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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.ArrayList;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Arrays;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Collection;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Collections;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.stream.Stream;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.conf.Configuration;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.fs.FileSystem;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.fs.Path;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.MetaMutationAnnotation;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.ServerName;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.TableName;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.DoNotRetryRegionException;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.exceptions.MergeRegionException;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.normalizer.NormalizationPlan;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.master.procedure.AbstractStateMachineTableProcedure;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.quotas.QuotaExceededException;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.regionserver.HStoreFile;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.regionserver.StoreUtils;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTracker;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.wal.WALSplitUtil;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.slf4j.Logger;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>import org.slf4j.LoggerFactory;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.MergeTableRegionsState;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span>/**<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * The procedure to Merge regions in a table. This procedure takes an exclusive table lock since it<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * is working over multiple regions. It holds the lock for the life of the procedure. Throws<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * exception on construction if determines context hostile to merge (cluster going down or master is<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * shutting down or table is disabled).<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span>@InterfaceAudience.Private<a name="line.78"></a> |
| <span class="sourceLineNo">079</span>public class MergeTableRegionsProcedure<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> extends AbstractStateMachineTableProcedure<MergeTableRegionsState> {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private static final Logger LOG = LoggerFactory.getLogger(MergeTableRegionsProcedure.class);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private ServerName regionLocation;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> /**<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Two or more regions to merge, the 'merge parents'.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> */<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private RegionInfo[] regionsToMerge;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> /**<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * The resulting merged region.<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> */<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> private RegionInfo mergedRegion;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span><a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private boolean force;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public MergeTableRegionsProcedure() {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // Required by the Procedure framework to create the procedure on replay<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public MergeTableRegionsProcedure(final MasterProcedureEnv env, final RegionInfo[] regionsToMerge,<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> final boolean force) throws IOException {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> super(env);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> // Check parent regions. Make sure valid before starting work.<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> // This check calls the super method #checkOnline also.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> checkRegionsToMerge(env, regionsToMerge, force);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> // Sort the regions going into the merge.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> Arrays.sort(regionsToMerge);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> this.regionsToMerge = regionsToMerge;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> this.mergedRegion = createMergedRegionInfo(regionsToMerge);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // Preflight depends on mergedRegion being set (at least).<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> preflightChecks(env, true);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> this.force = force;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<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> * @throws MergeRegionException If unable to merge regions for whatever reasons.<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> */<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> private static void checkRegionsToMerge(MasterProcedureEnv env, final RegionInfo[] regions,<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> final boolean force) throws MergeRegionException {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> long count = Arrays.stream(regions).distinct().count();<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> if (regions.length != count) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> throw new MergeRegionException("Duplicate regions specified; cannot merge a region to "<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> + "itself. Passed in " + regions.length + " but only " + count + " unique.");<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (count < 2) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> throw new MergeRegionException("Need two Regions at least to run a Merge");<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> RegionInfo previous = null;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> for (RegionInfo ri : regions) {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> if (previous != null) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> if (!previous.getTable().equals(ri.getTable())) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> String msg = "Can't merge regions from different tables: " + previous + ", " + ri;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> LOG.warn(msg);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> throw new MergeRegionException(msg);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> }<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> if (!force && !ri.isAdjacent(previous) && !ri.isOverlap(previous)) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> String msg = "Unable to merge non-adjacent or non-overlapping regions '"<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> + previous.getShortNameToLog() + "', '" + ri.getShortNameToLog() + "' when force=false";<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> LOG.warn(msg);<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> throw new MergeRegionException(msg);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> }<a name="line.142"></a> |
| <span class="sourceLineNo">143</span><a name="line.143"></a> |
| <span class="sourceLineNo">144</span> if (ri.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> throw new MergeRegionException("Can't merge non-default replicas; " + ri);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> try {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> checkOnline(env, ri);<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> } catch (DoNotRetryRegionException dnrre) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> throw new MergeRegionException(dnrre);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> previous = ri;<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> /**<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> * Create merged region info by looking at passed in <code>regionsToMerge</code> to figure what<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * extremes for start and end keys to use; merged region needs to have an extent sufficient to<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * cover all regions-to-merge.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> */<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> private static RegionInfo createMergedRegionInfo(final RegionInfo[] regionsToMerge) {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> byte[] lowestStartKey = null;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> byte[] highestEndKey = null;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> // Region Id is a timestamp. Merged region's id can't be less than that of<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> // merging regions else will insert at wrong location in hbase:meta (See HBASE-710).<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> long highestRegionId = -1;<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> for (RegionInfo ri : regionsToMerge) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> if (lowestStartKey == null) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> lowestStartKey = ri.getStartKey();<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> } else if (Bytes.compareTo(ri.getStartKey(), lowestStartKey) < 0) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> lowestStartKey = ri.getStartKey();<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> if (highestEndKey == null) {<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> highestEndKey = ri.getEndKey();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> } else if (ri.isLast() || Bytes.compareTo(ri.getEndKey(), highestEndKey) > 0) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> highestEndKey = ri.getEndKey();<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> highestRegionId = ri.getRegionId() > highestRegionId ? ri.getRegionId() : highestRegionId;<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // Merged region is sorted between two merging regions in META<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> return RegionInfoBuilder.newBuilder(regionsToMerge[0].getTable()).setStartKey(lowestStartKey)<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> .setEndKey(highestEndKey).setSplit(false)<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> .setRegionId(highestRegionId + 1/* Add one so new merged region is highest */).build();<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span><a name="line.186"></a> |
| <span class="sourceLineNo">187</span> @Override<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> protected Flow executeFromState(final MasterProcedureEnv env, MergeTableRegionsState state) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> LOG.trace("{} execute state={}", this, state);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> try {<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> switch (state) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> case MERGE_TABLE_REGIONS_PREPARE:<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> if (!prepareMergeRegion(env)) {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> assert isFailed() : "Merge region should have an exception here";<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> return Flow.NO_MORE_STATE;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> }<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> break;<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> case MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION:<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> preMergeRegions(env);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_CLOSE_REGIONS);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> break;<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> case MERGE_TABLE_REGIONS_CLOSE_REGIONS:<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> addChildProcedure(createUnassignProcedures(env));<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_CHECK_CLOSED_REGIONS);<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> break;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> case MERGE_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> checkClosedRegions(env);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_CREATE_MERGED_REGION);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> break;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> case MERGE_TABLE_REGIONS_CREATE_MERGED_REGION:<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> removeNonDefaultReplicas(env);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> createMergedRegion(env);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_WRITE_MAX_SEQUENCE_ID_FILE);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> break;<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> case MERGE_TABLE_REGIONS_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> writeMaxSequenceIdFile(env);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> break;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> case MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION:<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> preMergeRegionsCommit(env);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_UPDATE_META);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> break;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> updateMetaForMergedRegions(env);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION);<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> break;<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> postMergeRegionsCommit(env);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_OPEN_MERGED_REGION);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> break;<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> addChildProcedure(createAssignProcedures(env));<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> setNextState(MergeTableRegionsState.MERGE_TABLE_REGIONS_POST_OPERATION);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> break;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> postCompletedMergeRegions(env);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> return Flow.NO_MORE_STATE;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> default:<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> } catch (IOException e) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> String msg = "Error trying to merge " + RegionInfo.getShortNameToLog(regionsToMerge) + " in "<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> + getTableName() + " (in state=" + state + ")";<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> if (!isRollbackSupported(state)) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> // We reach a state that cannot be rolled back. We just need to keep retrying.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> LOG.warn(msg, e);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> } else {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> LOG.error(msg, e);<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> setFailure("master-merge-regions", e);<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> return Flow.HAS_MORE_STATE;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span><a name="line.255"></a> |
| <span class="sourceLineNo">256</span> /**<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * To rollback {@link MergeTableRegionsProcedure}, two AssignProcedures are asynchronously<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * submitted for each region to be merged (rollback doesn't wait on the completion of the<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * AssignProcedures) . This can be improved by changing rollback() to support sub-procedures. See<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * HBASE-19851 for details.<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> */<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> @Override<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> protected void rollbackState(final MasterProcedureEnv env, final MergeTableRegionsState state)<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> throws IOException {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> LOG.trace("{} rollback state={}", this, state);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span><a name="line.266"></a> |
| <span class="sourceLineNo">267</span> try {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> switch (state) {<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> String msg = this + " We are in the " + state + " state."<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> + " It is complicated to rollback the merge operation that region server is working on."<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> + " Rollback is not supported and we should let the merge operation to complete";<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> LOG.warn(msg);<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> // PONR<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> case MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION:<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> break;<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> case MERGE_TABLE_REGIONS_CREATE_MERGED_REGION:<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> case MERGE_TABLE_REGIONS_WRITE_MAX_SEQUENCE_ID_FILE:<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> cleanupMergedRegion(env);<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> break;<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> case MERGE_TABLE_REGIONS_CHECK_CLOSED_REGIONS:<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> break;<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> case MERGE_TABLE_REGIONS_CLOSE_REGIONS:<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> rollbackCloseRegionsForMerge(env);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> break;<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> case MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION:<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> postRollBackMergeRegions(env);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> break;<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> case MERGE_TABLE_REGIONS_PREPARE:<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> rollbackPrepareMerge(env);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> break;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> default:<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> } catch (Exception e) {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> // This will be retried. Unless there is a bug in the code,<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> // this should be just a "temporary error" (e.g. network down)<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> LOG.warn("Failed rollback attempt step " + state + " for merging the regions "<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> + RegionInfo.getShortNameToLog(regionsToMerge) + " in table " + getTableName(), e);<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> throw e;<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> /*<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * Check whether we are in the state that can be rolled back<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> */<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> @Override<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> protected boolean isRollbackSupported(final MergeTableRegionsState state) {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> switch (state) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> // It is not safe to rollback in these states.<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> return false;<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> default:<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> break;<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> }<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> return true;<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> }<a name="line.324"></a> |
| <span class="sourceLineNo">325</span><a name="line.325"></a> |
| <span class="sourceLineNo">326</span> private void removeNonDefaultReplicas(MasterProcedureEnv env) throws IOException {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> AssignmentManagerUtil.removeNonDefaultReplicas(env, Stream.of(regionsToMerge),<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> getRegionReplication(env));<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> private void checkClosedRegions(MasterProcedureEnv env) throws IOException {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> // Theoretically this should not happen any more after we use TRSP, but anyway<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> // let's add a check here<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> for (RegionInfo region : regionsToMerge) {<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> AssignmentManagerUtil.checkClosedRegion(env, region);<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> }<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span> @Override<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> protected MergeTableRegionsState getState(final int stateId) {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> return MergeTableRegionsState.forNumber(stateId);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> }<a name="line.342"></a> |
| <span class="sourceLineNo">343</span><a name="line.343"></a> |
| <span class="sourceLineNo">344</span> @Override<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> protected int getStateId(final MergeTableRegionsState state) {<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> return state.getNumber();<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> }<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> @Override<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> protected MergeTableRegionsState getInitialState() {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> return MergeTableRegionsState.MERGE_TABLE_REGIONS_PREPARE;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span><a name="line.353"></a> |
| <span class="sourceLineNo">354</span> @Override<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> super.serializeStateData(serializer);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span><a name="line.357"></a> |
| <span class="sourceLineNo">358</span> final MasterProcedureProtos.MergeTableRegionsStateData.Builder mergeTableRegionsMsg =<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> MasterProcedureProtos.MergeTableRegionsStateData.newBuilder()<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> .setMergedRegionInfo(ProtobufUtil.toRegionInfo(mergedRegion)).setForcible(force);<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> for (RegionInfo ri : regionsToMerge) {<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> mergeTableRegionsMsg.addRegionInfo(ProtobufUtil.toRegionInfo(ri));<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> serializer.serialize(mergeTableRegionsMsg.build());<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> }<a name="line.366"></a> |
| <span class="sourceLineNo">367</span><a name="line.367"></a> |
| <span class="sourceLineNo">368</span> @Override<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> super.deserializeStateData(serializer);<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> final MasterProcedureProtos.MergeTableRegionsStateData mergeTableRegionsMsg =<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> serializer.deserialize(MasterProcedureProtos.MergeTableRegionsStateData.class);<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> setUser(MasterProcedureUtil.toUserInfo(mergeTableRegionsMsg.getUserInfo()));<a name="line.374"></a> |
| <span class="sourceLineNo">375</span><a name="line.375"></a> |
| <span class="sourceLineNo">376</span> assert (mergeTableRegionsMsg.getRegionInfoCount() == 2);<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> regionsToMerge = new RegionInfo[mergeTableRegionsMsg.getRegionInfoCount()];<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> for (int i = 0; i < regionsToMerge.length; i++) {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> regionsToMerge[i] = ProtobufUtil.toRegionInfo(mergeTableRegionsMsg.getRegionInfo(i));<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> }<a name="line.380"></a> |
| <span class="sourceLineNo">381</span><a name="line.381"></a> |
| <span class="sourceLineNo">382</span> mergedRegion = ProtobufUtil.toRegionInfo(mergeTableRegionsMsg.getMergedRegionInfo());<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> @Override<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> sb.append(getClass().getSimpleName());<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> sb.append(" table=");<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> sb.append(getTableName());<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> sb.append(", regions=");<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> sb.append(RegionInfo.getShortNameToLog(regionsToMerge));<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> sb.append(", force=");<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> sb.append(force);<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> @Override<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> protected LockState acquireLock(final MasterProcedureEnv env) {<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> RegionInfo[] lockRegions = Arrays.copyOf(regionsToMerge, regionsToMerge.length + 1);<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> lockRegions[lockRegions.length - 1] = mergedRegion;<a name="line.399"></a> |
| <span class="sourceLineNo">400</span><a name="line.400"></a> |
| <span class="sourceLineNo">401</span> if (env.getProcedureScheduler().waitRegions(this, getTableName(), lockRegions)) {<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> try {<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> LOG.debug(LockState.LOCK_EVENT_WAIT + " " + env.getProcedureScheduler().dumpLocks());<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> } catch (IOException e) {<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> // Ignore, just for logging<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> return LockState.LOCK_EVENT_WAIT;<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> }<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> return LockState.LOCK_ACQUIRED;<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> }<a name="line.410"></a> |
| <span class="sourceLineNo">411</span><a name="line.411"></a> |
| <span class="sourceLineNo">412</span> @Override<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> protected void releaseLock(final MasterProcedureEnv env) {<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> RegionInfo[] lockRegions = Arrays.copyOf(regionsToMerge, regionsToMerge.length + 1);<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> lockRegions[lockRegions.length - 1] = mergedRegion;<a name="line.415"></a> |
| <span class="sourceLineNo">416</span><a name="line.416"></a> |
| <span class="sourceLineNo">417</span> env.getProcedureScheduler().wakeRegions(this, getTableName(), lockRegions);<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> }<a name="line.418"></a> |
| <span class="sourceLineNo">419</span><a name="line.419"></a> |
| <span class="sourceLineNo">420</span> @Override<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> protected boolean holdLock(MasterProcedureEnv env) {<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> return true;<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> }<a name="line.423"></a> |
| <span class="sourceLineNo">424</span><a name="line.424"></a> |
| <span class="sourceLineNo">425</span> @Override<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> public TableName getTableName() {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> return mergedRegion.getTable();<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> }<a name="line.428"></a> |
| <span class="sourceLineNo">429</span><a name="line.429"></a> |
| <span class="sourceLineNo">430</span> @Override<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> public TableOperationType getTableOperationType() {<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> return TableOperationType.REGION_MERGE;<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> }<a name="line.433"></a> |
| <span class="sourceLineNo">434</span><a name="line.434"></a> |
| <span class="sourceLineNo">435</span> @Override<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getMergeProcMetrics();<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> }<a name="line.438"></a> |
| <span class="sourceLineNo">439</span><a name="line.439"></a> |
| <span class="sourceLineNo">440</span> /**<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> * Prepare merge and do some check<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> */<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> private boolean prepareMergeRegion(final MasterProcedureEnv env) throws IOException {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> // Fail if we are taking snapshot for the given table<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> TableName tn = regionsToMerge[0].getTable();<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> if (env.getMasterServices().getSnapshotManager().isTableTakingAnySnapshot(tn)) {<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> throw new MergeRegionException("Skip merging regions "<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> + RegionInfo.getShortNameToLog(regionsToMerge) + ", because we are snapshotting " + tn);<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> }<a name="line.449"></a> |
| <span class="sourceLineNo">450</span><a name="line.450"></a> |
| <span class="sourceLineNo">451</span> // Mostly this check is not used because we already check the switch before submit a merge<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> // procedure. Just for safe, check the switch again. This procedure can be rollbacked if<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> // the switch was set to false after submit.<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.MERGE)) {<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> String regionsStr = Arrays.deepToString(this.regionsToMerge);<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> LOG.warn("Merge switch is off! skip merge of " + regionsStr);<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> setFailure(getClass().getSimpleName(),<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> new IOException("Merge of " + regionsStr + " failed because merge switch is off"));<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> return false;<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> }<a name="line.460"></a> |
| <span class="sourceLineNo">461</span><a name="line.461"></a> |
| <span class="sourceLineNo">462</span> if (!env.getMasterServices().getTableDescriptors().get(getTableName()).isMergeEnabled()) {<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> String regionsStr = Arrays.deepToString(regionsToMerge);<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> LOG.warn("Merge is disabled for the table! Skipping merge of {}", regionsStr);<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> setFailure(getClass().getSimpleName(), new IOException(<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> "Merge of " + regionsStr + " failed as region merge is disabled for the table"));<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> return false;<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span><a name="line.469"></a> |
| <span class="sourceLineNo">470</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> RegionStateStore regionStateStore = env.getAssignmentManager().getRegionStateStore();<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> for (RegionInfo ri : this.regionsToMerge) {<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> if (regionStateStore.hasMergeRegions(ri)) {<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> String msg = "Skip merging " + RegionInfo.getShortNameToLog(regionsToMerge)<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> + ", because a parent, " + RegionInfo.getShortNameToLog(ri) + ", has a merge qualifier "<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> + "(if a 'merge column' in parent, it was recently merged but still has outstanding "<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> + "references to its parents that must be cleared before it can participate in merge -- "<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> + "major compact it to hurry clearing of its references)";<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> LOG.warn(msg);<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> throw new MergeRegionException(msg);<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> }<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> RegionState state = regionStates.getRegionState(ri.getEncodedName());<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> if (state == null) {<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> throw new UnknownRegionException(<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> RegionInfo.getShortNameToLog(ri) + " UNKNOWN (Has it been garbage collected?)");<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> }<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> if (!state.isOpened()) {<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> throw new MergeRegionException("Unable to merge regions that are NOT online: " + ri);<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> }<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // Ask the remote regionserver if regions are mergeable. If we get an IOE, report it<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> // along with the failure, so we can see why regions are not mergeable at this time.<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> try {<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> if (!isMergeable(env, state)) {<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> setFailure(getClass().getSimpleName(),<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> new MergeRegionException("Skip merging " + RegionInfo.getShortNameToLog(regionsToMerge)<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> + ", because a parent, " + RegionInfo.getShortNameToLog(ri) + ", is not mergeable"));<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> return false;<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> }<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> } catch (IOException e) {<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> IOException ioe = new IOException(RegionInfo.getShortNameToLog(ri) + " NOT mergeable", e);<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> setFailure(getClass().getSimpleName(), ioe);<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> return false;<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> }<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> }<a name="line.504"></a> |
| <span class="sourceLineNo">505</span><a name="line.505"></a> |
| <span class="sourceLineNo">506</span> // Update region states to Merging<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> setRegionStateToMerging(env);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> return true;<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> }<a name="line.509"></a> |
| <span class="sourceLineNo">510</span><a name="line.510"></a> |
| <span class="sourceLineNo">511</span> private boolean isMergeable(final MasterProcedureEnv env, final RegionState rs)<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> throws IOException {<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> GetRegionInfoResponse response =<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> AssignmentManagerUtil.getRegionInfoResponse(env, rs.getServerName(), rs.getRegion());<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> return response.hasMergeable() && response.getMergeable();<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> }<a name="line.516"></a> |
| <span class="sourceLineNo">517</span><a name="line.517"></a> |
| <span class="sourceLineNo">518</span> /**<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> * Action for rollback a merge table after prepare merge<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> */<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> private void rollbackPrepareMerge(final MasterProcedureEnv env) throws IOException {<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> for (RegionInfo rinfo : regionsToMerge) {<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> RegionStateNode regionStateNode =<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(rinfo);<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> if (regionStateNode.getState() == State.MERGING) {<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> regionStateNode.setState(State.OPEN);<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> }<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> }<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> }<a name="line.529"></a> |
| <span class="sourceLineNo">530</span><a name="line.530"></a> |
| <span class="sourceLineNo">531</span> /**<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> * Pre merge region action<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> * @param env MasterProcedureEnv<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> **/<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> private void preMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> if (cpHost != null) {<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> cpHost.preMergeRegionsAction(regionsToMerge, getUser());<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> }<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> try {<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> env.getMasterServices().getMasterQuotaManager().onRegionMerged(this.mergedRegion);<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> } catch (QuotaExceededException e) {<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> // TODO: why is this here? merge requests can be submitted by actors other than the normalizer<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> env.getMasterServices().getRegionNormalizerManager()<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> .planSkipped(NormalizationPlan.PlanType.MERGE);<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> throw e;<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> }<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> }<a name="line.549"></a> |
| <span class="sourceLineNo">550</span><a name="line.550"></a> |
| <span class="sourceLineNo">551</span> /**<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> * Action after rollback a merge table regions action.<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> */<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> private void postRollBackMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> if (cpHost != null) {<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> cpHost.postRollBackMergeRegionsAction(regionsToMerge, getUser());<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> }<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> }<a name="line.559"></a> |
| <span class="sourceLineNo">560</span><a name="line.560"></a> |
| <span class="sourceLineNo">561</span> /**<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> * Set the region states to MERGING state<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> */<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> private void setRegionStateToMerging(final MasterProcedureEnv env) {<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> // Set State.MERGING to regions to be merged<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> for (RegionInfo ri : this.regionsToMerge) {<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> regionStates.getRegionStateNode(ri).setState(State.MERGING);<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> }<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> }<a name="line.570"></a> |
| <span class="sourceLineNo">571</span><a name="line.571"></a> |
| <span class="sourceLineNo">572</span> /**<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> * Create merged region. The way the merge works is that we make a 'merges' temporary directory in<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> * the FIRST parent region to merge (Do not change this without also changing the rollback where<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> * we look in this FIRST region for the merge dir). We then collect here references to all the<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> * store files in all the parent regions including those of the FIRST parent region into a<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> * subdirectory, named for the resultant merged region. We then call commitMergeRegion. It finds<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> * this subdirectory of storefile references and moves them under the new merge region (creating<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> * the region layout as side effect). After assign of the new merge region, we will run a<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> * compaction. This will undo the references but the reference files remain in place until the<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> * archiver runs (which it does on a period as a chore in the RegionServer that hosts the merge<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> * region -- see CompactedHFilesDischarger). Once the archiver has moved aside the no-longer used<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> * references, the merge region no longer has references. The catalog janitor will notice when it<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> * runs next and it will remove the old parent regions.<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> */<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> private void createMergedRegion(final MasterProcedureEnv env) throws IOException {<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> final Path tableDir = CommonFSUtils.getTableDir(mfs.getRootDir(), regionsToMerge[0].getTable());<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> final FileSystem fs = mfs.getFileSystem();<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> List<Path> mergedFiles = new ArrayList<>();<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> HRegionFileSystem mergeRegionFs = HRegionFileSystem<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> .createRegionOnFileSystem(env.getMasterConfiguration(), fs, tableDir, mergedRegion);<a name="line.592"></a> |
| <span class="sourceLineNo">593</span><a name="line.593"></a> |
| <span class="sourceLineNo">594</span> for (RegionInfo ri : this.regionsToMerge) {<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> HRegionFileSystem regionFs = HRegionFileSystem<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> .openRegionFromFileSystem(env.getMasterConfiguration(), fs, tableDir, ri, false);<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> mergedFiles.addAll(mergeStoreFiles(env, regionFs, mergeRegionFs, mergedRegion));<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> }<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> assert mergeRegionFs != null;<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> mergeRegionFs.commitMergedRegion(mergedFiles, env);<a name="line.600"></a> |
| <span class="sourceLineNo">601</span><a name="line.601"></a> |
| <span class="sourceLineNo">602</span> // Prepare to create merged regions<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(mergedRegion)<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> .setState(State.MERGING_NEW);<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> }<a name="line.605"></a> |
| <span class="sourceLineNo">606</span><a name="line.606"></a> |
| <span class="sourceLineNo">607</span> private List<Path> mergeStoreFiles(MasterProcedureEnv env, HRegionFileSystem regionFs,<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> HRegionFileSystem mergeRegionFs, RegionInfo mergedRegion) throws IOException {<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> final TableDescriptor htd =<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> env.getMasterServices().getTableDescriptors().get(mergedRegion.getTable());<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> List<Path> mergedFiles = new ArrayList<>();<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> for (ColumnFamilyDescriptor hcd : htd.getColumnFamilies()) {<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> String family = hcd.getNameAsString();<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> StoreFileTracker tracker =<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> StoreFileTrackerFactory.create(env.getMasterConfiguration(), htd, hcd, regionFs);<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> final Collection<StoreFileInfo> storeFiles = tracker.load();<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> if (storeFiles != null && storeFiles.size() > 0) {<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> final Configuration storeConfiguration =<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> StoreUtils.createStoreConfiguration(env.getMasterConfiguration(), htd, hcd);<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> for (StoreFileInfo storeFileInfo : storeFiles) {<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> // Create reference file(s) to parent region file here in mergedDir.<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> // As this procedure is running on master, use CacheConfig.DISABLED means<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> // don't cache any block.<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> // We also need to pass through a suitable CompoundConfiguration as if this<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> // is running in a regionserver's Store context, or we might not be able<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> // to read the hfiles.<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> storeFileInfo.setConf(storeConfiguration);<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> Path refFile = mergeRegionFs.mergeStoreFile(regionFs.getRegionInfo(), family,<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> new HStoreFile(storeFileInfo, hcd.getBloomFilterType(), CacheConfig.DISABLED));<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> mergedFiles.add(refFile);<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> }<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> }<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> }<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> return mergedFiles;<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> }<a name="line.635"></a> |
| <span class="sourceLineNo">636</span><a name="line.636"></a> |
| <span class="sourceLineNo">637</span> /**<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> * Clean up a merged region on rollback after failure.<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> */<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> private void cleanupMergedRegion(final MasterProcedureEnv env) throws IOException {<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> TableName tn = this.regionsToMerge[0].getTable();<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> final Path tabledir = CommonFSUtils.getTableDir(mfs.getRootDir(), tn);<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> final FileSystem fs = mfs.getFileSystem();<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> // See createMergedRegion above where we specify the merge dir as being in the<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> // FIRST merge parent region.<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[0], false);<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> regionFs.cleanupMergedRegion(mergedRegion);<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> }<a name="line.650"></a> |
| <span class="sourceLineNo">651</span><a name="line.651"></a> |
| <span class="sourceLineNo">652</span> /**<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> * Rollback close regions<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> **/<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> private void rollbackCloseRegionsForMerge(MasterProcedureEnv env) throws IOException {<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> // At this point we should check if region was actually closed. If it was not closed then we<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> // don't need to repoen the region and we can just change the regionNode state to OPEN.<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> // if it is alredy closed then we need to do a reopen of region<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> List<RegionInfo> toAssign = new ArrayList<>();<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> for (RegionInfo rinfo : regionsToMerge) {<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> RegionStateNode regionStateNode =<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(rinfo);<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> if (regionStateNode.getState() != State.MERGING) {<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> // same as before HBASE-28405<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> toAssign.add(rinfo);<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> }<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> }<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> AssignmentManagerUtil.reopenRegionsForRollback(env, toAssign, getRegionReplication(env),<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> getServerName(env));<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> }<a name="line.670"></a> |
| <span class="sourceLineNo">671</span><a name="line.671"></a> |
| <span class="sourceLineNo">672</span> private TransitRegionStateProcedure[] createUnassignProcedures(MasterProcedureEnv env)<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> throws IOException {<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> return AssignmentManagerUtil.createUnassignProceduresForSplitOrMerge(env,<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> Stream.of(regionsToMerge), getRegionReplication(env));<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> }<a name="line.676"></a> |
| <span class="sourceLineNo">677</span><a name="line.677"></a> |
| <span class="sourceLineNo">678</span> private TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env)<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> throws IOException {<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> return AssignmentManagerUtil.createAssignProceduresForOpeningNewRegions(env,<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> Collections.singletonList(mergedRegion), getRegionReplication(env), getServerName(env));<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> }<a name="line.682"></a> |
| <span class="sourceLineNo">683</span><a name="line.683"></a> |
| <span class="sourceLineNo">684</span> private int getRegionReplication(final MasterProcedureEnv env) throws IOException {<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> return env.getMasterServices().getTableDescriptors().get(getTableName()).getRegionReplication();<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> }<a name="line.686"></a> |
| <span class="sourceLineNo">687</span><a name="line.687"></a> |
| <span class="sourceLineNo">688</span> /**<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> * Post merge region action<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> * @param env MasterProcedureEnv<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> **/<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> private void preMergeRegionsCommit(final MasterProcedureEnv env) throws IOException {<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> if (cpHost != null) {<a name="line.694"></a> |
| <span class="sourceLineNo">695</span> @MetaMutationAnnotation<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> final List<Mutation> metaEntries = new ArrayList<>();<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> cpHost.preMergeRegionsCommit(regionsToMerge, metaEntries, getUser());<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> try {<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> for (Mutation p : metaEntries) {<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> RegionInfo.parseRegionName(p.getRow());<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> }<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> } catch (IOException e) {<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> LOG.error("Row key of mutation from coprocessor is not parsable as region name. "<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> + "Mutations from coprocessor should only be for hbase:meta table.", e);<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> throw e;<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> }<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> }<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> }<a name="line.708"></a> |
| <span class="sourceLineNo">709</span><a name="line.709"></a> |
| <span class="sourceLineNo">710</span> /**<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> * Add merged region to META and delete original regions.<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> */<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> private void updateMetaForMergedRegions(final MasterProcedureEnv env) throws IOException {<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> env.getAssignmentManager().markRegionAsMerged(mergedRegion, getServerName(env),<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> this.regionsToMerge);<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> }<a name="line.716"></a> |
| <span class="sourceLineNo">717</span><a name="line.717"></a> |
| <span class="sourceLineNo">718</span> /**<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> * Post merge region action<a name="line.719"></a> |
| <span class="sourceLineNo">720</span> * @param env MasterProcedureEnv<a name="line.720"></a> |
| <span class="sourceLineNo">721</span> **/<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> private void postMergeRegionsCommit(final MasterProcedureEnv env) throws IOException {<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> if (cpHost != null) {<a name="line.724"></a> |
| <span class="sourceLineNo">725</span> cpHost.postMergeRegionsCommit(regionsToMerge, mergedRegion, getUser());<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> }<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> }<a name="line.727"></a> |
| <span class="sourceLineNo">728</span><a name="line.728"></a> |
| <span class="sourceLineNo">729</span> /**<a name="line.729"></a> |
| <span class="sourceLineNo">730</span> * Post merge region action<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> * @param env MasterProcedureEnv<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> **/<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> private void postCompletedMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.733"></a> |
| <span class="sourceLineNo">734</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> if (cpHost != null) {<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> cpHost.postCompletedMergeRegionsAction(regionsToMerge, mergedRegion, getUser());<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> }<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> }<a name="line.738"></a> |
| <span class="sourceLineNo">739</span><a name="line.739"></a> |
| <span class="sourceLineNo">740</span> /**<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> * The procedure could be restarted from a different machine. If the variable is null, we need to<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> * retrieve it.<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> * @param env MasterProcedureEnv<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> */<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> private ServerName getServerName(final MasterProcedureEnv env) {<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> if (regionLocation == null) {<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> regionLocation =<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> env.getAssignmentManager().getRegionStates().getRegionServerOfRegion(regionsToMerge[0]);<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> // May still be null here but return null and let caller deal.<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> // Means we lost the in-memory-only location. We are in recovery<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> // or so. The caller should be able to deal w/ a null ServerName.<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> // Let them go to the Balancer to find one to use instead.<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> }<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> return regionLocation;<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> }<a name="line.755"></a> |
| <span class="sourceLineNo">756</span><a name="line.756"></a> |
| <span class="sourceLineNo">757</span> private void writeMaxSequenceIdFile(MasterProcedureEnv env) throws IOException {<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> MasterFileSystem fs = env.getMasterFileSystem();<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> long maxSequenceId = -1L;<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> for (RegionInfo region : regionsToMerge) {<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> maxSequenceId =<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> Math.max(maxSequenceId, WALSplitUtil.getMaxRegionSequenceId(env.getMasterConfiguration(),<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> region, fs::getFileSystem, fs::getWALFileSystem));<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> }<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> if (maxSequenceId > 0) {<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> WALSplitUtil.writeRegionSequenceIdFile(fs.getWALFileSystem(),<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> getWALRegionDir(env, mergedRegion), maxSequenceId);<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> }<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> }<a name="line.769"></a> |
| <span class="sourceLineNo">770</span><a name="line.770"></a> |
| <span class="sourceLineNo">771</span> /** Returns The merged region. Maybe be null if called to early or we failed. */<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> RegionInfo getMergedRegion() {<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> return this.mergedRegion;<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> }<a name="line.774"></a> |
| <span class="sourceLineNo">775</span><a name="line.775"></a> |
| <span class="sourceLineNo">776</span> @Override<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> protected boolean abort(MasterProcedureEnv env) {<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> // Abort means rollback. We can't rollback all steps. HBASE-18018 added abort to all<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> // Procedures. Here is a Procedure that has a PONR and cannot be aborted once it enters this<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> // range of steps; what do we do for these should an operator want to cancel them? HBASE-20022.<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> return isRollbackSupported(getCurrentState()) && super.abort(env);<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> }<a name="line.782"></a> |
| <span class="sourceLineNo">783</span>}<a name="line.783"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
