Re: Transaction callback

Tom Lane wrote:
> I got the impression that Thomas wanted this in order to kluge up
> some kind of two-phase-commit support, in which case he really needs
> to get control at the point where we're just about to really truly
> commit (ie, write the commit WAL record).  That's certainly not a
> location where we want random users to be inserting code; as such
> I don't think that exposing a callback hook is the right answer.
> My advice to him is to go in and change the code.

Yes, it can't be used for more advanced stuff like 2-phase commit.  I
know some were asking for callbacks on (clean) session exit, and it
seemed like a natural extension.

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