Missing field id support in parquet metadata
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- Dominant language
- Java
- Stars
- 3.1k
- Forks
- 1.6k
- Avg merge
- 3d 12h
- Merged PRs (30d)
- 33
Description
Field id is essential for some serialization framework such as protobuf, and they are used to keep schema forward/backward compatibility which could not be achieved by using field names. Currently field id is not persisted as file metadata.
Reporter: Qinghui Xu / @qinghui-xu
PRs and other links:
Note: This issue was originally created as PARQUET-951. Please see the migration documentation for further details.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing Pull Request #410 and the linked migration documentation, then inspect how Parquet file metadata currently represents schema fields. Confirm whether field identifiers are already addressed elsewhere and use the compatibility requirements in the issue to define done; the existing PR indicates this work may already have moved forward.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- data-engineering
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100