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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.zookeeper;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import com.google.errorprone.annotations.RestrictedApi;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.exceptions.DeserializationException;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.master.RegionState;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.zookeeper.KeeperException;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.slf4j.Logger;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">032</span><span id="line-32"></span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos.MetaRegionServer;</span> |
| <span class="source-line-no">035</span><span id="line-35"></span> |
| <span class="source-line-no">036</span><span id="line-36">/**</span> |
| <span class="source-line-no">037</span><span id="line-37"> * Utility class to perform operation (get/wait for/verify/set/delete) on znode in ZooKeeper which</span> |
| <span class="source-line-no">038</span><span id="line-38"> * keeps hbase:meta region server location.</span> |
| <span class="source-line-no">039</span><span id="line-39"> * <p/></span> |
| <span class="source-line-no">040</span><span id="line-40"> * Stateless class with a bunch of static methods. Doesn't manage resources passed in (e.g.</span> |
| <span class="source-line-no">041</span><span id="line-41"> * Connection, ZKWatcher etc).</span> |
| <span class="source-line-no">042</span><span id="line-42"> * <p/></span> |
| <span class="source-line-no">043</span><span id="line-43"> * Meta region location is set by <code>RegionServerServices</code>. This class doesn't use ZK</span> |
| <span class="source-line-no">044</span><span id="line-44"> * watchers, rather accesses ZK directly.</span> |
| <span class="source-line-no">045</span><span id="line-45"> * <p/></span> |
| <span class="source-line-no">046</span><span id="line-46"> * TODO: rewrite using RPC calls to master to find out about hbase:meta.</span> |
| <span class="source-line-no">047</span><span id="line-47"> */</span> |
| <span class="source-line-no">048</span><span id="line-48">@InterfaceAudience.Private</span> |
| <span class="source-line-no">049</span><span id="line-49">public final class MetaTableLocator {</span> |
| <span class="source-line-no">050</span><span id="line-50"> private static final Logger LOG = LoggerFactory.getLogger(MetaTableLocator.class);</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> private MetaTableLocator() {</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> /**</span> |
| <span class="source-line-no">056</span><span id="line-56"> * Gets the meta region location, if available. Does not block.</span> |
| <span class="source-line-no">057</span><span id="line-57"> * @param zkw zookeeper connection to use</span> |
| <span class="source-line-no">058</span><span id="line-58"> * @return server name or null if we failed to get the data.</span> |
| <span class="source-line-no">059</span><span id="line-59"> */</span> |
| <span class="source-line-no">060</span><span id="line-60"> @RestrictedApi(explanation = "Should only be called in tests or ZKUtil", link = "",</span> |
| <span class="source-line-no">061</span><span id="line-61"> allowedOnPath = ".*/src/test/.*|.*/ZKDump\\.java")</span> |
| <span class="source-line-no">062</span><span id="line-62"> public static ServerName getMetaRegionLocation(final ZKWatcher zkw) {</span> |
| <span class="source-line-no">063</span><span id="line-63"> try {</span> |
| <span class="source-line-no">064</span><span id="line-64"> RegionState state = getMetaRegionState(zkw);</span> |
| <span class="source-line-no">065</span><span id="line-65"> return state.isOpened() ? state.getServerName() : null;</span> |
| <span class="source-line-no">066</span><span id="line-66"> } catch (KeeperException ke) {</span> |
| <span class="source-line-no">067</span><span id="line-67"> return null;</span> |
| <span class="source-line-no">068</span><span id="line-68"> }</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> /**</span> |
| <span class="source-line-no">072</span><span id="line-72"> * Gets the meta region location, if available. Does not block.</span> |
| <span class="source-line-no">073</span><span id="line-73"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">074</span><span id="line-74"> * operation</span> |
| <span class="source-line-no">075</span><span id="line-75"> * @param replicaId the ID of the replica</span> |
| <span class="source-line-no">076</span><span id="line-76"> * @return server name</span> |
| <span class="source-line-no">077</span><span id="line-77"> */</span> |
| <span class="source-line-no">078</span><span id="line-78"> @RestrictedApi(explanation = "Should only be called in self or ZKUtil", link = "",</span> |
| <span class="source-line-no">079</span><span id="line-79"> allowedOnPath = ".*(MetaTableLocator|ZKDump)\\.java")</span> |
| <span class="source-line-no">080</span><span id="line-80"> public static ServerName getMetaRegionLocation(final ZKWatcher zkw, int replicaId) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> try {</span> |
| <span class="source-line-no">082</span><span id="line-82"> RegionState state = getMetaRegionState(zkw, replicaId);</span> |
| <span class="source-line-no">083</span><span id="line-83"> return state.isOpened() ? state.getServerName() : null;</span> |
| <span class="source-line-no">084</span><span id="line-84"> } catch (KeeperException ke) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> return null;</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88"></span> |
| <span class="source-line-no">089</span><span id="line-89"> /**</span> |
| <span class="source-line-no">090</span><span id="line-90"> * Gets the meta region location, if available, and waits for up to the specified timeout if not</span> |
| <span class="source-line-no">091</span><span id="line-91"> * immediately available. Given the zookeeper notification could be delayed, we will try to get</span> |
| <span class="source-line-no">092</span><span id="line-92"> * the latest data.</span> |
| <span class="source-line-no">093</span><span id="line-93"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">094</span><span id="line-94"> * operation</span> |
| <span class="source-line-no">095</span><span id="line-95"> * @param timeout maximum time to wait, in millis</span> |
| <span class="source-line-no">096</span><span id="line-96"> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null</span> |
| <span class="source-line-no">097</span><span id="line-97"> * if none available</span> |
| <span class="source-line-no">098</span><span id="line-98"> * @throws InterruptedException if interrupted while waiting</span> |
| <span class="source-line-no">099</span><span id="line-99"> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online</span> |
| <span class="source-line-no">100</span><span id="line-100"> */</span> |
| <span class="source-line-no">101</span><span id="line-101"> @RestrictedApi(explanation = "Should only be called in tests", link = "",</span> |
| <span class="source-line-no">102</span><span id="line-102"> allowedOnPath = ".*/src/test/.*")</span> |
| <span class="source-line-no">103</span><span id="line-103"> public static ServerName waitMetaRegionLocation(ZKWatcher zkw, long timeout)</span> |
| <span class="source-line-no">104</span><span id="line-104"> throws InterruptedException, NotAllMetaRegionsOnlineException {</span> |
| <span class="source-line-no">105</span><span id="line-105"> return waitMetaRegionLocation(zkw, RegionInfo.DEFAULT_REPLICA_ID, timeout);</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> /**</span> |
| <span class="source-line-no">109</span><span id="line-109"> * Gets the meta region location, if available, and waits for up to the specified timeout if not</span> |
| <span class="source-line-no">110</span><span id="line-110"> * immediately available. Given the zookeeper notification could be delayed, we will try to get</span> |
| <span class="source-line-no">111</span><span id="line-111"> * the latest data.</span> |
| <span class="source-line-no">112</span><span id="line-112"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">113</span><span id="line-113"> * operation</span> |
| <span class="source-line-no">114</span><span id="line-114"> * @param replicaId the ID of the replica</span> |
| <span class="source-line-no">115</span><span id="line-115"> * @param timeout maximum time to wait, in millis</span> |
| <span class="source-line-no">116</span><span id="line-116"> * @return server name for server hosting meta region formatted as per {@link ServerName}, or null</span> |
| <span class="source-line-no">117</span><span id="line-117"> * if none available</span> |
| <span class="source-line-no">118</span><span id="line-118"> * @throws InterruptedException if waiting for the socket operation fails</span> |
| <span class="source-line-no">119</span><span id="line-119"> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online</span> |
| <span class="source-line-no">120</span><span id="line-120"> */</span> |
| <span class="source-line-no">121</span><span id="line-121"> private static ServerName waitMetaRegionLocation(ZKWatcher zkw, int replicaId, long timeout)</span> |
| <span class="source-line-no">122</span><span id="line-122"> throws InterruptedException, NotAllMetaRegionsOnlineException {</span> |
| <span class="source-line-no">123</span><span id="line-123"> try {</span> |
| <span class="source-line-no">124</span><span id="line-124"> if (ZKUtil.checkExists(zkw, zkw.getZNodePaths().baseZNode) == -1) {</span> |
| <span class="source-line-no">125</span><span id="line-125"> String errorMsg = "Check the value configured in 'zookeeper.znode.parent'. "</span> |
| <span class="source-line-no">126</span><span id="line-126"> + "There could be a mismatch with the one configured in the master.";</span> |
| <span class="source-line-no">127</span><span id="line-127"> LOG.error(errorMsg);</span> |
| <span class="source-line-no">128</span><span id="line-128"> throw new IllegalArgumentException(errorMsg);</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"> } catch (KeeperException e) {</span> |
| <span class="source-line-no">131</span><span id="line-131"> throw new IllegalStateException("KeeperException while trying to check baseZNode:", e);</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"> ServerName sn = blockUntilAvailable(zkw, replicaId, timeout);</span> |
| <span class="source-line-no">134</span><span id="line-134"></span> |
| <span class="source-line-no">135</span><span id="line-135"> if (sn == null) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> throw new NotAllMetaRegionsOnlineException("Timed out; " + timeout + "ms");</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"></span> |
| <span class="source-line-no">139</span><span id="line-139"> return sn;</span> |
| <span class="source-line-no">140</span><span id="line-140"> }</span> |
| <span class="source-line-no">141</span><span id="line-141"></span> |
| <span class="source-line-no">142</span><span id="line-142"> /**</span> |
| <span class="source-line-no">143</span><span id="line-143"> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.</span> |
| <span class="source-line-no">144</span><span id="line-144"> * @param zookeeper zookeeper reference</span> |
| <span class="source-line-no">145</span><span id="line-145"> * @param serverName The server hosting <code>hbase:meta</code></span> |
| <span class="source-line-no">146</span><span id="line-146"> * @param state The region transition state</span> |
| <span class="source-line-no">147</span><span id="line-147"> * @throws KeeperException unexpected zookeeper exception</span> |
| <span class="source-line-no">148</span><span id="line-148"> */</span> |
| <span class="source-line-no">149</span><span id="line-149"> @RestrictedApi(explanation = "Should only be called in tests", link = "",</span> |
| <span class="source-line-no">150</span><span id="line-150"> allowedOnPath = ".*/src/test/.*")</span> |
| <span class="source-line-no">151</span><span id="line-151"> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName,</span> |
| <span class="source-line-no">152</span><span id="line-152"> RegionState.State state) throws KeeperException {</span> |
| <span class="source-line-no">153</span><span id="line-153"> setMetaLocation(zookeeper, serverName, RegionInfo.DEFAULT_REPLICA_ID, state);</span> |
| <span class="source-line-no">154</span><span id="line-154"> }</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> /**</span> |
| <span class="source-line-no">157</span><span id="line-157"> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.</span> |
| <span class="source-line-no">158</span><span id="line-158"> * @param zookeeper reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">159</span><span id="line-159"> * operation</span> |
| <span class="source-line-no">160</span><span id="line-160"> * @param serverName the name of the server</span> |
| <span class="source-line-no">161</span><span id="line-161"> * @param replicaId the ID of the replica</span> |
| <span class="source-line-no">162</span><span id="line-162"> * @param state the state of the region</span> |
| <span class="source-line-no">163</span><span id="line-163"> * @throws KeeperException if a ZooKeeper operation fails</span> |
| <span class="source-line-no">164</span><span id="line-164"> */</span> |
| <span class="source-line-no">165</span><span id="line-165"> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName, int replicaId,</span> |
| <span class="source-line-no">166</span><span id="line-166"> RegionState.State state) throws KeeperException {</span> |
| <span class="source-line-no">167</span><span id="line-167"> if (serverName == null) {</span> |
| <span class="source-line-no">168</span><span id="line-168"> LOG.warn("Tried to set null ServerName in hbase:meta; skipping -- ServerName required");</span> |
| <span class="source-line-no">169</span><span id="line-169"> return;</span> |
| <span class="source-line-no">170</span><span id="line-170"> }</span> |
| <span class="source-line-no">171</span><span id="line-171"> LOG.info("Setting hbase:meta replicaId={} location in ZooKeeper as {}, state={}", replicaId,</span> |
| <span class="source-line-no">172</span><span id="line-172"> serverName, state);</span> |
| <span class="source-line-no">173</span><span id="line-173"> // Make the MetaRegionServer pb and then get its bytes and save this as</span> |
| <span class="source-line-no">174</span><span id="line-174"> // the znode content.</span> |
| <span class="source-line-no">175</span><span id="line-175"> MetaRegionServer pbrsr =</span> |
| <span class="source-line-no">176</span><span id="line-176"> MetaRegionServer.newBuilder().setServer(ProtobufUtil.toServerName(serverName))</span> |
| <span class="source-line-no">177</span><span id="line-177"> .setRpcVersion(HConstants.RPC_CURRENT_VERSION).setState(state.convert()).build();</span> |
| <span class="source-line-no">178</span><span id="line-178"> byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());</span> |
| <span class="source-line-no">179</span><span id="line-179"> try {</span> |
| <span class="source-line-no">180</span><span id="line-180"> ZKUtil.setData(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId), data);</span> |
| <span class="source-line-no">181</span><span id="line-181"> } catch (KeeperException.NoNodeException nne) {</span> |
| <span class="source-line-no">182</span><span id="line-182"> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> LOG.debug("hbase:meta region location doesn't exist, create it");</span> |
| <span class="source-line-no">184</span><span id="line-184"> } else {</span> |
| <span class="source-line-no">185</span><span id="line-185"> LOG.debug(</span> |
| <span class="source-line-no">186</span><span id="line-186"> "hbase:meta region location doesn't exist for replicaId=" + replicaId + ", create it");</span> |
| <span class="source-line-no">187</span><span id="line-187"> }</span> |
| <span class="source-line-no">188</span><span id="line-188"> ZKUtil.createAndWatch(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId),</span> |
| <span class="source-line-no">189</span><span id="line-189"> data);</span> |
| <span class="source-line-no">190</span><span id="line-190"> }</span> |
| <span class="source-line-no">191</span><span id="line-191"> }</span> |
| <span class="source-line-no">192</span><span id="line-192"></span> |
| <span class="source-line-no">193</span><span id="line-193"> /**</span> |
| <span class="source-line-no">194</span><span id="line-194"> * Load the meta region state from the meta server ZNode.</span> |
| <span class="source-line-no">195</span><span id="line-195"> */</span> |
| <span class="source-line-no">196</span><span id="line-196"> @RestrictedApi(explanation = "Should only be called in self or tests", link = "",</span> |
| <span class="source-line-no">197</span><span id="line-197"> allowedOnPath = ".*/src/test/.*|.*/MetaTableLocator\\.java")</span> |
| <span class="source-line-no">198</span><span id="line-198"> public static RegionState getMetaRegionState(ZKWatcher zkw) throws KeeperException {</span> |
| <span class="source-line-no">199</span><span id="line-199"> return getMetaRegionState(zkw, RegionInfo.DEFAULT_REPLICA_ID);</span> |
| <span class="source-line-no">200</span><span id="line-200"> }</span> |
| <span class="source-line-no">201</span><span id="line-201"></span> |
| <span class="source-line-no">202</span><span id="line-202"> /**</span> |
| <span class="source-line-no">203</span><span id="line-203"> * Load the meta region state from the meta region server ZNode.</span> |
| <span class="source-line-no">204</span><span id="line-204"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">205</span><span id="line-205"> * operation</span> |
| <span class="source-line-no">206</span><span id="line-206"> * @param replicaId the ID of the replica</span> |
| <span class="source-line-no">207</span><span id="line-207"> * @throws KeeperException if a ZooKeeper operation fails</span> |
| <span class="source-line-no">208</span><span id="line-208"> */</span> |
| <span class="source-line-no">209</span><span id="line-209"> public static RegionState getMetaRegionState(ZKWatcher zkw, int replicaId)</span> |
| <span class="source-line-no">210</span><span id="line-210"> throws KeeperException {</span> |
| <span class="source-line-no">211</span><span id="line-211"> RegionState regionState = null;</span> |
| <span class="source-line-no">212</span><span id="line-212"> try {</span> |
| <span class="source-line-no">213</span><span id="line-213"> byte[] data = ZKUtil.getData(zkw, zkw.getZNodePaths().getZNodeForReplica(replicaId));</span> |
| <span class="source-line-no">214</span><span id="line-214"> regionState = ProtobufUtil.parseMetaRegionStateFrom(data, replicaId);</span> |
| <span class="source-line-no">215</span><span id="line-215"> } catch (DeserializationException e) {</span> |
| <span class="source-line-no">216</span><span id="line-216"> throw ZKUtil.convert(e);</span> |
| <span class="source-line-no">217</span><span id="line-217"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">218</span><span id="line-218"> Thread.currentThread().interrupt();</span> |
| <span class="source-line-no">219</span><span id="line-219"> }</span> |
| <span class="source-line-no">220</span><span id="line-220"> return regionState;</span> |
| <span class="source-line-no">221</span><span id="line-221"> }</span> |
| <span class="source-line-no">222</span><span id="line-222"></span> |
| <span class="source-line-no">223</span><span id="line-223"> /**</span> |
| <span class="source-line-no">224</span><span id="line-224"> * Deletes the location of <code>hbase:meta</code> in ZooKeeper.</span> |
| <span class="source-line-no">225</span><span id="line-225"> * @param zookeeper zookeeper reference</span> |
| <span class="source-line-no">226</span><span id="line-226"> * @throws KeeperException unexpected zookeeper exception</span> |
| <span class="source-line-no">227</span><span id="line-227"> */</span> |
| <span class="source-line-no">228</span><span id="line-228"> @RestrictedApi(explanation = "Should only be called in tests", link = "",</span> |
| <span class="source-line-no">229</span><span id="line-229"> allowedOnPath = ".*/src/test/.*")</span> |
| <span class="source-line-no">230</span><span id="line-230"> public static void deleteMetaLocation(ZKWatcher zookeeper) throws KeeperException {</span> |
| <span class="source-line-no">231</span><span id="line-231"> deleteMetaLocation(zookeeper, RegionInfo.DEFAULT_REPLICA_ID);</span> |
| <span class="source-line-no">232</span><span id="line-232"> }</span> |
| <span class="source-line-no">233</span><span id="line-233"></span> |
| <span class="source-line-no">234</span><span id="line-234"> public static void deleteMetaLocation(ZKWatcher zookeeper, int replicaId) throws KeeperException {</span> |
| <span class="source-line-no">235</span><span id="line-235"> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {</span> |
| <span class="source-line-no">236</span><span id="line-236"> LOG.info("Deleting hbase:meta region location in ZooKeeper");</span> |
| <span class="source-line-no">237</span><span id="line-237"> } else {</span> |
| <span class="source-line-no">238</span><span id="line-238"> LOG.info("Deleting hbase:meta for {} region location in ZooKeeper", replicaId);</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"> try {</span> |
| <span class="source-line-no">241</span><span id="line-241"> // Just delete the node. Don't need any watches.</span> |
| <span class="source-line-no">242</span><span id="line-242"> ZKUtil.deleteNode(zookeeper, zookeeper.getZNodePaths().getZNodeForReplica(replicaId));</span> |
| <span class="source-line-no">243</span><span id="line-243"> } catch (KeeperException.NoNodeException nne) {</span> |
| <span class="source-line-no">244</span><span id="line-244"> // Has already been deleted</span> |
| <span class="source-line-no">245</span><span id="line-245"> }</span> |
| <span class="source-line-no">246</span><span id="line-246"> }</span> |
| <span class="source-line-no">247</span><span id="line-247"></span> |
| <span class="source-line-no">248</span><span id="line-248"> /**</span> |
| <span class="source-line-no">249</span><span id="line-249"> * Wait until the meta region is available and is not in transition.</span> |
| <span class="source-line-no">250</span><span id="line-250"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and</span> |
| <span class="source-line-no">251</span><span id="line-251"> * constants</span> |
| <span class="source-line-no">252</span><span id="line-252"> * @param replicaId the ID of the replica</span> |
| <span class="source-line-no">253</span><span id="line-253"> * @param timeout maximum time to wait in millis</span> |
| <span class="source-line-no">254</span><span id="line-254"> * @return ServerName or null if we timed out.</span> |
| <span class="source-line-no">255</span><span id="line-255"> * @throws InterruptedException if waiting for the socket operation fails</span> |
| <span class="source-line-no">256</span><span id="line-256"> */</span> |
| <span class="source-line-no">257</span><span id="line-257"> private static ServerName blockUntilAvailable(final ZKWatcher zkw, int replicaId,</span> |
| <span class="source-line-no">258</span><span id="line-258"> final long timeout) throws InterruptedException {</span> |
| <span class="source-line-no">259</span><span id="line-259"> if (timeout < 0) {</span> |
| <span class="source-line-no">260</span><span id="line-260"> throw new IllegalArgumentException();</span> |
| <span class="source-line-no">261</span><span id="line-261"> }</span> |
| <span class="source-line-no">262</span><span id="line-262"></span> |
| <span class="source-line-no">263</span><span id="line-263"> if (zkw == null) {</span> |
| <span class="source-line-no">264</span><span id="line-264"> throw new IllegalArgumentException();</span> |
| <span class="source-line-no">265</span><span id="line-265"> }</span> |
| <span class="source-line-no">266</span><span id="line-266"></span> |
| <span class="source-line-no">267</span><span id="line-267"> long startTime = EnvironmentEdgeManager.currentTime();</span> |
| <span class="source-line-no">268</span><span id="line-268"> ServerName sn = null;</span> |
| <span class="source-line-no">269</span><span id="line-269"> while (true) {</span> |
| <span class="source-line-no">270</span><span id="line-270"> sn = getMetaRegionLocation(zkw, replicaId);</span> |
| <span class="source-line-no">271</span><span id="line-271"> if (</span> |
| <span class="source-line-no">272</span><span id="line-272"> sn != null || (EnvironmentEdgeManager.currentTime() - startTime)</span> |
| <span class="source-line-no">273</span><span id="line-273"> > timeout - HConstants.SOCKET_RETRY_WAIT_MS</span> |
| <span class="source-line-no">274</span><span id="line-274"> ) {</span> |
| <span class="source-line-no">275</span><span id="line-275"> break;</span> |
| <span class="source-line-no">276</span><span id="line-276"> }</span> |
| <span class="source-line-no">277</span><span id="line-277"> Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);</span> |
| <span class="source-line-no">278</span><span id="line-278"> }</span> |
| <span class="source-line-no">279</span><span id="line-279"> return sn;</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</span> |
| <span class="source-line-no">281</span><span id="line-281">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
