[FLINK-4312] Remove Serializabiliy of ExecutionGraph

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 1.2.0
• Component/s: Runtime / Coordination
• Assignee: Stephan Ewen
• Reporter: Stephan Ewen
• Created: 04/Aug/16 14:48
• Updated: 28/Feb/19 14:02
• Resolved: 05/Aug/16 18:00

Description

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.