fix the crash caused by Task::label() is null in issue#3472 (#3523) (#3527)

Signed-off-by: Ngodchen0212 <qingxiang.chen@zilliz.com>

core/src/codecs/DeletedDocsFormat.cpp

@@ -86,9 +86,12 @@ DeletedDocsFormat::Write(const storage::FSHandlerPtr& fs_ptr, const std::string&
     size_t old_num_bytes;
     std::vector<engine::offset_t> delete_ids;
     if (exists) {
+        CHECK_MAGIC_VALID(fs_ptr, full_file_path);
+        CHECK_SUM_VALID(fs_ptr, full_file_path);
         if (!fs_ptr->reader_ptr_->Open(temp_path)) {
             return Status(SERVER_CANNOT_OPEN_FILE, "Fail to open tmp deleted docs file: " + temp_path);
         }
+        fs_ptr->reader_ptr_->Seekg(MAGIC_SIZE + HEADER_SIZE);
         fs_ptr->reader_ptr_->Read(&old_num_bytes, sizeof(size_t));
         delete_ids.resize(old_num_bytes / sizeof(engine::offset_t));
         fs_ptr->reader_ptr_->Read(delete_ids.data(), old_num_bytes);

core/src/scheduler/resource/Resource.cpp

@@ -217,6 +217,8 @@ Resource::executor_function() {
                 ResMgrInst::GetInstance()->GetResource("disk")->WakeupLoader();
             }
 
+            task_item->task = FinishedTask::Create(task_item->task);
+
             if (subscriber_) {
                 auto event = std::make_shared<FinishTaskEvent>(shared_from_this(), task_item);
                 subscriber_(std::static_pointer_cast<Event>(event));

core/src/scheduler/task/FinishedTask.cpp

@@ -14,11 +14,14 @@
 namespace milvus::scheduler {
 
 std::shared_ptr<FinishedTask>
-FinishedTask::Create() {
-    return std::make_shared<FinishedTask>();
+FinishedTask::Create(const TaskPtr& task) {
+    return std::make_shared<FinishedTask>(task);
 }
 
-FinishedTask::FinishedTask() : Task(TaskType::SearchTask, nullptr) {
+FinishedTask::FinishedTask(const TaskPtr& task) : Task(TaskType::SearchTask, nullptr) {
+    Task::task_path_ = task->task_path_;
+    Task::type_ = task->type_;
+    Task::label_ = task->label_;
 }
 
 Status

core/src/scheduler/task/FinishedTask.h

@@ -20,10 +20,10 @@ namespace milvus::scheduler {
 class FinishedTask : public Task {
  public:
     static std::shared_ptr<FinishedTask>
-    Create();
+    Create(const TaskPtr& task);
 
  public:
-    FinishedTask();
+    explicit FinishedTask(const TaskPtr& task);
 
     Status
     OnLoad(LoadType type, uint8_t device_id) override;