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https://issues.apache.org/jira/browse/FLINK-19822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he updated FLINK-19822:
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Summary: Remove redundant shuffle for streaming (was: Remove redundant
shuffle for stream)
> Remove redundant shuffle for streaming
> --------------------------------------
>
> Key: FLINK-19822
> URL: https://issues.apache.org/jira/browse/FLINK-19822
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: godfrey he
> Assignee: godfrey he
> Priority: Major
> Fix For: 1.12.0
>
>
> This is similar
> [FLINK-12575|https://issues.apache.org/jira/browse/FLINK-12575], we could
> implement {{satisfyTraits}} method for stream nodes to remove redundant
> shuffle. This could add more possibilities that more operators can be merged
> into multiple input operator.
> Note: This feature should only be enabled only when multiple input operator
> is enabled because currently key selector is applied only at the header of
> the chain, the state access of other operators in the chain may be not
> correct.
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