add input data type check for ps cache mode

mindspore/ccsrc/minddata/dataset/engine/datasetops/device_queue_op.cc

@@ -301,10 +301,9 @@ Status DeviceQueueOp::PushDataToGPU() {
     }
 
     // Data prefetch only when PS mode enables cache.
-    if (items.size() > 0) {
-      if (!ps::PsDataPrefetch::GetInstance().PrefetchData(channel_name_, items[0].data_ptr_, items[0].data_len_)) {
-        return Status(StatusCode::kMDTimeOut, __LINE__, __FILE__, "Failed to prefetch data.");
-      }
+    if (!ps::PsDataPrefetch::GetInstance().PrefetchData(channel_name_, items[0].data_ptr_, items[0].data_len_,
+                                                        items[0].data_type_)) {
+      return Status(StatusCode::kMDTimeOut, __LINE__, __FILE__, "Failed to prefetch data.");
     }
     while (!GpuBufferMgr::GetInstance().IsClosed() && !TaskManager::FindMe()->Interrupted()) {
       BlockQueueStatus_T ret = GpuBufferMgr::GetInstance().Push(handle, items, WAIT_TIME);
@@ -434,6 +433,11 @@ Status DeviceQueueOp::MallocForGPUData(std::vector<device::DataItemGpu> *items,
     if (sub_item.data_ptr_ == nullptr) {
       return Status(StatusCode::kMDOutOfMemory, __LINE__, __FILE__, "Memory malloc failed.");
     }
+    if (curr_row[i] == nullptr) {
+      MS_LOG(ERROR) << "The pointer curr_row[" << i << "] is null";
+      return Status(StatusCode::kMDUnexpectedError, __LINE__, __FILE__, "TensorRow 'curr_row' contains nullptr.");
+    }
+    sub_item.data_type_ = curr_row[i]->type().ToString();
     const unsigned char *column_data = curr_row[i]->GetBuffer();
     if (memcpy_s(sub_item.data_ptr_, sub_item.data_len_, column_data,
                  static_cast<uint32_t>(curr_row[i++]->SizeInBytes())) != 0) {

mindspore/ccsrc/minddata/dataset/engine/tdt/tdt_plugin.cc

@@ -55,7 +55,8 @@ TdtStatus TdtPlugin::hostPush(TensorRow ts_row, bool is_wait, std::string channe
 #if ENABLE_D
   // Data prefetch only when PS mode enables cache.
   if (items.size() > 0) {
-    if (!ps::PsDataPrefetch::GetInstance().PrefetchData(channel_name, items[0].dataPtr_.get(), items[0].dataLen_)) {
+    if (!ps::PsDataPrefetch::GetInstance().PrefetchData(channel_name, items[0].dataPtr_.get(), items[0].dataLen_,
+                                                        items[0].tensorType_)) {
       return FAILED;
     }
   }

mindspore/ccsrc/ps/ps_cache/ps_data/ps_data_prefetch.cc

@@ -44,10 +44,17 @@ std::shared_ptr<PsDataChannel> PsDataPrefetch::ps_data_channel(const std::string
   return iter->second;
 }
 
-bool PsDataPrefetch::PrefetchData(const std::string &channel_name, void *data, const size_t data_size) {
+bool PsDataPrefetch::PrefetchData(const std::string &channel_name, void *data, const size_t data_size,
+                                  const std::string &data_type) {
   if (cache_enable_ == false) {
     return true;
   }
+  // In ps cache mode, input ids are from dataset and data type transmitted from minddata must be 'int32'
+  const std::string supported_data_type = "int32";
+  if (data_type != supported_data_type) {
+    MS_LOG(ERROR) << "Parameter server cache mode need input id with data type[int32], but got[" << data_type << "]";
+    return false;
+  }
   if (data == nullptr) {
     MS_LOG(WARNING) << "No data prefetch.";
     return true;

mindspore/ccsrc/ps/ps_cache/ps_data/ps_data_prefetch.h

@@ -37,7 +37,8 @@ class EXPORT PsDataPrefetch {
   EXPORT bool cache_enable() const { return cache_enable_; }
   EXPORT void set_cache_enable(bool cache_enable) { cache_enable_ = cache_enable; }
   EXPORT void CreateDataChannel(const std::string &channel_name, size_t step_num);
-  EXPORT bool PrefetchData(const std::string &channel_name, void *data, const size_t data_size);
+  EXPORT bool PrefetchData(const std::string &channel_name, void *data, const size_t data_size,
+                           const std::string &data_type);
   EXPORT bool FinalizeData(const std::string &channel_name);
   EXPORT void NotifyFinalize();
   EXPORT void *data(const std::string &channel_name) const;

mindspore/ccsrc/runtime/device/gpu/blocking_queue.h

@@ -34,6 +34,7 @@ enum BlockQueueStatus_T : int { SUCCESS = 0, QUEUE_NOT_EXIST, HANDLE_NOT_EXIST,
 
 struct DataItemGpu {
   int32_t worker_id_;
+  std::string data_type_;
   size_t data_len_;
   void *data_ptr_;
 };