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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.client;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.client.RegionReplicaTestHelper.testLocator;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.client.trace.hamcrest.SpanDataMatchers.hasEnded;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.client.trace.hamcrest.SpanDataMatchers.hasKind;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.client.trace.hamcrest.SpanDataMatchers.hasName;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.client.trace.hamcrest.SpanDataMatchers.hasParentSpanId;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import static org.hamcrest.MatcherAssert.assertThat;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import static org.hamcrest.Matchers.allOf;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import static org.hamcrest.Matchers.endsWith;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import static org.hamcrest.Matchers.hasItem;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>import io.opentelemetry.api.trace.SpanKind;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import io.opentelemetry.sdk.trace.data.SpanData;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.List;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.concurrent.TimeUnit;<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.hbase.ConnectionRule;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<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.HBaseTestingUtil;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HConstants;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.MatcherPredicate;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.MiniClusterRule;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.StartTestingClusterOption;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.TableName;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.Waiter;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.RegionReplicaTestHelper.Locator;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.trace.StringTraceRenderer;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.security.User;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.testclassification.ClientTests;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.trace.OpenTelemetryClassRule;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.trace.OpenTelemetryTestRule;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.hamcrest.Matcher;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.junit.ClassRule;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.junit.Rule;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.junit.Test;<a name="line.58"></a>
<span class="sourceLineNo">059</span>import org.junit.experimental.categories.Category;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.junit.experimental.runners.Enclosed;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.junit.rules.ExternalResource;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import org.junit.rules.RuleChain;<a name="line.62"></a>
<span class="sourceLineNo">063</span>import org.junit.rules.TestName;<a name="line.63"></a>
<span class="sourceLineNo">064</span>import org.junit.rules.TestRule;<a name="line.64"></a>
<span class="sourceLineNo">065</span>import org.junit.runner.RunWith;<a name="line.65"></a>
<span class="sourceLineNo">066</span>import org.slf4j.Logger;<a name="line.66"></a>
<span class="sourceLineNo">067</span>import org.slf4j.LoggerFactory;<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>@RunWith(Enclosed.class)<a name="line.69"></a>
<span class="sourceLineNo">070</span>public class TestAsyncMetaRegionLocator {<a name="line.70"></a>
<span class="sourceLineNo">071</span> private static final Logger logger = LoggerFactory.getLogger(TestAsyncMetaRegionLocator.class);<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span> private static final class Setup extends ExternalResource {<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span> private final MiniClusterRule miniClusterRule;<a name="line.75"></a>
<span class="sourceLineNo">076</span> private final ConnectionRule connectionRule;<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> private boolean initialized = false;<a name="line.78"></a>
<span class="sourceLineNo">079</span> private HBaseTestingUtil testUtil;<a name="line.79"></a>
<span class="sourceLineNo">080</span> private AsyncMetaRegionLocator locator;<a name="line.80"></a>
<span class="sourceLineNo">081</span> private ConnectionRegistry registry;<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> public Setup(final ConnectionRule connectionRule, final MiniClusterRule miniClusterRule) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> this.connectionRule = connectionRule;<a name="line.84"></a>
<span class="sourceLineNo">085</span> this.miniClusterRule = miniClusterRule;<a name="line.85"></a>
<span class="sourceLineNo">086</span> }<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span> public HBaseTestingUtil getTestingUtility() {<a name="line.88"></a>
<span class="sourceLineNo">089</span> assertInitialized();<a name="line.89"></a>
<span class="sourceLineNo">090</span> return testUtil;<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> public AsyncMetaRegionLocator getLocator() {<a name="line.93"></a>
<span class="sourceLineNo">094</span> assertInitialized();<a name="line.94"></a>
<span class="sourceLineNo">095</span> return locator;<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span> private void assertInitialized() {<a name="line.98"></a>
<span class="sourceLineNo">099</span> if (!initialized) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> throw new IllegalStateException("before method has not been called.");<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span> protected void before() throws Throwable {<a name="line.105"></a>
<span class="sourceLineNo">106</span> final AsyncAdmin admin = connectionRule.getAsyncConnection().getAdmin();<a name="line.106"></a>
<span class="sourceLineNo">107</span> testUtil = miniClusterRule.getTestingUtility();<a name="line.107"></a>
<span class="sourceLineNo">108</span> HBaseTestingUtil.setReplicas(admin, TableName.META_TABLE_NAME, 3);<a name="line.108"></a>
<span class="sourceLineNo">109</span> testUtil.waitUntilNoRegionsInTransition();<a name="line.109"></a>
<span class="sourceLineNo">110</span> registry = ConnectionRegistryFactory.create(testUtil.getConfiguration(), User.getCurrent());<a name="line.110"></a>
<span class="sourceLineNo">111</span> RegionReplicaTestHelper.waitUntilAllMetaReplicasAreReady(testUtil, registry);<a name="line.111"></a>
<span class="sourceLineNo">112</span> admin.balancerSwitch(false).get();<a name="line.112"></a>
<span class="sourceLineNo">113</span> locator = new AsyncMetaRegionLocator(registry);<a name="line.113"></a>
<span class="sourceLineNo">114</span> initialized = true;<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> @Override<a name="line.117"></a>
<span class="sourceLineNo">118</span> protected void after() {<a name="line.118"></a>
<span class="sourceLineNo">119</span> registry.close();<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span> }<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span> public static abstract class AbstractBase {<a name="line.123"></a>
<span class="sourceLineNo">124</span> private final OpenTelemetryClassRule otelClassRule = OpenTelemetryClassRule.create();<a name="line.124"></a>
<span class="sourceLineNo">125</span> private final MiniClusterRule miniClusterRule;<a name="line.125"></a>
<span class="sourceLineNo">126</span> private final Setup setup;<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span> protected Matcher&lt;SpanData&gt; parentSpanMatcher;<a name="line.128"></a>
<span class="sourceLineNo">129</span> protected List&lt;SpanData&gt; spans;<a name="line.129"></a>
<span class="sourceLineNo">130</span> protected Matcher&lt;SpanData&gt; registryGetMetaRegionLocationsMatcher;<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> @Rule<a name="line.132"></a>
<span class="sourceLineNo">133</span> public final TestRule classRule;<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span> @Rule<a name="line.135"></a>
<span class="sourceLineNo">136</span> public final OpenTelemetryTestRule otelTestRule = new OpenTelemetryTestRule(otelClassRule);<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span> @Rule<a name="line.138"></a>
<span class="sourceLineNo">139</span> public TestName testName = new TestName();<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span> public AbstractBase() {<a name="line.141"></a>
<span class="sourceLineNo">142</span> miniClusterRule = MiniClusterRule.newBuilder()<a name="line.142"></a>
<span class="sourceLineNo">143</span> .setMiniClusterOption(StartTestingClusterOption.builder().numWorkers(3).build())<a name="line.143"></a>
<span class="sourceLineNo">144</span> .setConfiguration(() -&gt; {<a name="line.144"></a>
<span class="sourceLineNo">145</span> final Configuration conf = HBaseConfiguration.create();<a name="line.145"></a>
<span class="sourceLineNo">146</span> conf.setClass(HConstants.CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY,<a name="line.146"></a>
<span class="sourceLineNo">147</span> getConnectionRegistryClass(), ConnectionRegistry.class);<a name="line.147"></a>
<span class="sourceLineNo">148</span> return conf;<a name="line.148"></a>
<span class="sourceLineNo">149</span> }).build();<a name="line.149"></a>
<span class="sourceLineNo">150</span> final ConnectionRule connectionRule =<a name="line.150"></a>
<span class="sourceLineNo">151</span> ConnectionRule.createAsyncConnectionRule(miniClusterRule::createAsyncConnection);<a name="line.151"></a>
<span class="sourceLineNo">152</span> setup = new Setup(connectionRule, miniClusterRule);<a name="line.152"></a>
<span class="sourceLineNo">153</span> classRule = RuleChain.outerRule(otelClassRule).around(miniClusterRule).around(connectionRule)<a name="line.153"></a>
<span class="sourceLineNo">154</span> .around(setup);<a name="line.154"></a>
<span class="sourceLineNo">155</span> }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span> protected abstract Class&lt;? extends ConnectionRegistry&gt; getConnectionRegistryClass();<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span> @Test<a name="line.159"></a>
<span class="sourceLineNo">160</span> public void test() throws Exception {<a name="line.160"></a>
<span class="sourceLineNo">161</span> final AsyncMetaRegionLocator locator = setup.getLocator();<a name="line.161"></a>
<span class="sourceLineNo">162</span> final HBaseTestingUtil testUtil = setup.getTestingUtility();<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span> TraceUtil.trace(() -&gt; {<a name="line.164"></a>
<span class="sourceLineNo">165</span> try {<a name="line.165"></a>
<span class="sourceLineNo">166</span> testLocator(miniClusterRule.getTestingUtility(), TableName.META_TABLE_NAME,<a name="line.166"></a>
<span class="sourceLineNo">167</span> new Locator() {<a name="line.167"></a>
<span class="sourceLineNo">168</span> @Override<a name="line.168"></a>
<span class="sourceLineNo">169</span> public void updateCachedLocationOnError(HRegionLocation loc, Throwable error) {<a name="line.169"></a>
<span class="sourceLineNo">170</span> locator.updateCachedLocationOnError(loc, error);<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> @Override<a name="line.173"></a>
<span class="sourceLineNo">174</span> public RegionLocations getRegionLocations(TableName tableName, int replicaId,<a name="line.174"></a>
<span class="sourceLineNo">175</span> boolean reload) throws Exception {<a name="line.175"></a>
<span class="sourceLineNo">176</span> return locator.getRegionLocations(replicaId, reload).get();<a name="line.176"></a>
<span class="sourceLineNo">177</span> }<a name="line.177"></a>
<span class="sourceLineNo">178</span> });<a name="line.178"></a>
<span class="sourceLineNo">179</span> } catch (Exception e) {<a name="line.179"></a>
<span class="sourceLineNo">180</span> throw new RuntimeException(e);<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span> }, testName.getMethodName());<a name="line.182"></a>
<span class="sourceLineNo">183</span><a name="line.183"></a>
<span class="sourceLineNo">184</span> final Configuration conf = testUtil.getConfiguration();<a name="line.184"></a>
<span class="sourceLineNo">185</span> parentSpanMatcher = allOf(hasName(testName.getMethodName()), hasEnded());<a name="line.185"></a>
<span class="sourceLineNo">186</span> Waiter.waitFor(conf, TimeUnit.SECONDS.toMillis(5),<a name="line.186"></a>
<span class="sourceLineNo">187</span> new MatcherPredicate&lt;&gt;(otelClassRule::getSpans, hasItem(parentSpanMatcher)));<a name="line.187"></a>
<span class="sourceLineNo">188</span> spans = otelClassRule.getSpans();<a name="line.188"></a>
<span class="sourceLineNo">189</span> if (logger.isDebugEnabled()) {<a name="line.189"></a>
<span class="sourceLineNo">190</span> StringTraceRenderer renderer = new StringTraceRenderer(spans);<a name="line.190"></a>
<span class="sourceLineNo">191</span> renderer.render(logger::debug);<a name="line.191"></a>
<span class="sourceLineNo">192</span> }<a name="line.192"></a>
<span class="sourceLineNo">193</span> assertThat(spans, hasItem(parentSpanMatcher));<a name="line.193"></a>
<span class="sourceLineNo">194</span> final SpanData parentSpan = spans.stream().filter(parentSpanMatcher::matches).findAny()<a name="line.194"></a>
<span class="sourceLineNo">195</span> .orElseThrow(AssertionError::new);<a name="line.195"></a>
<span class="sourceLineNo">196</span><a name="line.196"></a>
<span class="sourceLineNo">197</span> registryGetMetaRegionLocationsMatcher =<a name="line.197"></a>
<span class="sourceLineNo">198</span> allOf(hasName(endsWith("ConnectionRegistry.getMetaRegionLocations")),<a name="line.198"></a>
<span class="sourceLineNo">199</span> hasParentSpanId(parentSpan), hasKind(SpanKind.INTERNAL), hasEnded());<a name="line.199"></a>
<span class="sourceLineNo">200</span> assertThat(spans, hasItem(registryGetMetaRegionLocationsMatcher));<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><a name="line.203"></a>
<span class="sourceLineNo">204</span> /**<a name="line.204"></a>
<span class="sourceLineNo">205</span> * Test covers when client is configured with {@link ZKConnectionRegistry}.<a name="line.205"></a>
<span class="sourceLineNo">206</span> */<a name="line.206"></a>
<span class="sourceLineNo">207</span> @Category({ MediumTests.class, ClientTests.class })<a name="line.207"></a>
<span class="sourceLineNo">208</span> public static class TestZKConnectionRegistry extends AbstractBase {<a name="line.208"></a>
<span class="sourceLineNo">209</span> @ClassRule<a name="line.209"></a>
<span class="sourceLineNo">210</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.210"></a>
<span class="sourceLineNo">211</span> HBaseClassTestRule.forClass(TestZKConnectionRegistry.class);<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span> @Override<a name="line.213"></a>
<span class="sourceLineNo">214</span> protected Class&lt;? extends ConnectionRegistry&gt; getConnectionRegistryClass() {<a name="line.214"></a>
<span class="sourceLineNo">215</span> return ZKConnectionRegistry.class;<a name="line.215"></a>
<span class="sourceLineNo">216</span> }<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> * Test covers when client is configured with {@link RpcConnectionRegistry}.<a name="line.220"></a>
<span class="sourceLineNo">221</span> */<a name="line.221"></a>
<span class="sourceLineNo">222</span> @Category({ MediumTests.class, ClientTests.class })<a name="line.222"></a>
<span class="sourceLineNo">223</span> public static class TestRpcConnectionRegistry extends AbstractBase {<a name="line.223"></a>
<span class="sourceLineNo">224</span> @ClassRule<a name="line.224"></a>
<span class="sourceLineNo">225</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.225"></a>
<span class="sourceLineNo">226</span> HBaseClassTestRule.forClass(TestRpcConnectionRegistry.class);<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
<span class="sourceLineNo">228</span> @Override<a name="line.228"></a>
<span class="sourceLineNo">229</span> protected Class&lt;? extends ConnectionRegistry&gt; getConnectionRegistryClass() {<a name="line.229"></a>
<span class="sourceLineNo">230</span> return RpcConnectionRegistry.class;<a name="line.230"></a>
<span class="sourceLineNo">231</span> }<a name="line.231"></a>
<span class="sourceLineNo">232</span><a name="line.232"></a>
<span class="sourceLineNo">233</span> @Test<a name="line.233"></a>
<span class="sourceLineNo">234</span> @Override<a name="line.234"></a>
<span class="sourceLineNo">235</span> public void test() throws Exception {<a name="line.235"></a>
<span class="sourceLineNo">236</span> super.test();<a name="line.236"></a>
<span class="sourceLineNo">237</span> final SpanData registry_getMetaRegionLocationsSpan =<a name="line.237"></a>
<span class="sourceLineNo">238</span> spans.stream().filter(registryGetMetaRegionLocationsMatcher::matches).findAny()<a name="line.238"></a>
<span class="sourceLineNo">239</span> .orElseThrow(AssertionError::new);<a name="line.239"></a>
<span class="sourceLineNo">240</span> final Matcher&lt;SpanData&gt; clientGetMetaRegionLocationsMatcher = allOf(<a name="line.240"></a>
<span class="sourceLineNo">241</span> hasName(endsWith("ClientMetaService/GetMetaRegionLocations")),<a name="line.241"></a>
<span class="sourceLineNo">242</span> hasParentSpanId(registry_getMetaRegionLocationsSpan), hasKind(SpanKind.CLIENT), hasEnded());<a name="line.242"></a>
<span class="sourceLineNo">243</span> assertThat(spans, hasItem(clientGetMetaRegionLocationsMatcher));<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span> }<a name="line.245"></a>
<span class="sourceLineNo">246</span>}<a name="line.246"></a>
</pre>
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