codelipenghui commented on issue #6157: Failing to cumulative acknowledge messages as old as 15 seconds URL: https://github.com/apache/pulsar/issues/6157#issuecomment-581725080 @youurayy Sorry, Maybe I haven't get your point. The ack period is control by users, every 10 messages or 20 messages, and consumer enabled group acknowledge by default(default is 100 mills). If want a smaller ack period, decrease the group acknowledge interval and increase cumulative acknowledge frequency.
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