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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.BufferedInputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.BufferedOutputStream;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.Closeable;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.DataInputStream;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.DataOutputStream;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.File;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.FileInputStream;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.io.FileOutputStream;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.io.IOException;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.net.InetAddress;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.nio.file.Files;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.nio.file.Paths;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.ArrayList;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Collection;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.Collections;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.EnumSet;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import java.util.HashSet;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import java.util.Iterator;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import java.util.List;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import java.util.Locale;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import java.util.Optional;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import java.util.Set;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import java.util.concurrent.Callable;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import java.util.concurrent.CancellationException;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import java.util.concurrent.ExecutionException;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import java.util.concurrent.ExecutorService;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import java.util.concurrent.Executors;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import java.util.concurrent.Future;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import java.util.concurrent.TimeUnit;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import java.util.concurrent.TimeoutException;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import java.util.function.Predicate;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.commons.io.IOUtils;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hadoop.conf.Configuration;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.ClusterMetrics.Option;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.HConstants;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.ServerName;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.client.DoNotRetryRegionException;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.assignment.AssignmentManager;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.net.Address;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.rsgroup.RSGroupInfo;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>import org.slf4j.Logger;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>import org.slf4j.LoggerFactory;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span>import org.apache.hbase.thirdparty.com.google.common.net.InetAddresses;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span>import org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils;<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> * Tool for loading/unloading regions to/from given regionserver This tool can be run from Command<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * line directly as a utility. Supports Ack/No Ack mode for loading/unloading operations.Ack mode<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * acknowledges if regions are online after movement while noAck mode is best effort mode that<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * improves performance but will still move on if region is stuck/not moved. Motivation behind noAck<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * mode being RS shutdown where even if a Region is stuck, upon shutdown master will move it<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * anyways. This can also be used by constructiong an Object using the builder and then calling<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * {@link #load()} or {@link #unload()} methods for the desired operations.<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> */<a name="line.83"></a> |
| <span class="sourceLineNo">084</span>@InterfaceAudience.Public<a name="line.84"></a> |
| <span class="sourceLineNo">085</span>public class RegionMover extends AbstractHBaseTool implements Closeable {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public static final String MOVE_RETRIES_MAX_KEY = "hbase.move.retries.max";<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> public static final String MOVE_WAIT_MAX_KEY = "hbase.move.wait.max";<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> public static final String SERVERSTART_WAIT_MAX_KEY = "hbase.serverstart.wait.max";<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> public static final int DEFAULT_MOVE_RETRIES_MAX = 5;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> public static final int DEFAULT_MOVE_WAIT_MAX = 60;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public static final int DEFAULT_SERVERSTART_WAIT_MAX = 180;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private static final Logger LOG = LoggerFactory.getLogger(RegionMover.class);<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> private RegionMoverBuilder rmbuilder;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private boolean ack = true;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> private int maxthreads = 1;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> private int timeout;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> private String loadUnload;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> private String hostname;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> private String filename;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> private String excludeFile;<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> private String designatedFile;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> private int port;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> private Connection conn;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> private Admin admin;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> private RackManager rackManager;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> private RegionMover(RegionMoverBuilder builder) throws IOException {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> this.hostname = builder.hostname;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> this.filename = builder.filename;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> this.excludeFile = builder.excludeFile;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> this.designatedFile = builder.designatedFile;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> this.maxthreads = builder.maxthreads;<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> this.ack = builder.ack;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> this.port = builder.port;<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> this.timeout = builder.timeout;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> setConf(builder.conf);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> this.conn = ConnectionFactory.createConnection(conf);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> this.admin = conn.getAdmin();<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> // if the hostname of master is ip, it indicates that the master/RS has enabled use-ip, we need<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> // to resolve the current hostname to ip to ensure that the RegionMover logic can be executed<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> // normally, see HBASE-27304 for details.<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> ServerName master = admin.getClusterMetrics(EnumSet.of(Option.MASTER)).getMasterName();<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> if (InetAddresses.isInetAddress(master.getHostname())) {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> if (!InetAddresses.isInetAddress(this.hostname)) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> this.hostname = InetAddress.getByName(this.hostname).getHostAddress();<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> // Only while running unit tests, builder.rackManager will not be null for the convenience of<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // providing custom rackManager. Otherwise for regular workflow/user triggered action,<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> // builder.rackManager is supposed to be null. Hence, setter of builder.rackManager is<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> // provided as @InterfaceAudience.Private and it is commented that this is just<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> // to be used by unit test.<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> rackManager = builder.rackManager == null ? new RackManager(conf) : builder.rackManager;<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> private RegionMover() {<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> @Override<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> public void close() {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> IOUtils.closeQuietly(this.admin, e -> LOG.warn("failed to close admin", e));<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> IOUtils.closeQuietly(this.conn, e -> LOG.warn("failed to close conn", e));<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> /**<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * Builder for Region mover. Use the {@link #build()} method to create RegionMover object. Has<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * {@link #filename(String)}, {@link #excludeFile(String)}, {@link #maxthreads(int)},<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> * {@link #ack(boolean)}, {@link #timeout(int)}, {@link #designatedFile(String)} methods to set<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * the corresponding options.<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> */<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> public static class RegionMoverBuilder {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> private boolean ack = true;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> private int maxthreads = 1;<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> private int timeout = Integer.MAX_VALUE;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> private String hostname;<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> private String filename;<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> private String excludeFile = null;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> private String designatedFile = null;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> private String defaultDir = System.getProperty("java.io.tmpdir");<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> @InterfaceAudience.Private<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> final int port;<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> private final Configuration conf;<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> private RackManager rackManager;<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> public RegionMoverBuilder(String hostname) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> this(hostname, createConf());<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> /**<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * Creates a new configuration and sets region mover specific overrides<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> */<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> private static Configuration createConf() {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> Configuration conf = HBaseConfiguration.create();<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> conf.setInt("hbase.client.prefetch.limit", 1);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> conf.setInt("hbase.client.pause", 500);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> conf.setInt("hbase.client.retries.number", 100);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> return conf;<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<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> * @param hostname Hostname to unload regions from or load regions to. Can be either hostname or<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * hostname:port.<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * @param conf Configuration object<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> */<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> public RegionMoverBuilder(String hostname, Configuration conf) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> String[] splitHostname = hostname.toLowerCase().split(":");<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> this.hostname = splitHostname[0];<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (splitHostname.length == 2) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> this.port = Integer.parseInt(splitHostname[1]);<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> } else {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> this.port = conf.getInt(HConstants.REGIONSERVER_PORT, HConstants.DEFAULT_REGIONSERVER_PORT);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> }<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> this.filename = defaultDir + File.separator + System.getProperty("user.name") + this.hostname<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> + ":" + Integer.toString(this.port);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> this.conf = conf;<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> * Path of file where regions will be written to during unloading/read from during loading<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * @return RegionMoverBuilder object<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> */<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> public RegionMoverBuilder filename(String filename) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> this.filename = filename;<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> return this;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span><a name="line.210"></a> |
| <span class="sourceLineNo">211</span> /**<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * Set the max number of threads that will be used to move regions<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> */<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> public RegionMoverBuilder maxthreads(int threads) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> this.maxthreads = threads;<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> return this;<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> }<a name="line.217"></a> |
| <span class="sourceLineNo">218</span><a name="line.218"></a> |
| <span class="sourceLineNo">219</span> /**<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> * Path of file containing hostnames to be excluded during region movement. Exclude file should<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * have 'host:port' per line. Port is mandatory here as we can have many RS running on a single<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * host.<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> */<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> public RegionMoverBuilder excludeFile(String excludefile) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> this.excludeFile = excludefile;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return this;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span><a name="line.228"></a> |
| <span class="sourceLineNo">229</span> /**<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * Set the designated file. Designated file contains hostnames where region moves. Designated<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> * file should have 'host:port' per line. Port is mandatory here as we can have many RS running<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> * on a single host.<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * @param designatedFile The designated file<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> * @return RegionMoverBuilder object<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> */<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> public RegionMoverBuilder designatedFile(String designatedFile) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> this.designatedFile = designatedFile;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> return this;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span><a name="line.240"></a> |
| <span class="sourceLineNo">241</span> /**<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * Set ack/noAck mode.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * <p><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> * In ack mode regions are acknowledged before and after moving and the move is retried<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> * hbase.move.retries.max times, if unsuccessful we quit with exit code 1.No Ack mode is a best<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> * effort mode,each region movement is tried once.This can be used during graceful shutdown as<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> * even if we have a stuck region,upon shutdown it'll be reassigned anyway.<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> * <p><a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * @return RegionMoverBuilder object<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> */<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> public RegionMoverBuilder ack(boolean ack) {<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> this.ack = ack;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> return this;<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> /**<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * Set the timeout for Load/Unload operation in seconds.This is a global timeout,threadpool for<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * movers also have a separate time which is hbase.move.wait.max * number of regions to<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * load/unload<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * @param timeout in seconds<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @return RegionMoverBuilder object<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> */<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> public RegionMoverBuilder timeout(int timeout) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> this.timeout = timeout;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> return this;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> /**<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> * Set specific rackManager implementation. This setter method is for testing purpose only.<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> * @param rackManager rackManager impl<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> * @return RegionMoverBuilder object<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> */<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> @InterfaceAudience.Private<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> public RegionMoverBuilder rackManager(RackManager rackManager) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> this.rackManager = rackManager;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> return this;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span><a name="line.278"></a> |
| <span class="sourceLineNo">279</span> /**<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * This method builds the appropriate RegionMover object which can then be used to load/unload<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> * using load and unload methods<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> * @return RegionMover object<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> */<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> public RegionMover build() throws IOException {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> return new RegionMover(this);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> }<a name="line.287"></a> |
| <span class="sourceLineNo">288</span><a name="line.288"></a> |
| <span class="sourceLineNo">289</span> /**<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * Loads the specified {@link #hostname} with regions listed in the {@link #filename} RegionMover<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> * Object has to be created using {@link #RegionMover(RegionMoverBuilder)}<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> * @return true if loading succeeded, false otherwise<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> */<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> public boolean load() throws ExecutionException, InterruptedException, TimeoutException {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> ExecutorService loadPool = Executors.newFixedThreadPool(1);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> Future<Boolean> loadTask = loadPool.submit(getMetaRegionMovePlan());<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> boolean isMetaMoved = waitTaskToFinish(loadPool, loadTask, "loading");<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> if (!isMetaMoved) {<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> return false;<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> }<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> loadPool = Executors.newFixedThreadPool(1);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> loadTask = loadPool.submit(getNonMetaRegionsMovePlan());<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> return waitTaskToFinish(loadPool, loadTask, "loading");<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> private Callable<Boolean> getMetaRegionMovePlan() {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> return getRegionsMovePlan(true);<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span><a name="line.309"></a> |
| <span class="sourceLineNo">310</span> private Callable<Boolean> getNonMetaRegionsMovePlan() {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> return getRegionsMovePlan(false);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<a name="line.312"></a> |
| <span class="sourceLineNo">313</span><a name="line.313"></a> |
| <span class="sourceLineNo">314</span> private Callable<Boolean> getRegionsMovePlan(boolean moveMetaRegion) {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> return () -> {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> try {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> List<RegionInfo> regionsToMove = readRegionsFromFile(filename);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> if (regionsToMove.isEmpty()) {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> LOG.info("No regions to load.Exiting");<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> return true;<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> }<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> Optional<RegionInfo> metaRegion = getMetaRegionInfoIfToBeMoved(regionsToMove);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> if (moveMetaRegion) {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> if (metaRegion.isPresent()) {<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> loadRegions(Collections.singletonList(metaRegion.get()));<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> } else {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> metaRegion.ifPresent(regionsToMove::remove);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> loadRegions(regionsToMove);<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> } catch (Exception e) {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> LOG.error("Error while loading regions to " + hostname, e);<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> return false;<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> }<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> return true;<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> };<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> private Optional<RegionInfo> getMetaRegionInfoIfToBeMoved(List<RegionInfo> regionsToMove) {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> return regionsToMove.stream().filter(RegionInfo::isMetaRegion).findFirst();<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> }<a name="line.341"></a> |
| <span class="sourceLineNo">342</span><a name="line.342"></a> |
| <span class="sourceLineNo">343</span> private void loadRegions(List<RegionInfo> regionsToMove) throws Exception {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> ServerName server = getTargetServer();<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> List<RegionInfo> movedRegions = Collections.synchronizedList(new ArrayList<>());<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> LOG.info("Moving " + regionsToMove.size() + " regions to " + server + " using "<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> + this.maxthreads + " threads.Ack mode:" + this.ack);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> final ExecutorService moveRegionsPool = Executors.newFixedThreadPool(this.maxthreads);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> List<Future<Boolean>> taskList = new ArrayList<>();<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> int counter = 0;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> while (counter < regionsToMove.size()) {<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> RegionInfo region = regionsToMove.get(counter);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> ServerName currentServer = MoveWithAck.getServerNameForRegion(region, admin, conn);<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> if (currentServer == null) {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> LOG<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> .warn("Could not get server for Region:" + region.getRegionNameAsString() + " moving on");<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> counter++;<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> continue;<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> } else if (server.equals(currentServer)) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> LOG.info(<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> "Region " + region.getRegionNameAsString() + " is already on target server=" + server);<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> counter++;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> continue;<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> }<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> if (ack) {<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> Future<Boolean> task = moveRegionsPool<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> .submit(new MoveWithAck(conn, region, currentServer, server, movedRegions));<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> taskList.add(task);<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> } else {<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> Future<Boolean> task = moveRegionsPool<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> .submit(new MoveWithoutAck(admin, region, currentServer, server, movedRegions));<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> taskList.add(task);<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> }<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> counter++;<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> moveRegionsPool.shutdown();<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> long timeoutInSeconds = regionsToMove.size()<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> * admin.getConfiguration().getLong(MOVE_WAIT_MAX_KEY, DEFAULT_MOVE_WAIT_MAX);<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> waitMoveTasksToFinish(moveRegionsPool, taskList, timeoutInSeconds);<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span><a name="line.383"></a> |
| <span class="sourceLineNo">384</span> /**<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> * Unload regions from given {@link #hostname} using ack/noAck mode and {@link #maxthreads}.In<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> * noAck mode we do not make sure that region is successfully online on the target region<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> * server,hence it is best effort.We do not unload regions to hostnames given in<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> * {@link #excludeFile}. If designatedFile is present with some contents, we will unload regions<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> * to hostnames provided in {@link #designatedFile}<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> * @return true if unloading succeeded, false otherwise<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> */<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> public boolean unload() throws InterruptedException, ExecutionException, TimeoutException {<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> return unloadRegions(false);<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> /**<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> * Unload regions from given {@link #hostname} using ack/noAck mode and {@link #maxthreads}.In<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> * noAck mode we do not make sure that region is successfully online on the target region<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> * server,hence it is best effort.We do not unload regions to hostnames given in<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> * {@link #excludeFile}. If designatedFile is present with some contents, we will unload regions<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> * to hostnames provided in {@link #designatedFile}. While unloading regions, destination<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> * RegionServers are selected from different rack i.e regions should not move to any RegionServers<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> * that belong to same rack as source RegionServer.<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> * @return true if unloading succeeded, false otherwise<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> */<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> public boolean unloadFromRack()<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> throws InterruptedException, ExecutionException, TimeoutException {<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> return unloadRegions(true);<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> }<a name="line.409"></a> |
| <span class="sourceLineNo">410</span><a name="line.410"></a> |
| <span class="sourceLineNo">411</span> private boolean unloadRegions(boolean unloadFromRack)<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> throws InterruptedException, ExecutionException, TimeoutException {<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> deleteFile(this.filename);<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> ExecutorService unloadPool = Executors.newFixedThreadPool(1);<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> Future<Boolean> unloadTask = unloadPool.submit(() -> {<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> List<RegionInfo> movedRegions = Collections.synchronizedList(new ArrayList<>());<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> try {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> // Get Online RegionServers<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> List<ServerName> regionServers = new ArrayList<>();<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> RSGroupInfo rsgroup = admin.getRSGroup(Address.fromParts(hostname, port));<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> LOG.info("{} belongs to {}", hostname, rsgroup.getName());<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> regionServers.addAll(filterRSGroupServers(rsgroup, admin.getRegionServers()));<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> // Remove the host Region server from target Region Servers list<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> ServerName server = stripServer(regionServers, hostname, port);<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> if (server == null) {<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> LOG.info("Could not find server '{}:{}' in the set of region servers. giving up.",<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> hostname, port);<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> LOG.debug("List of region servers: {}", regionServers);<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> return false;<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> // Remove RS not present in the designated file<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> includeExcludeRegionServers(designatedFile, regionServers, true);<a name="line.432"></a> |
| <span class="sourceLineNo">433</span><a name="line.433"></a> |
| <span class="sourceLineNo">434</span> // Remove RS present in the exclude file<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> includeExcludeRegionServers(excludeFile, regionServers, false);<a name="line.435"></a> |
| <span class="sourceLineNo">436</span><a name="line.436"></a> |
| <span class="sourceLineNo">437</span> if (unloadFromRack) {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> // remove regionServers that belong to same rack (as source host) since the goal is to<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> // unload regions from source regionServer to destination regionServers<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> // that belong to different rack only.<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> String sourceRack = rackManager.getRack(server);<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> List<String> racks = rackManager.getRack(regionServers);<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> Iterator<ServerName> iterator = regionServers.iterator();<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> int i = 0;<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> while (iterator.hasNext()) {<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> iterator.next();<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> if (racks.size() > i && racks.get(i) != null && racks.get(i).equals(sourceRack)) {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> iterator.remove();<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> }<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> i++;<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> }<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> // Remove decommissioned RS<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> Set<ServerName> decommissionedRS = new HashSet<>(admin.listDecommissionedRegionServers());<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> if (CollectionUtils.isNotEmpty(decommissionedRS)) {<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> regionServers.removeIf(decommissionedRS::contains);<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> LOG.debug("Excluded RegionServers from unloading regions to because they "<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> + "are marked as decommissioned. Servers: {}", decommissionedRS);<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> }<a name="line.460"></a> |
| <span class="sourceLineNo">461</span><a name="line.461"></a> |
| <span class="sourceLineNo">462</span> stripMaster(regionServers);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> if (regionServers.isEmpty()) {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> LOG.warn("No Regions were moved - no servers available");<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> return false;<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> } else {<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> LOG.info("Available servers {}", regionServers);<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> unloadRegions(server, regionServers, movedRegions);<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> } catch (Exception e) {<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> LOG.error("Error while unloading regions ", e);<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> return false;<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> } finally {<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> if (movedRegions != null) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> writeFile(filename, movedRegions);<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> }<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> return true;<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> });<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> return waitTaskToFinish(unloadPool, unloadTask, "unloading");<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> }<a name="line.481"></a> |
| <span class="sourceLineNo">482</span><a name="line.482"></a> |
| <span class="sourceLineNo">483</span> @InterfaceAudience.Private<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> Collection<ServerName> filterRSGroupServers(RSGroupInfo rsgroup,<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> Collection<ServerName> onlineServers) {<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> if (rsgroup.getName().equals(RSGroupInfo.DEFAULT_GROUP)) {<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> return onlineServers;<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> }<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> List<ServerName> serverLists = new ArrayList<>(rsgroup.getServers().size());<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> for (ServerName server : onlineServers) {<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> Address address = Address.fromParts(server.getHostname(), server.getPort());<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> if (rsgroup.containsServer(address)) {<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> serverLists.add(server);<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> }<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> }<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> return serverLists;<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> }<a name="line.497"></a> |
| <span class="sourceLineNo">498</span><a name="line.498"></a> |
| <span class="sourceLineNo">499</span> private void unloadRegions(ServerName server, List<ServerName> regionServers,<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> List<RegionInfo> movedRegions) throws Exception {<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> while (true) {<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> List<RegionInfo> regionsToMove = admin.getRegions(server);<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> regionsToMove.removeAll(movedRegions);<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> if (regionsToMove.isEmpty()) {<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> LOG.info("No Regions to move....Quitting now");<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> break;<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> }<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> LOG.info("Moving {} regions from {} to {} servers using {} threads .Ack Mode: {}",<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> regionsToMove.size(), this.hostname, regionServers.size(), this.maxthreads, ack);<a name="line.509"></a> |
| <span class="sourceLineNo">510</span><a name="line.510"></a> |
| <span class="sourceLineNo">511</span> Optional<RegionInfo> metaRegion = getMetaRegionInfoIfToBeMoved(regionsToMove);<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> if (metaRegion.isPresent()) {<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> RegionInfo meta = metaRegion.get();<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> submitRegionMovesWhileUnloading(server, regionServers, movedRegions,<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> Collections.singletonList(meta));<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> regionsToMove.remove(meta);<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> }<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> submitRegionMovesWhileUnloading(server, regionServers, movedRegions, regionsToMove);<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> }<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> }<a name="line.520"></a> |
| <span class="sourceLineNo">521</span><a name="line.521"></a> |
| <span class="sourceLineNo">522</span> private void submitRegionMovesWhileUnloading(ServerName server, List<ServerName> regionServers,<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> List<RegionInfo> movedRegions, List<RegionInfo> regionsToMove) throws Exception {<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> final ExecutorService moveRegionsPool = Executors.newFixedThreadPool(this.maxthreads);<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> List<Future<Boolean>> taskList = new ArrayList<>();<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> int serverIndex = 0;<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> for (RegionInfo regionToMove : regionsToMove) {<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> if (ack) {<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> Future<Boolean> task = moveRegionsPool.submit(new MoveWithAck(conn, regionToMove, server,<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> regionServers.get(serverIndex), movedRegions));<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> taskList.add(task);<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> } else {<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> Future<Boolean> task = moveRegionsPool.submit(new MoveWithoutAck(admin, regionToMove,<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> server, regionServers.get(serverIndex), movedRegions));<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> taskList.add(task);<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> }<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> serverIndex = (serverIndex + 1) % regionServers.size();<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> }<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> moveRegionsPool.shutdown();<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> long timeoutInSeconds = regionsToMove.size()<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> * admin.getConfiguration().getLong(MOVE_WAIT_MAX_KEY, DEFAULT_MOVE_WAIT_MAX);<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> waitMoveTasksToFinish(moveRegionsPool, taskList, timeoutInSeconds);<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> }<a name="line.543"></a> |
| <span class="sourceLineNo">544</span><a name="line.544"></a> |
| <span class="sourceLineNo">545</span> private boolean waitTaskToFinish(ExecutorService pool, Future<Boolean> task, String operation)<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> throws TimeoutException, InterruptedException, ExecutionException {<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> pool.shutdown();<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> try {<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> if (!pool.awaitTermination((long) this.timeout, TimeUnit.SECONDS)) {<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> LOG.warn("Timed out before finishing the " + operation + " operation. Timeout: "<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> + this.timeout + "sec");<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> pool.shutdownNow();<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> }<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> } catch (InterruptedException e) {<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> pool.shutdownNow();<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> Thread.currentThread().interrupt();<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> }<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> try {<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> return task.get(5, TimeUnit.SECONDS);<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> } catch (InterruptedException e) {<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> LOG.warn("Interrupted while " + operation + " Regions on " + this.hostname, e);<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> throw e;<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> } catch (ExecutionException e) {<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> LOG.error("Error while " + operation + " regions on RegionServer " + this.hostname, e);<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> throw e;<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> }<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> }<a name="line.567"></a> |
| <span class="sourceLineNo">568</span><a name="line.568"></a> |
| <span class="sourceLineNo">569</span> private void waitMoveTasksToFinish(ExecutorService moveRegionsPool,<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> List<Future<Boolean>> taskList, long timeoutInSeconds) throws Exception {<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> try {<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> if (!moveRegionsPool.awaitTermination(timeoutInSeconds, TimeUnit.SECONDS)) {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> moveRegionsPool.shutdownNow();<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> }<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> } catch (InterruptedException e) {<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> moveRegionsPool.shutdownNow();<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> Thread.currentThread().interrupt();<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> }<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> for (Future<Boolean> future : taskList) {<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> try {<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> // if even after shutdownNow threads are stuck we wait for 5 secs max<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> if (!future.get(5, TimeUnit.SECONDS)) {<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> LOG.error("Was Not able to move region....Exiting Now");<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> throw new Exception("Could not move region Exception");<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> }<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> } catch (InterruptedException e) {<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> LOG.error("Interrupted while waiting for Thread to Complete " + e.getMessage(), e);<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> throw e;<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> } catch (ExecutionException e) {<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> boolean ignoreFailure = ignoreRegionMoveFailure(e);<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> if (ignoreFailure) {<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> LOG.debug("Ignore region move failure, it might have been split/merged.", e);<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> } else {<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> LOG.error("Got Exception From Thread While moving region {}", e.getMessage(), e);<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> throw e;<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> }<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> } catch (CancellationException e) {<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> LOG.error("Thread for moving region cancelled. Timeout for cancellation:" + timeoutInSeconds<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> + "secs", e);<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> throw e;<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> }<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> }<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> }<a name="line.603"></a> |
| <span class="sourceLineNo">604</span><a name="line.604"></a> |
| <span class="sourceLineNo">605</span> private boolean ignoreRegionMoveFailure(ExecutionException e) {<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> boolean ignoreFailure = false;<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> if (e.getCause() instanceof UnknownRegionException) {<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> // region does not exist anymore<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> ignoreFailure = true;<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> } else if (<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> e.getCause() instanceof DoNotRetryRegionException && e.getCause().getMessage() != null<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> && e.getCause().getMessage()<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> .contains(AssignmentManager.UNEXPECTED_STATE_REGION + "state=SPLIT,")<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> ) {<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> // region is recently split<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> ignoreFailure = true;<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> }<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> return ignoreFailure;<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> }<a name="line.619"></a> |
| <span class="sourceLineNo">620</span><a name="line.620"></a> |
| <span class="sourceLineNo">621</span> private ServerName getTargetServer() throws Exception {<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> ServerName server = null;<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> int maxWaitInSeconds =<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> admin.getConfiguration().getInt(SERVERSTART_WAIT_MAX_KEY, DEFAULT_SERVERSTART_WAIT_MAX);<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> long maxWait = EnvironmentEdgeManager.currentTime() + maxWaitInSeconds * 1000;<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> while (EnvironmentEdgeManager.currentTime() < maxWait) {<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> try {<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> List<ServerName> regionServers = new ArrayList<>();<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> regionServers.addAll(admin.getRegionServers());<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> // Remove the host Region server from target Region Servers list<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> server = stripServer(regionServers, hostname, port);<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> if (server != null) {<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> break;<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> } else {<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> LOG.warn("Server " + hostname + ":" + port + " is not up yet, waiting");<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> }<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> } catch (IOException e) {<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> LOG.warn("Could not get list of region servers", e);<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> }<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> Thread.sleep(500);<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> }<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> if (server == null) {<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> LOG.error("Server " + hostname + ":" + port + " is not up. Giving up.");<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> throw new Exception("Server " + hostname + ":" + port + " to load regions not online");<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> }<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> return server;<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> }<a name="line.647"></a> |
| <span class="sourceLineNo">648</span><a name="line.648"></a> |
| <span class="sourceLineNo">649</span> private List<RegionInfo> readRegionsFromFile(String filename) throws IOException {<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> List<RegionInfo> regions = new ArrayList<>();<a name="line.650"></a> |
| <span class="sourceLineNo">651</span> File f = new File(filename);<a name="line.651"></a> |
| <span class="sourceLineNo">652</span> if (!f.exists()) {<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> return regions;<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> }<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> try (<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(f)))) {<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> int numRegions = dis.readInt();<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> int index = 0;<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> while (index < numRegions) {<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> regions.add(RegionInfo.parseFromOrNull(Bytes.readByteArray(dis)));<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> index++;<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> }<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> } catch (IOException e) {<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> LOG.error("Error while reading regions from file:" + filename, e);<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> throw e;<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> }<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> return regions;<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> }<a name="line.668"></a> |
| <span class="sourceLineNo">669</span><a name="line.669"></a> |
| <span class="sourceLineNo">670</span> /**<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> * Write the number of regions moved in the first line followed by regions moved in subsequent<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> * lines<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> */<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> private void writeFile(String filename, List<RegionInfo> movedRegions) throws IOException {<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> try (DataOutputStream dos =<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> new DataOutputStream(new BufferedOutputStream(new FileOutputStream(filename)))) {<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> dos.writeInt(movedRegions.size());<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> for (RegionInfo region : movedRegions) {<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> Bytes.writeByteArray(dos, RegionInfo.toByteArray(region));<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> }<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> } catch (IOException e) {<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> LOG.error("ERROR: Was Not able to write regions moved to output file but moved "<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> + movedRegions.size() + " regions", e);<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> throw e;<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> }<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> }<a name="line.686"></a> |
| <span class="sourceLineNo">687</span><a name="line.687"></a> |
| <span class="sourceLineNo">688</span> private void deleteFile(String filename) {<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> File f = new File(filename);<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> if (f.exists()) {<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> f.delete();<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> }<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> }<a name="line.693"></a> |
| <span class="sourceLineNo">694</span><a name="line.694"></a> |
| <span class="sourceLineNo">695</span> /**<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> * @param filename The file should have 'host:port' per line<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> * @return List of servers from the file in format 'hostname:port'.<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> */<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> private List<String> readServersFromFile(String filename) throws IOException {<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> List<String> servers = new ArrayList<>();<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> if (filename != null) {<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> try {<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> Files.readAllLines(Paths.get(filename)).stream().map(String::trim)<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> .filter(((Predicate<String>) String::isEmpty).negate()).map(String::toLowerCase)<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> .forEach(servers::add);<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> } catch (IOException e) {<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> LOG.error("Exception while reading servers from file,", e);<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> throw e;<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> }<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> }<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> return servers;<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> }<a name="line.712"></a> |
| <span class="sourceLineNo">713</span><a name="line.713"></a> |
| <span class="sourceLineNo">714</span> /**<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> * Designates or excludes the servername whose hostname and port portion matches the list given in<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> * the file. Example:<br><a name="line.716"></a> |
| <span class="sourceLineNo">717</span> * If you want to designated RSs, suppose designatedFile has RS1, regionServers has RS1, RS2 and<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> * RS3. When we call includeExcludeRegionServers(designatedFile, regionServers, true), RS2 and RS3<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> * are removed from regionServers list so that regions can move to only RS1. If you want to<a name="line.719"></a> |
| <span class="sourceLineNo">720</span> * exclude RSs, suppose excludeFile has RS1, regionServers has RS1, RS2 and RS3. When we call<a name="line.720"></a> |
| <span class="sourceLineNo">721</span> * includeExcludeRegionServers(excludeFile, servers, false), RS1 is removed from regionServers<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> * list so that regions can move to only RS2 and RS3.<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> */<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> private void includeExcludeRegionServers(String fileName, List<ServerName> regionServers,<a name="line.724"></a> |
| <span class="sourceLineNo">725</span> boolean isInclude) throws IOException {<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> if (fileName != null) {<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> List<String> servers = readServersFromFile(fileName);<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> if (servers.isEmpty()) {<a name="line.728"></a> |
| <span class="sourceLineNo">729</span> LOG.warn("No servers provided in the file: {}." + fileName);<a name="line.729"></a> |
| <span class="sourceLineNo">730</span> return;<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> }<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> Iterator<ServerName> i = regionServers.iterator();<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> while (i.hasNext()) {<a name="line.733"></a> |
| <span class="sourceLineNo">734</span> String rs = i.next().getServerName();<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> String rsPort = rs.split(ServerName.SERVERNAME_SEPARATOR)[0].toLowerCase() + ":"<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> + rs.split(ServerName.SERVERNAME_SEPARATOR)[1];<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> if (isInclude != servers.contains(rsPort)) {<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> i.remove();<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> }<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> }<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> }<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> }<a name="line.742"></a> |
| <span class="sourceLineNo">743</span><a name="line.743"></a> |
| <span class="sourceLineNo">744</span> /**<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> * Exclude master from list of RSs to move regions to<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> */<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> private void stripMaster(List<ServerName> regionServers) throws IOException {<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> ServerName master = admin.getClusterMetrics(EnumSet.of(Option.MASTER)).getMasterName();<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> stripServer(regionServers, master.getHostname(), master.getPort());<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> }<a name="line.750"></a> |
| <span class="sourceLineNo">751</span><a name="line.751"></a> |
| <span class="sourceLineNo">752</span> /**<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> * Remove the servername whose hostname and port portion matches from the passed array of servers.<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> * Returns as side-effect the servername removed.<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> * @return server removed from list of Region Servers<a name="line.755"></a> |
| <span class="sourceLineNo">756</span> */<a name="line.756"></a> |
| <span class="sourceLineNo">757</span> private ServerName stripServer(List<ServerName> regionServers, String hostname, int port) {<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> for (Iterator<ServerName> iter = regionServers.iterator(); iter.hasNext();) {<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> ServerName server = iter.next();<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> if (<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> server.getAddress().getHostName().equalsIgnoreCase(hostname)<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> && server.getAddress().getPort() == port<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> ) {<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> iter.remove();<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> return server;<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> }<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> }<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> return null;<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> }<a name="line.769"></a> |
| <span class="sourceLineNo">770</span><a name="line.770"></a> |
| <span class="sourceLineNo">771</span> @Override<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> protected void addOptions() {<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> this.addRequiredOptWithArg("r", "regionserverhost", "region server <hostname>|<hostname:port>");<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> this.addRequiredOptWithArg("o", "operation", "Expected: load/unload/unload_from_rack");<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> this.addOptWithArg("m", "maxthreads",<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> "Define the maximum number of threads to use to unload and reload the regions");<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> this.addOptWithArg("x", "excludefile",<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> "File with <hostname:port> per line to exclude as unload targets; default excludes only "<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> + "target host; useful for rack decommisioning.");<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> this.addOptWithArg("d", "designatedfile",<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> "File with <hostname:port> per line as unload targets;" + "default is all online hosts");<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> this.addOptWithArg("f", "filename",<a name="line.782"></a> |
| <span class="sourceLineNo">783</span> "File to save regions list into unloading, or read from loading; "<a name="line.783"></a> |
| <span class="sourceLineNo">784</span> + "default /tmp/<usernamehostname:port>");<a name="line.784"></a> |
| <span class="sourceLineNo">785</span> this.addOptNoArg("n", "noack",<a name="line.785"></a> |
| <span class="sourceLineNo">786</span> "Turn on No-Ack mode(default: false) which won't check if region is online on target "<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> + "RegionServer, hence best effort. This is more performant in unloading and loading "<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> + "but might lead to region being unavailable for some time till master reassigns it "<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> + "in case the move failed");<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> this.addOptWithArg("t", "timeout", "timeout in seconds after which the tool will exit "<a name="line.790"></a> |
| <span class="sourceLineNo">791</span> + "irrespective of whether it finished or not;default Integer.MAX_VALUE");<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> }<a name="line.792"></a> |
| <span class="sourceLineNo">793</span><a name="line.793"></a> |
| <span class="sourceLineNo">794</span> @Override<a name="line.794"></a> |
| <span class="sourceLineNo">795</span> protected void processOptions(CommandLine cmd) {<a name="line.795"></a> |
| <span class="sourceLineNo">796</span> String hostname = cmd.getOptionValue("r");<a name="line.796"></a> |
| <span class="sourceLineNo">797</span> rmbuilder = new RegionMoverBuilder(hostname);<a name="line.797"></a> |
| <span class="sourceLineNo">798</span> if (cmd.hasOption('m')) {<a name="line.798"></a> |
| <span class="sourceLineNo">799</span> rmbuilder.maxthreads(Integer.parseInt(cmd.getOptionValue('m')));<a name="line.799"></a> |
| <span class="sourceLineNo">800</span> }<a name="line.800"></a> |
| <span class="sourceLineNo">801</span> if (cmd.hasOption('n')) {<a name="line.801"></a> |
| <span class="sourceLineNo">802</span> rmbuilder.ack(false);<a name="line.802"></a> |
| <span class="sourceLineNo">803</span> }<a name="line.803"></a> |
| <span class="sourceLineNo">804</span> if (cmd.hasOption('f')) {<a name="line.804"></a> |
| <span class="sourceLineNo">805</span> rmbuilder.filename(cmd.getOptionValue('f'));<a name="line.805"></a> |
| <span class="sourceLineNo">806</span> }<a name="line.806"></a> |
| <span class="sourceLineNo">807</span> if (cmd.hasOption('x')) {<a name="line.807"></a> |
| <span class="sourceLineNo">808</span> rmbuilder.excludeFile(cmd.getOptionValue('x'));<a name="line.808"></a> |
| <span class="sourceLineNo">809</span> }<a name="line.809"></a> |
| <span class="sourceLineNo">810</span> if (cmd.hasOption('d')) {<a name="line.810"></a> |
| <span class="sourceLineNo">811</span> rmbuilder.designatedFile(cmd.getOptionValue('d'));<a name="line.811"></a> |
| <span class="sourceLineNo">812</span> }<a name="line.812"></a> |
| <span class="sourceLineNo">813</span> if (cmd.hasOption('t')) {<a name="line.813"></a> |
| <span class="sourceLineNo">814</span> rmbuilder.timeout(Integer.parseInt(cmd.getOptionValue('t')));<a name="line.814"></a> |
| <span class="sourceLineNo">815</span> }<a name="line.815"></a> |
| <span class="sourceLineNo">816</span> this.loadUnload = cmd.getOptionValue("o").toLowerCase(Locale.ROOT);<a name="line.816"></a> |
| <span class="sourceLineNo">817</span> }<a name="line.817"></a> |
| <span class="sourceLineNo">818</span><a name="line.818"></a> |
| <span class="sourceLineNo">819</span> @Override<a name="line.819"></a> |
| <span class="sourceLineNo">820</span> protected int doWork() throws Exception {<a name="line.820"></a> |
| <span class="sourceLineNo">821</span> boolean success;<a name="line.821"></a> |
| <span class="sourceLineNo">822</span> try (RegionMover rm = rmbuilder.build()) {<a name="line.822"></a> |
| <span class="sourceLineNo">823</span> if (loadUnload.equalsIgnoreCase("load")) {<a name="line.823"></a> |
| <span class="sourceLineNo">824</span> success = rm.load();<a name="line.824"></a> |
| <span class="sourceLineNo">825</span> } else if (loadUnload.equalsIgnoreCase("unload")) {<a name="line.825"></a> |
| <span class="sourceLineNo">826</span> success = rm.unload();<a name="line.826"></a> |
| <span class="sourceLineNo">827</span> } else if (loadUnload.equalsIgnoreCase("unload_from_rack")) {<a name="line.827"></a> |
| <span class="sourceLineNo">828</span> success = rm.unloadFromRack();<a name="line.828"></a> |
| <span class="sourceLineNo">829</span> } else {<a name="line.829"></a> |
| <span class="sourceLineNo">830</span> printUsage();<a name="line.830"></a> |
| <span class="sourceLineNo">831</span> success = false;<a name="line.831"></a> |
| <span class="sourceLineNo">832</span> }<a name="line.832"></a> |
| <span class="sourceLineNo">833</span> }<a name="line.833"></a> |
| <span class="sourceLineNo">834</span> return (success ? 0 : 1);<a name="line.834"></a> |
| <span class="sourceLineNo">835</span> }<a name="line.835"></a> |
| <span class="sourceLineNo">836</span><a name="line.836"></a> |
| <span class="sourceLineNo">837</span> public static void main(String[] args) {<a name="line.837"></a> |
| <span class="sourceLineNo">838</span> try (RegionMover mover = new RegionMover()) {<a name="line.838"></a> |
| <span class="sourceLineNo">839</span> mover.doStaticMain(args);<a name="line.839"></a> |
| <span class="sourceLineNo">840</span> }<a name="line.840"></a> |
| <span class="sourceLineNo">841</span> }<a name="line.841"></a> |
| <span class="sourceLineNo">842</span>}<a name="line.842"></a> |
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| </div> |
| </body> |
| </html> |
