Hi, Thanks for reporting this BUG. It seems to be a duplicate with FLINK-23919 [1] which would be solved in 1.13.4.
[1] https://issues.apache.org/jira/browse/FLINK-23919 Best, Jing Zhang Ivan Budanaev <ivan.budan...@gmail.com> 于2021年11月28日周日 下午7:18写道: > I am getting the *Field names must be unique. Found duplicates* error > when aggregating over the descriptor columns in HOP windowing function. > A full description of the error can be found here > <https://issues.apache.org/jira/browse/FLINK-25084>. > Is there a way to use the descriptor column in aggregation without > duplicating it? > Thank you. >