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<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.rsgroup;</span>
<span class="source-line-no">019</span><span id="line-19"></span>
<span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.ArrayList;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.List;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.Set;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.TableNotFoundException;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.client.Admin;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.client.BalanceRequest;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.client.BalanceResponse;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.client.Connection;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.net.Address;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">032</span><span id="line-32"></span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hbase.thirdparty.com.google.common.collect.Sets;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;</span>
<span class="source-line-no">035</span><span id="line-35"></span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.AddRSGroupRequest;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.BalanceRSGroupRequest;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfServerRequest;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfServerResponse;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfTableRequest;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfTableResponse;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoRequest;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoResponse;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.ListRSGroupInfosRequest;</span>
<span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.MoveServersAndTablesRequest;</span>
<span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.MoveServersRequest;</span>
<span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.MoveTablesRequest;</span>
<span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.RSGroupAdminService;</span>
<span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.RemoveRSGroupRequest;</span>
<span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupAdminProtos.RemoveServersRequest;</span>
<span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.shaded.protobuf.generated.RSGroupProtos;</span>
<span class="source-line-no">054</span><span id="line-54"></span>
<span class="source-line-no">055</span><span id="line-55">/**</span>
<span class="source-line-no">056</span><span id="line-56"> * Client used for managing region server group information.</span>
<span class="source-line-no">057</span><span id="line-57"> * @deprecated Keep it here only for tests, using {@link Admin} instead.</span>
<span class="source-line-no">058</span><span id="line-58"> */</span>
<span class="source-line-no">059</span><span id="line-59">@Deprecated</span>
<span class="source-line-no">060</span><span id="line-60">@InterfaceAudience.Private</span>
<span class="source-line-no">061</span><span id="line-61">public class RSGroupAdminClient {</span>
<span class="source-line-no">062</span><span id="line-62"> private RSGroupAdminService.BlockingInterface stub;</span>
<span class="source-line-no">063</span><span id="line-63"> private Admin admin;</span>
<span class="source-line-no">064</span><span id="line-64"></span>
<span class="source-line-no">065</span><span id="line-65"> public RSGroupAdminClient(Connection conn) throws IOException {</span>
<span class="source-line-no">066</span><span id="line-66"> admin = conn.getAdmin();</span>
<span class="source-line-no">067</span><span id="line-67"> stub = RSGroupAdminService.newBlockingStub(admin.coprocessorService());</span>
<span class="source-line-no">068</span><span id="line-68"> }</span>
<span class="source-line-no">069</span><span id="line-69"></span>
<span class="source-line-no">070</span><span id="line-70"> /**</span>
<span class="source-line-no">071</span><span id="line-71"> * Gets {@code RSGroupInfo} for given group name.</span>
<span class="source-line-no">072</span><span id="line-72"> */</span>
<span class="source-line-no">073</span><span id="line-73"> public RSGroupInfo getRSGroupInfo(String groupName) throws IOException {</span>
<span class="source-line-no">074</span><span id="line-74"> try {</span>
<span class="source-line-no">075</span><span id="line-75"> GetRSGroupInfoResponse resp = stub.getRSGroupInfo(null,</span>
<span class="source-line-no">076</span><span id="line-76"> GetRSGroupInfoRequest.newBuilder().setRSGroupName(groupName).build());</span>
<span class="source-line-no">077</span><span id="line-77"> if (resp.hasRSGroupInfo()) {</span>
<span class="source-line-no">078</span><span id="line-78"> return ProtobufUtil.toGroupInfo(resp.getRSGroupInfo());</span>
<span class="source-line-no">079</span><span id="line-79"> }</span>
<span class="source-line-no">080</span><span id="line-80"> return null;</span>
<span class="source-line-no">081</span><span id="line-81"> } catch (ServiceException e) {</span>
<span class="source-line-no">082</span><span id="line-82"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">083</span><span id="line-83"> }</span>
<span class="source-line-no">084</span><span id="line-84"> }</span>
<span class="source-line-no">085</span><span id="line-85"></span>
<span class="source-line-no">086</span><span id="line-86"> /**</span>
<span class="source-line-no">087</span><span id="line-87"> * Gets {@code RSGroupInfo} for the given table's group.</span>
<span class="source-line-no">088</span><span id="line-88"> */</span>
<span class="source-line-no">089</span><span id="line-89"> public RSGroupInfo getRSGroupInfoOfTable(TableName tableName) throws IOException {</span>
<span class="source-line-no">090</span><span id="line-90"> GetRSGroupInfoOfTableRequest request = GetRSGroupInfoOfTableRequest.newBuilder()</span>
<span class="source-line-no">091</span><span id="line-91"> .setTableName(ProtobufUtil.toProtoTableName(tableName)).build();</span>
<span class="source-line-no">092</span><span id="line-92"> try {</span>
<span class="source-line-no">093</span><span id="line-93"> GetRSGroupInfoOfTableResponse resp = stub.getRSGroupInfoOfTable(null, request);</span>
<span class="source-line-no">094</span><span id="line-94"> if (resp.hasRSGroupInfo()) {</span>
<span class="source-line-no">095</span><span id="line-95"> return ProtobufUtil.toGroupInfo(resp.getRSGroupInfo());</span>
<span class="source-line-no">096</span><span id="line-96"> }</span>
<span class="source-line-no">097</span><span id="line-97"> return null;</span>
<span class="source-line-no">098</span><span id="line-98"> } catch (ServiceException e) {</span>
<span class="source-line-no">099</span><span id="line-99"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">100</span><span id="line-100"> }</span>
<span class="source-line-no">101</span><span id="line-101"> }</span>
<span class="source-line-no">102</span><span id="line-102"></span>
<span class="source-line-no">103</span><span id="line-103"> /**</span>
<span class="source-line-no">104</span><span id="line-104"> * Move given set of servers to the specified target RegionServer group.</span>
<span class="source-line-no">105</span><span id="line-105"> */</span>
<span class="source-line-no">106</span><span id="line-106"> public void moveServers(Set&lt;Address&gt; servers, String targetGroup) throws IOException {</span>
<span class="source-line-no">107</span><span id="line-107"> Set&lt;HBaseProtos.ServerName&gt; hostPorts = Sets.newHashSet();</span>
<span class="source-line-no">108</span><span id="line-108"> for (Address el : servers) {</span>
<span class="source-line-no">109</span><span id="line-109"> hostPorts.add(HBaseProtos.ServerName.newBuilder().setHostName(el.getHostname())</span>
<span class="source-line-no">110</span><span id="line-110"> .setPort(el.getPort()).build());</span>
<span class="source-line-no">111</span><span id="line-111"> }</span>
<span class="source-line-no">112</span><span id="line-112"> MoveServersRequest request =</span>
<span class="source-line-no">113</span><span id="line-113"> MoveServersRequest.newBuilder().setTargetGroup(targetGroup).addAllServers(hostPorts).build();</span>
<span class="source-line-no">114</span><span id="line-114"> try {</span>
<span class="source-line-no">115</span><span id="line-115"> stub.moveServers(null, request);</span>
<span class="source-line-no">116</span><span id="line-116"> } catch (ServiceException e) {</span>
<span class="source-line-no">117</span><span id="line-117"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">118</span><span id="line-118"> }</span>
<span class="source-line-no">119</span><span id="line-119"> }</span>
<span class="source-line-no">120</span><span id="line-120"></span>
<span class="source-line-no">121</span><span id="line-121"> /**</span>
<span class="source-line-no">122</span><span id="line-122"> * Move given set of tables to the specified target RegionServer group. This will unassign all of</span>
<span class="source-line-no">123</span><span id="line-123"> * a table's region so it can be reassigned to the correct group.</span>
<span class="source-line-no">124</span><span id="line-124"> */</span>
<span class="source-line-no">125</span><span id="line-125"> public void moveTables(Set&lt;TableName&gt; tables, String targetGroup) throws IOException {</span>
<span class="source-line-no">126</span><span id="line-126"> MoveTablesRequest.Builder builder = MoveTablesRequest.newBuilder().setTargetGroup(targetGroup);</span>
<span class="source-line-no">127</span><span id="line-127"> for (TableName tableName : tables) {</span>
<span class="source-line-no">128</span><span id="line-128"> builder.addTableName(ProtobufUtil.toProtoTableName(tableName));</span>
<span class="source-line-no">129</span><span id="line-129"> if (!admin.tableExists(tableName)) {</span>
<span class="source-line-no">130</span><span id="line-130"> throw new TableNotFoundException(tableName);</span>
<span class="source-line-no">131</span><span id="line-131"> }</span>
<span class="source-line-no">132</span><span id="line-132"> }</span>
<span class="source-line-no">133</span><span id="line-133"> try {</span>
<span class="source-line-no">134</span><span id="line-134"> stub.moveTables(null, builder.build());</span>
<span class="source-line-no">135</span><span id="line-135"> } catch (ServiceException e) {</span>
<span class="source-line-no">136</span><span id="line-136"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">137</span><span id="line-137"> }</span>
<span class="source-line-no">138</span><span id="line-138"> }</span>
<span class="source-line-no">139</span><span id="line-139"></span>
<span class="source-line-no">140</span><span id="line-140"> /**</span>
<span class="source-line-no">141</span><span id="line-141"> * Creates a new RegionServer group with the given name.</span>
<span class="source-line-no">142</span><span id="line-142"> */</span>
<span class="source-line-no">143</span><span id="line-143"> public void addRSGroup(String groupName) throws IOException {</span>
<span class="source-line-no">144</span><span id="line-144"> AddRSGroupRequest request = AddRSGroupRequest.newBuilder().setRSGroupName(groupName).build();</span>
<span class="source-line-no">145</span><span id="line-145"> try {</span>
<span class="source-line-no">146</span><span id="line-146"> stub.addRSGroup(null, request);</span>
<span class="source-line-no">147</span><span id="line-147"> } catch (ServiceException e) {</span>
<span class="source-line-no">148</span><span id="line-148"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">149</span><span id="line-149"> }</span>
<span class="source-line-no">150</span><span id="line-150"> }</span>
<span class="source-line-no">151</span><span id="line-151"></span>
<span class="source-line-no">152</span><span id="line-152"> /**</span>
<span class="source-line-no">153</span><span id="line-153"> * Removes RegionServer group associated with the given name.</span>
<span class="source-line-no">154</span><span id="line-154"> */</span>
<span class="source-line-no">155</span><span id="line-155"> public void removeRSGroup(String name) throws IOException {</span>
<span class="source-line-no">156</span><span id="line-156"> RemoveRSGroupRequest request = RemoveRSGroupRequest.newBuilder().setRSGroupName(name).build();</span>
<span class="source-line-no">157</span><span id="line-157"> try {</span>
<span class="source-line-no">158</span><span id="line-158"> stub.removeRSGroup(null, request);</span>
<span class="source-line-no">159</span><span id="line-159"> } catch (ServiceException e) {</span>
<span class="source-line-no">160</span><span id="line-160"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">161</span><span id="line-161"> }</span>
<span class="source-line-no">162</span><span id="line-162"> }</span>
<span class="source-line-no">163</span><span id="line-163"></span>
<span class="source-line-no">164</span><span id="line-164"> /**</span>
<span class="source-line-no">165</span><span id="line-165"> * Balance regions in the given RegionServer group.</span>
<span class="source-line-no">166</span><span id="line-166"> * @return BalanceResponse details about the balancer run</span>
<span class="source-line-no">167</span><span id="line-167"> */</span>
<span class="source-line-no">168</span><span id="line-168"> public BalanceResponse balanceRSGroup(String groupName, BalanceRequest request)</span>
<span class="source-line-no">169</span><span id="line-169"> throws IOException {</span>
<span class="source-line-no">170</span><span id="line-170"> try {</span>
<span class="source-line-no">171</span><span id="line-171"> BalanceRSGroupRequest req = ProtobufUtil.createBalanceRSGroupRequest(groupName, request);</span>
<span class="source-line-no">172</span><span id="line-172"> return ProtobufUtil.toBalanceResponse(stub.balanceRSGroup(null, req));</span>
<span class="source-line-no">173</span><span id="line-173"> } catch (ServiceException e) {</span>
<span class="source-line-no">174</span><span id="line-174"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">175</span><span id="line-175"> }</span>
<span class="source-line-no">176</span><span id="line-176"> }</span>
<span class="source-line-no">177</span><span id="line-177"></span>
<span class="source-line-no">178</span><span id="line-178"> /**</span>
<span class="source-line-no">179</span><span id="line-179"> * Lists current set of RegionServer groups.</span>
<span class="source-line-no">180</span><span id="line-180"> */</span>
<span class="source-line-no">181</span><span id="line-181"> public List&lt;RSGroupInfo&gt; listRSGroups() throws IOException {</span>
<span class="source-line-no">182</span><span id="line-182"> try {</span>
<span class="source-line-no">183</span><span id="line-183"> List&lt;RSGroupProtos.RSGroupInfo&gt; resp = stub</span>
<span class="source-line-no">184</span><span id="line-184"> .listRSGroupInfos(null, ListRSGroupInfosRequest.getDefaultInstance()).getRSGroupInfoList();</span>
<span class="source-line-no">185</span><span id="line-185"> List&lt;RSGroupInfo&gt; result = new ArrayList&lt;&gt;(resp.size());</span>
<span class="source-line-no">186</span><span id="line-186"> for (RSGroupProtos.RSGroupInfo entry : resp) {</span>
<span class="source-line-no">187</span><span id="line-187"> result.add(ProtobufUtil.toGroupInfo(entry));</span>
<span class="source-line-no">188</span><span id="line-188"> }</span>
<span class="source-line-no">189</span><span id="line-189"> return result;</span>
<span class="source-line-no">190</span><span id="line-190"> } catch (ServiceException e) {</span>
<span class="source-line-no">191</span><span id="line-191"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">192</span><span id="line-192"> }</span>
<span class="source-line-no">193</span><span id="line-193"> }</span>
<span class="source-line-no">194</span><span id="line-194"></span>
<span class="source-line-no">195</span><span id="line-195"> /**</span>
<span class="source-line-no">196</span><span id="line-196"> * Retrieve the RSGroupInfo a server is affiliated to</span>
<span class="source-line-no">197</span><span id="line-197"> * @param hostPort HostPort to get RSGroupInfo for</span>
<span class="source-line-no">198</span><span id="line-198"> */</span>
<span class="source-line-no">199</span><span id="line-199"> public RSGroupInfo getRSGroupOfServer(Address hostPort) throws IOException {</span>
<span class="source-line-no">200</span><span id="line-200"> GetRSGroupInfoOfServerRequest request =</span>
<span class="source-line-no">201</span><span id="line-201"> GetRSGroupInfoOfServerRequest.newBuilder().setServer(HBaseProtos.ServerName.newBuilder()</span>
<span class="source-line-no">202</span><span id="line-202"> .setHostName(hostPort.getHostname()).setPort(hostPort.getPort()).build()).build();</span>
<span class="source-line-no">203</span><span id="line-203"> try {</span>
<span class="source-line-no">204</span><span id="line-204"> GetRSGroupInfoOfServerResponse resp = stub.getRSGroupInfoOfServer(null, request);</span>
<span class="source-line-no">205</span><span id="line-205"> if (resp.hasRSGroupInfo()) {</span>
<span class="source-line-no">206</span><span id="line-206"> return ProtobufUtil.toGroupInfo(resp.getRSGroupInfo());</span>
<span class="source-line-no">207</span><span id="line-207"> }</span>
<span class="source-line-no">208</span><span id="line-208"> return null;</span>
<span class="source-line-no">209</span><span id="line-209"> } catch (ServiceException e) {</span>
<span class="source-line-no">210</span><span id="line-210"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">211</span><span id="line-211"> }</span>
<span class="source-line-no">212</span><span id="line-212"> }</span>
<span class="source-line-no">213</span><span id="line-213"></span>
<span class="source-line-no">214</span><span id="line-214"> /**</span>
<span class="source-line-no">215</span><span id="line-215"> * Move given set of servers and tables to the specified target RegionServer group.</span>
<span class="source-line-no">216</span><span id="line-216"> * @param servers set of servers to move</span>
<span class="source-line-no">217</span><span id="line-217"> * @param tables set of tables to move</span>
<span class="source-line-no">218</span><span id="line-218"> * @param targetGroup the target group name</span>
<span class="source-line-no">219</span><span id="line-219"> * @throws IOException if moving the server and tables fail</span>
<span class="source-line-no">220</span><span id="line-220"> */</span>
<span class="source-line-no">221</span><span id="line-221"> public void moveServersAndTables(Set&lt;Address&gt; servers, Set&lt;TableName&gt; tables, String targetGroup)</span>
<span class="source-line-no">222</span><span id="line-222"> throws IOException {</span>
<span class="source-line-no">223</span><span id="line-223"> MoveServersAndTablesRequest.Builder builder =</span>
<span class="source-line-no">224</span><span id="line-224"> MoveServersAndTablesRequest.newBuilder().setTargetGroup(targetGroup);</span>
<span class="source-line-no">225</span><span id="line-225"> for (Address el : servers) {</span>
<span class="source-line-no">226</span><span id="line-226"> builder.addServers(HBaseProtos.ServerName.newBuilder().setHostName(el.getHostname())</span>
<span class="source-line-no">227</span><span id="line-227"> .setPort(el.getPort()).build());</span>
<span class="source-line-no">228</span><span id="line-228"> }</span>
<span class="source-line-no">229</span><span id="line-229"> for (TableName tableName : tables) {</span>
<span class="source-line-no">230</span><span id="line-230"> builder.addTableName(ProtobufUtil.toProtoTableName(tableName));</span>
<span class="source-line-no">231</span><span id="line-231"> if (!admin.tableExists(tableName)) {</span>
<span class="source-line-no">232</span><span id="line-232"> throw new TableNotFoundException(tableName);</span>
<span class="source-line-no">233</span><span id="line-233"> }</span>
<span class="source-line-no">234</span><span id="line-234"> }</span>
<span class="source-line-no">235</span><span id="line-235"> try {</span>
<span class="source-line-no">236</span><span id="line-236"> stub.moveServersAndTables(null, builder.build());</span>
<span class="source-line-no">237</span><span id="line-237"> } catch (ServiceException e) {</span>
<span class="source-line-no">238</span><span id="line-238"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">239</span><span id="line-239"> }</span>
<span class="source-line-no">240</span><span id="line-240"> }</span>
<span class="source-line-no">241</span><span id="line-241"></span>
<span class="source-line-no">242</span><span id="line-242"> /**</span>
<span class="source-line-no">243</span><span id="line-243"> * Remove decommissioned servers from rsgroup. 1. Sometimes we may find the server aborted due to</span>
<span class="source-line-no">244</span><span id="line-244"> * some hardware failure and we must offline the server for repairing. Or we need to move some</span>
<span class="source-line-no">245</span><span id="line-245"> * servers to join other clusters. So we need to remove these servers from the rsgroup. 2.</span>
<span class="source-line-no">246</span><span id="line-246"> * Dead/recovering/live servers will be disallowed.</span>
<span class="source-line-no">247</span><span id="line-247"> * @param servers set of servers to remove</span>
<span class="source-line-no">248</span><span id="line-248"> */</span>
<span class="source-line-no">249</span><span id="line-249"> public void removeServers(Set&lt;Address&gt; servers) throws IOException {</span>
<span class="source-line-no">250</span><span id="line-250"> Set&lt;HBaseProtos.ServerName&gt; hostPorts = Sets.newHashSet();</span>
<span class="source-line-no">251</span><span id="line-251"> for (Address el : servers) {</span>
<span class="source-line-no">252</span><span id="line-252"> hostPorts.add(HBaseProtos.ServerName.newBuilder().setHostName(el.getHostname())</span>
<span class="source-line-no">253</span><span id="line-253"> .setPort(el.getPort()).build());</span>
<span class="source-line-no">254</span><span id="line-254"> }</span>
<span class="source-line-no">255</span><span id="line-255"> RemoveServersRequest request =</span>
<span class="source-line-no">256</span><span id="line-256"> RemoveServersRequest.newBuilder().addAllServers(hostPorts).build();</span>
<span class="source-line-no">257</span><span id="line-257"> try {</span>
<span class="source-line-no">258</span><span id="line-258"> stub.removeServers(null, request);</span>
<span class="source-line-no">259</span><span id="line-259"> } catch (ServiceException e) {</span>
<span class="source-line-no">260</span><span id="line-260"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">261</span><span id="line-261"> }</span>
<span class="source-line-no">262</span><span id="line-262"> }</span>
<span class="source-line-no">263</span><span id="line-263">}</span>
</pre>
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