Andres Freund <andres(at)anarazel(dot)de> writes:
> Query planning via GEQO currently can yield a different plan on every
> invokation of the planner due to its non-exhaustive nature.
> This often can be inconvenient because at times there may be a very
> bad plan. It also makes it very hard to reproduce a problem with GEQO.
Applied with some editorialization. Mainly, I didn't see the point of
preserving the ability to have nondeterministic planning, and I
especially didn't care for having that still be the default behavior.
So I just made it unconditionally initialize the seed. It would of
course take only minor tweaking to do things differently.
regards, tom lane