EugenDueck edited a comment on issue #6209: [broker] add feature BrokerDeduplicationAcrossProducers URL: https://github.com/apache/pulsar/pull/6209#issuecomment-583777122 @codelipenghui Not sure I understand what you don't understand about the _producer group type_, as it would have the same function as with my current solution, with the exception that we don't need an `Exclusive` value. So the _producer group type_ would have one of two possible values: 1. `Parallel`, which is the default mode where multiple producers with the same `producerGroupName` (but different `producerName`s) can be connected to a broker at the same time and produce concurrently 1. 'Failover', which is the mode merlimat suggested above. One question remains, which is how we configure _producer groups_ - will we do it "on the fly" using the `ProducerBuilder`? In that case, what happens if two producers are created with the same `producerGroupName`, but different _producer group types_ or _deduplication_ flags? I would suggest that as long as a producer group is alive, we reject attempts to connect with a different _producer group type_ or _deduplication_ flag. Or were you thinking of adding a new API or configuration for creating and managing producer groups? (This sounds like more complexity)
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