Recommended rowgroup size, and number of row groups for large table

[ALeX Wang]

Hi,

I'm using parquet to store a big table (400+ columns), and most of columns
will be none

Is there any recommended rowgroup size and the number of row groups per
parquet file for my use case?  Or is there any reference/paper that I could
read myself,


Thanks,
-- 
Alex Wang,
Open vSwitch developer