[jira] [Created] (FLINK-4456) Replace ActorGateway in RuntimeEnvironment by interface

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-4456:
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             Summary: Replace ActorGateway in RuntimeEnvironment by interface
                 Key: FLINK-4456
                 URL: https://issues.apache.org/jira/browse/FLINK-4456
             Project: Flink
          Issue Type: Improvement
          Components: TaskManager
            Reporter: Till Rohrmann


The {{RuntimeEnvironment}} communicates with the outside world ({{JobManager}}) via {{ActorGateways}}. This bakes in the dependency on actors.
In terms of modularization and an improved abstraction (especially wrt Flip-6) I propose to replace the {{ActorGateways}} by interfaces which exposes the required methods. The current implementation would then simply wrap the method calls in messages and send them via the {{ActorGateway}} to the recipient.

In Flip-6 the {{JobMaster}} could simply implement these interfaces as part of their RPC contract.



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