kafka超时导致的重复消费的问题

kafka超时导致的重复消费的问题

今天看到群友遇到个问题：

问题的表象是超时导致autoCommit失败，从而导致重复消费

错误内容是：

2018-08-21 00:00:00.938 [kudu-0-C-1] WARN o.sumer.internals.ConsumerCoordinator - Auto offset commit failed for group sm: Commit cannot be completed since the group has already rebalanced and assigned the partitions to another member. This means that the time between subsequent calls to poll() was longer than the configured max.poll.interval.ms, which typically implies that the poll loop is spending too