cshuo commented on PR #20512:
URL: https://github.com/apache/hudi/pull/20512#issuecomment-6675476092

   `NOT(age = 23)` is the original predicate expression in the test; it does 
not mean that pruning uses only the minimum value. The file has `min = 23` and 
`max = 33`, and the expected result is to retain it because it may contain 
values other than 23.
   
   The current fix conservatively retains candidates for unrewritten `NOT` 
expressions. When Flink rewrites this predicate to `age <> 23`, Hudi evaluates 
it using both min and max.
   


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