My guess is that a single reducer is simpler and will be good enough. On Mon, Dec 5, 2011 at 1:02 PM, Raphael Cendrillon <[email protected] > wrote:
> By the way, currently I have the rows being added at the combiner, and > then the results of the combiners added in a single reducer. Do you think > this is sufficient, or should multiple reducers be used (per column) to > further spread the load?
