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https://issues.apache.org/jira/browse/PARQUET-278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546178#comment-14546178
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Tianshuo Deng edited comment on PARQUET-278 at 5/15/15 9:11 PM:
----------------------------------------------------------------

We could actually change the fluentAPI to be more clear about showing the 
nested structure. like:


message("myMessage").with(
  group("firstGroup").with(
     primitive("age").type("INT").optional()
  )
)

Instead of building an API that chains everything together, I prefer an DSL 
that actually look s more like the real structured schema


was (Author: tianshuo):
We may actually change the fluentAPI to be more clear about showing the nested 
structure. like:


message("myMessage").with(
  group("firstGroup").with(
     primitive("age").type("INT").optional()
  )
)

Instead of building an API that chains everything together, I prefer an DSL 
that actually look s more like the real structured schema

> 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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