pan3793 commented on PR #54467:
URL: https://github.com/apache/spark/pull/54467#issuecomment-3959983254

   > some systems set this field as a marker to tell something to readers
   
   @sarutak I'm not sure it's a good idea, we generally use table/serde 
properties to store custom info. Was it already used in any famous project? 
Either ASF project or commercial project.
   
   But meanwhile, I also don't see a reason to disallow that. I'm neutral on 
this change.


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