Thread

Re: Adding REPACK [concurrently]

Alvaro Herrera <alvherre@alvh.no-ip.org> — 2026-05-05T15:02:39Z

On 2026-May-05, Antonin Houska wrote:

> However, I failed to notice that COMMIT record of
> a transaction listed in the xl_running_xacts WAL record is not guaranteed to
> follow the xl_running_xacts record in WAL. In other words, even if
> xl_running_xacts is created before a COMMIT record of the contained
> transaction, it may end up at higher LSN in WAL. So the cleanup I relied on
> might not take place.

That's pretty bad news.

> I've got no good idea how to fix that. Not sure I'm able to pursue the
> "database-specific snapshots" feature now.

It appears that the only reasonable course of action at this point is to
revert 0d3dba38c777.

-- 
Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/