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From "Kenneth Knowles (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (BEAM-912) Trigger can be more flexible
Date Fri, 04 Nov 2016 18:06:58 GMT

     [ https://issues.apache.org/jira/browse/BEAM-912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kenneth Knowles reassigned BEAM-912:
------------------------------------

    Assignee: Kenneth Knowles  (was: Frances Perry)

> Trigger can be more flexible
> ------------------------------
>
>                 Key: BEAM-912
>                 URL: https://issues.apache.org/jira/browse/BEAM-912
>             Project: Beam
>          Issue Type: New Feature
>          Components: beam-model
>            Reporter: Jingsong Lee
>            Assignee: Kenneth Knowles
>
> 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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