Description of problem: Tried upgrading a cluster from 4.x to 5.1 One of the OSD continously crashing (6016 and continuing) Checked some of the crashes. All of them were in assert_func": "void BlueStore::_txc_apply_kv(BlueStore::TransContext*, bool)", Version-Release number of selected component (if applicable): 16.2.6 How reproducible: Tried once Steps to Reproduce: 1. Configure 4.x cluster 2. Upgrade it to 5.1 Actual results: OSD is crashing continuously Expected results: OSD should not crash or OSD should join back surviving crashes Additional info: