diff --git a/core/src/server/grpc_impl/GrpcRequestHandler.cpp b/core/src/server/grpc_impl/GrpcRequestHandler.cpp
index 432244a03f..504eed7d96 100644
--- a/core/src/server/grpc_impl/GrpcRequestHandler.cpp
+++ b/core/src/server/grpc_impl/GrpcRequestHandler.cpp
@@ -115,18 +115,18 @@ CopyVectorData(const google::protobuf::RepeatedPtrField<::milvus::grpc::VectorRo
     }
 
     // copy vector data
-    std::vector<uint8_t> binary_array(data_size, 0);
+    vectors_data.resize(data_size);
     int64_t offset = 0;
     if (float_data_size > 0) {
         for (auto& record : grpc_records) {
             int64_t single_size = record.float_data_size() * sizeof(float);
-            memcpy(&binary_array[offset], record.float_data().data(), single_size);
+            memcpy(&vectors_data[offset], record.float_data().data(), single_size);
             offset += single_size;
         }
     } else if (binary_data_size > 0) {
         for (auto& record : grpc_records) {
             int64_t single_size = record.binary_data().size();
-            memcpy(&binary_array[offset], record.binary_data().data(), single_size);
+            memcpy(&vectors_data[offset], record.binary_data().data(), single_size);
             offset += single_size;
         }
     }
diff --git a/sdk/examples/simple/src/ClientTest.cpp b/sdk/examples/simple/src/ClientTest.cpp
index 51b563d422..432a2d77ed 100644
--- a/sdk/examples/simple/src/ClientTest.cpp
+++ b/sdk/examples/simple/src/ClientTest.cpp
@@ -110,7 +110,7 @@ ClientTest::CreateCollection(const std::string& collection_name) {
     field_ptr2->index_params = index_param_2.dump();
 
     field_ptr3->field_name = "field_3";
-    field_ptr3->field_type = milvus::DataType::INT8;
+    field_ptr3->field_type = milvus::DataType::INT32;
     JSON index_param_3;
     index_param_3["name"] = "index_3";
     field_ptr3->index_params = index_param_3.dump();
@@ -343,7 +343,7 @@ ClientTest::Test() {
     ShowSdkVersion();
 
     std::vector<std::string> table_array;
-    ShowCollections(table_array);
+//    ShowCollections(table_array);
 
     CreateCollection(collection_name);
     GetCollectionInfo(collection_name);