RE: Exit walsender before confirming remote flush in logical replication

Dear Amit,

> Can't we have this option just as a bool (like shutdown_immediate)?
> Why do we want to keep multiple modes?

Of course we can use boolean instead, but current style is motivated by the post[1].
This allows to add another option in future, whereas I do not have idea now.

I want to ask other reviewers which one is better...

[1]: https://www.postgresql.org/message-id/20230208.112717.1140830361804418505.horikyota.ntt%40gmail.com

Best Regards,
Hayato Kuroda
FUJITSU LIMITED