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@@ -1,69 +0,0 @@
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-package org.apache.hadoop.mapreduce.example;
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-
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-import java.io.IOException;
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-import java.util.StringTokenizer;
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-
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-import org.apache.hadoop.conf.Configuration;
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-import org.apache.hadoop.fs.Path;
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-import org.apache.hadoop.io.IntWritable;
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-import org.apache.hadoop.io.Text;
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-import org.apache.hadoop.mapreduce.Job;
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-import org.apache.hadoop.mapreduce.Mapper;
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-import org.apache.hadoop.mapreduce.Reducer;
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-import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
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-import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
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-import org.apache.hadoop.util.GenericOptionsParser;
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-
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-public class WordCount {
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-
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- public static class TokenizerMapper
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- extends Mapper<Object, Text, Text, IntWritable>{
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-
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- private final static IntWritable one = new IntWritable(1);
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- private Text word = new Text();
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-
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- public void map(Object key, Text value, Context context
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- ) throws IOException, InterruptedException {
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- StringTokenizer itr = new StringTokenizer(value.toString());
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- while (itr.hasMoreTokens()) {
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- word.set(itr.nextToken());
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- context.collect(word, one);
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- }
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- }
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- }
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-
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- public static class IntSumReducer
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- extends Reducer<Text,IntWritable,Text,IntWritable> {
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- private IntWritable result = new IntWritable();
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-
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- public void reduce(Text key, Iterable<IntWritable> values,
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- Context context
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- ) throws IOException, InterruptedException {
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- int sum = 0;
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- for (IntWritable val : values) {
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- sum += val.get();
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- }
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- result.set(sum);
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- context.collect(key, result);
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- }
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- }
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-
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- public static void main(String[] args) throws Exception {
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- Configuration conf = new Configuration();
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- GenericOptionsParser parser = new GenericOptionsParser(conf, args);
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- String[] otherArgs = parser.getRemainingArgs();
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- if (otherArgs.length != 2) {
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- System.err.println("Usage: wordcount <in> <out>");
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- System.exit(2);
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- }
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- Job job = new Job(conf, "word count");
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- job.setMapperClass(TokenizerMapper.class);
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- job.setCombinerClass(IntSumReducer.class);
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- job.setReducerClass(IntSumReducer.class);
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- job.setOutputKeyClass(Text.class);
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- job.setOutputValueClass(IntWritable.class);
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- FileInputFormat.addInputPath(conf, new Path(otherArgs[0]));
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- FileOutputFormat.setOutputPath(conf, new Path(otherArgs[1]));
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- System.exit(job.waitForCompletion() ? 0 : 1);
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- }
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-}
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