datafusion-contrib / datafusion-contrib/datafusion-distributed

[Iceberg] Support Iceberg metadata tables

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Dominant language
Rust
Stars
139
Forks
67
Avg merge
3d 1h
Merged PRs (30d)
35

Description

Part of #599.

Expose Iceberg metadata tables through SQL, starting with table$snapshots, table$manifests, and table$history.

Upstream implements metadata table providers and scans here:

https://github.com/apache/iceberg-rust/blob/f28ae7dca60904a5f135f3b6eecb03b09032b581/crates/integrations/datafusion/src/table/metadata_table.rs#L37-L83

The catalog/schema integration should resolve the $ table names.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the upstream metadata table implementation in crates/integrations/datafusion/src/table/metadata_table.rs, then trace this repository’s catalog and schema resolution for the $ table names. Verify that SQL can resolve table$snapshots, table$manifests, and table$history and expose their metadata scans.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust, sql
Domain
databases, distributed-systems
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
52/100

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