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https://issues.apache.org/jira/browse/BEAM-912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949440#comment-15949440
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Daniel Halperin commented on BEAM-912:
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[~kenn] – should we update this bug to point to your blog post and/or actually
add a code sample / test / something of that sort in Beam codebase?
> Range join in Beam
> ------------------
>
> Key: BEAM-912
> URL: https://issues.apache.org/jira/browse/BEAM-912
> Project: Beam
> Issue Type: New Feature
> Components: sdk-ideas
> Reporter: Jingsong Lee
> Attachments: betweenJoin.png
>
>
> 1.We can support some data-driven trigger, so we need expose data in
> OnElementContext of onElement method.
> 2.We can support more flexible join, so we need expose buffer tag in
> TriggerContext, now this buffer tag is in SystemReduceFn.
> for example: SELECT STREAM * FROM Orders AS o JOIN Shipments AS s
> ON o.orderId = s.orderId AND s.rowtime BETWEEN o.rowtime AND o.rowtime +
> INTERVAL '1' HOUR;
> link: https://issues.apache.org/jira/browse/BEAM-101
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