[jira] [Created] (FLINK-6435) AsyncWaitOperator does not handle exceptions properly

["Till Rohrmann (JIRA)" <ji...@apache.org>]

Till Rohrmann created FLINK-6435:
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             Summary: AsyncWaitOperator does not handle exceptions properly
                 Key: FLINK-6435
                 URL: https://issues.apache.org/jira/browse/FLINK-6435
             Project: Flink
          Issue Type: Bug
          Components: Distributed Coordination
    Affects Versions: 1.3.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann


A user reported that the {{AsyncWaitOperator}} does not handle exceptions properly. The following code snipped does not make the job fail.

{code}
public void test() throws Exception {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    DataStream<Integer> withTimestamps = env.fromCollection(Arrays.asList(1,2,3,4,5));

    AsyncDataStream.unorderedWait(withTimestamps, 
        (AsyncFunction<Integer, String>) (input, collector) -> {
            if (input == 3){
                collector.collect(new RuntimeException("Test"));
                return;
            }
            collector.collect(Collections.singleton("Ok"));
        }, 10, TimeUnit.MILLISECONDS)
        .returns(String.class)
        .print();

    env.execute("unit-test");
}
{code}



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