rdblue commented on PR #4710:
URL: https://github.com/apache/iceberg/pull/4710#issuecomment-1121800112

   @jzhuge, what does it mean for two schemas to be equal?
   
   We didn't implement this originally because it isn't clear what the right 
answer is. If two schemas are structurally equal but have different identity 
columns, are they equal? Not implementing equals avoids the problem. Is there 
some reason why you need `equals` and `hashCode` that makes it a good time to 
solve this problem?


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