| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Document WAL rules related to PD_ALL_VISIBLE in README |
| Date: | 2022-11-11 22:14:10 |
| Message-ID: | a50005c1c537f89bb359057fd70e66bb83bce969.camel@j-davis.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Proposed wording attached.
The typical WAL rules are broken for setting PD_ALL_VISIBLE. I'm OK
with that -- rules are meant to be broken -- but it's confusing enough
that I think we should (internally) document it better. This doesn't
guarantee things won't change again in the future, but this behavior
has been stable for a while.
The thread here:
https://postgr.es/m/ee47ee24-2928-96e3-a2b1-97cbe07b2c7b%40garret.ru
also indicates that external projects and tools are relying on our
rules for the page LSNs.
Regards,
Jeff Davis
| Attachment | Content-Type | Size |
|---|---|---|
| v1-0001-Document-WAL-rules-related-to-PD_ALL_VISIBLE-in-R.patch | text/x-patch | 4.8 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Jacob Champion | 2022-11-11 22:28:41 | Re: libpq support for NegotiateProtocolVersion |
| Previous Message | Tom Lane | 2022-11-11 20:05:58 | Making Bitmapsets be valid Nodes |