I see, interesting. We have lots of unlogged tables, upon a crash we want to create a feedback/alert that data disappeared.
Not very familiar with the internal structure, but is it possible to identify if the current table is the INIT_FORKNUM? Gersner On Tue, Aug 29, 2017 at 11:27 AM, Michael Paquier <michael.paqu...@gmail.com > wrote: > On Tue, Aug 29, 2017 at 5:17 PM, Gersner <gers...@gmail.com> wrote: > > Is there a reliable way to distinguish between an empty unlogged table > to an > > unlogged table which has been truncated due to a crash? > > Why do you want to make such a difference? At the beginning of a crash > recovery all the, the existing relation files of unlogged tables are > all removed, and replaced by the init forknum which represents their > initial state. You can see by yourself ResetUnloggedRelations & > friends in reinit.c. > -- > Michael >
