On Wed, Aug 12, 2009 at 8:51 AM, Fernando Padilla <f...@alum.mit.edu> wrote:
> Is there an easy way to give a key range to the MR job, so that it doesn't > have to walk through keys I know I don't want? Yes. You'd specify start and end rows on a Scan. How you get the start and end row into your map context has a number of solutions the most basic of which would be prewriting a file that had in it start/end rows. You'd then use a fileinputformat that did line splitting to feed your map task. In the map task, parse the passed line. Etc. St.Ack
