On Fri, Dec 4, 2009 at 12:32 PM, Raymond Jennings III <[email protected] > wrote:
> Does the combiner run once per data node or one per map task? (That it can > run multiple times on the same data node after each map task.) Thanks. > The combiner can run 0, 1, or many times on each data value. It can run in both the map task and reduce task. -- Owen
