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https://issues.apache.org/jira/browse/FLINK-15841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17028867#comment-17028867
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Aljoscha Krettek commented on FLINK-15841:
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Did you try and do the change and check if all the tests still pass. If the
behaviour of {{intersect()}} has been wrong for so long now, maybe some code
relies on this quirk.
> TimeWindow.intersects return true for consecutive windows
> ---------------------------------------------------------
>
> Key: FLINK-15841
> URL: https://issues.apache.org/jira/browse/FLINK-15841
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Reporter: Jörn Kottmann
> Priority: Trivial
>
> The TimeWindow JavaDoc explains that the start index is inclusive and the end
> index is exclusive, therefore two windows T0 to T1 and T1 to T2 are next to
> each other without overlapping.
> To fix this the intersects comparison should be changed to: {{this.start <
> other.end && this.end > other.start}}
> Also a test should be added to verify the methods works correctly.
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