liyangbing opened a new issue #1127: selectMapedBuffer request pos invalid, request pos: 513081343, size: 492, fileFromOffset: 43248173187072 URL: https://github.com/apache/rocketmq/issues/1127 **This broker node is always running normally Suddenly received an abnormal message consumption alarm in the morning** 019-03-24 07:40:39 WARN PullMessageThread_44 - selectMapedBuffer request pos invalid, request pos: 513078883, size: 492, fileFromOffset: 43248173187072 2019-03-24 07:40:39 WARN PullMessageThread_10 - selectMapedBuffer request pos invalid, request pos: 513079375, size: 492, fileFromOffset: 43248173187072 2019-03-24 07:40:39 WARN PullMessageThread_55 - selectMapedBuffer request pos invalid, request pos: 513079867, size: 492, fileFromOffset: 43248173187072 2019-03-24 07:40:39 WARN PullMessageThread_72 - selectMapedBuffer request pos invalid, request pos: 513080359, size: 492, fileFromOffset: 43248173187072 2019-03-24 07:40:39 WARN PullMessageThread_85 - selectMapedBuffer request pos invalid, request pos: 513080851, size: 492, fileFromOffset: 43248173187072 2019-03-24 07:40:39 WARN PullMessageThread_67 - selectMapedBuffer request pos invalid, request pos: 513081343, size: 492, fileFromOffset: 43248173187072 **View log found that production message error** 2019-03-24 07:39:22 WARN DispatchMessageService - [BUG]logic queue order maybe wrong, expectLogicOffset: 68498397580 currentLogicOffset: 68498397560 Topic: mclog_programe_log QID: 9 Diff: 20 2019-03-24 07:39:22 WARN DispatchMessageService - [BUG]logic queue order maybe wrong, expectLogicOffset: 68498395820 currentLogicOffset: 68498395800 Topic: mclog_programe_log QID: 10 Diff: 20 2019-03-24 07:39:22 WARN DispatchMessageService - [BUG]logic queue order maybe wrong, expectLogicOffset: 68498397600 currentLogicOffset: 68498397580 Topic: mclog_programe_log QID: 9 Diff: 20 2019-03-24 07:39:22 WARN DispatchMessageService - [BUG]logic queue order maybe wrong, expectLogicOffset: 68498395840 currentLogicOffset: 68498395820 Topic: mclog_programe_log QID: 10 Diff: 20 **environment: rocketmq 3.2.6 , single master structure** two questions _1. Under what circumstances will this happen? 2. How to fix the problem？_
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