zhengruifeng commented on PR #53113:
URL: https://github.com/apache/spark/pull/53113#issuecomment-3550217068
I was trying to cache the converters `{datetype: converter}` and then found
that UDT cannot be used as the key.
> I think the general direction should be making __eq__ strict.
@gaogaotiantian sounds good, another solution is to just remove the __eq__
method in UDT, then it should use DataType.__eq__
https://github.com/apache/spark/blob/9380e91f8bbdc5b7d6855815ea352070d1e248fb/python/pyspark/sql/types.py#L115-L125
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