BlakeOrth opened a new pull request, #19366:
URL: https://github.com/apache/datafusion/pull/19366

   
   ## Which issue does this PR close?
   
   - Closes https://github.com/apache/datafusion/issues/18827
   - Closes https://github.com/apache/datafusion/issues/9654
   
   ## Rationale for this change
   
   Now that the `DefaultListFilesCache` can be configured by users it's safe to 
enable it by default and fix the tests that caching broke!
   
   ## What changes are included in this PR?
   
    - Sets the DefaultListFilesCache to be enabled by default
    - Adds additional object store access tests to show list caching behavior
    - Adds variable setting/reading sqllogic test cases
    - Updates tests to disable caching when they relied on COPY commands so 
changes can be detected for each query
    - Updates docs to help users upgrade
   
   
   ## Are these changes tested?
   
   Yes, additional test cases have been added to help show the behavior of the 
caching
   
   ## Are there any user-facing changes?
   
   Yes, this changes the default behavior of DataFusion, however this 
information is already captured in the upgrade guide.
   
   ##
   cc @alamb 
   


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