fix: validate LanceDB vector dimensions before batch writes#2414
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Kevin-Li-2025 wants to merge 1 commit into
Open
fix: validate LanceDB vector dimensions before batch writes#2414Kevin-Li-2025 wants to merge 1 commit into
Kevin-Li-2025 wants to merge 1 commit into
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Summary
Fixes #2265 by validating each LanceDB document vector against the configured
vector_sizebefore constructing the PyArrow fixed-size-list column.When the embedding model returns vectors with a different dimension than the configured LanceDB index, the current code reaches
FixedSizeListArray.from_arrays(...)and fails later with a confusing row-count-style Arrow error such asColumn 1 named vector expected length 44 but got length 11. This change fails earlier with the exact document id, actual vector dimension, index name, and configured vector size.Tests
UV_CACHE_DIR=/private/tmp/uv-cache-graphrag uv run pytest -q tests/integration/vector_stores/test_lancedb.py -k "load_documents"UV_CACHE_DIR=/private/tmp/uv-cache-graphrag uv run pytest -q tests/integration/vector_stores/test_lancedb.pyUV_CACHE_DIR=/private/tmp/uv-cache-graphrag uv run ruff format --check packages/graphrag-vectors/graphrag_vectors/lancedb.py tests/integration/vector_stores/test_lancedb.pyUV_CACHE_DIR=/private/tmp/uv-cache-graphrag uv run ruff check packages/graphrag-vectors/graphrag_vectors/lancedb.py tests/integration/vector_stores/test_lancedb.py