How to detect unstable tests and provide the valuable information for owners?

[wuhuizuo]

The biggest issue make the CI failure is the flaky and slow tests. But how to extract overall information and individual test information to the development team management has become extremely important.

Also there are many tasks need to be done by engineering efficiency team to help the development team effectively governance:

• Setup a mirror unit test CI job to run the tests and continuously eliminate the top 10 unstable tests to assess the benefits of improvements. #2848