Github user EronWright commented on the issue:
https://github.com/apache/flink/pull/3356
@tillrohrmann the `dynamicProperties` static field is unfortunate, yes.
To eliminate it, we must evaluate the use of the zero-arg
`GlobalConfiguration.loadConfiguration()` that is used in many places
(`FileInputFormat`, `HadoopUtils`). The field ensures that all those sites
see the same configuration.
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