I think "sink" it the correct term here. It means that we write to a topic.
Processors, that don't have downstream nodes are called "terminal operation" (at least in the DSL). Thus, a sink is also a "terminal operation" but not the other way round. So the docs are not optimal, as they put the "terminal" part into the focus while the "writing to a topic" part is the main thing here. -Matthias On 6/3/17 1:52 AM, Michal Borowiecki wrote: > Yes, I think the key distinction, from the point of view of that > documentation section, is that it doesn't have downstream processors. > > > On 03/06/17 09:48, Damian Guy wrote: >> Hi Michal, >> >> In this case Sink Processor is really referring to a SinkNode that can >> only produce to a kafka topic. Maybe the terminology is incorrect as >> strictly speaking a processor that writes data to anything could be >> considered a Sink Processor. >> >> On Sat, 3 Jun 2017 at 09:23 Michal Borowiecki >> <michal.borowie...@openbet.com <mailto:michal.borowie...@openbet.com>> >> wrote: >> >> Hi all, >> >> Streams docs say: >> >>> * *Sink Processor*: A sink processor is a special type of >>> stream processor that does not have down-stream processors. >>> It sends any received records from its up-stream processors >>> to a specified Kafka topic. >>> >> Would a processor that doesn't produce to a kafka topic (directly) >> but only updates a state store also be considered a sink >> processor? I think yes. >> >> I'll submit a PR to that effect unless I hear otherwise. >> >> Cheers, >> >> Michał >> >> -- >> <http://www.openbet.com/> Michal Borowiecki >> Senior Software Engineer L4 >> T: +44 208 742 1600 <tel:+44%2020%208742%201600> >> >> >> +44 203 249 8448 <tel:+44%2020%203249%208448> >> >> >> >> E: michal.borowie...@openbet.com >> <mailto:michal.borowie...@openbet.com> >> W: www.openbet.com <http://www.openbet.com/> >> >> >> OpenBet Ltd >> >> Chiswick Park Building 9 >> >> 566 Chiswick High Rd >> >> London >> >> W4 5XT >> >> UK >> >> >> <https://www.openbet.com/email_promo> >> >> This message is confidential and intended only for the addressee. >> If you have received this message in error, please immediately >> notify the postmas...@openbet.com <mailto:postmas...@openbet.com> >> and delete it from your system as well as any copies. The content >> of e-mails as well as traffic data may be monitored by OpenBet for >> employment and security purposes. To protect the environment >> please do not print this e-mail unless necessary. OpenBet Ltd. >> Registered Office: Chiswick Park Building 9, 566 Chiswick High >> Road, London, W4 5XT, United Kingdom. A company registered in >> England and Wales. Registered no. 3134634. VAT no. GB927523612 >> > > -- > Signature > <http://www.openbet.com/> Michal Borowiecki > Senior Software Engineer L4 > T: +44 208 742 1600 > > > +44 203 249 8448 > > > > E: michal.borowie...@openbet.com > W: www.openbet.com <http://www.openbet.com/> > > > OpenBet Ltd > > Chiswick Park Building 9 > > 566 Chiswick High Rd > > London > > W4 5XT > > UK > > > <https://www.openbet.com/email_promo> > > This message is confidential and intended only for the addressee. If you > have received this message in error, please immediately notify the > postmas...@openbet.com <mailto:postmas...@openbet.com> and delete it > from your system as well as any copies. The content of e-mails as well > as traffic data may be monitored by OpenBet for employment and security > purposes. To protect the environment please do not print this e-mail > unless necessary. OpenBet Ltd. Registered Office: Chiswick Park Building > 9, 566 Chiswick High Road, London, W4 5XT, United Kingdom. A company > registered in England and Wales. Registered no. 3134634. VAT no. > GB927523612 >
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