Whenever a broker stops or crashes leadership for that broker's partitions transfers to other replicas. This means that by default when the broker is restarted it will only be a follower for all its partitions, meaning it will not be used for client
消费端出现offset重置为latest, earliest现象,类似log: (org.apache.kafka.clients.consumer.internals.Fetcher.handleFetchResponse:) - Fetch offset is out of range, resetting offset 原因:该consumer消费的topic的leader和followers的状态不一致时,发生leader切换,会发生offset out of range,此时consu