| From: | "Florian G(dot) Pflug" <fgp(at)phlo(dot)org> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Pavan Deolasee <pavan(dot)deolasee(at)enterprisedb(dot)com> |
| Subject: | Re: CREATE INDEX and HOT - revised design |
| Date: | 2007-03-29 21:48:34 |
| Message-ID: | 460C3432.6000209@phlo.org |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> "Simon Riggs" <simon(at)2ndquadrant(dot)com> writes:
>> ISTM that the run-another-transaction-afterwards idea is the only one
>> that does everything I think we need. I really do wish we could put in a
>> wait, like CIC, but I just think it will break existing programs.
>
> Actually, there's a showstopper objection to that: plain CREATE INDEX
> has to be able to run within a larger transaction. (To do otherwise
> breaks "pg_dump --single-transaction", just for starters.) This means
> it can *not* commit partway through.
I believe the original idea was to invent some kind of "on commit run
this transaction" hook - similar to how files are deleted on commit,
I think. At least I understood the "Run another transaction on commit"
that way...
greetings, Florian Pflug
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