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feat: show reranker info in hybrid search explain plan (#3006)

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Closes #3000

The hybrid search `explain_plan` now shows the reranker as the top-level
node with
the vector and FTS sub-plans indented underneath, instead of just
listing them
separately with no reranker context.

**Before:**
```
Vector Search Plan:
ProjectionExec: ...
FTS Search Plan:
ProjectionExec: ...
```

**After:**
```
RRFReranker(K=60)
  Vector Search Plan:
  ProjectionExec: ...
  FTS Search Plan:
  ProjectionExec: ...
```

Other rerankers display similarly ; e.g.
`LinearCombinationReranker(weight=0.7, fill=1.0)`,
`MRRReranker(weight_vector=0.5, weight_fts=0.5)`,
`CohereReranker(model_name=name)`.

---------

Signed-off-by: dask-58 <googldhruv@gmail.com>
Co-authored-by: Will Jones <willjones127@gmail.com>
This commit is contained in:
Dhruv
2026-02-11 01:15:39 +05:30
committed by GitHub
parent bd3dd6a8e5
commit 4323ca0147
12 changed files with 67 additions and 36 deletions
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2
python/python/tests/test_hybrid_query.py
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@@ -163,9 +163,7 @@ async def test_explain_plan(table: AsyncTable):
table.query().nearest_to_text("dog").nearest_to([0.1, 0.1]).explain_plan(True)
)
assert "Vector Search Plan" in plan
assert "KNNVectorDistance" in plan
assert "FTS Search Plan" in plan
assert "LanceRead" in plan