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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.zookeeper;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.ArrayList;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Collections;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.List;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.conf.Configuration;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HConstants;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.ServerName;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.zookeeper.KeeperException;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.slf4j.Logger;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.slf4j.LoggerFactory;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos.MetaRegionServer;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span>/**<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * Utility class to perform operation (get/wait for/verify/set/delete) on znode in ZooKeeper which<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * keeps hbase:meta region server location.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * <p/><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * Stateless class with a bunch of static methods. Doesn't manage resources passed in (e.g.<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * Connection, ZKWatcher etc).<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * <p/><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * Meta region location is set by <code>RegionServerServices</code>. This class doesn't use ZK<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * watchers, rather accesses ZK directly.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * <p/><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * TODO: rewrite using RPC calls to master to find out about hbase:meta.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>@InterfaceAudience.Private<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>public final class MetaTableLocator {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private static final Logger LOG = LoggerFactory.getLogger(MetaTableLocator.class);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private MetaTableLocator() {<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> /**<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * @param zkw ZooKeeper watcher to be used<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * @return meta table regions and their locations.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> public static List<Pair<RegionInfo, ServerName>> getMetaRegionsAndLocations(ZKWatcher zkw) {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> return getMetaRegionsAndLocations(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> /**<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Gets the meta regions and their locations for the given path and replica ID.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> *<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * @param replicaId the ID of the replica<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @return meta table regions and their locations.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> */<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> public static List<Pair<RegionInfo, ServerName>> getMetaRegionsAndLocations(ZKWatcher zkw,<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> int replicaId) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> ServerName serverName = getMetaRegionLocation(zkw, replicaId);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> List<Pair<RegionInfo, ServerName>> list = new ArrayList<>(1);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> list.add(new Pair<>(RegionReplicaUtil.getRegionInfoForReplica(<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId), serverName));<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> return list;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> /**<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Gets the meta regions for the given path with the default replica ID.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> *<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * @param zkw ZooKeeper watcher to be used<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * @return List of meta regions<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> */<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> public static List<RegionInfo> getMetaRegions(ZKWatcher zkw) {<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> return getMetaRegions(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> /**<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * Gets the meta regions for the given path and replica ID.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * @param replicaId the ID of the replica<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * @return List of meta regions<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> */<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> public static List<RegionInfo> getMetaRegions(ZKWatcher zkw, int replicaId) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> List<Pair<RegionInfo, ServerName>> result;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> result = getMetaRegionsAndLocations(zkw, replicaId);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> return getListOfRegionInfos(result);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> private static List<RegionInfo> getListOfRegionInfos(<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> final List<Pair<RegionInfo, ServerName>> pairs) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> if (pairs == null || pairs.isEmpty()) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> return Collections.emptyList();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> List<RegionInfo> result = new ArrayList<>(pairs.size());<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> for (Pair<RegionInfo, ServerName> pair : pairs) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> result.add(pair.getFirst());<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> return result;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> /**<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * Gets the meta region location, if available. Does not block.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> * @param zkw zookeeper connection to use<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * @return server name or null if we failed to get the data.<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> */<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public static ServerName getMetaRegionLocation(final ZKWatcher zkw) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> try {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> RegionState state = getMetaRegionState(zkw);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> return state.isOpened() ? state.getServerName() : null;<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> } catch (KeeperException ke) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return null;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<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> * Gets the meta region location, if available. Does not block.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @param replicaId the ID of the replica<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * @return server name<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> */<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> public static ServerName getMetaRegionLocation(final ZKWatcher zkw, int replicaId) {<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> try {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> RegionState state = getMetaRegionState(zkw, replicaId);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> return state.isOpened() ? state.getServerName() : null;<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> } catch (KeeperException ke) {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> return null;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> /**<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * Gets the meta region location, if available, and waits for up to the specified timeout if not<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * immediately available. Given the zookeeper notification could be delayed, we will try to get<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * the latest data.<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> * @param timeout maximum time to wait, in millis<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * if none available<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @throws InterruptedException if interrupted while waiting<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> */<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> public static ServerName waitMetaRegionLocation(ZKWatcher zkw, long timeout)<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> return waitMetaRegionLocation(zkw, RegionInfo.DEFAULT_REPLICA_ID, timeout);<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> /**<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * Gets the meta region location, if available, and waits for up to the specified timeout if not<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * immediately available. Given the zookeeper notification could be delayed, we will try to get<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * the latest data.<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * @param replicaId the ID of the replica<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * @param timeout maximum time to wait, in millis<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * if none available<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> */<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> public static ServerName waitMetaRegionLocation(ZKWatcher zkw, int replicaId, long timeout)<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> try {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> if (ZKUtil.checkExists(zkw, zkw.getZNodePaths().baseZNode) == -1) {<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> String errorMsg = "Check the value configured in 'zookeeper.znode.parent'. " +<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> "There could be a mismatch with the one configured in the master.";<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> LOG.error(errorMsg);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> throw new IllegalArgumentException(errorMsg);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> } catch (KeeperException e) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> throw new IllegalStateException("KeeperException while trying to check baseZNode:", e);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> ServerName sn = blockUntilAvailable(zkw, replicaId, timeout);<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> if (sn == null) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> throw new NotAllMetaRegionsOnlineException("Timed out; " + timeout + "ms");<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> return sn;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> /**<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * specified server address.<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * @param zookeeper zookeeper reference<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * @param serverName The server hosting <code>hbase:meta</code><a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * @param state The region transition state<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * @throws KeeperException unexpected zookeeper exception<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> */<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public static void setMetaLocation(ZKWatcher zookeeper,<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> ServerName serverName, RegionState.State state) throws KeeperException {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> setMetaLocation(zookeeper, serverName, RegionInfo.DEFAULT_REPLICA_ID, state);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> /**<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * @param zookeeper reference to the {@link ZKWatcher} which also contains configuration and<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * operation<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * @param serverName the name of the server<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * @param replicaId the ID of the replica<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> * @param state the state of the region<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> */<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName, int replicaId,<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> RegionState.State state) throws KeeperException {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> if (serverName == null) {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> LOG.warn("Tried to set null ServerName in hbase:meta; skipping -- ServerName required");<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> return;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> LOG.info("Setting hbase:meta replicaId={} location in ZooKeeper as {}, state={}", replicaId,<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> serverName, state);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> // Make the MetaRegionServer pb and then get its bytes and save this as<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> // the znode content.<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> MetaRegionServer pbrsr = MetaRegionServer.newBuilder()<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> .setServer(ProtobufUtil.toServerName(serverName))<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> .setRpcVersion(HConstants.RPC_CURRENT_VERSION)<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> .setState(state.convert()).build();<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> try {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> ZKUtil.setData(zookeeper,<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> zookeeper.getZNodePaths().getZNodeForReplica(replicaId), data);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> } catch(KeeperException.NoNodeException nne) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> LOG.debug("hbase:meta region location doesn't exist, create it");<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> } else {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> LOG.debug("hbase:meta region location doesn't exist for replicaId=" + replicaId +<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> ", create it");<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> ZKUtil.createAndWatch(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId),<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> data);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span><a name="line.247"></a> |
| <span class="sourceLineNo">248</span> /**<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * Load the meta region state from the meta server ZNode.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> */<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> public static RegionState getMetaRegionState(ZKWatcher zkw) throws KeeperException {<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> return getMetaRegionState(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span><a name="line.254"></a> |
| <span class="sourceLineNo">255</span> /**<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * Load the meta region state from the meta region server ZNode.<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> *<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @param replicaId the ID of the replica<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * @return regionstate<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> */<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> public static RegionState getMetaRegionState(ZKWatcher zkw, int replicaId)<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> throws KeeperException {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> RegionState regionState = null;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> try {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> byte[] data = ZKUtil.getData(zkw, zkw.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> regionState = ProtobufUtil.parseMetaRegionStateFrom(data, replicaId);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> } catch (DeserializationException e) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> throw ZKUtil.convert(e);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> } catch (InterruptedException e) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> Thread.currentThread().interrupt();<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> return regionState;<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> }<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> * Deletes the location of <code>hbase:meta</code> in ZooKeeper.<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * @param zookeeper zookeeper reference<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * @throws KeeperException unexpected zookeeper exception<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> */<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> public static void deleteMetaLocation(ZKWatcher zookeeper)<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> throws KeeperException {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> deleteMetaLocation(zookeeper, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> }<a name="line.285"></a> |
| <span class="sourceLineNo">286</span><a name="line.286"></a> |
| <span class="sourceLineNo">287</span> public static void deleteMetaLocation(ZKWatcher zookeeper, int replicaId)<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> throws KeeperException {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> LOG.info("Deleting hbase:meta region location in ZooKeeper");<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> } else {<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> LOG.info("Deleting hbase:meta for {} region location in ZooKeeper", replicaId);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> try {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> // Just delete the node. Don't need any watches.<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> ZKUtil.deleteNode(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> } catch(KeeperException.NoNodeException nne) {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // Has already been deleted<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> }<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> /**<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * Wait until the primary meta region is available. Get the secondary locations as well but don't<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> * block for those.<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> *<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> * @param timeout maximum time to wait in millis<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> * @param conf the {@link Configuration} to use<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * @return ServerName or null if we timed out.<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> */<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> public static List<ServerName> blockUntilAvailable(final ZKWatcher zkw, final long timeout,<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> Configuration conf) throws InterruptedException {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> int numReplicasConfigured = 1;<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> List<ServerName> servers = new ArrayList<>();<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> // Make the blocking call first so that we do the wait to know<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> // the znodes are all in place or timeout.<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> ServerName server = blockUntilAvailable(zkw, timeout);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> if (server == null) {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> return null;<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> }<a name="line.322"></a> |
| <span class="sourceLineNo">323</span><a name="line.323"></a> |
| <span class="sourceLineNo">324</span> servers.add(server);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span><a name="line.325"></a> |
| <span class="sourceLineNo">326</span> try {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> List<String> metaReplicaNodes = zkw.getMetaReplicaNodes();<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> numReplicasConfigured = metaReplicaNodes.size();<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> } catch (KeeperException e) {<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> LOG.warn("Got ZK exception {}", e);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> for (int replicaId = 1; replicaId < numReplicasConfigured; replicaId++) {<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> // return all replica locations for the meta<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> servers.add(getMetaRegionLocation(zkw, replicaId));<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> return servers;<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span> /**<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> * Wait until the meta region is available and is not in transition.<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * @param zkw zookeeper connection to use<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> * @param timeout maximum time to wait, in millis<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> * @return ServerName or null if we timed out.<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> */<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> public static ServerName blockUntilAvailable(final ZKWatcher zkw, final long timeout)<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> throws InterruptedException {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> return blockUntilAvailable(zkw, RegionInfo.DEFAULT_REPLICA_ID, timeout);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span><a name="line.350"></a> |
| <span class="sourceLineNo">351</span> /**<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> * Wait until the meta region is available and is not in transition.<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and constants<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> * @param replicaId the ID of the replica<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> * @param timeout maximum time to wait in millis<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> * @return ServerName or null if we timed out.<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> */<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> public static ServerName blockUntilAvailable(final ZKWatcher zkw, int replicaId,<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> final long timeout) throws InterruptedException {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> if (timeout < 0) {<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> throw new IllegalArgumentException();<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> }<a name="line.363"></a> |
| <span class="sourceLineNo">364</span><a name="line.364"></a> |
| <span class="sourceLineNo">365</span> if (zkw == null) {<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> throw new IllegalArgumentException();<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<a name="line.367"></a> |
| <span class="sourceLineNo">368</span><a name="line.368"></a> |
| <span class="sourceLineNo">369</span> long startTime = System.currentTimeMillis();<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> ServerName sn = null;<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> while (true) {<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> sn = getMetaRegionLocation(zkw, replicaId);<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> if (sn != null ||<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> (System.currentTimeMillis() - startTime) > timeout - HConstants.SOCKET_RETRY_WAIT_MS) {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> break;<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> }<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> return sn;<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> }<a name="line.380"></a> |
| <span class="sourceLineNo">381</span>}<a name="line.381"></a> |
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| </html> |
