gaborkaszab opened a new pull request, #15445:
URL: https://github.com/apache/iceberg/pull/15445
Content:
- Column update table metadata
- API to write column update metadata
- Changes to read and write column update metadata to manifest entries
- Bunch of TODOs :)
Details:
- No overlap in field IDs across column updates. Overlapping field IDs
removed from older column updates when committing a new one
- Column updates covers entire data files (no partial column updates)
- Follow the approach from [the
proposal](https://docs.google.com/document/d/1Bd7JVzgajA8-DozzeEE24mID_GLuz6iwj0g4TlcVJcs/edit?usp=sharing)
where manifests are cloned with same content but new column update metadata
- Other approach (delete manifest + new manifest file) depends on V4, not
covered now
- Integrated into V3 metadata with made up field IDs. Will have to adjust
for V4 once available
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