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https://issues.apache.org/jira/browse/BEAM-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16381653#comment-16381653
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Xu Mingmin commented on BEAM-3749:
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Sink-based trigger has a limitation that it cannot handle the case when
there're multiple aggregations in the whole pipeline, I suppose we need to have
a way to set in each query.
> 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: 2.5.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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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