feat(table): add history metadata table#1465
Merged
Merged
Conversation
Add an inspect subsystem (Table.Inspect) and its first metadata table, History, mirroring the Java, PyIceberg, and Rust clients (apache/iceberg-rust#2825). History exposes the snapshot log as an Arrow RecordReader with columns made_current_at (timestamp[us,UTC]), snapshot_id, parent_id, and is_current_ancestor (field IDs 1-4 for cross-client parity). Ancestry is computed by walking the current snapshot's parent chain via the existing AncestorsOf helper (cycle-guarded); rolled-back snapshots are flagged non-ancestors and expired snapshots render a null parent_id. The context is honored during iteration and errors are wrapped.
laskoviymishka
marked this pull request as ready for review
July 14, 2026 13:01
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Add an inspect subsystem (Table.Inspect) and its first metadata table, History, mirroring the Java, PyIceberg, and Rust clients.
History exposes the snapshot log as an Arrow RecordReader with columns made_current_at (timestamp[us,UTC]), snapshot_id, parent_id, and is_current_ancestor (field IDs 1-4 for cross-client parity). Ancestry is computed by walking the current snapshot's parent chain via the existing AncestorsOf helper (cycle-guarded); rolled-back snapshots are flagged non-ancestors and expired snapshots render a null parent_id. The context is honored during iteration and errors are wrapped.