| From: | "tsunakawa(dot)takay(at)fujitsu(dot)com" <tsunakawa(dot)takay(at)fujitsu(dot)com> |
|---|---|
| To: | 'Laurenz Albe' <laurenz(dot)albe(at)cybertec(dot)at>, 'Masahiko Sawada' <masahiko(dot)sawada(at)2ndquadrant(dot)com> |
| Cc: | Masahiro Ikeda <ikedamsh(at)oss(dot)nttdata(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Muhammad Usama <m(dot)usama(at)gmail(dot)com>, amul sul <sulamul(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Álvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Ildar Musin <ildar(at)adjust(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Chris Travers <chris(dot)travers(at)adjust(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp> |
| Subject: | RE: Transactions involving multiple postgres foreign servers, take 2 |
| Date: | 2020-07-17 08:29:08 |
| Message-ID: | TYAPR01MB29906CD539FA0C2716D4D2C5FE7C0@TYAPR01MB2990.jpnprd01.prod.outlook.com |
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| Lists: | pgsql-hackers |
From: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
> On Fri, 2020-07-17 at 05:21 +0000, tsunakawa(dot)takay(at)fujitsu(dot)com wrote:
> > And most importantly, do other major DBMSs, including Oracle, provide the
> API for
> > preparing a transaction? In other words, will the FDWs other than
> postgres_fdw
> > really be able to take advantage of the new FDW functions to join the 2PC
> processing?
> > I think we need to confirm that there are concrete examples.
>
> I bet they do. There is even a standard for that.
If you're thinking of xa_prepare() defined in the X/Open XA specification, we need to be sure that other FDWs can really utilize this new 2PC mechanism. What I'm especially wondering is when the FDW can call xa_start().
Regards
Takayuki Tsunakawa
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