Hi, you can write your own trigger and window, and implement whatever logic there. There are some examples https://github.com/apache/flink/blob/1875cac03042dad4a4c47b0de8364f02fbe457c6/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/windowing/triggers/
If you don't see any event, it means window is not triggered. It would mean Watermark is not increasing. The issue can be the timestamp is not extracted correctly. Or, if you miss the trigger if use the window function doesn't have it. Cheers, Sendoh -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
