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https://issues.apache.org/jira/browse/FLINK-11084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712942#comment-16712942
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Aljoscha Krettek commented on FLINK-11084:
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Agreed! Thanks for the explanation. We should fix this.
> Incorrect ouput after two consecutive split and select
> ------------------------------------------------------
>
> Key: FLINK-11084
> URL: https://issues.apache.org/jira/browse/FLINK-11084
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Shimin Yang
> Assignee: Shimin Yang
> Priority: Critical
> Fix For: 1.5.6, 1.6.3, 1.8.0, 1.7.1
>
>
> The second OutputSelector of two successive split and select are actually not
> rely on the first one. They are in the same array of OutputSelector in
> DirectedOutput.
> For example.
> outputSelector1 => \{“name1” or ”name2“}
> outputSelector2 => \{”name3“ or “name4”}
> resultStream =
> dataStream.split(outputSelector1).select("name2").split(outputSelector2).select("name3")
> expectedResult for input \{StreamRecord1}:
> outputSelector1 => \{”name1“}
> outputSelector2 => \{”name3“}
> resultStream => {}
> actualResult:
> resultStream => \{StreamRecord1}
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