Re: Streaming replication and non-blocking I/O

Fujii Masao wrote:
> On Wed, Dec 16, 2009 at 6:53 PM, Heikki Linnakangas
> <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>> 0. Begin by connecting to the master just like a normal backend does. We
>> don't necessarily need the new ProtocolVersion code either, though it's
>> probably still a good idea to reject connections to older server versions.
>
> And, I think that such backend should switch to walsender mode when the startup
> packet arrives. Otherwise, we would have to authenticate such backend twice
> on different context, i.e., a normal backend and walsender. So the settings for
> each context would be required in pg_hba.conf. This is odd, I think. Thought?

True.

>> This is identical to what happens when a query is executed against a
>> normal backend using the simple query protocol, so walsender can use
>> PQexec() for this.
>
> s/walsender/walreceiver ?

Right.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com