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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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Flink Jira Bot updated FLINK-19822:
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Labels: auto-deprioritized-major auto-unassigned pull-request-available
(was: auto-unassigned pull-request-available stale-major)
Priority: Minor (was: Major)
This issue was labeled "stale-major" 7 days ago and has not received any
updates so it is being deprioritized. If this ticket is actually Major, please
raise the priority and ask a committer to assign you the issue or revive the
public discussion.
> Remove redundant shuffle for streaming
> --------------------------------------
>
> Key: FLINK-19822
> URL: https://issues.apache.org/jira/browse/FLINK-19822
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Reporter: godfrey he
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned,
> pull-request-available
>
> 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.
> Different batch, stream operators require the shuffle keys and the state keys
> must be exactly the same, otherwise the state may be not correct.
> We only support a few operators in this issue, such as Join and regular
> Aggregate. Other operators will be supported in the future.
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