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https://issues.apache.org/jira/browse/SPARK-52159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk reassigned SPARK-52159:
--------------------------------
Assignee: Milan Stefanovic
> [JDBC] Improve error handling in table exists check
> ---------------------------------------------------
>
> Key: SPARK-52159
> URL: https://issues.apache.org/jira/browse/SPARK-52159
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 4.1.0
> Reporter: Milan Stefanovic
> Assignee: Milan Stefanovic
> Priority: Major
> Labels: pull-request-available
>
> Currently JDBCTableCatalog table existence check is converting any exception
> thrown by dialect into `false`, and rethrowing as specific table not found
> exception.
>
> This results in analysis failure saying `TABLE_OR_VIEW_NOT_FOUND`. This can
> be misleading as table existence check can fail for different reasons - for
> example connection failures.
>
> `TABLE_OR_VIEW_NOT_FOUND` should be thrown only when table really does not
> exists on remote system.
>
> Proposal is to extend JDBCDialect to process exception from table existence
> check, and rethrow only if exception matches table not found exception on
> remote system.
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