Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/3150#discussion_r96810332 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/dataset/DataSetWindowAggregate.scala --- @@ -128,10 +128,8 @@ class DataSetWindowAggregate( inputDS, isTimeInterval(size.resultType), caseSensitive) - - case EventTimeSessionGroupWindow(_, _, _) => - throw new UnsupportedOperationException( - "Event-time session windows in a batch environment are currently not supported") + case EventTimeSessionGroupWindow(_, _, gap) => + createEventTimeSessionWindowDataSet(inputDS,caseSensitive) --- End diff -- add space: `(inputDS, caseSensitive)`
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