On Mon, Jul 29, 2019 at 12:39 PM Peter Geoghegan <p...@bowt.ie> wrote: > I think that indexes (or at least B-Tree indexes) will ideally almost > always have tuples that are the latest versions with zheap. The > exception is tuples whose ghost bit is set, whose visibility varies > based on the MVCC snapshot in use. But the instant that the > deleting/updating xact commits it becomes legal to recycle the old > heap TID.
Sorry, I meant the instant the ghost bit index tuple cannot be visible to any possible MVCC snapshot. Which, in general, will be pretty soon after the deleting/updating xact commits. -- Peter Geoghegan
