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https://issues.apache.org/jira/browse/FLINK-32607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17750281#comment-17750281
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Benchao Li commented on FLINK-32607:
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[~zhoujira86] Feel free to add a subtask for pb.
> Kafka table source and json format support projection pushdown
> --------------------------------------------------------------
>
> Key: FLINK-32607
> URL: https://issues.apache.org/jira/browse/FLINK-32607
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka, Table SQL / Planner
> Affects Versions: 1.18.0
> Reporter: dalongliu
> Priority: Major
> Fix For: 1.18.0
>
>
> ProjectionPushDown has a huge performance impact and is not currently
> implemented in Kafka Source, so we can support it.
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