> If a Broker machine goes down, is restarted and hostname of the machine
> changes, in this case would the logs on the machine become available or
> would they be lost. I would really appreciate if you could provide some
> details on how this would work.
The logs will still be available.
> I see that a consumer going down triggers a rebalance and the paper
> mentions that the rebalance happens pretty quickly. If we have a fickle
> consumer that for some reason starts up and crashes, again and again, would
> that block the entire Kafka system?
Only that consumer group will be affected. Other consumer groups and
producers should be fine.