@Gail Badner I'm not sure. I think that my task describes slightly different problem. It can be due to this, that HHH-3930 Open task is very old and a lot of changes vere made in hibernate since then. HHH-3930 Open describes n+1 query problem when fetching strategy is EAGER, and probably 2n+1 problem when LAZY fetch was choosed.

According to my test, now hibernate behaves differently and worse than before. It get 2n+1 problem in case of EAGER fetching, and n+1 when fetch join is used.