It is a function of the "number of spills" on map side and I believe the default is 3. So for every 3 times data is spilled the combiner is run. This number is configurable.
Sent from my iPhone On Mar 14, 2012, at 3:26 PM, Gayatri Rao <[email protected]> wrote: > Hi all, > > I have a quick query on using a combiner in a MR job. Is it true the > framework decides whether or not the combiner gets called? > Can any one please give more information on how t his is done. > > Thanks, > Gayatri
