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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 com.google.errorprone.annotations.RestrictedApi;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.hadoop.hbase.HConstants;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.ServerName;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.zookeeper.KeeperException;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.slf4j.Logger;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.slf4j.LoggerFactory;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos.MetaRegionServer;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>/**<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * Utility class to perform operation (get/wait for/verify/set/delete) on znode in ZooKeeper which<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * keeps hbase:meta region server location.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * <p/><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * Stateless class with a bunch of static methods. Doesn't manage resources passed in (e.g.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * Connection, ZKWatcher etc).<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * <p/><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Meta region location is set by <code>RegionServerServices</code>. This class doesn't use ZK<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * watchers, rather accesses ZK directly.<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * <p/><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * TODO: rewrite using RPC calls to master to find out about hbase:meta.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>@InterfaceAudience.Private<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>public final class MetaTableLocator {<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> private static final Logger LOG = LoggerFactory.getLogger(MetaTableLocator.class);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private MetaTableLocator() {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> }<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> /**<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * Gets the meta region location, if available. Does not block.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * @param zkw zookeeper connection to use<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * @return server name or null if we failed to get the data.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> @RestrictedApi(explanation = "Should only be called in tests or ZKUtil", link = "",<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> allowedOnPath = ".*/src/test/.*|.*/ZKDump\\.java")<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public static ServerName getMetaRegionLocation(final ZKWatcher zkw) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> try {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> RegionState state = getMetaRegionState(zkw);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> return state.isOpened() ? state.getServerName() : null;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> } catch (KeeperException ke) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> return null;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> }<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> /**<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Gets the meta region location, if available. Does not block.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * operation<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * @param replicaId the ID of the replica<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * @return server name<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> @RestrictedApi(explanation = "Should only be called in self or ZKUtil", link = "",<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> allowedOnPath = ".*(MetaTableLocator|ZKDump)\\.java")<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> public static ServerName getMetaRegionLocation(final ZKWatcher zkw, int replicaId) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> try {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> RegionState state = getMetaRegionState(zkw, replicaId);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> return state.isOpened() ? state.getServerName() : null;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> } catch (KeeperException ke) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> return null;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> }<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> /**<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * Gets the meta region location, if available, and waits for up to the specified timeout if not<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * immediately available. Given the zookeeper notification could be delayed, we will try to get<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * the latest data.<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * operation<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * @param timeout maximum time to wait, in millis<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * if none available<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @throws InterruptedException if interrupted while waiting<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> */<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> allowedOnPath = ".*/src/test/.*")<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> public static ServerName waitMetaRegionLocation(ZKWatcher zkw, long timeout)<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> return waitMetaRegionLocation(zkw, RegionInfo.DEFAULT_REPLICA_ID, timeout);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> /**<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * Gets the meta region location, if available, and waits for up to the specified timeout if not<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * immediately available. Given the zookeeper notification could be delayed, we will try to get<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * the latest data.<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * operation<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * @param replicaId the ID of the replica<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * @param timeout maximum time to wait, in millis<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * if none available<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> */<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> private static ServerName waitMetaRegionLocation(ZKWatcher zkw, int replicaId, long timeout)<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> try {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> if (ZKUtil.checkExists(zkw, zkw.getZNodePaths().baseZNode) == -1) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> String errorMsg = "Check the value configured in 'zookeeper.znode.parent'. "<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> + "There could be a mismatch with the one configured in the master.";<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> LOG.error(errorMsg);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> throw new IllegalArgumentException(errorMsg);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> } catch (KeeperException e) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> throw new IllegalStateException("KeeperException while trying to check baseZNode:", e);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> ServerName sn = blockUntilAvailable(zkw, replicaId, timeout);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> if (sn == null) {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> throw new NotAllMetaRegionsOnlineException("Timed out; " + timeout + "ms");<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span><a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return sn;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> /**<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * @param zookeeper zookeeper reference<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * @param serverName The server hosting <code>hbase:meta</code><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * @param state The region transition state<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * @throws KeeperException unexpected zookeeper exception<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> allowedOnPath = ".*/src/test/.*")<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName,<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> RegionState.State state) throws KeeperException {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> setMetaLocation(zookeeper, serverName, RegionInfo.DEFAULT_REPLICA_ID, state);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> /**<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> * @param zookeeper reference to the {@link ZKWatcher} which also contains configuration and<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * operation<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * @param serverName the name of the server<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * @param replicaId the ID of the replica<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * @param state the state of the region<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> */<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName, int replicaId,<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> RegionState.State state) throws KeeperException {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if (serverName == null) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> LOG.warn("Tried to set null ServerName in hbase:meta; skipping -- ServerName required");<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> return;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> LOG.info("Setting hbase:meta replicaId={} location in ZooKeeper as {}, state={}", replicaId,<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> serverName, state);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> // Make the MetaRegionServer pb and then get its bytes and save this as<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // the znode content.<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> MetaRegionServer pbrsr =<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> MetaRegionServer.newBuilder().setServer(ProtobufUtil.toServerName(serverName))<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> .setRpcVersion(HConstants.RPC_CURRENT_VERSION).setState(state.convert()).build();<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> try {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> ZKUtil.setData(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId), data);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> } catch (KeeperException.NoNodeException nne) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> LOG.debug("hbase:meta region location doesn't exist, create it");<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> } else {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> LOG.debug(<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> "hbase:meta region location doesn't exist for replicaId=" + replicaId + ", create it");<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> ZKUtil.createAndWatch(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId),<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> data);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<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> /**<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * Load the meta region state from the meta server ZNode.<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> */<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> @RestrictedApi(explanation = "Should only be called in self or tests", link = "",<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> allowedOnPath = ".*/src/test/.*|.*/MetaTableLocator\\.java")<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> public static RegionState getMetaRegionState(ZKWatcher zkw) throws KeeperException {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return getMetaRegionState(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> /**<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * Load the meta region state from the meta region server ZNode.<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * operation<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * @param replicaId the ID of the replica<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> public static RegionState getMetaRegionState(ZKWatcher zkw, int replicaId)<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> throws KeeperException {<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> RegionState regionState = null;<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> try {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> byte[] data = ZKUtil.getData(zkw, zkw.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> regionState = ProtobufUtil.parseMetaRegionStateFrom(data, replicaId);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> } catch (DeserializationException e) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> throw ZKUtil.convert(e);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> } catch (InterruptedException e) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> Thread.currentThread().interrupt();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> }<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> return regionState;<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<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> * Deletes the location of <code>hbase:meta</code> in ZooKeeper.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * @param zookeeper zookeeper reference<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * @throws KeeperException unexpected zookeeper exception<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> */<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> allowedOnPath = ".*/src/test/.*")<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> public static void deleteMetaLocation(ZKWatcher zookeeper) throws KeeperException {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> deleteMetaLocation(zookeeper, RegionInfo.DEFAULT_REPLICA_ID);<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> public static void deleteMetaLocation(ZKWatcher zookeeper, int replicaId) throws KeeperException {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> LOG.info("Deleting hbase:meta region location in ZooKeeper");<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> } else {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> LOG.info("Deleting hbase:meta for {} region location in ZooKeeper", replicaId);<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> try {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> // Just delete the node. Don't need any watches.<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> ZKUtil.deleteNode(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> } catch (KeeperException.NoNodeException nne) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> // Has already been deleted<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> * Wait until the meta region is available and is not in transition.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * constants<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * @param replicaId the ID of the replica<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * @param timeout maximum time to wait in millis<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * @return ServerName or null if we timed out.<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> */<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> private static ServerName blockUntilAvailable(final ZKWatcher zkw, int replicaId,<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> final long timeout) throws InterruptedException {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> if (timeout < 0) {<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> throw new IllegalArgumentException();<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> if (zkw == null) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> throw new IllegalArgumentException();<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> long startTime = EnvironmentEdgeManager.currentTime();<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> ServerName sn = null;<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> while (true) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> sn = getMetaRegionLocation(zkw, replicaId);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> if (<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> sn != null || (EnvironmentEdgeManager.currentTime() - startTime)<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> > timeout - HConstants.SOCKET_RETRY_WAIT_MS<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> ) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> break;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> return sn;<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span>}<a name="line.281"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
