[Solved] Which of the following is a benefit of cooperative rebalancing over eager rebalancing? — Ans: It reduces the time consumers are unable to process messages during rebalance. | Kafka

Kafka - Consumer Groups

Which of the following is a benefit of cooperative rebalancing over eager rebalancing?

AIt allows consumers to join groups without any partition assignment.

BIt guarantees exactly-once processing without any configuration.

CIt reduces the time consumers are unable to process messages during rebalance.

DIt eliminates the need for consumer heartbeats.

Step-by-Step Solution

Solution:

Step 1: Identify cooperative rebalancing benefits
Cooperative rebalancing reduces downtime by only reassigning changed partitions, so consumers pause less.
Step 2: Evaluate other options
Exactly-once processing and heartbeat requirements are unrelated to rebalancing style; partition assignment is always needed.
Final Answer:
It reduces the time consumers are unable to process messages during rebalance. -> Option C
Quick Check:
Benefit of cooperative rebalancing = D [OK]

Quick Trick: Cooperative rebalancing minimizes processing pause [OK]

Common Mistakes:

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Which of the following is a benefit of cooperative rebalancing over eager rebalancing?