[jira] [Created] (FLINK-4312) Remove Serializabiliy of ExecutionGraph

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-4312:
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             Summary: Remove Serializabiliy of ExecutionGraph
                 Key: FLINK-4312
                 URL: https://issues.apache.org/jira/browse/FLINK-4312
             Project: Flink
          Issue Type: Sub-task
          Components: JobManager
    Affects Versions: 1.1.0
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
            Priority: Minor
             Fix For: 1.2.0


As a preparatory task for reworking the {{ExecutionGraph}} for finer grained recovery, I would clean up the serializability:

  - As long as a job is running, the ExecutionGraph cannot be serializable
  - Once it is completed, the ExecutionGraph is sent to a local archive actor. This does not require that the graph is serializable.

  - In the future, archived execution data should be served from a static dump of the execution data anyways, not from an archived graph. That allows us to move the web monitor server to a separate trusted process (gateway / dispatcher) that will never be in touch with user code.



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