Re: Streaming replication and postmaster signaling

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От Alvaro Herrera
Тема Re: Streaming replication and postmaster signaling
Дата
Msg-id 20100105142953.GE3660@alvh.no-ip.org
обсуждение исходный текст
Ответ на Streaming replication and postmaster signaling  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Ответы Re: Streaming replication and postmaster signaling  (Fujii Masao <masao.fujii@gmail.com>)
Список pgsql-hackers
Heikki Linnakangas escribió:
> Looking at the latest streaming replication patch, I don't much like the
> signaling between WAL sender and postmaster. It seems complicated, and
> as a rule of thumb postmaster shouldn't be accessing shared memory. The
> current signaling is:
> 
> 1. A new connection arrives. A new backend process is forked forked like
> for a normal connection.

This was probably discussed to death earlier, but: why was it decided to
not simply use a different port for listening for walsender
connections?


-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.


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