You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/05/24 14:48:30 UTC
[10/51] [partial] hbase-site git commit: Published site at
f3d1c021de2264301f68eadb9ef126ff83d7ef53.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/883dde2f/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.html b/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.html
index 54b1f96..ed95cbf 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.html
@@ -31,922 +31,906 @@
<span class="sourceLineNo">023</span>import java.io.ByteArrayInputStream;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.ArrayList;<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.HashMap;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.HashSet;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.LinkedList;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.List;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.Map;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.NavigableSet;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.Set;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.util.SortedSet;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.util.TreeSet;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.conf.Configuration;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.Cell;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.41"></a>
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-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HConstants;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.47"></a>
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-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.TableName;<a name="line.50"></a>
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-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.Delete;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.Get;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.54"></a>
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-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.client.Result;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.client.Table;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.60"></a>
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-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;<a name="line.62"></a>
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-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.67"></a>
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-<span class="sourceLineNo">088</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>import org.apache.hbase.thirdparty.com.google.common.collect.Maps;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>import org.apache.hbase.thirdparty.com.google.common.collect.Sets;<a name="line.90"></a>
-<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;<a name="line.91"></a>
-<span class="sourceLineNo">092</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;<a name="line.92"></a>
-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span>/**<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * This is an implementation of {@link RSGroupInfoManager} which makes<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * use of an HBase table as the persistence store for the group information.<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * It also makes use of zookeeper to store group information needed<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * for bootstrapping during offline mode.<a name="line.98"></a>
-<span class="sourceLineNo">099</span> *<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * <h2>Concurrency</h2><a name="line.100"></a>
-<span class="sourceLineNo">101</span> * RSGroup state is kept locally in Maps. There is a rsgroup name to cached<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * RSGroupInfo Map at {@link #rsGroupMap} and a Map of tables to the name of the<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * rsgroup they belong too (in {@link #tableMap}). These Maps are persisted to the<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * hbase:rsgroup table (and cached in zk) on each modification.<a name="line.104"></a>
-<span class="sourceLineNo">105</span> *<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * <p>Mutations on state are synchronized but reads can continue without having<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * to wait on an instance monitor, mutations do wholesale replace of the Maps on<a name="line.107"></a>
-<span class="sourceLineNo">108</span> * update -- Copy-On-Write; the local Maps of state are read-only, just-in-case<a name="line.108"></a>
-<span class="sourceLineNo">109</span> * (see flushConfig).<a name="line.109"></a>
-<span class="sourceLineNo">110</span> *<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * <p>Reads must not block else there is a danger we'll deadlock.<a name="line.111"></a>
-<span class="sourceLineNo">112</span> *<a name="line.112"></a>
-<span class="sourceLineNo">113</span> * <p>Clients of this class, the {@link RSGroupAdminEndpoint} for example, want to query and<a name="line.113"></a>
-<span class="sourceLineNo">114</span> * then act on the results of the query modifying cache in zookeeper without another thread<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * making intermediate modifications. These clients synchronize on the 'this' instance so<a name="line.115"></a>
-<span class="sourceLineNo">116</span> * no other has access concurrently. Reads must be able to continue concurrently.<a name="line.116"></a>
-<span class="sourceLineNo">117</span> */<a name="line.117"></a>
-<span class="sourceLineNo">118</span>@InterfaceAudience.Private<a name="line.118"></a>
-<span class="sourceLineNo">119</span>final class RSGroupInfoManagerImpl implements RSGroupInfoManager {<a name="line.119"></a>
-<span class="sourceLineNo">120</span> private static final Logger LOG = LoggerFactory.getLogger(RSGroupInfoManagerImpl.class);<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span> /** Table descriptor for <code>hbase:rsgroup</code> catalog table */<a name="line.122"></a>
-<span class="sourceLineNo">123</span> private final static HTableDescriptor RSGROUP_TABLE_DESC;<a name="line.123"></a>
-<span class="sourceLineNo">124</span> static {<a name="line.124"></a>
-<span class="sourceLineNo">125</span> RSGROUP_TABLE_DESC = new HTableDescriptor(RSGROUP_TABLE_NAME);<a name="line.125"></a>
-<span class="sourceLineNo">126</span> RSGROUP_TABLE_DESC.addFamily(new HColumnDescriptor(META_FAMILY_BYTES));<a name="line.126"></a>
-<span class="sourceLineNo">127</span> RSGROUP_TABLE_DESC.setRegionSplitPolicyClassName(DisabledRegionSplitPolicy.class.getName());<a name="line.127"></a>
-<span class="sourceLineNo">128</span> try {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> RSGROUP_TABLE_DESC.addCoprocessor(<a name="line.129"></a>
-<span class="sourceLineNo">130</span> MultiRowMutationEndpoint.class.getName(),<a name="line.130"></a>
-<span class="sourceLineNo">131</span> null, Coprocessor.PRIORITY_SYSTEM, null);<a name="line.131"></a>
-<span class="sourceLineNo">132</span> } catch (IOException ex) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> throw new RuntimeException(ex);<a name="line.133"></a>
-<span class="sourceLineNo">134</span> }<a name="line.134"></a>
-<span class="sourceLineNo">135</span> }<a name="line.135"></a>
-<span class="sourceLineNo">136</span><a name="line.136"></a>
-<span class="sourceLineNo">137</span> // There two Maps are immutable and wholesale replaced on each modification<a name="line.137"></a>
-<span class="sourceLineNo">138</span> // so are safe to access concurrently. See class comment.<a name="line.138"></a>
-<span class="sourceLineNo">139</span> private volatile Map<String, RSGroupInfo> rsGroupMap = Collections.emptyMap();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> private volatile Map<TableName, String> tableMap = Collections.emptyMap();<a name="line.140"></a>
-<span class="sourceLineNo">141</span><a name="line.141"></a>
-<span class="sourceLineNo">142</span> private final MasterServices masterServices;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> private Table rsGroupTable;<a name="line.143"></a>
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-<span class="sourceLineNo">145</span> private final ZKWatcher watcher;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> private final RSGroupStartupWorker rsGroupStartupWorker = new RSGroupStartupWorker();<a name="line.146"></a>
-<span class="sourceLineNo">147</span> // contains list of groups that were last flushed to persistent store<a name="line.147"></a>
-<span class="sourceLineNo">148</span> private Set<String> prevRSGroups = new HashSet<>();<a name="line.148"></a>
-<span class="sourceLineNo">149</span> private final ServerEventsListenerThread serverEventsListenerThread =<a name="line.149"></a>
-<span class="sourceLineNo">150</span> new ServerEventsListenerThread();<a name="line.150"></a>
-<span class="sourceLineNo">151</span> private FailedOpenUpdaterThread failedOpenUpdaterThread;<a name="line.151"></a>
-<span class="sourceLineNo">152</span><a name="line.152"></a>
-<span class="sourceLineNo">153</span> private RSGroupInfoManagerImpl(MasterServices masterServices) throws IOException {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> this.masterServices = masterServices;<a name="line.154"></a>
-<span class="sourceLineNo">155</span> this.watcher = masterServices.getZooKeeper();<a name="line.155"></a>
-<span class="sourceLineNo">156</span> this.conn = masterServices.getClusterConnection();<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> private synchronized void init() throws IOException{<a name="line.159"></a>
-<span class="sourceLineNo">160</span> refresh();<a name="line.160"></a>
-<span class="sourceLineNo">161</span> serverEventsListenerThread.start();<a name="line.161"></a>
-<span class="sourceLineNo">162</span> masterServices.getServerManager().registerListener(serverEventsListenerThread);<a name="line.162"></a>
-<span class="sourceLineNo">163</span> failedOpenUpdaterThread = new FailedOpenUpdaterThread(masterServices.getConfiguration());<a name="line.163"></a>
-<span class="sourceLineNo">164</span> failedOpenUpdaterThread.start();<a name="line.164"></a>
-<span class="sourceLineNo">165</span> masterServices.getServerManager().registerListener(failedOpenUpdaterThread);<a name="line.165"></a>
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-<span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span> static RSGroupInfoManager getInstance(MasterServices master) throws IOException {<a name="line.168"></a>
-<span class="sourceLineNo">169</span> RSGroupInfoManagerImpl instance = new RSGroupInfoManagerImpl(master);<a name="line.169"></a>
-<span class="sourceLineNo">170</span> instance.init();<a name="line.170"></a>
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-<span class="sourceLineNo">175</span> // create system table of rsgroup<a name="line.175"></a>
-<span class="sourceLineNo">176</span> rsGroupStartupWorker.start();<a name="line.176"></a>
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-<span class="sourceLineNo">181</span> checkGroupName(rsGroupInfo.getName());<a name="line.181"></a>
-<span class="sourceLineNo">182</span> if (rsGroupMap.get(rsGroupInfo.getName()) != null ||<a name="line.182"></a>
-<span class="sourceLineNo">183</span> rsGroupInfo.getName().equals(RSGroupInfo.DEFAULT_GROUP)) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> throw new DoNotRetryIOException("Group already exists: "+ rsGroupInfo.getName());<a name="line.184"></a>
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-<span class="sourceLineNo">186</span> Map<String, RSGroupInfo> newGroupMap = Maps.newHashMap(rsGroupMap);<a name="line.186"></a>
-<span class="sourceLineNo">187</span> newGroupMap.put(rsGroupInfo.getName(), rsGroupInfo);<a name="line.187"></a>
-<span class="sourceLineNo">188</span> flushConfig(newGroupMap);<a name="line.188"></a>
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-<span class="sourceLineNo">192</span> RSGroupInfo rsGroupInfo = getRSGroup(groupName);<a name="line.192"></a>
-<span class="sourceLineNo">193</span> if (rsGroupInfo == null) {<a name="line.193"></a>
-<span class="sourceLineNo">194</span> throw new DoNotRetryIOException("RSGroup " + groupName + " does not exist");<a name="line.194"></a>
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-<span class="sourceLineNo">196</span> return rsGroupInfo;<a name="line.196"></a>
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-<span class="sourceLineNo">201</span> String dstGroup) throws IOException {<a name="line.201"></a>
-<span class="sourceLineNo">202</span> RSGroupInfo src = getRSGroupInfo(srcGroup);<a name="line.202"></a>
-<span class="sourceLineNo">203</span> RSGroupInfo dst = getRSGroupInfo(dstGroup);<a name="line.203"></a>
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-<span class="sourceLineNo">208</span> Utility.getOnlineServers(this.masterServices): null;<a name="line.208"></a>
-<span class="sourceLineNo">209</span> for (Address el: servers) {<a name="line.209"></a>
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-<span class="sourceLineNo">222</span> newGroupMap.put(src.getName(), src);<a name="line.222"></a>
-<span class="sourceLineNo">223</span> newGroupMap.put(dst.getName(), dst);<a name="line.223"></a>
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-<span class="sourceLineNo">312</span> newGroupMap.put(srcGroupInfo.getName(), srcGroupInfo);<a name="line.312"></a>
-<span class="sourceLineNo">313</span> newGroupMap.put(dstGroupInfo.getName(), dstGroupInfo);<a name="line.313"></a>
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-<span class="sourceLineNo">319</span> Map<String, RSGroupInfo> rsGroupInfos = new HashMap<String, RSGroupInfo>();<a name="line.319"></a>
-<span class="sourceLineNo">320</span> for (Address el: servers) {<a name="line.320"></a>
-<span class="sourceLineNo">321</span> RSGroupInfo rsGroupInfo = getRSGroupOfServer(el);<a name="line.321"></a>
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-<span class="sourceLineNo">325</span> rsGroupInfo.removeServer(el);<a name="line.325"></a>
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-<span class="sourceLineNo">346</span> RSGroupProtos.RSGroupInfo proto = RSGroupProtos.RSGroupInfo.parseFrom(<a name="line.346"></a>
-<span class="sourceLineNo">347</span> result.getValue(META_FAMILY_BYTES, META_QUALIFIER_BYTES));<a name="line.347"></a>
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-<span class="sourceLineNo">354</span> String groupBasePath = ZNodePaths.joinZNode(watcher.znodePaths.baseZNode, rsGroupZNode);<a name="line.354"></a>
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-<span class="sourceLineNo">367</span> ByteArrayInputStream bis = new ByteArrayInputStream(<a name="line.367"></a>
-<span class="sourceLineNo">368</span> data, ProtobufUtil.lengthOfPBMagic(), data.length);<a name="line.368"></a>
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-<span class="sourceLineNo">370</span> RSGroupProtos.RSGroupInfo.parseFrom(bis)));<a name="line.370"></a>
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-<span class="sourceLineNo">388</span> * Update zk cache. Called on startup of the manager.<a name="line.388"></a>
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-<span class="sourceLineNo">396</span> LOG.debug("Refreshing in Online mode.");<a name="line.396"></a>
-<span class="sourceLineNo">397</span> if (rsGroupTable == null) {<a name="line.397"></a>
-<span class="sourceLineNo">398</span> rsGroupTable = conn.getTable(RSGROUP_TABLE_NAME);<a name="line.398"></a>
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-<span class="sourceLineNo">401</span> } else {<a name="line.401"></a>
-<span class="sourceLineNo">402</span> LOG.debug("Refreshing in Offline mode.");<a name="line.402"></a>
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-<span class="sourceLineNo">412</span> List<TableName> specialTables =<a name="line.412"></a>
-<span class="sourceLineNo">413</span> new ArrayList<TableName>(Arrays.asList(AccessControlLists.ACL_TABLE_NAME,<a name="line.413"></a>
-<span class="sourceLineNo">414</span> TableName.META_TABLE_NAME, TableName.NAMESPACE_TABLE_NAME, RSGROUP_TABLE_NAME));<a name="line.414"></a>
-<span class="sourceLineNo">415</span> // if quota is enabled, add corresponding system table to special tables list<a name="line.415"></a>
-<span class="sourceLineNo">416</span> if (QuotaUtil.isQuotaEnabled(conn.getConfiguration())) {<a name="line.416"></a>
-<span class="sourceLineNo">417</span> specialTables.add(QuotaTableUtil.QUOTA_TABLE_NAME);<a name="line.417"></a>
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-<span class="sourceLineNo">419</span><a name="line.419"></a>
-<span class="sourceLineNo">420</span> for (TableName table : specialTables) {<a name="line.420"></a>
-<span class="sourceLineNo">421</span> orphanTables.add(table);<a name="line.421"></a>
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-<span class="sourceLineNo">423</span> for (RSGroupInfo group: groupList) {<a name="line.423"></a>
-<span class="sourceLineNo">424</span> if(!group.getName().equals(RSGroupInfo.DEFAULT_GROUP)) {<a name="line.424"></a>
-<span class="sourceLineNo">425</span> orphanTables.removeAll(group.getTables());<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><a name="line.428"></a>
-<span class="sourceLineNo">429</span> // This is added to the last of the list so it overwrites the 'default' rsgroup loaded<a name="line.429"></a>
-<span class="sourceLineNo">430</span> // from region group table or zk<a name="line.430"></a>
-<span class="sourceLineNo">431</span> groupList.add(new RSGroupInfo(RSGroupInfo.DEFAULT_GROUP, getDefaultServers(),<a name="line.431"></a>
-<span class="sourceLineNo">432</span> orphanTables));<a name="line.432"></a>
-<span class="sourceLineNo">433</span><a name="line.433"></a>
-<span class="sourceLineNo">434</span> // populate the data<a name="line.434"></a>
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-<span class="sourceLineNo">436</span> HashMap<TableName, String> newTableMap = Maps.newHashMap();<a name="line.436"></a>
-<span class="sourceLineNo">437</span> for (RSGroupInfo group : groupList) {<a name="line.437"></a>
-<span class="sourceLineNo">438</span> newGroupMap.put(group.getName(), group);<a name="line.438"></a>
-<span class="sourceLineNo">439</span> for(TableName table: group.getTables()) {<a name="line.439"></a>
-<span class="sourceLineNo">440</span> newTableMap.put(table, group.getName());<a name="line.440"></a>
+<span class="sourceLineNo">026</span>import java.util.Collections;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.HashMap;<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.LinkedList;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.List;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.Map;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.NavigableSet;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.util.Set;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import java.util.SortedSet;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import java.util.TreeSet;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.36"></a>
+<span class="sourceLineNo">037</span><a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.conf.Configuration;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.Cell;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HConstants;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.MetaTableAccessor.DefaultVisitorBase;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.ServerName;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.TableName;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.ClusterConnection;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.Delete;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.Get;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.Put;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.client.Result;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.client.Table;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.constraint.ConstraintException;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.net.Address;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.protobuf.ProtobufMagic;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.protobuf.ProtobufUtil;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.protobuf.generated.RSGroupProtos;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.regionserver.DisabledRegionSplitPolicy;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.zookeeper.ZKUtil;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.apache.zookeeper.KeeperException;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.slf4j.Logger;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>import org.slf4j.LoggerFactory;<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>import org.apache.hbase.thirdparty.com.google.common.collect.Maps;<a name="line.85"></a>
+<span class="sourceLineNo">086</span>import org.apache.hbase.thirdparty.com.google.common.collect.Sets;<a name="line.86"></a>
+<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;<a name="line.87"></a>
+<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;<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> * This is an implementation of {@link RSGroupInfoManager} which makes<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * use of an HBase table as the persistence store for the group information.<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * It also makes use of zookeeper to store group information needed<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * for bootstrapping during offline mode.<a name="line.94"></a>
+<span class="sourceLineNo">095</span> *<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * <h2>Concurrency</h2><a name="line.96"></a>
+<span class="sourceLineNo">097</span> * RSGroup state is kept locally in Maps. There is a rsgroup name to cached<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * RSGroupInfo Map at {@link #rsGroupMap} and a Map of tables to the name of the<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * rsgroup they belong too (in {@link #tableMap}). These Maps are persisted to the<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * hbase:rsgroup table (and cached in zk) on each modification.<a name="line.100"></a>
+<span class="sourceLineNo">101</span> *<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * <p>Mutations on state are synchronized but reads can continue without having<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * to wait on an instance monitor, mutations do wholesale replace of the Maps on<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * update -- Copy-On-Write; the local Maps of state are read-only, just-in-case<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * (see flushConfig).<a name="line.105"></a>
+<span class="sourceLineNo">106</span> *<a name="line.106"></a>
+<span class="sourceLineNo">107</span> * <p>Reads must not block else there is a danger we'll deadlock.<a name="line.107"></a>
+<span class="sourceLineNo">108</span> *<a name="line.108"></a>
+<span class="sourceLineNo">109</span> * <p>Clients of this class, the {@link RSGroupAdminEndpoint} for example, want to query and<a name="line.109"></a>
+<span class="sourceLineNo">110</span> * then act on the results of the query modifying cache in zookeeper without another thread<a name="line.110"></a>
+<span class="sourceLineNo">111</span> * making intermediate modifications. These clients synchronize on the 'this' instance so<a name="line.111"></a>
+<span class="sourceLineNo">112</span> * no other has access concurrently. Reads must be able to continue concurrently.<a name="line.112"></a>
+<span class="sourceLineNo">113</span> */<a name="line.113"></a>
+<span class="sourceLineNo">114</span>@InterfaceAudience.Private<a name="line.114"></a>
+<span class="sourceLineNo">115</span>final class RSGroupInfoManagerImpl implements RSGroupInfoManager {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> private static final Logger LOG = LoggerFactory.getLogger(RSGroupInfoManagerImpl.class);<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> /** Table descriptor for <code>hbase:rsgroup</code> catalog table */<a name="line.118"></a>
+<span class="sourceLineNo">119</span> private final static HTableDescriptor RSGROUP_TABLE_DESC;<a name="line.119"></a>
+<span class="sourceLineNo">120</span> static {<a name="line.120"></a>
+<span class="sourceLineNo">121</span> RSGROUP_TABLE_DESC = new HTableDescriptor(RSGROUP_TABLE_NAME);<a name="line.121"></a>
+<span class="sourceLineNo">122</span> RSGROUP_TABLE_DESC.addFamily(new HColumnDescriptor(META_FAMILY_BYTES));<a name="line.122"></a>
+<span class="sourceLineNo">123</span> RSGROUP_TABLE_DESC.setRegionSplitPolicyClassName(DisabledRegionSplitPolicy.class.getName());<a name="line.123"></a>
+<span class="sourceLineNo">124</span> try {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> RSGROUP_TABLE_DESC.addCoprocessor(<a name="line.125"></a>
+<span class="sourceLineNo">126</span> MultiRowMutationEndpoint.class.getName(),<a name="line.126"></a>
+<span class="sourceLineNo">127</span> null, Coprocessor.PRIORITY_SYSTEM, null);<a name="line.127"></a>
+<span class="sourceLineNo">128</span> } catch (IOException ex) {<a name="line.128"></a>
+<span class="sourceLineNo">129</span> throw new RuntimeException(ex);<a name="line.129"></a>
+<span class="sourceLineNo">130</span> }<a name="line.130"></a>
+<span class="sourceLineNo">131</span> }<a name="line.131"></a>
+<span class="sourceLineNo">132</span><a name="line.132"></a>
+<span class="sourceLineNo">133</span> // There two Maps are immutable and wholesale replaced on each modification<a name="line.133"></a>
+<span class="sourceLineNo">134</span> // so are safe to access concurrently. See class comment.<a name="line.134"></a>
+<span class="sourceLineNo">135</span> private volatile Map<String, RSGroupInfo> rsGroupMap = Collections.emptyMap();<a name="line.135"></a>
+<span class="sourceLineNo">136</span> private volatile Map<TableName, String> tableMap = Collections.emptyMap();<a name="line.136"></a>
+<span class="sourceLineNo">137</span><a name="line.137"></a>
+<span class="sourceLineNo">138</span> private final MasterServices masterServices;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> private Table rsGroupTable;<a name="line.139"></a>
+<span class="sourceLineNo">140</span> private final ClusterConnection conn;<a name="line.140"></a>
+<span class="sourceLineNo">141</span> private final ZKWatcher watcher;<a name="line.141"></a>
+<span class="sourceLineNo">142</span> private final RSGroupStartupWorker rsGroupStartupWorker = new RSGroupStartupWorker();<a name="line.142"></a>
+<span class="sourceLineNo">143</span> // contains list of groups that were last flushed to persistent store<a name="line.143"></a>
+<span class="sourceLineNo">144</span> private Set<String> prevRSGroups = new HashSet<>();<a name="line.144"></a>
+<span class="sourceLineNo">145</span> private final ServerEventsListenerThread serverEventsListenerThread =<a name="line.145"></a>
+<span class="sourceLineNo">146</span> new ServerEventsListenerThread();<a name="line.146"></a>
+<span class="sourceLineNo">147</span> private FailedOpenUpdaterThread failedOpenUpdaterThread;<a name="line.147"></a>
+<span class="sourceLineNo">148</span><a name="line.148"></a>
+<span class="sourceLineNo">149</span> private RSGroupInfoManagerImpl(MasterServices masterServices) throws IOException {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> this.masterServices = masterServices;<a name="line.150"></a>
+<span class="sourceLineNo">151</span> this.watcher = masterServices.getZooKeeper();<a name="line.151"></a>
+<span class="sourceLineNo">152</span> this.conn = masterServices.getClusterConnection();<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> private synchronized void init() throws IOException{<a name="line.155"></a>
+<span class="sourceLineNo">156</span> refresh();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> serverEventsListenerThread.start();<a name="line.157"></a>
+<span class="sourceLineNo">158</span> masterServices.getServerManager().registerListener(serverEventsListenerThread);<a name="line.158"></a>
+<span class="sourceLineNo">159</span> failedOpenUpdaterThread = new FailedOpenUpdaterThread(masterServices.getConfiguration());<a name="line.159"></a>
+<span class="sourceLineNo">160</span> failedOpenUpdaterThread.start();<a name="line.160"></a>
+<span class="sourceLineNo">161</span> masterServices.getServerManager().registerListener(failedOpenUpdaterThread);<a name="line.161"></a>
+<span class="sourceLineNo">162</span> }<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> static RSGroupInfoManager getInstance(MasterServices master) throws IOException {<a name="line.164"></a>
+<span class="sourceLineNo">165</span> RSGroupInfoManagerImpl instance = new RSGroupInfoManagerImpl(master);<a name="line.165"></a>
+<span class="sourceLineNo">166</span> instance.init();<a name="line.166"></a>
+<span class="sourceLineNo">167</span> return instance;<a name="line.167"></a>
+<span class="sourceLineNo">168</span> }<a name="line.168"></a>
+<span class="sourceLineNo">169</span><a name="line.169"></a>
+<span class="sourceLineNo">170</span> public void start(){<a name="line.170"></a>
+<span class="sourceLineNo">171</span> // create system table of rsgroup<a name="line.171"></a>
+<span class="sourceLineNo">172</span> rsGroupStartupWorker.start();<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> @Override<a name="line.175"></a>
+<span class="sourceLineNo">176</span> public synchronized void addRSGroup(RSGroupInfo rsGroupInfo) throws IOException {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> checkGroupName(rsGroupInfo.getName());<a name="line.177"></a>
+<span class="sourceLineNo">178</span> if (rsGroupMap.get(rsGroupInfo.getName()) != null ||<a name="line.178"></a>
+<span class="sourceLineNo">179</span> rsGroupInfo.getName().equals(RSGroupInfo.DEFAULT_GROUP)) {<a name="line.179"></a>
+<span class="sourceLineNo">180</span> throw new DoNotRetryIOException("Group already exists: "+ rsGroupInfo.getName());<a name="line.180"></a>
+<span class="sourceLineNo">181</span> }<a name="line.181"></a>
+<span class="sourceLineNo">182</span> Map<String, RSGroupInfo> newGroupMap = Maps.newHashMap(rsGroupMap);<a name="line.182"></a>
+<span class="sourceLineNo">183</span> newGroupMap.put(rsGroupInfo.getName(), rsGroupInfo);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> flushConfig(newGroupMap);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> }<a name="line.185"></a>
+<span class="sourceLineNo">186</span><a name="line.186"></a>
+<span class="sourceLineNo">187</span> private RSGroupInfo getRSGroupInfo(final String groupName) throws DoNotRetryIOException {<a name="line.187"></a>
+<span class="sourceLineNo">188</span> RSGroupInfo rsGroupInfo = getRSGroup(groupName);<a name="line.188"></a>
+<span class="sourceLineNo">189</span> if (rsGroupInfo == null) {<a name="line.189"></a>
+<span class="sourceLineNo">190</span> throw new DoNotRetryIOException("RSGroup " + groupName + " does not exist");<a name="line.190"></a>
+<span class="sourceLineNo">191</span> }<a name="line.191"></a>
+<span class="sourceLineNo">192</span> return rsGroupInfo;<a name="line.192"></a>
+<span class="sourceLineNo">193</span> }<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span> @Override<a name="line.195"></a>
+<span class="sourceLineNo">196</span> public synchronized Set<Address> moveServers(Set<Address> servers, String srcGroup,<a name="line.196"></a>
+<span class="sourceLineNo">197</span> String dstGroup) throws IOException {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> RSGroupInfo src = getRSGroupInfo(srcGroup);<a name="line.198"></a>
+<span class="sourceLineNo">199</span> RSGroupInfo dst = getRSGroupInfo(dstGroup);<a name="line.199"></a>
+<span class="sourceLineNo">200</span> // If destination is 'default' rsgroup, only add servers that are online. If not online, drop<a name="line.200"></a>
+<span class="sourceLineNo">201</span> // it. If not 'default' group, add server to 'dst' rsgroup EVEN IF IT IS NOT online (could be a<a name="line.201"></a>
+<span class="sourceLineNo">202</span> // rsgroup of dead servers that are to come back later).<a name="line.202"></a>
+<span class="sourceLineNo">203</span> Set<Address> onlineServers = dst.getName().equals(RSGroupInfo.DEFAULT_GROUP)?<a name="line.203"></a>
+<span class="sourceLineNo">204</span> Utility.getOnlineServers(this.masterServices): null;<a name="line.204"></a>
+<span class="sourceLineNo">205</span> for (Address el: servers) {<a name="line.205"></a>
+<span class="sourceLineNo">206</span> src.removeServer(el);<a name="line.206"></a>
+<span class="sourceLineNo">207</span> if (onlineServers != null) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> if (!onlineServers.contains(el)) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span> if (LOG.isDebugEnabled()) {<a name="line.209"></a>
+<span class="sourceLineNo">210</span> LOG.debug("Dropping " + el + " during move-to-default rsgroup because not online");<a name="line.210"></a>
+<span class="sourceLineNo">211</span> }<a name="line.211"></a>
+<span class="sourceLineNo">212</span> continue;<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> dst.addServer(el);<a name="line.215"></a>
+<span class="sourceLineNo">216</span> }<a name="line.216"></a>
+<span class="sourceLineNo">217</span> Map<String,RSGroupInfo> newGroupMap = Maps.newHashMap(rsGroupMap);<a name="line.217"></a>
+<span class="sourceLineNo">218</span> newGroupMap.put(src.getName(), src);<a name="line.218"></a>
+<span class="sourceLineNo">219</span> newGroupMap.put(dst.getName(), dst);<a name="line.219"></a>
+<span class="sourceLineNo">220</span> flushConfig(newGroupMap);<a name="line.220"></a>
+<span class="sourceLineNo">221</span> return dst.getServers();<a name="line.221"></a>
+<span class="sourceLineNo">222</span> }<a name="line.222"></a>
+<span class="sourceLineNo">223</span><a name="line.223"></a>
+<span class="sourceLineNo">224</span> @Override<a name="line.224"></a>
+<span class="sourceLineNo">225</span> public RSGroupInfo getRSGroupOfServer(Address serverHostPort) throws IOException {<a name="line.225"></a>
+<span class="sourceLineNo">226</span> for (RSGroupInfo info: rsGroupMap.values()) {<a name="line.226"></a>
+<span class="sourceLineNo">227</span> if (info.containsServer(serverHostPort)) {<a name="line.227"></a>
+<span class="sourceLineNo">228</span> return info;<a name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span> }<a name="line.230"></a>
+<span class="sourceLineNo">231</span> return null;<a name="line.231"></a>
+<span class="sourceLineNo">232</span> }<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span> @Override<a name="line.234"></a>
+<span class="sourceLineNo">235</span> public RSGroupInfo getRSGroup(String groupName) {<a name="line.235"></a>
+<span class="sourceLineNo">236</span> return rsGroupMap.get(groupName);<a name="line.236"></a>
+<span class="sourceLineNo">237</span> }<a name="line.237"></a>
+<span class="sourceLineNo">238</span><a name="line.238"></a>
+<span class="sourceLineNo">239</span> @Override<a name="line.239"></a>
+<span class="sourceLineNo">240</span> public String getRSGroupOfTable(TableName tableName) {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> return tableMap.get(tableName);<a name="line.241"></a>
+<span class="sourceLineNo">242</span> }<a name="line.242"></a>
+<span class="sourceLineNo">243</span><a name="line.243"></a>
+<span class="sourceLineNo">244</span> @Override<a name="line.244"></a>
+<span class="sourceLineNo">245</span> public synchronized void moveTables(Set<TableName> tableNames, String groupName)<a name="line.245"></a>
+<span class="sourceLineNo">246</span> throws IOException {<a name="line.246"></a>
+<span class="sourceLineNo">247</span> if (groupName != null && !rsGroupMap.containsKey(groupName)) {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> throw new DoNotRetryIOException("Group "+groupName+" does not exist");<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> Map<String,RSGroupInfo> newGroupMap = Maps.newHashMap(rsGroupMap);<a name="line.251"></a>
+<span class="sourceLineNo">252</span> for(TableName tableName: tableNames) {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> if (tableMap.containsKey(tableName)) {<a name="line.253"></a>
+<span class="sourceLineNo">254</span> RSGroupInfo src = new RSGroupInfo(newGroupMap.get(tableMap.get(tableName)));<a name="line.254"></a>
+<span class="sourceLineNo">255</span> src.removeTable(tableName);<a name="line.255"></a>
+<span class="sourceLineNo">256</span> newGroupMap.put(src.getName(), src);<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span> if(groupName != null) {<a name="line.258"></a>
+<span class="sourceLineNo">259</span> RSGroupInfo dst = new RSGroupInfo(newGroupMap.get(groupName));<a name="line.259"></a>
+<span class="sourceLineNo">260</span> dst.addTable(tableName);<a name="line.260"></a>
+<span class="sourceLineNo">261</span> newGroupMap.put(dst.getName(), dst);<a name="line.261"></a>
+<span class="sourceLineNo">262</span> }<a name="line.262"></a>
+<span class="sourceLineNo">263</span> }<a name="line.263"></a>
+<span class="sourceLineNo">264</span> flushConfig(newGroupMap);<a name="line.264"></a>
+<span class="sourceLineNo">265</span> }<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span> @Override<a name="line.267"></a>
+<span class="sourceLineNo">268</span> public synchronized void removeRSGroup(String groupName) throws IOException {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> if (!rsGroupMap.containsKey(groupName) || groupName.equals(RSGroupInfo.DEFAULT_GROUP)) {<a name="line.269"></a>
+<span class="sourceLineNo">270</span> throw new DoNotRetryIOException("Group " + groupName + " does not exist or is a reserved "<a name="line.270"></a>
+<span class="sourceLineNo">271</span> + "group");<a name="line.271"></a>
+<span class="sourceLineNo">272</span> }<a name="line.272"></a>
+<span class="sourceLineNo">273</span> Map<String,RSGroupInfo> newGroupMap = Maps.newHashMap(rsGroupMap);<a name="line.273"></a>
+<span class="sourceLineNo">274</span> newGroupMap.remove(groupName);<a name="line.274"></a>
+<span class="sourceLineNo">275</span> flushConfig(newGroupMap);<a name="line.275"></a>
+<span class="sourceLineNo">276</span> }<a name="line.276"></a>
+<span class="sourceLineNo">277</span><a name="line.277"></a>
+<span class="sourceLineNo">278</span> @Override<a name="line.278"></a>
+<span class="sourceLineNo">279</span> public List<RSGroupInfo> listRSGroups() {<a name="line.279"></a>
+<span class="sourceLineNo">280</span> return Lists.newLinkedList(rsGroupMap.values());<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> @Override<a name="line.283"></a>
+<span class="sourceLineNo">284</span> public boolean isOnline() {<a name="line.284"></a>
+<span class="sourceLineNo">285</span> return rsGroupStartupWorker.isOnline();<a name="line.285"></a>
+<span class="sourceLineNo">286</span> }<a name="line.286"></a>
+<span class="sourceLineNo">287</span><a name="line.287"></a>
+<span class="sourceLineNo">288</span> @Override<a name="line.288"></a>
+<span class="sourceLineNo">289</span> public void moveServersAndTables(Set<Address> servers, Set<TableName> tables,<a name="line.289"></a>
+<span class="sourceLineNo">290</span> String srcGroup, String dstGroup) throws IOException {<a name="line.290"></a>
+<span class="sourceLineNo">291</span> //get server's group<a name="line.291"></a>
+<span class="sourceLineNo">292</span> RSGroupInfo srcGroupInfo = getRSGroupInfo(srcGroup);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> RSGroupInfo dstGroupInfo = getRSGroupInfo(dstGroup);<a name="line.293"></a>
+<span class="sourceLineNo">294</span><a name="line.294"></a>
+<span class="sourceLineNo">295</span> //move servers<a name="line.295"></a>
+<span class="sourceLineNo">296</span> for (Address el: servers) {<a name="line.296"></a>
+<span class="sourceLineNo">297</span> srcGroupInfo.removeServer(el);<a name="line.297"></a>
+<span class="sourceLineNo">298</span> dstGroupInfo.addServer(el);<a name="line.298"></a>
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+<span class="sourceLineNo">312</span><a name="line.312"></a>
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+<span class="sourceLineNo">337</span> }<a name="line.337"></a>
+<span class="sourceLineNo">338</span><a name="line.338"></a>
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+<span class="sourceLineNo">346</span> return rsGroupInfoList;<a name="line.346"></a>
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+<span class="sourceLineNo">348</span><a name="line.348"></a>
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+<span class="sourceLineNo">363</span> ByteArrayInputStream bis = new ByteArrayInputStream(<a name="line.363"></a>
+<span class="sourceLineNo">364</span> data, ProtobufUtil.lengthOfPBMagic(), data.length);<a name="line.364"></a>
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+<span class="sourceLineNo">376</span><a name="line.376"></a>
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+<span class="sourceLineNo">378</span> public void refresh() throws IOException {<a name="line.378"></a>
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<span class="sourceLineNo">441</span> }<a name="line.441"></a>
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<TRUNCATED>