diff --git a/python_bindings/setup.py b/python_bindings/setup.py
index 0808994..c01800e 100755
--- a/python_bindings/setup.py
+++ b/python_bindings/setup.py
@@ -21,6 +21,7 @@
 if os.path.exists(library_file):
     # if we have a prebuilt nmslib library file, use that.
     extra_objects.append(library_file)
+    print("Found: " + os.path.abspath(library_file))
 else:
     raise RuntimeError("can't find prebuild lib: " + os.path.abspath(library_file))
     # # Otherwise build all the files here directly (excluding extras which need eigen/boost)
diff --git a/python_bindings/tests/bindings_test.py b/python_bindings/tests/bindings_test.py
index f134738..a42939e 100644
--- a/python_bindings/tests/bindings_test.py
+++ b/python_bindings/tests/bindings_test.py
@@ -6,6 +6,7 @@
 import numpy.testing as npt
 
 import nmslib
+import psutil
 
 
 def get_exact_cosine(row, data, N=10):
@@ -92,21 +93,30 @@ def _get_index(self, space='bit_jaccard'):
         raise NotImplementedError()
 
     def testKnnQuery(self):
-        np.random.seed(23)
-        nbits = 128
+        nbits = 2048
+        chunk_size = 1000
 
+        ps_proc = psutil.Process()
+        print(f"\n{ps_proc.memory_info()}")
         index = self._get_index()
 
-        for i in range(100):
-            a = np.random.rand(nbits) > 0.5
-            s = " ".join(["1" if e else "0" for e in a])
-            index.addDataPoint(id=i, data=s)
+        np.random.seed(23)
+        for i in range(0, 10000, chunk_size):
+            strs = []
+            for j in range(chunk_size):
+                a = np.random.rand(nbits) > 0.5
+                s = " ".join(["1" if e else "0" for e in a])
+                strs.append(s)
+            index.addDataPointBatch(ids=np.arange(i, i +  chunk_size), data=strs)
+
+        print(f"\n{ps_proc.memory_info()}")
         index.createIndex()
+        print(f"\n{ps_proc.memory_info()}")
 
         a = np.ones(nbits)
         s = " ".join(["1" if e else "0" for e in a])
         ids, distances = index.knnQuery(s, k=10)
-        print(ids)
+        # print(ids)
         print(distances)
         # self.assertTrue(get_hitrate(get_exact_cosine(row, data), ids) >= 5)
 
@@ -170,8 +180,14 @@ def _get_index(self, space='cosinesimil'):
 
 class BitJaccardTestCase(unittest.TestCase, BitVectorIndexTestMixin):
     def _get_index(self, space='bit_jaccard'):
-        return nmslib.init(method='hnsw', space='bit_jaccard', data_type=nmslib.DataType.OBJECT_AS_STRING,
-                           dtype=nmslib.DistType.DOUBLE)
+        return nmslib.init(method='hnsw', space=space, data_type=nmslib.DataType.OBJECT_AS_STRING,
+                           dtype=nmslib.DistType.FLOAT)
+
+
+class SparseJaccardTestCase(unittest.TestCase, BitVectorIndexTestMixin):
+    def _get_index(self, space='jaccard_sparse'):
+        return nmslib.init(method='hnsw', space=space, data_type=nmslib.DataType.OBJECT_AS_STRING,
+                           dtype=nmslib.DistType.FLOAT)
 
 
 # class BitHammingTestCase(unittest.TestCase, BitVectorIndexTestMixin):
diff --git a/similarity_search/include/factory/init_spaces.h b/similarity_search/include/factory/init_spaces.h
index dd0aae7..8abee56 100644
--- a/similarity_search/include/factory/init_spaces.h
+++ b/similarity_search/include/factory/init_spaces.h
@@ -46,8 +46,8 @@ inline void initSpaces() {
   // Registering binary/bit Hamming/Jaccard
   SpaceFactoryRegistry<int>::CreateFuncPtr bit_hamming_func_ptr = CreateBitHamming<int,uint32_t>;
   REGISTER_SPACE_CREATOR(int,    SPACE_BIT_HAMMING, bit_hamming_func_ptr )
-  SpaceFactoryRegistry<double>::CreateFuncPtr bit_jaccard_func_ptr = CreateBitJaccard<double,uint64_t>;
-  REGISTER_SPACE_CREATOR(double, SPACE_BIT_JACCARD,  bit_jaccard_func_ptr )
+  SpaceFactoryRegistry<float>::CreateFuncPtr bit_jaccard_func_ptr = CreateBitJaccard<float,uint32_t>;
+  REGISTER_SPACE_CREATOR(float, SPACE_BIT_JACCARD,  bit_jaccard_func_ptr )
 
   // Registering the Levensthein-distance: regular and normalized
   REGISTER_SPACE_CREATOR(int,   SPACE_LEVENSHTEIN,  CreateLevenshtein)
diff --git a/similarity_search/test/test_space_serial.cc b/similarity_search/test/test_space_serial.cc
index e8db105..5dd36b7 100644
--- a/similarity_search/test/test_space_serial.cc
+++ b/similarity_search/test/test_space_serial.cc
@@ -231,7 +231,7 @@ TEST(Test_BitJaccard) {
     testVect.push_back(ss.str());
   }
   for (size_t maxNumRec = 1; maxNumRec < MAX_NUM_REC; ++maxNumRec) {
-    EXPECT_EQ(true, fullTest<double>(testVect, maxNumRec, "tmp_out_file.txt", "bit_jaccard", emptyParams, false));
+    EXPECT_EQ(true, fullTest<float>(testVect, maxNumRec, "tmp_out_file.txt", "bit_jaccard", emptyParams, false));
   }
 }