[jira] [Created] (ORC-1058) Add metadata num_nulls

[melin (Jira)]

melin created ORC-1058:
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             Summary: Add metadata num_nulls
                 Key: ORC-1058
                 URL: https://issues.apache.org/jira/browse/ORC-1058
             Project: ORC
          Issue Type: Improvement
            Reporter: melin


parquet store the amount of null data for each column, which can be read 
directly during data quality analysis, avoiding calculation of statistics



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