On 2020-Aug-25, Ranier Vilela wrote: > And it is guaranteed that, rs_cblock is not InvalidBlockNumber when the > page is read?
It could be InvalidBlockNumber if sufficient neutrinos hit the memory bank and happen to set all the bits in the block number. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services