gsandeep1241 opened a new pull request, #18404: URL: https://github.com/apache/iceberg/pull/18404
Type promotion lets a field evolve, for example from DECIMAL(8. 0) to DECIMAL(25. 0)without rewriting data files. Existing Parquet files keep storing the column as int32 with DECIMAL(8. 0) and readers must read them as DECIMAL(25, 0). The spec addresses reading narrower types in the context of schema evolution. However, schema evolution can potentially leave no markers in the metadata and so readers must be prepared to read narrower types than the type specified in the schema. (Discussion open on mail thread) -- 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]
