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https://issues.apache.org/jira/browse/SPARK-35803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-35803:
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Assignee: Apache Spark
> Spark SQL does not support creating views using DataSource v2 based data
> sources
> --------------------------------------------------------------------------------
>
> Key: SPARK-35803
> URL: https://issues.apache.org/jira/browse/SPARK-35803
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.8, 3.1.2
> Reporter: David Rabinowitz
> Assignee: Apache Spark
> Priority: Major
>
> When a temporary view is created in Spark SQL using an external data source,
> Spark then tries to create the relevant relation using
> DataSource.resolveRelation() method. Unlike DataFrameReader.load(),
> resolveRelation() does not check if the provided DataSource implements the
> DataSourceV2 interface and instead tries to use the RelationProvider trait in
> order to generate the Relation.
> Furthermore, DataSourceV2Relation is not a subclass of BaseRelation, so it
> cannot be used in resolveRelation().
> Last, I tried to implement the RelationProvider trait in my Java
> implementation of DataSourceV2, but the match inside resolveRelation() did
> not detect it as RelationProvider.
>
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