Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/3386#discussion_r108352888 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/datastream/DataStreamOverAggregate.scala --- @@ -112,7 +113,12 @@ class DataStreamOverAggregate( "condition.") } case _: RowTimeType => - throw new TableException("OVER Window of the EventTime type is not currently supported.") + if (overWindow.lowerBound.isUnbounded && overWindow.upperBound.isCurrentRow) { + createUnboundedAndCurrentRowEventTimeOverWindow(inputDS) --- End diff -- Updated JIRA [FLINK-5658](https://issues.apache.org/jira/browse/FLINK-5658). @sunjincheng121, not sure if that was an issue with your permissions. It is not possible to modify a closed issue. You need to reopen it first.
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