merlimat commented on issue #5278: Fixed reader cursor seek with disconnection URL: https://github.com/apache/pulsar/pull/5278#issuecomment-548230834 > If disconnect all consumers while reset cursor, client will create new consumers, that's not going to happen It can still happen, and actually it's more probable to happen the longer the ack is delayed from the receival of the message. Even if the consumer session is recreated, a consumer can receive a message, then seek it's triggered and then it will call ack-cumulative returning the cursor to the previous position. An application that seeks while acking (either individual or cumulative) is bound to unpredictable behavior in any case, irrespective of the disconnection.
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