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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.rsgroup;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import edu.umd.cs.findbugs.annotations.NonNull;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Collections;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.HashMap;<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.Map;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Set;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.TreeMap;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.stream.Collectors;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.ClusterMetrics;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HConstants;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ServerName;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.TableName;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.constraint.ConstraintException;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.balancer.MasterClusterInfoProvider;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.net.Address;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.slf4j.Logger;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.slf4j.LoggerFactory;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hbase.thirdparty.com.google.common.collect.ArrayListMultimap;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hbase.thirdparty.com.google.common.collect.ListMultimap;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hbase.thirdparty.com.google.common.collect.Maps;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span>/**<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * GroupBasedLoadBalancer, used when Region Server Grouping is configured (HBase-6721) It does<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * region balance based on a table's group membership.<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * <p/><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * Most assignment methods contain two exclusive code paths: Online - when the group table is online<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * and Offline - when it is unavailable.<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * <p/><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * During Offline, assignments are assigned based on cached information in zookeeper. If unavailable<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * (ie bootstrap) then regions are assigned randomly.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * <p/><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Once the GROUP table has been assigned, the balancer switches to Online and will then start<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * providing appropriate assignments for user tables.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>@InterfaceAudience.Private<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>public class RSGroupBasedLoadBalancer implements LoadBalancer {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> private static final Logger LOG = LoggerFactory.getLogger(RSGroupBasedLoadBalancer.class);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private MasterServices masterServices;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private ClusterInfoProvider provider;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private FavoredNodesManager favoredNodesManager;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private volatile RSGroupInfoManager rsGroupInfoManager;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private volatile LoadBalancer internalBalancer;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> /**<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * Set this key to {@code true} to allow region fallback. Fallback to the default rsgroup first,<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> * then fallback to any group if no online servers in default rsgroup. Please keep balancer switch<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * on at the same time, which is relied on to correct misplaced regions<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> */<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public static final String FALLBACK_GROUP_ENABLE_KEY = "hbase.rsgroup.fallback.enable";<a name="line.86"></a> |
| <span class="sourceLineNo">087</span><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> private volatile boolean fallbackEnabled = false;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> /**<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * Used by reflection in {@link org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory}.<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> @InterfaceAudience.Private<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> public RSGroupBasedLoadBalancer() {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // must be called after calling initialize<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> @Override<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> public synchronized void updateClusterMetrics(ClusterMetrics sm) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> assert internalBalancer != null;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> internalBalancer.updateClusterMetrics(sm);<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> public synchronized void<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> updateBalancerLoadInfo(Map<TableName, Map<ServerName, List<RegionInfo>>> loadOfAllTable) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> internalBalancer.updateBalancerLoadInfo(loadOfAllTable);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> }<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> public void setMasterServices(MasterServices masterServices) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> this.masterServices = masterServices;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<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> * Balance by RSGroup.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> */<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> @Override<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> public synchronized List<RegionPlan> balanceCluster(<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> Map<TableName, Map<ServerName, List<RegionInfo>>> loadOfAllTable) throws IOException {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> if (!isOnline()) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> throw new ConstraintException(<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> RSGroupInfoManager.class.getSimpleName() + " is not online, unable to perform balance");<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> // Calculate correct assignments and a list of RegionPlan for mis-placed regions<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> Pair<Map<TableName, Map<ServerName, List<RegionInfo>>>,<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> List<RegionPlan>> correctedStateAndRegionPlans = correctAssignments(loadOfAllTable);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> Map<TableName, Map<ServerName, List<RegionInfo>>> correctedLoadOfAllTable =<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> correctedStateAndRegionPlans.getFirst();<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> List<RegionPlan> regionPlans = correctedStateAndRegionPlans.getSecond();<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> RSGroupInfo defaultInfo = rsGroupInfoManager.getRSGroup(RSGroupInfo.DEFAULT_GROUP);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // Add RegionPlan<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // for the regions which have been placed according to the region server group assignment<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> // into the movement list<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> try {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> // For each rsgroup<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> for (RSGroupInfo rsgroup : rsGroupInfoManager.listRSGroups()) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> LOG.debug("Balancing RSGroup={}", rsgroup.getName());<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> Map<TableName, Map<ServerName, List<RegionInfo>>> loadOfTablesInGroup = new HashMap<>();<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> for (Map.Entry<TableName, Map<ServerName, List<RegionInfo>>> entry : correctedLoadOfAllTable<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> .entrySet()) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> TableName tableName = entry.getKey();<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> RSGroupInfo targetRSGInfo = RSGroupUtil<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> .getRSGroupInfo(masterServices, rsGroupInfoManager, tableName).orElse(defaultInfo);<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> if (targetRSGInfo.getName().equals(rsgroup.getName())) {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> loadOfTablesInGroup.put(tableName, entry.getValue());<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> }<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> List<RegionPlan> groupPlans = null;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> if (!loadOfTablesInGroup.isEmpty()) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> LOG.info("Start Generate Balance plan for group: " + rsgroup.getName());<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> groupPlans = this.internalBalancer.balanceCluster(loadOfTablesInGroup);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> if (groupPlans != null) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> regionPlans.addAll(groupPlans);<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> } catch (IOException exp) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> LOG.warn("Exception while balancing cluster.", exp);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> regionPlans.clear();<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> // Return the whole movement list<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return regionPlans;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> @Override<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> @NonNull<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> public Map<ServerName, List<RegionInfo>> roundRobinAssignment(List<RegionInfo> regions,<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> List<ServerName> servers) throws IOException {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> Map<ServerName, List<RegionInfo>> assignments = Maps.newHashMap();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> List<Pair<List<RegionInfo>, List<ServerName>>> pairs =<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> generateGroupAssignments(regions, servers);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> for (Pair<List<RegionInfo>, List<ServerName>> pair : pairs) {<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> Map<ServerName, List<RegionInfo>> result =<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> this.internalBalancer.roundRobinAssignment(pair.getFirst(), pair.getSecond());<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> result.forEach((server, regionInfos) -> assignments<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> .computeIfAbsent(server, s -> Lists.newArrayList()).addAll(regionInfos));<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> return assignments;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> @Override<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> @NonNull<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> public Map<ServerName, List<RegionInfo>> retainAssignment(Map<RegionInfo, ServerName> regions,<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> List<ServerName> servers) throws HBaseIOException {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> try {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> Map<ServerName, List<RegionInfo>> assignments = new TreeMap<>();<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> List<Pair<List<RegionInfo>, List<ServerName>>> pairs =<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> generateGroupAssignments(Lists.newArrayList(regions.keySet()), servers);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> for (Pair<List<RegionInfo>, List<ServerName>> pair : pairs) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> List<RegionInfo> regionList = pair.getFirst();<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> Map<RegionInfo, ServerName> currentAssignmentMap = Maps.newTreeMap();<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> regionList.forEach(r -> currentAssignmentMap.put(r, regions.get(r)));<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> Map<ServerName, List<RegionInfo>> pairResult =<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> this.internalBalancer.retainAssignment(currentAssignmentMap, pair.getSecond());<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> pairResult.forEach((server, rs) -> assignments<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> .computeIfAbsent(server, s -> Lists.newArrayList()).addAll(rs));<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> return assignments;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> } catch (IOException e) {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> throw new HBaseIOException("Failed to do online retain assignment", e);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> }<a name="line.204"></a> |
| <span class="sourceLineNo">205</span><a name="line.205"></a> |
| <span class="sourceLineNo">206</span> @Override<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> public ServerName randomAssignment(RegionInfo region, List<ServerName> servers)<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> throws IOException {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> List<Pair<List<RegionInfo>, List<ServerName>>> pairs =<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> generateGroupAssignments(Lists.newArrayList(region), servers);<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> List<ServerName> filteredServers = pairs.iterator().next().getSecond();<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> return this.internalBalancer.randomAssignment(region, filteredServers);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> }<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> private List<Pair<List<RegionInfo>, List<ServerName>>> generateGroupAssignments(<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> List<RegionInfo> regions, List<ServerName> servers) throws HBaseIOException {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> try {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> ListMultimap<String, RegionInfo> regionMap = ArrayListMultimap.create();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> ListMultimap<String, ServerName> serverMap = ArrayListMultimap.create();<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> RSGroupInfo defaultInfo = rsGroupInfoManager.getRSGroup(RSGroupInfo.DEFAULT_GROUP);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> for (RegionInfo region : regions) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> String groupName =<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> RSGroupUtil.getRSGroupInfo(masterServices, rsGroupInfoManager, region.getTable())<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> .orElse(defaultInfo).getName();<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> regionMap.put(groupName, region);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> for (String groupKey : regionMap.keySet()) {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> RSGroupInfo info = rsGroupInfoManager.getRSGroup(groupKey);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> serverMap.putAll(groupKey, filterOfflineServers(info, servers));<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span><a name="line.231"></a> |
| <span class="sourceLineNo">232</span> List<Pair<List<RegionInfo>, List<ServerName>>> result = Lists.newArrayList();<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> List<RegionInfo> fallbackRegions = Lists.newArrayList();<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> for (String groupKey : regionMap.keySet()) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> if (serverMap.get(groupKey).isEmpty()) {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> fallbackRegions.addAll(regionMap.get(groupKey));<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> } else {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> result.add(Pair.newPair(regionMap.get(groupKey), serverMap.get(groupKey)));<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if (!fallbackRegions.isEmpty()) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> List<ServerName> candidates = null;<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (isFallbackEnabled()) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if (LOG.isDebugEnabled()) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> LOG.debug("Falling back {} regions to servers outside their RSGroup. Regions: {}",<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> fallbackRegions.size(), fallbackRegions.stream()<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> .map(RegionInfo::getRegionNameAsString).collect(Collectors.toSet()));<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> candidates = getFallBackCandidates(servers);<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> candidates = (candidates == null || candidates.isEmpty())<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> ? Lists.newArrayList(BOGUS_SERVER_NAME)<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> : candidates;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> result.add(Pair.newPair(fallbackRegions, candidates));<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> return result;<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> } catch (IOException e) {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> throw new HBaseIOException("Failed to generate group assignments", e);<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> }<a name="line.260"></a> |
| <span class="sourceLineNo">261</span><a name="line.261"></a> |
| <span class="sourceLineNo">262</span> private List<ServerName> filterOfflineServers(RSGroupInfo RSGroupInfo,<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> List<ServerName> onlineServers) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> if (RSGroupInfo != null) {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> return filterServers(RSGroupInfo.getServers(), onlineServers);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> } else {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> LOG.warn("RSGroup Information found to be null. Some regions might be unassigned.");<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> return Collections.emptyList();<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> /**<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> * Filter servers based on the online servers.<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * <p/><a name="line.274"></a> |
| <span class="sourceLineNo">275</span> * servers is actually a TreeSet (see {@link org.apache.hadoop.hbase.rsgroup.RSGroupInfo}), having<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * its contains()'s time complexity as O(logn), which is good enough.<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> * <p/><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> * TODO: consider using HashSet to pursue O(1) for contains() throughout the calling chain if<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * needed.<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * @param servers the servers<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> * @param onlineServers List of servers which are online.<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> * @return the list<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> */<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> private List<ServerName> filterServers(Set<Address> servers, List<ServerName> onlineServers) {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> ArrayList<ServerName> finalList = new ArrayList<>();<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> for (ServerName onlineServer : onlineServers) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> if (servers.contains(onlineServer.getAddress())) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> finalList.add(onlineServer);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> return finalList;<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> }<a name="line.292"></a> |
| <span class="sourceLineNo">293</span><a name="line.293"></a> |
| <span class="sourceLineNo">294</span> private Pair<Map<TableName, Map<ServerName, List<RegionInfo>>>, List<RegionPlan>><a name="line.294"></a> |
| <span class="sourceLineNo">295</span> correctAssignments(Map<TableName, Map<ServerName, List<RegionInfo>>> existingAssignments)<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> throws IOException {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // To return<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> Map<TableName, Map<ServerName, List<RegionInfo>>> correctAssignments = new HashMap<>();<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> List<RegionPlan> regionPlansForMisplacedRegions = new ArrayList<>();<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> RSGroupInfo defaultInfo = rsGroupInfoManager.getRSGroup(RSGroupInfo.DEFAULT_GROUP);<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> for (Map.Entry<TableName, Map<ServerName, List<RegionInfo>>> assignments : existingAssignments<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> .entrySet()) {<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> TableName tableName = assignments.getKey();<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> Map<ServerName, List<RegionInfo>> clusterLoad = assignments.getValue();<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> RSGroupInfo targetRSGInfo = null;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> Map<ServerName, List<RegionInfo>> correctServerRegion = new TreeMap<>();<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> try {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> targetRSGInfo = RSGroupUtil.getRSGroupInfo(masterServices, rsGroupInfoManager, tableName)<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> .orElse(defaultInfo);<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> } catch (IOException exp) {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> LOG.debug("RSGroup information null for region of table " + tableName, exp);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> for (Map.Entry<ServerName, List<RegionInfo>> serverRegionMap : clusterLoad.entrySet()) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> ServerName currentHostServer = serverRegionMap.getKey();<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> List<RegionInfo> regionInfoList = serverRegionMap.getValue();<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> if (<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> targetRSGInfo == null || !targetRSGInfo.containsServer(currentHostServer.getAddress())<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> ) {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> regionInfoList.forEach(regionInfo -> {<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> regionPlansForMisplacedRegions.add(new RegionPlan(regionInfo, currentHostServer, null));<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> });<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> } else {<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> correctServerRegion.put(currentHostServer, regionInfoList);<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> correctAssignments.put(tableName, correctServerRegion);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span><a name="line.328"></a> |
| <span class="sourceLineNo">329</span> // Return correct assignments and region movement plan for mis-placed regions together<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> return new Pair<Map<TableName, Map<ServerName, List<RegionInfo>>>, List<RegionPlan>>(<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> correctAssignments, regionPlansForMisplacedRegions);<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> }<a name="line.332"></a> |
| <span class="sourceLineNo">333</span><a name="line.333"></a> |
| <span class="sourceLineNo">334</span> @Override<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> public void initialize() throws IOException {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> if (rsGroupInfoManager == null) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> rsGroupInfoManager = masterServices.getRSGroupInfoManager();<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> if (rsGroupInfoManager == null) {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> String msg = "RSGroupInfoManager hasn't been initialized";<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> LOG.error(msg);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> throw new HBaseIOException(msg);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> }<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> rsGroupInfoManager.start();<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> // Create the balancer<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> Configuration conf = masterServices.getConfiguration();<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> Class<? extends LoadBalancer> balancerClass;<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> @SuppressWarnings("deprecation")<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> String balancerClassName = conf.get(HBASE_RSGROUP_LOADBALANCER_CLASS);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> if (balancerClassName == null) {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> balancerClass = conf.getClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS,<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> LoadBalancerFactory.getDefaultLoadBalancerClass(), LoadBalancer.class);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> } else {<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> try {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> balancerClass = Class.forName(balancerClassName).asSubclass(LoadBalancer.class);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> } catch (ClassNotFoundException e) {<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> throw new IOException(e);<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> }<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> }<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> this.provider = new MasterClusterInfoProvider(masterServices);<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> // avoid infinite nesting<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> if (getClass().isAssignableFrom(balancerClass)) {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> balancerClass = LoadBalancerFactory.getDefaultLoadBalancerClass();<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> }<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> internalBalancer = ReflectionUtils.newInstance(balancerClass);<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> internalBalancer.setClusterInfoProvider(provider);<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> // special handling for favor node balancers<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> if (internalBalancer instanceof FavoredNodesPromoter) {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> favoredNodesManager = new FavoredNodesManager(provider);<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> ((FavoredNodesPromoter) internalBalancer).setFavoredNodesManager(favoredNodesManager);<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> }<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> internalBalancer.initialize();<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> // init fallback groups<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> this.fallbackEnabled = conf.getBoolean(FALLBACK_GROUP_ENABLE_KEY, false);<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> public boolean isOnline() {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> if (this.rsGroupInfoManager == null) {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return false;<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> return this.rsGroupInfoManager.isOnline();<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> }<a name="line.384"></a> |
| <span class="sourceLineNo">385</span><a name="line.385"></a> |
| <span class="sourceLineNo">386</span> public boolean isFallbackEnabled() {<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> return fallbackEnabled;<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> @Override<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> public void regionOnline(RegionInfo regionInfo, ServerName sn) {<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> }<a name="line.392"></a> |
| <span class="sourceLineNo">393</span><a name="line.393"></a> |
| <span class="sourceLineNo">394</span> @Override<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> public void regionOffline(RegionInfo regionInfo) {<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> }<a name="line.396"></a> |
| <span class="sourceLineNo">397</span><a name="line.397"></a> |
| <span class="sourceLineNo">398</span> @Override<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> public synchronized void onConfigurationChange(Configuration conf) {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> boolean newFallbackEnabled = conf.getBoolean(FALLBACK_GROUP_ENABLE_KEY, false);<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> if (fallbackEnabled != newFallbackEnabled) {<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> LOG.info("Changing the value of {} from {} to {}", FALLBACK_GROUP_ENABLE_KEY, fallbackEnabled,<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> newFallbackEnabled);<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> fallbackEnabled = newFallbackEnabled;<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> }<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> provider.onConfigurationChange(conf);<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> internalBalancer.onConfigurationChange(conf);<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> }<a name="line.408"></a> |
| <span class="sourceLineNo">409</span><a name="line.409"></a> |
| <span class="sourceLineNo">410</span> @Override<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> public void stop(String why) {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> internalBalancer.stop(why);<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> @Override<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> public boolean isStopped() {<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> return internalBalancer.isStopped();<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> public LoadBalancer getInternalBalancer() {<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> return internalBalancer;<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> }<a name="line.422"></a> |
| <span class="sourceLineNo">423</span><a name="line.423"></a> |
| <span class="sourceLineNo">424</span> public FavoredNodesManager getFavoredNodesManager() {<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> return favoredNodesManager;<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> }<a name="line.426"></a> |
| <span class="sourceLineNo">427</span><a name="line.427"></a> |
| <span class="sourceLineNo">428</span> @Override<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> public synchronized void postMasterStartupInitialize() {<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> this.internalBalancer.postMasterStartupInitialize();<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> }<a name="line.431"></a> |
| <span class="sourceLineNo">432</span><a name="line.432"></a> |
| <span class="sourceLineNo">433</span> public void updateBalancerStatus(boolean status) {<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> internalBalancer.updateBalancerStatus(status);<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> private List<ServerName> getFallBackCandidates(List<ServerName> servers) {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> List<ServerName> serverNames = null;<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> try {<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> RSGroupInfo info = rsGroupInfoManager.getRSGroup(RSGroupInfo.DEFAULT_GROUP);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> serverNames = filterOfflineServers(info, servers);<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> } catch (IOException e) {<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> LOG.error("Failed to get default rsgroup info to fallback", e);<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> return serverNames == null || serverNames.isEmpty() ? servers : serverNames;<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> }<a name="line.446"></a> |
| <span class="sourceLineNo">447</span><a name="line.447"></a> |
| <span class="sourceLineNo">448</span> @Override<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> public void setClusterInfoProvider(ClusterInfoProvider provider) {<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> throw new UnsupportedOperationException("Just call set master service instead");<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> }<a name="line.451"></a> |
| <span class="sourceLineNo">452</span>}<a name="line.452"></a> |
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| </pre> |
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| </html> |
