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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 org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.client.RegionInfo;</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.RegionState.State;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.master.procedure.RSProcedureDispatcher.RegionCloseOperation;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">031</span><span id="line-31"></span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseRegionProcedureStateData;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;</span> |
| <span class="source-line-no">035</span><span id="line-35"></span> |
| <span class="source-line-no">036</span><span id="line-36">/**</span> |
| <span class="source-line-no">037</span><span id="line-37"> * The remote procedure used to close a region.</span> |
| <span class="source-line-no">038</span><span id="line-38"> */</span> |
| <span class="source-line-no">039</span><span id="line-39">@InterfaceAudience.Private</span> |
| <span class="source-line-no">040</span><span id="line-40">public class CloseRegionProcedure extends RegionRemoteProcedureBase {</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42"> // For a region move operation, we will assign the region after we unassign it, this is the target</span> |
| <span class="source-line-no">043</span><span id="line-43"> // server for the subsequent assign. We will send this value to RS, and RS will record the region</span> |
| <span class="source-line-no">044</span><span id="line-44"> // in a Map to tell client that where the region has been moved to. Can be null. And also, can be</span> |
| <span class="source-line-no">045</span><span id="line-45"> // wrong(but do not make it wrong intentionally). The client can handle this error.</span> |
| <span class="source-line-no">046</span><span id="line-46"> private ServerName assignCandidate;</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 isSplit;</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 CloseRegionProcedure() {</span> |
| <span class="source-line-no">051</span><span id="line-51"> super();</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> public CloseRegionProcedure(TransitRegionStateProcedure parent, RegionInfo region,</span> |
| <span class="source-line-no">055</span><span id="line-55"> ServerName targetServer, ServerName assignCandidate, boolean isSplit) {</span> |
| <span class="source-line-no">056</span><span id="line-56"> super(parent, region, targetServer);</span> |
| <span class="source-line-no">057</span><span id="line-57"> this.assignCandidate = assignCandidate;</span> |
| <span class="source-line-no">058</span><span id="line-58"> this.isSplit = isSplit;</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> @Override</span> |
| <span class="source-line-no">062</span><span id="line-62"> public TableOperationType getTableOperationType() {</span> |
| <span class="source-line-no">063</span><span id="line-63"> return TableOperationType.REGION_UNASSIGN;</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> @Override</span> |
| <span class="source-line-no">067</span><span id="line-67"> public RemoteOperation newRemoteOperation(MasterProcedureEnv env) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> return new RegionCloseOperation(this, region, getProcId(), assignCandidate, isSplit,</span> |
| <span class="source-line-no">069</span><span id="line-69"> env.getMasterServices().getMasterActiveTime());</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> @Override</span> |
| <span class="source-line-no">073</span><span id="line-73"> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">074</span><span id="line-74"> super.serializeStateData(serializer);</span> |
| <span class="source-line-no">075</span><span id="line-75"> CloseRegionProcedureStateData.Builder builder = CloseRegionProcedureStateData.newBuilder();</span> |
| <span class="source-line-no">076</span><span id="line-76"> if (assignCandidate != null) {</span> |
| <span class="source-line-no">077</span><span id="line-77"> builder.setAssignCandidate(ProtobufUtil.toServerName(assignCandidate));</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"> builder.setEvictCache(isSplit);</span> |
| <span class="source-line-no">080</span><span id="line-80"> serializer.serialize(builder.build());</span> |
| <span class="source-line-no">081</span><span id="line-81"> }</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> @Override</span> |
| <span class="source-line-no">084</span><span id="line-84"> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">085</span><span id="line-85"> super.deserializeStateData(serializer);</span> |
| <span class="source-line-no">086</span><span id="line-86"> CloseRegionProcedureStateData data =</span> |
| <span class="source-line-no">087</span><span id="line-87"> serializer.deserialize(CloseRegionProcedureStateData.class);</span> |
| <span class="source-line-no">088</span><span id="line-88"> if (data.hasAssignCandidate()) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> assignCandidate = ProtobufUtil.toServerName(data.getAssignCandidate());</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"> isSplit = data.getEvictCache();</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> @Override</span> |
| <span class="source-line-no">095</span><span id="line-95"> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> return env.getAssignmentManager().getAssignmentManagerMetrics().getCloseProcMetrics();</span> |
| <span class="source-line-no">097</span><span id="line-97"> }</span> |
| <span class="source-line-no">098</span><span id="line-98"></span> |
| <span class="source-line-no">099</span><span id="line-99"> @Override</span> |
| <span class="source-line-no">100</span><span id="line-100"> protected void checkTransition(RegionStateNode regionNode, TransitionCode transitionCode,</span> |
| <span class="source-line-no">101</span><span id="line-101"> long seqId) throws UnexpectedStateException {</span> |
| <span class="source-line-no">102</span><span id="line-102"> if (transitionCode != TransitionCode.CLOSED) {</span> |
| <span class="source-line-no">103</span><span id="line-103"> throw new UnexpectedStateException("Received report unexpected " + transitionCode</span> |
| <span class="source-line-no">104</span><span id="line-104"> + " transition, " + regionNode.toShortString() + ", " + this + ", expected CLOSED.");</span> |
| <span class="source-line-no">105</span><span id="line-105"> }</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> @Override</span> |
| <span class="source-line-no">109</span><span id="line-109"> protected void updateTransitionWithoutPersistingToMeta(MasterProcedureEnv env,</span> |
| <span class="source-line-no">110</span><span id="line-110"> RegionStateNode regionNode, TransitionCode transitionCode, long seqId) throws IOException {</span> |
| <span class="source-line-no">111</span><span id="line-111"> assert transitionCode == TransitionCode.CLOSED;</span> |
| <span class="source-line-no">112</span><span id="line-112"> env.getAssignmentManager().regionClosedWithoutPersistingToMeta(regionNode);</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"></span> |
| <span class="source-line-no">115</span><span id="line-115"> @Override</span> |
| <span class="source-line-no">116</span><span id="line-116"> protected void restoreSucceedState(AssignmentManager am, RegionStateNode regionNode, long seqId)</span> |
| <span class="source-line-no">117</span><span id="line-117"> throws IOException {</span> |
| <span class="source-line-no">118</span><span id="line-118"> if (regionNode.getState() == State.CLOSED) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> // should have already been persisted, ignore</span> |
| <span class="source-line-no">120</span><span id="line-120"> return;</span> |
| <span class="source-line-no">121</span><span id="line-121"> }</span> |
| <span class="source-line-no">122</span><span id="line-122"> am.regionClosedWithoutPersistingToMeta(regionNode);</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124">}</span> |
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| </pre> |
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