Asthenia0412 opened a new pull request, #67968: URL: https://github.com/apache/doris/pull/67968
### What problem does this PR solve? Issue Number: close #67365 Problem Summary: When JDBC metadata cannot be resolved, PluginDrivenExternalTable.initSchema() silently returned an empty Optional (missing connector table handle) or a present empty schema (valid handle, zero columns). Downstream, that empty Optional surfaces either as a null getFullSchema()/getBaseSchema() (NullPointerException in LogicalCatalogRelation) or as a context-free cache failure, and it is never cached, so a stale table-name entry re-hits the remote on every query. This change makes initSchema() fail loud with an actionable DorisConnectorException carrying the catalog and remote database.table so analysis fails deterministically with the real cause, and a zero-column (non-view) schema is rejected as a metadata resolution problem instead of being served as a normal empty schema. ### Release note None ### Check List (For Author) - Test: Unit Test (PluginDrivenExternalTableTest) - added - Behavior changed: No - Does this need documentation: No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
