The problem

The current implementation of processElement

1. Check if cache existence for input
2. If the cache returns value return it
3. otherwise, aquire a semaphore
4. call asyncLookup and pass it input. It return a future: F
5. Maintain a list of the currently executing futures
6. release a semaphore at the end each future execution
7. make sure all the future are com

Is your feature request related to a problem? Please describe.

Updating escalator config currently requires a pod restart. We should update escalator to automatically read new config upon changing on disk.

Describe the solution you'd like

Check for changes in nodegroup config before each run. If safe to do so, run with the new config.

*Describe alternatives you've considered