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https://issues.apache.org/jira/browse/FLINK-23748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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JING ZHANG updated FLINK-23748:
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Description:
Window TVF would support SESSION window in the following case:
# SESSION Window TVF followed by Window Aggregate, in this case SESSION window
TVF would be pulled up into WindowAggregate, so Window assigner would happen in
WindowAggrgeate
*Note, SESSION window TVF only works in limited cases currently, the following
user cases is not supported yet:*
# *SESSION WINDOW TVF followed by Window JOIN*
# *SESSION WINDOW TVF followed by Window RANK***
*BESIDES, SESSION window Aggregate does not support the following performance
improvement yet:*
1. Split Distinct Aggregation
2. Local-global Aggregation
3. Mini-batch Aggregate
> Testing window TVF session window
> ---------------------------------
>
> Key: FLINK-23748
> URL: https://issues.apache.org/jira/browse/FLINK-23748
> Project: Flink
> Issue Type: Improvement
> Components: Tests
> Reporter: JING ZHANG
> Priority: Blocker
> Labels: release-testing
> Fix For: 1.14.0
>
>
> Window TVF would support SESSION window in the following case:
> # SESSION Window TVF followed by Window Aggregate, in this case SESSION
> window TVF would be pulled up into WindowAggregate, so Window assigner would
> happen in WindowAggrgeate
>
> *Note, SESSION window TVF only works in limited cases currently, the
> following user cases is not supported yet:*
> # *SESSION WINDOW TVF followed by Window JOIN*
> # *SESSION WINDOW TVF followed by Window RANK***
> *BESIDES, SESSION window Aggregate does not support the following performance
> improvement yet:*
> 1. Split Distinct Aggregation
> 2. Local-global Aggregation
> 3. Mini-batch Aggregate
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