[jira] [Commented] (FLINK-10409) Collection data sink does not propagate exceptions

["Dawid Wysakowicz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-10409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625719#comment-16625719 ] 

Dawid Wysakowicz commented on FLINK-10409:
------------------------------------------

This issue is quite important, cause some tests were migrated ([FLINK-2032]) to use this class, but because of this behavior we might get some false positive tests.

> Collection data sink does not propagate exceptions
> --------------------------------------------------
>
>                 Key: FLINK-10409
>                 URL: https://issues.apache.org/jira/browse/FLINK-10409
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>            Reporter: Dawid Wysakowicz
>            Priority: Major
>
> I would assume that this test should fail with {{RuntimeException}}, but it actually runs just fine.
> {code}
> @Test
> public void testA() throws Exception {
> 	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
> 	List<String> resultList = new ArrayList<>();
> 	SingleOutputStreamOperator<String> result = env.fromElements("A").map(obj -> {
> 		throw new RuntimeException();
> 	});
> 	DataStreamUtils.collect(result).forEachRemaining(resultList::add);
> }
> {code}



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