On Tue, Aug 15, 2017 at 10:54 AM, Robert Haas <robertmh...@gmail.com> wrote: >> Or at least make the filtering optional. > > I don't think "filtering" is the right way to think about it. It's > just labeling each combination of bits with the meaning appropriate to > that combination of bits.
I do. -1 to not just showing what's on the page -- if the HEAP_XMIN_COMMITTED and HEAP_XMIN_ABORTED bits are set, then I think we should show them. Yeah, I accept that there is a real danger of confusing people with that. Unfortunately, I think that displaying HEAP_XMIN_FROZEN will cause even more confusion. I don't think that HEAP_XMIN_FROZEN is an abstraction at all. It's a notational convenience. I don't think it's our place to "interpret" the bits. Are we *also* going to show HEAP_XMIN_FROZEN when xmin is physically set to FrozenTransactionId? Where does it end? I think that we should prominently document that HEAP_XMIN_COMMITTED |HEAP_XMIN_ABORTED == HEAP_XMIN_FROZEN, rather than trying to hide complexity that we have no business hiding in a tool like pageinspect. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers