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https://issues.apache.org/jira/browse/SPARK-31255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17235123#comment-17235123
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Apache Spark commented on SPARK-31255:
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User 'rdblue' has created a pull request for this issue:
https://github.com/apache/spark/pull/30415
> DataSourceV2: Add metadata columns
> ----------------------------------
>
> Key: SPARK-31255
> URL: https://issues.apache.org/jira/browse/SPARK-31255
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Ryan Blue
> Assignee: Ryan Blue
> Priority: Major
> Fix For: 3.1.0
>
>
> DSv2 should support reading additional metadata columns that are not in a
> table's schema. This allows users to project metadata like Kafka's offset,
> timestamp, and partition. It also allows other sources to expose metadata
> like file and row position.
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