The Google documentation states that "Google App Scripts have a 6 minute runtime limit".
I've confirmed this limit by running a sleep function which waits for 355 seconds and then returns a value in a browser.
However, running the same function for 355 seconds using a Google App Script API call doesn't result in a value being returned. The Stackdriver logs confirm the function continues to its completion and attempts to return a value but this doesn't make it back through the API. On the client side this causes the calling program, e.g. Postman to just timeout eventually.
The API calls do return a value if the function completes in under 4 minutes, e.g. the same sleep function works if it's run for 220 seconds.
Questions:
1) Does anyone know if the Google App Script API has been configured by Google to only utilise 66% of the timeout window available?
2) Does anyone know if the Google App Script API has any documented SLAs that would include these times?
3) Has anyone achieved a synchronous call to the Google App Script API that returned a value after 4 minutes?
