For reference, this commit to the old Tokutek MariaDB server https://github.com/Tokutek/mariadb-server/commit/0e5f4a2bd740502814bdfc652bdd3d4ec08112ef did pretty much exactly what I suggest, skips RFR for tables w/o a PK. See the context around line 11115
For reference, this commit to the old Tokutek MariaDB server https:/ /github. com/Tokutek/ mariadb- server/ commit/ 0e5f4a2bd740502 814bdfc652bdd3d 4ec08112ef did pretty much exactly what I suggest, skips RFR for tables w/o a PK. See the context around line 11115