RE: [PoC] pg_upgrade: allow to upgrade publisher node

Dear Amit,

Thanks for the comment! Next version will be available in upcoming post.

> > > + /* logical replication slots can be migrated since PG17. */
> > > + if (GET_MAJOR_VERSION(new_cluster->major_version) <= 1600)
> > > + return;
> > >
> > > IMO the code matches the comment better if you say < 1700 instead of <=
> 1600.
> >
> > Changed.
> >
> 
> I think it is better to be consistent with the existing code. There
> are a few other checks in pg_upgrade.c that uses <=, so it is better
> to use it in the same way here.

OK, reverted.

> Another minor comment:
> Note that
> +     if the new cluser uses different port number from old one,
> +     <link linkend="sql-altersubscription"><command>ALTER
> SUBSCRIPTION ... CONNECTION</command></link>
> +     command must be also executed on subscriber.
> 
> I think this is true in general as well and not specific to
> pg_upgrade. So, we can avoid adding anything about connection change
> here.

Removed.

Best Regards,
Hayato Kuroda
FUJITSU LIMITED