bigdata/wordcount.java at main · Prakhar-creator/bigdata · GitHub

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import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

public class wordcount extends Configured implements Tool {

	@Override
	public int run(String[] args) throws Exception {

	if(args.length<2)
	{
		System.out.println("Plz Give Input Output Directory Correctly");
		return -1;
	}

	JobConf conf = new JobConf(wordcount.class);

	FileInputFormat.setInputPaths(conf,new Path(args[0]));
	FileOutputFormat.setOutputPath(conf, new Path(args[1]));

	conf.setMapperClass(wordmapper.class);
	conf.setReducerClass(wordreducer.class);

	conf.setMapOutputKeyClass(Text.class);
	conf.setMapOutputValueClass(IntWritable.class);
	conf.setOutputKeyClass(Text.class);
	conf.setOutputValueClass(IntWritable.class);


	JobClient.runJob(conf);
	return 0;
	}

	public static void main(String args[]) throws Exception
	{
		int exitcode = ToolRunner.run(new wordcount(), args);
		System.exit(exitcode);
	}

}