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https://issues.apache.org/jira/browse/SPARK-41791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-41791:
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Assignee: (was: Apache Spark)
> Create distinct metadata attributes for metadata that is constant or file and
> metadata that is generated during the scan
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-41791
> URL: https://issues.apache.org/jira/browse/SPARK-41791
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer
> Affects Versions: 3.3.1
> Reporter: Jan-Ole Sasse
> Priority: Major
> Fix For: 3.4.0
>
>
> There are two types or Metadata in Spark
> * Metadata that is constant per file (file_name, file_size, ...)
> * Metadata that is not contant (currently only row_index)
> The two types are generated differently
> * File constant metadata is appended to the output after scan
> * non-constant metadata is generated during the scan
> The proposal here is to create different metadata attributes to distinguish
> those different types throughout the code
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