That's too bad. Logical decoding is incredibly powerful, but if it ultimately comes down to picking between HA or logical decoding the choice to use it becomes a lot more difficult.
Are you saying that logical decoding is receiving a different design in 10.0? (For clarify - is 10.0 the next scheduled release after 9.6 - so next year?). If so, I'd greatly appreciate any more info you have on the new design (even patches if you have them).
> I'm using logical decoding in my application to capture change streams and > ship them to Kafka. However, logical replication slots aren't included in > the WAL and thus don't make it to replicas. In the case of a failover, it's > not clear what (if anything) can be done to continue receiving a change > stream. > > I noticed there was a failover slot patch that looks like it won't be making > it for 9.6 (if at all), but does anyone else have suggestions for handling > failover + logical decoding? Is there an answer, or is it limited to being a > very manual process for now?
Hi Colin,
Yes, its a current issue.
A patch was submitted but not applied to 9.6 for this, so the issue continues. As a result, 2Q support that as a custom solution for a number of customers.
A different design will be submitted for the next release, 10.0.
-- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services