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https://issues.apache.org/jira/browse/FLINK-30369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yunhong Zheng closed FLINK-30369.
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Resolution: Not A Bug
> Fix FlinkFilterJoinRule push wrong filters to another side while join type is
> left/right outer join
> ---------------------------------------------------------------------------------------------------
>
> Key: FLINK-30369
> URL: https://issues.apache.org/jira/browse/FLINK-30369
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Affects Versions: 1.16.1
> Reporter: Yunhong Zheng
> Priority: Major
> Fix For: 1.17.0
>
>
> Now, if join type is left/right outer join, FlinkFilterJoinRule will push
> wrong filters to another side by extracting filters from join conditions. If
> conditions contain IS_NULL or IS_NOT_NULL filters and join type is left/right
> join, it cannot push this filter to another side.
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