From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
cc: Alvaro Herrera <alvherre@2ndquadrant.com>,
        Thomas Munro <thomas.munro@gmail.com>,
 vignesh C <vignesh21@gmail.com>,
        Amit Kapila <amit.kapila16@gmail.com>,
        Jerry Sievers <gsievers19@comcast.net>,
        Tomas Vondra <tomas.vondra@2ndquadrant.com>,
        pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: SegFault on 9.6.14
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Comments: In-reply-to Robert Haas <robertmhaas@gmail.com>
	message dated "Mon, 12 Aug 2019 17:42:21 -0400"
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Date: Mon, 12 Aug 2019 17:48:33 -0400
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Robert Haas <robertmhaas@gmail.com> writes:
> Being able to do that sort of thing was one of my goals in designing
> the ExecShutdownNode stuff.  Unfortunately, it's clear from this bug
> report that it's still a few bricks short of a load, and Tom doesn't
> seem real optimistic about how easy it will be to buy those bricks at
> discount prices. But I hope we persist in trying to get there, because
> I don't like the idea of saying that we'll never be smart enough to
> know we're done with any part of the plan until we're definitely done
> with the whole thing. I think that's leaving too much money on the
> table.

To clarify my position --- I think it's definitely possible to improve
the situation a great deal.  We "just" have to pass down more information
about whether rescans are possible.  What I don't believe is that that
leads to a bug fix that would be sane to back-patch as far as 9.6.

			regards, tom lane