Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3501#discussion_r105407208
--- Diff:
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/DataStreamTest.java
---
@@ -906,6 +919,256 @@ public void testChannelSelectors() {
}
/////////////////////////////////////////////////////////////
+ // KeyBy testing
+ /////////////////////////////////////////////////////////////
+
+ @Rule
+ public ExpectedException expectedException = ExpectedException.none();
--- End diff --
The thing is that if I remember correctly we discussed about how to check
for exceptions earlier this year. And if I remember correctly the outcome was
sth along the lines of using JUnit facilities. Feel free to correct me on this
one.
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