On Tue, Dec 3, 2013 at 11:57 AM, Michael Paquier <michael.paqu...@gmail.com> wrote: > On Tue, Dec 3, 2013 at 1:08 AM, Robert Haas <robertmh...@gmail.com> wrote: >> As long as it was set at >> the time the master last entered read-write mode (which is what the >> XLOG_PARAMETER_CHANGE stuff does) you should be fine, unless of course >> I haven't had enough caffeine this morning, which is certainly >> possible. > Indeed, I forgot this code path. Completing XLogReportParameters for > saving the state and xlog_redo for replay would be enough. Wait a minute, I retract this argument. By using this method a master server would be able to produce WAL files with inconsistent hint bit data when they are replayed if log_hint_bits is changed after a restart of the master. -- Michael
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