Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/1513#discussion_r52185124
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/KeyedStream.java
---
@@ -163,7 +166,11 @@ public KeyedStream(DataStream<T> dataStream,
KeySelector<T, KEY> keySelector, Ty
* @param size The size of the window.
*/
public WindowedStream<T, KEY, TimeWindow> timeWindow(AbstractTime size)
{
- return window(TumblingTimeWindows.of(size));
+ if (environment.getStreamTimeCharacteristic() ==
TimeCharacteristic.PROCESSING_TIME) {
--- End diff --
I'm not sure how the rest of the DataStream API is behaving, but I though
that it doesn't matter when the environment settings (for example parallelism)
are set.
In this case, users have to set the `TimeCharacteristic` before using
operators.
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