jorisvandenbossche commented on issue #38441:
URL: https://github.com/apache/arrow/issues/38441#issuecomment-1777667545

   At the very least, we should also improve the documention around the 
different encoding options. Currently we just have this table listing them: 
https://arrow.apache.org/docs/dev/cpp/parquet.html#encodings (and this brief 
section in the Python user guide: 
https://arrow.apache.org/docs/dev/python/parquet.html#compression-encoding-and-file-compatibility)
 
   For example mention for which data types they are relevant (eg 
BYTE_STREAM_SPLIT is only for floats, DELTA_BINARY_PACKED for integers), or if 
they are useful for specific characteristcs (eg many repeated values, sorted 
data, ..), etc.
   
   
   


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