Xinli Shang created PARQUET-2116:
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             Summary: Cell Level Encryption 
                 Key: PARQUET-2116
                 URL: https://issues.apache.org/jira/browse/PARQUET-2116
             Project: Parquet
          Issue Type: Improvement
          Components: parquet-mr
            Reporter: Xinli Shang
            Assignee: Xinli Shang


Cell level encryption can do finer-grained encryption than modular 
encryption(Parquet-1178) or file encryption. The idea is only some fields 
inside the column are encrypted based on a filter expression. For example, a 
table with column a, b, c.x, c.y, d, we can encrypt column a, c.x where d == 5 
and c.y > 0.




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