Hi All,
We try to upgrade Kafka from 0.8.0 to 0.10.0.0, and there are two brokers in our Kafka cluster. We need to restart each broker one by one during the upgrade procedure, when we shut down the leader broker, seems the follower broker could take the leader role immediately, but the producer could not send message to the new leader broker successfully during an interval about several minutes (especially for Kafka 0.8.0), if there is a configuration of broker control how long the new leader broker can receive message after switchover? Thanks! Best Regards Johnny