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https://issues.apache.org/jira/browse/FLINK-9855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16547713#comment-16547713
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Timo Walther commented on FLINK-9855:
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[~till.rohrmann] I extended the documentation of these methods with examples to
make it easier for implementers in FLINK-7251.
> Check all calls to the TypeExtractor.getBinaryOperatorReturnType()
> ------------------------------------------------------------------
>
> Key: FLINK-9855
> URL: https://issues.apache.org/jira/browse/FLINK-9855
> Project: Flink
> Issue Type: Bug
> Components: DataStream API
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Blocker
> Fix For: 1.6.0
>
>
> KeyedStream.IntervalJoined is not calling type extraction functions
> correctly. It should have an index.
> Other examples with potentially wrong usage are:
> - process(final BroadcastProcessFunction<IN1, IN2, OUT> function) and
> - flatMap(CoFlatMapFunction<IN1, IN2, R> coFlatMapper
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