| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Kevin Grittner <kgrittn(at)ymail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net>, "Hilbert, Sebastian" <Sebastian(dot)Hilbert(at)gmx(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [GENERAL] pg_upgrade ?deficiency |
| Date: | 2013-11-22 21:52:53 |
| Message-ID: | 20131122215253.GH17400@alap2.anarazel.de |
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| Lists: | pgsql-general pgsql-hackers |
On 2013-11-22 13:34:18 -0800, Kevin Grittner wrote:
> Oddly, it didn't complain about creating users within a read-only
> transaction. That seems like a potential bug.
There's lots of things that escape XactReadOnly. I've thought (and I
think suggested) before that we should put in another layer of defense
by also putting a check in AssignTransactionId(). Imo the compatibility
woes (like not being able to run SELECT txid_current();) are well worth
the nearly ironclad guarantee that we're not writing.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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