Initialization for record writing.

[Jane Chen]

Hi,

Looking at 0.21's API,

In org.apache.hadoop.mapreduce.RecordReader, there is an initialize() method 
that I can use for one time work;

In org.apache.hadoop.mapreduce.RecordWriter, there is no initialize().

Why is that?  Where am I supposed to do the one time initialization?  In the 
constructor?  Why the asymmetry?

Thanks,
Jane