[NEW] Add tests for io-threads.
lipzhu opened this issue · comments
Description of the feature
Currently in project, there is no unit test and integration test for io-threads feature,
- We should add some tests to test the correctness when io-threads enabled, context: #111 (comment).
- Due to enhancement of #111, we also need to add test to scale up/down the io-active-threads.
Additional information