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Posted to issues@flink.apache.org by "lincoln lee (Jira)" <ji...@apache.org> on 2022/07/07 02:00:00 UTC

[jira] [Created] (FLINK-28434) Extend "NestedProjectionUtil" to unify support for projection pushdown for physical fields or metadata only

lincoln lee created FLINK-28434:
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             Summary: Extend "NestedProjectionUtil" to unify support for projection pushdown for physical fields or metadata only
                 Key: FLINK-28434
                 URL: https://issues.apache.org/jira/browse/FLINK-28434
             Project: Flink
          Issue Type: Improvement
            Reporter: lincoln lee


Extend `NestedProjectionUtil` to unify support for projection pushdown for physical fields or metadata only. 

Currently, the `NestedProjectionUtil` relies on rewritten of the input row type, this not works on the case that a table source only [SupportsReadingMetadata|https://github.com/apache/flink/pull/20118#] and not [SupportsProjectionPushDown (which was fixed by |https://github.com/apache/flink/pull/20118#] [FLINK-28334|https://github.com/apache/flink/pull/20118#] [)|https://github.com/apache/flink/pull/20118#]

Some refactor work is needed.



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