLineNo">323</span> "Unable to merge not adjacent
regions "<a name="line.323"></a>
-<span class="sourceLineNo">324</span> +
regionsToMerge[0].getRegionNameAsString() + ", "<a name="line.324"></a>
-<span class="sourceLineNo">325</span> +
regionsToMerge[1].getRegionNameAsString()<a name="line.325"></a>
-<span class="sourceLineNo">326</span> + " where forcible = " +
forcible);<a name="line.326"></a>
-<span class="sourceLineNo">327</span> }<a name="line.327"></a>
-<span class="sourceLineNo">328</span> }<a name="line.328"></a>
-<span class="sourceLineNo">329</span><a name="line.329"></a>
-<span class="sourceLineNo">330</span> /**<a name="line.330"></a>
-<span class="sourceLineNo">331</span> * Move all regions to the same region
server<a name="line.331"></a>
-<span class="sourceLineNo">332</span> * @param env MasterProcedureEnv<a
name="line.332"></a>
-<span class="sourceLineNo">333</span> * @return whether target regions
hosted by the same RS<a name="line.333"></a>
-<span class="sourceLineNo">334</span> * @throws IOException<a
name="line.334"></a>
-<span class="sourceLineNo">335</span> */<a name="line.335"></a>
-<span class="sourceLineNo">336</span> private boolean
MoveRegionsToSameRS(final MasterProcedureEnv env) throws IOException {<a
name="line.336"></a>
-<span class="sourceLineNo">337</span> // Make sure regions are on the same
regionserver before send merge<a name="line.337"></a>
-<span class="sourceLineNo">338</span> // regions request to region
server.<a name="line.338"></a>
-<span class="sourceLineNo">339</span> //<a name="line.339"></a>
-<span class="sourceLineNo">340</span> boolean onSameRS =
isRegionsOnTheSameServer(env);<a name="line.340"></a>
-<span class="sourceLineNo">341</span> if (!onSameRS) {<a
name="line.341"></a>
-<span class="sourceLineNo">342</span> // Note: the following logic
assumes that we only have 2 regions to merge. In the future,<a
name="line.342"></a>
-<span class="sourceLineNo">343</span> // if we want to extend to more
than 2 regions, the code needs to modify a little bit.<a name="line.343"></a>
-<span class="sourceLineNo">344</span> //<a name="line.344"></a>
-<span class="sourceLineNo">345</span> RegionStates regionStates =
getAssignmentManager(env).getRegionStates();<a name="line.345"></a>
-<span class="sourceLineNo">346</span> ServerName regionLocation2 =
regionStates.getRegionServerOfRegion(regionsToMerge[1]);<a name="line.346"></a>
-<span class="sourceLineNo">347</span><a name="line.347"></a>
-<span class="sourceLineNo">348</span> RegionLoad loadOfRegionA =
getRegionLoad(env, regionLocation, regionsToMerge[0]);<a name="line.348"></a>
-<span class="sourceLineNo">349</span> RegionLoad loadOfRegionB =
getRegionLoad(env, regionLocation2, regionsToMerge[1]);<a name="line.349"></a>
-<span class="sourceLineNo">350</span> if (loadOfRegionA != null
&& loadOfRegionB != null<a name="line.350"></a>
-<span class="sourceLineNo">351</span> &&
loadOfRegionA.getRequestsCount() < loadOfRegionB.getRequestsCount()) {<a
name="line.351"></a>
-<span class="sourceLineNo">352</span> // switch regionsToMerge[0] and
regionsToMerge[1]<a name="line.352"></a>
-<span class="sourceLineNo">353</span> HRegionInfo tmpRegion =
this.regionsToMerge[0];<a name="line.353"></a>
-<span class="sourceLineNo">354</span> this.regionsToMerge[0] =
this.regionsToMerge[1];<a name="line.354"></a>
-<span class="sourceLineNo">355</span> this.regionsToMerge[1] =
tmpRegion;<a name="line.355"></a>
-<span class="sourceLineNo">356</span> ServerName tmpLocation =
regionLocation;<a name="line.356"></a>
-<span class="sourceLineNo">357</span> regionLocation =
regionLocation2;<a name="line.357"></a>
-<span class="sourceLineNo">358</span> regionLocation2 = tmpLocation;<a
name="line.358"></a>
-<span class="sourceLineNo">359</span> }<a name="line.359"></a>
-<span class="sourceLineNo">360</span><a name="line.360"></a>
-<span class="sourceLineNo">361</span> long startTime =
EnvironmentEdgeManager.currentTime();<a name="line.361"></a>
-<span class="sourceLineNo">362</span><a name="line.362"></a>
-<span class="sourceLineNo">363</span> RegionPlan regionPlan = new
RegionPlan(regionsToMerge[1], regionLocation2, regionLocation);<a
name="line.363"></a>
-<span class="sourceLineNo">364</span> LOG.info("Moving regions to same
server for merge: " + regionPlan.toString());<a name="line.364"></a>
-<span class="sourceLineNo">365</span>
getAssignmentManager(env).moveAsync(regionPlan);<a name="line.365"></a>
-<span class="sourceLineNo">366</span> do {<a name="line.366"></a>
-<span class="sourceLineNo">367</span> try {<a name="line.367"></a>
-<span class="sourceLineNo">368</span> Thread.sleep(20);<a
name="line.368"></a>
-<span class="sourceLineNo">369</span> // Make sure check RIT first,
then get region location, otherwise<a name="line.369"></a>
-<span class="sourceLineNo">370</span> // we would make a wrong result
if region is online between getting<a name="line.370"></a>
-<span class="sourceLineNo">371</span> // region location and checking
RIT<a name="line.371"></a>
-<span class="sourceLineNo">372</span> boolean isRIT =
regionStates.isRegionInTransition(regionsToMerge[1]);<a name="line.372"></a>
-<span class="sourceLineNo">373</span> regionLocation2 =
regionStates.getRegionServerOfRegion(regionsToMerge[1]);<a name="line.373"></a>
-<span class="sourceLineNo">374</span> onSameRS =
regionLocation.equals(regionLocation2);<a name="line.374"></a>
-<span class="sourceLineNo">375</span> if (onSameRS || !isRIT) {<a
name="line.375"></a>
-<span class="sourceLineNo">376</span> // Regions are on the same
RS, or regionsToMerge[1] is not in<a name="line.376"></a>
-<span class="sourceLineNo">377</span> // RegionInTransition any
more<a name="line.377"></a>
-<span class="sourceLineNo">378</span> break;<a name="line.378"></a>
-<span class="sourceLineNo">379</span> }<a name="line.379"></a>
-<span class="sourceLineNo">380</span> } catch (InterruptedException e)
{<a name="line.380"></a>
-<span class="sourceLineNo">381</span> InterruptedIOException iioe =
new InterruptedIOException();<a name="line.381"></a>
-<span class="sourceLineNo">382</span> iioe.initCause(e);<a
name="line.382"></a>
-<span class="sourceLineNo">383</span> throw iioe;<a
name="line.383"></a>
-<span class="sourceLineNo">384</span> }<a name="line.384"></a>
-<span class="sourceLineNo">385</span> } while
((EnvironmentEdgeManager.currentTime() - startTime) <= getTimeout(env));<a
name="line.385"></a>
-<span class="sourceLineNo">386</span> }<a name="line.386"></a>
-<span class="sourceLineNo">387</span> return onSameRS;<a
name="line.387"></a>
-<span class="sourceLineNo">388</span> }<a name="line.388"></a>
-<span class="sourceLineNo">389</span><a name="line.389"></a>
-<span class="sourceLineNo">390</span> /**<a name="line.390"></a>
-<span class="sourceLineNo">391</span> * Do the real merge operation in the
region server that hosts regions<a name="line.391"></a>
-<span class="sourceLineNo">392</span> * @param env MasterProcedureEnv<a
name="line.392"></a>
-<span class="sourceLineNo">393</span> * @throws IOException<a
name="line.393"></a>
-<span class="sourceLineNo">394</span> */<a name="line.394"></a>
-<span class="sourceLineNo">395</span> private void doMergeInRS(final
MasterProcedureEnv env) throws IOException {<a name="line.395"></a>
-<span class="sourceLineNo">396</span> long duration = 0;<a
name="line.396"></a>
-<span class="sourceLineNo">397</span> long startTime =
EnvironmentEdgeManager.currentTime();<a name="line.397"></a>
-<span class="sourceLineNo">398</span> do {<a name="line.398"></a>
-<span class="sourceLineNo">399</span> try {<a name="line.399"></a>
-<span class="sourceLineNo">400</span> if (getServerName(env) == null)
{<a name="line.400"></a>
-<span class="sourceLineNo">401</span> // The merge probably already
happen. Check<a name="line.401"></a>
-<span class="sourceLineNo">402</span> RegionState regionState =
getAssignmentManager(env).getRegionStates().getRegionState(<a
name="line.402"></a>
-<span class="sourceLineNo">403</span>
regionsToMerge[0].getEncodedName());<a name="line.403"></a>
-<span class="sourceLineNo">404</span> if (regionState.isMerging() ||
regionState.isMerged()) {<a name="line.404"></a>
-<span class="sourceLineNo">405</span> LOG.info("Merge regions " +
getRegionsToMergeListEncodedNameString() +<a name="line.405"></a>
-<span class="sourceLineNo">406</span> " is in progress or
completed. No need to send a new request.");<a name="line.406"></a>
-<span class="sourceLineNo">407</span> } else {<a name="line.407"></a>
-<span class="sourceLineNo">408</span> LOG.warn("Cannot sending
merge to hosting server of the regions " +<a name="line.408"></a>
-<span class="sourceLineNo">409</span>
getRegionsToMergeListEncodedNameString() + " as the server is unknown");<a
name="line.409"></a>
-<span class="sourceLineNo">410</span> }<a name="line.410"></a>
-<span class="sourceLineNo">411</span> return;<a name="line.411"></a>
-<span class="sourceLineNo">412</span> }<a name="line.412"></a>
-<span class="sourceLineNo">413</span> // TODO: the following RPC call
is not idempotent. Multiple calls (eg. after master<a name="line.413"></a>
-<span class="sourceLineNo">414</span> // failover, re-execute this
step) could result in some exception thrown that does not<a name="line.414"></a>
-<span class="sourceLineNo">415</span> // paint the correct picture.
This behavior is on-par with old releases. Improvement<a name="line.415"></a>
-<span class="sourceLineNo">416</span> // could happen in the future.<a
name="line.416"></a>
-<span class="sourceLineNo">417</span>
env.getMasterServices().getServerManager().sendRegionsMerge(<a
name="line.417"></a>
-<span class="sourceLineNo">418</span> getServerName(env),<a
name="line.418"></a>
-<span class="sourceLineNo">419</span> regionsToMerge[0],<a
name="line.419"></a>
-<span class="sourceLineNo">420</span> regionsToMerge[1],<a
name="line.420"></a>
-<span class="sourceLineNo">421</span> forcible,<a name="line.421"></a>
-<span class="sourceLineNo">422</span> getUser());<a
name="line.422"></a>
-<span class="sourceLineNo">423</span> LOG.info("Sent merge to server "
+ getServerName(env) + " for region " +<a name="line.423"></a>
-<span class="sourceLineNo">424</span>
getRegionsToMergeListEncodedNameString() + ", forcible=" + forcible);<a
name="line.424"></a>
-<span class="sourceLineNo">425</span> return;<a name="line.425"></a>
-<span class="sourceLineNo">426</span> } catch (RegionOpeningException
roe) {<a name="line.426"></a>
-<span class="sourceLineNo">427</span> // Do a retry since region should
be online on RS immediately<a name="line.427"></a>
-<span class="sourceLineNo">428</span> LOG.warn("Failed mergering
regions in " + getServerName(env) + ", retrying...", roe);<a
name="line.428"></a>
-<span class="sourceLineNo">429</span> } catch (Exception ie) {<a
name="line.429"></a>
-<span class="sourceLineNo">430</span> LOG.warn("Failed sending merge to
" + getServerName(env) + " for regions " +<a name="line.430"></a>
-<span class="sourceLineNo">431</span>
getRegionsToMergeListEncodedNameString() + ", forcible=" + forcible, ie);<a
name="line.431"></a>
-<span class="sourceLineNo">432</span> return;<a name="line.432"></a>
-<span class="sourceLineNo">433</span> }<a name="line.433"></a>
-<span class="sourceLineNo">434</span> } while ((duration =
EnvironmentEdgeManager.currentTime() - startTime) <= getTimeout(env));<a
name="line.434"></a>
-<span class="sourceLineNo">435</span><a name="line.435"></a>
-<span class="sourceLineNo">436</span> // If we reaches here, it means that
we get timed out.<a name="line.436"></a>
-<span class="sourceLineNo">437</span> String msg = "Failed sending merge to
" + getServerName(env) + " after " + duration + "ms";<a name="line.437"></a>
-<span class="sourceLineNo">438</span> LOG.warn(msg);<a name="line.438"></a>
-<span class="sourceLineNo">439</span> throw new IOException(msg);<a
name="line.439"></a>
-<span class="sourceLineNo">440</span> }<a name="line.440"></a>
-<span class="sourceLineNo">441</span><a name="line.441"></a>
-<span class="sourceLineNo">442</span> private RegionLoad getRegionLoad(<a
name="line.442"></a>
-<span class="sourceLineNo">443</span> final MasterProcedureEnv env,<a
name="line.443"></a>
-<span class="sourceLineNo">444</span> final ServerName sn,<a
name="line.444"></a>
-<span class="sourceLineNo">445</span> final HRegionInfo hri) {<a
name="line.445"></a>
-<span class="sourceLineNo">446</span> ServerManager serverManager =
env.getMasterServices().getServerManager();<a name="line.446"></a>
-<span class="sourceLineNo">447</span> ServerLoad load =
serverManager.getLoad(sn);<a name="line.447"></a>
-<span class="sourceLineNo">448</span> if (load != null) {<a
name="line.448"></a>
-<span class="sourceLineNo">449</span> Map<byte[], RegionLoad>
regionsLoad = load.getRegionsLoad();<a name="line.449"></a>
-<span class="sourceLineNo">450</span> if (regionsLoad != null) {<a
name="line.450"></a>
-<span class="sourceLineNo">451</span> return
regionsLoad.get(hri.getRegionName());<a name="line.451"></a>
-<span class="sourceLineNo">452</span> }<a name="line.452"></a>
-<span class="sourceLineNo">453</span> }<a name="line.453"></a>
-<span class="sourceLineNo">454</span> return null;<a name="line.454"></a>
-<span class="sourceLineNo">455</span> }<a name="line.455"></a>
-<span class="sourceLineNo">456</span><a name="line.456"></a>
-<span class="sourceLineNo">457</span> /**<a name="line.457"></a>
-<span class="sourceLineNo">458</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.458"></a>
-<span class="sourceLineNo">459</span> * retrieve it.<a name="line.459"></a>
-<span class="sourceLineNo">460</span> * @param env MasterProcedureEnv<a
name="line.460"></a>
-<span class="sourceLineNo">461</span> * @return whether target regions
hosted by the same RS<a name="line.461"></a>
-<span class="sourceLineNo">462</span> */<a name="line.462"></a>
-<span class="sourceLineNo">463</span> private boolean
isRegionsOnTheSameServer(final MasterProcedureEnv env) throws IOException{<a
name="line.463"></a>
-<span class="sourceLineNo">464</span> Boolean onSameRS = true;<a
name="line.464"></a>
-<span class="sourceLineNo">465</span> int i = 0;<a name="line.465"></a>
-<span class="sourceLineNo">466</span> RegionStates regionStates =
getAssignmentManager(env).getRegionStates();<a name="line.466"></a>
-<span class="sourceLineNo">467</span> regionLocation =
regionStates.getRegionServerOfRegion(regionsToMerge[i]);<a name="line.467"></a>
-<span class="sourceLineNo">468</span> if (regionLocation != null) {<a
name="line.468"></a>
-<span class="sourceLineNo">469</span> for(i = 1; i <
regionsToMerge.length; i++) {<a name="line.469"></a>
-<span class="sourceLineNo">470</span> ServerName regionLocation2 =
regionStates.getRegionServerOfRegion(regionsToMerge[i]);<a name="line.470"></a>
-<span class="sourceLineNo">471</span> if (regionLocation2 != null) {<a
name="line.471"></a>
-<span class="sourceLineNo">472</span> if (onSameRS) {<a
name="line.472"></a>
-<span class="sourceLineNo">473</span> onSameRS =
regionLocation.equals(regionLocation2);<a name="line.473"></a>
-<span class="sourceLineNo">474</span> }<a name="line.474"></a>
-<span class="sourceLineNo">475</span> } else {<a name="line.475"></a>
-<span class="sourceLineNo">476</span> // At least one region is not
online, merge will fail, no need to continue.<a name="line.476"></a>
-<span class="sourceLineNo">477</span> break;<a name="line.477"></a>
-<span class="sourceLineNo">478</span> }<a name="line.478"></a>
-<span class="sourceLineNo">479</span> }<a name="line.479"></a>
-<span class="sourceLineNo">480</span> if (i == regionsToMerge.length) {<a
name="line.480"></a>
-<span class="sourceLineNo">481</span> // Finish checking all regions,
return the result;<a name="line.481"></a>
-<span class="sourceLineNo">482</span> return onSameRS;<a
name="line.482"></a>
-<span class="sourceLineNo">483</span> }<a name="line.483"></a>
-<span class="sourceLineNo">484</span> }<a name="line.484"></a>
-<span class="sourceLineNo">485</span><a name="line.485"></a>
-<span class="sourceLineNo">486</span> // If reaching here, at least one
region is not online.<a name="line.486"></a>
-<span class="sourceLineNo">487</span> String msg = "Skip merging regions "
+ getRegionsToMergeListFullNameString() +<a name="line.487"></a>
-<span class="sourceLineNo">488</span> ", because region " +
regionsToMerge[i].getEncodedName() + " is not online now.";<a
name="line.488"></a>
-<span class="sourceLineNo">489</span> LOG.warn(msg);<a name="line.489"></a>
-<span class="sourceLineNo">490</span> throw new IOException(msg);<a
name="line.490"></a>
-<span class="sourceLineNo">491</span> }<a name="line.491"></a>
-<span class="sourceLineNo">492</span><a name="line.492"></a>
-<span class="sourceLineNo">493</span> /**<a name="line.493"></a>
-<span class="sourceLineNo">494</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.494"></a>
-<span class="sourceLineNo">495</span> * retrieve it.<a name="line.495"></a>
-<span class="sourceLineNo">496</span> * @param env MasterProcedureEnv<a
name="line.496"></a>
-<span class="sourceLineNo">497</span> * @return assignmentManager<a
name="line.497"></a>
-<span class="sourceLineNo">498</span> */<a name="line.498"></a>
-<span class="sourceLineNo">499</span> private AssignmentManager
getAssignmentManager(final MasterProcedureEnv env) {<a name="line.499"></a>
-<span class="sourceLineNo">500</span> if (assignmentManager == null) {<a
name="line.500"></a>
-<span class="sourceLineNo">501</span> assignmentManager =
env.getMasterServices().getAssignmentManager();<a name="line.501"></a>
-<span class="sourceLineNo">502</span> }<a name="line.502"></a>
-<span class="sourceLineNo">503</span> return assignmentManager;<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> /**<a name="line.506"></a>
-<span class="sourceLineNo">507</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.507"></a>
-<span class="sourceLineNo">508</span> * retrieve it.<a name="line.508"></a>
-<span class="sourceLineNo">509</span> * @param env MasterProcedureEnv<a
name="line.509"></a>
-<span class="sourceLineNo">510</span> * @return timeout value<a
name="line.510"></a>
-<span class="sourceLineNo">511</span> */<a name="line.511"></a>
-<span class="sourceLineNo">512</span> private int getTimeout(final
MasterProcedureEnv env) {<a name="line.512"></a>
-<span class="sourceLineNo">513</span> if (timeout == -1) {<a
name="line.513"></a>
-<span class="sourceLineNo">514</span> timeout =
env.getMasterConfiguration().getInt(<a name="line.514"></a>
-<span class="sourceLineNo">515</span>
"hbase.master.regionmerge.timeout", regionsToMerge.length * 60 * 1000);<a
name="line.515"></a>
-<span class="sourceLineNo">516</span> }<a name="line.516"></a>
-<span class="sourceLineNo">517</span> return timeout;<a name="line.517"></a>
-<span class="sourceLineNo">518</span> }<a name="line.518"></a>
-<span class="sourceLineNo">519</span><a name="line.519"></a>
-<span class="sourceLineNo">520</span> /**<a name="line.520"></a>
-<span class="sourceLineNo">521</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.521"></a>
-<span class="sourceLineNo">522</span> * retrieve it.<a name="line.522"></a>
-<span class="sourceLineNo">523</span> * @param env MasterProcedureEnv<a
name="line.523"></a>
-<span class="sourceLineNo">524</span> * @return serverName<a
name="line.524"></a>
-<span class="sourceLineNo">525</span> */<a name="line.525"></a>
-<span class="sourceLineNo">526</span> private ServerName getServerName(final
MasterProcedureEnv env) {<a name="line.526"></a>
-<span class="sourceLineNo">527</span> if (regionLocation == null) {<a
name="line.527"></a>
-<span class="sourceLineNo">528</span> regionLocation =<a
name="line.528"></a>
-<span class="sourceLineNo">529</span>
getAssignmentManager(env).getRegionStates().getRegionServerOfRegion(regionsToMerge[0]);<a
name="line.529"></a>
-<span class="sourceLineNo">530</span> }<a name="line.530"></a>
-<span class="sourceLineNo">531</span> return regionLocation;<a
name="line.531"></a>
-<span class="sourceLineNo">532</span> }<a name="line.532"></a>
-<span class="sourceLineNo">533</span><a name="line.533"></a>
-<span class="sourceLineNo">534</span> /**<a name="line.534"></a>
-<span class="sourceLineNo">535</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.535"></a>
-<span class="sourceLineNo">536</span> * retrieve it.<a name="line.536"></a>
-<span class="sourceLineNo">537</span> * @param fullName whether return only
encoded name<a name="line.537"></a>
-<span class="sourceLineNo">538</span> * @return region names in a list<a
name="line.538"></a>
-<span class="sourceLineNo">539</span> */<a name="line.539"></a>
-<span class="sourceLineNo">540</span> private String
getRegionsToMergeListFullNameString() {<a name="line.540"></a>
-<span class="sourceLineNo">541</span> if (regionsToMergeListFullName ==
null) {<a name="line.541"></a>
-<span class="sourceLineNo">542</span> StringBuilder sb = new
StringBuilder("[");<a name="line.542"></a>
-<span class="sourceLineNo">543</span> int i = 0;<a name="line.543"></a>
-<span class="sourceLineNo">544</span> while(i < regionsToMerge.length
- 1) {<a name="line.544"></a>
-<span class="sourceLineNo">545</span>
sb.append(regionsToMerge[i].getRegionNameAsString() + ", ");<a
name="line.545"></a>
-<span class="sourceLineNo">546</span> i++;<a name="line.546"></a>
-<span class="sourceLineNo">547</span> }<a name="line.547"></a>
-<span class="sourceLineNo">548</span>
sb.append(regionsToMerge[i].getRegionNameAsString() + " ]");<a
name="line.548"></a>
-<span class="sourceLineNo">549</span> regionsToMergeListFullName =
sb.toString();<a name="line.549"></a>
-<span class="sourceLineNo">550</span> }<a name="line.550"></a>
-<span class="sourceLineNo">551</span> return regionsToMergeListFullName;<a
name="line.551"></a>
-<span class="sourceLineNo">552</span> }<a name="line.552"></a>
-<span class="sourceLineNo">553</span><a name="line.553"></a>
-<span class="sourceLineNo">554</span> /**<a name="line.554"></a>
-<span class="sourceLineNo">555</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.555"></a>
-<span class="sourceLineNo">556</span> * retrieve it.<a name="line.556"></a>
-<span class="sourceLineNo">557</span> * @return encoded region names<a
name="line.557"></a>
-<span class="sourceLineNo">558</span> */<a name="line.558"></a>
-<span class="sourceLineNo">559</span> private String
getRegionsToMergeListEncodedNameString() {<a name="line.559"></a>
-<span class="sourceLineNo">560</span> if (regionsToMergeListEncodedName ==
null) {<a name="line.560"></a>
-<span class="sourceLineNo">561</span> StringBuilder sb = new
StringBuilder("[");<a name="line.561"></a>
-<span class="sourceLineNo">562</span> int i = 0;<a name="line.562"></a>
-<span class="sourceLineNo">563</span> while(i < regionsToMerge.length
- 1) {<a name="line.563"></a>
-<span class="sourceLineNo">564</span>
sb.append(regionsToMerge[i].getEncodedName() + ", ");<a name="line.564"></a>
-<span class="sourceLineNo">565</span> i++;<a name="line.565"></a>
-<span class="sourceLineNo">566</span> }<a name="line.566"></a>
-<span class="sourceLineNo">567</span>
sb.append(regionsToMerge[i].getEncodedName() + " ]");<a name="line.567"></a>
-<span class="sourceLineNo">568</span> regionsToMergeListEncodedName =
sb.toString();<a name="line.568"></a>
-<span class="sourceLineNo">569</span> }<a name="line.569"></a>
-<span class="sourceLineNo">570</span> return
regionsToMergeListEncodedName;<a name="line.570"></a>
-<span class="sourceLineNo">571</span> }<a name="line.571"></a>
-<span class="sourceLineNo">572</span><a name="line.572"></a>
-<span class="sourceLineNo">573</span> /**<a name="line.573"></a>
-<span class="sourceLineNo">574</span> * The procedure could be restarted
from a different machine. If the variable is null, we need to<a
name="line.574"></a>
-<span class="sourceLineNo">575</span> * retrieve it.<a name="line.575"></a>
-<span class="sourceLineNo">576</span> * @return traceEnabled<a
name="line.576"></a>
-<span class="sourceLineNo">577</span> */<a name="line.577"></a>
-<span class="sourceLineNo">578</span> private Boolean isTraceEnabled() {<a
name="line.578"></a>
-<span class="sourceLineNo">579</span> if (traceEnabled == null) {<a
name="line.579"></a>
-<span class="sourceLineNo">580</span> traceEnabled =
LOG.isTraceEnabled();<a name="line.580"></a>
-<span class="sourceLineNo">581</span> }<a name="line.581"></a>
-<span class="sourceLineNo">582</span> return traceEnabled;<a
name="line.582"></a>
-<span class="sourceLineNo">583</span> }<a name="line.583"></a>
-<span class="sourceLineNo">584</span>}<a name="line.584"></a>
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-</pre>
-</div>
-</body>
-</html>
