On Wed, Sep 20, 2023 at 04:54:36PM +0530, Amit Kapila wrote:
> Also, the patch seems to be allowing subscription relations from PG
> >=10 to be migrated but how will that work if the corresponding
> publisher is also upgraded without slots? Won't the corresponding
> workers start failing as soon as you restart the upgrade server? Do we
> need to document the steps for users?
Hmm? How is that related to the upgrade of the subscribers? And how
is that different from the case where a subscriber tries to connect
back to a publisher where a slot has been dropped? There is no need
of pg_upgrade to reach such a state:
ERROR: could not start WAL streaming: ERROR: replication slot "popo" does not exist
--
Michael