I am able to write a single operator as you suggested, thank you. And then I saw ContinuousProcessingTimeTrigger from flink source code, it looks like it's something that I am looking for, if there is a way that I can customize the SQL "TUMBLE" window to use this trigger instead of ProcessingTimeTrigger, then it should solve my problem.
Do you know if there is a way to use a customize trigger in the "TUMBLE" window of SQL? -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/