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Currently, there are 2 approaches to use the Kafka java client correctly, that is, in a way that does not cause record duplication during normal operation. (Duplicates are still possible due to failures.)

Approach 1 - process all records immediately (synchronous)

This approach is useful when all processing can happen between the calls to poll.

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In the new approach, when a revoke is requested in one poll, the revoke will be completed in the next poll.

When the call to a poll invocation completes and a partition revoke is requested, the user has a choice:

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