efredine opened a new pull request, #11295:
URL: https://github.com/apache/datafusion/pull/11295

   ## Which issue does this PR close?
   
   Closes #11280.
   
   ## Rationale for this change
   
   When all rows for a data page are null the min and max statistics should be 
present but null. Some of the data page statistics iterators were incorrectly 
omitting statistics rather than setting them to null. This results in an array 
whose length is different from the number of data pages. 
   
   ## What changes are included in this PR?
   
   Adds test for data page statistics for all data types when all rows in a 
data page are null. Fixes data page statistics iterators that fail these tests. 
   
   ## Are these changes tested?
   
   Yes.
   
   ## Are there any user-facing changes?
   No.
   


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