Mike Sidorov

@jszwedko does this mean that with concurrency of `1` and end-to-end acknowledgments enabled with in-memory buffers along the way, the size of this buffers will always be 1?

So the next batch might be sent before the acknowledgement received for the previous one? If so, this might lead to reordering as well, if the retry for the first...

Sure! I am new to rust though, so let me know if anything is going to be off

It seems like the offset was indeed set to the offset of the newly written part of the line