Github user cjolif commented on the issue: https://github.com/apache/flink/pull/3034 @aljoscha We regularly empty the window because we can get lengthy windows with a lot of elements, so it is good get rid of elements we already managed. But then if we have no more elements and the window event time is triggered it does fire the window function. When we will get some spare cycle we are going to give a try to it as you seem to have fix that according to the JIRA issue?
---