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https://issues.apache.org/jira/browse/SPARK-42683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-42683:
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Assignee: (was: Apache Spark)
> Automatically rename metadata columns that conflict with data schema columns
> ----------------------------------------------------------------------------
>
> Key: SPARK-42683
> URL: https://issues.apache.org/jira/browse/SPARK-42683
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.3.2, 3.4.0
> Reporter: Ryan Johnson
> Priority: Major
>
> Today, if a datasource already has a column called `_metadata`, queries
> cannot access the file-source metadata column that normally carries that
> name. We can address this conflict with two changes to metadata column
> handling:
> # Automatically rename any metadata column whose name conflicts with a data
> schema column
> # Add a facility to reliably find metadata columns by their original/logical
> name, even if they were renamed.
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