jscheffl commented on PR #54034:
URL: https://github.com/apache/airflow/pull/54034#issuecomment-3148564630

   Coming along here after being a bit off from PC: I think only valid JSON is 
of any use in providers. I am not sure if an empty string is used in the 
providers... which would be against the idea of the extras.
   
   To come around the problem of "legacy data" where potentially empty strings 
are used... I'd propose to ignore just empty strings and either convert them to 
`{}` or `None` implicitly. Then we can keep the validation and maybe just allow 
an empty string for historic reasons, post a warning and ignore the content. 
Support of this could be dropped in Airflow 4.


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