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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.fs.FileSystem;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.backup.HFileArchiver;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.favored.FavoredNodesManager;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.master.MasterFileSystem;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.master.MasterServices;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineRegionProcedure;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.procedure2.ProcedureYieldException;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.CommonFSUtils;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.slf4j.Logger;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">037</span><span id="line-37"></span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hbase.thirdparty.com.google.common.collect.Lists;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionState;</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44">/**</span> |
| <span class="source-line-no">045</span><span id="line-45"> * GC a Region that is no longer in use. It has been split or merged away. Caller determines if it</span> |
| <span class="source-line-no">046</span><span id="line-46"> * is GC time. This Procedure does not check.</span> |
| <span class="source-line-no">047</span><span id="line-47"> * <p></span> |
| <span class="source-line-no">048</span><span id="line-48"> * This is a Region StateMachine Procedure. We take a read lock on the Table and then exclusive on</span> |
| <span class="source-line-no">049</span><span id="line-49"> * the Region.</span> |
| <span class="source-line-no">050</span><span id="line-50"> */</span> |
| <span class="source-line-no">051</span><span id="line-51">@InterfaceAudience.Private</span> |
| <span class="source-line-no">052</span><span id="line-52">public class GCRegionProcedure extends AbstractStateMachineRegionProcedure<GCRegionState> {</span> |
| <span class="source-line-no">053</span><span id="line-53"> private static final Logger LOG = LoggerFactory.getLogger(GCRegionProcedure.class);</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> public GCRegionProcedure(final MasterProcedureEnv env, final RegionInfo hri) {</span> |
| <span class="source-line-no">056</span><span id="line-56"> super(env, hri);</span> |
| <span class="source-line-no">057</span><span id="line-57"> }</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> public GCRegionProcedure() {</span> |
| <span class="source-line-no">060</span><span id="line-60"> // Required by the Procedure framework to create the procedure on replay</span> |
| <span class="source-line-no">061</span><span id="line-61"> super();</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> @Override</span> |
| <span class="source-line-no">065</span><span id="line-65"> public TableOperationType getTableOperationType() {</span> |
| <span class="source-line-no">066</span><span id="line-66"> return TableOperationType.REGION_GC;</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 Flow executeFromState(MasterProcedureEnv env, GCRegionState state)</span> |
| <span class="source-line-no">071</span><span id="line-71"> throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {</span> |
| <span class="source-line-no">072</span><span id="line-72"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">073</span><span id="line-73"> LOG.trace(this + " execute state=" + state);</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> MasterServices masterServices = env.getMasterServices();</span> |
| <span class="source-line-no">076</span><span id="line-76"> try {</span> |
| <span class="source-line-no">077</span><span id="line-77"> switch (state) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> case GC_REGION_PREPARE:</span> |
| <span class="source-line-no">079</span><span id="line-79"> // Nothing to do to prepare.</span> |
| <span class="source-line-no">080</span><span id="line-80"> setNextState(GCRegionState.GC_REGION_ARCHIVE);</span> |
| <span class="source-line-no">081</span><span id="line-81"> break;</span> |
| <span class="source-line-no">082</span><span id="line-82"> case GC_REGION_ARCHIVE:</span> |
| <span class="source-line-no">083</span><span id="line-83"> MasterFileSystem mfs = masterServices.getMasterFileSystem();</span> |
| <span class="source-line-no">084</span><span id="line-84"> FileSystem fs = mfs.getFileSystem();</span> |
| <span class="source-line-no">085</span><span id="line-85"> if (HFileArchiver.exists(masterServices.getConfiguration(), fs, getRegion())) {</span> |
| <span class="source-line-no">086</span><span id="line-86"> if (LOG.isDebugEnabled()) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> LOG.debug("Archiving region=" + getRegion().getShortNameToLog());</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"> HFileArchiver.archiveRegion(masterServices.getConfiguration(), fs, getRegion());</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"> FileSystem walFs = mfs.getWALFileSystem();</span> |
| <span class="source-line-no">092</span><span id="line-92"> // Cleanup the directories on WAL filesystem also</span> |
| <span class="source-line-no">093</span><span id="line-93"> Path regionWALDir = CommonFSUtils.getWALRegionDir(env.getMasterConfiguration(),</span> |
| <span class="source-line-no">094</span><span id="line-94"> getRegion().getTable(), getRegion().getEncodedName());</span> |
| <span class="source-line-no">095</span><span id="line-95"> if (walFs.exists(regionWALDir)) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> if (!walFs.delete(regionWALDir, true)) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> LOG.debug("Failed to delete {}", regionWALDir);</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"> Path wrongRegionWALDir = CommonFSUtils.getWrongWALRegionDir(env.getMasterConfiguration(),</span> |
| <span class="source-line-no">101</span><span id="line-101"> getRegion().getTable(), getRegion().getEncodedName());</span> |
| <span class="source-line-no">102</span><span id="line-102"> if (walFs.exists(wrongRegionWALDir)) {</span> |
| <span class="source-line-no">103</span><span id="line-103"> if (!walFs.delete(wrongRegionWALDir, true)) {</span> |
| <span class="source-line-no">104</span><span id="line-104"> LOG.debug("Failed to delete {}", regionWALDir);</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"> setNextState(GCRegionState.GC_REGION_PURGE_METADATA);</span> |
| <span class="source-line-no">108</span><span id="line-108"> break;</span> |
| <span class="source-line-no">109</span><span id="line-109"> case GC_REGION_PURGE_METADATA:</span> |
| <span class="source-line-no">110</span><span id="line-110"> // TODO: Purge metadata before removing from HDFS? This ordering is copied</span> |
| <span class="source-line-no">111</span><span id="line-111"> // from CatalogJanitor.</span> |
| <span class="source-line-no">112</span><span id="line-112"> AssignmentManager am = masterServices.getAssignmentManager();</span> |
| <span class="source-line-no">113</span><span id="line-113"> if (am != null) {</span> |
| <span class="source-line-no">114</span><span id="line-114"> if (am.getRegionStates() != null) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> am.getRegionStates().deleteRegion(getRegion());</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"> }</span> |
| <span class="source-line-no">118</span><span id="line-118"> env.getAssignmentManager().getRegionStateStore().deleteRegion(getRegion());</span> |
| <span class="source-line-no">119</span><span id="line-119"> masterServices.getServerManager().removeRegion(getRegion());</span> |
| <span class="source-line-no">120</span><span id="line-120"> FavoredNodesManager fnm = masterServices.getFavoredNodesManager();</span> |
| <span class="source-line-no">121</span><span id="line-121"> if (fnm != null) {</span> |
| <span class="source-line-no">122</span><span id="line-122"> fnm.deleteFavoredNodesForRegions(Lists.newArrayList(getRegion()));</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> return Flow.NO_MORE_STATE;</span> |
| <span class="source-line-no">125</span><span id="line-125"> default:</span> |
| <span class="source-line-no">126</span><span id="line-126"> throw new UnsupportedOperationException(this + " unhandled state=" + state);</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"> } catch (IOException ioe) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> // TODO: This is going to spew log? Add retry backoff</span> |
| <span class="source-line-no">130</span><span id="line-130"> LOG.warn("Error trying to GC " + getRegion().getShortNameToLog() + "; retrying...", ioe);</span> |
| <span class="source-line-no">131</span><span id="line-131"> }</span> |
| <span class="source-line-no">132</span><span id="line-132"> return Flow.HAS_MORE_STATE;</span> |
| <span class="source-line-no">133</span><span id="line-133"> }</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 void rollbackState(MasterProcedureEnv env, GCRegionState state)</span> |
| <span class="source-line-no">137</span><span id="line-137"> throws IOException, InterruptedException {</span> |
| <span class="source-line-no">138</span><span id="line-138"> // no-op</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"> protected GCRegionState getState(int stateId) {</span> |
| <span class="source-line-no">143</span><span id="line-143"> return GCRegionState.forNumber(stateId);</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> @Override</span> |
| <span class="source-line-no">147</span><span id="line-147"> protected int getStateId(GCRegionState state) {</span> |
| <span class="source-line-no">148</span><span id="line-148"> return state.getNumber();</span> |
| <span class="source-line-no">149</span><span id="line-149"> }</span> |
| <span class="source-line-no">150</span><span id="line-150"></span> |
| <span class="source-line-no">151</span><span id="line-151"> @Override</span> |
| <span class="source-line-no">152</span><span id="line-152"> protected GCRegionState getInitialState() {</span> |
| <span class="source-line-no">153</span><span id="line-153"> return GCRegionState.GC_REGION_PREPARE;</span> |
| <span class="source-line-no">154</span><span id="line-154"> }</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> @Override</span> |
| <span class="source-line-no">157</span><span id="line-157"> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">158</span><span id="line-158"> super.serializeStateData(serializer);</span> |
| <span class="source-line-no">159</span><span id="line-159"> // Double serialization of regionname. Superclass is also serializing. Fix.</span> |
| <span class="source-line-no">160</span><span id="line-160"> final MasterProcedureProtos.GCRegionStateData.Builder msg =</span> |
| <span class="source-line-no">161</span><span id="line-161"> MasterProcedureProtos.GCRegionStateData.newBuilder()</span> |
| <span class="source-line-no">162</span><span id="line-162"> .setRegionInfo(ProtobufUtil.toRegionInfo(getRegion()));</span> |
| <span class="source-line-no">163</span><span id="line-163"> serializer.serialize(msg.build());</span> |
| <span class="source-line-no">164</span><span id="line-164"> }</span> |
| <span class="source-line-no">165</span><span id="line-165"></span> |
| <span class="source-line-no">166</span><span id="line-166"> @Override</span> |
| <span class="source-line-no">167</span><span id="line-167"> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">168</span><span id="line-168"> super.deserializeStateData(serializer);</span> |
| <span class="source-line-no">169</span><span id="line-169"> final MasterProcedureProtos.GCRegionStateData msg =</span> |
| <span class="source-line-no">170</span><span id="line-170"> serializer.deserialize(MasterProcedureProtos.GCRegionStateData.class);</span> |
| <span class="source-line-no">171</span><span id="line-171"> setRegion(ProtobufUtil.toRegionInfo(msg.getRegionInfo()));</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
