As Boyang mentioned, Kafka Streams intentionally does not send a LeaveGroup
request
when shutting down. This is because often the shutdown is not due to a
scaling down event
but instead some transient closure, such as during a rolling bounce. In
cases where the
instance is expected to start up
That will get you a good approximation, but it's not guaranteed to be
completely accurate. Offsets in Kafka are not guaranteed to be continuous.
For topics with log compaction enabled, the removed records will leave
(potentially very large) holes in the offsets.
Even for topics without log
