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POhadoop key returns multiple values
 

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    <p>This is my first time programming in Hadoop and I'm basing my assignment off of WordCount v1.0 on the hadoop tutorial website.</p> <p>Assignment: You have two files. File0 contains every word in the dictionary. File1 contains one random word. For example: 'beautiful'.</p> <p>And when I run the program it should return every word in File0 that is the same size as the word in File1</p> <p>*beautiful will return every 9 letter word in the dictionary</p> <p>For example: beautiful - AARDVARKS AASVOGELS ABAMPERES....ZYMOGRAMS ZYMURGIES</p> <p>So my question is how should I go about this? The hadoop wordcount v1.0 returns the key and a single value. ---- e.g. (beautiful 4)</p> <p>Do I need to change the value from an int to a string or maybe some sort of an array that contains every word of the same size as the key?</p> <p>*basically I need to change the format from</p> <p>(beautiful 4)</p> <p>to</p> <p>(beautiful: AARDVARKS AASVOGELS ABAMPERES...ZYMOGENES ZYMOGRAMS ZYMURGIES)</p> <p>Here is the code (from their website):</p> <pre><code>package org.myorg; import java.io.IOException; import java.util.*; import org.apache.hadoop.fs.Path; import org.apache.hadoop.conf.*; import org.apache.hadoop.io.*; import org.apache.hadoop.mapred.*; import org.apache.hadoop.util.*; public class WordCount { public static class Map extends MapReduceBase implements Mapper&lt;LongWritable, Text, Text, IntWritable&gt; { private final static IntWritable one = new IntWritable(1); private Text word = new Text(); public void map(LongWritable key, Text value, OutputCollector&lt;Text, IntWritable&gt; output, Reporter reporter) throws IOException { String line = value.toString(); StringTokenizer tokenizer = new StringTokenizer(line); while (tokenizer.hasMoreTokens()) { word.set(tokenizer.nextToken()); output.collect(word, one); } } } public static class Reduce extends MapReduceBase implements Reducer&lt;Text, IntWritable, Text, IntWritable&gt; { public void reduce(Text key, Iterator&lt;IntWritable&gt; values, OutputCollector&lt;Text, IntWritable&gt; output, Reporter reporter) throws IOException { int sum = 0; while (values.hasNext()) { sum += values.next().get(); } output.collect(key, new IntWritable(sum)); } } public static void main(String[] args) throws Exception { JobConf conf = new JobConf(WordCount.class); conf.setJobName("wordcount"); conf.setOutputKeyClass(Text.class); conf.setOutputValueClass(IntWritable.class); conf.setMapperClass(Map.class); conf.setCombinerClass(Reduce.class); conf.setReducerClass(Reduce.class); conf.setInputFormat(TextInputFormat.class); conf.setOutputFormat(TextOutputFormat.class); FileInputFormat.setInputPaths(conf, new Path(args[0])); FileOutputFormat.setOutputPath(conf, new Path(args[1])); JobClient.runJob(conf); } } </code></pre> <p>Do I need to change the map, reduce, or both?? And how??</p> <p>can someone please help! thanks so much</p>
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