k2la opened a new issue #6168: Unacked messages are not redelivered on time on C++ URL: https://github.com/apache/pulsar/issues/6168 #### Expected behavior Unacked messages are redelivered after about unAckedMessagesTimeout. #### Actual behavior As the following log, unacked messages are redelivered after about 2 * unAckedMessagesTimeout. ``` my-message-0: Wed Jan 29 13:52:39 2020 2020-01-29 13:52:59.210 INFO UnAckedMessageTrackerEnabled:47 | [persistent://k2la/test/topic0, sub1, 0] : 1 Messages were not acked within 10000 time my-message-0: Wed Jan 29 13:52:59 2020 2020-01-29 13:53:19.214 INFO UnAckedMessageTrackerEnabled:47 | [persistent://k2la/test/topic0, sub1, 0] : 1 Messages were not acked within 10000 time my-message-0: Wed Jan 29 13:53:19 2020 ``` #### Steps to reproduce On C++ lib: 1. Set `unAckedMessagesTimeout`. 2. Receive messages and not ack them. #### System configuration **Pulsar version**: 2.5.0 **Client OS**: MacOS 10.15.2 **Boost version**: 1.72.0 **Python version**: 2.7.16
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