Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/945#issuecomment-125886476
Using `getClass().getPackage().getImplementationVersion()` would be a
decent first approach then, I guess. The critical part seems to be the
Client-to-JobManager communication.
How about the following as a first step: The client sends its version
together with the `SubmitJob` message (just add a field there). The JobManager
would check the version and respond with a failure, if it does not match. You
can probably make the JobManager part very simple, no need to add extra
constructor parameters, etc.
That way, the change would be minimally invasive, and we could see how well
it addresses the issues, and whether we should extend this to other messages as
well.
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