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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master.assignment;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import edu.umd.cs.findbugs.annotations.Nullable;<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 org.apache.hadoop.hbase.HBaseIOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.ServerName;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.TableName;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RetriesExhaustedException;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.procedure2.ProcedureUtil;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.procedure2.ProcedureYieldException;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.RetryCounter;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionStateTransitionState;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionStateTransitionStateData;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionType;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span>/**<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * The procedure to deal with the state transition of a region. A region with a TRSP in place is<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * called RIT, i.e, RegionInTransition.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * <p/><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * It can be used to assign/unassign/reopen/move a region, and for<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * {@link #unassign(MasterProcedureEnv, RegionInfo)} and<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * {@link #reopen(MasterProcedureEnv, RegionInfo)}, you do not need to specify a target server, and<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * for {@link #assign(MasterProcedureEnv, RegionInfo, ServerName)} and<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * {@link #move(MasterProcedureEnv, RegionInfo, ServerName)}, if you want to you can provide a<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * target server. And for {@link #move(MasterProcedureEnv, RegionInfo, ServerName)}, if you do not<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * specify a targetServer, we will select one randomly.<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * <p/><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * <p/><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * The typical state transition for assigning a region is:<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> *<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * <pre><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * GET_ASSIGN_CANDIDATE ------> OPEN -----> CONFIRM_OPENED<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * </pre><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> *<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Notice that, if there are failures we may go back to the {@code GET_ASSIGN_CANDIDATE} state to<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * try again.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * <p/><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * The typical state transition for unassigning a region is:<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> *<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * <pre><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * CLOSE -----> CONFIRM_CLOSED<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * </pre><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> *<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * Here things go a bit different, if there are failures, especially that if there is a server<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * crash, we will go to the {@code GET_ASSIGN_CANDIDATE} state to bring the region online first, and<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> * then go through the normal way to unassign it.<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * <p/><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * The typical state transition for reopening/moving a region is:<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> *<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * <pre><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * CLOSE -----> CONFIRM_CLOSED -----> GET_ASSIGN_CANDIDATE ------> OPEN -----> CONFIRM_OPENED<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * </pre><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> *<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * The retry logic is the same with the above assign/unassign.<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * <p/><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * Notice that, although we allow specify a target server, it just acts as a candidate, we do not<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * guarantee that the region will finally be on the target server. If this is important for you, you<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * should check whether the region is on the target server after the procedure is finished.<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * <p/><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * When you want to schedule a TRSP, please check whether there is still one for this region, and<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * the check should be under the RegionStateNode lock. We will remove the TRSP from a<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * RegionStateNode when we are done, see the code in {@code reportTransition} method below. There<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * could be at most one TRSP for a give region.<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> */<a name="line.101"></a> |
| <span class="sourceLineNo">102</span>@InterfaceAudience.Private<a name="line.102"></a> |
| <span class="sourceLineNo">103</span>public class TransitRegionStateProcedure<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> extends AbstractStateMachineRegionProcedure<RegionStateTransitionState> {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> private static final Logger LOG = LoggerFactory.getLogger(TransitRegionStateProcedure.class);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> private TransitionType type;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> private RegionStateTransitionState initialState;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span><a name="line.111"></a> |
| <span class="sourceLineNo">112</span> private RegionStateTransitionState lastState;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> // the candidate where we want to assign the region to.<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> private ServerName assignCandidate;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> private boolean forceNewPlan;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> private RetryCounter retryCounter;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> private RegionRemoteProcedureBase remoteProc;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public TransitRegionStateProcedure() {<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> private void setInitialAndLastState() {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> switch (type) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> case ASSIGN:<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> initialState = RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> lastState = RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_OPENED;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> break;<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> case UNASSIGN:<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> initialState = RegionStateTransitionState.REGION_STATE_TRANSITION_CLOSE;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> lastState = RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_CLOSED;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> break;<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> case MOVE:<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> case REOPEN:<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> initialState = RegionStateTransitionState.REGION_STATE_TRANSITION_CLOSE;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> lastState = RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_OPENED;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> break;<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> default:<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> throw new IllegalArgumentException("Unknown TransitionType: " + type);<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><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> @VisibleForTesting<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> protected TransitRegionStateProcedure(MasterProcedureEnv env, RegionInfo hri,<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> ServerName assignCandidate, boolean forceNewPlan, TransitionType type) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> super(env, hri);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> this.assignCandidate = assignCandidate;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> this.forceNewPlan = forceNewPlan;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> this.type = type;<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> setInitialAndLastState();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> // when do reopen TRSP, let the rs know the targetServer so it can keep some info on close<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> if (type == TransitionType.REOPEN) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> this.assignCandidate = getRegionStateNode(env).getRegionLocation();<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> }<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> @Override<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> public TableOperationType getTableOperationType() {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> // TODO: maybe we should make another type here, REGION_TRANSITION?<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return TableOperationType.REGION_EDIT;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> @Override<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> protected boolean waitInitialized(MasterProcedureEnv env) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> if (TableName.isMetaTableName(getTableName())) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> return false;<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // First we need meta to be loaded, and second, if meta is not online then we will likely to<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> // fail when updating meta so we wait until it is assigned.<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> AssignmentManager am = env.getAssignmentManager();<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> return am.waitMetaLoaded(this) || am.waitMetaAssigned(this, getRegion());<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> private void queueAssign(MasterProcedureEnv env, RegionStateNode regionNode)<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> throws ProcedureSuspendedException {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> boolean retain = false;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> if (forceNewPlan) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> // set the region location to null if forceNewPlan is true<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> regionNode.setRegionLocation(null);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> } else {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (assignCandidate != null) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> retain = assignCandidate.equals(regionNode.getLastHost());<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> regionNode.setRegionLocation(assignCandidate);<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> } else if (regionNode.getLastHost() != null) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> retain = true;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> LOG.info("Setting lastHost as the region location {}", regionNode.getLastHost());<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> regionNode.setRegionLocation(regionNode.getLastHost());<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> }<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> LOG.info("Starting {}; {}; forceNewPlan={}, retain={}", this, regionNode.toShortString(),<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> forceNewPlan, retain);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> env.getAssignmentManager().queueAssign(regionNode);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_OPEN);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> if (regionNode.getProcedureEvent().suspendIfNotReady(this)) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> throw new ProcedureSuspendedException();<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> private void openRegion(MasterProcedureEnv env, RegionStateNode regionNode) throws IOException {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> ServerName loc = regionNode.getRegionLocation();<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> if (loc == null) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> LOG.warn("No location specified for {}, jump back to state {} to get one", getRegion(),<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> return;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> env.getAssignmentManager().regionOpening(regionNode);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> addChildProcedure(new OpenRegionProcedure(this, getRegion(), loc));<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_OPENED);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> private Flow confirmOpened(MasterProcedureEnv env, RegionStateNode regionNode)<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> throws IOException {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> if (regionNode.isInState(State.OPEN)) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> retryCounter = null;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> if (lastState == RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_OPENED) {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> // we are the last state, finish<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> regionNode.unsetProcedure(this);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> ServerCrashProcedure.updateProgress(env, getParentProcId());<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> return Flow.NO_MORE_STATE;<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> // It is possible that we arrive here but confirm opened is not the last state, for example,<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> // when merging or splitting a region, we unassign the region from a RS and the RS is crashed,<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> // then there will be recovered edits for this region, we'd better make the region online<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> // again and then unassign it, otherwise we have to fail the merge/split procedure as we may<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> // loss data.<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_CLOSE);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> return Flow.HAS_MORE_STATE;<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span><a name="line.234"></a> |
| <span class="sourceLineNo">235</span> int retries = env.getAssignmentManager().getRegionStates().addToFailedOpen(regionNode)<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> .incrementAndGetRetries();<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> int maxAttempts = env.getAssignmentManager().getAssignMaxAttempts();<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> LOG.info("Retry={} of max={}; {}; {}", retries, maxAttempts, this, regionNode.toShortString());<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (retries >= maxAttempts) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> env.getAssignmentManager().regionFailedOpen(regionNode, true);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> setFailure(getClass().getSimpleName(), new RetriesExhaustedException(<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> "Max attempts " + env.getAssignmentManager().getAssignMaxAttempts() + " exceeded"));<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> regionNode.unsetProcedure(this);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> return Flow.NO_MORE_STATE;<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span><a name="line.247"></a> |
| <span class="sourceLineNo">248</span> env.getAssignmentManager().regionFailedOpen(regionNode, false);<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // we failed to assign the region, force a new plan<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> forceNewPlan = true;<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> regionNode.setRegionLocation(null);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> if (retries > env.getAssignmentManager().getAssignRetryImmediatelyMaxAttempts()) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> // Throw exception to backoff and retry when failed open too many times<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> throw new HBaseIOException("Failed confirm OPEN of " + regionNode +<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> " (remote log may yield more detail on why).");<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> } else {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> // Here we do not throw exception because we want to the region to be online ASAP<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return Flow.HAS_MORE_STATE;<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> }<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> private void closeRegion(MasterProcedureEnv env, RegionStateNode regionNode) throws IOException {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (regionNode.isInState(State.OPEN, State.CLOSING, State.MERGING, State.SPLITTING)) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> // this is the normal case<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> env.getAssignmentManager().regionClosing(regionNode);<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> addChildProcedure(new CloseRegionProcedure(this, getRegion(), regionNode.getRegionLocation(),<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> assignCandidate));<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_CLOSED);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> } else {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> forceNewPlan = true;<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> regionNode.setRegionLocation(null);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> }<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> private Flow confirmClosed(MasterProcedureEnv env, RegionStateNode regionNode)<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> throws IOException {<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> if (regionNode.isInState(State.CLOSED)) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> retryCounter = null;<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> if (lastState == RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_CLOSED) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> // we are the last state, finish<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> regionNode.unsetProcedure(this);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> return Flow.NO_MORE_STATE;<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> // This means we need to open the region again, should be a move or reopen<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> return Flow.HAS_MORE_STATE;<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> if (regionNode.isInState(State.CLOSING)) {<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> // This is possible, think the target RS crashes and restarts immediately, the close region<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> // operation will return a NotServingRegionException soon, we can only recover after SCP takes<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> // care of this RS. So here we throw an IOException to let upper layer to retry with backoff.<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_CLOSE);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> throw new HBaseIOException("Failed to close region");<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // abnormally closed, need to reopen it, no matter what is the last state, see the comment in<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> // confirmOpened for more details that why we need to reopen the region first even if we just<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> // want to close it.<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> // The only exception is for non-default replica, where we do not need to deal with recovered<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> // edits. Notice that the region will remain in ABNORMALLY_CLOSED state, the upper layer need to<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> // deal with this state. For non-default replica, this is usually the same with CLOSED.<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> assert regionNode.isInState(State.ABNORMALLY_CLOSED);<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> if (!RegionReplicaUtil.isDefaultReplica(getRegion()) &&<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> lastState == RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_CLOSED) {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> regionNode.unsetProcedure(this);<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> return Flow.NO_MORE_STATE;<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> retryCounter = null;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> setNextState(RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> return Flow.HAS_MORE_STATE;<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> // Override to lock RegionStateNode<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> @SuppressWarnings("rawtypes")<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> @Override<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> protected Procedure[] execute(MasterProcedureEnv env)<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> RegionStateNode regionNode =<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(getRegion());<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> regionNode.lock();<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> try {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> return super.execute(env);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> } finally {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> regionNode.unlock();<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> private RegionStateNode getRegionStateNode(MasterProcedureEnv env) {<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> return env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(getRegion());<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> }<a name="line.332"></a> |
| <span class="sourceLineNo">333</span><a name="line.333"></a> |
| <span class="sourceLineNo">334</span> @Override<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> protected Flow executeFromState(MasterProcedureEnv env, RegionStateTransitionState state)<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> RegionStateNode regionNode = getRegionStateNode(env);<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> try {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> switch (state) {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> case REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE:<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> // Need to do some sanity check for replica region, if the region does not exist at<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> // master, do not try to assign the replica region, log error and return.<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> if (!RegionReplicaUtil.isDefaultReplica(regionNode.getRegionInfo())) {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> RegionInfo defaultRI =<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> RegionReplicaUtil.getRegionInfoForDefaultReplica(regionNode.getRegionInfo());<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> if (env.getMasterServices().getAssignmentManager().getRegionStates().<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> getRegionStateNode(defaultRI) == null) {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> LOG.error(<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> "Cannot assign replica region {} because its primary region {} does not exist.",<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> regionNode.getRegionInfo(), defaultRI);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> return Flow.NO_MORE_STATE;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> queueAssign(env, regionNode);<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> return Flow.HAS_MORE_STATE;<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> case REGION_STATE_TRANSITION_OPEN:<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> openRegion(env, regionNode);<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> return Flow.HAS_MORE_STATE;<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> case REGION_STATE_TRANSITION_CONFIRM_OPENED:<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> return confirmOpened(env, regionNode);<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> case REGION_STATE_TRANSITION_CLOSE:<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> closeRegion(env, regionNode);<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> return Flow.HAS_MORE_STATE;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> case REGION_STATE_TRANSITION_CONFIRM_CLOSED:<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> return confirmClosed(env, regionNode);<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> default:<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> } catch (IOException e) {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> if (retryCounter == null) {<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> retryCounter = ProcedureUtil.createRetryCounter(env.getMasterConfiguration());<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> }<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> long backoff = retryCounter.getBackoffTimeAndIncrementAttempts();<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> LOG.warn(<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> "Failed transition, suspend {}secs {}; {}; waiting on rectified condition fixed " +<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> "by other Procedure or operator intervention",<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> backoff / 1000, this, regionNode.toShortString(), e);<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> setTimeout(Math.toIntExact(backoff));<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> setState(ProcedureProtos.ProcedureState.WAITING_TIMEOUT);<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> skipPersistence();<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> throw new ProcedureSuspendedException();<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> /**<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> * At end of timeout, wake ourselves up so we run again.<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> */<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> @Override<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> protected synchronized boolean setTimeoutFailure(MasterProcedureEnv env) {<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> setState(ProcedureProtos.ProcedureState.RUNNABLE);<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> env.getProcedureScheduler().addFront(this);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> return false; // 'false' means that this procedure handled the timeout<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> }<a name="line.393"></a> |
| <span class="sourceLineNo">394</span><a name="line.394"></a> |
| <span class="sourceLineNo">395</span> // Should be called with RegionStateNode locked<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> public void reportTransition(MasterProcedureEnv env, RegionStateNode regionNode,<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> ServerName serverName, TransitionCode code, long seqId, long procId) throws IOException {<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> if (remoteProc == null) {<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> LOG.warn(<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> "There is no outstanding remote region procedure for {}, serverName={}, code={}," +<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> " seqId={}, proc={}, should be a retry, ignore",<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> regionNode, serverName, code, seqId, this);<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> return;<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> }<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> // The procId could be -1 if it is from an old region server, we need to deal with it so that we<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> // can do rolling upgraing.<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> if (procId >= 0 && remoteProc.getProcId() != procId) {<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> LOG.warn(<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> "The pid of remote region procedure for {} is {}, the reported pid={}, serverName={}," +<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> " code={}, seqId={}, proc={}, should be a retry, ignore",<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> regionNode, remoteProc.getProcId(), procId, serverName, code, seqId, this);<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> return;<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> remoteProc.reportTransition(env, regionNode, serverName, code, seqId);<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> }<a name="line.415"></a> |
| <span class="sourceLineNo">416</span><a name="line.416"></a> |
| <span class="sourceLineNo">417</span> // Should be called with RegionStateNode locked<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> public void serverCrashed(MasterProcedureEnv env, RegionStateNode regionNode,<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> ServerName serverName) throws IOException {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> // force to assign to a new candidate server<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> // AssignmentManager#regionClosedAbnormally will set region location to null<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> // TODO: the forceNewPlan flag not be persistent so if master crash then the flag will be lost.<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> // But assign to old server is not big deal because it not effect correctness.<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> // See HBASE-23035 for more details.<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> forceNewPlan = true;<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> if (remoteProc != null) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> // this means we are waiting for the sub procedure, so wake it up<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> remoteProc.serverCrashed(env, regionNode, serverName);<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> } else {<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> // we are in RUNNING state, just update the region state, and we will process it later.<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> env.getAssignmentManager().regionClosedAbnormally(regionNode);<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> }<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> }<a name="line.433"></a> |
| <span class="sourceLineNo">434</span><a name="line.434"></a> |
| <span class="sourceLineNo">435</span> void attachRemoteProc(RegionRemoteProcedureBase proc) {<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> this.remoteProc = proc;<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> }<a name="line.437"></a> |
| <span class="sourceLineNo">438</span><a name="line.438"></a> |
| <span class="sourceLineNo">439</span> void unattachRemoteProc(RegionRemoteProcedureBase proc) {<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> assert this.remoteProc == proc;<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> this.remoteProc = null;<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> }<a name="line.442"></a> |
| <span class="sourceLineNo">443</span><a name="line.443"></a> |
| <span class="sourceLineNo">444</span> // will be called after we finish loading the meta entry for this region.<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> // used to change the state of the region node if we have a sub procedure, as we may not persist<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> // the state to meta yet. See the code in RegionRemoteProcedureBase.execute for more details.<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> void stateLoaded(AssignmentManager am, RegionStateNode regionNode) {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> if (remoteProc != null) {<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> remoteProc.stateLoaded(am, regionNode);<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> }<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> }<a name="line.451"></a> |
| <span class="sourceLineNo">452</span><a name="line.452"></a> |
| <span class="sourceLineNo">453</span> @Override<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> protected void rollbackState(MasterProcedureEnv env, RegionStateTransitionState state)<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> throws IOException, InterruptedException {<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> // no rollback<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> throw new UnsupportedOperationException();<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> }<a name="line.458"></a> |
| <span class="sourceLineNo">459</span><a name="line.459"></a> |
| <span class="sourceLineNo">460</span> @Override<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> protected RegionStateTransitionState getState(int stateId) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> return RegionStateTransitionState.forNumber(stateId);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> }<a name="line.463"></a> |
| <span class="sourceLineNo">464</span><a name="line.464"></a> |
| <span class="sourceLineNo">465</span> @Override<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> protected int getStateId(RegionStateTransitionState state) {<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> return state.getNumber();<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span><a name="line.469"></a> |
| <span class="sourceLineNo">470</span> @Override<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> protected RegionStateTransitionState getInitialState() {<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> return initialState;<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> }<a name="line.473"></a> |
| <span class="sourceLineNo">474</span><a name="line.474"></a> |
| <span class="sourceLineNo">475</span> private static TransitionType convert(RegionTransitionType type) {<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> switch (type) {<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> case ASSIGN:<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> return TransitionType.ASSIGN;<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> case UNASSIGN:<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> return TransitionType.UNASSIGN;<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> case MOVE:<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> return TransitionType.MOVE;<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> case REOPEN:<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> return TransitionType.REOPEN;<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> default:<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> throw new IllegalArgumentException("Unknown RegionTransitionType: " + type);<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> }<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> }<a name="line.488"></a> |
| <span class="sourceLineNo">489</span><a name="line.489"></a> |
| <span class="sourceLineNo">490</span> private static RegionTransitionType convert(TransitionType type) {<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> switch (type) {<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> case ASSIGN:<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> return RegionTransitionType.ASSIGN;<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> case UNASSIGN:<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> return RegionTransitionType.UNASSIGN;<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> case MOVE:<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> return RegionTransitionType.MOVE;<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> case REOPEN:<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> return RegionTransitionType.REOPEN;<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> default:<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> throw new IllegalArgumentException("Unknown TransitionType: " + type);<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> }<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> }<a name="line.503"></a> |
| <span class="sourceLineNo">504</span><a name="line.504"></a> |
| <span class="sourceLineNo">505</span> @Override<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> super.serializeStateData(serializer);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> RegionStateTransitionStateData.Builder builder = RegionStateTransitionStateData.newBuilder()<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> .setType(convert(type)).setForceNewPlan(forceNewPlan);<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> if (assignCandidate != null) {<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> builder.setAssignCandidate(ProtobufUtil.toServerName(assignCandidate));<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> }<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> serializer.serialize(builder.build());<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> }<a name="line.514"></a> |
| <span class="sourceLineNo">515</span><a name="line.515"></a> |
| <span class="sourceLineNo">516</span> @Override<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> super.deserializeStateData(serializer);<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> RegionStateTransitionStateData data =<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> serializer.deserialize(RegionStateTransitionStateData.class);<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> type = convert(data.getType());<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> setInitialAndLastState();<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> forceNewPlan = data.getForceNewPlan();<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> if (data.hasAssignCandidate()) {<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> assignCandidate = ProtobufUtil.toServerName(data.getAssignCandidate());<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> }<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> }<a name="line.527"></a> |
| <span class="sourceLineNo">528</span><a name="line.528"></a> |
| <span class="sourceLineNo">529</span> @Override<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> MetricsAssignmentManager metrics = env.getAssignmentManager().getAssignmentManagerMetrics();<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> switch (type) {<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> case ASSIGN:<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> return metrics.getAssignProcMetrics();<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> case UNASSIGN:<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> return metrics.getUnassignProcMetrics();<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> case MOVE:<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> return metrics.getMoveProcMetrics();<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> case REOPEN:<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> return metrics.getReopenProcMetrics();<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> default:<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> throw new IllegalArgumentException("Unknown transition type: " + type);<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> }<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> }<a name="line.544"></a> |
| <span class="sourceLineNo">545</span><a name="line.545"></a> |
| <span class="sourceLineNo">546</span> @Override<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> super.toStringClassDetails(sb);<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> if (initialState == RegionStateTransitionState.REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE) {<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> sb.append(", ASSIGN");<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> } else if (lastState == RegionStateTransitionState.REGION_STATE_TRANSITION_CONFIRM_CLOSED) {<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> sb.append(", UNASSIGN");<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> } else {<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> sb.append(", REOPEN/MOVE");<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> }<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> }<a name="line.556"></a> |
| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> private static TransitRegionStateProcedure setOwner(MasterProcedureEnv env,<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> TransitRegionStateProcedure proc) {<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> proc.setOwner(env.getRequestUser().getShortName());<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> return proc;<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> }<a name="line.562"></a> |
| <span class="sourceLineNo">563</span><a name="line.563"></a> |
| <span class="sourceLineNo">564</span> public enum TransitionType {<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> ASSIGN, UNASSIGN, MOVE, REOPEN<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> }<a name="line.566"></a> |
| <span class="sourceLineNo">567</span><a name="line.567"></a> |
| <span class="sourceLineNo">568</span> // Be careful that, when you call these 4 methods below, you need to manually attach the returned<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> // procedure with the RegionStateNode, otherwise the procedure will quit immediately without doing<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> // anything. See the comment in executeFromState to find out why we need this assumption.<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> public static TransitRegionStateProcedure assign(MasterProcedureEnv env, RegionInfo region,<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> @Nullable ServerName targetServer) {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> return assign(env, region, false, targetServer);<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> }<a name="line.574"></a> |
| <span class="sourceLineNo">575</span><a name="line.575"></a> |
| <span class="sourceLineNo">576</span> public static TransitRegionStateProcedure assign(MasterProcedureEnv env, RegionInfo region,<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> boolean forceNewPlan, @Nullable ServerName targetServer) {<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> return setOwner(env, new TransitRegionStateProcedure(env, region, targetServer, forceNewPlan,<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> TransitionType.ASSIGN));<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> }<a name="line.580"></a> |
| <span class="sourceLineNo">581</span><a name="line.581"></a> |
| <span class="sourceLineNo">582</span> public static TransitRegionStateProcedure unassign(MasterProcedureEnv env, RegionInfo region) {<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> return setOwner(env,<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> new TransitRegionStateProcedure(env, region, null, false, TransitionType.UNASSIGN));<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> }<a name="line.585"></a> |
| <span class="sourceLineNo">586</span><a name="line.586"></a> |
| <span class="sourceLineNo">587</span> public static TransitRegionStateProcedure reopen(MasterProcedureEnv env, RegionInfo region) {<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> return setOwner(env,<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> new TransitRegionStateProcedure(env, region, null, false, TransitionType.REOPEN));<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> }<a name="line.590"></a> |
| <span class="sourceLineNo">591</span><a name="line.591"></a> |
| <span class="sourceLineNo">592</span> public static TransitRegionStateProcedure move(MasterProcedureEnv env, RegionInfo region,<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> @Nullable ServerName targetServer) {<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> return setOwner(env, new TransitRegionStateProcedure(env, region, targetServer,<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> targetServer == null, TransitionType.MOVE));<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> }<a name="line.596"></a> |
| <span class="sourceLineNo">597</span>}<a name="line.597"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
