On Sat, Jun 24, 2017 at 09:24:21AM +0530, Amit Kapila wrote: > > I was not clear. I was not saying there can be only one extra WAL file. > > I am saying the "Latest checkpoint location" should be one WAL file > > farther on the master. I think the big problem is that we need a full > > replay of that WAL file, not just having it one less than the master. > > > > If the user has properly shutdown, then that last file should only > have checkpoint record, is it safe to proceed with upgrade without > actually copying that file?
Yes, but how do we know they processed all the records in the second-to-last WAL file (in WAL shipping mode). -- 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
