Coverting Text file to Binary Sequence File

1.In the Main Class

job.setOutputKeyClass(BytesWritable.class);

job.setOutputValueClass(BytesWritable.class);

job.setInputFormatClass(TextInputFormat.class);

job.setOutputFormatClass(SequenceFileAsBinaryOutputFormat.class);

job.setNumReduceTasks(0); //don't use reduce class

2.In the Map class

public class Map extends

Mapper< LongWritable, Text, BytesWritable, BytesWritable>

{

private BytesWritable one = new BytesWritable("1".getBytes());

private BytesWritable val = new BytesWritable();

public void map(LongWritable key, Text value, Context context)

throws IOException, InterruptedException

{

String s = value.toString();

val.set(s.getBytes(),0,s.length());

context.write(one,val);

}

}