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https://issues.apache.org/jira/browse/FLINK-11790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16782291#comment-16782291
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Kurt Young commented on FLINK-11790:
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fixed in e3248d844c728c714857c5d69520f08ddf4e4c85
> Introduce basic Flink RelNode interface
> ---------------------------------------
>
> Key: FLINK-11790
> URL: https://issues.apache.org/jira/browse/FLINK-11790
> Project: Flink
> Issue Type: New Feature
> Components: API / Table SQL
> Reporter: godfrey he
> Assignee: godfrey he
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Flink RelNode inheritance structure can be defined as follow:
> {code}
> RelNode (Calcite)
> |__ FlinkRelNode // base class for flink relnode
> |__ FlinkLogicalRel // base class for flink logical relnode
> |__ FlinkPhysicalRel // base class for flink physical relnode
> |__ BatchPhysicalRel // base class for batch physical relnode
> |__ StreamPhysicalRel // base class for stream physical relnode
> {code}
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