Have had multiple customer hit this CASSANDRA-15081 issue now, where upgrading from older versions the sstables contain an unknown column (its not present in the dropped_columns in the schema)
This bug is serious as reads return incorrect results and if you run scrub it will drop the row. So hoping to bring it some attention to have the issue resolved. Note I have included a patch that I think does not cause any regressions elsewhere. Regards, Cameron
