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https://issues.apache.org/jira/browse/BEAM-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997519#comment-15997519
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ASF GitHub Bot commented on BEAM-2006:
--------------------------------------
GitHub user XuMingmin opened a pull request:
https://github.com/apache/beam/pull/2903
[BEAM-2006] window support
Add support for aggregation: global, `HOP`, `TUMBLE`, `SESSION`, only
aggregation function `COUNT`
Some other changes:
1. upgrade to Apache Calcite 1.12.0;
2. support data type TIMESTAMP, TIME;
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/XuMingmin/beam BEAM-2006
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/2903.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 #2903
----
commit 7f487cac6ef1991bbfca6f6d00d536d09321056e
Author: mingmxu <[email protected]>
Date: 2017-05-04T21:43:36Z
Add support for aggregation: global, `HOP`, `TUMBLE`, `SESSION`, only
aggregation function `COUNT`
Some other changes:
1. upgrade to Apache Calcite 1.12.0;
2. support data type TIMESTAMP, TIME;
minor fix of `accept` validation.
fix window info in project
----
> 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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