[GitHub] [rocketmq-exporter] caorong opened a new issue #91: cached metric cause bug.

[GitBox <gi...@apache.org>]

caorong opened a new issue #91:
URL: https://github.com/apache/rocketmq-exporter/issues/91


   **Describe the bug**
   A clear and concise description of what the bug is.
   
   in latest version, topicOffset, topicRetryOffset, topicDLQOffset are wrapped with guava cache with expire
   
   but this 3 metric contains lastUpdateTimestamp in tags
   
   so in grafana，it is overlap in the cache expire time，which will cause ConsumerFallingBehind rule bug,  rule mistake。
   
   ![Xnip2022-01-27_15-12-04](https://user-images.githubusercontent.com/3087340/151309565-1785e718-141a-47c3-95ad-99d6a7f1914d.jpg)
   
   lastUpdateTimestamp is used in which scene？  can it be delete？
   
   **To Reproduce**
   Steps to reproduce the behavior:
   1. Go to '...'
   2. Click on '....'
   3. Scroll down to '....'
   4. See error
   
   **Expected behavior**
   A clear and concise description of what you expected to happen.
   
   **Screenshots**
   If applicable, add screenshots to help explain your problem.
   
   **Desktop (please complete the following information):**
    - OS: [e.g. iOS]
    - Browser [e.g. chrome, safari]
    - Version [e.g. 22]
   
   **Smartphone (please complete the following information):**
    - Device: [e.g. iPhone6]
    - OS: [e.g. iOS8.1]
    - Browser [e.g. stock browser, safari]
    - Version [e.g. 22]
   
   **Additional context**
   Add any other context about the problem here.
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: dev-unsubscribe@rocketmq.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org