Merge branch 'fix_hybrid' into 'branch-0.5.0'

Fix hybrid

See merge request megasearch/milvus!717

Former-commit-id: 686e6891173231a78bcf4be1b66ee3f3977a8004

core/CHANGELOG.md

@@ -20,6 +20,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-647 - [monitor] grafana display average cpu-temp
 - MS-644 - Search crashed with index-type: flat
 - MS-624 - Search vectors failed if time ranges long enough
+- MS-652 - IVFSQH quantization double free
 
 ## Improvement
 - MS-552 - Add and change the easylogging library

core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp

@@ -79,8 +79,24 @@ IVFSQHybrid::CopyGpuToCpu(const Config& config) {
 
 VectorIndexPtr
 IVFSQHybrid::CopyCpuToGpu(const int64_t& device_id, const Config& config) {
-    auto p = CopyCpuToGpuWithQuantizer(device_id, config);
-    return p.first;
+    if (auto res = FaissGpuResourceMgr::GetInstance().GetRes(device_id)) {
+        ResScope rs(res, device_id, false);
+        faiss::gpu::GpuClonerOptions option;
+        option.allInGpu = true;
+
+        faiss::IndexComposition index_composition;
+        index_composition.index = index_.get();
+        index_composition.quantizer = nullptr;
+        index_composition.mode = 0;  // copy all
+
+        auto gpu_index = faiss::gpu::index_cpu_to_gpu(res->faiss_res.get(), device_id, &index_composition, &option);
+
+        std::shared_ptr<faiss::Index> device_index = std::shared_ptr<faiss::Index>(gpu_index);;
+        auto new_idx = std::make_shared<IVFSQHybrid>(device_index, device_id, res);
+        return new_idx;
+    } else {
+        KNOWHERE_THROW_MSG("CopyCpuToGpu Error, can't get gpu_resource");
+    }
 }
 
 void