public void addNamedTupleOutput(String namedOutput, Schema outputSchema)
throws TupleMRException {
validateNamedOutput(namedOutput);
Output output = new Output(namedOutput,
new TupleOutputFormat(outputSchema.toString()), ITuple.class, NullWritable.class,
null);
AvroUtils.addAvroSerialization(conf);
namedOutputs.add(output);
}