dawidwys commented on issue #11181: [FLINK-16230][tests]Use LinkedHashSet instead of HashSet URL: https://github.com/apache/flink/pull/11181#issuecomment-591442453 Hi @cpugputpu. I agree with @StephanEwen that we should rather adjust the `DeeplyEqualsChecker`. I wonder though if it would make more sense to actually remove the branches for `Iterable` and `Row`. It might have been a mistake to add those very specific cases into the general equality checker. I think it was unnecessary to unify that deep equality check for all `Iterables` cause as far as I can tell we do not test serializing lists of arrays. I tried removing those and run the tests and all the tests seem to pass. I think we should rather assume that objects have properly implemented `equals` methods. If they do not, a more complex equality check can happen in that particular test. Therefore I think it still make sense to have the generic way of ingesting the `equalityChecker`, but we should not unify too many checkers.
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