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https://issues.apache.org/jira/browse/SPARK-27448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gengliang Wang updated SPARK-27448:
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Issue Type: Sub-task (was: Task)
Parent: SPARK-27589
> 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: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
> Fix For: 3.0.0
>
>
> 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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