I have a Play Java application on Heroku and sometimes the only dyno it has goes to sleep and doesn't wake up when I access the app. Instead, I get an "Application error" and the logs say ...at=error code=H14 desc="No web processes running.... In the Dashboard the app appears as sleeping.
As far as I know an app should wake up when you access it, even if it takes longer. I should also mention that I moved the app recently from US to Europe region and I only have this problem since then.
EDIT
Below is the detailed log:
Apr 08 23:17:49 myapp heroku/web.1: Idling
Apr 08 23:17:49 myapp heroku/web.1: State changed from up to down
Apr 08 23:17:53 myapp heroku/web.1: Stopping all processes with SIGTERM
Apr 08 23:17:54 myapp app/web.1: [info] play - Shutdown application default Akka system.
Apr 08 23:17:54 myapp app/web.1: [info] application - 201 jobs cancelled
Apr 08 23:18:01 myapp heroku/web.1: Process exited with status 143
Apr 09 01:42:20 myapp heroku/router: at=error code=H14 desc="No web processes running" method=GET path="/" host=myapp.herokuapp.com request_id=92f438fd-d943-4585-9bc6-e04bb72a5077 fwd="86.124.196.157" dyno= connect= service= status=503 bytes=
As you can see, the dyno goes normally to sleep, but it doesn't wake up when I try to access the app.
