Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/1913#issuecomment-218821172
There are some subtle consequences of the fact that the `ExecutionConfig`
must not be modified after it has been passed to the `JobGraph` (because it has
been serialized). I think this overall helps to make the code clearer but it
requires some more code changes.
I'll remove the ExecutionConfig from the JobGraph constructor. We pass `new
ExecutionConfig()` there anyways. Instead, a custom ExecutionConfig will be set
via a `setExecutionConfig(..)` method.
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