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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