lyy-pineapple opened a new issue, #9528: URL: https://github.com/apache/incubator-gluten/issues/9528
### Backend VL (Velox) ### Bug description When an Iceberg table column is dropped and then re-added with the same name, Iceberg assigns a new unique column ID to the re-added column. Iceberg relies on column IDs (not names) for mapping data files to schema definitions. As a result, historical data files written before the column was re-added do not contain data for the new column ID, and Iceberg correctly interprets it as null. However, Gluten currently resolves columns by name, ignoring the column ID. This causes it to incorrectly read data from old columns with the same name but different IDs, leading to incorrect or misleading query results. ### Gluten version _No response_ ### Spark version None ### Spark configurations _No response_ ### System information _No response_ ### Relevant logs ```bash ``` -- 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]
