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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.procedure;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.PROGRESSIVE_BATCH_BACKOFF_MILLIS_DEFAULT;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.PROGRESSIVE_BATCH_BACKOFF_MILLIS_KEY;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.PROGRESSIVE_BATCH_SIZE_MAX_DISABLED;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.PROGRESSIVE_BATCH_SIZE_MAX_KEY;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Arrays;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Collections;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.HashSet;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Set;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.function.Supplier;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.stream.Collectors;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.stream.IntStream;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.ConcurrentTableModificationException;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.TableName;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.TableNotFoundException;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.fs.ErasureCodingUtils;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.zksyncer.MetaLocationSyncer;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerValidationUtils;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.rsgroup.RSGroupInfo;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.slf4j.Logger;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.slf4j.LoggerFactory;<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyTableState;<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>@InterfaceAudience.Private<a name="line.60"></a>
<span class="sourceLineNo">061</span>public class ModifyTableProcedure extends AbstractStateMachineTableProcedure&lt;ModifyTableState&gt; {<a name="line.61"></a>
<span class="sourceLineNo">062</span> private static final Logger LOG = LoggerFactory.getLogger(ModifyTableProcedure.class);<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span> private TableDescriptor unmodifiedTableDescriptor = null;<a name="line.64"></a>
<span class="sourceLineNo">065</span> private TableDescriptor modifiedTableDescriptor;<a name="line.65"></a>
<span class="sourceLineNo">066</span> private boolean deleteColumnFamilyInModify;<a name="line.66"></a>
<span class="sourceLineNo">067</span> private boolean shouldCheckDescriptor;<a name="line.67"></a>
<span class="sourceLineNo">068</span> private boolean reopenRegions;<a name="line.68"></a>
<span class="sourceLineNo">069</span> /**<a name="line.69"></a>
<span class="sourceLineNo">070</span> * List of column families that cannot be deleted from the hbase:meta table. They are critical to<a name="line.70"></a>
<span class="sourceLineNo">071</span> * cluster operation. This is a bit of an odd place to keep this list but then this is the tooling<a name="line.71"></a>
<span class="sourceLineNo">072</span> * that does add/remove. Keeping it local!<a name="line.72"></a>
<span class="sourceLineNo">073</span> */<a name="line.73"></a>
<span class="sourceLineNo">074</span> private static final List&lt;byte[]&gt; UNDELETABLE_META_COLUMNFAMILIES =<a name="line.74"></a>
<span class="sourceLineNo">075</span> Collections.unmodifiableList(Arrays.asList(HConstants.CATALOG_FAMILY, HConstants.TABLE_FAMILY,<a name="line.75"></a>
<span class="sourceLineNo">076</span> HConstants.REPLICATION_BARRIER_FAMILY, HConstants.NAMESPACE_FAMILY));<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> public ModifyTableProcedure() {<a name="line.78"></a>
<span class="sourceLineNo">079</span> super();<a name="line.79"></a>
<span class="sourceLineNo">080</span> initialize(null, false);<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> public ModifyTableProcedure(final MasterProcedureEnv env, final TableDescriptor htd)<a name="line.83"></a>
<span class="sourceLineNo">084</span> throws HBaseIOException {<a name="line.84"></a>
<span class="sourceLineNo">085</span> this(env, htd, null);<a name="line.85"></a>
<span class="sourceLineNo">086</span> }<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span> public ModifyTableProcedure(final MasterProcedureEnv env, final TableDescriptor htd,<a name="line.88"></a>
<span class="sourceLineNo">089</span> final ProcedurePrepareLatch latch) throws HBaseIOException {<a name="line.89"></a>
<span class="sourceLineNo">090</span> this(env, htd, latch, null, false, true);<a name="line.90"></a>
<span class="sourceLineNo">091</span> }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> public ModifyTableProcedure(final MasterProcedureEnv env,<a name="line.93"></a>
<span class="sourceLineNo">094</span> final TableDescriptor newTableDescriptor, final ProcedurePrepareLatch latch,<a name="line.94"></a>
<span class="sourceLineNo">095</span> final TableDescriptor oldTableDescriptor, final boolean shouldCheckDescriptor,<a name="line.95"></a>
<span class="sourceLineNo">096</span> final boolean reopenRegions) throws HBaseIOException {<a name="line.96"></a>
<span class="sourceLineNo">097</span> super(env, latch);<a name="line.97"></a>
<span class="sourceLineNo">098</span> this.reopenRegions = reopenRegions;<a name="line.98"></a>
<span class="sourceLineNo">099</span> initialize(oldTableDescriptor, shouldCheckDescriptor);<a name="line.99"></a>
<span class="sourceLineNo">100</span> this.modifiedTableDescriptor = newTableDescriptor;<a name="line.100"></a>
<span class="sourceLineNo">101</span> preflightChecks(env, null/* No table checks; if changing peers, table can be online */);<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span> protected void preflightChecks(MasterProcedureEnv env, Boolean enabled) throws HBaseIOException {<a name="line.105"></a>
<span class="sourceLineNo">106</span> super.preflightChecks(env, enabled);<a name="line.106"></a>
<span class="sourceLineNo">107</span> if (this.modifiedTableDescriptor.isMetaTable()) {<a name="line.107"></a>
<span class="sourceLineNo">108</span> // If we are modifying the hbase:meta table, make sure we are not deleting critical<a name="line.108"></a>
<span class="sourceLineNo">109</span> // column families else we'll damage the cluster.<a name="line.109"></a>
<span class="sourceLineNo">110</span> Set&lt;byte[]&gt; cfs = this.modifiedTableDescriptor.getColumnFamilyNames();<a name="line.110"></a>
<span class="sourceLineNo">111</span> for (byte[] family : UNDELETABLE_META_COLUMNFAMILIES) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> if (!cfs.contains(family)) {<a name="line.112"></a>
<span class="sourceLineNo">113</span> throw new HBaseIOException(<a name="line.113"></a>
<span class="sourceLineNo">114</span> "Delete of hbase:meta column family " + Bytes.toString(family));<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span> }<a name="line.116"></a>
<span class="sourceLineNo">117</span> }<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span> if (!reopenRegions) {<a name="line.119"></a>
<span class="sourceLineNo">120</span> if (this.unmodifiedTableDescriptor == null) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> throw new HBaseIOException(<a name="line.121"></a>
<span class="sourceLineNo">122</span> "unmodifiedTableDescriptor cannot be null when this table modification won't reopen regions");<a name="line.122"></a>
<span class="sourceLineNo">123</span> }<a name="line.123"></a>
<span class="sourceLineNo">124</span> if (<a name="line.124"></a>
<span class="sourceLineNo">125</span> !this.unmodifiedTableDescriptor.getTableName()<a name="line.125"></a>
<span class="sourceLineNo">126</span> .equals(this.modifiedTableDescriptor.getTableName())<a name="line.126"></a>
<span class="sourceLineNo">127</span> ) {<a name="line.127"></a>
<span class="sourceLineNo">128</span> throw new HBaseIOException(<a name="line.128"></a>
<span class="sourceLineNo">129</span> "Cannot change the table name when this modification won't " + "reopen regions.");<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span> if (<a name="line.131"></a>
<span class="sourceLineNo">132</span> this.unmodifiedTableDescriptor.getColumnFamilyCount()<a name="line.132"></a>
<span class="sourceLineNo">133</span> != this.modifiedTableDescriptor.getColumnFamilyCount()<a name="line.133"></a>
<span class="sourceLineNo">134</span> ) {<a name="line.134"></a>
<span class="sourceLineNo">135</span> throw new HBaseIOException(<a name="line.135"></a>
<span class="sourceLineNo">136</span> "Cannot add or remove column families when this modification " + "won't reopen regions.");<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<a name="line.137"></a>
<span class="sourceLineNo">138</span> if (<a name="line.138"></a>
<span class="sourceLineNo">139</span> this.unmodifiedTableDescriptor.getCoprocessorDescriptors().hashCode()<a name="line.139"></a>
<span class="sourceLineNo">140</span> != this.modifiedTableDescriptor.getCoprocessorDescriptors().hashCode()<a name="line.140"></a>
<span class="sourceLineNo">141</span> ) {<a name="line.141"></a>
<span class="sourceLineNo">142</span> throw new HBaseIOException(<a name="line.142"></a>
<span class="sourceLineNo">143</span> "Can not modify Coprocessor when table modification won't reopen regions");<a name="line.143"></a>
<span class="sourceLineNo">144</span> }<a name="line.144"></a>
<span class="sourceLineNo">145</span> final Set&lt;String&gt; s = new HashSet&lt;&gt;(Arrays.asList(TableDescriptorBuilder.REGION_REPLICATION,<a name="line.145"></a>
<span class="sourceLineNo">146</span> TableDescriptorBuilder.REGION_MEMSTORE_REPLICATION, RSGroupInfo.TABLE_DESC_PROP_GROUP));<a name="line.146"></a>
<span class="sourceLineNo">147</span> for (String k : s) {<a name="line.147"></a>
<span class="sourceLineNo">148</span> if (<a name="line.148"></a>
<span class="sourceLineNo">149</span> isTablePropertyModified(this.unmodifiedTableDescriptor, this.modifiedTableDescriptor, k)<a name="line.149"></a>
<span class="sourceLineNo">150</span> ) {<a name="line.150"></a>
<span class="sourceLineNo">151</span> throw new HBaseIOException(<a name="line.151"></a>
<span class="sourceLineNo">152</span> "Can not modify " + k + " of a table when modification won't reopen regions");<a name="line.152"></a>
<span class="sourceLineNo">153</span> }<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span> }<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> /**<a name="line.158"></a>
<span class="sourceLineNo">159</span> * Comparing the value associated with a given key across two TableDescriptor instances'<a name="line.159"></a>
<span class="sourceLineNo">160</span> * properties.<a name="line.160"></a>
<span class="sourceLineNo">161</span> * @return True if the table property &lt;code&gt;key&lt;/code&gt; is the same in both.<a name="line.161"></a>
<span class="sourceLineNo">162</span> */<a name="line.162"></a>
<span class="sourceLineNo">163</span> private boolean isTablePropertyModified(TableDescriptor oldDescriptor,<a name="line.163"></a>
<span class="sourceLineNo">164</span> TableDescriptor newDescriptor, String key) {<a name="line.164"></a>
<span class="sourceLineNo">165</span> String oldV = oldDescriptor.getValue(key);<a name="line.165"></a>
<span class="sourceLineNo">166</span> String newV = newDescriptor.getValue(key);<a name="line.166"></a>
<span class="sourceLineNo">167</span> if (oldV == null &amp;&amp; newV == null) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> return false;<a name="line.168"></a>
<span class="sourceLineNo">169</span> } else if (oldV != null &amp;&amp; newV != null &amp;&amp; oldV.equals(newV)) {<a name="line.169"></a>
<span class="sourceLineNo">170</span> return false;<a name="line.170"></a>
<span class="sourceLineNo">171</span> }<a name="line.171"></a>
<span class="sourceLineNo">172</span> return true;<a name="line.172"></a>
<span class="sourceLineNo">173</span> }<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span> private void initialize(final TableDescriptor unmodifiedTableDescriptor,<a name="line.175"></a>
<span class="sourceLineNo">176</span> final boolean shouldCheckDescriptor) {<a name="line.176"></a>
<span class="sourceLineNo">177</span> this.unmodifiedTableDescriptor = unmodifiedTableDescriptor;<a name="line.177"></a>
<span class="sourceLineNo">178</span> this.shouldCheckDescriptor = shouldCheckDescriptor;<a name="line.178"></a>
<span class="sourceLineNo">179</span> this.deleteColumnFamilyInModify = false;<a name="line.179"></a>
<span class="sourceLineNo">180</span> }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span> @Override<a name="line.182"></a>
<span class="sourceLineNo">183</span> protected Flow executeFromState(final MasterProcedureEnv env, final ModifyTableState state)<a name="line.183"></a>
<span class="sourceLineNo">184</span> throws InterruptedException {<a name="line.184"></a>
<span class="sourceLineNo">185</span> LOG.trace("{} execute state={}", this, state);<a name="line.185"></a>
<span class="sourceLineNo">186</span> try {<a name="line.186"></a>
<span class="sourceLineNo">187</span> switch (state) {<a name="line.187"></a>
<span class="sourceLineNo">188</span> case MODIFY_TABLE_PREPARE:<a name="line.188"></a>
<span class="sourceLineNo">189</span> prepareModify(env);<a name="line.189"></a>
<span class="sourceLineNo">190</span> setNextState(ModifyTableState.MODIFY_TABLE_PRE_OPERATION);<a name="line.190"></a>
<span class="sourceLineNo">191</span> break;<a name="line.191"></a>
<span class="sourceLineNo">192</span> case MODIFY_TABLE_PRE_OPERATION:<a name="line.192"></a>
<span class="sourceLineNo">193</span> preModify(env, state);<a name="line.193"></a>
<span class="sourceLineNo">194</span> // We cannot allow changes to region replicas when 'reopenRegions==false',<a name="line.194"></a>
<span class="sourceLineNo">195</span> // as this mode bypasses the state management required for modifying region replicas.<a name="line.195"></a>
<span class="sourceLineNo">196</span> if (reopenRegions) {<a name="line.196"></a>
<span class="sourceLineNo">197</span> setNextState(ModifyTableState.MODIFY_TABLE_CLOSE_EXCESS_REPLICAS);<a name="line.197"></a>
<span class="sourceLineNo">198</span> } else {<a name="line.198"></a>
<span class="sourceLineNo">199</span> setNextState(ModifyTableState.MODIFY_TABLE_UPDATE_TABLE_DESCRIPTOR);<a name="line.199"></a>
<span class="sourceLineNo">200</span> }<a name="line.200"></a>
<span class="sourceLineNo">201</span> break;<a name="line.201"></a>
<span class="sourceLineNo">202</span> case MODIFY_TABLE_CLOSE_EXCESS_REPLICAS:<a name="line.202"></a>
<span class="sourceLineNo">203</span> if (isTableEnabled(env)) {<a name="line.203"></a>
<span class="sourceLineNo">204</span> closeExcessReplicasIfNeeded(env);<a name="line.204"></a>
<span class="sourceLineNo">205</span> }<a name="line.205"></a>
<span class="sourceLineNo">206</span> setNextState(ModifyTableState.MODIFY_TABLE_UPDATE_TABLE_DESCRIPTOR);<a name="line.206"></a>
<span class="sourceLineNo">207</span> break;<a name="line.207"></a>
<span class="sourceLineNo">208</span> case MODIFY_TABLE_UPDATE_TABLE_DESCRIPTOR:<a name="line.208"></a>
<span class="sourceLineNo">209</span> updateTableDescriptor(env);<a name="line.209"></a>
<span class="sourceLineNo">210</span> if (reopenRegions) {<a name="line.210"></a>
<span class="sourceLineNo">211</span> setNextState(ModifyTableState.MODIFY_TABLE_REMOVE_REPLICA_COLUMN);<a name="line.211"></a>
<span class="sourceLineNo">212</span> } else {<a name="line.212"></a>
<span class="sourceLineNo">213</span> setNextState(ModifyTableState.MODIFY_TABLE_POST_OPERATION);<a name="line.213"></a>
<span class="sourceLineNo">214</span> }<a name="line.214"></a>
<span class="sourceLineNo">215</span> break;<a name="line.215"></a>
<span class="sourceLineNo">216</span> case MODIFY_TABLE_REMOVE_REPLICA_COLUMN:<a name="line.216"></a>
<span class="sourceLineNo">217</span> removeReplicaColumnsIfNeeded(env);<a name="line.217"></a>
<span class="sourceLineNo">218</span> setNextState(ModifyTableState.MODIFY_TABLE_POST_OPERATION);<a name="line.218"></a>
<span class="sourceLineNo">219</span> break;<a name="line.219"></a>
<span class="sourceLineNo">220</span> case MODIFY_TABLE_POST_OPERATION:<a name="line.220"></a>
<span class="sourceLineNo">221</span> postModify(env, state);<a name="line.221"></a>
<span class="sourceLineNo">222</span> if (reopenRegions) {<a name="line.222"></a>
<span class="sourceLineNo">223</span> setNextState(ModifyTableState.MODIFY_TABLE_REOPEN_ALL_REGIONS);<a name="line.223"></a>
<span class="sourceLineNo">224</span> } else<a name="line.224"></a>
<span class="sourceLineNo">225</span> if (ErasureCodingUtils.needsSync(unmodifiedTableDescriptor, modifiedTableDescriptor)) {<a name="line.225"></a>
<span class="sourceLineNo">226</span> setNextState(ModifyTableState.MODIFY_TABLE_SYNC_ERASURE_CODING_POLICY);<a name="line.226"></a>
<span class="sourceLineNo">227</span> } else {<a name="line.227"></a>
<span class="sourceLineNo">228</span> return Flow.NO_MORE_STATE;<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
<span class="sourceLineNo">230</span> break;<a name="line.230"></a>
<span class="sourceLineNo">231</span> case MODIFY_TABLE_REOPEN_ALL_REGIONS:<a name="line.231"></a>
<span class="sourceLineNo">232</span> if (isTableEnabled(env)) {<a name="line.232"></a>
<span class="sourceLineNo">233</span> Configuration conf = env.getMasterConfiguration();<a name="line.233"></a>
<span class="sourceLineNo">234</span> long backoffMillis = conf.getLong(PROGRESSIVE_BATCH_BACKOFF_MILLIS_KEY,<a name="line.234"></a>
<span class="sourceLineNo">235</span> PROGRESSIVE_BATCH_BACKOFF_MILLIS_DEFAULT);<a name="line.235"></a>
<span class="sourceLineNo">236</span> int batchSizeMax =<a name="line.236"></a>
<span class="sourceLineNo">237</span> conf.getInt(PROGRESSIVE_BATCH_SIZE_MAX_KEY, PROGRESSIVE_BATCH_SIZE_MAX_DISABLED);<a name="line.237"></a>
<span class="sourceLineNo">238</span> addChildProcedure(<a name="line.238"></a>
<span class="sourceLineNo">239</span> new ReopenTableRegionsProcedure(getTableName(), backoffMillis, batchSizeMax));<a name="line.239"></a>
<span class="sourceLineNo">240</span> }<a name="line.240"></a>
<span class="sourceLineNo">241</span> setNextState(ModifyTableState.MODIFY_TABLE_ASSIGN_NEW_REPLICAS);<a name="line.241"></a>
<span class="sourceLineNo">242</span> break;<a name="line.242"></a>
<span class="sourceLineNo">243</span> case MODIFY_TABLE_ASSIGN_NEW_REPLICAS:<a name="line.243"></a>
<span class="sourceLineNo">244</span> assignNewReplicasIfNeeded(env);<a name="line.244"></a>
<span class="sourceLineNo">245</span> if (TableName.isMetaTableName(getTableName())) {<a name="line.245"></a>
<span class="sourceLineNo">246</span> MetaLocationSyncer syncer = env.getMasterServices().getMetaLocationSyncer();<a name="line.246"></a>
<span class="sourceLineNo">247</span> if (syncer != null) {<a name="line.247"></a>
<span class="sourceLineNo">248</span> syncer.setMetaReplicaCount(modifiedTableDescriptor.getRegionReplication());<a name="line.248"></a>
<span class="sourceLineNo">249</span> }<a name="line.249"></a>
<span class="sourceLineNo">250</span> }<a name="line.250"></a>
<span class="sourceLineNo">251</span> if (deleteColumnFamilyInModify) {<a name="line.251"></a>
<span class="sourceLineNo">252</span> setNextState(ModifyTableState.MODIFY_TABLE_DELETE_FS_LAYOUT);<a name="line.252"></a>
<span class="sourceLineNo">253</span> } else<a name="line.253"></a>
<span class="sourceLineNo">254</span> if (ErasureCodingUtils.needsSync(unmodifiedTableDescriptor, modifiedTableDescriptor)) {<a name="line.254"></a>
<span class="sourceLineNo">255</span> setNextState(ModifyTableState.MODIFY_TABLE_SYNC_ERASURE_CODING_POLICY);<a name="line.255"></a>
<span class="sourceLineNo">256</span> } else {<a name="line.256"></a>
<span class="sourceLineNo">257</span> return Flow.NO_MORE_STATE;<a name="line.257"></a>
<span class="sourceLineNo">258</span> }<a name="line.258"></a>
<span class="sourceLineNo">259</span> break;<a name="line.259"></a>
<span class="sourceLineNo">260</span> case MODIFY_TABLE_DELETE_FS_LAYOUT:<a name="line.260"></a>
<span class="sourceLineNo">261</span> deleteFromFs(env, unmodifiedTableDescriptor, modifiedTableDescriptor);<a name="line.261"></a>
<span class="sourceLineNo">262</span> if (ErasureCodingUtils.needsSync(unmodifiedTableDescriptor, modifiedTableDescriptor)) {<a name="line.262"></a>
<span class="sourceLineNo">263</span> setNextState(ModifyTableState.MODIFY_TABLE_SYNC_ERASURE_CODING_POLICY);<a name="line.263"></a>
<span class="sourceLineNo">264</span> break;<a name="line.264"></a>
<span class="sourceLineNo">265</span> } else {<a name="line.265"></a>
<span class="sourceLineNo">266</span> return Flow.NO_MORE_STATE;<a name="line.266"></a>
<span class="sourceLineNo">267</span> }<a name="line.267"></a>
<span class="sourceLineNo">268</span> case MODIFY_TABLE_SYNC_ERASURE_CODING_POLICY:<a name="line.268"></a>
<span class="sourceLineNo">269</span> ErasureCodingUtils.sync(env.getMasterFileSystem().getFileSystem(),<a name="line.269"></a>
<span class="sourceLineNo">270</span> env.getMasterFileSystem().getRootDir(), modifiedTableDescriptor);<a name="line.270"></a>
<span class="sourceLineNo">271</span> return Flow.NO_MORE_STATE;<a name="line.271"></a>
<span class="sourceLineNo">272</span> default:<a name="line.272"></a>
<span class="sourceLineNo">273</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.273"></a>
<span class="sourceLineNo">274</span> }<a name="line.274"></a>
<span class="sourceLineNo">275</span> } catch (IOException e) {<a name="line.275"></a>
<span class="sourceLineNo">276</span> if (isRollbackSupported(state)) {<a name="line.276"></a>
<span class="sourceLineNo">277</span> setFailure("master-modify-table", e);<a name="line.277"></a>
<span class="sourceLineNo">278</span> } else {<a name="line.278"></a>
<span class="sourceLineNo">279</span> LOG.warn("Retriable error trying to modify table={} (in state={})", getTableName(), state,<a name="line.279"></a>
<span class="sourceLineNo">280</span> e);<a name="line.280"></a>
<span class="sourceLineNo">281</span> }<a name="line.281"></a>
<span class="sourceLineNo">282</span> }<a name="line.282"></a>
<span class="sourceLineNo">283</span> return Flow.HAS_MORE_STATE;<a name="line.283"></a>
<span class="sourceLineNo">284</span> }<a name="line.284"></a>
<span class="sourceLineNo">285</span><a name="line.285"></a>
<span class="sourceLineNo">286</span> @Override<a name="line.286"></a>
<span class="sourceLineNo">287</span> protected void rollbackState(final MasterProcedureEnv env, final ModifyTableState state)<a name="line.287"></a>
<span class="sourceLineNo">288</span> throws IOException {<a name="line.288"></a>
<span class="sourceLineNo">289</span> if (<a name="line.289"></a>
<span class="sourceLineNo">290</span> state == ModifyTableState.MODIFY_TABLE_PREPARE<a name="line.290"></a>
<span class="sourceLineNo">291</span> || state == ModifyTableState.MODIFY_TABLE_PRE_OPERATION<a name="line.291"></a>
<span class="sourceLineNo">292</span> ) {<a name="line.292"></a>
<span class="sourceLineNo">293</span> // nothing to rollback, pre-modify is just checks.<a name="line.293"></a>
<span class="sourceLineNo">294</span> // TODO: coprocessor rollback semantic is still undefined.<a name="line.294"></a>
<span class="sourceLineNo">295</span> return;<a name="line.295"></a>
<span class="sourceLineNo">296</span> }<a name="line.296"></a>
<span class="sourceLineNo">297</span><a name="line.297"></a>
<span class="sourceLineNo">298</span> // The delete doesn't have a rollback. The execution will succeed, at some point.<a name="line.298"></a>
<span class="sourceLineNo">299</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.299"></a>
<span class="sourceLineNo">300</span> }<a name="line.300"></a>
<span class="sourceLineNo">301</span><a name="line.301"></a>
<span class="sourceLineNo">302</span> @Override<a name="line.302"></a>
<span class="sourceLineNo">303</span> protected boolean isRollbackSupported(final ModifyTableState state) {<a name="line.303"></a>
<span class="sourceLineNo">304</span> switch (state) {<a name="line.304"></a>
<span class="sourceLineNo">305</span> case MODIFY_TABLE_PRE_OPERATION:<a name="line.305"></a>
<span class="sourceLineNo">306</span> case MODIFY_TABLE_PREPARE:<a name="line.306"></a>
<span class="sourceLineNo">307</span> return true;<a name="line.307"></a>
<span class="sourceLineNo">308</span> default:<a name="line.308"></a>
<span class="sourceLineNo">309</span> return false;<a name="line.309"></a>
<span class="sourceLineNo">310</span> }<a name="line.310"></a>
<span class="sourceLineNo">311</span> }<a name="line.311"></a>
<span class="sourceLineNo">312</span><a name="line.312"></a>
<span class="sourceLineNo">313</span> @Override<a name="line.313"></a>
<span class="sourceLineNo">314</span> protected void completionCleanup(final MasterProcedureEnv env) {<a name="line.314"></a>
<span class="sourceLineNo">315</span> releaseSyncLatch();<a name="line.315"></a>
<span class="sourceLineNo">316</span> }<a name="line.316"></a>
<span class="sourceLineNo">317</span><a name="line.317"></a>
<span class="sourceLineNo">318</span> @Override<a name="line.318"></a>
<span class="sourceLineNo">319</span> protected ModifyTableState getState(final int stateId) {<a name="line.319"></a>
<span class="sourceLineNo">320</span> return ModifyTableState.forNumber(stateId);<a name="line.320"></a>
<span class="sourceLineNo">321</span> }<a name="line.321"></a>
<span class="sourceLineNo">322</span><a name="line.322"></a>
<span class="sourceLineNo">323</span> @Override<a name="line.323"></a>
<span class="sourceLineNo">324</span> protected int getStateId(final ModifyTableState state) {<a name="line.324"></a>
<span class="sourceLineNo">325</span> return state.getNumber();<a name="line.325"></a>
<span class="sourceLineNo">326</span> }<a name="line.326"></a>
<span class="sourceLineNo">327</span><a name="line.327"></a>
<span class="sourceLineNo">328</span> @Override<a name="line.328"></a>
<span class="sourceLineNo">329</span> protected ModifyTableState getInitialState() {<a name="line.329"></a>
<span class="sourceLineNo">330</span> return ModifyTableState.MODIFY_TABLE_PREPARE;<a name="line.330"></a>
<span class="sourceLineNo">331</span> }<a name="line.331"></a>
<span class="sourceLineNo">332</span><a name="line.332"></a>
<span class="sourceLineNo">333</span> @Override<a name="line.333"></a>
<span class="sourceLineNo">334</span> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.334"></a>
<span class="sourceLineNo">335</span> super.serializeStateData(serializer);<a name="line.335"></a>
<span class="sourceLineNo">336</span><a name="line.336"></a>
<span class="sourceLineNo">337</span> MasterProcedureProtos.ModifyTableStateData.Builder modifyTableMsg =<a name="line.337"></a>
<span class="sourceLineNo">338</span> MasterProcedureProtos.ModifyTableStateData.newBuilder()<a name="line.338"></a>
<span class="sourceLineNo">339</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.339"></a>
<span class="sourceLineNo">340</span> .setModifiedTableSchema(ProtobufUtil.toTableSchema(modifiedTableDescriptor))<a name="line.340"></a>
<span class="sourceLineNo">341</span> .setDeleteColumnFamilyInModify(deleteColumnFamilyInModify)<a name="line.341"></a>
<span class="sourceLineNo">342</span> .setShouldCheckDescriptor(shouldCheckDescriptor).setReopenRegions(reopenRegions);<a name="line.342"></a>
<span class="sourceLineNo">343</span><a name="line.343"></a>
<span class="sourceLineNo">344</span> if (unmodifiedTableDescriptor != null) {<a name="line.344"></a>
<span class="sourceLineNo">345</span> modifyTableMsg<a name="line.345"></a>
<span class="sourceLineNo">346</span> .setUnmodifiedTableSchema(ProtobufUtil.toTableSchema(unmodifiedTableDescriptor));<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> serializer.serialize(modifyTableMsg.build());<a name="line.349"></a>
<span class="sourceLineNo">350</span> }<a name="line.350"></a>
<span class="sourceLineNo">351</span><a name="line.351"></a>
<span class="sourceLineNo">352</span> @Override<a name="line.352"></a>
<span class="sourceLineNo">353</span> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {<a name="line.353"></a>
<span class="sourceLineNo">354</span> super.deserializeStateData(serializer);<a name="line.354"></a>
<span class="sourceLineNo">355</span><a name="line.355"></a>
<span class="sourceLineNo">356</span> MasterProcedureProtos.ModifyTableStateData modifyTableMsg =<a name="line.356"></a>
<span class="sourceLineNo">357</span> serializer.deserialize(MasterProcedureProtos.ModifyTableStateData.class);<a name="line.357"></a>
<span class="sourceLineNo">358</span> setUser(MasterProcedureUtil.toUserInfo(modifyTableMsg.getUserInfo()));<a name="line.358"></a>
<span class="sourceLineNo">359</span> modifiedTableDescriptor =<a name="line.359"></a>
<span class="sourceLineNo">360</span> ProtobufUtil.toTableDescriptor(modifyTableMsg.getModifiedTableSchema());<a name="line.360"></a>
<span class="sourceLineNo">361</span> deleteColumnFamilyInModify = modifyTableMsg.getDeleteColumnFamilyInModify();<a name="line.361"></a>
<span class="sourceLineNo">362</span> shouldCheckDescriptor =<a name="line.362"></a>
<span class="sourceLineNo">363</span> modifyTableMsg.hasShouldCheckDescriptor() ? modifyTableMsg.getShouldCheckDescriptor() : false;<a name="line.363"></a>
<span class="sourceLineNo">364</span> reopenRegions = modifyTableMsg.hasReopenRegions() ? modifyTableMsg.getReopenRegions() : true;<a name="line.364"></a>
<span class="sourceLineNo">365</span><a name="line.365"></a>
<span class="sourceLineNo">366</span> if (modifyTableMsg.hasUnmodifiedTableSchema()) {<a name="line.366"></a>
<span class="sourceLineNo">367</span> unmodifiedTableDescriptor =<a name="line.367"></a>
<span class="sourceLineNo">368</span> ProtobufUtil.toTableDescriptor(modifyTableMsg.getUnmodifiedTableSchema());<a name="line.368"></a>
<span class="sourceLineNo">369</span> }<a name="line.369"></a>
<span class="sourceLineNo">370</span> }<a name="line.370"></a>
<span class="sourceLineNo">371</span><a name="line.371"></a>
<span class="sourceLineNo">372</span> @Override<a name="line.372"></a>
<span class="sourceLineNo">373</span> public TableName getTableName() {<a name="line.373"></a>
<span class="sourceLineNo">374</span> return modifiedTableDescriptor.getTableName();<a name="line.374"></a>
<span class="sourceLineNo">375</span> }<a name="line.375"></a>
<span class="sourceLineNo">376</span><a name="line.376"></a>
<span class="sourceLineNo">377</span> @Override<a name="line.377"></a>
<span class="sourceLineNo">378</span> public TableOperationType getTableOperationType() {<a name="line.378"></a>
<span class="sourceLineNo">379</span> return TableOperationType.EDIT;<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> /**<a name="line.382"></a>
<span class="sourceLineNo">383</span> * Check conditions before any real action of modifying a table.<a name="line.383"></a>
<span class="sourceLineNo">384</span> */<a name="line.384"></a>
<span class="sourceLineNo">385</span> private void prepareModify(final MasterProcedureEnv env) throws IOException {<a name="line.385"></a>
<span class="sourceLineNo">386</span> // Checks whether the table exists<a name="line.386"></a>
<span class="sourceLineNo">387</span> if (!env.getMasterServices().getTableDescriptors().exists(getTableName())) {<a name="line.387"></a>
<span class="sourceLineNo">388</span> throw new TableNotFoundException(getTableName());<a name="line.388"></a>
<span class="sourceLineNo">389</span> }<a name="line.389"></a>
<span class="sourceLineNo">390</span><a name="line.390"></a>
<span class="sourceLineNo">391</span> // check that we have at least 1 CF<a name="line.391"></a>
<span class="sourceLineNo">392</span> if (modifiedTableDescriptor.getColumnFamilyCount() == 0) {<a name="line.392"></a>
<span class="sourceLineNo">393</span> throw new DoNotRetryIOException(<a name="line.393"></a>
<span class="sourceLineNo">394</span> "Table " + getTableName().toString() + " should have at least one column family.");<a name="line.394"></a>
<span class="sourceLineNo">395</span> }<a name="line.395"></a>
<span class="sourceLineNo">396</span><a name="line.396"></a>
<span class="sourceLineNo">397</span> // If descriptor check is enabled, check whether the table descriptor when procedure was<a name="line.397"></a>
<span class="sourceLineNo">398</span> // submitted matches with the current<a name="line.398"></a>
<span class="sourceLineNo">399</span> // table descriptor of the table, else retrieve the old descriptor<a name="line.399"></a>
<span class="sourceLineNo">400</span> // for comparison in order to update the descriptor.<a name="line.400"></a>
<span class="sourceLineNo">401</span> if (shouldCheckDescriptor) {<a name="line.401"></a>
<span class="sourceLineNo">402</span> if (<a name="line.402"></a>
<span class="sourceLineNo">403</span> TableDescriptor.COMPARATOR.compare(unmodifiedTableDescriptor,<a name="line.403"></a>
<span class="sourceLineNo">404</span> env.getMasterServices().getTableDescriptors().get(getTableName())) != 0<a name="line.404"></a>
<span class="sourceLineNo">405</span> ) {<a name="line.405"></a>
<span class="sourceLineNo">406</span> LOG.error("Error while modifying table '" + getTableName().toString()<a name="line.406"></a>
<span class="sourceLineNo">407</span> + "' Skipping procedure : " + this);<a name="line.407"></a>
<span class="sourceLineNo">408</span> throw new ConcurrentTableModificationException(<a name="line.408"></a>
<span class="sourceLineNo">409</span> "Skipping modify table operation on table '" + getTableName().toString()<a name="line.409"></a>
<span class="sourceLineNo">410</span> + "' as it has already been modified by some other concurrent operation, "<a name="line.410"></a>
<span class="sourceLineNo">411</span> + "Please retry.");<a name="line.411"></a>
<span class="sourceLineNo">412</span> }<a name="line.412"></a>
<span class="sourceLineNo">413</span> } else {<a name="line.413"></a>
<span class="sourceLineNo">414</span> this.unmodifiedTableDescriptor =<a name="line.414"></a>
<span class="sourceLineNo">415</span> env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.415"></a>
<span class="sourceLineNo">416</span> }<a name="line.416"></a>
<span class="sourceLineNo">417</span><a name="line.417"></a>
<span class="sourceLineNo">418</span> this.deleteColumnFamilyInModify =<a name="line.418"></a>
<span class="sourceLineNo">419</span> isDeleteColumnFamily(unmodifiedTableDescriptor, modifiedTableDescriptor);<a name="line.419"></a>
<span class="sourceLineNo">420</span> if (<a name="line.420"></a>
<span class="sourceLineNo">421</span> !unmodifiedTableDescriptor.getRegionServerGroup()<a name="line.421"></a>
<span class="sourceLineNo">422</span> .equals(modifiedTableDescriptor.getRegionServerGroup())<a name="line.422"></a>
<span class="sourceLineNo">423</span> ) {<a name="line.423"></a>
<span class="sourceLineNo">424</span> Supplier&lt;String&gt; forWhom = () -&gt; "table " + getTableName();<a name="line.424"></a>
<span class="sourceLineNo">425</span> RSGroupInfo rsGroupInfo = MasterProcedureUtil.checkGroupExists(<a name="line.425"></a>
<span class="sourceLineNo">426</span> env.getMasterServices().getRSGroupInfoManager()::getRSGroup,<a name="line.426"></a>
<span class="sourceLineNo">427</span> modifiedTableDescriptor.getRegionServerGroup(), forWhom);<a name="line.427"></a>
<span class="sourceLineNo">428</span> MasterProcedureUtil.checkGroupNotEmpty(rsGroupInfo, forWhom);<a name="line.428"></a>
<span class="sourceLineNo">429</span> }<a name="line.429"></a>
<span class="sourceLineNo">430</span><a name="line.430"></a>
<span class="sourceLineNo">431</span> // check for store file tracker configurations<a name="line.431"></a>
<span class="sourceLineNo">432</span> StoreFileTrackerValidationUtils.checkForModifyTable(env.getMasterConfiguration(),<a name="line.432"></a>
<span class="sourceLineNo">433</span> unmodifiedTableDescriptor, modifiedTableDescriptor, !isTableEnabled(env));<a name="line.433"></a>
<span class="sourceLineNo">434</span> }<a name="line.434"></a>
<span class="sourceLineNo">435</span><a name="line.435"></a>
<span class="sourceLineNo">436</span> /**<a name="line.436"></a>
<span class="sourceLineNo">437</span> * Find out whether all column families in unmodifiedTableDescriptor also exists in the<a name="line.437"></a>
<span class="sourceLineNo">438</span> * modifiedTableDescriptor.<a name="line.438"></a>
<span class="sourceLineNo">439</span> * @return True if we are deleting a column family.<a name="line.439"></a>
<span class="sourceLineNo">440</span> */<a name="line.440"></a>
<span class="sourceLineNo">441</span> private static boolean isDeleteColumnFamily(TableDescriptor originalDescriptor,<a name="line.441"></a>
<span class="sourceLineNo">442</span> TableDescriptor newDescriptor) {<a name="line.442"></a>
<span class="sourceLineNo">443</span> boolean result = false;<a name="line.443"></a>
<span class="sourceLineNo">444</span> final Set&lt;byte[]&gt; originalFamilies = originalDescriptor.getColumnFamilyNames();<a name="line.444"></a>
<span class="sourceLineNo">445</span> final Set&lt;byte[]&gt; newFamilies = newDescriptor.getColumnFamilyNames();<a name="line.445"></a>
<span class="sourceLineNo">446</span> for (byte[] familyName : originalFamilies) {<a name="line.446"></a>
<span class="sourceLineNo">447</span> if (!newFamilies.contains(familyName)) {<a name="line.447"></a>
<span class="sourceLineNo">448</span> result = true;<a name="line.448"></a>
<span class="sourceLineNo">449</span> break;<a name="line.449"></a>
<span class="sourceLineNo">450</span> }<a name="line.450"></a>
<span class="sourceLineNo">451</span> }<a name="line.451"></a>
<span class="sourceLineNo">452</span> return result;<a name="line.452"></a>
<span class="sourceLineNo">453</span> }<a name="line.453"></a>
<span class="sourceLineNo">454</span><a name="line.454"></a>
<span class="sourceLineNo">455</span> /**<a name="line.455"></a>
<span class="sourceLineNo">456</span> * Action before modifying table.<a name="line.456"></a>
<span class="sourceLineNo">457</span> * @param env MasterProcedureEnv<a name="line.457"></a>
<span class="sourceLineNo">458</span> * @param state the procedure state<a name="line.458"></a>
<span class="sourceLineNo">459</span> */<a name="line.459"></a>
<span class="sourceLineNo">460</span> private void preModify(final MasterProcedureEnv env, final ModifyTableState state)<a name="line.460"></a>
<span class="sourceLineNo">461</span> throws IOException, InterruptedException {<a name="line.461"></a>
<span class="sourceLineNo">462</span> runCoprocessorAction(env, state);<a name="line.462"></a>
<span class="sourceLineNo">463</span> }<a name="line.463"></a>
<span class="sourceLineNo">464</span><a name="line.464"></a>
<span class="sourceLineNo">465</span> /**<a name="line.465"></a>
<span class="sourceLineNo">466</span> * Update descriptor<a name="line.466"></a>
<span class="sourceLineNo">467</span> * @param env MasterProcedureEnv<a name="line.467"></a>
<span class="sourceLineNo">468</span> **/<a name="line.468"></a>
<span class="sourceLineNo">469</span> private void updateTableDescriptor(final MasterProcedureEnv env) throws IOException {<a name="line.469"></a>
<span class="sourceLineNo">470</span> env.getMasterServices().getTableDescriptors().update(modifiedTableDescriptor);<a name="line.470"></a>
<span class="sourceLineNo">471</span> }<a name="line.471"></a>
<span class="sourceLineNo">472</span><a name="line.472"></a>
<span class="sourceLineNo">473</span> /**<a name="line.473"></a>
<span class="sourceLineNo">474</span> * Removes from hdfs the families that are not longer present in the new table descriptor.<a name="line.474"></a>
<span class="sourceLineNo">475</span> * @param env MasterProcedureEnv<a name="line.475"></a>
<span class="sourceLineNo">476</span> */<a name="line.476"></a>
<span class="sourceLineNo">477</span> private void deleteFromFs(final MasterProcedureEnv env, final TableDescriptor oldTableDescriptor,<a name="line.477"></a>
<span class="sourceLineNo">478</span> final TableDescriptor newTableDescriptor) throws IOException {<a name="line.478"></a>
<span class="sourceLineNo">479</span> final Set&lt;byte[]&gt; oldFamilies = oldTableDescriptor.getColumnFamilyNames();<a name="line.479"></a>
<span class="sourceLineNo">480</span> final Set&lt;byte[]&gt; newFamilies = newTableDescriptor.getColumnFamilyNames();<a name="line.480"></a>
<span class="sourceLineNo">481</span> for (byte[] familyName : oldFamilies) {<a name="line.481"></a>
<span class="sourceLineNo">482</span> if (!newFamilies.contains(familyName)) {<a name="line.482"></a>
<span class="sourceLineNo">483</span> MasterDDLOperationHelper.deleteColumnFamilyFromFileSystem(env, getTableName(),<a name="line.483"></a>
<span class="sourceLineNo">484</span> getRegionInfoList(env), familyName,<a name="line.484"></a>
<span class="sourceLineNo">485</span> oldTableDescriptor.getColumnFamily(familyName).isMobEnabled());<a name="line.485"></a>
<span class="sourceLineNo">486</span> }<a name="line.486"></a>
<span class="sourceLineNo">487</span> }<a name="line.487"></a>
<span class="sourceLineNo">488</span> }<a name="line.488"></a>
<span class="sourceLineNo">489</span><a name="line.489"></a>
<span class="sourceLineNo">490</span> /**<a name="line.490"></a>
<span class="sourceLineNo">491</span> * remove replica columns if necessary.<a name="line.491"></a>
<span class="sourceLineNo">492</span> */<a name="line.492"></a>
<span class="sourceLineNo">493</span> private void removeReplicaColumnsIfNeeded(MasterProcedureEnv env) throws IOException {<a name="line.493"></a>
<span class="sourceLineNo">494</span> final int oldReplicaCount = unmodifiedTableDescriptor.getRegionReplication();<a name="line.494"></a>
<span class="sourceLineNo">495</span> final int newReplicaCount = modifiedTableDescriptor.getRegionReplication();<a name="line.495"></a>
<span class="sourceLineNo">496</span> if (newReplicaCount &gt;= oldReplicaCount) {<a name="line.496"></a>
<span class="sourceLineNo">497</span> return;<a name="line.497"></a>
<span class="sourceLineNo">498</span> }<a name="line.498"></a>
<span class="sourceLineNo">499</span> env.getAssignmentManager().getRegionStateStore().removeRegionReplicas(getTableName(),<a name="line.499"></a>
<span class="sourceLineNo">500</span> oldReplicaCount, newReplicaCount);<a name="line.500"></a>
<span class="sourceLineNo">501</span> env.getAssignmentManager().getRegionStates().getRegionsOfTable(getTableName()).stream()<a name="line.501"></a>
<span class="sourceLineNo">502</span> .filter(r -&gt; r.getReplicaId() &gt;= newReplicaCount)<a name="line.502"></a>
<span class="sourceLineNo">503</span> .forEach(env.getAssignmentManager().getRegionStates()::deleteRegion);<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> private void assignNewReplicasIfNeeded(MasterProcedureEnv env) throws IOException {<a name="line.506"></a>
<span class="sourceLineNo">507</span> final int oldReplicaCount = unmodifiedTableDescriptor.getRegionReplication();<a name="line.507"></a>
<span class="sourceLineNo">508</span> final int newReplicaCount = modifiedTableDescriptor.getRegionReplication();<a name="line.508"></a>
<span class="sourceLineNo">509</span> if (newReplicaCount &lt;= oldReplicaCount) {<a name="line.509"></a>
<span class="sourceLineNo">510</span> return;<a name="line.510"></a>
<span class="sourceLineNo">511</span> }<a name="line.511"></a>
<span class="sourceLineNo">512</span> if (isTableEnabled(env)) {<a name="line.512"></a>
<span class="sourceLineNo">513</span> List&lt;RegionInfo&gt; newReplicas = env.getAssignmentManager().getRegionStates()<a name="line.513"></a>
<span class="sourceLineNo">514</span> .getRegionsOfTable(getTableName()).stream().filter(RegionReplicaUtil::isDefaultReplica)<a name="line.514"></a>
<span class="sourceLineNo">515</span> .flatMap(primaryRegion -&gt; IntStream.range(oldReplicaCount, newReplicaCount).mapToObj(<a name="line.515"></a>
<span class="sourceLineNo">516</span> replicaId -&gt; RegionReplicaUtil.getRegionInfoForReplica(primaryRegion, replicaId)))<a name="line.516"></a>
<span class="sourceLineNo">517</span> .collect(Collectors.toList());<a name="line.517"></a>
<span class="sourceLineNo">518</span> addChildProcedure(env.getAssignmentManager().createAssignProcedures(newReplicas));<a name="line.518"></a>
<span class="sourceLineNo">519</span> }<a name="line.519"></a>
<span class="sourceLineNo">520</span> }<a name="line.520"></a>
<span class="sourceLineNo">521</span><a name="line.521"></a>
<span class="sourceLineNo">522</span> private void closeExcessReplicasIfNeeded(MasterProcedureEnv env) {<a name="line.522"></a>
<span class="sourceLineNo">523</span> final int oldReplicaCount = unmodifiedTableDescriptor.getRegionReplication();<a name="line.523"></a>
<span class="sourceLineNo">524</span> final int newReplicaCount = modifiedTableDescriptor.getRegionReplication();<a name="line.524"></a>
<span class="sourceLineNo">525</span> if (newReplicaCount &gt;= oldReplicaCount) {<a name="line.525"></a>
<span class="sourceLineNo">526</span> return;<a name="line.526"></a>
<span class="sourceLineNo">527</span> }<a name="line.527"></a>
<span class="sourceLineNo">528</span> addChildProcedure(new CloseExcessRegionReplicasProcedure(getTableName(), newReplicaCount));<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> * Action after modifying table.<a name="line.532"></a>
<span class="sourceLineNo">533</span> * @param env MasterProcedureEnv<a name="line.533"></a>
<span class="sourceLineNo">534</span> * @param state the procedure state<a name="line.534"></a>
<span class="sourceLineNo">535</span> */<a name="line.535"></a>
<span class="sourceLineNo">536</span> private void postModify(final MasterProcedureEnv env, final ModifyTableState state)<a name="line.536"></a>
<span class="sourceLineNo">537</span> throws IOException, InterruptedException {<a name="line.537"></a>
<span class="sourceLineNo">538</span> runCoprocessorAction(env, state);<a name="line.538"></a>
<span class="sourceLineNo">539</span> }<a name="line.539"></a>
<span class="sourceLineNo">540</span><a name="line.540"></a>
<span class="sourceLineNo">541</span> /**<a name="line.541"></a>
<span class="sourceLineNo">542</span> * Coprocessor Action.<a name="line.542"></a>
<span class="sourceLineNo">543</span> * @param env MasterProcedureEnv<a name="line.543"></a>
<span class="sourceLineNo">544</span> * @param state the procedure state<a name="line.544"></a>
<span class="sourceLineNo">545</span> */<a name="line.545"></a>
<span class="sourceLineNo">546</span> private void runCoprocessorAction(final MasterProcedureEnv env, final ModifyTableState state)<a name="line.546"></a>
<span class="sourceLineNo">547</span> throws IOException, InterruptedException {<a name="line.547"></a>
<span class="sourceLineNo">548</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.548"></a>
<span class="sourceLineNo">549</span> if (cpHost != null) {<a name="line.549"></a>
<span class="sourceLineNo">550</span> switch (state) {<a name="line.550"></a>
<span class="sourceLineNo">551</span> case MODIFY_TABLE_PRE_OPERATION:<a name="line.551"></a>
<span class="sourceLineNo">552</span> cpHost.preModifyTableAction(getTableName(), unmodifiedTableDescriptor,<a name="line.552"></a>
<span class="sourceLineNo">553</span> modifiedTableDescriptor, getUser());<a name="line.553"></a>
<span class="sourceLineNo">554</span> break;<a name="line.554"></a>
<span class="sourceLineNo">555</span> case MODIFY_TABLE_POST_OPERATION:<a name="line.555"></a>
<span class="sourceLineNo">556</span> cpHost.postCompletedModifyTableAction(getTableName(), unmodifiedTableDescriptor,<a name="line.556"></a>
<span class="sourceLineNo">557</span> modifiedTableDescriptor, getUser());<a name="line.557"></a>
<span class="sourceLineNo">558</span> break;<a name="line.558"></a>
<span class="sourceLineNo">559</span> default:<a name="line.559"></a>
<span class="sourceLineNo">560</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.560"></a>
<span class="sourceLineNo">561</span> }<a name="line.561"></a>
<span class="sourceLineNo">562</span> }<a name="line.562"></a>
<span class="sourceLineNo">563</span> }<a name="line.563"></a>
<span class="sourceLineNo">564</span><a name="line.564"></a>
<span class="sourceLineNo">565</span> /**<a name="line.565"></a>
<span class="sourceLineNo">566</span> * Fetches all Regions for a table. Cache the result of this method if you need to use it multiple<a name="line.566"></a>
<span class="sourceLineNo">567</span> * times. Be aware that it may change over in between calls to this procedure.<a name="line.567"></a>
<span class="sourceLineNo">568</span> */<a name="line.568"></a>
<span class="sourceLineNo">569</span> private List&lt;RegionInfo&gt; getRegionInfoList(final MasterProcedureEnv env) throws IOException {<a name="line.569"></a>
<span class="sourceLineNo">570</span> return env.getAssignmentManager().getRegionStates().getRegionsOfTable(getTableName());<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>
</pre>
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