Hi, I have created a topic with the number of partitions as 5 and replication factor as 3. I have 5 Kafka brokers up and running.
What happens if a broker with broker id '0' is down ? My observation is as follows. 1. The brokers are running as before and responding to the producers as well as the consumers. 2. A new leader is elected for all the topics/partitions for which the broker with id 0 is the leader. 3. The ISR is updated with the available brokers (in this case 2 brokers for some topic/partition combination). 4. The ISR has 3 brokers after the broker with id 0 is up and running again. I have a question on this: Why the (topics/partition) combination which has broker with id 0 in their replication list does not find a new broker and replicate the messages? Is this the intended behavior of Kafka ?
