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From git-site-r...@apache.org
Subject [02/51] [partial] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Sat, 03 Jun 2017 14:59:30 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c9d35424/testdevapidocs/src-html/org/apache/hadoop/hbase/client/TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowOrStopCopro.html
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diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/client/TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowOrStopCopro.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/client/TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowOrStopCopro.html
new file mode 100644
index 0000000..fd80980
--- /dev/null
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/client/TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowOrStopCopro.html
@@ -0,0 +1,853 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<span class="sourceLineNo">002</span> *<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * or more contributor license agreements.  See the NOTICE file<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * regarding copyright ownership.  The ASF licenses this file<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * with the License.  You may obtain a copy of the License at<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a>
+<span class="sourceLineNo">012</span> *<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a>
+<span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a>
+<span class="sourceLineNo">018</span> */<a name="line.18"></a>
+<span class="sourceLineNo">019</span><a name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>package org.apache.hadoop.hbase.client;<a name="line.21"></a>
+<span class="sourceLineNo">022</span><a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.ArrayList;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.Arrays;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.CountDownLatch;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.TimeUnit;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.30"></a>
+<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.LogFactory;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.Path;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.Cell;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HBaseTestingUtility;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HConstants;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.ServerName;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.TableName;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.Waiter;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.replication.ReplicationAdmin;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.coprocessor.ObserverContext;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.coprocessor.RegionObserver;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.ipc.RpcControllerFactory;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.RegionScanner;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.StorefileRefresherChore;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.testclassification.ClientTests;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.zookeeper.MiniZooKeeperCluster;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.junit.AfterClass;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.junit.Assert;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.junit.BeforeClass;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.junit.Test;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.junit.experimental.categories.Category;<a name="line.66"></a>
+<span class="sourceLineNo">067</span><a name="line.67"></a>
+<span class="sourceLineNo">068</span>@Category({MediumTests.class, ClientTests.class})<a name="line.68"></a>
+<span class="sourceLineNo">069</span>public class TestReplicaWithCluster {<a name="line.69"></a>
+<span class="sourceLineNo">070</span>  private static final Log LOG = LogFactory.getLog(TestReplicaWithCluster.class);<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span>  private static final int NB_SERVERS = 3;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>  private static final byte[] row = TestReplicaWithCluster.class.getName().getBytes();<a name="line.73"></a>
+<span class="sourceLineNo">074</span>  private static final HBaseTestingUtility HTU = new HBaseTestingUtility();<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span>  // second minicluster used in testing of replication<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  private static HBaseTestingUtility HTU2;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>  private static final byte[] f = HConstants.CATALOG_FAMILY;<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span>  private final static int REFRESH_PERIOD = 1000;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  private final static int META_SCAN_TIMEOUT_IN_MILLISEC = 200;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  /**<a name="line.83"></a>
+<span class="sourceLineNo">084</span>   * This copro is used to synchronize the tests.<a name="line.84"></a>
+<span class="sourceLineNo">085</span>   */<a name="line.85"></a>
+<span class="sourceLineNo">086</span>  public static class SlowMeCopro implements RegionObserver {<a name="line.86"></a>
+<span class="sourceLineNo">087</span>    static final AtomicLong sleepTime = new AtomicLong(0);<a name="line.87"></a>
+<span class="sourceLineNo">088</span>    static final AtomicReference&lt;CountDownLatch&gt; cdl = new AtomicReference&lt;&gt;(new CountDownLatch(0));<a name="line.88"></a>
+<span class="sourceLineNo">089</span><a name="line.89"></a>
+<span class="sourceLineNo">090</span>    public SlowMeCopro() {<a name="line.90"></a>
+<span class="sourceLineNo">091</span>    }<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span>    @Override<a name="line.93"></a>
+<span class="sourceLineNo">094</span>    public void preGetOp(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; e,<a name="line.94"></a>
+<span class="sourceLineNo">095</span>                         final Get get, final List&lt;Cell&gt; results) throws IOException {<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span>      if (e.getEnvironment().getRegion().getRegionInfo().getReplicaId() == 0) {<a name="line.97"></a>
+<span class="sourceLineNo">098</span>        CountDownLatch latch = cdl.get();<a name="line.98"></a>
+<span class="sourceLineNo">099</span>        try {<a name="line.99"></a>
+<span class="sourceLineNo">100</span>          if (sleepTime.get() &gt; 0) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span>            LOG.info("Sleeping for " + sleepTime.get() + " ms");<a name="line.101"></a>
+<span class="sourceLineNo">102</span>            Thread.sleep(sleepTime.get());<a name="line.102"></a>
+<span class="sourceLineNo">103</span>          } else if (latch.getCount() &gt; 0) {<a name="line.103"></a>
+<span class="sourceLineNo">104</span>            LOG.info("Waiting for the counterCountDownLatch");<a name="line.104"></a>
+<span class="sourceLineNo">105</span>            latch.await(2, TimeUnit.MINUTES); // To help the tests to finish.<a name="line.105"></a>
+<span class="sourceLineNo">106</span>            if (latch.getCount() &gt; 0) {<a name="line.106"></a>
+<span class="sourceLineNo">107</span>              throw new RuntimeException("Can't wait more");<a name="line.107"></a>
+<span class="sourceLineNo">108</span>            }<a name="line.108"></a>
+<span class="sourceLineNo">109</span>          }<a name="line.109"></a>
+<span class="sourceLineNo">110</span>        } catch (InterruptedException e1) {<a name="line.110"></a>
+<span class="sourceLineNo">111</span>          LOG.error(e1);<a name="line.111"></a>
+<span class="sourceLineNo">112</span>        }<a name="line.112"></a>
+<span class="sourceLineNo">113</span>      } else {<a name="line.113"></a>
+<span class="sourceLineNo">114</span>        LOG.info("We're not the primary replicas.");<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>  }<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span>  /**<a name="line.119"></a>
+<span class="sourceLineNo">120</span>   * This copro is used to simulate region server down exception for Get and Scan<a name="line.120"></a>
+<span class="sourceLineNo">121</span>   */<a name="line.121"></a>
+<span class="sourceLineNo">122</span>  public static class RegionServerStoppedCopro implements RegionObserver {<a name="line.122"></a>
+<span class="sourceLineNo">123</span><a name="line.123"></a>
+<span class="sourceLineNo">124</span>    public RegionServerStoppedCopro() {<a name="line.124"></a>
+<span class="sourceLineNo">125</span>    }<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span>    @Override<a name="line.127"></a>
+<span class="sourceLineNo">128</span>    public void preGetOp(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; e,<a name="line.128"></a>
+<span class="sourceLineNo">129</span>        final Get get, final List&lt;Cell&gt; results) throws IOException {<a name="line.129"></a>
+<span class="sourceLineNo">130</span><a name="line.130"></a>
+<span class="sourceLineNo">131</span>      int replicaId = e.getEnvironment().getRegion().getRegionInfo().getReplicaId();<a name="line.131"></a>
+<span class="sourceLineNo">132</span><a name="line.132"></a>
+<span class="sourceLineNo">133</span>      // Fail for the primary replica and replica 1<a name="line.133"></a>
+<span class="sourceLineNo">134</span>      if (e.getEnvironment().getRegion().getRegionInfo().getReplicaId() &lt;= 1) {<a name="line.134"></a>
+<span class="sourceLineNo">135</span>        LOG.info("Throw Region Server Stopped Exceptoin for replica id " + replicaId);<a name="line.135"></a>
+<span class="sourceLineNo">136</span>        throw new RegionServerStoppedException("Server " +<a name="line.136"></a>
+<span class="sourceLineNo">137</span>            e.getEnvironment().getRegionServerServices().getServerName()<a name="line.137"></a>
+<span class="sourceLineNo">138</span>            + " not running");<a name="line.138"></a>
+<span class="sourceLineNo">139</span>      } else {<a name="line.139"></a>
+<span class="sourceLineNo">140</span>        LOG.info("We're replica region " + replicaId);<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><a name="line.143"></a>
+<span class="sourceLineNo">144</span>    @Override<a name="line.144"></a>
+<span class="sourceLineNo">145</span>    public RegionScanner preScannerOpen(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; e,<a name="line.145"></a>
+<span class="sourceLineNo">146</span>        final Scan scan, final RegionScanner s) throws IOException {<a name="line.146"></a>
+<span class="sourceLineNo">147</span><a name="line.147"></a>
+<span class="sourceLineNo">148</span>      int replicaId = e.getEnvironment().getRegion().getRegionInfo().getReplicaId();<a name="line.148"></a>
+<span class="sourceLineNo">149</span><a name="line.149"></a>
+<span class="sourceLineNo">150</span>      // Fail for the primary replica and replica 1<a name="line.150"></a>
+<span class="sourceLineNo">151</span>      if (e.getEnvironment().getRegion().getRegionInfo().getReplicaId() &lt;= 1) {<a name="line.151"></a>
+<span class="sourceLineNo">152</span>        LOG.info("Throw Region Server Stopped Exceptoin for replica id " + replicaId);<a name="line.152"></a>
+<span class="sourceLineNo">153</span>        throw new RegionServerStoppedException("Server " +<a name="line.153"></a>
+<span class="sourceLineNo">154</span>            e.getEnvironment().getRegionServerServices().getServerName()<a name="line.154"></a>
+<span class="sourceLineNo">155</span>            + " not running");<a name="line.155"></a>
+<span class="sourceLineNo">156</span>      } else {<a name="line.156"></a>
+<span class="sourceLineNo">157</span>        LOG.info("We're replica region " + replicaId);<a name="line.157"></a>
+<span class="sourceLineNo">158</span>      }<a name="line.158"></a>
+<span class="sourceLineNo">159</span><a name="line.159"></a>
+<span class="sourceLineNo">160</span>      return null;<a name="line.160"></a>
+<span class="sourceLineNo">161</span>    }<a name="line.161"></a>
+<span class="sourceLineNo">162</span>  }<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span>  /**<a name="line.164"></a>
+<span class="sourceLineNo">165</span>   * This copro is used to slow down the primary meta region scan a bit<a name="line.165"></a>
+<span class="sourceLineNo">166</span>   */<a name="line.166"></a>
+<span class="sourceLineNo">167</span>  public static class RegionServerHostingPrimayMetaRegionSlowOrStopCopro implements RegionObserver {<a name="line.167"></a>
+<span class="sourceLineNo">168</span>    static boolean slowDownPrimaryMetaScan = false;<a name="line.168"></a>
+<span class="sourceLineNo">169</span>    static boolean throwException = false;<a name="line.169"></a>
+<span class="sourceLineNo">170</span><a name="line.170"></a>
+<span class="sourceLineNo">171</span>    @Override<a name="line.171"></a>
+<span class="sourceLineNo">172</span>    public void preGetOp(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; e,<a name="line.172"></a>
+<span class="sourceLineNo">173</span>        final Get get, final List&lt;Cell&gt; results) throws IOException {<a name="line.173"></a>
+<span class="sourceLineNo">174</span><a name="line.174"></a>
+<span class="sourceLineNo">175</span>      int replicaId = e.getEnvironment().getRegion().getRegionInfo().getReplicaId();<a name="line.175"></a>
+<span class="sourceLineNo">176</span><a name="line.176"></a>
+<span class="sourceLineNo">177</span>      // Fail for the primary replica, but not for meta<a name="line.177"></a>
+<span class="sourceLineNo">178</span>      if (throwException) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span>        if (!e.getEnvironment().getRegion().getRegionInfo().isMetaRegion() &amp;&amp; (replicaId == 0)) {<a name="line.179"></a>
+<span class="sourceLineNo">180</span>          LOG.info("Get, throw Region Server Stopped Exceptoin for region " + e.getEnvironment()<a name="line.180"></a>
+<span class="sourceLineNo">181</span>              .getRegion().getRegionInfo());<a name="line.181"></a>
+<span class="sourceLineNo">182</span>          throw new RegionServerStoppedException("Server " +<a name="line.182"></a>
+<span class="sourceLineNo">183</span>              e.getEnvironment().getRegionServerServices().getServerName() + " not running");<a name="line.183"></a>
+<span class="sourceLineNo">184</span>        }<a name="line.184"></a>
+<span class="sourceLineNo">185</span>      } else {<a name="line.185"></a>
+<span class="sourceLineNo">186</span>        LOG.info("Get, We're replica region " + replicaId);<a name="line.186"></a>
+<span class="sourceLineNo">187</span>      }<a name="line.187"></a>
+<span class="sourceLineNo">188</span>    }<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span>    @Override<a name="line.190"></a>
+<span class="sourceLineNo">191</span>    public RegionScanner preScannerOpen(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; e,<a name="line.191"></a>
+<span class="sourceLineNo">192</span>        final Scan scan, final RegionScanner s) throws IOException {<a name="line.192"></a>
+<span class="sourceLineNo">193</span><a name="line.193"></a>
+<span class="sourceLineNo">194</span>      int replicaId = e.getEnvironment().getRegion().getRegionInfo().getReplicaId();<a name="line.194"></a>
+<span class="sourceLineNo">195</span><a name="line.195"></a>
+<span class="sourceLineNo">196</span>      // Slow down with the primary meta region scan<a name="line.196"></a>
+<span class="sourceLineNo">197</span>      if (e.getEnvironment().getRegion().getRegionInfo().isMetaRegion() &amp;&amp; (replicaId == 0)) {<a name="line.197"></a>
+<span class="sourceLineNo">198</span>        if (slowDownPrimaryMetaScan) {<a name="line.198"></a>
+<span class="sourceLineNo">199</span>          LOG.info("Scan with primary meta region, slow down a bit");<a name="line.199"></a>
+<span class="sourceLineNo">200</span>          try {<a name="line.200"></a>
+<span class="sourceLineNo">201</span>            Thread.sleep(META_SCAN_TIMEOUT_IN_MILLISEC - 50);<a name="line.201"></a>
+<span class="sourceLineNo">202</span>          } catch (InterruptedException ie) {<a name="line.202"></a>
+<span class="sourceLineNo">203</span>            // Ingore<a name="line.203"></a>
+<span class="sourceLineNo">204</span>          }<a name="line.204"></a>
+<span class="sourceLineNo">205</span>        }<a name="line.205"></a>
+<span class="sourceLineNo">206</span><a name="line.206"></a>
+<span class="sourceLineNo">207</span>        // Fail for the primary replica<a name="line.207"></a>
+<span class="sourceLineNo">208</span>        if (throwException) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span>          LOG.info("Scan, throw Region Server Stopped Exceptoin for replica " + e.getEnvironment()<a name="line.209"></a>
+<span class="sourceLineNo">210</span>              .getRegion().getRegionInfo());<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span>          throw new RegionServerStoppedException("Server " +<a name="line.212"></a>
+<span class="sourceLineNo">213</span>              e.getEnvironment().getRegionServerServices().getServerName() + " not running");<a name="line.213"></a>
+<span class="sourceLineNo">214</span>        } else {<a name="line.214"></a>
+<span class="sourceLineNo">215</span>          LOG.info("Scan, We're replica region " + replicaId);<a name="line.215"></a>
+<span class="sourceLineNo">216</span>        }<a name="line.216"></a>
+<span class="sourceLineNo">217</span>      } else {<a name="line.217"></a>
+<span class="sourceLineNo">218</span>        LOG.info("Scan, We're replica region " + replicaId);<a name="line.218"></a>
+<span class="sourceLineNo">219</span>      }<a name="line.219"></a>
+<span class="sourceLineNo">220</span><a name="line.220"></a>
+<span class="sourceLineNo">221</span>      return null;<a name="line.221"></a>
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+<span class="sourceLineNo">676</span>      ((ConnectionImplementation) HTU.getAdmin().getConnection()).setUseMetaReplicas(false);<a name="line.676"></a>
+<span class="sourceLineNo">677</span>      HTU.getAdmin().setBalancerRunning(true, true);<a name="line.677"></a>
+<span class="sourceLineNo">678</span>      HTU.getAdmin().disableTable(hdt.getTableName());<a name="line.678"></a>
+<span class="sourceLineNo">679</span>      HTU.deleteTable(hdt.getTableName());<a name="line.679"></a>
+<span class="sourceLineNo">680</span>    }<a name="line.680"></a>
+<span class="sourceLineNo">681</span>  }<a name="line.681"></a>
+<span class="sourceLineNo">682</span><a name="line.682"></a>
+<span class="sourceLineNo">683</span><a name="line.683"></a>
+<span class="sourceLineNo">684</span>  // This test is to simulate the case that the meta region and the primary user region<a name="line.684"></a>
+<span class="sourceLineNo">685</span>  // are down, hbase client is able to access user replica regions and return stale data.<a name="line.685"></a>
+<span class="sourceLineNo">686</span>  // Meta replica is enabled to show the case that the meta replica region could be out of sync<a name="line.686"></a>
+<span class="sourceLineNo">687</span>  // with the primary meta region.<a name="line.687"></a>
+<span class="sourceLineNo">688</span>  @Test<a name="line.688"></a>
+<span class="sourceLineNo">689</span>  public void testReplicaGetWithPrimaryAndMetaDown() throws IOException, InterruptedException {<a name="line.689"></a>
+<span class="sourceLineNo">690</span>    HTU.getAdmin().setBalancerRunning(false, true);<a name="line.690"></a>
+<span class="sourceLineNo">691</span><a name="line.691"></a>
+<span class="sourceLineNo">692</span>    ((ConnectionImplementation)HTU.getAdmin().getConnection()).setUseMetaReplicas(true);<a name="line.692"></a>
+<span class="sourceLineNo">693</span><a name="line.693"></a>
+<span class="sourceLineNo">694</span>    // Create table then get the single region for our new table.<a name="line.694"></a>
+<span class="sourceLineNo">695</span>    HTableDescriptor hdt = HTU.createTableDescriptor("testReplicaGetWithPrimaryAndMetaDown");<a name="line.695"></a>
+<span class="sourceLineNo">696</span>    hdt.setRegionReplication(2);<a name="line.696"></a>
+<span class="sourceLineNo">697</span>    try {<a name="line.697"></a>
+<span class="sourceLineNo">698</span><a name="line.698"></a>
+<span class="sourceLineNo">699</span>      Table table = HTU.createTable(hdt, new byte[][] { f }, null);<a name="line.699"></a>
+<span class="sourceLineNo">700</span><a name="line.700"></a>
+<span class="sourceLineNo">701</span>      // Get Meta location<a name="line.701"></a>
+<span class="sourceLineNo">702</span>      RegionLocations mrl = ((ClusterConnection) HTU.getConnection())<a name="line.702"></a>
+<span class="sourceLineNo">703</span>          .locateRegion(TableName.META_TABLE_NAME,<a name="line.703"></a>
+<span class="sourceLineNo">704</span>              HConstants.EMPTY_START_ROW, false, false);<a name="line.704"></a>
+<span class="sourceLineNo">705</span><a name="line.705"></a>
+<span class="sourceLineNo">706</span>      // Get user table location<a name="line.706"></a>
+<span class="sourceLineNo">707</span>      RegionLocations url = ((ClusterConnection) HTU.getConnection())<a name="line.707"></a>
+<span class="sourceLineNo">708</span>          .locateRegion(hdt.getTableName(), row, false, false);<a name="line.708"></a>
+<span class="sourceLineNo">709</span><a name="line.709"></a>
+<span class="sourceLineNo">710</span>      // Make sure that user primary region is co-hosted with the meta region<a name="line.710"></a>
+<span class="sourceLineNo">711</span>      if (!url.getDefaultRegionLocation().getServerName().equals(<a name="line.711"></a>
+<span class="sourceLineNo">712</span>          mrl.getDefaultRegionLocation().getServerName())) {<a name="line.712"></a>
+<span class="sourceLineNo">713</span>        HTU.moveRegionAndWait(url.getDefaultRegionLocation().getRegionInfo(),<a name="line.713"></a>
+<span class="sourceLineNo">714</span>            mrl.getDefaultRegionLocation().getServerName());<a name="line.714"></a>
+<span class="sourceLineNo">715</span>      }<a name="line.715"></a>
+<span class="sourceLineNo">716</span><a name="line.716"></a>
+<span class="sourceLineNo">717</span>      // Make sure that the user replica region is not hosted by the same region server with<a name="line.717"></a>
+<span class="sourceLineNo">718</span>      // primary<a name="line.718"></a>
+<span class="sourceLineNo">719</span>      if (url.getRegionLocation(1).getServerName().equals(mrl.getDefaultRegionLocation()<a name="line.719"></a>
+<span class="sourceLineNo">720</span>          .getServerName())) {<a name="line.720"></a>
+<span class="sourceLineNo">721</span>        HTU.moveRegionAndWait(url.getRegionLocation(1).getRegionInfo(),<a name="line.721"></a>
+<span class="sourceLineNo">722</span>            url.getDefaultRegionLocation().getServerName());<a name="line.722"></a>
+<span class="sourceLineNo">723</span>      }<a name="line.723"></a>
+<span class="sourceLineNo">724</span><a name="line.724"></a>
+<span class="sourceLineNo">725</span>      // Wait until the meta table is updated with new location info<a name="line.725"></a>
+<span class="sourceLineNo">726</span>      while (true) {<a name="line.726"></a>
+<span class="sourceLineNo">727</span>        mrl = ((ClusterConnection) HTU.getConnection())<a name="line.727"></a>
+<span class="sourceLineNo">728</span>            .locateRegion(TableName.META_TABLE_NAME, HConstants.EMPTY_START_ROW, false, false);<a name="line.728"></a>
+<span class="sourceLineNo">729</span><a name="line.729"></a>
+<span class="sourceLineNo">730</span>        // Get user table location<a name="line.730"></a>
+<span class="sourceLineNo">731</span>        url = ((ClusterConnection) HTU.getConnection())<a name="line.731"></a>
+<span class="sourceLineNo">732</span>            .locateRegion(hdt.getTableName(), row, false, true);<a name="line.732"></a>
+<span class="sourceLineNo">733</span><a name="line.733"></a>
+<span class="sourceLineNo">734</span>        LOG.info("meta locations " + mrl);<a name="line.734"></a>
+<span class="sourceLineNo">735</span>        LOG.info("table locations " + url);<a name="line.735"></a>
+<span class="sourceLineNo">736</span>        ServerName a = url.getDefaultRegionLocation().getServerName();<a name="line.736"></a>
+<span class="sourceLineNo">737</span>        ServerName b = mrl.getDefaultRegionLocation().getServerName();<a name="line.737"></a>
+<span class="sourceLineNo">738</span>        if(a.equals(b)) {<a name="line.738"></a>
+<span class="sourceLineNo">739</span>          break;<a name="line.739"></a>
+<span class="sourceLineNo">740</span>        } else {<a name="line.740"></a>
+<span class="sourceLineNo">741</span>          LOG.info("Waiting for new region info to be updated in meta table");<a name="line.741"></a>
+<span class="sourceLineNo">742</span>          Thread.sleep(100);<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><a name="line.745"></a>
+<span class="sourceLineNo">746</span>      Put p = new Put(row);<a name="line.746"></a>
+<span class="sourceLineNo">747</span>      p.addColumn(f, row, row);<a name="line.747"></a>
+<span class="sourceLineNo">748</span>      table.put(p);<a name="line.748"></a>
+<span class="sourceLineNo">749</span><a name="line.749"></a>
+<span class="sourceLineNo">750</span>      // Flush so it can be picked by the replica refresher thread<a name="line.750"></a>
+<span class="sourceLineNo">751</span>      HTU.flush(table.getName());<a name="line.751"></a>
+<span class="sourceLineNo">752</span><a name="line.752"></a>
+<span class="sourceLineNo">753</span>      // Sleep for some time until data is picked up by replicas<a name="line.753"></a>
+<span class="sourceLineNo">754</span>      try {<a name="line.754"></a>
+<span class="sourceLineNo">755</span>        Thread.sleep(2 * REFRESH_PERIOD);<a name="line.755"></a>
+<span class="sourceLineNo">756</span>      } catch (InterruptedException e1) {<a name="line.756"></a>
+<span class="sourceLineNo">757</span>        LOG.error(e1);<a name="line.757"></a>
+<span class="sourceLineNo">758</span>      }<a name="line.758"></a>
+<span class="sourceLineNo">759</span><a name="line.759"></a>
+<span class="sourceLineNo">760</span>      // Simulating the RS down<a name="line.760"></a>
+<span class="sourceLineNo">761</span>      RegionServerHostingPrimayMetaRegionSlowOrStopCopro.throwException = true;<a name="line.761"></a>
+<span class="sourceLineNo">762</span><a name="line.762"></a>
+<span class="sourceLineNo">763</span>      // The first Get is supposed to succeed<a name="line.763"></a>
+<span class="sourceLineNo">764</span>      Get g = new Get(row);<a name="line.764"></a>
+<span class="sourceLineNo">765</span>      g.setConsistency(Consistency.TIMELINE);<a name="line.765"></a>
+<span class="sourceLineNo">766</span>      Result r = table.get(g);<a name="line.766"></a>
+<span class="sourceLineNo">767</span>      Assert.assertTrue(r.isStale());<a name="line.767"></a>
+<span class="sourceLineNo">768</span><a name="line.768"></a>
+<span class="sourceLineNo">769</span>      // The second Get will succeed as well<a name="line.769"></a>
+<span class="sourceLineNo">770</span>      r = table.get(g);<a name="line.770"></a>
+<span class="sourceLineNo">771</span>      Assert.assertTrue(r.isStale());<a name="line.771"></a>
+<span class="sourceLineNo">772</span><a name="line.772"></a>
+<span class="sourceLineNo">773</span>    } finally {<a name="line.773"></a>
+<span class="sourceLineNo">774</span>      ((ConnectionImplementation)HTU.getAdmin().getConnection()).setUseMetaReplicas(false);<a name="line.774"></a>
+<span class="sourceLineNo">775</span>      RegionServerHostingPrimayMetaRegionSlowOrStopCopro.throwException = false;<a name="line.775"></a>
+<span class="sourceLineNo">776</span>      HTU.getAdmin().setBalancerRunning(true, true);<a name="line.776"></a>
+<span class="sourceLineNo">777</span>      HTU.getAdmin().disableTable(hdt.getTableName());<a name="line.777"></a>
+<span class="sourceLineNo">778</span>      HTU.deleteTable(hdt.getTableName());<a name="line.778"></a>
+<span class="sourceLineNo">779</span>    }<a name="line.779"></a>
+<span class="sourceLineNo">780</span>  }<a name="line.780"></a>
+<span class="sourceLineNo">781</span>}<a name="line.781"></a>
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+</pre>
+</div>
+</body>
+</html>


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