codelipenghui commented on issue #6157: Failing to cumulative acknowledge messages as old as 15 seconds URL: https://github.com/apache/pulsar/issues/6157#issuecomment-582235048 @youurayy I have run your above example code before, but all stats looks right. The msgBacklog between 15 to 30(I have check the stats and internal-stats many times). This corresponds to your sample code. From your code: 1. For every 15 messages, the first message is acked. 2. Until next 15 ack happens, need more 15 messages. So the backlog is between 15 to 30 right? If you ack the last message every 15 messages, the backlog would be 0 to 15(I also test this scenario).
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