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https://issues.apache.org/jira/browse/PARQUET-278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tianshuo Deng resolved PARQUET-278.
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Resolution: Fixed
> 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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