Re: [BUGS] BUG #14825: enum type: unsafe use?
Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
From: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Christophe Pettus <christophe.pettus@pgexperts.com>,
pgsql-bugs@postgresql.org, pgsql-hackers@postgresql.org,
"David E. Wheeler" <david@justatheory.com>
Date: 2017-09-25T14:55:58Z
Lists: pgsql-bugs, pgsql-hackers
On 09/25/2017 10:42 AM, Tom Lane wrote: > Andrew Dunstan <andrew.dunstan@2ndquadrant.com> writes: >> On 09/25/2017 10:14 AM, Tom Lane wrote: >>> Oh ... I did not think we were on the same page, because your patch >>> didn't include removal of the same-transaction heuristic. It'd be >>> sensible to do that as a separate patch, though, to make it easier >>> to put back if we decide we do want it. >> I understood you to say that the blacklist patch was all we needed to do >> for v10. That's my position, i.e. I think we can live with the heuristic >> test for now if the blacklist patch is applied. Maybe we need to >> document that the heuristic test can generate some false negatives when >> testing for a type that is created in the current transaction. > No, as I said upthread, I want the heuristic out of there. I think the > blacklist idea covers enough use-cases that we possibly don't need the > same-transaction test at all. Furthermore I'm doubtful that the heuristic > form of the same-transaction test is adequate to satisfy the use-cases > that the blacklist test doesn't cover. So I think we should remove that > test and see whether we get any complaints, and if so what the details of > the real-world use-cases look like. > > Let's ask a couple of users who I think are or have been actually hurting on this point. Christophe and David, any opinions? cheers andrew -- Andrew Dunstan https://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Commits
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Revert to 9.6 treatment of ALTER TYPE enumtype ADD VALUE.
- 28e072707685 11.0 landed
- 93a1af0b3f63 10.0 landed
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Remove heuristic same-transaction test from check_safe_enum_use().
- 01c5de88ff24 10.0 landed
- 984c92074d84 11.0 landed
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Use a blacklist to distinguish original from add-on enum values.
- 175774d2932d 10.0 landed
- 1635e80d30b1 11.0 landed
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Add support for coordinating record typmods among parallel workers.
- cc5f81366c36 11.0 cited