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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.util;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Collection;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.EnumSet;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Random;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.conf.Configuration;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.fs.Path;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.ClusterMetrics.Option;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.ServerName;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.TableName;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.ZooKeeperConnectionException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.AsyncClusterConnection;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.ClusterConnectionFactory;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.Put;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.Table;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.ServerManager;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.security.User;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.zookeeper.KeeperException;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.slf4j.Logger;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.slf4j.LoggerFactory;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span>/**<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * This class contains helper methods that repair parts of hbase's filesystem contents.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>@InterfaceAudience.Private<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>public class HBaseFsckRepair {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private static final Logger LOG = LoggerFactory.getLogger(HBaseFsckRepair.class);<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> * Fix multiple assignment by doing silent closes on each RS hosting the region and then force ZK<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * unassigned node to OFFLINE to trigger assignment by master.<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * @param connection HBase connection to the cluster<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * @param region Region to undeploy<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * @param servers list of Servers to undeploy from<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> */<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> public static void fixMultiAssignment(Connection connection, RegionInfo region,<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> List<ServerName> servers) throws IOException, KeeperException, InterruptedException {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> // Close region on the servers silently<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> for (ServerName server : servers) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> closeRegionSilentlyAndWait(connection, server, region);<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> // Force ZK node to OFFLINE so master assigns<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> forceOfflineInZK(connection.getAdmin(), region);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> /**<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * Fix unassigned by creating/transition the unassigned ZK node for this region to OFFLINE state<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * with a special flag to tell the master that this is a forced operation by HBCK. This assumes<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * that info is in META.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> */<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public static void fixUnassigned(Admin admin, RegionInfo region)<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> throws IOException, KeeperException, InterruptedException {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> // Force ZK node to OFFLINE so master assigns<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> forceOfflineInZK(admin, region);<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<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> * In 0.90, this forces an HRI offline by setting the RegionTransitionData in ZK to have<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * HBCK_CODE_NAME as the server. This is a special case in the AssignmentManager that attempts an<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * assign call by the master. This doesn't seem to work properly in the updated version of 0.92+'s<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * hbck so we use assign to force the region into transition. This has the side-effect of<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * requiring a RegionInfo that considers regionId (timestamp) in comparators that is addressed by<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * HBASE-5563.<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> */<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> private static void forceOfflineInZK(Admin admin, final RegionInfo region)<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> throws ZooKeeperConnectionException, KeeperException, IOException, InterruptedException {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> admin.assign(region.getRegionName());<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> /*<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * Should we check all assignments or just not in RIT?<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> */<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> public static void waitUntilAssigned(Admin admin, RegionInfo region)<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> throws IOException, InterruptedException {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> long timeout = admin.getConfiguration().getLong("hbase.hbck.assign.timeout", 120000);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> long expiration = timeout + EnvironmentEdgeManager.currentTime();<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> while (EnvironmentEdgeManager.currentTime() < expiration) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> try {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> boolean inTransition = false;<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> for (RegionState rs : admin.getClusterMetrics(EnumSet.of(Option.REGIONS_IN_TRANSITION))<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> .getRegionStatesInTransition()) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (RegionInfo.COMPARATOR.compare(rs.getRegion(), region) == 0) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> inTransition = true;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> break;<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> if (!inTransition) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> // yay! no longer RIT<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> return;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> // still in rit<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> LOG.info("Region still in transition, waiting for " + "it to become assigned: " + region);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> } catch (IOException e) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> LOG.warn("Exception when waiting for region to become assigned," + " retrying", e);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> Thread.sleep(1000);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> throw new IOException("Region " + region + " failed to move out of "<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> + "transition within timeout " + timeout + "ms");<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> * Contacts a region server and waits up to hbase.hbck.close.timeout ms (default 120s) to close<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * the region. This bypasses the active hmaster.<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> */<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public static void closeRegionSilentlyAndWait(Connection connection, ServerName server,<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> RegionInfo region) throws IOException, InterruptedException {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> long timeout = connection.getConfiguration().getLong("hbase.hbck.close.timeout", 120000);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // this is a bit ugly but it is only used in the old hbck and tests, so I think it is fine.<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> try (AsyncClusterConnection asyncConn = ClusterConnectionFactory<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> .createAsyncClusterConnection(connection.getConfiguration(), null, User.getCurrent())) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> ServerManager.closeRegionSilentlyAndWait(asyncConn, server, region, timeout);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<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> * Puts the specified RegionInfo into META with replica related columns<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public static void fixMetaHoleOnlineAndAddReplicas(Configuration conf, RegionInfo hri,<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> Collection<ServerName> servers, int numReplicas) throws IOException {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> Connection conn = ConnectionFactory.createConnection(conf);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> Table meta = conn.getTable(TableName.META_TABLE_NAME);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Put put = MetaTableAccessor.makePutFromRegionInfo(hri);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> if (numReplicas > 1) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> Random rand = ThreadLocalRandom.current();<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> ServerName[] serversArr = servers.toArray(new ServerName[servers.size()]);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> for (int i = 1; i < numReplicas; i++) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> ServerName sn = serversArr[rand.nextInt(serversArr.length)];<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> // the column added here is just to make sure the master is able to<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> // see the additional replicas when it is asked to assign. The<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // final value of these columns will be different and will be updated<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> // by the actual regionservers that start hosting the respective replicas<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> MetaTableAccessor.addLocation(put, sn, sn.getStartcode(), i);<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> meta.put(put);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> meta.close();<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> conn.close();<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> /**<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * Creates, flushes, and closes a new region.<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> */<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> public static HRegion createHDFSRegionDir(Configuration conf, RegionInfo hri, TableDescriptor htd)<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> throws IOException {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> // Create HRegion<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> Path root = CommonFSUtils.getRootDir(conf);<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> HRegion region = HRegion.createHRegion(hri, root, conf, htd, null);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> // Close the new region to flush to disk. Close log file too.<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> region.close();<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> return region;<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span><a name="line.184"></a> |
| <span class="sourceLineNo">185</span> /*<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * Remove parent<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> */<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> public static void removeParentInMeta(Configuration conf, RegionInfo hri) throws IOException {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> throw new UnsupportedOperationException("HBCK1 is read-only now, use HBCK2 instead");<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> |
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