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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.mapred;</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.junit.Assert.assertTrue;</span>
<span class="source-line-no">022</span><span id="line-22"></span>
<span class="source-line-no">023</span><span id="line-23">import java.io.File;</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.util.ArrayList;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.Iterator;</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 java.util.Set;</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.fs.FileUtil;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HBaseTestingUtil;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.Put;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.Result;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.Table;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.io.ImmutableBytesWritable;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.testclassification.LargeTests;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.testclassification.MapReduceTests;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.mapred.JobClient;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.mapred.JobConf;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.mapred.MapReduceBase;</span>
<span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.mapred.OutputCollector;</span>
<span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.mapred.Reporter;</span>
<span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.mapred.RunningJob;</span>
<span class="source-line-no">047</span><span id="line-47">import org.junit.AfterClass;</span>
<span class="source-line-no">048</span><span id="line-48">import org.junit.Assert;</span>
<span class="source-line-no">049</span><span id="line-49">import org.junit.Before;</span>
<span class="source-line-no">050</span><span id="line-50">import org.junit.BeforeClass;</span>
<span class="source-line-no">051</span><span id="line-51">import org.junit.ClassRule;</span>
<span class="source-line-no">052</span><span id="line-52">import org.junit.Test;</span>
<span class="source-line-no">053</span><span id="line-53">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">054</span><span id="line-54">import org.slf4j.Logger;</span>
<span class="source-line-no">055</span><span id="line-55">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">056</span><span id="line-56"></span>
<span class="source-line-no">057</span><span id="line-57">import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap;</span>
<span class="source-line-no">058</span><span id="line-58">import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableSet;</span>
<span class="source-line-no">059</span><span id="line-59"></span>
<span class="source-line-no">060</span><span id="line-60">@Category({ MapReduceTests.class, LargeTests.class })</span>
<span class="source-line-no">061</span><span id="line-61">public class TestTableMapReduceUtil {</span>
<span class="source-line-no">062</span><span id="line-62"></span>
<span class="source-line-no">063</span><span id="line-63"> @ClassRule</span>
<span class="source-line-no">064</span><span id="line-64"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">065</span><span id="line-65"> HBaseClassTestRule.forClass(TestTableMapReduceUtil.class);</span>
<span class="source-line-no">066</span><span id="line-66"></span>
<span class="source-line-no">067</span><span id="line-67"> private static final Logger LOG = LoggerFactory.getLogger(TestTableMapReduceUtil.class);</span>
<span class="source-line-no">068</span><span id="line-68"></span>
<span class="source-line-no">069</span><span id="line-69"> private static Table presidentsTable;</span>
<span class="source-line-no">070</span><span id="line-70"> private static final String TABLE_NAME = "People";</span>
<span class="source-line-no">071</span><span id="line-71"></span>
<span class="source-line-no">072</span><span id="line-72"> private static final byte[] COLUMN_FAMILY = Bytes.toBytes("info");</span>
<span class="source-line-no">073</span><span id="line-73"> private static final byte[] COLUMN_QUALIFIER = Bytes.toBytes("name");</span>
<span class="source-line-no">074</span><span id="line-74"></span>
<span class="source-line-no">075</span><span id="line-75"> private static ImmutableSet&lt;String&gt; presidentsRowKeys =</span>
<span class="source-line-no">076</span><span id="line-76"> ImmutableSet.of("president1", "president2", "president3");</span>
<span class="source-line-no">077</span><span id="line-77"> private static Iterator&lt;String&gt; presidentNames =</span>
<span class="source-line-no">078</span><span id="line-78"> ImmutableSet.of("John F. Kennedy", "George W. Bush", "Barack Obama").iterator();</span>
<span class="source-line-no">079</span><span id="line-79"></span>
<span class="source-line-no">080</span><span id="line-80"> private static ImmutableSet&lt;String&gt; actorsRowKeys = ImmutableSet.of("actor1", "actor2");</span>
<span class="source-line-no">081</span><span id="line-81"> private static Iterator&lt;String&gt; actorNames =</span>
<span class="source-line-no">082</span><span id="line-82"> ImmutableSet.of("Jack Nicholson", "Martin Freeman").iterator();</span>
<span class="source-line-no">083</span><span id="line-83"></span>
<span class="source-line-no">084</span><span id="line-84"> private static String PRESIDENT_PATTERN = "president";</span>
<span class="source-line-no">085</span><span id="line-85"> private static String ACTOR_PATTERN = "actor";</span>
<span class="source-line-no">086</span><span id="line-86"> private static ImmutableMap&lt;String, ImmutableSet&lt;String&gt;&gt; relation =</span>
<span class="source-line-no">087</span><span id="line-87"> ImmutableMap.of(PRESIDENT_PATTERN, presidentsRowKeys, ACTOR_PATTERN, actorsRowKeys);</span>
<span class="source-line-no">088</span><span id="line-88"></span>
<span class="source-line-no">089</span><span id="line-89"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span>
<span class="source-line-no">090</span><span id="line-90"></span>
<span class="source-line-no">091</span><span id="line-91"> @BeforeClass</span>
<span class="source-line-no">092</span><span id="line-92"> public static void beforeClass() throws Exception {</span>
<span class="source-line-no">093</span><span id="line-93"> UTIL.startMiniCluster();</span>
<span class="source-line-no">094</span><span id="line-94"> presidentsTable = createAndFillTable(TableName.valueOf(TABLE_NAME));</span>
<span class="source-line-no">095</span><span id="line-95"> }</span>
<span class="source-line-no">096</span><span id="line-96"></span>
<span class="source-line-no">097</span><span id="line-97"> @AfterClass</span>
<span class="source-line-no">098</span><span id="line-98"> public static void afterClass() throws Exception {</span>
<span class="source-line-no">099</span><span id="line-99"> UTIL.shutdownMiniCluster();</span>
<span class="source-line-no">100</span><span id="line-100"> }</span>
<span class="source-line-no">101</span><span id="line-101"></span>
<span class="source-line-no">102</span><span id="line-102"> @Before</span>
<span class="source-line-no">103</span><span id="line-103"> public void before() throws IOException {</span>
<span class="source-line-no">104</span><span id="line-104"> LOG.info("before");</span>
<span class="source-line-no">105</span><span id="line-105"> UTIL.ensureSomeRegionServersAvailable(1);</span>
<span class="source-line-no">106</span><span id="line-106"> LOG.info("before done");</span>
<span class="source-line-no">107</span><span id="line-107"> }</span>
<span class="source-line-no">108</span><span id="line-108"></span>
<span class="source-line-no">109</span><span id="line-109"> public static Table createAndFillTable(TableName tableName) throws IOException {</span>
<span class="source-line-no">110</span><span id="line-110"> Table table = UTIL.createTable(tableName, COLUMN_FAMILY);</span>
<span class="source-line-no">111</span><span id="line-111"> createPutCommand(table);</span>
<span class="source-line-no">112</span><span id="line-112"> return table;</span>
<span class="source-line-no">113</span><span id="line-113"> }</span>
<span class="source-line-no">114</span><span id="line-114"></span>
<span class="source-line-no">115</span><span id="line-115"> private static void createPutCommand(Table table) throws IOException {</span>
<span class="source-line-no">116</span><span id="line-116"> for (String president : presidentsRowKeys) {</span>
<span class="source-line-no">117</span><span id="line-117"> if (presidentNames.hasNext()) {</span>
<span class="source-line-no">118</span><span id="line-118"> Put p = new Put(Bytes.toBytes(president));</span>
<span class="source-line-no">119</span><span id="line-119"> p.addColumn(COLUMN_FAMILY, COLUMN_QUALIFIER, Bytes.toBytes(presidentNames.next()));</span>
<span class="source-line-no">120</span><span id="line-120"> table.put(p);</span>
<span class="source-line-no">121</span><span id="line-121"> }</span>
<span class="source-line-no">122</span><span id="line-122"> }</span>
<span class="source-line-no">123</span><span id="line-123"></span>
<span class="source-line-no">124</span><span id="line-124"> for (String actor : actorsRowKeys) {</span>
<span class="source-line-no">125</span><span id="line-125"> if (actorNames.hasNext()) {</span>
<span class="source-line-no">126</span><span id="line-126"> Put p = new Put(Bytes.toBytes(actor));</span>
<span class="source-line-no">127</span><span id="line-127"> p.addColumn(COLUMN_FAMILY, COLUMN_QUALIFIER, Bytes.toBytes(actorNames.next()));</span>
<span class="source-line-no">128</span><span id="line-128"> table.put(p);</span>
<span class="source-line-no">129</span><span id="line-129"> }</span>
<span class="source-line-no">130</span><span id="line-130"> }</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"> /**</span>
<span class="source-line-no">134</span><span id="line-134"> * Check what the given number of reduce tasks for the given job configuration does not exceed the</span>
<span class="source-line-no">135</span><span id="line-135"> * number of regions for the given table.</span>
<span class="source-line-no">136</span><span id="line-136"> */</span>
<span class="source-line-no">137</span><span id="line-137"> @Test</span>
<span class="source-line-no">138</span><span id="line-138"> public void shouldNumberOfReduceTaskNotExceedNumberOfRegionsForGivenTable() throws IOException {</span>
<span class="source-line-no">139</span><span id="line-139"> Assert.assertNotNull(presidentsTable);</span>
<span class="source-line-no">140</span><span id="line-140"> Configuration cfg = UTIL.getConfiguration();</span>
<span class="source-line-no">141</span><span id="line-141"> JobConf jobConf = new JobConf(cfg);</span>
<span class="source-line-no">142</span><span id="line-142"> TableMapReduceUtil.setNumReduceTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">143</span><span id="line-143"> TableMapReduceUtil.limitNumReduceTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">144</span><span id="line-144"> TableMapReduceUtil.setScannerCaching(jobConf, 100);</span>
<span class="source-line-no">145</span><span id="line-145"> assertEquals(1, jobConf.getNumReduceTasks());</span>
<span class="source-line-no">146</span><span id="line-146"> assertEquals(100, jobConf.getInt("hbase.client.scanner.caching", 0));</span>
<span class="source-line-no">147</span><span id="line-147"></span>
<span class="source-line-no">148</span><span id="line-148"> jobConf.setNumReduceTasks(10);</span>
<span class="source-line-no">149</span><span id="line-149"> TableMapReduceUtil.setNumMapTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">150</span><span id="line-150"> TableMapReduceUtil.limitNumReduceTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">151</span><span id="line-151"> assertEquals(1, jobConf.getNumReduceTasks());</span>
<span class="source-line-no">152</span><span id="line-152"> }</span>
<span class="source-line-no">153</span><span id="line-153"></span>
<span class="source-line-no">154</span><span id="line-154"> @Test</span>
<span class="source-line-no">155</span><span id="line-155"> public void shouldNumberOfMapTaskNotExceedNumberOfRegionsForGivenTable() throws IOException {</span>
<span class="source-line-no">156</span><span id="line-156"> Configuration cfg = UTIL.getConfiguration();</span>
<span class="source-line-no">157</span><span id="line-157"> JobConf jobConf = new JobConf(cfg);</span>
<span class="source-line-no">158</span><span id="line-158"> TableMapReduceUtil.setNumReduceTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">159</span><span id="line-159"> TableMapReduceUtil.limitNumMapTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">160</span><span id="line-160"> assertEquals(1, jobConf.getNumMapTasks());</span>
<span class="source-line-no">161</span><span id="line-161"></span>
<span class="source-line-no">162</span><span id="line-162"> jobConf.setNumMapTasks(10);</span>
<span class="source-line-no">163</span><span id="line-163"> TableMapReduceUtil.setNumMapTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">164</span><span id="line-164"> TableMapReduceUtil.limitNumMapTasks(TABLE_NAME, jobConf);</span>
<span class="source-line-no">165</span><span id="line-165"> assertEquals(1, jobConf.getNumMapTasks());</span>
<span class="source-line-no">166</span><span id="line-166"> }</span>
<span class="source-line-no">167</span><span id="line-167"></span>
<span class="source-line-no">168</span><span id="line-168"> @Test</span>
<span class="source-line-no">169</span><span id="line-169"> @SuppressWarnings("deprecation")</span>
<span class="source-line-no">170</span><span id="line-170"> public void shoudBeValidMapReduceEvaluation() throws Exception {</span>
<span class="source-line-no">171</span><span id="line-171"> Configuration cfg = UTIL.getConfiguration();</span>
<span class="source-line-no">172</span><span id="line-172"> JobConf jobConf = new JobConf(cfg);</span>
<span class="source-line-no">173</span><span id="line-173"> try {</span>
<span class="source-line-no">174</span><span id="line-174"> jobConf.setJobName("process row task");</span>
<span class="source-line-no">175</span><span id="line-175"> jobConf.setNumReduceTasks(1);</span>
<span class="source-line-no">176</span><span id="line-176"> TableMapReduceUtil.initTableMapJob(TABLE_NAME, new String(COLUMN_FAMILY),</span>
<span class="source-line-no">177</span><span id="line-177"> ClassificatorMapper.class, ImmutableBytesWritable.class, Put.class, jobConf);</span>
<span class="source-line-no">178</span><span id="line-178"> TableMapReduceUtil.initTableReduceJob(TABLE_NAME, ClassificatorRowReduce.class, jobConf);</span>
<span class="source-line-no">179</span><span id="line-179"> RunningJob job = JobClient.runJob(jobConf);</span>
<span class="source-line-no">180</span><span id="line-180"> assertTrue(job.isSuccessful());</span>
<span class="source-line-no">181</span><span id="line-181"> } finally {</span>
<span class="source-line-no">182</span><span id="line-182"> if (jobConf != null) FileUtil.fullyDelete(new File(jobConf.get("hadoop.tmp.dir")));</span>
<span class="source-line-no">183</span><span id="line-183"> }</span>
<span class="source-line-no">184</span><span id="line-184"> }</span>
<span class="source-line-no">185</span><span id="line-185"></span>
<span class="source-line-no">186</span><span id="line-186"> @Test</span>
<span class="source-line-no">187</span><span id="line-187"> @SuppressWarnings("deprecation")</span>
<span class="source-line-no">188</span><span id="line-188"> public void shoudBeValidMapReduceWithPartitionerEvaluation() throws IOException {</span>
<span class="source-line-no">189</span><span id="line-189"> Configuration cfg = UTIL.getConfiguration();</span>
<span class="source-line-no">190</span><span id="line-190"> JobConf jobConf = new JobConf(cfg);</span>
<span class="source-line-no">191</span><span id="line-191"> try {</span>
<span class="source-line-no">192</span><span id="line-192"> jobConf.setJobName("process row task");</span>
<span class="source-line-no">193</span><span id="line-193"> jobConf.setNumReduceTasks(2);</span>
<span class="source-line-no">194</span><span id="line-194"> TableMapReduceUtil.initTableMapJob(TABLE_NAME, new String(COLUMN_FAMILY),</span>
<span class="source-line-no">195</span><span id="line-195"> ClassificatorMapper.class, ImmutableBytesWritable.class, Put.class, jobConf);</span>
<span class="source-line-no">196</span><span id="line-196"></span>
<span class="source-line-no">197</span><span id="line-197"> TableMapReduceUtil.initTableReduceJob(TABLE_NAME, ClassificatorRowReduce.class, jobConf,</span>
<span class="source-line-no">198</span><span id="line-198"> HRegionPartitioner.class);</span>
<span class="source-line-no">199</span><span id="line-199"> RunningJob job = JobClient.runJob(jobConf);</span>
<span class="source-line-no">200</span><span id="line-200"> assertTrue(job.isSuccessful());</span>
<span class="source-line-no">201</span><span id="line-201"> } finally {</span>
<span class="source-line-no">202</span><span id="line-202"> if (jobConf != null) FileUtil.fullyDelete(new File(jobConf.get("hadoop.tmp.dir")));</span>
<span class="source-line-no">203</span><span id="line-203"> }</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"> @SuppressWarnings("deprecation")</span>
<span class="source-line-no">207</span><span id="line-207"> static class ClassificatorRowReduce extends MapReduceBase</span>
<span class="source-line-no">208</span><span id="line-208"> implements TableReduce&lt;ImmutableBytesWritable, Put&gt; {</span>
<span class="source-line-no">209</span><span id="line-209"></span>
<span class="source-line-no">210</span><span id="line-210"> @Override</span>
<span class="source-line-no">211</span><span id="line-211"> public void reduce(ImmutableBytesWritable key, Iterator&lt;Put&gt; values,</span>
<span class="source-line-no">212</span><span id="line-212"> OutputCollector&lt;ImmutableBytesWritable, Put&gt; output, Reporter reporter) throws IOException {</span>
<span class="source-line-no">213</span><span id="line-213"> String strKey = Bytes.toString(key.get());</span>
<span class="source-line-no">214</span><span id="line-214"> List&lt;Put&gt; result = new ArrayList&lt;&gt;();</span>
<span class="source-line-no">215</span><span id="line-215"> while (values.hasNext())</span>
<span class="source-line-no">216</span><span id="line-216"> result.add(values.next());</span>
<span class="source-line-no">217</span><span id="line-217"></span>
<span class="source-line-no">218</span><span id="line-218"> if (relation.keySet().contains(strKey)) {</span>
<span class="source-line-no">219</span><span id="line-219"> Set&lt;String&gt; set = relation.get(strKey);</span>
<span class="source-line-no">220</span><span id="line-220"> if (set != null) {</span>
<span class="source-line-no">221</span><span id="line-221"> assertEquals(set.size(), result.size());</span>
<span class="source-line-no">222</span><span id="line-222"> } else {</span>
<span class="source-line-no">223</span><span id="line-223"> throwAccertionError("Test infrastructure error: set is null");</span>
<span class="source-line-no">224</span><span id="line-224"> }</span>
<span class="source-line-no">225</span><span id="line-225"> } else {</span>
<span class="source-line-no">226</span><span id="line-226"> throwAccertionError("Test infrastructure error: key not found in map");</span>
<span class="source-line-no">227</span><span id="line-227"> }</span>
<span class="source-line-no">228</span><span id="line-228"> }</span>
<span class="source-line-no">229</span><span id="line-229"></span>
<span class="source-line-no">230</span><span id="line-230"> private void throwAccertionError(String errorMessage) throws AssertionError {</span>
<span class="source-line-no">231</span><span id="line-231"> throw new AssertionError(errorMessage);</span>
<span class="source-line-no">232</span><span id="line-232"> }</span>
<span class="source-line-no">233</span><span id="line-233"> }</span>
<span class="source-line-no">234</span><span id="line-234"></span>
<span class="source-line-no">235</span><span id="line-235"> @SuppressWarnings("deprecation")</span>
<span class="source-line-no">236</span><span id="line-236"> static class ClassificatorMapper extends MapReduceBase</span>
<span class="source-line-no">237</span><span id="line-237"> implements TableMap&lt;ImmutableBytesWritable, Put&gt; {</span>
<span class="source-line-no">238</span><span id="line-238"></span>
<span class="source-line-no">239</span><span id="line-239"> @Override</span>
<span class="source-line-no">240</span><span id="line-240"> public void map(ImmutableBytesWritable row, Result result,</span>
<span class="source-line-no">241</span><span id="line-241"> OutputCollector&lt;ImmutableBytesWritable, Put&gt; outCollector, Reporter reporter)</span>
<span class="source-line-no">242</span><span id="line-242"> throws IOException {</span>
<span class="source-line-no">243</span><span id="line-243"> String rowKey = Bytes.toString(result.getRow());</span>
<span class="source-line-no">244</span><span id="line-244"> final ImmutableBytesWritable pKey =</span>
<span class="source-line-no">245</span><span id="line-245"> new ImmutableBytesWritable(Bytes.toBytes(PRESIDENT_PATTERN));</span>
<span class="source-line-no">246</span><span id="line-246"> final ImmutableBytesWritable aKey = new ImmutableBytesWritable(Bytes.toBytes(ACTOR_PATTERN));</span>
<span class="source-line-no">247</span><span id="line-247"> ImmutableBytesWritable outKey = 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"> if (rowKey.startsWith(PRESIDENT_PATTERN)) {</span>
<span class="source-line-no">250</span><span id="line-250"> outKey = pKey;</span>
<span class="source-line-no">251</span><span id="line-251"> } else if (rowKey.startsWith(ACTOR_PATTERN)) {</span>
<span class="source-line-no">252</span><span id="line-252"> outKey = aKey;</span>
<span class="source-line-no">253</span><span id="line-253"> } else {</span>
<span class="source-line-no">254</span><span id="line-254"> throw new AssertionError("unexpected rowKey");</span>
<span class="source-line-no">255</span><span id="line-255"> }</span>
<span class="source-line-no">256</span><span id="line-256"></span>
<span class="source-line-no">257</span><span id="line-257"> String name = Bytes.toString(result.getValue(COLUMN_FAMILY, COLUMN_QUALIFIER));</span>
<span class="source-line-no">258</span><span id="line-258"> outCollector.collect(outKey, new Put(Bytes.toBytes("rowKey2")).addColumn(COLUMN_FAMILY,</span>
<span class="source-line-no">259</span><span id="line-259"> COLUMN_QUALIFIER, Bytes.toBytes(name)));</span>
<span class="source-line-no">260</span><span id="line-260"> }</span>
<span class="source-line-no">261</span><span id="line-261"> }</span>
<span class="source-line-no">262</span><span id="line-262">}</span>
</pre>
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