Yes, acking a tuple confirms to Storm that a tuple was processed within a Spout or Bolt, and is used to guarantee at least once processing for all tuples processed by your topology.
--John On Tue, Jan 19, 2016 at 9:49 AM, Noppanit Charassinvichai < [email protected]> wrote: > I'm new to Storm. And I've seen some of the examples that do not call > `ack()` in Bolt. From the documentation and my understanding, is calling > ack() is just for guaranteeing that the msg will be processed at least once? > > Thanks, > >
