package ch.fhnw.ddm.myMiniMapRed;

//== MinimalMapReduce: The simplest possible MapReduce driver, which uses the defaults

import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

public class MinimalMapReduce extends Configured implements Tool {

	@Override
	public int run(String[] args) throws Exception {
		if (args.length != 2) {
			System.err.printf("Usage: %s [generic options] <in> <out>\n", getClass().getSimpleName());
			ToolRunner.printGenericCommandUsage(System.err);
			return -1;

		}
		Job job = Job.getInstance(getConf(), "minimapred");
		job.setJarByClass(this.getClass());

		FileInputFormat.addInputPath(job, new Path(args[0]));
		FileOutputFormat.setOutputPath(job, new Path(args[1]));
		return job.waitForCompletion(true) ? 0 : 1;
	}

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