diff --git a/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp b/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
index 78c48abee9..c6c64fdcb4 100644
--- a/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
+++ b/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
@@ -164,7 +164,7 @@ IVFSQHybrid::SetQuantizer(const QuantizerPtr& q) {
 
     faiss::gpu::GpuIndexFlat* is_gpu_flat_index = dynamic_cast<faiss::gpu::GpuIndexFlat*>(ivf_index->quantizer);
     if (is_gpu_flat_index == nullptr) {
-//        delete ivf_index->quantizer;
+        //        delete ivf_index->quantizer;
         ivf_index->quantizer = ivf_quantizer->quantizer;
     }
 }
diff --git a/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.h b/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.h
index d34b28b1c6..73c442093b 100644
--- a/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.h
+++ b/cpp/src/core/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.h
@@ -78,7 +78,7 @@ class IVFSQHybrid : public GPUIVFSQ {
     LoadImpl(const BinarySet& index_binary) override;
 
  protected:
-    int64_t gpu_mode = 0; // 0,1,2
+    int64_t gpu_mode = 0;  // 0,1,2
 };
 
 }  // namespace knowhere
diff --git a/cpp/src/db/engine/ExecutionEngineImpl.cpp b/cpp/src/db/engine/ExecutionEngineImpl.cpp
index d2169b85ec..c5a36db07f 100644
--- a/cpp/src/db/engine/ExecutionEngineImpl.cpp
+++ b/cpp/src/db/engine/ExecutionEngineImpl.cpp
@@ -31,18 +31,18 @@
 #include "wrapper/ConfAdapter.h"
 #include "wrapper/ConfAdapterMgr.h"
 
+#include <src/scheduler/Utils.h>
 #include <stdexcept>
 #include <utility>
-#include <src/scheduler/Utils.h>
+#include <vector>
 
 namespace milvus {
 namespace engine {
 
 class CachedQuantizer : public cache::DataObj {
  public:
-    explicit
-    CachedQuantizer(knowhere::QuantizerPtr data)
-        : data_(std::move(data)) {}
+    explicit CachedQuantizer(knowhere::QuantizerPtr data) : data_(std::move(data)) {
+    }
 
     knowhere::QuantizerPtr
     Data() {
diff --git a/cpp/src/db/engine/ExecutionEngineImpl.h b/cpp/src/db/engine/ExecutionEngineImpl.h
index 7d2f6e9188..4594986bd9 100644
--- a/cpp/src/db/engine/ExecutionEngineImpl.h
+++ b/cpp/src/db/engine/ExecutionEngineImpl.h
@@ -109,7 +109,7 @@ class ExecutionEngineImpl : public ExecutionEngine {
 
     void
     HybridLoad() const;
-    
+
     void
     HybridUnset() const;
 
diff --git a/cpp/src/scheduler/JobMgr.cpp b/cpp/src/scheduler/JobMgr.cpp
index 9b6d7dfe68..a4ef83ad75 100644
--- a/cpp/src/scheduler/JobMgr.cpp
+++ b/cpp/src/scheduler/JobMgr.cpp
@@ -19,8 +19,8 @@
 #include "TaskCreator.h"
 #include "task/Task.h"
 
-#include <utility>
 #include <src/scheduler/optimizer/Optimizer.h>
+#include <utility>
 
 namespace milvus {
 namespace scheduler {
diff --git a/cpp/src/scheduler/Utils.cpp b/cpp/src/scheduler/Utils.cpp
index 61494b9f6c..18f6fc249d 100644
--- a/cpp/src/scheduler/Utils.cpp
+++ b/cpp/src/scheduler/Utils.cpp
@@ -15,12 +15,14 @@
 // specific language governing permissions and limitations
 // under the License.
 
-#include "server/Config.h"
 #include "scheduler/Utils.h"
+#include "server/Config.h"
 #include "utils/Log.h"
 
 #include <cuda_runtime.h>
 #include <chrono>
+#include <set>
+#include <string>
 
 namespace milvus {
 namespace scheduler {
@@ -75,7 +77,7 @@ get_gpu_pool() {
     }
 
     return gpu_pool;
-};
+}
 
 }  // namespace scheduler
 }  // namespace milvus
diff --git a/cpp/src/wrapper/VecImpl.h b/cpp/src/wrapper/VecImpl.h
index 44c6ffe24b..7558201e25 100644
--- a/cpp/src/wrapper/VecImpl.h
+++ b/cpp/src/wrapper/VecImpl.h
@@ -94,7 +94,7 @@ class IVFMixIndex : public VecIndexImpl {
 class IVFHybridIndex : public IVFMixIndex {
  public:
     explicit IVFHybridIndex(std::shared_ptr<knowhere::VectorIndex> index, const IndexType& type)
-    : IVFMixIndex(std::move(index), type) {
+        : IVFMixIndex(std::move(index), type) {
     }
 
     knowhere::QuantizerPtr