flink-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bart van Deenen <bartvandee...@fastmail.fm>
Subject what happens to the aggregate in a fold on a KeyedStream if the events for a key stop coming ?
Date Fri, 18 Mar 2016 10:42:15 GMT
If I do a fold on a KeyedStream, I aggregate events for such-and-such
key. 
My question is, what happens with the aggregate (and its key) when
events for this key stop coming? 
My keys are browser session keys, and are virtually limitless. 

Ideally, I'd like to send some sort of purge event on keys a couple of
days later, where I empty the aggregate in the fold. That still leaves
the key though, where does that go?

Any answers highly appreciated...

Greetings

Bart

Mime
View raw message