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help / color / mirror / Atom feedFrom: Tom Lane <[email protected]>
To: Robert Haas <[email protected]>
Cc: Amit Langote <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Daniel Gustafsson <[email protected]>
Cc: David Rowley <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Thom Brown <[email protected]>
Subject: Re: generic plans and "initial" pruning
Date: Mon, 19 Aug 2024 13:52:07 -0400
Message-ID: <[email protected]> (raw)
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Robert Haas <[email protected]> writes:
> But that seems somewhat incidental to what this thread is about.
Perhaps. But if we're running into issues related to that, it might
be good to set aside the long-term goal for a bit and come up with
a cleaner answer for intra-session locking. That could allow the
pruning problem to be solved more cleanly in turn, and it'd be
an improvement even if not.
> Do you have a view on what the way forward might be?
I'm fresh out of ideas at the moment, other than having a hope that
divide-and-conquer (ie, solving subproblems first) might pay off.
> This thread has gotten a tad depressing, honestly. All of the opinions
> about what we ought to do seem to be based on the firm conviction that
> X or Y or Z will not work, rather than on the confidence that A or B
> or C will work. Yet I'm inclined to believe this problem is solvable.
Yeah. We are working in an extremely not-green field here, which
means it's a lot easier to see pre-existing reasons why X will not
work than to have confidence that it will work. But hey, if this
were easy then we'd have done it already.
regards, tom lane
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