Dear Amit,
> The problem here is that after ALTER SUBSCRIPTION tap_sub SET
> PUBLICATION ..., we didn't wait for the new walsender on publisher to
> start. We must use wait_for_subscription_sync both after the "CREATE
> SUBSCRIPTION ..." and the "ALTER SUBSCRIPTION ..." commands and keep
> copy_data=true to ensure the initial replication is setup between
> publisher and subscriber. This is how we use these commands at other
> places.
Agreed. PSA the patch to fix the issue.
Best regards,
Hayato Kuroda
FUJITSU LIMITED