CODEWITHSUNDEEP
apache-kafka
VKR
VKR

Reputation: 339

Kafka change Offset from Latest to earliest

I have a consumer with 'latest' offset. If I change to earliest, Does my consumer read the messages from starting offset (OR) does it continue from where latest offset left ? no change in consumer group name.

Upvotes: 1

Views: 1875

Answers (1)

OneCricketeer
OneCricketeer

Reputation: 192013

If you've started the consumer already, and it has created a group (committed offsets), then auto.offset.reset value doesn't matter; it'll continue reading from the last committed offset.

If you want to reset the offsets for an existing group, you need to run kafka-consumer-groups --reset-offsets tool, or manually call seek methods on the consumer before it starts polling.

Upvotes: 2

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