How to reset the offset of messages consumed from Kafka

Question

I have earlier consumed messages from Kafka. Now I want to reset the offset of consumer messages. I am using the following command:

kafka-consumer-groups.bat --bootstrap-server localhost:9092 --group group1 --reset-offsets --to-earliest --all-topics

So, I am getting output as the topic as, the partition number of topics and the new offset as 0.  But when I am executing the below command

kafka-consumer-groups.bat --bootstrap-server localhost:9092 --group group1 --describe

I can still see the old offset number. Anyone can help me in understanding how can I reset the offset?

Answer 1

The reset option only prints the result of the operation, but to perform the operation, you need to add --execute parameter to the command

kafka-consumer-groups.bat --bootstrap-server localhost:9092 --group group1 --reset-offsets --to-earliest --all-topics --execute

Hope this will work

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