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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master.assignment;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Optional;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.concurrent.CompletableFuture;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.HConstants;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.ServerName;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.TableName;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.master.procedure.TableProcedureInterface;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.procedure2.FailedRemoteDispatchException;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.procedure2.ProcedureFutureUtil;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.procedure2.ProcedureUtil;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.procedure2.ProcedureYieldException;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteProcedure;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureException;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.RetryCounter;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<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.RegionRemoteProcedureBaseState;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionRemoteProcedureBaseStateData;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.ProcedureState;<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 base class for the remote procedures used to open/close a region.<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * <p/><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * Notice that here we do not care about the result of the remote call, if the remote call is<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * finished, either succeeded or not, we will always finish the procedure. The parent procedure<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * should take care of the result and try to reschedule if the result is not good.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>@InterfaceAudience.Private<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>public abstract class RegionRemoteProcedureBase extends Procedure<MasterProcedureEnv><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> implements TableProcedureInterface, RemoteProcedure<MasterProcedureEnv, ServerName> {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final Logger LOG = LoggerFactory.getLogger(RegionRemoteProcedureBase.class);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> protected RegionInfo region;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> protected ServerName targetServer;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private RegionRemoteProcedureBaseState state =<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_DISPATCH;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> private TransitionCode transitionCode;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private long seqId;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private RetryCounter retryCounter;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private CompletableFuture<Void> future;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> protected RegionRemoteProcedureBase() {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> protected RegionRemoteProcedureBase(TransitRegionStateProcedure parent, RegionInfo region,<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> ServerName targetServer) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> this.region = region;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.targetServer = targetServer;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> parent.attachRemoteProc(this);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> @Override<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public Optional<RemoteProcedureDispatcher.RemoteOperation> remoteCallBuild(MasterProcedureEnv env,<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> ServerName remote) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> // REPORT_SUCCEED means that this remote open/close request already executed in RegionServer.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> // So return empty operation and RSProcedureDispatcher no need to send it again.<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> if (state == RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_REPORT_SUCCEED) {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> return Optional.empty();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> return Optional.of(newRemoteOperation());<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> }<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> protected abstract RemoteProcedureDispatcher.RemoteOperation newRemoteOperation();<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> @Override<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> public void remoteOperationCompleted(MasterProcedureEnv env) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> // should not be called since we use reportRegionStateTransition to report the result<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> throw new UnsupportedOperationException();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> }<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> @Override<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> public void remoteOperationFailed(MasterProcedureEnv env, RemoteProcedureException error) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> // should not be called since we use reportRegionStateTransition to report the result<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> throw new UnsupportedOperationException();<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> private RegionStateNode getRegionNode(MasterProcedureEnv env) {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> return env.getAssignmentManager().getRegionStates().getRegionStateNode(region);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> @Override<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> public void remoteCallFailed(MasterProcedureEnv env, ServerName remote, IOException exception) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> RegionStateNode regionNode = getRegionNode(env);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> regionNode.lock();<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> try {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (!env.getMasterServices().getServerManager().isServerOnline(remote)) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> // the SCP will interrupt us, give up<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> LOG.debug("{} for region {}, targetServer {} is dead, SCP will interrupt us, give up", this,<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> regionNode, remote);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> if (state != RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_DISPATCH) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // not sure how can this happen but anyway let's add a check here to avoid waking the wrong<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // procedure...<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> LOG.warn("{} for region {}, targetServer={} has already been woken up, ignore", this,<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> regionNode, remote);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> return;<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> LOG.warn("The remote operation {} for region {} to server {} failed", this, regionNode,<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> remote, exception);<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> // It is OK to not persist the state here, as we do not need to change the region state if the<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> // remote call is failed. If the master crashed before we actually execute the procedure and<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> // persist the new state, it is fine to retry on the same target server again.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> state = RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_DISPATCH_FAIL;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> regionNode.getProcedureEvent().wake(env.getProcedureScheduler());<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> } finally {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> regionNode.unlock();<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> }<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> @Override<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> public TableName getTableName() {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> return region.getTable();<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> @Override<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> protected boolean waitInitialized(MasterProcedureEnv env) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if (TableName.isMetaTableName(getTableName())) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> return false;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> // First we need meta to be loaded, and second, if meta is not online then we will likely to<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // fail when updating meta so we wait until it is assigned.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> AssignmentManager am = env.getAssignmentManager();<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return am.waitMetaLoaded(this) || am.waitMetaAssigned(this, region);<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> @Override<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> protected void rollback(MasterProcedureEnv env) throws IOException, InterruptedException {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> throw new UnsupportedOperationException();<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> @Override<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> protected boolean abort(MasterProcedureEnv env) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> return false;<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> // do some checks to see if the report is valid<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> protected abstract void checkTransition(RegionStateNode regionNode, TransitionCode transitionCode,<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> long seqId) throws UnexpectedStateException;<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> // change the in memory state of the regionNode, but do not update meta.<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> protected abstract void updateTransitionWithoutPersistingToMeta(MasterProcedureEnv env,<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> RegionStateNode regionNode, TransitionCode transitionCode, long seqId) throws IOException;<a name="line.182"></a> |
| <span class="sourceLineNo">183</span><a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // A bit strange but the procedure store will throw RuntimeException if we can not persist the<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> // state, so upper layer should take care of this...<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> private void persistAndWake(MasterProcedureEnv env, RegionStateNode regionNode) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> // The synchronization here is to guard with ProcedureExecutor.executeRollback, as here we will<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> // not hold the procedure execution lock, but we should not persist a procedure in ROLLEDBACK<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // state to the procedure store.<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> // The ProcedureStore.update must be inside the lock, so here the check for procedure state and<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> // update could be atomic. In ProcedureExecutor.cleanupAfterRollbackOneStep, we will set the<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> // state to ROLLEDBACK, which will hold the same lock too as the Procedure.setState method is<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // synchronized. This is the key to keep us safe.<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> synchronized (this) {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if (getState() == ProcedureState.ROLLEDBACK) {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> LOG.warn("Procedure {} has already been rolled back, skip persistent", this);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> return;<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> env.getMasterServices().getMasterProcedureExecutor().getStore().update(this);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> regionNode.getProcedureEvent().wake(env.getProcedureScheduler());<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> // should be called with RegionStateNode locked, to avoid race with the execute method below<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> void reportTransition(MasterProcedureEnv env, RegionStateNode regionNode, ServerName serverName,<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> TransitionCode transitionCode, long seqId) throws IOException {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> if (state != RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_DISPATCH) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> // should be a retry<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> if (!targetServer.equals(serverName)) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> throw new UnexpectedStateException("Received report from " + serverName + ", expected "<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> + targetServer + ", " + regionNode + ", proc=" + this);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> checkTransition(regionNode, transitionCode, seqId);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> // this state means we have received the report from RS, does not mean the result is fine, as we<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> // may received a FAILED_OPEN.<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> this.state = RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_REPORT_SUCCEED;<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> this.transitionCode = transitionCode;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> this.seqId = seqId;<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> // Persist the transition code and openSeqNum(if provided).<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> // We should not update the hbase:meta directly as this may cause races when master restarts,<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // as the old active master may incorrectly report back to RS and cause the new master to hang<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> // on a OpenRegionProcedure forever. See HBASE-22060 and HBASE-22074 for more details.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> boolean succ = false;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> try {<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> persistAndWake(env, regionNode);<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> succ = true;<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> } finally {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> if (!succ) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> this.state = RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_DISPATCH;<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> this.transitionCode = null;<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> this.seqId = HConstants.NO_SEQNUM;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> try {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> updateTransitionWithoutPersistingToMeta(env, regionNode, transitionCode, seqId);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> } catch (IOException e) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> throw new AssertionError("should not happen", e);<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> void serverCrashed(MasterProcedureEnv env, RegionStateNode regionNode, ServerName serverName) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if (state == RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_SERVER_CRASH) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> // should be a retry<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> return;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> RegionRemoteProcedureBaseState oldState = state;<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // it is possible that the state is in REGION_REMOTE_PROCEDURE_SERVER_CRASH, think of this<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> // sequence<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> // 1. region is open on the target server and the above reportTransition call is succeeded<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> // 2. before we are woken up and update the meta, the target server crashes, and then we arrive<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> // here<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> this.state = RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_SERVER_CRASH;<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> boolean succ = false;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> try {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> persistAndWake(env, regionNode);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> succ = true;<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> } finally {<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> if (!succ) {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> this.state = oldState;<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> }<a name="line.264"></a> |
| <span class="sourceLineNo">265</span><a name="line.265"></a> |
| <span class="sourceLineNo">266</span> protected abstract void restoreSucceedState(AssignmentManager am, RegionStateNode regionNode,<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> long seqId) throws IOException;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span><a name="line.268"></a> |
| <span class="sourceLineNo">269</span> void stateLoaded(AssignmentManager am, RegionStateNode regionNode) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> if (state == RegionRemoteProcedureBaseState.REGION_REMOTE_PROCEDURE_REPORT_SUCCEED) {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> try {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> restoreSucceedState(am, regionNode, seqId);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> } catch (IOException e) {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> // should not happen as we are just restoring the state<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> throw new AssertionError(e);<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> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span><a name="line.279"></a> |
| <span class="sourceLineNo">280</span> private TransitRegionStateProcedure getParent(MasterProcedureEnv env) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> return (TransitRegionStateProcedure) env.getMasterServices().getMasterProcedureExecutor()<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> .getProcedure(getParentProcId());<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> private void unattach(MasterProcedureEnv env) {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> getParent(env).unattachRemoteProc(this);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> }<a name="line.287"></a> |
| <span class="sourceLineNo">288</span><a name="line.288"></a> |
| <span class="sourceLineNo">289</span> private CompletableFuture<Void> getFuture() {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> return future;<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> private void setFuture(CompletableFuture<Void> f) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> future = f;<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> }<a name="line.295"></a> |
| <span class="sourceLineNo">296</span><a name="line.296"></a> |
| <span class="sourceLineNo">297</span> @Override<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> protected Procedure<MasterProcedureEnv>[] execute(MasterProcedureEnv env)<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> throws ProcedureYieldException, ProcedureSuspendedException, InterruptedException {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> RegionStateNode regionNode = getRegionNode(env);<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> if (!regionNode.isLockedBy(this)) {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> regionNode.lock(this, () -> ProcedureFutureUtil.wakeUp(this, env));<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> try {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> switch (state) {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> case REGION_REMOTE_PROCEDURE_DISPATCH: {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> // The code which wakes us up also needs to lock the RSN so here we do not need to<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> // synchronize on the event.<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> ProcedureEvent<?> event = regionNode.getProcedureEvent();<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> try {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> env.getRemoteDispatcher().addOperationToNode(targetServer, this);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> } catch (FailedRemoteDispatchException e) {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> LOG.warn("Can not add remote operation {} for region {} to server {}, this usually "<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> + "because the server is alread dead, give up and mark the procedure as complete, "<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> + "the parent procedure will take care of this.", this, region, targetServer, e);<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> unattach(env);<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> return null;<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> event.suspend();<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> event.suspendIfNotReady(this);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> throw new ProcedureSuspendedException();<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> }<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> case REGION_REMOTE_PROCEDURE_REPORT_SUCCEED:<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> if (<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> ProcedureFutureUtil.checkFuture(this, this::getFuture, this::setFuture,<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> () -> unattach(env))<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> ) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> return null;<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> ProcedureFutureUtil.suspendIfNecessary(this, this::setFuture,<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> env.getAssignmentManager().persistToMeta(regionNode), env, () -> unattach(env));<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> return null;<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> case REGION_REMOTE_PROCEDURE_DISPATCH_FAIL:<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> // the remote call is failed so we do not need to change the region state, just return.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> unattach(env);<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> return null;<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> case REGION_REMOTE_PROCEDURE_SERVER_CRASH:<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> if (<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> ProcedureFutureUtil.checkFuture(this, this::getFuture, this::setFuture,<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> () -> unattach(env))<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> ) {<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> return null;<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> ProcedureFutureUtil.suspendIfNecessary(this, this::setFuture,<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> env.getAssignmentManager().regionClosedAbnormally(regionNode), env,<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> () -> unattach(env));<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> return null;<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> default:<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> throw new IllegalStateException("Unknown state: " + state);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> }<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> } catch (IOException e) {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> if (retryCounter == null) {<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> retryCounter = ProcedureUtil.createRetryCounter(env.getMasterConfiguration());<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> long backoff = retryCounter.getBackoffTimeAndIncrementAttempts();<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> LOG.warn("Failed updating meta, suspend {}secs {}; {};", backoff / 1000, this, regionNode, e);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> throw suspend(Math.toIntExact(backoff), true);<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> } finally {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> if (future == null) {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> regionNode.unlock(this);<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> }<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> }<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> }<a name="line.363"></a> |
| <span class="sourceLineNo">364</span><a name="line.364"></a> |
| <span class="sourceLineNo">365</span> @Override<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> protected synchronized boolean setTimeoutFailure(MasterProcedureEnv env) {<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> setState(ProcedureProtos.ProcedureState.RUNNABLE);<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> env.getProcedureScheduler().addFront(this);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> return false; // 'false' means that this procedure handled the timeout<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> @Override<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> public boolean storeInDispatchedQueue() {<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> return false;<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> }<a name="line.375"></a> |
| <span class="sourceLineNo">376</span><a name="line.376"></a> |
| <span class="sourceLineNo">377</span> @Override<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> RegionRemoteProcedureBaseStateData.Builder builder =<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> RegionRemoteProcedureBaseStateData.newBuilder().setRegion(ProtobufUtil.toRegionInfo(region))<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> .setTargetServer(ProtobufUtil.toServerName(targetServer)).setState(state);<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> if (transitionCode != null) {<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> builder.setTransitionCode(transitionCode);<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> builder.setSeqId(seqId);<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> }<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> serializer.serialize(builder.build());<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span><a name="line.388"></a> |
| <span class="sourceLineNo">389</span> @Override<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> RegionRemoteProcedureBaseStateData data =<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> serializer.deserialize(RegionRemoteProcedureBaseStateData.class);<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> region = ProtobufUtil.toRegionInfo(data.getRegion());<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> targetServer = ProtobufUtil.toServerName(data.getTargetServer());<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> // 'state' may not be present if we are reading an 'old' form of this pb Message.<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> if (data.hasState()) {<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> state = data.getState();<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> }<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> if (data.hasTransitionCode()) {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> transitionCode = data.getTransitionCode();<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> seqId = data.getSeqId();<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> }<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> }<a name="line.403"></a> |
| <span class="sourceLineNo">404</span><a name="line.404"></a> |
| <span class="sourceLineNo">405</span> @Override<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> protected void afterReplay(MasterProcedureEnv env) {<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> getParent(env).attachRemoteProc(this);<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> }<a name="line.408"></a> |
| <span class="sourceLineNo">409</span><a name="line.409"></a> |
| <span class="sourceLineNo">410</span> @Override<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> public String getProcName() {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> return getClass().getSimpleName() + " " + region.getEncodedName();<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> @Override<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> protected void toStringClassDetails(StringBuilder builder) {<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> builder.append(getProcName());<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> if (targetServer != null) {<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> builder.append(", server=");<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> builder.append(this.targetServer);<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> }<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> if (this.retryCounter != null) {<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> builder.append(", retry=");<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> builder.append(this.retryCounter);<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> }<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> }<a name="line.426"></a> |
| <span class="sourceLineNo">427</span>}<a name="line.427"></a> |
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| </html> |
