[jira] [Created] (FLINK-4457) Make the ExecutionGraph independent of Akka

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-4457:
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             Summary: Make the ExecutionGraph independent of Akka
                 Key: FLINK-4457
                 URL: https://issues.apache.org/jira/browse/FLINK-4457
             Project: Flink
          Issue Type: Improvement
          Components: Distributed Coordination
            Reporter: Till Rohrmann


Currently, the {{ExecutionGraph}} strongly depends on Akka as it requires an {{ActorSystem}} to create the {{CheckpointCoordinatorDeActivator}}. Furthermore, it allows {{ActorGateways}} to register for job status and execution updates.

In order to improve modularization and abstraction I propose to introduce proper listener interfaces. This would also allow to get rid of the {{CheckpointCoordinatorDeActivator}} by simply implementing this interface. Furthermore it will pave the way for the upcoming Flip-6 refactoring as it offers a better abstraction.



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