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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.mapreduce;</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.apache.hadoop.hbase.client.Scan.SCAN_ATTRIBUTES_TABLE_NAME;</span>
<span class="source-line-no">021</span><span id="line-21"></span>
<span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.ArrayList;</span>
<span class="source-line-no">024</span><span id="line-24">import java.util.List;</span>
<span class="source-line-no">025</span><span id="line-25">import java.util.Map;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.TreeMap;</span>
<span class="source-line-no">027</span><span id="line-27">import java.util.concurrent.ExecutorService;</span>
<span class="source-line-no">028</span><span id="line-28">import java.util.concurrent.atomic.AtomicInteger;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseConfiguration;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HConstants;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.HRegionLocation;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.ServerName;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.Admin;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.client.AsyncConnection;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.client.BufferedMutator;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.BufferedMutatorParams;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.client.Connection;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.client.ConnectionRegistry;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.client.ConnectionUtils;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.client.RegionInfoBuilder;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.client.RegionLocator;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.client.Result;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.client.Scan;</span>
<span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.client.Table;</span>
<span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.client.TableBuilder;</span>
<span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.io.ImmutableBytesWritable;</span>
<span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.security.User;</span>
<span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">052</span><span id="line-52">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">053</span><span id="line-53">import org.apache.hadoop.hbase.util.Pair;</span>
<span class="source-line-no">054</span><span id="line-54">import org.apache.hadoop.mapreduce.InputSplit;</span>
<span class="source-line-no">055</span><span id="line-55">import org.apache.hadoop.mapreduce.JobContext;</span>
<span class="source-line-no">056</span><span id="line-56">import org.apache.hadoop.mapreduce.RecordReader;</span>
<span class="source-line-no">057</span><span id="line-57">import org.apache.hadoop.mapreduce.TaskAttemptContext;</span>
<span class="source-line-no">058</span><span id="line-58">import org.junit.Assert;</span>
<span class="source-line-no">059</span><span id="line-59">import org.junit.ClassRule;</span>
<span class="source-line-no">060</span><span id="line-60">import org.junit.Rule;</span>
<span class="source-line-no">061</span><span id="line-61">import org.junit.Test;</span>
<span class="source-line-no">062</span><span id="line-62">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">063</span><span id="line-63">import org.junit.rules.TestName;</span>
<span class="source-line-no">064</span><span id="line-64">import org.mockito.Mockito;</span>
<span class="source-line-no">065</span><span id="line-65">import org.mockito.invocation.InvocationOnMock;</span>
<span class="source-line-no">066</span><span id="line-66">import org.mockito.stubbing.Answer;</span>
<span class="source-line-no">067</span><span id="line-67"></span>
<span class="source-line-no">068</span><span id="line-68">/**</span>
<span class="source-line-no">069</span><span id="line-69"> * Tests of MultiTableInputFormatBase.</span>
<span class="source-line-no">070</span><span id="line-70"> */</span>
<span class="source-line-no">071</span><span id="line-71">@Category({ SmallTests.class })</span>
<span class="source-line-no">072</span><span id="line-72">public class TestMultiTableInputFormatBase {</span>
<span class="source-line-no">073</span><span id="line-73"></span>
<span class="source-line-no">074</span><span id="line-74"> @ClassRule</span>
<span class="source-line-no">075</span><span id="line-75"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">076</span><span id="line-76"> HBaseClassTestRule.forClass(TestMultiTableInputFormatBase.class);</span>
<span class="source-line-no">077</span><span id="line-77"></span>
<span class="source-line-no">078</span><span id="line-78"> @Rule</span>
<span class="source-line-no">079</span><span id="line-79"> public final TestName name = new TestName();</span>
<span class="source-line-no">080</span><span id="line-80"></span>
<span class="source-line-no">081</span><span id="line-81"> /**</span>
<span class="source-line-no">082</span><span id="line-82"> * Test getSplits only puts up one Connection. In past it has put up many Connections. Each</span>
<span class="source-line-no">083</span><span id="line-83"> * Connection setup comes with a fresh new cache so we have to do fresh hit on hbase:meta. Should</span>
<span class="source-line-no">084</span><span id="line-84"> * only do one Connection when doing getSplits even if a MultiTableInputFormat.</span>
<span class="source-line-no">085</span><span id="line-85"> */</span>
<span class="source-line-no">086</span><span id="line-86"> @Test</span>
<span class="source-line-no">087</span><span id="line-87"> public void testMRSplitsConnectionCount() throws IOException {</span>
<span class="source-line-no">088</span><span id="line-88"> // Make instance of MTIFB.</span>
<span class="source-line-no">089</span><span id="line-89"> MultiTableInputFormatBase mtif = new MultiTableInputFormatBase() {</span>
<span class="source-line-no">090</span><span id="line-90"> @Override</span>
<span class="source-line-no">091</span><span id="line-91"> public RecordReader&lt;ImmutableBytesWritable, Result&gt; createRecordReader(InputSplit split,</span>
<span class="source-line-no">092</span><span id="line-92"> TaskAttemptContext context) throws IOException, InterruptedException {</span>
<span class="source-line-no">093</span><span id="line-93"> return super.createRecordReader(split, context);</span>
<span class="source-line-no">094</span><span id="line-94"> }</span>
<span class="source-line-no">095</span><span id="line-95"> };</span>
<span class="source-line-no">096</span><span id="line-96"> // Pass it a mocked JobContext. Make the JC return our Configuration.</span>
<span class="source-line-no">097</span><span id="line-97"> // Load the Configuration so it returns our special Connection so we can interpolate</span>
<span class="source-line-no">098</span><span id="line-98"> // canned responses.</span>
<span class="source-line-no">099</span><span id="line-99"> JobContext mockedJobContext = Mockito.mock(JobContext.class);</span>
<span class="source-line-no">100</span><span id="line-100"> Configuration c = HBaseConfiguration.create();</span>
<span class="source-line-no">101</span><span id="line-101"> c.set(ConnectionUtils.HBASE_CLIENT_CONNECTION_IMPL, MRSplitsConnection.class.getName());</span>
<span class="source-line-no">102</span><span id="line-102"> Mockito.when(mockedJobContext.getConfiguration()).thenReturn(c);</span>
<span class="source-line-no">103</span><span id="line-103"> // Invent a bunch of scans. Have each Scan go against a different table so a good spread.</span>
<span class="source-line-no">104</span><span id="line-104"> List&lt;Scan&gt; scans = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">105</span><span id="line-105"> for (int i = 0; i &lt; 10; i++) {</span>
<span class="source-line-no">106</span><span id="line-106"> Scan scan = new Scan();</span>
<span class="source-line-no">107</span><span id="line-107"> String tableName = this.name.getMethodName() + i;</span>
<span class="source-line-no">108</span><span id="line-108"> scan.setAttribute(SCAN_ATTRIBUTES_TABLE_NAME, Bytes.toBytes(tableName));</span>
<span class="source-line-no">109</span><span id="line-109"> scans.add(scan);</span>
<span class="source-line-no">110</span><span id="line-110"> }</span>
<span class="source-line-no">111</span><span id="line-111"> mtif.setScans(scans);</span>
<span class="source-line-no">112</span><span id="line-112"> // Get splits. Assert that that more than one.</span>
<span class="source-line-no">113</span><span id="line-113"> List&lt;InputSplit&gt; splits = mtif.getSplits(mockedJobContext);</span>
<span class="source-line-no">114</span><span id="line-114"> Assert.assertTrue(splits.size() &gt; 0);</span>
<span class="source-line-no">115</span><span id="line-115"> // Assert only one Connection was made (see the static counter we have in the mocked</span>
<span class="source-line-no">116</span><span id="line-116"> // Connection MRSplitsConnection Constructor.</span>
<span class="source-line-no">117</span><span id="line-117"> Assert.assertEquals(1, MRSplitsConnection.creations.get());</span>
<span class="source-line-no">118</span><span id="line-118"> }</span>
<span class="source-line-no">119</span><span id="line-119"></span>
<span class="source-line-no">120</span><span id="line-120"> /**</span>
<span class="source-line-no">121</span><span id="line-121"> * Connection to use above in Test.</span>
<span class="source-line-no">122</span><span id="line-122"> */</span>
<span class="source-line-no">123</span><span id="line-123"> public static class MRSplitsConnection implements Connection {</span>
<span class="source-line-no">124</span><span id="line-124"> private final Configuration configuration;</span>
<span class="source-line-no">125</span><span id="line-125"> static final AtomicInteger creations = new AtomicInteger(0);</span>
<span class="source-line-no">126</span><span id="line-126"></span>
<span class="source-line-no">127</span><span id="line-127"> MRSplitsConnection(Configuration conf, ExecutorService pool, User user,</span>
<span class="source-line-no">128</span><span id="line-128"> ConnectionRegistry registry, Map&lt;String, byte[]&gt; connectionAttributes) throws IOException {</span>
<span class="source-line-no">129</span><span id="line-129"> this.configuration = conf;</span>
<span class="source-line-no">130</span><span id="line-130"> creations.incrementAndGet();</span>
<span class="source-line-no">131</span><span id="line-131"> }</span>
<span class="source-line-no">132</span><span id="line-132"></span>
<span class="source-line-no">133</span><span id="line-133"> @Override</span>
<span class="source-line-no">134</span><span id="line-134"> public void abort(String why, Throwable e) {</span>
<span class="source-line-no">135</span><span id="line-135"></span>
<span class="source-line-no">136</span><span id="line-136"> }</span>
<span class="source-line-no">137</span><span id="line-137"></span>
<span class="source-line-no">138</span><span id="line-138"> @Override</span>
<span class="source-line-no">139</span><span id="line-139"> public boolean isAborted() {</span>
<span class="source-line-no">140</span><span id="line-140"> return false;</span>
<span class="source-line-no">141</span><span id="line-141"> }</span>
<span class="source-line-no">142</span><span id="line-142"></span>
<span class="source-line-no">143</span><span id="line-143"> @Override</span>
<span class="source-line-no">144</span><span id="line-144"> public Configuration getConfiguration() {</span>
<span class="source-line-no">145</span><span id="line-145"> return this.configuration;</span>
<span class="source-line-no">146</span><span id="line-146"> }</span>
<span class="source-line-no">147</span><span id="line-147"></span>
<span class="source-line-no">148</span><span id="line-148"> @Override</span>
<span class="source-line-no">149</span><span id="line-149"> public BufferedMutator getBufferedMutator(TableName tableName) throws IOException {</span>
<span class="source-line-no">150</span><span id="line-150"> return null;</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"> @Override</span>
<span class="source-line-no">154</span><span id="line-154"> public BufferedMutator getBufferedMutator(BufferedMutatorParams params) throws IOException {</span>
<span class="source-line-no">155</span><span id="line-155"> return null;</span>
<span class="source-line-no">156</span><span id="line-156"> }</span>
<span class="source-line-no">157</span><span id="line-157"></span>
<span class="source-line-no">158</span><span id="line-158"> @Override</span>
<span class="source-line-no">159</span><span id="line-159"> public RegionLocator getRegionLocator(final TableName tableName) throws IOException {</span>
<span class="source-line-no">160</span><span id="line-160"> // Make up array of start keys. We start off w/ empty byte array.</span>
<span class="source-line-no">161</span><span id="line-161"> final byte[][] startKeys = new byte[][] { HConstants.EMPTY_BYTE_ARRAY, Bytes.toBytes("aaaa"),</span>
<span class="source-line-no">162</span><span id="line-162"> Bytes.toBytes("bbb"), Bytes.toBytes("ccc"), Bytes.toBytes("ddd"), Bytes.toBytes("eee"),</span>
<span class="source-line-no">163</span><span id="line-163"> Bytes.toBytes("fff"), Bytes.toBytes("ggg"), Bytes.toBytes("hhh"), Bytes.toBytes("iii"),</span>
<span class="source-line-no">164</span><span id="line-164"> Bytes.toBytes("lll"), Bytes.toBytes("mmm"), Bytes.toBytes("nnn"), Bytes.toBytes("ooo"),</span>
<span class="source-line-no">165</span><span id="line-165"> Bytes.toBytes("ppp"), Bytes.toBytes("qqq"), Bytes.toBytes("rrr"), Bytes.toBytes("sss"),</span>
<span class="source-line-no">166</span><span id="line-166"> Bytes.toBytes("ttt"), Bytes.toBytes("uuu"), Bytes.toBytes("vvv"), Bytes.toBytes("zzz") };</span>
<span class="source-line-no">167</span><span id="line-167"> // Make an array of end keys. We end with the empty byte array.</span>
<span class="source-line-no">168</span><span id="line-168"> final byte[][] endKeys =</span>
<span class="source-line-no">169</span><span id="line-169"> new byte[][] { Bytes.toBytes("aaaa"), Bytes.toBytes("bbb"), Bytes.toBytes("ccc"),</span>
<span class="source-line-no">170</span><span id="line-170"> Bytes.toBytes("ddd"), Bytes.toBytes("eee"), Bytes.toBytes("fff"), Bytes.toBytes("ggg"),</span>
<span class="source-line-no">171</span><span id="line-171"> Bytes.toBytes("hhh"), Bytes.toBytes("iii"), Bytes.toBytes("lll"), Bytes.toBytes("mmm"),</span>
<span class="source-line-no">172</span><span id="line-172"> Bytes.toBytes("nnn"), Bytes.toBytes("ooo"), Bytes.toBytes("ppp"), Bytes.toBytes("qqq"),</span>
<span class="source-line-no">173</span><span id="line-173"> Bytes.toBytes("rrr"), Bytes.toBytes("sss"), Bytes.toBytes("ttt"), Bytes.toBytes("uuu"),</span>
<span class="source-line-no">174</span><span id="line-174"> Bytes.toBytes("vvv"), Bytes.toBytes("zzz"), HConstants.EMPTY_BYTE_ARRAY };</span>
<span class="source-line-no">175</span><span id="line-175"> // Now make a map of start keys to HRegionLocations. Let the server namber derive from</span>
<span class="source-line-no">176</span><span id="line-176"> // the start key.</span>
<span class="source-line-no">177</span><span id="line-177"> final Map&lt;byte[], HRegionLocation&gt; map =</span>
<span class="source-line-no">178</span><span id="line-178"> new TreeMap&lt;byte[], HRegionLocation&gt;(Bytes.BYTES_COMPARATOR);</span>
<span class="source-line-no">179</span><span id="line-179"> for (byte[] startKey : startKeys) {</span>
<span class="source-line-no">180</span><span id="line-180"> HRegionLocation hrl =</span>
<span class="source-line-no">181</span><span id="line-181"> new HRegionLocation(RegionInfoBuilder.newBuilder(tableName).setStartKey(startKey).build(),</span>
<span class="source-line-no">182</span><span id="line-182"> ServerName.valueOf(Bytes.toString(startKey), 0, 0));</span>
<span class="source-line-no">183</span><span id="line-183"> map.put(startKey, hrl);</span>
<span class="source-line-no">184</span><span id="line-184"> }</span>
<span class="source-line-no">185</span><span id="line-185"> // Get a list of the locations.</span>
<span class="source-line-no">186</span><span id="line-186"> final List&lt;HRegionLocation&gt; locations = new ArrayList&lt;HRegionLocation&gt;(map.values());</span>
<span class="source-line-no">187</span><span id="line-187"> // Now make a RegionLocator mock backed by the abpve map and list of locations.</span>
<span class="source-line-no">188</span><span id="line-188"> RegionLocator mockedRegionLocator = Mockito.mock(RegionLocator.class);</span>
<span class="source-line-no">189</span><span id="line-189"> Mockito</span>
<span class="source-line-no">190</span><span id="line-190"> .when(</span>
<span class="source-line-no">191</span><span id="line-191"> mockedRegionLocator.getRegionLocation(Mockito.any(byte[].class), Mockito.anyBoolean()))</span>
<span class="source-line-no">192</span><span id="line-192"> .thenAnswer(new Answer&lt;HRegionLocation&gt;() {</span>
<span class="source-line-no">193</span><span id="line-193"> @Override</span>
<span class="source-line-no">194</span><span id="line-194"> public HRegionLocation answer(InvocationOnMock invocationOnMock) throws Throwable {</span>
<span class="source-line-no">195</span><span id="line-195"> Object[] args = invocationOnMock.getArguments();</span>
<span class="source-line-no">196</span><span id="line-196"> byte[] key = (byte[]) args[0];</span>
<span class="source-line-no">197</span><span id="line-197"> return map.get(key);</span>
<span class="source-line-no">198</span><span id="line-198"> }</span>
<span class="source-line-no">199</span><span id="line-199"> });</span>
<span class="source-line-no">200</span><span id="line-200"> Mockito.when(mockedRegionLocator.getAllRegionLocations()).thenReturn(locations);</span>
<span class="source-line-no">201</span><span id="line-201"> Mockito.when(mockedRegionLocator.getStartEndKeys())</span>
<span class="source-line-no">202</span><span id="line-202"> .thenReturn(new Pair&lt;byte[][], byte[][]&gt;(startKeys, endKeys));</span>
<span class="source-line-no">203</span><span id="line-203"> Mockito.when(mockedRegionLocator.getName()).thenReturn(tableName);</span>
<span class="source-line-no">204</span><span id="line-204"> return mockedRegionLocator;</span>
<span class="source-line-no">205</span><span id="line-205"> }</span>
<span class="source-line-no">206</span><span id="line-206"></span>
<span class="source-line-no">207</span><span id="line-207"> @Override</span>
<span class="source-line-no">208</span><span id="line-208"> public Admin getAdmin() throws IOException {</span>
<span class="source-line-no">209</span><span id="line-209"> Admin admin = Mockito.mock(Admin.class);</span>
<span class="source-line-no">210</span><span id="line-210"> Mockito.when(admin.getConfiguration()).thenReturn(getConfiguration());</span>
<span class="source-line-no">211</span><span id="line-211"> return admin;</span>
<span class="source-line-no">212</span><span id="line-212"> }</span>
<span class="source-line-no">213</span><span id="line-213"></span>
<span class="source-line-no">214</span><span id="line-214"> @Override</span>
<span class="source-line-no">215</span><span id="line-215"> public Table getTable(TableName tableName) throws IOException {</span>
<span class="source-line-no">216</span><span id="line-216"> Table table = Mockito.mock(Table.class);</span>
<span class="source-line-no">217</span><span id="line-217"> Mockito.when(table.getName()).thenReturn(tableName);</span>
<span class="source-line-no">218</span><span id="line-218"> return table;</span>
<span class="source-line-no">219</span><span id="line-219"> }</span>
<span class="source-line-no">220</span><span id="line-220"></span>
<span class="source-line-no">221</span><span id="line-221"> @Override</span>
<span class="source-line-no">222</span><span id="line-222"> public void close() throws IOException {</span>
<span class="source-line-no">223</span><span id="line-223"></span>
<span class="source-line-no">224</span><span id="line-224"> }</span>
<span class="source-line-no">225</span><span id="line-225"></span>
<span class="source-line-no">226</span><span id="line-226"> @Override</span>
<span class="source-line-no">227</span><span id="line-227"> public boolean isClosed() {</span>
<span class="source-line-no">228</span><span id="line-228"> return false;</span>
<span class="source-line-no">229</span><span id="line-229"> }</span>
<span class="source-line-no">230</span><span id="line-230"></span>
<span class="source-line-no">231</span><span id="line-231"> @Override</span>
<span class="source-line-no">232</span><span id="line-232"> public TableBuilder getTableBuilder(TableName tableName, ExecutorService pool) {</span>
<span class="source-line-no">233</span><span id="line-233"> return Mockito.mock(TableBuilder.class);</span>
<span class="source-line-no">234</span><span id="line-234"> }</span>
<span class="source-line-no">235</span><span id="line-235"></span>
<span class="source-line-no">236</span><span id="line-236"> @Override</span>
<span class="source-line-no">237</span><span id="line-237"> public void clearRegionLocationCache() {</span>
<span class="source-line-no">238</span><span id="line-238"> }</span>
<span class="source-line-no">239</span><span id="line-239"></span>
<span class="source-line-no">240</span><span id="line-240"> @Override</span>
<span class="source-line-no">241</span><span id="line-241"> public AsyncConnection toAsyncConnection() {</span>
<span class="source-line-no">242</span><span id="line-242"> return null;</span>
<span class="source-line-no">243</span><span id="line-243"> }</span>
<span class="source-line-no">244</span><span id="line-244"></span>
<span class="source-line-no">245</span><span id="line-245"> @Override</span>
<span class="source-line-no">246</span><span id="line-246"> public String getClusterId() {</span>
<span class="source-line-no">247</span><span id="line-247"> return null;</span>
<span class="source-line-no">248</span><span id="line-248"> }</span>
<span class="source-line-no">249</span><span id="line-249"></span>
<span class="source-line-no">250</span><span id="line-250"> }</span>
<span class="source-line-no">251</span><span id="line-251">}</span>
</pre>
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