How does The process of Assigning partitions to broker Work?kafka Interview Questions for Experienced/kafka Interview Questions and Answers for Freshers & Experienced

How does The process of Assigning partitions to broker Work?

When a consumer wants to join a group, it sends a JoinGroup request to the group coordinator. The first consumer to join the group becomes the group leader. The leader receives a list of all consumers in the group from the group coordinator and is responsible for assigning a subset of partitions to each consumer. It uses an implementation of PartitionAssignor to decide which partitions should be handled by which consumer.

After deciding on the partition assignment, the consumer group leader sends the list of assignments to the Group Coordinator, which sends this information to all the consumers. Each consumer only sees his own assignment—the leader is the only client process that has the full list of consumers in the group and their assignments. This process repeats every time a rebalance happens.

Posted Date:- 2021-11-12 13:53:56

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