Here is the bug: Memcached get: Block: 51f0:7:48d8 : Thread : 1095784784 time:226 Memcached get: Block: 51f0:1:6e8a : Thread : 1096051024 time:542 Memcached get: Block: 51f0:1:5c41 : Thread : 1095203152 time:463 Memcached get: Block: 51f0:7:2aff : Thread : 1095469392 time:614 Memcached get: Block: 51f0:1:8fb5 : Thread : 1094334800 time:473 Memcached get: Block: 51f0:4:2a8 : Thread : 1150839120 time:153 Memcached get: Block: 51f0:7:4e7 : Thread : 1150306640 time:921 InnoDB: error in sec index entry update in InnoDB: index `myidx1` of table `dbt2`.`new_order` InnoDB: tuple DATA TUPLE: 3 fields; 0: len 4; hex 8000000f; asc ;; 1: len 4; hex 80000cec; asc ;; 2: len 4; hex 80000003; asc ;; InnoDB: record PHYSICAL RECORD: n_fields 3; compact format; info bits 32 0: len 4; hex 8000000f; asc ;; 1: len 4; hex 80000cec; asc ;; 2: len 4; hex 80000002; asc ;; TRANSACTION 0 1387899, ACTIVE 0 sec, process no 20975, OS thread id 1150572880 updating or deleting mysql tables in use 1, locked 1 15 lock struct(s), heap size 3024, 24 row lock(s), undo log entries 22 MySQL thread id 28, query id 20822257 localhost root updating DELETE FROM new_order WHERE no_o_id = 3308 AND no_w_id = 15 AND no_d_id = 3 InnoDB: Submit a detailed bug report to http://bugs.mysql.com Memcached get: Block: 51f0:7:6186 : Thread : 1096583504 time:536 Memcached get: Block: 51f0:7:2709 : Thread : 1094334800 time:773 Memcached get: Block: 51f0:7:270a : Thread : 1094334800 time:551 Memcached get: Block: 51f0:1:b37e : Thread : 1150040400 time:523 Memcached get: Block: 51f0:7:44d4 : Thread : 1094334800 time:270 Memcached get: Block: 51f0:1:d9e : Thread : 1095203152 time:216 Memcached get: Block: 51f0:7:46b5 : Thread : 1150306640 time:1036 Memcached get: Block: 51f0:1:2a65 : Thread : 1094867280 time:358 Memcached get: Block: 51f0:7:3495 : Thread : 1095469392 time:417 Memcached get: Block: 51f0:1:959c : Thread : 1097738576 time:323 Memcached get: Block: 51f0:3:a1c7 : Thread : 1094601040 time:450 Memcached get: Block: 51f0:1:9b18 : Thread : 1097738576 time:471 Memcached get: Block: 51f0:7:276 : Thread : 1150572880 time:270 Memcached get: Block: 51f0:7:4596 : Thread : 1094334800 time:277 Memcached get: Block: 51f0:7:f20 : Thread : 1150040400 time:273 Memcached get: Block: 51f0:7:28d1 : Thread : 1094334800 time:301 Memcached get: Block: 51f0:7:4b9c : Thread : 1094601040 time:655 Memcached get: Block: 51f0:1:6de2 : Thread : 1096317264 time:194 Memcached get: Block: 51f0:1:29ec : Thread : 1150839120 time:141 Memcached get: Block: 51f0:7:298 : Thread : 1150572880 time:521 Memcached get: Block: 51f0:1:3d0 : Thread : 1095203152 time:107 Memcached get: Block: 51f0:7:1e71 : Thread : 1094867280 time:2160 Memcached get: Block: 51f0:1:54c7 : Thread : 1094334800 time:317 Memcached get: Block: 51f0:1:a799 : Thread : 1094068560 time:450 InnoDB: error in sec index entry update in InnoDB: index `myidx1` of table `dbt2`.`new_order` InnoDB: tuple DATA TUPLE: 3 fields; 0: len 4; hex 8000000f; asc ;; 1: len 4; hex 80000ced; asc ;; 2: len 4; hex 80000003; asc ;; InnoDB: record PHYSICAL RECORD: n_fields 3; compact format; info bits 32 0: len 4; hex 8000000f; asc ;; 1: len 4; hex 80000ced; asc ;; 2: len 4; hex 80000002; asc ;; TRANSACTION 0 1388669, ACTIVE 0 sec, process no 20975, OS thread id 1094601040 updating or deleting mysql tables in use 1, locked 1 15 lock struct(s), heap size 3024, 35 row lock(s), undo log entries 32 MySQL thread id 23, query id 20834926 localhost root updating DELETE FROM new_order WHERE no_o_id = 3309 AND no_w_id = 15 AND no_d_id = 3 InnoDB: Submit a detailed bug report to http://bugs.mysql.com Memcached get: Block: 51f0:1:980e : Thread : 1097738576 time:302 Memcached get: Block: 51f0:7:cf4 : Thread : 1094867280 time:367 Memcached get: Block: 51f0:7:33f1 : Thread : 1096051024 time:273 Memcached get: Block: 51f0:1:987a : Thread : 1097738576 time:314 Memcached get: Block: 51f0:7:2318 : Thread : 1151105360 time:318 Memcached get: Block: 51f0:1:a756 : Thread : 1094068560 time:107 Memcached get: Block: 51f0:7:47e2 : Thread : 1150306640 time:352