Github user pnowojski commented on the issue: https://github.com/apache/flink/pull/4470 Yes I also didn't like adding this new flag, but didn't have enough motivation to change it. I have done some refactoring extracting those dynamically set in `prepare` method to some `Config` class. However it helps only a little bit. Those tests would need a more comprehensive refactor in the future. I particularly don't like that this `prepare` method exists, it should all be configured in the constructor and all of those should be final fields.
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