Florian G. Pflug wrote:

>Hi
>
>Here is an attempt at integrating my algorithm into slony1.
>I tried it on one of the nodes of my slony cluster, and
>it seems to generate correct listen entries, but haven't
>tested anything else yet.
>
>The thing I'm most unsure about is if the logic regarding
>set-subscriptions is correct. At the moment, I ignore
>a possible sl_listen entry if there is a subscription
>with set-origin = li_origin, set-subscriber = li_receiver
>and set-provider != li_provider. Are there any other
>special cases to watch out for?
>
>The attached file contains two functions - A replacement
>fro RebuildListenEntries, and a helper calles
>ReachableFromNode.
>
>greetings, Florian Pflug
>  
>
I have been trying the functions out; the results are looking pretty
good thus far.

One issue:  The array handling isn't compatible with PG 7.3.

If we adopt this, it means officially declaring that 7.3 is no longer
supported.

I don't consider that a forcibly disastrous change; we have been
debating for quite a while when 7.3 would stop being supported.

I think I need to write up a function to evaluate sl_listen in order to
have a proper test...