Github user pnowojski commented on a diff in the pull request: https://github.com/apache/flink/pull/5481#discussion_r169571436 --- Diff: flink-streaming-scala/src/test/scala/org/apache/flink/streaming/api/scala/DataStreamTest.scala --- @@ -448,11 +447,35 @@ class DataStreamTest extends AbstractTestBase { val flatMapped = src.keyBy(x => x).process(processFunction) assert(processFunction == getFunctionForDataStream(flatMapped)) + assert(getOperatorForDataStream(flatMapped).isInstanceOf[LegacyKeyedProcessOperator[_, _, _]]) + } + + /** + * Verify that a [[KeyedStream.process(KeyedProcessFunction)]] call is correctly --- End diff -- ditto
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