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Broken subsequence of delayed messages

See original GitHub issue

Describe the bug Delayed messages to shared topic breaks subsequence of messages and delivered earlier than expected.

To Reproduce Steps to reproduce the behavior:

  1. Setup local standalone pulsar
  2. Send messages every 20ms with the same deliverAt timestamp 10000ms and with payload of millisecond when sending was started.
  3. Log received messages payload.

I start receiving all messages after 9 seconds and it I have in log:

(here should be 9001ms)

Expected behavior Two expectations:

  1. Most important I expect first message to be received is message ‘1ms’ and message ‘9001ms’ after ‘8981ms’.
  2. I expect start receiving messages after 10 seconds

Issue is reproduced in 2.8.0 and 2.9.1

Issue Analytics

  • State:open
  • Created 2 years ago
  • Comments:13 (7 by maintainers)

github_iconTop GitHub Comments

mattisonchaocommented, Mar 18, 2022

Hi, @zubchenok

I have already reproduced both problems, I will try to fix them ASAP.

mattisonchaocommented, Jul 19, 2022

Hi, @zubchenok Sorry for missing this issue. The second issue:

I expect start receiving messages after 10 seconds

You can set isDelayedDeliveryDeliverAtTimeStrict=true to solve this problem.(broker version greater than or equals to 2.9.3)#16068 or set delayedDeliveryTickTimeMillis=1(broker version less than or equals to 2.9.3)

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