RE: [Proposal] Add foreign-server health checks infrastructure

Dear Fujii-san,

Thanks for reviewing!

> I made a couple of small adjustments and attached the updated version.
> If that's ok, I'll go ahead and commit it.
> 
> +         Name of the local user mapped to the foreign server of this
> +         connection, or "public" if a public mapping is used. If the user
> 
> I enclosed "public" with <literal> tag, i.e., <literal>public</literal>.

Right, it should be. I grepped sgml files just in case, but they are tagged by <literal>.

> > I did not done that be cause either of server_name or user_name is NULL and
> > it might be strange. But yes, the example should have more information.
> > Based on that, I added a tuple so that the example has below. Thought?
> >
> > loopback1 - user is "postgres", valid
> > loopback2 - user is "public", valid
> > loopback3 - user is NULL, invalid
> 
> LGTM.
> Also I added the following to the example for clarity:
> 
> postgres=# SELECT * FROM postgres_fdw_get_connections(true);

+1.

Best regards,
Hayato Kuroda
FUJITSU LIMITED