Hello Radim, thanks for testing!
On 2026-Sep-30, Radim Marek wrote:
> Aha, so on my way to office I started thinking and got more silly ideas,
> and now can confirm this is more widespread than logical subscriber use
> case.
Oh, thanks for the simplified test case. We can fix this easily by
setting the column to null in the tuple to write out, as in the attached
patch. The adjust_toast_pointers() function should perhaps be renamed,
and the comment rewritten, since it's no longer just about toast ...
I didn't do that though.
I put together a crude test case to verify with isolationtester.
Without the fix, this reproduces the bloat you saw; with the fix, the
toast table's size after the repack is zero. This needs some more
boiling before being committable, but it suffices to show the problem.
Regards
--
Álvaro Herrera Breisgau, Deutschland — https://www.EnterpriseDB.com/
"The Gord often wonders why people threaten never to come back after they've
been told never to return" (www.actsofgord.com)
