Thread

1. Streaming Replication and CopyOutResponse message

   Fujii Masao <masao.fujii@gmail.com> — 2010-03-26T09:30:32Z

   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
   

2. Re: Streaming Replication and CopyOutResponse message

   Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> — 2010-03-26T12:23:48Z

   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