diff --git a/core/src/wrapper/VecImpl.cpp b/core/src/wrapper/VecImpl.cpp
index 6d681f7600ea0b6e30cdf90107899d3b702c3cbf..74e9e94a2fa8a98f8d45000b7e59ccc2d5e08cd8 100644
--- a/core/src/wrapper/VecImpl.cpp
+++ b/core/src/wrapper/VecImpl.cpp
@@ -248,130 +248,5 @@ BFIndex::BuildAll(const int64_t& nb, const float* xb, const int64_t* ids, const
     return Status::OK();
 }
 
-// TODO(linxj): add lock here.
-Status
-IVFMixIndex::BuildAll(const int64_t& nb, const float* xb, const int64_t* ids, const Config& cfg, const int64_t& nt,
-                      const float* xt) {
-    try {
-        dim = cfg->d;
-        auto dataset = GenDatasetWithIds(nb, dim, xb, ids);
-
-        auto preprocessor = index_->BuildPreprocessor(dataset, cfg);
-        index_->set_preprocessor(preprocessor);
-        auto model = index_->Train(dataset, cfg);
-        index_->set_index_model(model);
-        index_->Add(dataset, cfg);
-
-        if (auto device_index = std::dynamic_pointer_cast<knowhere::GPUIndex>(index_)) {
-            auto host_index = device_index->CopyGpuToCpu(Config());
-            index_ = host_index;
-            type = ConvertToCpuIndexType(type);
-        } else {
-            WRAPPER_LOG_ERROR << "Build IVFMIXIndex Failed";
-            return Status(KNOWHERE_ERROR, "Build IVFMIXIndex Failed");
-        }
-    } catch (knowhere::KnowhereException& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_UNEXPECTED_ERROR, e.what());
-    } catch (std::exception& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_ERROR, e.what());
-    }
-    return Status::OK();
-}
-
-Status
-IVFMixIndex::Load(const knowhere::BinarySet& index_binary) {
-    index_->Load(index_binary);
-    dim = Dimension();
-    return Status::OK();
-}
-
-knowhere::QuantizerPtr
-IVFHybridIndex::LoadQuantizer(const Config& conf) {
-    // TODO(linxj): Hardcode here
-    if (auto new_idx = std::dynamic_pointer_cast<knowhere::IVFSQHybrid>(index_)) {
-        return new_idx->LoadQuantizer(conf);
-    } else {
-        WRAPPER_LOG_ERROR << "Hybrid mode not supported for index type: " << int(type);
-    }
-}
-
-Status
-IVFHybridIndex::SetQuantizer(const knowhere::QuantizerPtr& q) {
-    try {
-        // TODO(linxj): Hardcode here
-        if (auto new_idx = std::dynamic_pointer_cast<knowhere::IVFSQHybrid>(index_)) {
-            new_idx->SetQuantizer(q);
-        } else {
-            WRAPPER_LOG_ERROR << "Hybrid mode not supported for index type: " << int(type);
-            return Status(KNOWHERE_ERROR, "not supported");
-        }
-    } catch (knowhere::KnowhereException& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_UNEXPECTED_ERROR, e.what());
-    } catch (std::exception& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_ERROR, e.what());
-    }
-    return Status::OK();
-}
-
-Status
-IVFHybridIndex::UnsetQuantizer() {
-    try {
-        // TODO(linxj): Hardcode here
-        if (auto new_idx = std::dynamic_pointer_cast<knowhere::IVFSQHybrid>(index_)) {
-            new_idx->UnsetQuantizer();
-        } else {
-            WRAPPER_LOG_ERROR << "Hybrid mode not supported for index type: " << int(type);
-            return Status(KNOWHERE_ERROR, "not supported");
-        }
-    } catch (knowhere::KnowhereException& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_UNEXPECTED_ERROR, e.what());
-    } catch (std::exception& e) {
-        WRAPPER_LOG_ERROR << e.what();
-        return Status(KNOWHERE_ERROR, e.what());
-    }
-    return Status::OK();
-}
-
-VecIndexPtr
-IVFHybridIndex::LoadData(const knowhere::QuantizerPtr& q, const Config& conf) {
-    try {
-        // TODO(linxj): Hardcode here
-        if (auto new_idx = std::dynamic_pointer_cast<knowhere::IVFSQHybrid>(index_)) {
-            return std::make_shared<IVFHybridIndex>(new_idx->LoadData(q, conf), type);
-        } else {
-            WRAPPER_LOG_ERROR << "Hybrid mode not supported for index type: " << int(type);
-        }
-    } catch (knowhere::KnowhereException& e) {
-        WRAPPER_LOG_ERROR << e.what();
-    } catch (std::exception& e) {
-        WRAPPER_LOG_ERROR << e.what();
-    }
-    return nullptr;
-}
-
-std::pair<VecIndexPtr, knowhere::QuantizerPtr>
-IVFHybridIndex::CopyToGpuWithQuantizer(const int64_t& device_id, const Config& cfg) {
-    try {
-        // TODO(linxj): Hardcode here
-        if (auto hybrid_idx = std::dynamic_pointer_cast<knowhere::IVFSQHybrid>(index_)) {
-            auto pair = hybrid_idx->CopyCpuToGpuWithQuantizer(device_id, cfg);
-            auto new_idx = std::make_shared<IVFHybridIndex>(pair.first, type);
-            return std::make_pair(new_idx, pair.second);
-        } else {
-            WRAPPER_LOG_ERROR << "Hybrid mode not supported for index type: " << int(type);
-        }
-    } catch (knowhere::KnowhereException& e) {
-        WRAPPER_LOG_ERROR << e.what();
-    } catch (std::exception& e) {
-        WRAPPER_LOG_ERROR << e.what();
-    }
-    return std::make_pair(nullptr, nullptr);
-}
-
 }  // namespace engine
 }  // namespace milvus