apache/pulsar

[Bug] about metrics bug

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#21,196 创建于 2023年9月18日

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 (1 评论) (0 反应) (0 负责人)Java (13,697 star) (3,485 fork)batch import
Stalehelp wantedtype/bug

描述

Search before asking

  • I searched in the issues and found nothing similar.

Version

2.8.4 java8 linux

Minimal reproduce step

  1. Create springboot program integrated with pulsar2.8.4
  2. Produce and consume at the same time
  3. Modify the code and restart repeatedly during the consumption process
  4. Check the status of the topic on the pulsar manage page and check the interface response data. It is found that msgInCounter in the response data is less than msgOutCounter in the subscriber.

What did you expect to see?

msgInCounter is equal to or greater than msgOutCounter

What did you see instead?

Check the status of the topic on the pulsar manage page and check the interface response data. It is found that msgInCounter in the response data is less than msgOutCounter in the subscriber.

Anything else?

No response

Are you willing to submit a PR?

  • I'm willing to submit a PR!

贡献者指南

技术栈
java
领域
backendobservability
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
needs maintainer response
清晰度议题是否清楚说明期望改动、验收标准和下一步。
needs investigation
前置要求
JavaPulsar internalsMetrics system
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
15
研究方向
Investigate the computation of msgInCounter and msgOutCounter in Pulsar's topic statistics. Likely files are in the pulsar broker module related to ManagedLedger or PersistentTopic. Examine how counters are updated during produce and consume, and whether they reset on restart. There are no linked PRs or comments from maintainers.