Hi, I just created KIP-29 to add a new configuration of IsrPropagateIntervalMs to KafkaConfig. The motivation is to batch and throttle the ISR propagation in cases where large amount of ISR change occurs such as a broker gets bounced or failed. Otherwise it might overwhelm the controller.
https://cwiki.apache.org/confluence/display/KAFKA/KIP-29+-+Add+an+IsrPropagateIntervalMs+configuration+to+KafkaConfig This is a config addition and is backward compatible. Thoughts? Thanks, Jiangjie (Becket) Qin
