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<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.replication;</span>
<span class="source-line-no">019</span><span id="line-19"></span>
<span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.assertEquals;</span>
<span class="source-line-no">021</span><span id="line-21">import static org.mockito.Mockito.mock;</span>
<span class="source-line-no">022</span><span id="line-22">import static org.mockito.Mockito.when;</span>
<span class="source-line-no">023</span><span id="line-23"></span>
<span class="source-line-no">024</span><span id="line-24">import java.io.IOException;</span>
<span class="source-line-no">025</span><span id="line-25">import java.net.URI;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.Collection;</span>
<span class="source-line-no">027</span><span id="line-27">import java.util.List;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HBaseTestingUtil;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.ServerName;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.client.AsyncClusterConnection;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.client.AsyncRegionServerAdmin;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.replication.HBaseReplicationEndpoint.SinkPeer;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.testclassification.ReplicationTests;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">037</span><span id="line-37">import org.junit.Before;</span>
<span class="source-line-no">038</span><span id="line-38">import org.junit.ClassRule;</span>
<span class="source-line-no">039</span><span id="line-39">import org.junit.Test;</span>
<span class="source-line-no">040</span><span id="line-40">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">041</span><span id="line-41"></span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hbase.thirdparty.com.google.common.collect.Lists;</span>
<span class="source-line-no">043</span><span id="line-43"></span>
<span class="source-line-no">044</span><span id="line-44">@Category({ ReplicationTests.class, SmallTests.class })</span>
<span class="source-line-no">045</span><span id="line-45">public class TestHBaseReplicationEndpoint {</span>
<span class="source-line-no">046</span><span id="line-46"></span>
<span class="source-line-no">047</span><span id="line-47"> @ClassRule</span>
<span class="source-line-no">048</span><span id="line-48"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">049</span><span id="line-49"> HBaseClassTestRule.forClass(TestHBaseReplicationEndpoint.class);</span>
<span class="source-line-no">050</span><span id="line-50"></span>
<span class="source-line-no">051</span><span id="line-51"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span>
<span class="source-line-no">052</span><span id="line-52"></span>
<span class="source-line-no">053</span><span id="line-53"> private HBaseReplicationEndpoint endpoint;</span>
<span class="source-line-no">054</span><span id="line-54"></span>
<span class="source-line-no">055</span><span id="line-55"> @Before</span>
<span class="source-line-no">056</span><span id="line-56"> public void setUp() throws Exception {</span>
<span class="source-line-no">057</span><span id="line-57"> ReplicationPeer replicationPeer = mock(ReplicationPeer.class);</span>
<span class="source-line-no">058</span><span id="line-58"> ReplicationPeerConfig peerConfig = mock(ReplicationPeerConfig.class);</span>
<span class="source-line-no">059</span><span id="line-59"> when(replicationPeer.getPeerConfig()).thenReturn(peerConfig);</span>
<span class="source-line-no">060</span><span id="line-60"> when(peerConfig.getClusterKey()).thenReturn("hbase+zk://server1:2181/hbase");</span>
<span class="source-line-no">061</span><span id="line-61"> ReplicationEndpoint.Context context =</span>
<span class="source-line-no">062</span><span id="line-62"> new ReplicationEndpoint.Context(null, UTIL.getConfiguration(), UTIL.getConfiguration(), null,</span>
<span class="source-line-no">063</span><span id="line-63"> null, null, replicationPeer, null, null, null);</span>
<span class="source-line-no">064</span><span id="line-64"> endpoint = new DummyHBaseReplicationEndpoint();</span>
<span class="source-line-no">065</span><span id="line-65"> endpoint.init(context);</span>
<span class="source-line-no">066</span><span id="line-66"> }</span>
<span class="source-line-no">067</span><span id="line-67"></span>
<span class="source-line-no">068</span><span id="line-68"> @Test</span>
<span class="source-line-no">069</span><span id="line-69"> public void testChooseSinks() {</span>
<span class="source-line-no">070</span><span id="line-70"> List&lt;ServerName&gt; serverNames = Lists.newArrayList();</span>
<span class="source-line-no">071</span><span id="line-71"> int totalServers = 20;</span>
<span class="source-line-no">072</span><span id="line-72"> for (int i = 0; i &lt; totalServers; i++) {</span>
<span class="source-line-no">073</span><span id="line-73"> serverNames.add(mock(ServerName.class));</span>
<span class="source-line-no">074</span><span id="line-74"> }</span>
<span class="source-line-no">075</span><span id="line-75"> ((DummyHBaseReplicationEndpoint) endpoint).setRegionServers(serverNames);</span>
<span class="source-line-no">076</span><span id="line-76"> endpoint.chooseSinks();</span>
<span class="source-line-no">077</span><span id="line-77"> int expected = (int) (totalServers * HBaseReplicationEndpoint.DEFAULT_REPLICATION_SOURCE_RATIO);</span>
<span class="source-line-no">078</span><span id="line-78"> assertEquals(expected, endpoint.getNumSinks());</span>
<span class="source-line-no">079</span><span id="line-79"> }</span>
<span class="source-line-no">080</span><span id="line-80"></span>
<span class="source-line-no">081</span><span id="line-81"> @Test</span>
<span class="source-line-no">082</span><span id="line-82"> public void testChooseSinksLessThanRatioAvailable() {</span>
<span class="source-line-no">083</span><span id="line-83"> List&lt;ServerName&gt; serverNames =</span>
<span class="source-line-no">084</span><span id="line-84"> Lists.newArrayList(mock(ServerName.class), mock(ServerName.class));</span>
<span class="source-line-no">085</span><span id="line-85"> ((DummyHBaseReplicationEndpoint) endpoint).setRegionServers(serverNames);</span>
<span class="source-line-no">086</span><span id="line-86"> endpoint.chooseSinks();</span>
<span class="source-line-no">087</span><span id="line-87"> assertEquals(1, endpoint.getNumSinks());</span>
<span class="source-line-no">088</span><span id="line-88"> }</span>
<span class="source-line-no">089</span><span id="line-89"></span>
<span class="source-line-no">090</span><span id="line-90"> @Test</span>
<span class="source-line-no">091</span><span id="line-91"> public void testReportBadSink() {</span>
<span class="source-line-no">092</span><span id="line-92"> ServerName serverNameA = mock(ServerName.class);</span>
<span class="source-line-no">093</span><span id="line-93"> ServerName serverNameB = mock(ServerName.class);</span>
<span class="source-line-no">094</span><span id="line-94"> ((DummyHBaseReplicationEndpoint) endpoint)</span>
<span class="source-line-no">095</span><span id="line-95"> .setRegionServers(Lists.newArrayList(serverNameA, serverNameB));</span>
<span class="source-line-no">096</span><span id="line-96"> endpoint.chooseSinks();</span>
<span class="source-line-no">097</span><span id="line-97"> // Sanity check</span>
<span class="source-line-no">098</span><span id="line-98"> assertEquals(1, endpoint.getNumSinks());</span>
<span class="source-line-no">099</span><span id="line-99"></span>
<span class="source-line-no">100</span><span id="line-100"> SinkPeer sinkPeer = new SinkPeer(serverNameA, mock(AsyncRegionServerAdmin.class));</span>
<span class="source-line-no">101</span><span id="line-101"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">102</span><span id="line-102"> // Just reporting a bad sink once shouldn't have an effect</span>
<span class="source-line-no">103</span><span id="line-103"> assertEquals(1, endpoint.getNumSinks());</span>
<span class="source-line-no">104</span><span id="line-104"> }</span>
<span class="source-line-no">105</span><span id="line-105"></span>
<span class="source-line-no">106</span><span id="line-106"> /**</span>
<span class="source-line-no">107</span><span id="line-107"> * Once a SinkPeer has been reported as bad more than BAD_SINK_THRESHOLD times, it should not be</span>
<span class="source-line-no">108</span><span id="line-108"> * replicated to anymore.</span>
<span class="source-line-no">109</span><span id="line-109"> */</span>
<span class="source-line-no">110</span><span id="line-110"> @Test</span>
<span class="source-line-no">111</span><span id="line-111"> public void testReportBadSinkPastThreshold() {</span>
<span class="source-line-no">112</span><span id="line-112"> List&lt;ServerName&gt; serverNames = Lists.newArrayList();</span>
<span class="source-line-no">113</span><span id="line-113"> int totalServers = 30;</span>
<span class="source-line-no">114</span><span id="line-114"> for (int i = 0; i &lt; totalServers; i++) {</span>
<span class="source-line-no">115</span><span id="line-115"> serverNames.add(mock(ServerName.class));</span>
<span class="source-line-no">116</span><span id="line-116"> }</span>
<span class="source-line-no">117</span><span id="line-117"> ((DummyHBaseReplicationEndpoint) endpoint).setRegionServers(serverNames);</span>
<span class="source-line-no">118</span><span id="line-118"> endpoint.chooseSinks();</span>
<span class="source-line-no">119</span><span id="line-119"> // Sanity check</span>
<span class="source-line-no">120</span><span id="line-120"> int expected = (int) (totalServers * HBaseReplicationEndpoint.DEFAULT_REPLICATION_SOURCE_RATIO);</span>
<span class="source-line-no">121</span><span id="line-121"> assertEquals(expected, endpoint.getNumSinks());</span>
<span class="source-line-no">122</span><span id="line-122"></span>
<span class="source-line-no">123</span><span id="line-123"> ServerName badSinkServer0 = endpoint.getSinkServers().get(0);</span>
<span class="source-line-no">124</span><span id="line-124"> SinkPeer sinkPeer = new SinkPeer(badSinkServer0, mock(AsyncRegionServerAdmin.class));</span>
<span class="source-line-no">125</span><span id="line-125"> for (int i = 0; i &lt;= HBaseReplicationEndpoint.DEFAULT_BAD_SINK_THRESHOLD; i++) {</span>
<span class="source-line-no">126</span><span id="line-126"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">127</span><span id="line-127"> }</span>
<span class="source-line-no">128</span><span id="line-128"> // Reporting a bad sink more than the threshold count should remove it</span>
<span class="source-line-no">129</span><span id="line-129"> // from the list of potential sinks</span>
<span class="source-line-no">130</span><span id="line-130"> assertEquals(expected - 1, endpoint.getNumSinks());</span>
<span class="source-line-no">131</span><span id="line-131"></span>
<span class="source-line-no">132</span><span id="line-132"> // now try a sink that has some successes</span>
<span class="source-line-no">133</span><span id="line-133"> ServerName badSinkServer1 = endpoint.getSinkServers().get(0);</span>
<span class="source-line-no">134</span><span id="line-134"> sinkPeer = new SinkPeer(badSinkServer1, mock(AsyncRegionServerAdmin.class));</span>
<span class="source-line-no">135</span><span id="line-135"> for (int i = 0; i &lt; HBaseReplicationEndpoint.DEFAULT_BAD_SINK_THRESHOLD; i++) {</span>
<span class="source-line-no">136</span><span id="line-136"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">137</span><span id="line-137"> }</span>
<span class="source-line-no">138</span><span id="line-138"> endpoint.reportSinkSuccess(sinkPeer); // one success</span>
<span class="source-line-no">139</span><span id="line-139"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">140</span><span id="line-140"> // did not remove the sink, since we had one successful try</span>
<span class="source-line-no">141</span><span id="line-141"> assertEquals(expected - 1, endpoint.getNumSinks());</span>
<span class="source-line-no">142</span><span id="line-142"></span>
<span class="source-line-no">143</span><span id="line-143"> for (int i = 0; i &lt; HBaseReplicationEndpoint.DEFAULT_BAD_SINK_THRESHOLD - 1; i++) {</span>
<span class="source-line-no">144</span><span id="line-144"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">145</span><span id="line-145"> }</span>
<span class="source-line-no">146</span><span id="line-146"> // still not remove, since the success reset the counter</span>
<span class="source-line-no">147</span><span id="line-147"> assertEquals(expected - 1, endpoint.getNumSinks());</span>
<span class="source-line-no">148</span><span id="line-148"> endpoint.reportBadSink(sinkPeer);</span>
<span class="source-line-no">149</span><span id="line-149"> // but we exhausted the tries</span>
<span class="source-line-no">150</span><span id="line-150"> assertEquals(expected - 2, endpoint.getNumSinks());</span>
<span class="source-line-no">151</span><span id="line-151"> }</span>
<span class="source-line-no">152</span><span id="line-152"></span>
<span class="source-line-no">153</span><span id="line-153"> @Test</span>
<span class="source-line-no">154</span><span id="line-154"> public void testReportBadSinkDownToZeroSinks() {</span>
<span class="source-line-no">155</span><span id="line-155"> List&lt;ServerName&gt; serverNames = Lists.newArrayList();</span>
<span class="source-line-no">156</span><span id="line-156"> int totalServers = 4;</span>
<span class="source-line-no">157</span><span id="line-157"> for (int i = 0; i &lt; totalServers; i++) {</span>
<span class="source-line-no">158</span><span id="line-158"> serverNames.add(mock(ServerName.class));</span>
<span class="source-line-no">159</span><span id="line-159"> }</span>
<span class="source-line-no">160</span><span id="line-160"> ((DummyHBaseReplicationEndpoint) endpoint).setRegionServers(serverNames);</span>
<span class="source-line-no">161</span><span id="line-161"> endpoint.chooseSinks();</span>
<span class="source-line-no">162</span><span id="line-162"> // Sanity check</span>
<span class="source-line-no">163</span><span id="line-163"> int expected = (int) (totalServers * HBaseReplicationEndpoint.DEFAULT_REPLICATION_SOURCE_RATIO);</span>
<span class="source-line-no">164</span><span id="line-164"> assertEquals(expected, endpoint.getNumSinks());</span>
<span class="source-line-no">165</span><span id="line-165"></span>
<span class="source-line-no">166</span><span id="line-166"> ServerName serverNameA = endpoint.getSinkServers().get(0);</span>
<span class="source-line-no">167</span><span id="line-167"> ServerName serverNameB = endpoint.getSinkServers().get(1);</span>
<span class="source-line-no">168</span><span id="line-168"></span>
<span class="source-line-no">169</span><span id="line-169"> serverNames.remove(serverNameA);</span>
<span class="source-line-no">170</span><span id="line-170"> serverNames.remove(serverNameB);</span>
<span class="source-line-no">171</span><span id="line-171"></span>
<span class="source-line-no">172</span><span id="line-172"> SinkPeer sinkPeerA = new SinkPeer(serverNameA, mock(AsyncRegionServerAdmin.class));</span>
<span class="source-line-no">173</span><span id="line-173"> SinkPeer sinkPeerB = new SinkPeer(serverNameB, mock(AsyncRegionServerAdmin.class));</span>
<span class="source-line-no">174</span><span id="line-174"></span>
<span class="source-line-no">175</span><span id="line-175"> for (int i = 0; i &lt;= HBaseReplicationEndpoint.DEFAULT_BAD_SINK_THRESHOLD; i++) {</span>
<span class="source-line-no">176</span><span id="line-176"> endpoint.reportBadSink(sinkPeerA);</span>
<span class="source-line-no">177</span><span id="line-177"> endpoint.reportBadSink(sinkPeerB);</span>
<span class="source-line-no">178</span><span id="line-178"> }</span>
<span class="source-line-no">179</span><span id="line-179"></span>
<span class="source-line-no">180</span><span id="line-180"> // We've gone down to 0 good sinks, so the replication sinks</span>
<span class="source-line-no">181</span><span id="line-181"> // should have been refreshed now, so out of 4 servers, 2 are not considered as they are</span>
<span class="source-line-no">182</span><span id="line-182"> // reported as bad.</span>
<span class="source-line-no">183</span><span id="line-183"> expected =</span>
<span class="source-line-no">184</span><span id="line-184"> (int) ((totalServers - 2) * HBaseReplicationEndpoint.DEFAULT_REPLICATION_SOURCE_RATIO);</span>
<span class="source-line-no">185</span><span id="line-185"> assertEquals(expected, endpoint.getNumSinks());</span>
<span class="source-line-no">186</span><span id="line-186"> }</span>
<span class="source-line-no">187</span><span id="line-187"></span>
<span class="source-line-no">188</span><span id="line-188"> private static class DummyHBaseReplicationEndpoint extends HBaseReplicationEndpoint {</span>
<span class="source-line-no">189</span><span id="line-189"></span>
<span class="source-line-no">190</span><span id="line-190"> List&lt;ServerName&gt; regionServers;</span>
<span class="source-line-no">191</span><span id="line-191"></span>
<span class="source-line-no">192</span><span id="line-192"> public void setRegionServers(List&lt;ServerName&gt; regionServers) {</span>
<span class="source-line-no">193</span><span id="line-193"> this.regionServers = regionServers;</span>
<span class="source-line-no">194</span><span id="line-194"> }</span>
<span class="source-line-no">195</span><span id="line-195"></span>
<span class="source-line-no">196</span><span id="line-196"> @Override</span>
<span class="source-line-no">197</span><span id="line-197"> protected Collection&lt;ServerName&gt; fetchPeerAddresses() {</span>
<span class="source-line-no">198</span><span id="line-198"> return regionServers;</span>
<span class="source-line-no">199</span><span id="line-199"> }</span>
<span class="source-line-no">200</span><span id="line-200"></span>
<span class="source-line-no">201</span><span id="line-201"> @Override</span>
<span class="source-line-no">202</span><span id="line-202"> public boolean replicate(ReplicateContext replicateContext) {</span>
<span class="source-line-no">203</span><span id="line-203"> return false;</span>
<span class="source-line-no">204</span><span id="line-204"> }</span>
<span class="source-line-no">205</span><span id="line-205"></span>
<span class="source-line-no">206</span><span id="line-206"> @Override</span>
<span class="source-line-no">207</span><span id="line-207"> public AsyncClusterConnection createConnection(URI clusterURI, Configuration conf)</span>
<span class="source-line-no">208</span><span id="line-208"> throws IOException {</span>
<span class="source-line-no">209</span><span id="line-209"> return null;</span>
<span class="source-line-no">210</span><span id="line-210"> }</span>
<span class="source-line-no">211</span><span id="line-211"> }</span>
<span class="source-line-no">212</span><span id="line-212">}</span>
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