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https://issues.apache.org/jira/browse/PARQUET-951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15968122#comment-15968122
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Qinghui Xu commented on PARQUET-951:
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Hello, I'm currently working on this and will make a pull request soon.
Yes, I am aware of existence of this field id in the SchemaElement, but it
seems not used when writing. And I already brought this up in the parquet sync
on 12/04/2017.
> Missing field id support in parquet metadata
> --------------------------------------------
>
> Key: PARQUET-951
> URL: https://issues.apache.org/jira/browse/PARQUET-951
> Project: Parquet
> Issue Type: Bug
> Reporter: Qinghui Xu
>
> Field id is essential for some serialization framework such as protobuf, and
> they are used to keep schema forward/backward compatibility which could not
> be achieved by using field names. Currently field id is not persisted as file
> metadata.
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