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https://issues.apache.org/jira/browse/FLINK-20668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he reassigned FLINK-20668:
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Assignee: godfrey he
> Introduce translateToExecNode method for FlinkPhysicalRel
> ---------------------------------------------------------
>
> Key: FLINK-20668
> URL: https://issues.apache.org/jira/browse/FLINK-20668
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: godfrey he
> Assignee: godfrey he
> Priority: Major
>
> Currently, we introduce ExecGraphGenerator to translate a graph of
> FlinkPhysicalRel to a ExecNode graph. While as more and more ExecNode
> supported, ExecGraphGenerator is hard to maintain. So we introduce
> FlinkPhysicalRel#translateToExecNode to create specific ExecNode in each
> physical RelNode, and ExecGraphGenerator is used to build the whole graph
> based on the translated ExecNode, including connecting the input/output
> nodes, handling the rel visitor, handle some special nodes (such as,
> Exchange), etc.
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