Tom Lane wrote:
> So: I put the blame on the fact that summarize_range() thinks that
> the tuple offset it has for the placeholder tuple is guaranteed to
> hold good, even across possibly-long intervals where it's holding
> no lock on the containing buffer.
Yeah, I think this is a pretty reasonable explanation for the problem.
I don't understand why it doesn't fail in 9.6.
> Fixing this without creating new problems is beyond my familiarity
> with the BRIN code. It looks like it might be nontrivial :-(
Looking.
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Álvaro Herrera https://www.2ndQuadrant.com/
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