create table t1 (a int primary key, b int, c int, unique key(b), key(c)) engine=aria transactional=1; insert into t1 values (1000,1000,1000); insert into t1 select seq,seq+100, seq+200 from seq_1_to_10; SET GLOBAL debug_dbug="+d,crash_end_bulk_insert"; REPLACE into t1 select seq+20,seq+95, seq + 300 from seq_1_to_10; ERROR HY000: Lost connection to MySQL server during query check table t1; Table Op Msg_type Msg_text test.t1 check status OK select sum(a),sum(b),sum(c) from t1; sum(a) sum(b) sum(c) 1055 2055 3055 drop table t1;