[jira] [Commented] (BEAM-912) Range join in Beam

["Daniel Halperin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949440#comment-15949440 ] 

Daniel Halperin commented on BEAM-912:
--------------------------------------

[~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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