Only blocker is accumulator can be only "added" to from slaves & only read on the master. If that constraint fit you well you can fire away.
Mayur Rustagi Ph: +1 (760) 203 3257 http://www.sigmoidanalytics.com @mayur_rustagi <https://twitter.com/mayur_rustagi> On Fri, Aug 1, 2014 at 7:38 AM, Julien Naour <julna...@gmail.com> wrote: > Hi, > > My question is simple: could it be some performance issue using > Accumulable/Accumulator instead of method like map() reduce()... ? > > My use case : implementation of a clustering algorithm like k-means. > At the begining I used two steps, one to asign data to cluster and another > to calculate new centroids. > After some research I use now an accumulable with an Array to calculate > new centroid during the assigment of data. It's easier to unterstand and > for the moment it gives better performance. > It's probably because I used 2 steps before and now only one thanks to > accumulable. > > So any indications against it ? > > Cheers, > > Julien > >
