huaxingao commented on code in PR #13166: URL: https://github.com/apache/iceberg/pull/13166#discussion_r2118341124
########## spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/functions/HoursFunction.java: ########## @@ -57,7 +60,19 @@ public String name() { return "hours"; } - public static class TimestampToHoursFunction extends BaseScalarFunction<Integer> { + public abstract static class BaseToHourFunction extends BaseScalarFunction<Integer> + implements ReducibleFunction<Integer, Integer> { + @Override + public Reducer<Integer, Integer> reducer(ReducibleFunction<?, ?> otherBucketFunction) { + + if (otherBucketFunction instanceof DaysFunction.BaseToDaysFunction) { + return new HourToDaysReducer(); + } Review Comment: Nit: add a blank line in between? We normally include an empty line after control structures for readability. -- 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