Update sdk/python/feast/batch_feature_view.py

nquinn408 · devin-ai-integration[bot] · web-flow · commit ffe9ee5020ba · 2026-03-07T16:49:50.000-08:00
Co-authored-by: devin-ai-integration[bot] &lt;158243242+devin-ai-integration[bot]@users.noreply.github.com&gt;
diff --git a/sdk/python/feast/batch_feature_view.py b/sdk/python/feast/batch_feature_view.py
@@ -117,6 +117,11 @@ def __init__(
                 f"or CUSTOM_SOURCE, got {type(source).__name__}: {source.name} instead "
             )
 
+        if source is None and aggregations:
+            raise ValueError(
+                "BatchFeatureView with aggregations requires a source to aggregate from."
+            )
+
         if (
             source is None
             and not udf
