Re: snapshot too old issues, first around wraparound and then more.

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>

To: pgsql-hackers@postgresql.org, Kevin Grittner <kgrittn@gmail.com>

Date: 2020-04-01T14:01:28Z

Lists: pgsql-hackers

Attachments

debug.diff (text/x-diff) patch

Hi,

On 2020-03-31 23:40:08 -0700, Andres Freund wrote:
> I added some debug output to print the mapping before/after changes by
> MaintainOldSnapshotTimeMapping() (note that I used timestamps relative
> to the server start in minutes/seconds to make it easier to interpret).

Now attached.

Greetings,

Andres Freund

Commits

Remove the "snapshot too old" feature.
- f691f5b80a85 17.0 landed
Improve timeout.c's handling of repeated timeout set/cancel.
- 09cf1d522676 14.0 cited
Fix two bugs in MaintainOldSnapshotTimeMapping.
- 55b7e2f4d78d 14.0 cited