[Solved] Given two consumers in a group using eager rebalancing, what happens when one consumer leaves? — Ans: All partitions in the group are reassigned immediately, causing a pause. | Kafka

Kafka - Consumer Groups

Given two consumers in a group using eager rebalancing, what happens when one consumer leaves?

AAll partitions in the group are reassigned immediately, causing a pause.

BOnly the partitions of the leaving consumer are reassigned gradually.

CThe remaining consumer continues without any rebalancing.

DPartitions are reassigned only after a timeout period.

Step-by-Step Solution

Solution:

Step 1: Understand eager rebalancing behavior on consumer leave
In eager rebalancing, when any consumer leaves, all partitions are reassigned immediately to maintain balance.
Step 2: Recognize the impact on consumer pause
This immediate reassignment causes a pause for all consumers during the rebalance.
Final Answer:
All partitions in the group are reassigned immediately, causing a pause. -> Option A
Quick Check:
Eager rebalancing = full immediate reassignment [OK]

Quick Trick: Eager means all partitions reassign at once [OK]

Common Mistakes:

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