wgtmac opened a new pull request, #3191:
URL: https://github.com/apache/parquet-java/pull/3191

   ### Rationale for this change
   
   PoC implementation for the spec change: 
https://github.com/apache/parquet-format/pull/221
   
   ### What changes are included in this PR?
   
   - Added a new ColumnOrder for IEEE 754 total order.
   - Added comparators for Float, Double and Float16.
   
   ### Are these changes tested?
   
   - Added test cases for comparators.
   - Added test cases for metadata converter.
   
   ### Are there any user-facing changes?
   
   Yes, users can now set the new column order but by default it is not used.
   
   Closes #406
   


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