30.07.2021 14:10, Ivan Přenosil wrote:
Enabling replication of table by
ALTER TABLE tab ENABLE PUBLICATION;
is replicated, while
ALTER DATABASE INCLUDE TABLE tab TO PUBLICATION;
is not replicated.
Is it bug or by design?
ALTER DATABASE commands are not replicated, because they may include
file-system specifics (e.g. ADD SHADOW or DIFFERENCE FILE), or cause
database locks (BEGIN/END BACKUP), or encrypt the database.
But perhaps we should be more intelligent here and allow some ALTER
commands to be replicated -- those which are "internal" to the database.
However, I'm wondering whether it's expected that the replica database
may suddenly become "master" after ENABLE PUBLICATION is replicated
(provided replica is read-write and replication.conf is set up).
Dmitry
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