Dear Jerry, If you do not enable checkpointing you get the at most once processing guarantee (some might call that no guarantee at all). When you enable checkpointing you can choose between exactly and at least once semantics. The latter provides better latency.
Best, Marton On Tue, Dec 1, 2015 at 11:04 PM, Jerry Peng <jerry.boyang.p...@gmail.com> wrote: > Hello, > > I have a question regarding link streaming. I now if you enable > checkpointing you can have exactly once processing guarantee. If I do > not enable checkpointing what are the semantics of the processing? At > least once? > > Best, > > Jerry >
