diff --git a/.gitignore b/.gitignore
index 8600ed0dc72a4e93a02d1ca2e2efb1a9b403daa2..c49938acc27d107eed1369483a0bd06288add86a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ cpp/cmake-build-debug/
 cpp/cmake-build-release/
 cpp/cmake_build
 cpp/.idea/
+cpp/thirdparty/knowhere_build
 
 .idea/
 .ycm_extra_conf.py
diff --git a/cpp/src/server/grpc_impl/RequestTask.cpp b/cpp/src/server/grpc_impl/RequestTask.cpp
index 6e4a1771144d9612154871fe24ef588739ae74f2..c27daaa9663aec3fa9dc19985f2f5a61e18cda6d 100644
--- a/cpp/src/server/grpc_impl/RequestTask.cpp
+++ b/cpp/src/server/grpc_impl/RequestTask.cpp
@@ -107,6 +107,8 @@ CreateTableTask::CreateTableTask(const ::milvus::grpc::TableSchema& schema)
 
 BaseTaskPtr
 CreateTableTask::Create(const ::milvus::grpc::TableSchema& schema) {
+//    BaseTaskPtr create_table_task_ptr = std::make_shared<CreateTableTask>(schema);
+//    return create_table_task_ptr;
     return std::shared_ptr<BaseTask>(new CreateTableTask(schema));
 }
 
diff --git a/cpp/thirdparty/knowhere b/cpp/thirdparty/knowhere
new file mode 160000
index 0000000000000000000000000000000000000000..98c56500b5b26a3502e2fea474586267ac6625f0
--- /dev/null
+++ b/cpp/thirdparty/knowhere
@@ -0,0 +1 @@
+Subproject commit 98c56500b5b26a3502e2fea474586267ac6625f0