increase function calculate duplicate result, but metrics seems not duplicate

[Erictsu1947]

Bug Report

Hi, I use mysqld_exporter to collect mysql status.

It works well, but sometimes i find some original metrics seems not to be duplicate.
When I try some aggregate functions, such as increase/rate, the result i get seems
calculate duplicate metric.

I got some metrics original as below

and i got some metrics with increase function as below

here the result with rate function

Environment

• System information:

  Linux 4.4.0-144-generic x86_64

• Prometheus version:

  2.7.1

[brian-brazil]

I don't see anything wrong or unusual here.

It makes more sense to ask questions like this on the prometheus-users mailing list rather than in a GitHub issue. On the mailing list, more people are available to potentially respond to your question, and the whole community can benefit from the answers provided.