diff --git a/mindspore/ccsrc/minddata/dataset/engine/datasetops/parallel_op.h b/mindspore/ccsrc/minddata/dataset/engine/datasetops/parallel_op.h
index a41ecd7447e..74ba18949fd 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/datasetops/parallel_op.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/datasetops/parallel_op.h
@@ -49,10 +49,8 @@ class ParallelOp : public DatasetOp {
         epoch_sync_flag_(false),
         next_worker_id_(0) {
     // reduce excessive memory usage with high parallelism
-    // when num_workers > 4, reduce op_connector_size to have similar total size if there were only 4 workers
     constexpr int32_t worker_limit = 4;
     if (num_workers_ > worker_limit) {
-      oc_queue_size_ = std::max(1, op_connector_size * worker_limit / num_workers_);
       worker_connector_size_ = std::max(1, op_connector_size * worker_limit / num_workers_);
     }
   }
diff --git a/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/clue_op.h b/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/clue_op.h
index 3922c81ec91..3ad0a4ff847 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/clue_op.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/clue_op.h
@@ -67,7 +67,7 @@ class ClueOp : public NonMappableLeafOp {
 
   // Op name getter
   // @return Name of the current Op
-  std::string Name() const override { return "ClueOp"; }
+  std::string Name() const override { return "CLUEOp"; }
 
  private:
   // Reads a clue file and loads the data into multiple TensorRows.
diff --git a/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/csv_op.h b/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/csv_op.h
index 79866201865..98fa4b3ae22 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/csv_op.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/datasetops/source/csv_op.h
@@ -181,7 +181,7 @@ class CsvOp : public NonMappableLeafOp {
 
   /// Op name getter
   /// @return Name of the current Op
-  std::string Name() const override { return "CsvOp"; }
+  std::string Name() const override { return "CSVOp"; }
 
   // DatasetName name getter
   // \return DatasetName of the current Op
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/batch_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/batch_node.cc
index 8e3bbd68441..13d73f82ec6 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/batch_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/batch_node.cc
@@ -61,6 +61,8 @@ std::shared_ptr<DatasetNode> BatchNode::Copy() {
 #else
   auto node = std::make_shared<BatchNode>(nullptr, batch_size_, drop_remainder_);
 #endif
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -155,6 +157,7 @@ Status BatchNode::AcceptAfter(IRNodePass *const p, bool *const modified) {
 Status BatchNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["batch_size"] = batch_size_;
   args["drop_remainder"] = drop_remainder_;
 #ifdef ENABLE_PYTHON
@@ -170,12 +173,14 @@ Status BatchNode::to_json(nlohmann::json *out_json) {
 Status BatchNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> ds,
                             std::shared_ptr<DatasetNode> *result) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kBatchNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kBatchNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "batch_size", kBatchNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "drop_remainder", kBatchNode));
   int32_t batch_size = json_obj["batch_size"];
   bool drop_remainder = json_obj["drop_remainder"];
   *result = std::make_shared<BatchNode>(ds, batch_size, drop_remainder);
   (*result)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (*result)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.cc
index 63e290b79ed..b1b8bdbaddb 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.cc
@@ -228,6 +228,11 @@ std::shared_ptr<DatasetNode> DatasetNode::SetNumWorkers(int32_t num_workers) {
   return shared_from_this();
 }
 
+std::shared_ptr<DatasetNode> DatasetNode::SetConnectorQueueSize(int32_t connector_queue_size) {
+  connector_que_size_ = connector_queue_size;
+  return shared_from_this();
+}
+
 std::shared_ptr<DatasetNode> DatasetNode::SetDatasetCache(const std::shared_ptr<DatasetCache> &cache) {
   cache_ = cache;
   return shared_from_this();
@@ -657,6 +662,7 @@ Status DatasetNode::ValidateParams() {
 Status DatasetNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   *out_json = args;
   return Status::OK();
 }
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.h b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.h
index 0508431a2f5..60e66c93d10 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/dataset_node.h
@@ -303,6 +303,9 @@ class DatasetNode : public std::enable_shared_from_this<DatasetNode> {
   /// \brief Getter of the number of workers
   int32_t NumWorkers() const { return num_workers_; }
 
+  /// \brief Getter of the connector queue size
+  int32_t ConnectorQueueSize() { return connector_que_size_; }
+
   /// \brief Getter of dataset cache
   std::shared_ptr<DatasetCache> GetDatasetCache() { return cache_; }
 
@@ -311,6 +314,8 @@ class DatasetNode : public std::enable_shared_from_this<DatasetNode> {
   /// \return Shared pointer to the original object
   std::shared_ptr<DatasetNode> SetNumWorkers(int32_t num_workers);
 
+  std::shared_ptr<DatasetNode> SetConnectorQueueSize(int32_t connector_queue_size);
+
   /// \brief Setter function for DatasetCache
   /// \param[in] cache Shared pointer to DatasetCache
   /// \return Shared pointer to the original object
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/map_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/map_node.cc
index 2fed0075008..f15254370d0 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/map_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/map_node.cc
@@ -50,6 +50,8 @@ std::shared_ptr<DatasetNode> MapNode::Copy() {
   std::vector<std::shared_ptr<TensorOperation>> operations = operations_;
   auto node = std::make_shared<MapNode>(nullptr, operations, input_columns_, output_columns_, project_columns_, cache_,
                                         callbacks_, offload_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -80,8 +82,6 @@ Status MapNode::Build(std::vector<std::shared_ptr<DatasetOp>> *const node_ops) {
       RETURN_STATUS_UNEXPECTED("MapNode containing random operation is not supported as a descendant of cache.");
     }
   }
-  // This parameter will be removed with next rebase
-  std::vector<std::string> col_orders;
   auto map_op = std::make_shared<MapOp>(input_columns_, output_columns_, tensor_ops, num_workers_, connector_que_size_);
 
   if (!callbacks_.empty()) {
@@ -156,6 +156,7 @@ Status MapNode::to_json(nlohmann::json *out_json) {
   RETURN_UNEXPECTED_IF_NULL(out_json);
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["input_columns"] = input_columns_;
   args["output_columns"] = output_columns_;
   args["project_columns"] = project_columns_;
@@ -192,6 +193,7 @@ Status MapNode::to_json(nlohmann::json *out_json) {
 Status MapNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> ds,
                           std::shared_ptr<DatasetNode> *result) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kMapNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kMapNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "input_columns", kMapNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "output_columns", kMapNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "project_columns", kMapNode));
@@ -203,6 +205,7 @@ Status MapNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode>
   RETURN_IF_NOT_OK(Serdes::ConstructTensorOps(json_obj["operations"], &operations));
   *result = std::make_shared<MapNode>(ds, operations, input_columns, output_columns, project_columns);
   (*result)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (*result)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/ag_news_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/ag_news_node.cc
index 27261dd12a5..f6d856f26fe 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/ag_news_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/ag_news_node.cc
@@ -45,6 +45,8 @@ AGNewsNode::AGNewsNode(const std::string &dataset_dir, int64_t num_samples, Shuf
 std::shared_ptr<DatasetNode> AGNewsNode::Copy() {
   auto node =
     std::make_shared<AGNewsNode>(dataset_dir_, num_samples_, shuffle_, usage_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -131,6 +133,7 @@ Status AGNewsNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size
 Status AGNewsNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/album_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/album_node.cc
index 634643bc11c..156340c9566 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/album_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/album_node.cc
@@ -45,6 +45,8 @@ AlbumNode::AlbumNode(const std::string &dataset_dir, const std::string &data_sch
 std::shared_ptr<DatasetNode> AlbumNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<AlbumNode>(dataset_dir_, schema_path_, column_names_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -132,6 +134,7 @@ Status AlbumNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["decode"] = decode_;
   args["data_schema"] = schema_path_;
@@ -148,6 +151,7 @@ Status AlbumNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status AlbumNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kAlbumNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kAlbumNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kAlbumNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "data_schema", kAlbumNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "column_names", kAlbumNode));
@@ -163,6 +167,7 @@ Status AlbumNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<AlbumNode>(dataset_dir, data_schema, column_names, decode, sampler, cache);
   (void)((*ds)->SetNumWorkers(json_obj["num_parallel_workers"]));
+  (void)((*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]));
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/amazon_review_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/amazon_review_node.cc
index cac6650c608..69fcc777b37 100755
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/amazon_review_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/amazon_review_node.cc
@@ -44,6 +44,8 @@ AmazonReviewNode::AmazonReviewNode(const std::string &dataset_dir, const std::st
 std::shared_ptr<DatasetNode> AmazonReviewNode::Copy() {
   auto node =
     std::make_shared<AmazonReviewNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -133,6 +135,7 @@ Status AmazonReviewNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter>
 Status AmazonReviewNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/caltech256_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/caltech256_node.cc
index 921318cc724..b33d6a21a59 100755
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/caltech256_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/caltech256_node.cc
@@ -103,6 +103,7 @@ Status Caltech256Node::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["decode"] = decode_;
   if (cache_ != nullptr) {
@@ -117,6 +118,7 @@ Status Caltech256Node::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status Caltech256Node::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCaltech256Node));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCaltech256Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCaltech256Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "decode", kCaltech256Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kCaltech256Node));
@@ -127,7 +129,8 @@ Status Caltech256Node::from_json(nlohmann::json json_obj, std::shared_ptr<Datase
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<Caltech256Node>(dataset_dir, decode, sampler, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/celeba_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/celeba_node.cc
index c23fafc7375..79e703548b7 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/celeba_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/celeba_node.cc
@@ -46,6 +46,8 @@ CelebANode::CelebANode(const std::string &dataset_dir, const std::string &usage,
 std::shared_ptr<DatasetNode> CelebANode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<CelebANode>(dataset_dir_, usage_, sampler, decode_, extensions_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -176,6 +178,7 @@ Status CelebANode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["decode"] = decode_;
   args["extensions"] = extensions_;
@@ -192,6 +195,7 @@ Status CelebANode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status CelebANode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCelebANode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCelebANode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCelebANode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kCelebANode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kCelebANode));
@@ -206,7 +210,8 @@ Status CelebANode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNod
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<CelebANode>(dataset_dir, usage, sampler, decode, extension, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar100_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar100_node.cc
index 048884bec64..fb8370b6a2a 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar100_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar100_node.cc
@@ -38,6 +38,8 @@ Cifar100Node::Cifar100Node(const std::string &dataset_dir, const std::string &us
 std::shared_ptr<DatasetNode> Cifar100Node::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<Cifar100Node>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -110,6 +112,7 @@ Status Cifar100Node::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
@@ -124,6 +127,7 @@ Status Cifar100Node::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status Cifar100Node::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCifar100Node));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCifar100Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCifar100Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kCifar100Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kCifar100Node));
@@ -134,7 +138,8 @@ Status Cifar100Node::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetN
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<Cifar100Node>(dataset_dir, usage, sampler, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar10_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar10_node.cc
index 2da1b871fb2..115d5baa98f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar10_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cifar10_node.cc
@@ -38,6 +38,8 @@ Cifar10Node::Cifar10Node(const std::string &dataset_dir, const std::string &usag
 std::shared_ptr<DatasetNode> Cifar10Node::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<Cifar10Node>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -111,6 +113,7 @@ Status Cifar10Node::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
@@ -125,6 +128,7 @@ Status Cifar10Node::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status Cifar10Node::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCifar10Node));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCifar10Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCifar10Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kCifar10Node));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kCifar10Node));
@@ -135,7 +139,8 @@ Status Cifar10Node::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNo
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<Cifar10Node>(dataset_dir, usage, sampler, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cityscapes_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cityscapes_node.cc
index 40f990a0272..e42987ad293 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cityscapes_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cityscapes_node.cc
@@ -40,6 +40,8 @@ CityscapesNode::CityscapesNode(const std::string &dataset_dir, const std::string
 std::shared_ptr<DatasetNode> CityscapesNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<CityscapesNode>(dataset_dir_, usage_, quality_mode_, task_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -127,6 +129,7 @@ Status CityscapesNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["quality_mode"] = quality_mode_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/clue_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/clue_node.cc
index ea5db97c65c..66139df3d35 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/clue_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/clue_node.cc
@@ -40,6 +40,8 @@ CLUENode::CLUENode(const std::vector<std::string> clue_files, std::string task,
 std::shared_ptr<DatasetNode> CLUENode::Copy() {
   auto node =
     std::make_shared<CLUENode>(dataset_files_, task_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -223,6 +225,7 @@ Status CLUENode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size_g
 Status CLUENode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_files_;
   args["task"] = task_;
   args["usage"] = usage_;
@@ -241,6 +244,7 @@ Status CLUENode::to_json(nlohmann::json *out_json) {
 
 Status CLUENode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCLUENode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCLUENode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCLUENode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "task", kCLUENode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kCLUENode));
@@ -258,7 +262,8 @@ Status CLUENode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode>
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<CLUENode>(dataset_files, task, usage, num_samples, shuffle, num_shards, shard_id, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 // Note: The following two functions are common among NonMappableSourceNode and should be promoted to its parent
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cmu_arctic_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cmu_arctic_node.cc
index a2e171627a5..a91a1deac1b 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cmu_arctic_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/cmu_arctic_node.cc
@@ -34,6 +34,8 @@ void CMUArcticNode::Print(std::ostream &out) const { out << Name(); }
 std::shared_ptr<DatasetNode> CMUArcticNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<CMUArcticNode>(dataset_dir_, name_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -102,6 +104,7 @@ Status CMUArcticNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["name"] = name_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/coco_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/coco_node.cc
index 12fa15d94a9..14f6bb85351 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/coco_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/coco_node.cc
@@ -46,6 +46,8 @@ std::shared_ptr<DatasetNode> CocoNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node =
     std::make_shared<CocoNode>(dataset_dir_, annotation_file_, task_, decode_, sampler, cache_, extra_metadata_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -179,6 +181,7 @@ Status CocoNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["annotation_file"] = annotation_file_;
   args["task"] = task_;
@@ -196,6 +199,7 @@ Status CocoNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status CocoNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCocoNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCocoNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kCocoNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "annotation_file", kCocoNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "task", kCocoNode));
@@ -212,7 +216,8 @@ Status CocoNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode>
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   bool extra_metadata = json_obj["extra_metadata"];
   *ds = std::make_shared<CocoNode>(dataset_dir, annotation_file, task, decode, sampler, cache, extra_metadata);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/conll2000_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/conll2000_node.cc
index 885914256a0..1b957597c39 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/conll2000_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/conll2000_node.cc
@@ -46,6 +46,8 @@ CoNLL2000Node::CoNLL2000Node(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> CoNLL2000Node::Copy() {
   auto node =
     std::make_shared<CoNLL2000Node>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -142,6 +144,7 @@ Status CoNLL2000Node::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &s
 Status CoNLL2000Node::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/csv_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/csv_node.cc
index b456bd80e17..367e2fb5d84 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/csv_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/csv_node.cc
@@ -49,6 +49,8 @@ CSVNode::CSVNode(const std::vector<std::string> &csv_files, char field_delim,
 std::shared_ptr<DatasetNode> CSVNode::Copy() {
   auto node = std::make_shared<CSVNode>(dataset_files_, field_delim_, column_defaults_, column_names_, num_samples_,
                                         shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -163,6 +165,7 @@ Status CSVNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size_ge
 Status CSVNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_files"] = dataset_files_;
   args["field_delim"] = std::string(1, field_delim_);
   args["column_names"] = column_names_;
@@ -181,6 +184,7 @@ Status CSVNode::to_json(nlohmann::json *out_json) {
 
 Status CSVNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kCSVNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kCSVNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_files", kCSVNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "field_delim", kCSVNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "column_names", kCSVNode));
@@ -200,7 +204,8 @@ Status CSVNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode>
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<CSVNode>(dataset_files, field_delim.c_str()[0], column_defaults, column_names, num_samples,
                                   shuffle, num_shards, shard_id, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/dbpedia_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/dbpedia_node.cc
index fba36d2cff7..f92ad609829 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/dbpedia_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/dbpedia_node.cc
@@ -46,6 +46,8 @@ DBpediaNode::DBpediaNode(const std::string &dataset_dir, const std::string &usag
 std::shared_ptr<DatasetNode> DBpediaNode::Copy() {
   auto node =
     std::make_shared<DBpediaNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -163,6 +165,7 @@ Status DBpediaNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &siz
 Status DBpediaNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/div2k_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/div2k_node.cc
index 7040202fb12..38891ca4ae0 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/div2k_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/div2k_node.cc
@@ -41,6 +41,8 @@ DIV2KNode::DIV2KNode(const std::string &dataset_dir, const std::string &usage, c
 std::shared_ptr<DatasetNode> DIV2KNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<DIV2KNode>(dataset_dir_, usage_, downgrade_, scale_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -136,6 +138,7 @@ Status DIV2KNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["downgrade"] = downgrade_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/emnist_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/emnist_node.cc
index 020c53f1f9b..ccc56809ba7 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/emnist_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/emnist_node.cc
@@ -33,6 +33,8 @@ EMnistNode::EMnistNode(const std::string &dataset_dir, const std::string &name,
 std::shared_ptr<DatasetNode> EMnistNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<EMnistNode>(dataset_dir_, name_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -105,6 +107,7 @@ Status EMnistNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["name"] = name_;
   args["usage"] = usage_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/en_wik9_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/en_wik9_node.cc
index 51fb4ff4177..712c044d36d 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/en_wik9_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/en_wik9_node.cc
@@ -46,6 +46,8 @@ EnWik9Node::EnWik9Node(const std::string &dataset_dir, int32_t num_samples, Shuf
 
 std::shared_ptr<DatasetNode> EnWik9Node::Copy() {
   auto node = std::make_shared<EnWik9Node>(dataset_dir_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -135,6 +137,7 @@ Status EnWik9Node::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size
 Status EnWik9Node::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["num_samples"] = num_samples_;
   args["shuffle"] = shuffle_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fake_image_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fake_image_node.cc
index 4088e01d825..b99fdbb967f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fake_image_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fake_image_node.cc
@@ -39,6 +39,8 @@ FakeImageNode::FakeImageNode(int32_t num_images, const std::vector<int32_t> &ima
 std::shared_ptr<DatasetNode> FakeImageNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<FakeImageNode>(num_images_, image_size_, num_classes_, base_seed_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -119,7 +121,7 @@ Status FakeImageNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
-
+  args["connector_queue_size"] = connector_que_size_;
   args["num_images"] = num_images_;
   args["image_size"] = image_size_;
   args["num_classes"] = num_classes_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fashion_mnist_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fashion_mnist_node.cc
index 99da401fbdf..a800ed86235 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fashion_mnist_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/fashion_mnist_node.cc
@@ -33,6 +33,8 @@ FashionMnistNode::FashionMnistNode(const std::string &dataset_dir, const std::st
 std::shared_ptr<DatasetNode> FashionMnistNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<FashionMnistNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -100,6 +102,7 @@ Status FashionMnistNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/flickr_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/flickr_node.cc
index 7ff09bcf280..4cf7ee1cb62 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/flickr_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/flickr_node.cc
@@ -42,6 +42,8 @@ FlickrNode::FlickrNode(const std::string &dataset_dir, const std::string &annota
 std::shared_ptr<DatasetNode> FlickrNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<FlickrNode>(dataset_dir_, annotation_file_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -133,6 +135,7 @@ Status FlickrNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["annotation_file"] = annotation_file_;
   args["decode"] = decode_;
@@ -147,6 +150,7 @@ Status FlickrNode::to_json(nlohmann::json *out_json) {
 
 Status FlickrNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kFlickrNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kFlickrNode));
   CHECK_FAIL_RETURN_UNEXPECTED(json_obj.find("dataset_dir") != json_obj.end(), "Failed to find dataset_dir");
   CHECK_FAIL_RETURN_UNEXPECTED(json_obj.find("annotation_file") != json_obj.end(), "Failed to find annotation_file");
   CHECK_FAIL_RETURN_UNEXPECTED(json_obj.find("decode") != json_obj.end(), "Failed to find decode");
@@ -158,7 +162,8 @@ Status FlickrNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNod
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<FlickrNode>(dataset_dir, annotation_file, decode, sampler, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 }  // namespace dataset
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/generator_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/generator_node.cc
index a157baaef85..c130f4992fd 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/generator_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/generator_node.cc
@@ -55,6 +55,8 @@ std::shared_ptr<DatasetNode> GeneratorNode::Copy() {
   } else {
     node = std::make_shared<GeneratorNode>(generator_function_, schema_, source_len_, sampler_, num_parallel_workers_);
   }
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/gtzan_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/gtzan_node.cc
index 888cf7ffce2..7ff244d22a8 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/gtzan_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/gtzan_node.cc
@@ -34,6 +34,8 @@ void GTZANNode::Print(std::ostream &out) const { out << Name(); }
 std::shared_ptr<DatasetNode> GTZANNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<GTZANNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -96,6 +98,7 @@ Status GTZANNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/image_folder_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/image_folder_node.cc
index cb8abe9cac2..c97356336a3 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/image_folder_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/image_folder_node.cc
@@ -48,6 +48,8 @@ std::shared_ptr<DatasetNode> ImageFolderNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node =
     std::make_shared<ImageFolderNode>(dataset_dir_, decode_, sampler, recursive_, exts_, class_indexing_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -115,6 +117,7 @@ Status ImageFolderNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["recursive"] = recursive_;
   args["decode"] = decode_;
@@ -132,6 +135,7 @@ Status ImageFolderNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status ImageFolderNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kImageFolderNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kImageFolderNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kImageFolderNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "decode", kImageFolderNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kImageFolderNode));
@@ -154,7 +158,8 @@ Status ImageFolderNode::from_json(nlohmann::json json_obj, std::shared_ptr<Datas
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<ImageFolderNode>(dataset_dir, decode, sampler, recursive, extension, class_indexing, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/imdb_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/imdb_node.cc
index 35e6584c9c5..3c9278f3da3 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/imdb_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/imdb_node.cc
@@ -38,6 +38,8 @@ IMDBNode::IMDBNode(const std::string &dataset_dir, const std::string &usage, std
 std::shared_ptr<DatasetNode> IMDBNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<IMDBNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -106,6 +108,7 @@ Status IMDBNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
@@ -121,6 +124,7 @@ Status IMDBNode::to_json(nlohmann::json *out_json) {
 Status IMDBNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_UNEXPECTED_IF_NULL(ds);
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kIMDBNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kIMDBNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kIMDBNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kIMDBNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kIMDBNode));
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2016_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2016_node.cc
index d2bb6645777..9d9f9082ab9 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2016_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2016_node.cc
@@ -59,6 +59,8 @@ IWSLT2016Node::IWSLT2016Node(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> IWSLT2016Node::Copy() {
   auto node = std::make_shared<IWSLT2016Node>(dataset_dir_, usage_, language_pair_, valid_set_, test_set_, num_samples_,
                                               shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -157,6 +159,7 @@ Status IWSLT2016Node::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &s
 Status IWSLT2016Node::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["language_pair"] = language_pair_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2017_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2017_node.cc
index 45c122e6a3a..840e1205dbc 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2017_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/iwslt2017_node.cc
@@ -57,6 +57,8 @@ IWSLT2017Node::IWSLT2017Node(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> IWSLT2017Node::Copy() {
   auto node = std::make_shared<IWSLT2017Node>(dataset_dir_, usage_, language_pair_, num_samples_, shuffle_, num_shards_,
                                               shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -150,6 +152,7 @@ Status IWSLT2017Node::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &s
 Status IWSLT2017Node::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["language_pair"] = language_pair_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/kmnist_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/kmnist_node.cc
index b315dab8b37..2c7ffcd6752 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/kmnist_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/kmnist_node.cc
@@ -33,6 +33,8 @@ KMnistNode::KMnistNode(const std::string &dataset_dir, const std::string &usage,
 std::shared_ptr<DatasetNode> KMnistNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<KMnistNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -100,6 +102,7 @@ Status KMnistNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/libri_tts_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/libri_tts_node.cc
index 4b7d6bd7821..c1166045aae 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/libri_tts_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/libri_tts_node.cc
@@ -34,6 +34,8 @@ void LibriTTSNode::Print(std::ostream &out) const { out << Name(); }
 std::shared_ptr<DatasetNode> LibriTTSNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<LibriTTSNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -107,6 +109,7 @@ Status LibriTTSNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/lj_speech_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/lj_speech_node.cc
index a6929c46088..cc129268f21 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/lj_speech_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/lj_speech_node.cc
@@ -30,6 +30,8 @@ LJSpeechNode::LJSpeechNode(const std::string &dataset_dir, std::shared_ptr<Sampl
 std::shared_ptr<DatasetNode> LJSpeechNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<LJSpeechNode>(dataset_dir_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -104,6 +106,7 @@ Status LJSpeechNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   if (cache_ != nullptr) {
     nlohmann::json cache_args;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/manifest_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/manifest_node.cc
index 116e6d81118..207382d63f9 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/manifest_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/manifest_node.cc
@@ -45,6 +45,8 @@ ManifestNode::ManifestNode(const std::string &dataset_file, const std::string &u
 std::shared_ptr<DatasetNode> ManifestNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<ManifestNode>(dataset_file_, usage_, sampler, class_index_, decode_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -138,6 +140,7 @@ Status ManifestNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_file"] = dataset_file_;
   args["usage"] = usage_;
   args["class_indexing"] = class_index_;
@@ -155,6 +158,7 @@ Status ManifestNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status ManifestNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kManifestNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kManifestNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_file", kManifestNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kManifestNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kManifestNode));
@@ -175,7 +179,8 @@ Status ManifestNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetN
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<ManifestNode>(dataset_file, usage, sampler, class_indexing, decode, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/mnist_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/mnist_node.cc
index b29535e2a1e..241b7fa48c0 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/mnist_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/mnist_node.cc
@@ -37,6 +37,8 @@ MnistNode::MnistNode(std::string dataset_dir, std::string usage, std::shared_ptr
 std::shared_ptr<DatasetNode> MnistNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<MnistNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -62,7 +64,6 @@ Status MnistNode::Build(std::vector<std::shared_ptr<DatasetOp>> *const node_ops)
     schema->AddColumn(ColDescriptor("label", DataType(DataType::DE_UINT32), TensorImpl::kFlexible, 0, &scalar)));
   std::shared_ptr<SamplerRT> sampler_rt = nullptr;
   RETURN_IF_NOT_OK(sampler_->SamplerBuild(&sampler_rt));
-
   auto op = std::make_shared<MnistOp>(usage_, num_workers_, dataset_dir_, connector_que_size_, std::move(schema),
                                       std::move(sampler_rt));
   op->SetTotalRepeats(GetTotalRepeats());
@@ -104,6 +105,7 @@ Status MnistNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
@@ -118,6 +120,7 @@ Status MnistNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status MnistNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kMnistNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "sampler", kMnistNode));
@@ -129,6 +132,7 @@ Status MnistNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<MnistNode>(dataset_dir, usage, sampler, cache);
   (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/multi30k_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/multi30k_node.cc
index bfe43688b0f..6edf7a14321 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/multi30k_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/multi30k_node.cc
@@ -50,6 +50,8 @@ void Multi30kNode::Print(std::ostream &out) const {
 std::shared_ptr<DatasetNode> Multi30kNode::Copy() {
   auto node = std::make_shared<Multi30kNode>(dataset_dir_, usage_, language_pair_, num_samples_, shuffle_, num_shards_,
                                              shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -139,6 +141,7 @@ Status Multi30kNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &si
 Status Multi30kNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["num_samples"] = num_samples_;
   args["shuffle"] = shuffle_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/penn_treebank_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/penn_treebank_node.cc
index 23680314b73..a25ebd41090 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/penn_treebank_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/penn_treebank_node.cc
@@ -49,6 +49,8 @@ PennTreebankNode::PennTreebankNode(const std::string &dataset_dir, const std::st
 std::shared_ptr<DatasetNode> PennTreebankNode::Copy() {
   auto node =
     std::make_shared<PennTreebankNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -131,6 +133,7 @@ Status PennTreebankNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter>
 Status PennTreebankNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/photo_tour_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/photo_tour_node.cc
index d716484e1f1..6ef4b4c4778 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/photo_tour_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/photo_tour_node.cc
@@ -33,6 +33,8 @@ PhotoTourNode::PhotoTourNode(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> PhotoTourNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<PhotoTourNode>(dataset_dir_, name_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -116,6 +118,7 @@ Status PhotoTourNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["name"] = name_;
   args["usage"] = usage_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/places365_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/places365_node.cc
index 30bd48b4228..b233615ce14 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/places365_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/places365_node.cc
@@ -38,6 +38,8 @@ Places365Node::Places365Node(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> Places365Node::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<Places365Node>(dataset_dir_, usage_, small_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -103,6 +105,7 @@ Status Places365Node::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["small"] = small_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/qmnist_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/qmnist_node.cc
index 3e0b7ce89b1..bff14ba2c8f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/qmnist_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/qmnist_node.cc
@@ -40,6 +40,8 @@ QMnistNode::QMnistNode(const std::string &dataset_dir, const std::string &usage,
 std::shared_ptr<DatasetNode> QMnistNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<QMnistNode>(dataset_dir_, usage_, compat_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -114,6 +116,7 @@ Status QMnistNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["compat"] = compat_;
@@ -129,6 +132,7 @@ Status QMnistNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status QMnistNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kQMnistNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kQMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kQMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kQMnistNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "compat", kQMnistNode));
@@ -141,7 +145,8 @@ Status QMnistNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNod
   std::shared_ptr<DatasetCache> cache = nullptr;
   RETURN_IF_NOT_OK(DatasetCache::from_json(json_obj, &cache));
   *ds = std::make_shared<QMnistNode>(dataset_dir, usage, compat, sampler, cache);
-  (*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetNumWorkers(json_obj["num_parallel_workers"]);
+  (void)(*ds)->SetConnectorQueueSize(json_obj["connector_queue_size"]);
   return Status::OK();
 }
 #endif
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sbu_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sbu_node.cc
index 0f2d3b6b0c7..65eedd89cef 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sbu_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sbu_node.cc
@@ -33,6 +33,8 @@ SBUNode::SBUNode(const std::string &dataset_dir, bool decode, const std::shared_
 std::shared_ptr<DatasetNode> SBUNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<SBUNode>(dataset_dir_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -108,6 +110,7 @@ Status SBUNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["decode"] = decode_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/semeion_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/semeion_node.cc
index d52e600422a..54c06024348 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/semeion_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/semeion_node.cc
@@ -31,6 +31,8 @@ SemeionNode::SemeionNode(const std::string &dataset_dir, const std::shared_ptr<S
 std::shared_ptr<DatasetNode> SemeionNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<SemeionNode>(dataset_dir_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -98,6 +100,7 @@ Status SemeionNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   if (cache_ != nullptr) {
     nlohmann::json cache_args;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sogou_news_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sogou_news_node.cc
index 317eee06972..57e8f2a7d44 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sogou_news_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/sogou_news_node.cc
@@ -46,6 +46,8 @@ SogouNewsNode::SogouNewsNode(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> SogouNewsNode::Copy() {
   auto node =
     std::make_shared<SogouNewsNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -136,6 +138,7 @@ Status SogouNewsNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &s
 Status SogouNewsNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/speech_commands_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/speech_commands_node.cc
index 2e987979eeb..e887c6cd4fc 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/speech_commands_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/speech_commands_node.cc
@@ -28,6 +28,8 @@ SpeechCommandsNode::SpeechCommandsNode(const std::string &dataset_dir, const std
 std::shared_ptr<DatasetNode> SpeechCommandsNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<SpeechCommandsNode>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -104,6 +106,7 @@ Status SpeechCommandsNode::to_json(nlohmann::json *out_json) {
   args["sampler"] = sampler_args;
   args["usage"] = usage_;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   if (cache_ != nullptr) {
     nlohmann::json cache_args;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/squad_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/squad_node.cc
index f4ad050aa70..3374c4aebfc 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/squad_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/squad_node.cc
@@ -46,6 +46,8 @@ void SQuADNode::Print(std::ostream &out) const {
 
 std::shared_ptr<DatasetNode> SQuADNode::Copy() {
   auto node = std::make_shared<SQuADNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -137,6 +139,7 @@ Status SQuADNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size_
 Status SQuADNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/stl10_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/stl10_node.cc
index 9eaa374d693..5d3b4364437 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/stl10_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/stl10_node.cc
@@ -33,6 +33,8 @@ STL10Node::STL10Node(const std::string &dataset_dir, const std::string &usage, s
 std::shared_ptr<DatasetNode> STL10Node::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<STL10Node>(dataset_dir_, usage_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -107,6 +109,7 @@ Status STL10Node::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   if (cache_ != nullptr) {
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tedlium_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tedlium_node.cc
index 212979e695c..c6195225fe4 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tedlium_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tedlium_node.cc
@@ -37,6 +37,8 @@ TedliumNode::TedliumNode(const std::string &dataset_dir, const std::string &rele
 std::shared_ptr<DatasetNode> TedliumNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<TedliumNode>(dataset_dir_, release_, usage_, extensions_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -136,6 +138,7 @@ Status TedliumNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["release"] = release_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/text_file_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/text_file_node.cc
index 5de7ffd2e67..1a30bde4c35 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/text_file_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/text_file_node.cc
@@ -43,6 +43,8 @@ TextFileNode::TextFileNode(std::vector<std::string> dataset_files, int32_t num_s
 
 std::shared_ptr<DatasetNode> TextFileNode::Copy() {
   auto node = std::make_shared<TextFileNode>(dataset_files_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -132,6 +134,7 @@ Status TextFileNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &si
 Status TextFileNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_files"] = dataset_files_;
   args["num_samples"] = num_samples_;
   args["shuffle"] = shuffle_;
@@ -148,6 +151,7 @@ Status TextFileNode::to_json(nlohmann::json *out_json) {
 
 Status TextFileNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kTextFileNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kTextFileNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_files", kTextFileNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_samples", kTextFileNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "shuffle", kTextFileNode));
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tf_record_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tf_record_node.cc
index 15f749f3130..75c6f67c034 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tf_record_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/tf_record_node.cc
@@ -41,6 +41,8 @@ std::shared_ptr<DatasetNode> TFRecordNode::Copy() {
     node = std::make_shared<TFRecordNode>(dataset_files_, schema_path_, columns_list_, num_samples_, shuffle_,
                                           num_shards_, shard_id_, shard_equal_rows_, cache_);
   }
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -177,6 +179,7 @@ Status TFRecordNode::to_json(nlohmann::json *out_json) {
   RETURN_UNEXPECTED_IF_NULL(out_json);
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_files"] = dataset_files_;
   args["columns_list"] = columns_list_;
   args["num_samples"] = num_samples_;
@@ -206,6 +209,7 @@ Status TFRecordNode::to_json(nlohmann::json *out_json) {
 
 Status TFRecordNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kTFRecordNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_files", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "columns_list", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_samples", kTFRecordNode));
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/udpos_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/udpos_node.cc
index b91900efbcf..b6a6547af6f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/udpos_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/udpos_node.cc
@@ -44,6 +44,8 @@ UDPOSNode::UDPOSNode(const std::string &dataset_dir, const std::string &usage, i
 
 std::shared_ptr<DatasetNode> UDPOSNode::Copy() {
   auto node = std::make_shared<UDPOSNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -136,6 +138,7 @@ Status UDPOSNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size_
 Status UDPOSNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/usps_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/usps_node.cc
index 599009f6922..aad0f04c0a1 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/usps_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/usps_node.cc
@@ -45,6 +45,8 @@ USPSNode::USPSNode(const std::string &dataset_dir, const std::string &usage, int
 
 std::shared_ptr<DatasetNode> USPSNode::Copy() {
   auto node = std::make_shared<USPSNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -125,6 +127,7 @@ Status USPSNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &size_g
 Status USPSNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/voc_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/voc_node.cc
index c1e485c2513..8cefb2e901a 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/voc_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/voc_node.cc
@@ -48,6 +48,8 @@ std::shared_ptr<DatasetNode> VOCNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node =
     std::make_shared<VOCNode>(dataset_dir_, task_, usage_, class_index_, decode_, sampler, cache_, extra_metadata_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -167,6 +169,7 @@ Status VOCNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["task"] = task_;
   args["usage"] = usage_;
@@ -185,6 +188,7 @@ Status VOCNode::to_json(nlohmann::json *out_json) {
 #ifndef ENABLE_ANDROID
 Status VOCNode::from_json(nlohmann::json json_obj, std::shared_ptr<DatasetNode> *ds) {
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "num_parallel_workers", kTFRecordNode));
+  RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "connector_queue_size", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "dataset_dir", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "task", kTFRecordNode));
   RETURN_IF_NOT_OK(ValidateParamInJson(json_obj, "usage", kTFRecordNode));
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wider_face_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wider_face_node.cc
index 094f78422de..9e790c35b72 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wider_face_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wider_face_node.cc
@@ -36,6 +36,8 @@ WIDERFaceNode::WIDERFaceNode(const std::string &dataset_dir, const std::string &
 std::shared_ptr<DatasetNode> WIDERFaceNode::Copy() {
   std::shared_ptr<SamplerObj> sampler = (sampler_ == nullptr) ? nullptr : sampler_->SamplerCopy();
   auto node = std::make_shared<WIDERFaceNode>(dataset_dir_, usage_, decode_, sampler, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -116,6 +118,7 @@ Status WIDERFaceNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["decode"] = decode_;
   args["usage"] = usage_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wiki_text_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wiki_text_node.cc
index 2bc014d7775..5e2503851bd 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wiki_text_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/wiki_text_node.cc
@@ -49,6 +49,8 @@ WikiTextNode::WikiTextNode(const std::string &dataset_dir, const std::string &us
 std::shared_ptr<DatasetNode> WikiTextNode::Copy() {
   auto node =
     std::make_shared<WikiTextNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -131,6 +133,7 @@ Status WikiTextNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &si
 Status WikiTextNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yahoo_answers_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yahoo_answers_node.cc
index 0036d6d4832..4a81de906b8 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yahoo_answers_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yahoo_answers_node.cc
@@ -47,6 +47,8 @@ YahooAnswersNode::YahooAnswersNode(const std::string &dataset_dir, const std::st
 std::shared_ptr<DatasetNode> YahooAnswersNode::Copy() {
   auto node =
     std::make_shared<YahooAnswersNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -170,6 +172,7 @@ Status YahooAnswersNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter>
 Status YahooAnswersNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yelp_review_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yelp_review_node.cc
index 1ed2d7aabdd..eefa111f0ba 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yelp_review_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yelp_review_node.cc
@@ -47,6 +47,8 @@ YelpReviewNode::YelpReviewNode(const std::string &dataset_dir, const std::string
 std::shared_ptr<DatasetNode> YelpReviewNode::Copy() {
   auto node =
     std::make_shared<YelpReviewNode>(dataset_dir_, usage_, num_samples_, shuffle_, num_shards_, shard_id_, cache_);
+  node->SetNumWorkers(num_workers_);
+  node->SetConnectorQueueSize(connector_que_size_);
   return node;
 }
 
@@ -134,6 +136,7 @@ Status YelpReviewNode::GetDatasetSize(const std::shared_ptr<DatasetSizeGetter> &
 Status YelpReviewNode::to_json(nlohmann::json *out_json) {
   nlohmann::json args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   args["usage"] = usage_;
   args["num_samples"] = num_samples_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yes_no_node.cc b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yes_no_node.cc
index bee2291bd45..91ed4c8a90f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yes_no_node.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/ir/datasetops/source/yes_no_node.cc
@@ -102,6 +102,7 @@ Status YesNoNode::to_json(nlohmann::json *out_json) {
   RETURN_IF_NOT_OK(sampler_->to_json(&sampler_args));
   args["sampler"] = sampler_args;
   args["num_parallel_workers"] = num_workers_;
+  args["connector_queue_size"] = connector_que_size_;
   args["dataset_dir"] = dataset_dir_;
   if (cache_ != nullptr) {
     nlohmann::json cache_args;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/opt/pre/deep_copy_pass.cc b/mindspore/ccsrc/minddata/dataset/engine/opt/pre/deep_copy_pass.cc
index b1790e7bf92..76b85bbe5d9 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/opt/pre/deep_copy_pass.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/opt/pre/deep_copy_pass.cc
@@ -48,10 +48,11 @@ Status DeepCopyPass::Visit(std::shared_ptr<DatasetNode> node, bool *const modifi
 
   // Clone a new copy of this node
   std::shared_ptr<DatasetNode> new_node = node->Copy();
-  // Temporary fix to set the num_workers to each cloned node.
+  // Temporary fix to set the num_workers and connector_queue_size to each cloned node.
   // This can be improved by adding a new method in the base class DatasetNode to transfer the properties to
   // the cloned node. Each derived class's Copy() will need to include this method.
   new_node->SetNumWorkers(node->NumWorkers());
+  new_node->SetConnectorQueueSize(node->ConnectorQueueSize());
   // This method below assumes a DFS walk and from the first child to the last child.
   // Future: A more robust implementation that does not depend on the above assumption.
   RETURN_IF_NOT_OK(parent_->AppendChild(new_node));
diff --git a/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.cc b/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.cc
index 868079da2f2..06524d42edb 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.cc
@@ -21,10 +21,11 @@
 #include <memory>
 #include <utility>
 #include <vector>
+#include <string>
 #ifndef ENABLE_ANDROID
 #include "minddata/dataset/engine/datasetops/source/nonmappable_leaf_op.h"
+#include "minddata/dataset/engine/serdes.h"
 #endif
-
 #include "minddata/dataset/util/task_manager.h"
 
 namespace mindspore {
@@ -53,8 +54,22 @@ Status AutoTune::Main() {
   } else if (step_gap_ == 0) {
     mode_ = AutoTuneMode::kAutoTuneModeEpoch;
   }
+  const bool nodes_offloaded = !tree_adapter_->GetOffloadJson().empty();
+  if (nodes_offloaded) {
+    // When nodes are offloaded they are removed from the optimized IR tree.
+    // Serializing the optimized IR Tree and then deserializing will not work.
+    MS_LOG(WARNING) << "Some nodes have been offloaded. AutoTune is unable to write the autotune configuration to "
+                       "disk. Disable offload to prevent this from happening.";
+  }
+  bool output_final_config = save_autoconfig_ && !nodes_offloaded;
+  bool output_intermediate_config = save_intermediate_autoconfig_ && output_final_config;
   Status rc;
+  int loop_cnt = 0;
   while (!this_thread::is_interrupted() && !(tree_adapter_->tree_->isFinished())) {
+#ifndef ENABLE_ANDROID
+    auto last_epoch = cur_epoch_;
+    auto last_step = cur_step_;
+#endif
     if (mode_ == AutoTuneMode::kAutoTuneModeEpoch) {
       rc = RunIterationEpoch();
     } else if (mode_ == AutoTuneMode::kAutoTuneModeStep) {
@@ -65,6 +80,16 @@ Status AutoTune::Main() {
       RETURN_IF_NOT_OK(profiling_manager_->Stop());
       break;
     }
+#ifndef ENABLE_ANDROID
+    if (last_epoch != cur_epoch_ || last_step != cur_step_) {
+      if (output_intermediate_config &&
+          (SaveAutotuneConfig(tree_adapter_->tree_->GetUniqueId() + "_autotune_" + std::to_string(loop_cnt) + ".json")
+             .IsError())) {
+        MS_LOG(WARNING) << "Failed to write current iteration autotune configuration to disk";
+      }
+      ++loop_cnt;
+    }
+#endif
     rc = cv_.WaitFor(&_lock, GlobalContext::config_manager()->monitor_sampling_interval());
     // the thread may be interrupted for tree termination when waiting (we should not report error in this case)
     if (rc.IsError() && rc != StatusCode::kMDInterrupted) {
@@ -79,11 +104,43 @@ Status AutoTune::Main() {
                << "mindspore.dataset.config.set_num_parallel_workers";
   MS_LOG(INFO) << "Suggest to choose maximum prefetch_size from tuned result and set by global setting API: "
                << "mindspore.dataset.config.set_prefetch_size";
+#ifndef ENABLE_ANDROID
+  if (output_final_config && (SaveAutotuneConfig(autotune_json_filepath_).IsError())) {
+    MS_LOG(WARNING) << "Failed to write final autotune configuration to disk";
+  }
+#endif
   return Status::OK();
 }
 
-void AutoTune::PrintTreeConfiguration() {
-  ExecutionTree *tree = tree_adapter_->tree_.get();
+#ifndef ENABLE_ANDROID
+Status AutoTune::SaveAutotuneConfig(const std::string &file_name) {
+  RETURN_IF_NOT_OK(SetAutotuneConfigJson());
+  // The Execution Tree is built by visiting the optimized IR Tree in DFS order.
+  // So we visit the optimized IR tree in DFS order and try to match each IR node with its corresponding dataset op.
+  RETURN_IF_NOT_OK(Serdes::UpdateOptimizedIRTreeJSON(&autotune_config_json_, ops_));
+  RETURN_IF_NOT_OK(Serdes::SaveJSONToFile(autotune_config_json_, file_name));
+  return Status::OK();
+}
+
+Status AutoTune::SetAutotuneConfigJson() {
+  if (autotune_config_json_.empty()) {
+    nlohmann::json out_json;
+    RETURN_IF_NOT_OK(Serdes::SaveToJSON(tree_adapter_->RootIRNode(), "", &out_json));
+    // We do not want to serialize TransferNode/DeviceQueueOp
+    if (out_json["op_type"] == kTransferNode) {
+      CHECK_FAIL_RETURN_UNEXPECTED(
+        out_json["children"].size() == 1,
+        "Expected Transfer node to have exactly 1 child but it has " + std::to_string(out_json["children"].size()));
+      out_json = out_json["children"][0];
+    }
+    autotune_config_json_ = std::move(out_json);
+  }
+  return Status::OK();
+}
+#endif
+
+void AutoTune::PrintTreeConfiguration() const {
+  ExecutionTree const *tree = tree_adapter_->tree_.get();
   for (auto itr = tree->begin(); itr != tree->end(); itr++) {
     if (!itr->inlined() && itr->Name() != "DeviceQueueOp") {
       MS_LOG(INFO) << itr->NameWithID() << " num_parallel_workers: " << itr->NumWorkers()
@@ -106,7 +163,7 @@ Status AutoTune::LaunchThread() {
 }
 
 Status AutoTune::CollectOpsInfo() {
-  ExecutionTree *tree = tree_adapter_->tree_.get();
+  ExecutionTree const *tree = tree_adapter_->tree_.get();
   RETURN_UNEXPECTED_IF_NULL(tree);
   for (auto itr = tree->begin(); itr != tree->end(); ++itr) {
     ops_[itr->id()] = itr.get();
diff --git a/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.h b/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.h
index 3246189863b..2bdeb09d65f 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/perf/auto_tune.h
@@ -51,7 +51,18 @@ class AutoTune {
   Status Main();
 
   /// \brief Helper to print the tree configuration
-  void PrintTreeConfiguration();
+  void PrintTreeConfiguration() const;
+
+#ifndef ENABLE_ANDROID
+  /// \brief Serialize the dataset and save the AT config (workers and queue size) to a json file
+  /// \param file_name Name of the file
+  /// \return Status object
+  Status SaveAutotuneConfig(const std::string &file_name);
+
+  /// Setter for autotune_config_json_
+  /// \return Status code
+  Status SetAutotuneConfigJson();
+#endif
 
   /// Function to collect info from the tree
   /// \return Status code
@@ -195,8 +206,14 @@ class AutoTune {
   /// True if should save AutoTune configuration
   bool save_autoconfig_;
 
+  /// Flag to enable saving of intermediate autotune config to disk
+  bool save_intermediate_autoconfig_{false};
+
   /// Filepath name of the final AutoTune Configuration JSON file
   std::string autotune_json_filepath_;
+
+  /// Serialized json of the optimized ir tree that holds the updated configuration (workers and queue size)
+  nlohmann::json autotune_config_json_;
 };
 }  // namespace dataset
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/minddata/dataset/engine/serdes.cc b/mindspore/ccsrc/minddata/dataset/engine/serdes.cc
index 08ac35693c9..f0f1bc4904e 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/serdes.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/serdes.cc
@@ -30,6 +30,13 @@ std::map<std::string, Status (*)(nlohmann::json json_obj, std::shared_ptr<Tensor
 Status Serdes::SaveToJSON(std::shared_ptr<DatasetNode> node, const std::string &filename, nlohmann::json *out_json) {
   RETURN_UNEXPECTED_IF_NULL(node);
   RETURN_UNEXPECTED_IF_NULL(out_json);
+  // If an optimized IR Tree is sent (use-case for MD AutoTune), ignore Top and EpochCtrl nodes
+  if (node->Name() == "Top" || node->Name() == "EpochCtrl") {
+    CHECK_FAIL_RETURN_UNEXPECTED(
+      node->Children().size() == 1,
+      "Expected " + node->Name() + " to have exactly 1 child but it has " + std::to_string(node->Children().size()));
+    return SaveToJSON(node->Children()[0], filename, out_json);
+  }
   // Dump attributes of current node to json string
   nlohmann::json args;
   RETURN_IF_NOT_OK(node->to_json(&args));
@@ -55,7 +62,7 @@ Status Serdes::SaveToJSON(std::shared_ptr<DatasetNode> node, const std::string &
   return Status::OK();
 }
 
-Status Serdes::SaveJSONToFile(nlohmann::json json_string, const std::string &file_name) {
+Status Serdes::SaveJSONToFile(const nlohmann::json &json_string, const std::string &file_name) {
   try {
     std::optional<std::string> dir = "";
     std::optional<std::string> local_file_name = "";
@@ -116,7 +123,7 @@ Status Serdes::ConstructPipeline(nlohmann::json json_obj, std::shared_ptr<Datase
     RETURN_IF_NOT_OK(CreateNode(child_ds, json_obj, ds));
   } else {
     std::vector<std::shared_ptr<DatasetNode>> datasets;
-    for (auto child_json_obj : json_obj["children"]) {
+    for (const auto &child_json_obj : json_obj["children"]) {
       RETURN_IF_NOT_OK(ConstructPipeline(child_json_obj, &child_ds));
       datasets.push_back(child_ds);
     }
@@ -380,6 +387,64 @@ Status Serdes::ParseMindIRPreprocess(const std::vector<std::string> &map_json_st
   return Status::OK();
 }
 
+Status Serdes::UpdateOptimizedIRTreeJSON(nlohmann::json *serialized_json,
+                                         const std::map<int32_t, std::shared_ptr<DatasetOp>> &op_map) {
+  RETURN_UNEXPECTED_IF_NULL(serialized_json);
+  int32_t op_id = 0;
+  return RecurseUpdateOptimizedIRTreeJSON(serialized_json, &op_id, op_map);
+}
+
+bool IsDatasetOpMatchIRNode(std::string_view ir_node_name, std::string_view dataset_op_name) {
+  // Helper function to match IR Node name to its dataset op name
+  if (ir_node_name == kSyncWaitNode) {
+    return dataset_op_name == kBarrierOp;
+  } else if (ir_node_name == kCifar10Node || ir_node_name == kCifar100Node) {
+    return dataset_op_name == "CifarOp";
+  } else if (ir_node_name == kMindDataNode) {
+    return dataset_op_name == "MindRecordOp";
+  } else if (ir_node_name == kRandomNode) {
+    return dataset_op_name == "RandomDataOp";
+  } else if (ir_node_name == kTFRecordNode) {
+    return dataset_op_name == "TFReaderOp";
+  } else if (ir_node_name == kIWSLT2016Node || ir_node_name == kIWSLT2017Node) {
+    return dataset_op_name == "IWSLTOp";
+  } else {
+    // Generic way of matching, special cases handled above. Special cases will evolve over time.
+    return ir_node_name.substr(0, ir_node_name.find("Dataset")) ==
+           dataset_op_name.substr(0, dataset_op_name.find("Op"));
+  }
+}
+
+Status Serdes::RecurseUpdateOptimizedIRTreeJSON(nlohmann::json *serialized_json, int32_t *op_id,
+                                                const std::map<int32_t, std::shared_ptr<DatasetOp>> &op_map) {
+  RETURN_UNEXPECTED_IF_NULL(serialized_json);
+  RETURN_UNEXPECTED_IF_NULL(op_id);
+
+  std::string ir_node_name = (*serialized_json)["op_type"];
+  MS_LOG(INFO) << "Visiting IR Node: " << ir_node_name;
+  // Each IR Node should have a corresponding dataset node in the execution tree but the reverse is not necessarily true
+  while (!IsDatasetOpMatchIRNode(ir_node_name, op_map.find(*op_id)->second->Name())) {
+    // During the construction of execution tree, extra dataset nodes may have been inserted
+    // Skip dataset ops unless we get to the expected node
+    MS_LOG(INFO) << "\tSkipping dataset op: " << op_map.find(*op_id)->second->NameWithID();
+    ++(*op_id);
+    CHECK_FAIL_RETURN_UNEXPECTED(*op_id < op_map.size(), "op_id is out of bounds");
+  }
+  MS_LOG(INFO) << "\tMatch found for IR Node: " << ir_node_name
+               << " with dataset op: " << op_map.find(*op_id)->second->NameWithID();
+  if (!op_map.find(*op_id)->second->inlined() && serialized_json->contains("num_parallel_workers") &&
+      serialized_json->contains("connector_queue_size")) {
+    (*serialized_json)["num_parallel_workers"] = op_map.find(*op_id)->second->NumWorkers();
+    (*serialized_json)["connector_queue_size"] = op_map.find(*op_id)->second->ConnectorCapacity();
+  }
+  ++(*op_id);
+  auto num_children = (*serialized_json)["children"].size();
+  for (int i = 0; i < num_children; ++i) {
+    RETURN_IF_NOT_OK(RecurseUpdateOptimizedIRTreeJSON(&(*serialized_json)["children"][i], op_id, op_map));
+  }
+  return Status::OK();
+}
+
 // In the current stage, there is a cyclic dependency between libmindspore.so and c_dataengine.so,
 // we make a C function here and dlopen by libminspore.so to avoid linking explicitly,
 // will be fix after decouling libminspore.so into multi submodules
diff --git a/mindspore/ccsrc/minddata/dataset/engine/serdes.h b/mindspore/ccsrc/minddata/dataset/engine/serdes.h
index 1e6d1ba657d..3321bccc8e8 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/serdes.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/serdes.h
@@ -154,6 +154,13 @@ class Serdes {
   /// \return Status The status code returned
   static Status SaveToJSON(std::shared_ptr<DatasetNode> node, const std::string &filename, nlohmann::json *out_json);
 
+  /// \brief Function to update the parameters [num_parallel_workers, connector_queue_size] in the serialized JSON
+  /// object of the optimized IR tree
+  /// \param[in, out] serialized_json The optimized ir tree json node
+  /// \param[in] op_map An ID to DatasetOp mapping
+  static Status UpdateOptimizedIRTreeJSON(nlohmann::json *serialized_json,
+                                          const std::map<int32_t, std::shared_ptr<DatasetOp>> &op_map);
+
   /// \brief function to de-serialize JSON file to IR tree
   /// \param[in] json_filepath input path of json file
   /// \param[out] ds The deserialized dataset
@@ -185,13 +192,13 @@ class Serdes {
   static Status ParseMindIRPreprocess(const std::vector<std::string> &map_json_string,
                                       std::vector<std::shared_ptr<mindspore::dataset::Execute>> *data_graph);
 
- protected:
   /// \brief Helper function to save JSON to a file
   /// \param[in] json_string The JSON string to be saved to the file
   /// \param[in] file_name The file name
   /// \return Status The status code returned
-  static Status SaveJSONToFile(nlohmann::json json_string, const std::string &file_name);
+  static Status SaveJSONToFile(const nlohmann::json &json_string, const std::string &file_name);
 
+ protected:
   /// \brief Function to determine type of the node - dataset node if no dataset exists or operation node
   /// \param[in] child_ds children datasets that is already created
   /// \param[in] json_obj json object to read out type of the node
@@ -221,6 +228,14 @@ class Serdes {
   static std::map<std::string, Status (*)(nlohmann::json json_obj, std::shared_ptr<TensorOperation> *operation)>
   InitializeFuncPtr();
 
+  /// \brief Helper function to perform recursive DFS on the optimized IR tree and to match each IR node with its
+  /// corresponding dataset op
+  /// \param [in, out] serialized_json The optimized ir tree json node
+  /// \param [in, out] op_id The id in execution tree from where to continue the IR Node - DatasetOp matching search
+  /// \param [in] op_map An ID to DatasetOp mapping
+  static Status RecurseUpdateOptimizedIRTreeJSON(nlohmann::json *serialized_json, int32_t *op_id,
+                                                 const std::map<int32_t, std::shared_ptr<DatasetOp>> &op_map);
+
  private:
   static std::map<std::string, Status (*)(nlohmann::json json_obj, std::shared_ptr<TensorOperation> *operation)>
     func_ptr_;
diff --git a/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.cc b/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.cc
index 592d466fb2f..2ae699105dd 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.cc
+++ b/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.cc
@@ -168,14 +168,11 @@ Status TreeAdapter::Build(std::shared_ptr<DatasetNode> root_ir) {
   RETURN_IF_NOT_OK(BuildExecutionTreeRecur(root_ir->Children()[0], &root_op));
   RETURN_IF_NOT_OK(tree_->AssignRoot(root_op));
 
-  // Note: We will gradually move the pre pass, optimizer pass, and post pass
-  //       on ExecutionTree to perform on IR tree.
   // Prepare the tree
   RETURN_IF_NOT_OK(tree_->Prepare());
 
   // After the tree is prepared, the col_name_id_map can safely be obtained
   column_name_map_ = tree_->root()->column_name_id_map();
-
   return Status::OK();
 }
 
@@ -219,7 +216,6 @@ Status TreeAdapter::Compile(std::shared_ptr<DatasetNode> input_ir, int32_t num_e
 
   RETURN_IF_NOT_OK(Build(root_ir_));
   tree_state_ = kCompileStateReady;
-
   return Status::OK();
 }
 
diff --git a/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.h b/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.h
index 41ddb4abd1f..038c4499dfc 100644
--- a/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.h
+++ b/mindspore/ccsrc/minddata/dataset/engine/tree_adapter.h
@@ -62,6 +62,8 @@ class TreeAdapter {
   // Return the root node of the IR after cloned from the parsed IR tree
   std::shared_ptr<DatasetNode> RootIRNode() const { return root_ir_; }
 
+  const ExecutionTree *GetExecutionTree() const { return tree_.get(); }
+
   // This is the main method TreeConsumer uses to interact with TreeAdapter
   // 1. GetNext will Launch() the ExeTree on its first call by iterator (tree is already prepared)
   // 2. GetNext will return empty row when eoe/eof is obtained
@@ -87,7 +89,6 @@ class TreeAdapter {
 
   // Return Offload Json
   nlohmann::json GetOffloadJson();
-
 #ifndef ENABLE_SECURITY
   /// \brief Setter for Profiling Manager
   Status SetProfilingManagerPtr(std::shared_ptr<ProfilingManager> profiling_manager,
@@ -119,8 +120,8 @@ class TreeAdapter {
 
   std::unordered_map<std::string, int32_t> column_name_map_;
   std::shared_ptr<DatasetNode> root_ir_;
-  std::unique_ptr<ExecutionTree> tree_;  // current connector capacity of root op, used for profiling
-  bool optimize_;                        // Flag to enable optional optimization pass
+  std::unique_ptr<ExecutionTree> tree_;
+  bool optimize_;  // Flag to enable optional optimization pass
 #ifndef ENABLE_SECURITY
   std::shared_ptr<ProfilingManager> profiling_manager_;  // Profiling manager
   std::shared_ptr<DatasetIteratorTracing> tracing_;      // trace profiling data
diff --git a/tests/st/dataset/test_gpu_autotune.py b/tests/st/dataset/test_gpu_autotune.py
index 1099b76ae7f..04ed8391ae1 100644
--- a/tests/st/dataset/test_gpu_autotune.py
+++ b/tests/st/dataset/test_gpu_autotune.py
@@ -45,7 +45,7 @@ def create_model():
     return model_simple
 
 
-def create_dataset(data_path, batch_size=32, repeat_size=1, num_parallel_workers=1):
+def create_dataset(data_path, batch_size=32, num_parallel_workers=1):
     """
     Create dataset for train or test
     """
@@ -71,12 +71,7 @@ def create_dataset(data_path, batch_size=32, repeat_size=1, num_parallel_workers
     mnist_ds = mnist_ds.map(operations=rescale_op, input_columns="image", num_parallel_workers=num_parallel_workers)
     mnist_ds = mnist_ds.map(operations=rescale_nml_op, input_columns="image", num_parallel_workers=num_parallel_workers)
     mnist_ds = mnist_ds.map(operations=hwc2chw_op, input_columns="image", num_parallel_workers=num_parallel_workers)
-
-    # Apply DatasetOps
-    buffer_size = 10000
-    mnist_ds = mnist_ds.shuffle(buffer_size=buffer_size)
     mnist_ds = mnist_ds.batch(batch_size, drop_remainder=True)
-    mnist_ds = mnist_ds.repeat(repeat_size)
 
     return mnist_ds
 
@@ -85,29 +80,44 @@ def create_dataset(data_path, batch_size=32, repeat_size=1, num_parallel_workers
 @pytest.mark.platform_x86_gpu_training
 @pytest.mark.env_onecard
 @pytest.mark.forked
-def test_autotune_train_simple_model():
+def test_autotune_train_simple_model(tmp_path):
     """
     Feature: Dataset AutoTune
-    Description: Test Dataset AutoTune for Training of a Simple Model
-    Expectation: Training completes successfully
+    Description: Test Dataset AutoTune for training of a simple model and deserialize the written at config file
+    Expectation: Training and data deserialization completes successfully
 
     """
     original_seed = ds.config.get_seed()
     set_seed(1)
     context.set_context(mode=context.GRAPH_MODE, device_target="GPU")
     context.set_context(enable_graph_kernel=True)
+    at_config_filename = "test_autotune_train_simple_model_at_config.json"
 
     # Enable Dataset AutoTune
     original_autotune = ds.config.get_enable_autotune()
-    ds.config.set_enable_autotune(True)
+    ds.config.set_enable_autotune(True, str(tmp_path) + at_config_filename)
 
-    ds_train = create_dataset(os.path.join("/home/workspace/mindspore_dataset/mnist", "train"), 32, 1)
+    ds_train = create_dataset(os.path.join("/home/workspace/mindspore_dataset/mnist", "train"), 32)
     model = create_model()
 
-    print("Start Training.")
+    print("Start training.")
     epoch_size = 10
+    start_time = time.time()
     model.train(epoch_size, ds_train)
-    print("Training is finished.")
+    print("Training finished. Took {}s".format(time.time() - start_time))
+
+    ds.config.set_enable_autotune(False)
+
+    ds_train_deserialized = ds.deserialize(json_filepath=str(tmp_path) + at_config_filename)
+
+    num = 0
+    for data1, data2 in zip(ds_train.create_dict_iterator(num_epochs=1, output_numpy=True),
+                            ds_train_deserialized.create_dict_iterator(num_epochs=1, output_numpy=True)):
+        np.testing.assert_array_equal(data1['image'], data2['image'])
+        np.testing.assert_array_equal(data1['label'], data2['label'])
+        num += 1
+
+    assert num == 1875
 
     # Restore settings
     ds.config.set_enable_autotune(original_autotune)
@@ -188,5 +198,5 @@ def test_autotune_pymultiproc_train_simple_model():
 
 
 if __name__ == "__main__":
-    test_autotune_train_simple_model()
+    test_autotune_train_simple_model("")
     test_autotune_pymultiproc_train_simple_model()
diff --git a/tests/ut/cpp/dataset/ir_tree_adapter_test.cc b/tests/ut/cpp/dataset/ir_tree_adapter_test.cc
index f928bacf2bf..d9d2c87eb54 100644
--- a/tests/ut/cpp/dataset/ir_tree_adapter_test.cc
+++ b/tests/ut/cpp/dataset/ir_tree_adapter_test.cc
@@ -21,24 +21,15 @@
 #include "minddata/dataset/include/dataset/transforms.h"
 
 // IR non-leaf nodes
-#include "minddata/dataset/engine/ir/datasetops/batch_node.h"
 #include "minddata/dataset/engine/ir/datasetops/bucket_batch_by_length_node.h"
-#include "minddata/dataset/engine/ir/datasetops/concat_node.h"
-#include "minddata/dataset/engine/ir/datasetops/map_node.h"
-#include "minddata/dataset/engine/ir/datasetops/project_node.h"
-#include "minddata/dataset/engine/ir/datasetops/rename_node.h"
-#include "minddata/dataset/engine/ir/datasetops/shuffle_node.h"
-#include "minddata/dataset/engine/ir/datasetops/skip_node.h"
-#include "minddata/dataset/engine/ir/datasetops/zip_node.h"
 
 #include "minddata/dataset/engine/tree_modifier.h"
+#include "minddata/dataset/engine/serdes.h"
 
 using namespace mindspore::dataset;
 using mindspore::dataset::Tensor;
 
-class MindDataTestTreeAdapter : public UT::DatasetOpTesting {
- protected:
-};
+class MindDataTestTreeAdapter : public UT::DatasetOpTesting {};
 
 TEST_F(MindDataTestTreeAdapter, TestSimpleTreeAdapter) {
   MS_LOG(INFO) << "Doing MindDataTestTreeAdapter-TestSimpleTreeAdapter.";
@@ -148,6 +139,121 @@ TEST_F(MindDataTestTreeAdapter, TestProjectMapTreeAdapter) {
   EXPECT_TRUE(err_msg.find("EOF buffer encountered.") != err_msg.npos);
 }
 
+// Feature: Test for Serializing and Deserializing an optimized IR Tree after the tree has been modified with
+// TreeModifier or in other words through Autotune indirectly.
+// Description: Create a simple tree, modify the workers and queue size, serialize the optimized IR Tree, obtain a new
+// tree with deserialize and then compare the output of serializing the new optimized IR tree with the first tree.
+// Expectation: No failures.
+TEST_F(MindDataTestTreeAdapter, TestOptimizedTreeSerializeDeserializeForAutoTune) {
+  MS_LOG(INFO) << "Doing MindDataTestTreeAdapter-TestOptimizedTreeSerializeDeserializeForAutoTune.";
+
+  // Create a CSVDataset, with single CSV file
+  std::string train_file = datasets_root_path_ + "/testCSV/1.csv";
+  std::vector<std::string> column_names = {"col1", "col2", "col3", "col4"};
+  std::shared_ptr<Dataset> ds = CSV({train_file}, ',', {}, column_names, 0, ShuffleMode::kFalse);
+  ASSERT_NE(ds, nullptr);
+  ds = ds->Project({"col1"});
+  ASSERT_NE(ds, nullptr);
+  ds = ds->Repeat(2);
+  ASSERT_NE(ds, nullptr);
+  auto to_number = std::make_shared<text::ToNumber>(mindspore::DataType::kNumberTypeInt32);
+  ASSERT_NE(to_number, nullptr);
+  ds = ds->Map({to_number}, {"col1"}, {"col1"});
+  ds->SetNumWorkers(1);
+  ds = ds->Batch(1);
+  ds->SetNumWorkers(1);
+
+  // Create a tree adapter and compile the IR Tree
+  auto tree_adapter1 = std::make_shared<TreeAdapter>();
+  ASSERT_OK(tree_adapter1->Compile(ds->IRNode(), 1));
+
+  // Change num_parallel_workers and connector_queue_size for some ops
+  auto tree_modifier = std::make_unique<TreeModifier>(tree_adapter1.get());
+  tree_modifier->AddChangeRequest(1, std::make_shared<ChangeNumWorkersRequest>(10));
+  tree_modifier->AddChangeRequest(1, std::make_shared<ResizeConnectorRequest>(20));
+  tree_modifier->AddChangeRequest(0, std::make_shared<ResizeConnectorRequest>(100));
+  tree_modifier->AddChangeRequest(0, std::make_shared<ChangeNumWorkersRequest>(10));
+
+  std::vector<int32_t> expected_result = {1, 5, 9, 1, 5, 9};
+  TensorRow row;
+
+  uint64_t i = 0;
+  ASSERT_OK(tree_adapter1->GetNext(&row));
+  while (!row.empty()) {
+    auto tensor = row[0];
+    int32_t num;
+    ASSERT_OK(tensor->GetItemAt(&num, {0}));
+    EXPECT_EQ(num, expected_result[i]);
+    ASSERT_OK(tree_adapter1->GetNext(&row));
+    i++;
+  }
+  // Expect 6 samples
+  EXPECT_EQ(i, 6);
+
+  // Serialize the optimized IR Tree
+  nlohmann::json out_json;
+  ASSERT_OK(Serdes::SaveToJSON(tree_adapter1->RootIRNode(), "", &out_json));
+
+  // Check that updated values of num_parallel_workers and connector_queue_size are not reflected in the json
+  EXPECT_EQ(out_json["op_type"], "Batch");
+  EXPECT_NE(out_json["num_parallel_workers"], 10);
+  EXPECT_NE(out_json["connector_queue_size"], 100);
+
+  EXPECT_EQ(out_json["children"][0]["op_type"], "Map");
+  EXPECT_NE(out_json["children"][0]["num_parallel_workers"], 10);
+  EXPECT_NE(out_json["children"][0]["connector_queue_size"], 20);
+
+  // Create an op_id to dataset op mapping
+  std::map<int32_t, std::shared_ptr<DatasetOp>> op_mapping;
+  auto tree = tree_adapter1->GetExecutionTree();
+  ASSERT_NE(tree, nullptr);
+
+  for (auto itr = tree->begin(); itr != tree->end(); ++itr) {
+    op_mapping[itr->id()] = itr.get();
+  }
+
+  // Update the serialized JSON object of the optimized IR tree
+  ASSERT_OK(Serdes::UpdateOptimizedIRTreeJSON(&out_json, op_mapping));
+
+  // Check that updated values of num_parallel_workers and connector_queue_size are reflected in the json now
+  EXPECT_EQ(out_json["op_type"], "Batch");
+  EXPECT_EQ(out_json["num_parallel_workers"], 10);
+  EXPECT_EQ(out_json["connector_queue_size"], 100);
+
+  EXPECT_EQ(out_json["children"][0]["op_type"], "Map");
+  EXPECT_EQ(out_json["children"][0]["num_parallel_workers"], 10);
+  EXPECT_EQ(out_json["children"][0]["connector_queue_size"], 20);
+
+  // Deserialize the above updated serialized optimized IR Tree
+  std::shared_ptr<DatasetNode> deserialized_node;
+  ASSERT_OK(Serdes::ConstructPipeline(out_json, &deserialized_node));
+
+  // Create a new tree adapter and compile the IR Tree obtained from deserialization above
+  auto tree_adapter2 = std::make_shared<TreeAdapter>();
+  ASSERT_OK(tree_adapter2->Compile(deserialized_node, 1));
+
+  // Serialize the new optimized IR Tree
+  nlohmann::json out_json1;
+  ASSERT_OK(Serdes::SaveToJSON(tree_adapter2->RootIRNode(), "", &out_json1));
+
+  // Ensure that both the serialized outputs are equal
+  EXPECT_TRUE(out_json == out_json1);
+
+  i = 0;
+  ASSERT_OK(tree_adapter2->GetNext(&row));
+  while (!row.empty()) {
+    auto tensor = row[0];
+    int32_t num;
+    ASSERT_OK(tensor->GetItemAt(&num, {0}));
+    EXPECT_EQ(num, expected_result[i]);
+    ASSERT_OK(tree_adapter2->GetNext(&row));
+    i++;
+  }
+
+  // Expect 6 samples
+  EXPECT_EQ(i, 6);
+}
+
 // Feature: Basic test for TreeModifier
 // Description: Create simple tree and modify the tree by adding workers, change queue size and then removing workers
 // Expectation: No failures.
@@ -193,7 +299,7 @@ TEST_F(MindDataTestTreeAdapter, TestSimpleTreeModifier) {
   uint64_t i = 0;
   ASSERT_OK(tree_adapter->GetNext(&row));
 
-  while (row.size() != 0) {
+  while (!row.empty()) {
     auto tensor = row[0];
     int32_t num;
     ASSERT_OK(tensor->GetItemAt(&num, {0}));
@@ -232,7 +338,7 @@ TEST_F(MindDataTestTreeAdapter, TestTreeModifierMindRecord) {
   // Iterate the dataset and collect the file_names in the dataset
   ASSERT_OK(tree_adapter->GetNext(&row));
   uint64_t i = 0;
-  while (row.size() != 0) {
+  while (!row.empty()) {
     auto tensor = row[0];
     std::string_view sv;
     ASSERT_OK(tensor->GetItemAt(&sv, {}));
@@ -255,7 +361,7 @@ TEST_F(MindDataTestTreeAdapter, TestTreeModifierMindRecord) {
 
   i = 0;
   ASSERT_OK(tree_adapter2->GetNext(&row));
-  while (row.size() != 0) {
+  while (!row.empty()) {
     auto tensor = row[0];
     std::string_view sv;
     ASSERT_OK(tensor->GetItemAt(&sv, {}));
@@ -278,7 +384,7 @@ TEST_F(MindDataTestTreeAdapter, TestTreeModifierMindRecord) {
 
   i = 0;
   ASSERT_OK(tree_adapter3->GetNext(&row));
-  while (row.size() != 0) {
+  while (!row.empty()) {
     auto tensor = row[0];
     std::string_view sv;
     ASSERT_OK(tensor->GetItemAt(&sv, {}));
@@ -290,4 +396,4 @@ TEST_F(MindDataTestTreeAdapter, TestTreeModifierMindRecord) {
   }
   // Expect 20 samples
   EXPECT_EQ(i, 20);
-}
\ No newline at end of file
+}
diff --git a/tests/ut/data/dataset/tf_file_dataset/pyvision_dataset_pipeline.json b/tests/ut/data/dataset/tf_file_dataset/pyvision_dataset_pipeline.json
index 7f13754314e..518525d4555 100644
--- a/tests/ut/data/dataset/tf_file_dataset/pyvision_dataset_pipeline.json
+++ b/tests/ut/data/dataset/tf_file_dataset/pyvision_dataset_pipeline.json
@@ -1 +1 @@
-{"callback":[],"children":[{"callback":[],"children":[{"children":[],"columns_list":["image","label"],"dataset_files":["../data/dataset/test_tf_file_3_images/train-0000-of-0001.data"],"num_parallel_workers":8,"num_samples":0,"num_shards":1,"op_type":"TFRecordDataset","schema_file_path":"../data/dataset/test_tf_file_3_images/datasetSchema.json","shard_equal_rows":false,"shard_id":0,"shuffle":0,"shuffle_files":false,"shuffle_global":false}],"input_columns":["image"],"num_parallel_workers":8,"op_type":"Map","operations":[{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"Compose","tensor_op_params":{"random":false,"transforms":[{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"Decode","tensor_op_params":{"random":false}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"CenterCrop","tensor_op_params":{"random":false,"size":[32,32]}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"ToTensor","tensor_op_params":{"output_type":"float32","random":false}}]}}],"output_columns":["image"],"project_columns":[]}],"input_columns":["image"],"num_parallel_workers":8,"op_type":"Map","operations":[{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"RandomApply","tensor_op_params":{"prob":0.5,"transforms":[{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"RandomColorAdjust","tensor_op_params":{"brightness":[1,1],"contrast":[1,1],"hue":[0,0],"saturation":[1,1]}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"FiveCrop","tensor_op_params":{"random":false,"size":1}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"Grayscale","tensor_op_params":{"num_output_channels":1,"random":false}},{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"OneHotOp","tensor_op_params":{"num_classes":1,"random":false,"smoothing_rate":0.0}}]}}],"output_columns":["image"],"project_columns":[]}
\ No newline at end of file
+{"callback":[],"children":[{"callback":[],"children":[{"children":[],"columns_list":["image","label"],"dataset_files":["../data/dataset/test_tf_file_3_images/train-0000-of-0001.data"],"num_parallel_workers":8,"connector_queue_size":8,"num_samples":0,"num_shards":1,"op_type":"TFRecordDataset","schema_file_path":"../data/dataset/test_tf_file_3_images/datasetSchema.json","shard_equal_rows":false,"shard_id":0,"shuffle":0,"shuffle_files":false,"shuffle_global":false}],"input_columns":["image"],"num_parallel_workers":8,"connector_queue_size":8,"op_type":"Map","operations":[{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"Compose","tensor_op_params":{"random":false,"transforms":[{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"Decode","tensor_op_params":{"random":false}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"CenterCrop","tensor_op_params":{"random":false,"size":[32,32]}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"ToTensor","tensor_op_params":{"output_type":"float32","random":false}}]}}],"output_columns":["image"],"project_columns":[]}],"input_columns":["image"],"num_parallel_workers":8,"connector_queue_size":8,"op_type":"Map","operations":[{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"RandomApply","tensor_op_params":{"prob":0.5,"transforms":[{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"RandomColorAdjust","tensor_op_params":{"brightness":[1,1],"contrast":[1,1],"hue":[0,0],"saturation":[1,1]}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"FiveCrop","tensor_op_params":{"random":false,"size":1}},{"python_module":"mindspore.dataset.vision.py_transforms","tensor_op_name":"Grayscale","tensor_op_params":{"num_output_channels":1,"random":false}},{"python_module":"mindspore.dataset.transforms.py_transforms","tensor_op_name":"OneHotOp","tensor_op_params":{"num_classes":1,"random":false,"smoothing_rate":0.0}}]}}],"output_columns":["image"],"project_columns":[]}
\ No newline at end of file
diff --git a/tests/ut/python/dataset/test_autotune_saveload.py b/tests/ut/python/dataset/test_autotune_saveload.py
index aaf087e91cb..898dd497c2f 100644
--- a/tests/ut/python/dataset/test_autotune_saveload.py
+++ b/tests/ut/python/dataset/test_autotune_saveload.py
@@ -16,12 +16,15 @@
 Test Dataset AutoTune's Save and Load Configuration support
 """
 import filecmp
+
 import numpy as np
 import pytest
 import mindspore.dataset as ds
 import mindspore.dataset.transforms.c_transforms as c_transforms
+import mindspore.dataset.vision.c_transforms as c_vision
 
 MNIST_DATA_DIR = "../data/dataset/testMnistData"
+DATA_DIR = "../data/dataset/testPK/data"
 
 
 @pytest.mark.forked
@@ -36,6 +39,7 @@ class TestAutotuneSaveLoad:
         Description: Test save final config with GeneratorDataset pipeline: Generator -> Shuffle -> Batch
         Expectation: pipeline runs successfully
         """
+        original_autotune = ds.config.get_enable_autotune()
         ds.config.set_enable_autotune(True, str(tmp_path) + "test_autotune_generator_atfinal.json")
 
         source = [(np.array([x]),) for x in range(1024)]
@@ -50,17 +54,18 @@ class TestAutotuneSaveLoad:
             for _ in itr:
                 pass
 
-        ds.config.set_enable_autotune(False)
+        ds.config.set_enable_autotune(original_autotune)
 
     @staticmethod
-    def skip_test_autotune_mnist_pipeline(tmp_path):
+    def test_autotune_mnist_pipeline(tmp_path):
         """
         Feature: Autotuning
         Description: Test save final config with Mnist pipeline: Mnist -> Batch -> Map
         Expectation: pipeline runs successfully
         """
+        original_autotune = ds.config.get_enable_autotune()
         ds.config.set_enable_autotune(True, str(tmp_path) + "test_autotune_mnist_pipeline_atfinal.json")
-
+        original_seed = ds.config.get_seed()
         ds.config.set_seed(1)
 
         data1 = ds.MnistDataset(MNIST_DATA_DIR, num_samples=100)
@@ -74,7 +79,7 @@ class TestAutotuneSaveLoad:
         for _ in data1.create_dict_iterator(num_epochs=1, output_numpy=True):
             pass
 
-        ds.config.set_enable_autotune(False)
+        ds.config.set_enable_autotune(original_autotune)
 
         # Confirm final AutoTune config file is identical to the serialized file.
         assert filecmp.cmp(str(tmp_path) + "test_autotune_mnist_pipeline_atfinal.json",
@@ -91,6 +96,8 @@ class TestAutotuneSaveLoad:
             num += 1
         assert num == 10
 
+        ds.config.set_seed(original_seed)
+
     @staticmethod
     def test_autotune_save_overwrite_generator(tmp_path):
         """
@@ -102,7 +109,7 @@ class TestAutotuneSaveLoad:
         source = [(np.array([x]),) for x in range(1024)]
 
         at_final_json_filename = "test_autotune_save_overwrite_generator_atfinal.json"
-
+        original_autotune = ds.config.get_enable_autotune()
         ds.config.set_enable_autotune(True, str(tmp_path) + at_final_json_filename)
 
         data1 = ds.GeneratorDataset(source, ["data"])
@@ -120,20 +127,22 @@ class TestAutotuneSaveLoad:
         for _ in data2.create_dict_iterator(num_epochs=1, output_numpy=True):
             pass
 
-        ds.config.set_enable_autotune(False)
+        ds.config.set_enable_autotune(original_autotune)
 
     @staticmethod
-    def skip_test_autotune_save_overwrite_mnist(tmp_path):
+    def test_autotune_save_overwrite_mnist(tmp_path):
         """
         Feature: Autotuning
         Description: Test set_enable_autotune and existing json_filepath is overwritten
         Expectation: set_enable_autotune() executes successfully with file-exist warning produced.
             Execution of 2nd pipeline overwrites AutoTune configuration file of 1st pipeline.
         """
+        original_seed = ds.config.get_seed()
         ds.config.set_seed(1)
         at_final_json_filename = "test_autotune_save_overwrite_mnist_atfinal.json"
 
         # Pipeline#1
+        original_autotune = ds.config.get_enable_autotune()
         ds.config.set_enable_autotune(True, str(tmp_path) + at_final_json_filename)
 
         data1 = ds.MnistDataset(MNIST_DATA_DIR, num_samples=100)
@@ -170,3 +179,41 @@ class TestAutotuneSaveLoad:
         # Confirm the serialized files for the 2 different pipelines are different
         assert not filecmp.cmp(str(tmp_path) + "test_autotune_save_overwrite_mnist_serialized1.json",
                                str(tmp_path) + "test_autotune_save_overwrite_mnist_serialized2.json")
+
+        ds.config.set_seed(original_seed)
+        ds.config.set_enable_autotune(original_autotune)
+
+    @staticmethod
+    def test_autotune_warning_with_offload(tmp_path, capfd):
+        """
+        Feature: Autotuning
+        Description: Test autotune config saving with offload=True
+        Expectation: Autotune should not write the config file and print a log message
+        """
+        original_seed = ds.config.get_seed()
+        ds.config.set_seed(1)
+        at_final_json_filename = "test_autotune_warning_with_offload_config.json"
+        config_path = tmp_path / at_final_json_filename
+        original_autotune = ds.config.get_enable_autotune()
+        ds.config.set_enable_autotune(True, str(config_path))
+
+        # Dataset with offload activated.
+        dataset = ds.ImageFolderDataset(DATA_DIR)
+        dataset = dataset.map(operations=[c_vision.Decode()], input_columns="image")
+        dataset = dataset.map(operations=[c_vision.HWC2CHW()], input_columns="image", offload=True)
+        dataset = dataset.batch(8, drop_remainder=True)
+
+        for _ in dataset.create_tuple_iterator(num_epochs=1, output_numpy=True):
+            pass
+
+        _, err = capfd.readouterr()
+
+        assert "Some nodes have been offloaded. AutoTune is unable to write the autotune configuration to disk. " \
+               "Disable offload to prevent this from happening." in err
+
+        with pytest.raises(FileNotFoundError):
+            with open(config_path) as _:
+                pass
+
+        ds.config.set_enable_autotune(original_autotune)
+        ds.config.set_seed(original_seed)