Hi,
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?
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
