When an application is shutting down, calling application:which_applications() causes a deadlock as it waits for a response from the already-busy application_controller process. This is preventing my project from shutting down gracefully due to our metrics scraper requesting metrics while the service is shutting down. The easiest way to check if mnesia is running without using the application_controller is to call mnesia:system_info(is_running).
I was trying to write a test for this but was having difficulty simulating a "dummy application" in eunit. I'm open to suggestions on this if a test is strictly required.
deadtrickster
commented
2 years ago
When an application is shutting down, calling
application:which_applications()causes a deadlock as it waits for a response from the already-busyapplication_controllerprocess. This is preventing my project from shutting down gracefully due to our metrics scraper requesting metrics while the service is shutting down. The easiest way to check if mnesia is running without using theapplication_controlleris to callmnesia:system_info(is_running).I was trying to write a test for this but was having difficulty simulating a "dummy application" in eunit. I'm open to suggestions on this if a test is strictly required.