codelipenghui commented on issue #6209: [broker] add feature BrokerDeduplicationAcrossProducers URL: https://github.com/apache/pulsar/pull/6209#issuecomment-583688654 @EugenDueck I personally think that there are some disadvantages in using producer name to distinguish producers and producer groups. For users, if producers in a single group name are grouped producers, is this harder to understand than the grouped producer is a producer with the same name and producer type `Parallel`? I do not think so. If a producer has a producer name, the workflow more like following steps: 1. Group some producers into a group(with same producer group name), but producer name is different 2. The client specifies the deduplication based on producer name or group name. 3. Broker side, if use producer name, this is the same as now. If we use the producer group name, we just need to use the `groupName/producerName` as the deduplication key. Of course, it needs to be turned on deduplication first at the broker side. I don't know if this will cause other problems?
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