[jira] [Created] (SPARK-27448) File source V2 table provider should be compatible with V1 provider

["Gengliang Wang (JIRA)" <ji...@apache.org>]

Gengliang Wang created SPARK-27448:
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             Summary: File source V2 table provider should be compatible with V1 provider
                 Key: SPARK-27448
                 URL: https://issues.apache.org/jira/browse/SPARK-27448
             Project: Spark
          Issue Type: Task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Gengliang Wang


In the rule `PreprocessTableCreation`, if an existing table is appended with a different provider, the action will fail.
Currently, there are two implementations for file sources and creating a table with file source V2 will always fall back to V1 FileFormat. We should consider the following cases as valid:
1. Appending a table with file source V2 provider using the v1 file format
2. Appending a table with v1 file format provider using file source V2 format  





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