Ke, Check out the MultipleOutputs class. I think that's what you need. The Javadoc has an example as well.
Justin On Wed, Oct 12, 2011 at 3:00 PM, Ke Zhai <[email protected]> wrote: > Hi, all, > > I am trying to write an application which needs the mapper to split its > output to file and reducer. > For example, if a mapper produces two key-value pairs (a, 1) and (b, 2), how > can I write record (a, 1) directly to a file on HDFS, while still pass record > (b, 2) to a reducer? > > Best, > Ke
