Re: ConnectedIterativeStreams and processing state 1.4.2

I could but the external Rest call is done with async operator and I want to reduce the number of objects going to async and it would require that I store the state in the async operator to. Med venlig hilsen / Best regards Lasse Nedergaard > Den 3. maj 2018 kl. 13.09 skrev Aljoscha Krettek

Re: ConnectedIterativeStreams and processing state 1.4.2

Couldn't you do that in one operator then? I mean doing the calls and caching the results? > On 3. May 2018, at 12:28, Lasse Nedergaard wrote: > > Hi. > > The idea is to cache the latest enrichment data to reuse them and thereby > limit the number of external

Re: ConnectedIterativeStreams and processing state 1.4.2

Hi. The idea is to cache the latest enrichment data to reuse them and thereby limit the number of external enrichment calls a local cache in Flink as many of our data objects are enriched with the same data. An alternative solution could be to store the enriched data in Kafka and then stream

Re: ConnectedIterativeStreams and processing state 1.4.2

Hi, Why do you want to do the enrichment downstream and send the data back up? The problem is that feedback edges (or iterations, they are the same in Flink) have some issues with fault-tolerance. Could you maybe outline a bit more in-depths what you're doing and what the flow of data and

Re: ConnectedIterativeStreams and processing state 1.4.2

Hi. Because the data that I will cache come from a downstream operator and iterations was the only way to look data back to a prev. Operator as I know Med venlig hilsen / Best regards Lasse Nedergaard > Den 2. maj 2018 kl. 15.35 skrev Piotr Nowojski : > > Hi, > >

Re: ConnectedIterativeStreams and processing state 1.4.2

Hi, Why can not you use simple CoProcessFunction and handle cache updates within it’s processElement1 or processElement2 method? Piotrek > On 1 May 2018, at 10:20, Lasse Nedergaard wrote: > > Hi. > > I have a case where I have a input stream that I want to enrich

ConnectedIterativeStreams and processing state 1.4.2

Hi. I have a case where I have a input stream that I want to enrich with external data. I want to cache some of the external lookup data to improve the overall performances. To update my cache (a CoProcessFunction) I would use iteration to send the external enriched information back to the cache