On Tue, Apr 17, 2018 at 12:12:26PM -0700, Andres Freund wrote: > On 2018-04-17 15:09:18 -0400, Tom Lane wrote: >> Alvaro Herrera <alvhe...@alvh.no-ip.org> writes: >>> Andres was working on a radix tree structure to fix this problem, but >>> that seems to be abandoned now, and it seems a major undertaking. > > I hope to re-ignite work on that later in the v12 cycle. But > realistically that means it's not going to be mergable for v12.
Need a push of man-hours for that? >>> While I agree that the proposed solution is a wart, it seems much >>> better than no solution at all. Can we consider Fujii's proposal as >>> a temporary measure until we fix shared buffers? I'm +1 on it >>> myself. >> >> Once we've introduced a user-visible reloption it's going to be >> practically impossible to get rid of it, so I'm -1. > > It's not much work to maintain though? And even the brief AEL lock can > cause troubles, leaving the scan aside. So I'm like +0.1 or such. I would say that if the radix tree patch can make it for the first commit fest and has reviews, then there would be likely no need for this reloption. -- Michael
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