Hi, I've run into an issue using the old high-level consumer, and I'd like to verify that it is indeed a bug (I'm pretty sure it is), or see if I'm just doing something wrong.
The situation is that I have two consumers (A and B) in the same consumer group reading from a single topic. One consumer (A) consumes the full content of the queue, after which the other consumer (B) is simply shut down (without having consumed anything). If I then attempt to continue reading with the first consumer (A), it begins reading from the start of the topic again (i.e. there is duplicate message delivery). What makes this particularly surprising is that it only occurs if auto-commit is disabled, and/or if the second consumer (B) is shut down after A has read the full contents of the topic. A minimal test case which demonstrates this issue is available in this gist: https://gist.github.com/gabrielreid/1d8a35bf3fb021bce27ceaab1b0e6152 Could anyone confirm that I'm not just making a silly mistake somewhere which causes this behavior? Assuming that this is indeed a bug, any pointers on where to look to fix it would also be appreciated. Thanks, Gabriel
