diff --git a/internal/core/src/segcore/SegmentGrowingImpl.cpp b/internal/core/src/segcore/SegmentGrowingImpl.cpp
index 3dcfb53fdc..5411467f4b 100644
--- a/internal/core/src/segcore/SegmentGrowingImpl.cpp
+++ b/internal/core/src/segcore/SegmentGrowingImpl.cpp
@@ -23,6 +23,7 @@
 #include "common/EasyAssert.h"
 #include "common/Types.h"
 #include "fmt/format.h"
+#include "log/Log.h"
 #include "nlohmann/json.hpp"
 #include "query/PlanNode.h"
 #include "query/SearchOnSealed.h"
@@ -347,42 +348,52 @@ SegmentGrowingImpl::bulk_subscript(FieldId field_id,
     auto vec_ptr = insert_record_.get_field_data_base(field_id);
     auto& field_meta = schema_->operator[](field_id);
     if (field_meta.is_vector()) {
-        aligned_vector<char> output(field_meta.get_sizeof() * count);
+        auto result = CreateVectorDataArray(count, field_meta);
         if (field_meta.get_data_type() == DataType::VECTOR_FLOAT) {
             bulk_subscript_impl<FloatVector>(field_id,
                                              field_meta.get_sizeof(),
                                              vec_ptr,
                                              seg_offsets,
                                              count,
-                                             output.data());
+                                             result->mutable_vectors()
+                                                 ->mutable_float_vector()
+                                                 ->mutable_data()
+                                                 ->mutable_data());
         } else if (field_meta.get_data_type() == DataType::VECTOR_BINARY) {
-            bulk_subscript_impl<BinaryVector>(field_id,
-                                              field_meta.get_sizeof(),
-                                              vec_ptr,
-                                              seg_offsets,
-                                              count,
-                                              output.data());
+            bulk_subscript_impl<BinaryVector>(
+                field_id,
+                field_meta.get_sizeof(),
+                vec_ptr,
+                seg_offsets,
+                count,
+                result->mutable_vectors()->mutable_binary_vector()->data());
         } else if (field_meta.get_data_type() == DataType::VECTOR_FLOAT16) {
-            bulk_subscript_impl<Float16Vector>(field_id,
-                                               field_meta.get_sizeof(),
-                                               vec_ptr,
-                                               seg_offsets,
-                                               count,
-                                               output.data());
+            bulk_subscript_impl<Float16Vector>(
+                field_id,
+                field_meta.get_sizeof(),
+                vec_ptr,
+                seg_offsets,
+                count,
+                result->mutable_vectors()->mutable_float16_vector()->data());
         } else {
             PanicInfo(DataTypeInvalid, "logical error");
         }
-        return CreateVectorDataArrayFrom(output.data(), count, field_meta);
+        return result;
     }
 
     AssertInfo(!field_meta.is_vector(),
                "Scalar field meta type is vector type");
     switch (field_meta.get_data_type()) {
         case DataType::BOOL: {
-            FixedVector<bool> output(count);
-            bulk_subscript_impl<bool>(
-                vec_ptr, seg_offsets, count, output.data());
-            return CreateScalarDataArrayFrom(output.data(), count, field_meta);
+            auto result = CreateScalarDataArray(count, field_meta);
+            bulk_subscript_impl<bool>(vec_ptr,
+                                      seg_offsets,
+                                      count,
+                                      result->mutable_scalars()
+                                          ->mutable_bool_data()
+                                          ->mutable_data()
+                                          ->mutable_data());
+            return result;
         }
         case DataType::INT8: {
             FixedVector<int8_t> output(count);
@@ -397,28 +408,48 @@ SegmentGrowingImpl::bulk_subscript(FieldId field_id,
             return CreateScalarDataArrayFrom(output.data(), count, field_meta);
         }
         case DataType::INT32: {
-            FixedVector<int32_t> output(count);
-            bulk_subscript_impl<int32_t>(
-                vec_ptr, seg_offsets, count, output.data());
-            return CreateScalarDataArrayFrom(output.data(), count, field_meta);
+            auto result = CreateScalarDataArray(count, field_meta);
+            bulk_subscript_impl<int32_t>(vec_ptr,
+                                         seg_offsets,
+                                         count,
+                                         result->mutable_scalars()
+                                             ->mutable_int_data()
+                                             ->mutable_data()
+                                             ->mutable_data());
+            return result;
         }
         case DataType::INT64: {
-            FixedVector<int64_t> output(count);
-            bulk_subscript_impl<int64_t>(
-                vec_ptr, seg_offsets, count, output.data());
-            return CreateScalarDataArrayFrom(output.data(), count, field_meta);
+            auto result = CreateScalarDataArray(count, field_meta);
+            bulk_subscript_impl<int64_t>(vec_ptr,
+                                         seg_offsets,
+                                         count,
+                                         result->mutable_scalars()
+                                             ->mutable_long_data()
+                                             ->mutable_data()
+                                             ->mutable_data());
+            return result;
         }
         case DataType::FLOAT: {
-            FixedVector<float> output(count);
-            bulk_subscript_impl<float>(
-                vec_ptr, seg_offsets, count, output.data());
-            return CreateScalarDataArrayFrom(output.data(), count, field_meta);
+            auto result = CreateScalarDataArray(count, field_meta);
+            bulk_subscript_impl<float>(vec_ptr,
+                                       seg_offsets,
+                                       count,
+                                       result->mutable_scalars()
+                                           ->mutable_float_data()
+                                           ->mutable_data()
+                                           ->mutable_data());
+            return result;
         }
         case DataType::DOUBLE: {
-            FixedVector<double> output(count);
-            bulk_subscript_impl<double>(
-                vec_ptr, seg_offsets, count, output.data());
-            return CreateScalarDataArrayFrom(output.data(), count, field_meta);
+            auto result = CreateScalarDataArray(count, field_meta);
+            bulk_subscript_impl<double>(vec_ptr,
+                                        seg_offsets,
+                                        count,
+                                        result->mutable_scalars()
+                                            ->mutable_double_data()
+                                            ->mutable_data()
+                                            ->mutable_data());
+            return result;
         }
         case DataType::VARCHAR: {
             FixedVector<std::string> output(count);
diff --git a/internal/core/unittest/test_growing.cpp b/internal/core/unittest/test_growing.cpp
index bb6b84612b..039c78a7ce 100644
--- a/internal/core/unittest/test_growing.cpp
+++ b/internal/core/unittest/test_growing.cpp
@@ -100,6 +100,7 @@ TEST(Growing, RealCount) {
 TEST(Growing, FillData) {
     auto schema = std::make_shared<Schema>();
     auto metric_type = knowhere::metric::L2;
+    auto bool_field = schema->AddDebugField("bool", DataType::BOOL);
     auto int8_field = schema->AddDebugField("int8", DataType::INT8);
     auto int16_field = schema->AddDebugField("int16", DataType::INT16);
     auto int32_field = schema->AddDebugField("int32", DataType::INT32);
@@ -145,6 +146,7 @@ TEST(Growing, FillData) {
     int64_t dim = 128;
     for (int64_t i = 0; i < n_batch; i++) {
         auto dataset = DataGen(schema, per_batch);
+        auto bool_values = dataset.get_col<bool>(bool_field);
         auto int8_values = dataset.get_col<int8_t>(int8_field);
         auto int16_values = dataset.get_col<int16_t>(int16_field);
         auto int32_values = dataset.get_col<int32_t>(int32_field);
@@ -172,6 +174,8 @@ TEST(Growing, FillData) {
                         dataset.raw_);
         auto num_inserted = (i + 1) * per_batch;
         auto ids_ds = GenRandomIds(num_inserted);
+        auto bool_result =
+            segment->bulk_subscript(bool_field, ids_ds->GetIds(), num_inserted);
         auto int8_result =
             segment->bulk_subscript(int8_field, ids_ds->GetIds(), num_inserted);
         auto int16_result = segment->bulk_subscript(
@@ -203,6 +207,7 @@ TEST(Growing, FillData) {
         auto vec_result =
             segment->bulk_subscript(vec, ids_ds->GetIds(), num_inserted);
 
+        EXPECT_EQ(bool_result->scalars().bool_data().data_size(), num_inserted);
         EXPECT_EQ(int8_result->scalars().int_data().data_size(), num_inserted);
         EXPECT_EQ(int16_result->scalars().int_data().data_size(), num_inserted);
         EXPECT_EQ(int32_result->scalars().int_data().data_size(), num_inserted);
diff --git a/internal/core/unittest/test_index_wrapper.cpp b/internal/core/unittest/test_index_wrapper.cpp
index f466becaab..1b5de55a2b 100644
--- a/internal/core/unittest/test_index_wrapper.cpp
+++ b/internal/core/unittest/test_index_wrapper.cpp
@@ -14,6 +14,7 @@
 #include <map>
 #include <tuple>
 
+#include "common/Types.h"
 #include "indexbuilder/IndexFactory.h"
 #include "indexbuilder/VecIndexCreator.h"
 #include "common/QueryResult.h"
@@ -103,8 +104,8 @@ class IndexWrapperTest : public ::testing::TestWithParam<Param> {
     bool is_binary;
     DataType vec_field_data_type;
     knowhere::DataSetPtr xb_dataset;
-    std::vector<float> xb_data;
-    std::vector<uint8_t> xb_bin_data;
+    FixedVector<float> xb_data;
+    FixedVector<uint8_t> xb_bin_data;
     knowhere::DataSetPtr xq_dataset;
     int64_t query_offset = 100;
     int64_t NB = 10000;
@@ -141,8 +142,8 @@ TEST_P(IndexWrapperTest, BuildAndQuery) {
 
     auto dataset = GenDataset(NB, metric_type, is_binary);
     knowhere::DataSetPtr xb_dataset;
-    std::vector<uint8_t> bin_vecs;
-    std::vector<float> f_vecs;
+    FixedVector<uint8_t> bin_vecs;
+    FixedVector<float> f_vecs;
     if (is_binary) {
         bin_vecs = dataset.get_col<uint8_t>(milvus::FieldId(100));
         xb_dataset = knowhere::GenDataSet(NB, DIM, bin_vecs.data());
@@ -153,7 +154,7 @@ TEST_P(IndexWrapperTest, BuildAndQuery) {
 
     ASSERT_NO_THROW(index->Build(xb_dataset));
     auto binary_set = index->Serialize();
-    std::vector<std::string> index_files;
+    FixedVector<std::string> index_files;
     for (auto& binary : binary_set.binary_map_) {
         index_files.emplace_back(binary.first);
     }
diff --git a/internal/core/unittest/test_indexing.cpp b/internal/core/unittest/test_indexing.cpp
index cb2c469619..2962474b29 100644
--- a/internal/core/unittest/test_indexing.cpp
+++ b/internal/core/unittest/test_indexing.cpp
@@ -17,6 +17,7 @@
 #include <vector>
 
 #include "common/EasyAssert.h"
+#include "common/Types.h"
 #include "knowhere/comp/index_param.h"
 #include "nlohmann/json.hpp"
 #include "query/SearchBruteForce.h"
@@ -356,8 +357,8 @@ class IndexTest : public ::testing::TestWithParam<Param> {
     milvus::Config range_search_conf;
     milvus::DataType vec_field_data_type;
     knowhere::DataSetPtr xb_dataset;
-    std::vector<float> xb_data;
-    std::vector<uint8_t> xb_bin_data;
+    FixedVector<float> xb_data;
+    FixedVector<uint8_t> xb_bin_data;
     knowhere::DataSetPtr xq_dataset;
     int64_t query_offset = 100;
     int64_t NB = 3000;
@@ -610,7 +611,7 @@ TEST(Indexing, SearchDiskAnnWithInvalidParam) {
 
     // build disk ann index
     auto dataset = GenDataset(NB, metric_type, false);
-    std::vector<float> xb_data =
+    FixedVector<float> xb_data =
         dataset.get_col<float>(milvus::FieldId(field_id));
     knowhere::DataSetPtr xb_dataset =
         knowhere::GenDataSet(NB, DIM, xb_data.data());
diff --git a/internal/core/unittest/test_utils/DataGen.h b/internal/core/unittest/test_utils/DataGen.h
index 0d4fae4ec6..2be6c49002 100644
--- a/internal/core/unittest/test_utils/DataGen.h
+++ b/internal/core/unittest/test_utils/DataGen.h
@@ -21,6 +21,7 @@
 #include "Constants.h"
 #include "common/EasyAssert.h"
 #include "common/Schema.h"
+#include "common/Types.h"
 #include "index/ScalarIndexSort.h"
 #include "index/StringIndexSort.h"
 #include "index/VectorMemIndex.h"
@@ -81,9 +82,9 @@ struct GeneratedData {
     }
 
     template <typename T>
-    std::vector<T>
+    FixedVector<T>
     get_col(FieldId field_id) const {
-        std::vector<T> ret(raw_->num_rows());
+        FixedVector<T> ret(raw_->num_rows());
         for (auto i = 0; i < raw_->fields_data_size(); i++) {
             auto target_field_data = raw_->fields_data(i);
             if (field_id.get() != target_field_data.field_id()) {