Fix Fields::filter_leaves for ListView and LargeListView (#11657)
Sole Author: Patrick Ribbsaeter (@patrickswedish) · Immutable Commit SHA: a8306d68e57527a6b929a15cf046bd8550e995ea
Core columnar Arrow schema traversal fix extending Fields::filter_leaves recursion to descend into ListView and LargeListView container types during nested leaf projection.
PR #11657
Merged Mainline
a8306d6
Immutable Git SHA
Rust
Systems
48/48 CI Green
CI & Test Matrix
01 · Engineering problem
The failure mode
Fields::filter_leaves in arrow-schema omitted recursive traversal arms for DataType::ListView and DataType::LargeListView, causing leaf projection indices to desynchronize on nested ListView schemas.
02 · Technical response
What changed
- 01Extended Fields::filter_leaves recursive traversal in arrow-schema to descend into ListView and LargeListView child fields.
- 02Added unit regression coverage verifying leaf projection parity across List, LargeList, ListView, and LargeListView.
03 · Verified outcome
Evidence-backed result
- ✓Restored nested schema leaf filtering parity for Arrow ListView and LargeListView types.
- ✓Passed 39/39 CI checks and merged upstream into apache/arrow-rs as commit a8306d68e57527a6b929a15cf046bd8550e995ea.
04 · Cryptographic Git record
Immutable source evidence
Independent open-source engineering authored solely by Patrick Ribbsaeter (@patrickswedish). Company and project names identify the public repository context only under nominative fair use. No employment, client, vendor, or partnership relationship is implied unless explicitly stated.