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https://issues.apache.org/jira/browse/FLINK-5320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15744706#comment-15744706
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Aljoscha Krettek commented on FLINK-5320:
-----------------------------------------
It should be
{code}
TypeInformation<R> resultType =
TypeExtractor.getUnaryOperatorReturnType(
function, WindowFunction.class, true, true,
foldAccumulatorType, null, false);
{code}
right? Weirdly enough it's done correctly in {{AllWindowedStream}}.
[~ymarzougui] will you open a PR for a fix or should I do it? We should also
have a test for this.
> Fix result TypeInformation in WindowedStream.fold(ACC, FoldFunction,
> WindowFunction)
> ------------------------------------------------------------------------------------
>
> Key: FLINK-5320
> URL: https://issues.apache.org/jira/browse/FLINK-5320
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.2.0
> Reporter: Yassine Marzougui
> Assignee: Yassine Marzougui
> Priority: Blocker
>
> The WindowedStream.fold(ACC, FoldFunction, WindowFunction) does not correctly
> infer the resultType.
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