Github user pnowojski commented on a diff in the pull request:
https://github.com/apache/flink/pull/5481#discussion_r169573342
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/DataStream.java
---
@@ -654,6 +648,63 @@ public ExecutionConfig getExecutionConfig() {
return transform("Process", outputType, operator);
}
+ /**
+ * Applies the given {@link KeyedProcessFunction} on the input stream,
thereby creating a transformed output stream.
+ *
+ * <p>The function will be called for every element in the input
streams and can produce zero
+ * or more output elements.
+ *
+ * @param keyedProcessFunction The {@link ProcessFunction} that is
called for each element in the stream.
+ *
+ * @param <K> The type of key in {@code KeyedProcessFunction}.
+ *
+ * @param <R> The type of elements emitted by the {@code
KeyedProcessFunction}.
+ *
+ * @return The transformed {@link DataStream}.
+ */
+ @PublicEvolving
+ public <K, R> SingleOutputStreamOperator<R>
process(KeyedProcessFunction<K, T, R> keyedProcessFunction) {
--- End diff --
Does it make sense to add `process` with a `KeyedProcessFunction` on non
keyed `DataStream`?
---
