[AURON #2427] Report fallback reason for unsupported Iceberg scan data types#2428
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weimingdiit wants to merge 1 commit into
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[AURON #2427] Report fallback reason for unsupported Iceberg scan data types#2428weimingdiit wants to merge 1 commit into
weimingdiit wants to merge 1 commit into
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…an data types Signed-off-by: weimingdiit <weimingdiit@gmail.com>
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Which issue does this PR close?
Closes #2427
Rationale for this change
Auron Iceberg native scan can fall back when the Iceberg scan schema contains data types that are not supported by native scan conversion.
Before this change, unsupported metadata columns already had a clear fallback reason, but unsupported data columns did not. This made it harder to diagnose why an Iceberg scan stayed on Spark execution.
What changes are included in this PR?
Adds an Iceberg fallback reason for unsupported scan schema data types.
Reports unsupported field names and Spark SQL types in the never-convert reason.
Extends the existing unsupported decimal Iceberg scan test to check the fallback reason.
Are there any user-facing changes?
No API changes. Users may see a clearer fallback reason when an Iceberg native scan is skipped because of unsupported data types.
How was this patch tested?
UT.
Was this patch authored or co-authored using generative AI tooling?