Thanks. 2009/2/23 james warren <[email protected]>
> Hi Nick - > While your reducers may be running concurrently with your mappers, they > will > not begin the "sort" and "reduce" steps until all map tasks have completed. > Once they actually begin the reduce stage, they will have received all > values for a given key. > > cheers, > -jw > > On Mon, Feb 23, 2009 at 1:00 AM, Nick Cen <[email protected]> wrote: > > > Hi all, > > > > If i have a bunch of value that have the same key, and i have more then > one > > reducer running, which guarantee both mapper and reducer are running > > concurently. Will all these value be send to the reducer at the same > time? > > Thx > > > > -- > > http://daily.appspot.com/food/ > > > -- http://daily.appspot.com/food/
