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Re: Streaming Replication and CopyOutResponse message

Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>

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From: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
To: Fujii Masao <masao.fujii@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2010-03-26T12:23:48Z
Lists: pgsql-hackers 
Fujii Masao wrote:
> At the end of the handshake for replication, a CopyOutResponse
> message might not arrive at the standby for a while if there is
> no WAL record to send. Also walreceiver would get stuck until
> that message has arrived. This is not a big problem, but should
> be fixed.
> 
> The cause is that walsender hasn't called pq_flush() there.
> The attached patch changes walsender so as to call pg_flush()
> immediately when sending that message. Is it worth applying
> the patch?

Yeah, applied.

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