hit-lacus edited a comment on pull request #1485:
URL: https://github.com/apache/kylin/pull/1485#issuecomment-738777923


   ## Cuboid size need to be rewrote
   
   Source Data | Path         | Size 
   --                   | --             | --
   part_dt=2020-10-11 | /Lacus/data/UserActionStream/part_dt=2020-10-11 |  72.8 
MB
   part_dt=2020-10-12 | /Lacus/data/UserActioStream/part_dt=2020-10-12 |  72.8 
MB
   part_dt=2020-10-13 | /Lacus/data/UserActionStream/part_dt=2020-10-13 | 439.2 
M
   
   
   Name | Value
   -- | --
   Source Data                       |  145 MB
   Segment Data                    |  221.45 MB
   Real Expansion Rate         | 152 %
   Expected Expansion Rate | 1500 %
   
   
   Real expansion rate is far different from expected expansion rate .
   
   I should pay attention to `CubeStatsReader#getCuboidSizeMapFromRowCount` .  
Cuboid size estimation should re-invent ?
   


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