Lanayx commented on issue #4931: Cumulative acknowledgement on batched acknowledgements produce unexpected behavior URL: https://github.com/apache/pulsar/issues/4931#issuecomment-561810922 I want to add a similar behaviour: Let's say we have 10 messages in a batch sent by some producer, also we have MaxRedeliverCount is 1. Consumer acked 9 messages and 1 nacked. **Current behaviour** All 10 messages will be redelivered which will lead to double processing of 9 messages. **Expected behavior** Only 1 message should be redelivered
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