Implements projection pushdown for nested row.

[loserwang1024]

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Fluss version

0.8.0 (latest release)

Please describe the bug 🐞

Currently FlinkTableSource#supportsNestedProjection is false, that means fluss still not support projection pushdown for nested row.(Can read the whole nested row, but not one field of nested row).

In #2310, we add field_id for nested row, this can be used for projection pushdown.

Solution

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[loserwang1024]

@linguoxuan I still work on adding field_id to nested row. Only after that, this can be pushed forward.

[linguoxuan]

@linguoxuan I still work on adding field_id to nested row. Only after that, this can be pushed forward.

Thanks for the update! Good luck with the implementation.