Make gistvacuumcleanup() count the actual number of index tuples. Previously, it just returned the heap tuple count, which might be only an estimate, and would be completely the wrong thing if the index is partial. Since this function scans every index page anyway to find free pages, it's practically free to count the surviving index tuples. Let's do that and return an accurate count.
This is easily visible as a wrong reltuples value for a partial GiST index following VACUUM, so back-patch to all supported branches. Andrey Borodin, reviewed by Michail Nikolaev Discussion: https://postgr.es/m/151956654251.6915.675951950408204404.p...@coridan.postgresql.org Branch ------ REL9_5_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/46d98da43e56aa407242fc5ca6c0303f160cd936 Modified Files -------------- src/backend/access/gist/gistvacuum.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-)
