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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master.assignment;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.Optional;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.UnassignRegionStateData;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35">/**</span> |
| <span class="source-line-no">036</span><span id="line-36"> * Leave here only for checking if we can successfully start the master.</span> |
| <span class="source-line-no">037</span><span id="line-37"> * @deprecated Do not use any more.</span> |
| <span class="source-line-no">038</span><span id="line-38"> * @see TransitRegionStateProcedure</span> |
| <span class="source-line-no">039</span><span id="line-39"> */</span> |
| <span class="source-line-no">040</span><span id="line-40">@Deprecated</span> |
| <span class="source-line-no">041</span><span id="line-41">@InterfaceAudience.Private</span> |
| <span class="source-line-no">042</span><span id="line-42">public class UnassignProcedure extends RegionTransitionProcedure {</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> protected volatile ServerName hostingServer;</span> |
| <span class="source-line-no">045</span><span id="line-45"></span> |
| <span class="source-line-no">046</span><span id="line-46"> protected volatile ServerName destinationServer;</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> private boolean removeAfterUnassigning;</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> public UnassignProcedure() {</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> @Override</span> |
| <span class="source-line-no">054</span><span id="line-54"> public TableOperationType getTableOperationType() {</span> |
| <span class="source-line-no">055</span><span id="line-55"> return TableOperationType.REGION_UNASSIGN;</span> |
| <span class="source-line-no">056</span><span id="line-56"> }</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> @Override</span> |
| <span class="source-line-no">059</span><span id="line-59"> protected boolean isRollbackSupported(final RegionTransitionState state) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> switch (state) {</span> |
| <span class="source-line-no">061</span><span id="line-61"> case REGION_TRANSITION_QUEUE:</span> |
| <span class="source-line-no">062</span><span id="line-62"> case REGION_TRANSITION_DISPATCH:</span> |
| <span class="source-line-no">063</span><span id="line-63"> return true;</span> |
| <span class="source-line-no">064</span><span id="line-64"> default:</span> |
| <span class="source-line-no">065</span><span id="line-65"> return false;</span> |
| <span class="source-line-no">066</span><span id="line-66"> }</span> |
| <span class="source-line-no">067</span><span id="line-67"> }</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> @Override</span> |
| <span class="source-line-no">070</span><span id="line-70"> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">071</span><span id="line-71"> UnassignRegionStateData.Builder state =</span> |
| <span class="source-line-no">072</span><span id="line-72"> UnassignRegionStateData.newBuilder().setTransitionState(getTransitionState())</span> |
| <span class="source-line-no">073</span><span id="line-73"> .setHostingServer(ProtobufUtil.toServerName(this.hostingServer))</span> |
| <span class="source-line-no">074</span><span id="line-74"> .setRegionInfo(ProtobufUtil.toRegionInfo(getRegionInfo()));</span> |
| <span class="source-line-no">075</span><span id="line-75"> if (this.destinationServer != null) {</span> |
| <span class="source-line-no">076</span><span id="line-76"> state.setDestinationServer(ProtobufUtil.toServerName(destinationServer));</span> |
| <span class="source-line-no">077</span><span id="line-77"> }</span> |
| <span class="source-line-no">078</span><span id="line-78"> if (removeAfterUnassigning) {</span> |
| <span class="source-line-no">079</span><span id="line-79"> state.setRemoveAfterUnassigning(true);</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"> if (getAttempt() > 0) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> state.setAttempt(getAttempt());</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"> serializer.serialize(state.build());</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> @Override</span> |
| <span class="source-line-no">088</span><span id="line-88"> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">089</span><span id="line-89"> final UnassignRegionStateData state = serializer.deserialize(UnassignRegionStateData.class);</span> |
| <span class="source-line-no">090</span><span id="line-90"> setTransitionState(state.getTransitionState());</span> |
| <span class="source-line-no">091</span><span id="line-91"> setRegionInfo(ProtobufUtil.toRegionInfo(state.getRegionInfo()));</span> |
| <span class="source-line-no">092</span><span id="line-92"> this.hostingServer = ProtobufUtil.toServerName(state.getHostingServer());</span> |
| <span class="source-line-no">093</span><span id="line-93"> if (state.hasDestinationServer()) {</span> |
| <span class="source-line-no">094</span><span id="line-94"> this.destinationServer = ProtobufUtil.toServerName(state.getDestinationServer());</span> |
| <span class="source-line-no">095</span><span id="line-95"> }</span> |
| <span class="source-line-no">096</span><span id="line-96"> removeAfterUnassigning = state.getRemoveAfterUnassigning();</span> |
| <span class="source-line-no">097</span><span id="line-97"> if (state.hasAttempt()) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> setAttempt(state.getAttempt());</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"></span> |
| <span class="source-line-no">102</span><span id="line-102"> @Override</span> |
| <span class="source-line-no">103</span><span id="line-103"> protected boolean startTransition(final MasterProcedureEnv env,</span> |
| <span class="source-line-no">104</span><span id="line-104"> final RegionStateNode regionNode) {</span> |
| <span class="source-line-no">105</span><span id="line-105"> // nothing to do here. we skip the step in the constructor</span> |
| <span class="source-line-no">106</span><span id="line-106"> // by jumping to REGION_TRANSITION_DISPATCH</span> |
| <span class="source-line-no">107</span><span id="line-107"> throw new UnsupportedOperationException();</span> |
| <span class="source-line-no">108</span><span id="line-108"> }</span> |
| <span class="source-line-no">109</span><span id="line-109"></span> |
| <span class="source-line-no">110</span><span id="line-110"> @Override</span> |
| <span class="source-line-no">111</span><span id="line-111"> protected boolean updateTransition(final MasterProcedureEnv env, final RegionStateNode regionNode)</span> |
| <span class="source-line-no">112</span><span id="line-112"> throws IOException {</span> |
| <span class="source-line-no">113</span><span id="line-113"> return true;</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> @Override</span> |
| <span class="source-line-no">117</span><span id="line-117"> protected void finishTransition(final MasterProcedureEnv env, final RegionStateNode regionNode)</span> |
| <span class="source-line-no">118</span><span id="line-118"> throws IOException {</span> |
| <span class="source-line-no">119</span><span id="line-119"> }</span> |
| <span class="source-line-no">120</span><span id="line-120"></span> |
| <span class="source-line-no">121</span><span id="line-121"> @Override</span> |
| <span class="source-line-no">122</span><span id="line-122"> public Optional<RemoteOperation> remoteCallBuild(final MasterProcedureEnv env,</span> |
| <span class="source-line-no">123</span><span id="line-123"> final ServerName serverName) {</span> |
| <span class="source-line-no">124</span><span id="line-124"> return Optional.empty();</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> @Override</span> |
| <span class="source-line-no">128</span><span id="line-128"> protected void reportTransition(final MasterProcedureEnv env, final RegionStateNode regionNode,</span> |
| <span class="source-line-no">129</span><span id="line-129"> final TransitionCode code, final long seqId) throws UnexpectedStateException {</span> |
| <span class="source-line-no">130</span><span id="line-130"> }</span> |
| <span class="source-line-no">131</span><span id="line-131"></span> |
| <span class="source-line-no">132</span><span id="line-132"> /**</span> |
| <span class="source-line-no">133</span><span id="line-133"> * Returns If true, we will re-wake up this procedure; if false, the procedure stays suspended.</span> |
| <span class="source-line-no">134</span><span id="line-134"> */</span> |
| <span class="source-line-no">135</span><span id="line-135"> @Override</span> |
| <span class="source-line-no">136</span><span id="line-136"> protected boolean remoteCallFailed(final MasterProcedureEnv env, final RegionStateNode regionNode,</span> |
| <span class="source-line-no">137</span><span id="line-137"> final IOException exception) {</span> |
| <span class="source-line-no">138</span><span id="line-138"> return true;</span> |
| <span class="source-line-no">139</span><span id="line-139"> }</span> |
| <span class="source-line-no">140</span><span id="line-140"></span> |
| <span class="source-line-no">141</span><span id="line-141"> @Override</span> |
| <span class="source-line-no">142</span><span id="line-142"> public void toStringClassDetails(StringBuilder sb) {</span> |
| <span class="source-line-no">143</span><span id="line-143"> super.toStringClassDetails(sb);</span> |
| <span class="source-line-no">144</span><span id="line-144"> sb.append(", server=").append(this.hostingServer);</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"></span> |
| <span class="source-line-no">147</span><span id="line-147"> @Override</span> |
| <span class="source-line-no">148</span><span id="line-148"> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {</span> |
| <span class="source-line-no">149</span><span id="line-149"> return env.getAssignmentManager().getAssignmentManagerMetrics().getUnassignProcMetrics();</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151">}</span> |
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| </pre> |
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