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a1bc4d3590
The number of relation pages is tricky to get right in a portable way, particularly across 32b and 64b builds, but checking after the existence of the FSM and if there is any space available space should be stable enough with a minimal number of tuples involved. This commit introduces checks on a table with some btree, BRIN and hash indexes, as a first attempt. Author: Dong Wook Lee, Fabrízio de Royes Mello, Michael Paquier Discussion: https://postgr.es/m/CAAcByaJ5KW3bd7fJr=jPEyK8M_UzXJFHHBVuOcBe+JHD8txRyQ@mail.gmail.com