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https://issues.apache.org/jira/browse/BEAM-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16380809#comment-16380809
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Kenneth Knowles commented on BEAM-3749:
---------------------------------------
Hmm, the first bit seems like a bug. You should be able to set just the
triggering.
For the second thing - if you just say `Window.into(FixedWindows.of(...))` and
do not say triggering, it will use whatever the upstream trigger was (aka leave
it alone).
> support customized trigger/accumulationMode in BeamSql
> ------------------------------------------------------
>
> Key: BEAM-3749
> URL: https://issues.apache.org/jira/browse/BEAM-3749
> Project: Beam
> Issue Type: Improvement
> Components: dsl-sql
> Reporter: Xu Mingmin
> Assignee: Xu Mingmin
> Priority: Major
> Fix For: 2.4.0
>
>
> Currently BeamSql use {{DefaultTrigger}} for aggregation operations.
> By adding two options {{withTrigger(Trigger)}} and
> {{withAccumulationMode(AccumulationMode)}}, developers can specify their own
> aggregation strategies with BeamSql.
> [~xumingming] [~kedin] [~kenn] for any comments.
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