mirrormaker2 replicate mirormaker2 offset

[elvis-cai]

Could we use KafkaMirrorMaker2 to replicate another mirrormaker2, the issue we found is mm2 is only able to replicated offsets for topic __consumer_offsets, however for mirrormaker itself, it is not using that topic, it's using internal topics sth like mm2-offsets.src.internal instead.
The issue we found is when migrating mm2 as part of consumers, it will reset offset to earliest for all topics, which is not ideal.

[elvis-cai]

maybe not related to the operator, it's the issue with mm2 itself, find some clues, will add more info later.