the very first documents added to HNSW index should use single-phase indexing

2 files changed, 2 insertions, 2 deletions

diff --git a/searchlib/src/tests/tensor/hnsw_index/hnsw_index_test.cpp b/searchlib/src/tests/tensor/hnsw_index/hnsw_index_test.cpp
index 7dc0efc106d..cd989c03b4e 100644
--- a/searchlib/src/tests/tensor/hnsw_index/hnsw_index_test.cpp
+++ b/searchlib/src/tests/tensor/hnsw_index/hnsw_index_test.cpp
@@ -82,7 +82,7 @@ public:
         level_generator = generator.get();
         index = std::make_unique<HnswIndex>(vectors, std::make_unique<FloatSqEuclideanDistance>(),
                                             std::move(generator),
-                                            HnswIndex::Config(5, 2, 10, heuristic_select_neighbors));
+                                            HnswIndex::Config(5, 2, 10, 0, heuristic_select_neighbors));
     }
     void add_document(uint32_t docid, uint32_t max_level = 0) {
         level_generator->level = max_level;
diff --git a/searchlib/src/tests/tensor/hnsw_index/stress_hnsw_mt.cpp b/searchlib/src/tests/tensor/hnsw_index/stress_hnsw_mt.cpp
index 4dec9550f6f..1e10d94bb18 100644
--- a/searchlib/src/tests/tensor/hnsw_index/stress_hnsw_mt.cpp
+++ b/searchlib/src/tests/tensor/hnsw_index/stress_hnsw_mt.cpp
@@ -234,7 +234,7 @@ public:
         uint32_t m = 16;
         index = std::make_unique<HnswIndex>(vectors, std::make_unique<FloatSqEuclideanDistance>(),
                                             std::make_unique<InvLogLevelGenerator>(m),
-                                            HnswIndex::Config(2*m, m, 200, true));
+                                            HnswIndex::Config(2*m, m, 200, 10, true));
     }
     size_t get_rnd(size_t size) {
         return rng.nextUniform() * size;