Horton

Re: Online enabling of checksums

Bruce Momjian <bruce@momjian.us>

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From: Bruce Momjian <bruce@momjian.us>
To: Andres Freund <andres@anarazel.de>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>, Daniel Gustafsson <daniel@yesql.se>, Robert Haas <robertmhaas@gmail.com>, Magnus Hagander <magnus@hagander.net>, Andrey Borodin <x4mmm@yandex-team.ru>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, Heikki Linnakangas <hlinnaka@iki.fi>, Michael Banck <michael.banck@credativ.de>, Greg Stark <stark@mit.edu>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2018-08-01T16:45:27Z
Lists: pgsql-hackers 
On Wed, Aug  1, 2018 at 09:39:43AM -0700, Andres Freund wrote:
> On 2018-08-01 12:36:13 -0400, Bruce Momjian wrote:
> > This patchset is weird because it is perhaps our first case of trying to
> > change the state of the server while it is running.  We just don't have
> > an established protocol for how to orchestrate that, so we are limping
> > along toward a solution.
> 
> There's a number of GUCs that do this? Even in related areas,
> cf. full_page_writes.

How is that taking the server from one state to the next in a
non-instantaneous way?

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +

Commits

  1. Online enabling and disabling of data checksums

  2. Deactive flapping checksum isolation tests.

  3. Add support for coordinating record typmods among parallel workers.