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https://issues.apache.org/jira/browse/PARQUET-1798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved PARQUET-1798.
-------------------------------------
Resolution: Fixed
Issue resolved by pull request 10289
[https://github.com/apache/arrow/pull/10289]
> [C++] Review logic around automatic assignment of field_id's
> ------------------------------------------------------------
>
> Key: PARQUET-1798
> URL: https://issues.apache.org/jira/browse/PARQUET-1798
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-cpp
> Reporter: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: cpp-4.0.0
>
> Time Spent: 5h
> Remaining Estimate: 0h
>
> At schema deserialization (from Thrift) time, we are assigning a default
> field_id to the Schema node based on a depth-first ordering of notes. This
> means that a round trip (load, then write) will cause field_id's to be
> written that weren't there before. I'm not sure this is the desired behavior.
> We should examine this in more detail and possible change it. See also
> discussion in ARROW-7080 https://github.com/apache/arrow/pull/6408
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