no fallback to brute force for now

2 files changed, 3 insertions, 5 deletions

diff --git a/searchlib/src/tests/attribute/tensorattribute/tensorattribute_test.cpp b/searchlib/src/tests/attribute/tensorattribute/tensorattribute_test.cpp
index ac14233f32d..74e67fb7fcd 100644
--- a/searchlib/src/tests/attribute/tensorattribute/tensorattribute_test.cpp
+++ b/searchlib/src/tests/attribute/tensorattribute/tensorattribute_test.cpp
@@ -847,8 +847,8 @@ TEST_F("NN blueprint handles strong filter", NearestNeighborBlueprintFixture)
     filter->invalidateCachedCount();
     auto strong_filter = GlobalFilter::create(std::move(filter));
     bp->set_global_filter(*strong_filter);
-    EXPECT_EQUAL(11u, bp->getState().estimate().estHits);
-    EXPECT_FALSE(bp->may_approximate());
+    EXPECT_EQUAL(1u, bp->getState().estimate().estHits);
+    EXPECT_TRUE(bp->may_approximate());
 }
 
 TEST_F("NN blueprint handles weak filter", NearestNeighborBlueprintFixture)
diff --git a/searchlib/src/vespa/searchlib/queryeval/nearest_neighbor_blueprint.cpp b/searchlib/src/vespa/searchlib/queryeval/nearest_neighbor_blueprint.cpp
index 5e46d24a98d..55342f91e93 100644
--- a/searchlib/src/vespa/searchlib/queryeval/nearest_neighbor_blueprint.cpp
+++ b/searchlib/src/vespa/searchlib/queryeval/nearest_neighbor_blueprint.cpp
@@ -97,9 +97,7 @@ NearestNeighborBlueprint::set_global_filter(const GlobalFilter &global_filter)
             uint32_t max_hits = _global_filter->filter()->countTrueBits();
             LOG(debug, "set_global_filter getNumDocs: %u / max_hits %u", est_hits, max_hits);
             if (max_hits * 10 < est_hits) {
-                // too many hits filtered out, use brute force implementation:
-                _approximate = false;
-                return;
+                LOG(debug, "too many hits filtered out, consider using brute force implementation");
             }
             est_hits = std::min(est_hits, max_hits);
         }