Xinli Shang created PARQUET-2062:
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             Summary: Data masking(null) for column encryption 
                 Key: PARQUET-2062
                 URL: https://issues.apache.org/jira/browse/PARQUET-2062
             Project: Parquet
          Issue Type: New Feature
          Components: parquet-mr
            Reporter: Xinli Shang
            Assignee: Xinli Shang


When user doesn't have permisson on a column that are encrypted by the column 
encryption feature (parquet-1178), returning a masked value could avoid an 
exception and let the call succeed. 

We would like to introduce the data masking with null values. The idea is when 
the user gets key access denied and the user can accept null(via a reading 
option flag), we would return null for the encrypted columns. This solution 
doesn't need to save extra columns for masked value and doesn't need to 
translate existing data. 



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