RussellSpitzer opened a new pull request, #8731: URL: https://github.com/apache/iceberg/pull/8731
When unionByName is now called with schema update we first check to see whether or not all the elements in the struct are in the same order (while ignoring if additional columns have been added.) If they are, then we place new columns in their correct places rather than at the end of the schema. This is a new behavior but helpful for those folks who have an evolving schema coming from other sources and would like it to look exactly the same in Iceberg. For example ``` //Old Behavior <A, B> + <A, C, B> => <A, B, C> // New Behavior <A, B> + <A, C, B> => <A, C, B> ``` This change will not effect any structs in which the original fields are missing or misordered ``` // Same behavior <A, B> + <B, A, C> => < A, B, C> <A, B> + <C> => <A, B, C> <A, B> + <C, B> => <A, B, C> ``` -- 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: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
