No More ZooKeeper

Kafka is removing its dependency on ZooKeeper, which has been an integral part of Kafka clusters for metadata management. The motivation behind this change is to overcome limitations such as single point of failure, scalability issues, high recovery time, increased resource utilization, and complexity. Instead, Kafka will use a self-managed metadata quorum called KRaft. In KRaft mode, leader selection works by electing a leader through a voting process.