You run kafka-consumer-groups.sh --describe --group mygroup but get an error saying group not found. What is a likely cause?

medium📝 Troubleshoot Q6 of Q15

Kafka - Monitoring and Operations

You run kafka-consumer-groups.sh --describe --group mygroup but get an error saying group not found. What is a likely cause?

AThe command syntax is incorrect

BThe Kafka broker is down

CThe topic does not exist

DThe consumer group has no committed offsets yet

Step-by-Step Solution

Solution:

Step 1: Understand group not found error
If a consumer group has never committed offsets, it may not appear in the group list or describe output.
Step 2: Check other options
Broker down causes connection errors, topic absence causes different errors, syntax error would show usage message.
Final Answer:
The consumer group has no committed offsets yet -> Option D
Quick Check:
Group not found = no committed offsets [OK]

Quick Trick: Group appears only after committing offsets [OK]

Common Mistakes:

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