How to emit in the close method of Reducer

Question

The close method inherited from MapReduceBase has no argument:

public void close()

So I don\'t have OutputC

Answer 1

It is unfortunate you are using the old API. The new API has a cleanup method (complements setup).

I wonder if Hadoop will let you cheat and store the OutputCollector in a private data member in your Reducer class, then refer to that in the close method. I'm guessing you can't, but it might be worth a try.