A developer sets the same consumer group ID for two different applications consuming the same topic. What issue might arise?

medium📝 Debug Q6 of 15

Kafka - Consumer Groups

AThe two applications will share partitions, causing unexpected message distribution.

BBoth applications will receive all messages independently.

CKafka will throw a configuration error and stop processing.

DMessages will be duplicated in the topic.

Step-by-Step Solution

Solution:

Step 1: Understand group ID effect
Same group ID means consumers belong to the same group and share partitions.
Step 2: Identify consequence for different apps
Different apps sharing group ID will split partitions, causing unexpected message distribution.
Final Answer:
The two applications will share partitions, causing unexpected message distribution. -> Option A
Quick Check:
Same group ID causes partition sharing = B [OK]

Quick Trick: Same group ID merges consumers into one group [OK]

Common Mistakes:

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