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Posted to issues@flink.apache.org by "Jingsong Lee (Jira)" <ji...@apache.org> on 2021/07/27 02:33:00 UTC
[jira] [Updated] (FLINK-22714) Simplify
`StreamPhysicalWindowTableFunction` to a simple window assigner if
successor node with `WindowAttachedWindowingStrategy` in planner
[ https://issues.apache.org/jira/browse/FLINK-22714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jingsong Lee updated FLINK-22714:
---------------------------------
Fix Version/s: 1.14.0
> Simplify `StreamPhysicalWindowTableFunction` to a simple window assigner if successor node with `WindowAttachedWindowingStrategy` in planner
> ---------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-22714
> URL: https://issues.apache.org/jira/browse/FLINK-22714
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Affects Versions: 1.14.0
> Reporter: JING ZHANG
> Assignee: JING ZHANG
> Priority: Major
> Labels: pull-request-available, stale-assigned
> Fix For: 1.14.0
>
>
> In theory, `StreamPhysicalWindowTableFunction` should works as a window assigner and emits at ends of window. However, `StreamPhysicalWindowTableFunction` could be simplified to a simple window assigner, and emits per record if it's successor node is one of `WindowRank`/`WindowJoin`/`WindowAggregate` with `WindowAttachedWindowingStrategy`, because those nodes would assign input records to windows have been assigned in input nodes, and trigger emit at ends of window.
> Besides, we should add a limit that window is based on rowtime, because it has syntax problem if window is assigned based on the proc-time of previous operator.
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