Re: Freeze avoidance of very large table. - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Freeze avoidance of very large table.
Date
Msg-id CA+TgmoZCCFwgKL0PmSi=htfZ2aCOZPoTPD73ecvSA9rhXa0zUw@mail.gmail.com
Whole thread Raw
In response to Re: Freeze avoidance of very large table.  (Michael Paquier <michael.paquier@gmail.com>)
Responses Re: Freeze avoidance of very large table.  (Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>)
List pgsql-hackers
On Thu, Dec 17, 2015 at 1:17 AM, Michael Paquier
<michael.paquier@gmail.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



pgsql-hackers by date:

Previous
From: Robert Haas
Date:
Subject: Re: Remove array_nulls?
Next
From: Andres Freund
Date:
Subject: Re: Remove array_nulls?