[jira] [Created] (PARQUET-278) enforce non empty group on MessageType level

[Tianshuo Deng (JIRA)]

Tianshuo Deng created PARQUET-278:
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             Summary: enforce non empty group on MessageType level
                 Key: PARQUET-278
                 URL: https://issues.apache.org/jira/browse/PARQUET-278
             Project: Parquet
          Issue Type: Improvement
            Reporter: Tianshuo Deng


As columnar format, parquet currently does not support empty struct/group 
without leaves. We should throw when constructing an empty GroupType to give a 
clear message.



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