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From: David G. Johnston <[email protected]>
To: Amit Kapila <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Logical Replication upgrade
Date: Wed, 15 Apr 2026 22:46:06 -0700
Message-ID: <CAKFQuwaWUuXJYZSMKtiXFT=kFK-sFg+pSwK0MUN-MBEEobkfBg@mail.gmail.com> (raw)
In-Reply-To: <CAA4eK1+dR-sEGM+oC7H_-7PrBJBcdM2o5-eS6JrkMBJ0FOA54Q@mail.gmail.com>
References: <[email protected]>
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On Wednesday, April 15, 2026, Amit Kapila <[email protected]> wrote:

>
> So, how about: "All slots on the old cluster must be usable, i.e.,
> their pg_replication_slots.conflicting is false."?
>

That works.

Then we’d also change:

The new cluster must not have permanent logical slots, i.e., there must be
no slots where pg_replication_slots.temporary is false.

To be:

“The new cluster is only permitted to have temporary logical slots, i.e.,
ones where pg_replication_slots.temporary is true.”

We could make it mirror the above one more closely, but as the former
mentions the old cluster and the later the new one, I kinda like the
different flow, less likely to skim over it.

David J.


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