[jira] [Created] (REEF-66) Service to query the Driver state

["Markus Weimer (JIRA)" <ji...@apache.org>]

Markus Weimer created REEF-66:
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             Summary: Service to query the Driver state
                 Key: REEF-66
                 URL: https://issues.apache.org/jira/browse/REEF-66
             Project: REEF
          Issue Type: New Feature
            Reporter: Markus Weimer
            Priority: Minor


Currently, we have an interface to listen to Driver events (AllocatedEvaluator, etc.). Service can use this interface to construct the Driver state and reef-webserver uses this feature to export the status of an application. If a user wants to access the status of the application, she can use the web interface that reef-webserver exposes.

But when we want to develop a new Service that needs to access the Driver state, we have to register the same events to construct the Driver state by listening to the events as reef-webserver did. It would be handy to have a query interface that returns the immutable state of the Driver. One could have a meta-service for this.

This used to be [#852|https://github.com/Microsoft-CISL/REEF/issues/852]




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