| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Greg Stark <stark(at)mit(dot)edu>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Freeze avoidance of very large table. |
| Date: | 2015-12-18 17:09:43 |
| Message-ID: | CA+TgmoZCCFwgKL0PmSi=htfZ2aCOZPoTPD73ecvSA9rhXa0zUw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Dec 17, 2015 at 1:17 AM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> I am not really getting the meaning of this sentence. Shouldn't this
> be reworded something like:
> "Freezing occurs on the whole table once all pages of this relation require it."
That statement isn't remotely true, and I don't think this patch
changes that. Freezing occurs on the whole table once relfrozenxid is
old enough that we think there might be at least one page in the table
that requires it.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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