| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Daniel Gustafsson <daniel(at)yesql(dot)se>, "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Peter Geoghegan <pg(at)bowt(dot)ie>, Bruce Momjian <bruce(at)momjian(dot)us>, David Rowley <dgrowleyml(at)gmail(dot)com> |
| Subject: | Re: Improving connection scalability: GetSnapshotData() |
| Date: | 2020-08-16 21:28:46 |
| Message-ID: | 1020079.1597613326@sss.pgh.pa.us |
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| Lists: | Postg젠 토토SQL : |
Andres Freund <andres(at)anarazel(dot)de> writes:
> For the first, one issue is that there's no obviously good candidate for
> an uninitialized xid. We could use something like FrozenTransactionId,
> which may never be in the procarray. But it's not exactly pretty.
Huh? What's wrong with using InvalidTransactionId?
regards, tom lane
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