Kafka - Kubernetes and Cloud Deployment
In an Amazon MSK cluster, if you configure a consumer group with auto.offset.reset set to "earliest" and start consuming from a new topic, what will be the first message consumed?
In an Amazon MSK cluster, if you configure a consumer group with auto.offset.reset set to "earliest" and start consuming from a new topic, what will be the first message consumed?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand auto.offset.reset behavior
Setting "earliest" means the consumer starts reading from the oldest available message if no committed offset exists.Step 2: Apply to new topic scenario
Since the topic is new and no offsets exist, the consumer reads from the oldest message.Final Answer:
The oldest message in the topic -> Option BQuick Check:
auto.offset.reset=earliest means read oldest message [OK]
Quick Trick: earliest reads from oldest message if no offset [OK]
Common Mistakes:
MISTAKES- Confusing earliest with latest
- Expecting no messages on new topic
- Assuming error on missing offsets
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