I had the following setup Brokers : 3 - all are up and running with min.insync.replicas=3.
I created a topic with the following configuration bin\windows\kafka-topics --zookeeper 127.0.0.1:2181 --topic topic-ack-all --create --partitions 4 --replication-factor 3 I triggered the producer with "ack = all" and producer is able to send the message. However, the problem starts when i start the consumer bin\windows\kafka-console-consumer --bootstrap-server localhost:9094,localhost:9092 --topic topic-ack-all --from-beginning The error is NotEnoughReplicasException: The size of the current ISR Set(2) is insufficient to satisfy the min.isr requirement of 3 NotEnoughReplicasException:The size of the current ISR Set(3) is insufficient to satisfy the min.isr requirement of 3 for partition __con I see two kinds of errors here . I went though the documentation and had also understaning about "min.isr", However, these error messages are not clear . 1. What does it mean by current ISR set ? Is it different for each topic and what it signifies ? 2. I guess min.isr is same as min.insync.replicas . I hope is should have value at least same as "replication factor" ?
