On 2014-02-21 08:16:59 -0500, Robert Haas wrote: > On Fri, Feb 21, 2014 at 6:07 AM, Andres Freund <and...@2ndquadrant.com> wrote: > > I can sympathize with the "too much during init" argument, but I don't > > see how moving stuff to the first call would get rid of the problems. If > > we fail later it's going to be just as confusing. > > No, it isn't. If you fail during init the use will expect the slot to > be gone. That's the reason for all of this complexity. If you fail > on first use, the user will expect the slot to still be there.
The primary case for failing is a plugin that either doesn't exist or fails to initialize, or a user aborting the init. It seems odd that a created slot fails because of a bad plugin or needs to wait till it finds a suitable snapshot record. We could add an intermediary call like pg_startup_logical_slot() but that doesn't seem to have much going for it? Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers