AHeise commented on a change in pull request #9717: [FLINK-14044] [runtime] 
Reducing synchronization in AsyncWaitOperator
URL: https://github.com/apache/flink/pull/9717#discussion_r329922400
 
 

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 File path: 
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/operators/async/AsyncWaitOperatorTest.java
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 @@ -100,6 +102,9 @@
 public class AsyncWaitOperatorTest extends TestLogger {
        private static final long TIMEOUT = 1000L;
 
+       @Rule
+       public Timeout timeoutRule = new Timeout(10, TimeUnit.SECONDS);
 
 Review comment:
   These timeouts are just a safe-guard whenever we break stuff. All tests 
should always complete without timeout. But it will be especially useful on 
Travis as we do not need to wait for Travis to timeout to get a test result.
   
   Instead of just annotating the two tests that just failed (as we did in the 
past), I'd annotate the whole suite with the junit rule, which makes it more 
readable. Imho @1u0 even started with that rule and I just copied him ;).

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