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https://issues.apache.org/jira/browse/BEAM-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004146#comment-16004146
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ASF GitHub Bot commented on BEAM-2006:
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GitHub user XuMingmin opened a pull request:
https://github.com/apache/beam/pull/3039
[BEAM-2006] window support
Add support for aggregation: _global_, _HOP_, _TUMBLE_, _SESSION_, only
aggregation function `COUNT`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/XuMingmin/beam BEAM-2006-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/3039.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3039
----
----
> window support
> ---------------
>
> Key: BEAM-2006
> URL: https://issues.apache.org/jira/browse/BEAM-2006
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: Xu Mingmin
> Assignee: Xu Mingmin
> Priority: Blocker
>
> There're several methods, TUMBLE/HOP/SESSION, introduced in Calcite 1.12,
> which represent a window-aggregation operation.
> In BeamSQL, it's expected to leverage these methods to determine window
> function, set trigger strategy, also handle event_time/watermark properly.
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