On Thu, Mar 3, 2016 at 10:31:26AM +0900, Michael Paquier wrote: > On Thu, Mar 3, 2016 at 12:47 AM, Alvaro Herrera > <alvhe...@2ndquadrant.com> wrote: > > Well, the CopyData message has an Int32 field for the message length. > > I don't know the FE/BE protocol very well but I suppose each row > > corresponds to one CopyData message, or perhaps each column corresponds > > to one CopyData message. In either case, it's not possible to go beyond > > 2GB without changing the protocol ... > > Based on what I know from this stuff (OOM libpq and other stuff > remnants), one 'd' message means one row. fe-protocol3.c and > CopySendEndOfRow in backend's copy.c are confirming that as well. I am > indeed afraid that having extra logic to get chunks of data will > require extending the protocol with a new message type for this > purpose.
Is there any documentation that needs updating based on this research? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Ancient Roman grave inscription + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
