tustvold commented on PR #196:
URL: https://github.com/apache/parquet-format/pull/196#issuecomment-1803642293

   Just coming back to this as it has come up a bit downstream, the approach 
described in 
https://github.com/apache/parquet-format/pull/196#issuecomment-1625537697 makes 
a lot of sense to me. Would it help move this forward if I were to raise a 
separate PR proposing it?
   
   > parquet-mr can efficiently implement this sort order
   
   Provided Java provides some mechanism to interpret a float as an integer, it 
is just a case of some bit operations - 
https://doc.rust-lang.org/src/core/num/f64.rs.html#1336
   
   > Total ordering is nice if the goal is to order the data
   > If the goal is to filter the data then I think any consideration of 
NaN/null/infinity is meaningless
   
   Why would filter predicates not also need a well-defined order? FWIW 
arrow-rs uses total order for **all** floating point comparison.


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