When you are using a window function the docs:
https://ci.apache.org/projects/flink/flink-docs-master/apis/streaming/windows.html#windowfunction---the-generic-case state that A WindowFunction gets an Iterable containing all the elements of the window being processed If the input data stream is timestamped using event times where the events can come in out of chronological order, are the events returned by the interator the same order as they were added? Or does the window sort them internally on timestamp and return them through the iterator in timestamp chronological order? Paul
