OIiveirra opened a new pull request, #67207:
URL: https://github.com/apache/doris/pull/67207
### What problem does this PR solve?
Issue Number: close #66816
Related PR: None
Problem Summary: FileScannerV2 native Parquet/ORC scans did not expose
stable file-location metadata for Iceberg and Paimon. This change adds Iceberg
`_file`/`_pos` and Paimon `__paimon_file_path`/`__paimon_row_index`, preserves
original source paths, and rejects unsupported JNI or V1 reader paths.
### Release note
Expose file path and physical row position metadata columns for supported
native Iceberg and Paimon scans.
### Check List (For Author)
- Test: Unit Test / Manual test / Regression test pending
- Targeted Iceberg and Paimon connector unit tests passed.
- Private Iceberg cluster manual validation passed.
- External Docker regression will be run through `run buildall` and a
retained CI environment.
- Behavior changed: Yes (supported native external scans expose
file-location metadata columns)
- Does this need documentation: No
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