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  1. Spark
  2. SPARK-22386 Data Source V2 improvements
  3. SPARK-23398

DataSourceV2 should provide a way to get a source's schema.

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    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.3.0
    • None
    • SQL
    • None

    Description

      To validate writes with DataSourceV2, the planner needs to get a source's schema. The current API has no direct way to get that schema. SPARK-23321 instantiates a reader to get the schema, but sources are not required to implement ReadSupport or ReadSupportWithSchema. V2 should either add a method to get the schema of a source, or require sources implement ReadSupport.

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          is superceded by

          Sub-task - The sub-task of the issue SPARK-25528 data source V2 API refactoring (batch read)

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              rdblue Ryan Blue
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