diff --git a/mindspore/ccsrc/mindrecord/include/shard_reader.h b/mindspore/ccsrc/mindrecord/include/shard_reader.h
index 8ce9e3fdfc..13d68b01f7 100644
--- a/mindspore/ccsrc/mindrecord/include/shard_reader.h
+++ b/mindspore/ccsrc/mindrecord/include/shard_reader.h
@@ -280,9 +280,6 @@ class ShardReader {
   /// \brief read one row by one task
   TASK_RETURN_CONTENT ConsumerOneTask(int task_id, uint32_t consumer_id);
 
-  /// \brief get all the column names by schema
-  vector<std::string> GetAllColumns();
-
   /// \brief get one row from buffer in block-reader mode
   std::shared_ptr<std::vector<std::tuple<std::vector<uint8_t>, json>>> GetRowFromBuffer(int bufId, int rowId);
 
@@ -308,7 +305,6 @@ class ShardReader {
   uint64_t page_size_;                         // page size
   int shard_count_;                            // number of shards
   std::shared_ptr<ShardHeader> shard_header_;  // shard header
-  bool nlp_ = false;                           // NLP data
 
   std::vector<sqlite3 *> database_paths_;                                        // sqlite handle list
   std::vector<string> file_paths_;                                               // file paths
diff --git a/mindspore/ccsrc/mindrecord/include/shard_segment.h b/mindspore/ccsrc/mindrecord/include/shard_segment.h
index 9ffb7aee88..12497a5ace 100644
--- a/mindspore/ccsrc/mindrecord/include/shard_segment.h
+++ b/mindspore/ccsrc/mindrecord/include/shard_segment.h
@@ -90,8 +90,6 @@ class ShardSegment : public ShardReader {
 
   std::string CleanUp(std::string fieldName);
 
-  std::tuple<std::vector<uint8_t>, json> GetImageLabel(std::vector<uint8_t> images, json label);
-
   std::pair<MSRStatus, std::vector<uint8_t>> PackImages(int group_id, int shard_id, std::vector<uint64_t> offset);
 
   std::vector<std::string> candidate_category_fields_;
diff --git a/mindspore/ccsrc/mindrecord/io/shard_reader.cc b/mindspore/ccsrc/mindrecord/io/shard_reader.cc
index ed5af0e6af..1f0a6b8dce 100644
--- a/mindspore/ccsrc/mindrecord/io/shard_reader.cc
+++ b/mindspore/ccsrc/mindrecord/io/shard_reader.cc
@@ -433,7 +433,6 @@ ROW_GROUPS ShardReader::ReadAllRowGroup(std::vector<std::string> &columns) {
 }
 
 ROW_GROUP_BRIEF ShardReader::ReadRowGroupBrief(int group_id, int shard_id, const std::vector<std::string> &columns) {
-  std::lock_guard<std::mutex> lck(shard_locker_);
   const auto &ret = shard_header_->GetPageByGroupId(group_id, shard_id);
   if (SUCCESS != ret.first) {
     return std::make_tuple(FAILED, "", 0, 0, std::vector<std::vector<uint64_t>>(), std::vector<json>());
@@ -455,7 +454,6 @@ ROW_GROUP_BRIEF ShardReader::ReadRowGroupBrief(int group_id, int shard_id, const
 ROW_GROUP_BRIEF ShardReader::ReadRowGroupCriteria(int group_id, int shard_id,
                                                   const std::pair<std::string, std::string> &criteria,
                                                   const std::vector<std::string> &columns) {
-  std::lock_guard<std::mutex> lck(shard_locker_);
   const auto &ret = shard_header_->GetPageByGroupId(group_id, shard_id);
   if (SUCCESS != ret.first) {
     return std::make_tuple(FAILED, "", 0, 0, std::vector<std::vector<uint64_t>>(), std::vector<json>());
@@ -532,13 +530,6 @@ std::vector<std::vector<uint64_t>> ShardReader::GetImageOffset(int page_id, int
   return res;
 }
 
-void ShardReader::CheckNlp() {
-  nlp_ = false;
-  return;
-}
-
-bool ShardReader::GetNlpFlag() { return nlp_; }
-
 std::pair<ShardType, std::vector<std::string>> ShardReader::GetBlobFields() {
   std::vector<std::string> blob_fields;
   for (auto &p : GetShardHeader()->GetSchemas()) {
@@ -547,7 +538,7 @@ std::pair<ShardType, std::vector<std::string>> ShardReader::GetBlobFields() {
     blob_fields.assign(fields.begin(), fields.end());
     break;
   }
-  return std::make_pair(nlp_ ? kNLP : kCV, blob_fields);
+  return std::make_pair(kCV, blob_fields);
 }
 
 void ShardReader::CheckIfColumnInIndex(const std::vector<std::string> &columns) {
@@ -828,18 +819,11 @@ MSRStatus ShardReader::Open(const std::vector<std::string> &file_paths, bool loa
   if (n_consumer < kMinConsumerCount) {
     n_consumer = kMinConsumerCount;
   }
-  CheckNlp();
-
-  // dead code
-  if (nlp_) {
-    selected_columns_ = selected_columns;
-  } else {
-    vector<std::string> blob_fields = GetBlobFields().second;
-    for (unsigned int i = 0; i < selected_columns.size(); ++i) {
-      if (!std::any_of(blob_fields.begin(), blob_fields.end(),
-                       [&selected_columns, i](std::string item) { return selected_columns[i] == item; })) {
-        selected_columns_.push_back(selected_columns[i]);
-      }
+  vector<std::string> blob_fields = GetBlobFields().second;
+  for (unsigned int i = 0; i < selected_columns.size(); ++i) {
+    if (!std::any_of(blob_fields.begin(), blob_fields.end(),
+                     [&selected_columns, i](std::string item) { return selected_columns[i] == item; })) {
+      selected_columns_.push_back(selected_columns[i]);
     }
   }
   selected_columns_ = selected_columns;
@@ -895,7 +879,6 @@ MSRStatus ShardReader::OpenPy(const std::vector<std::string> &file_paths, bool l
   if (Open(n_consumer) == FAILED) {
     return FAILED;
   }
-  CheckNlp();
   // Initialize argument
   shard_count_ = static_cast<int>(file_paths_.size());
   n_consumer_ = n_consumer;
@@ -918,10 +901,7 @@ MSRStatus ShardReader::Launch(bool isSimpleReader) {
     interrupt_ = true;
     return FAILED;
   }
-  MS_LOG(INFO) << "Launching read threads.";
-
   if (isSimpleReader) return SUCCESS;
-
   // Start provider consumer threads
   thread_set_ = std::vector<std::thread>(n_consumer_);
   if (n_consumer_ <= 0 || n_consumer_ > kMaxConsumerCount) {
@@ -940,29 +920,9 @@ MSRStatus ShardReader::Launch(bool isSimpleReader) {
   return SUCCESS;
 }
 
-vector<std::string> ShardReader::GetAllColumns() {
-  vector<std::string> columns;
-  if (nlp_) {
-    for (auto &c : selected_columns_) {
-      for (auto &p : GetShardHeader()->GetSchemas()) {
-        auto schema = p->GetSchema()["schema"];  // make sure schema is not reference since error occurred in arm.
-        for (auto it = schema.begin(); it != schema.end(); ++it) {
-          if (it.key() == c) {
-            columns.push_back(c);
-          }
-        }
-      }
-    }
-  } else {
-    columns = selected_columns_;
-  }
-  return columns;
-}
-
 MSRStatus ShardReader::CreateTasksByBlock(const std::vector<std::tuple<int, int, int, uint64_t>> &row_group_summary,
                                           const std::vector<std::shared_ptr<ShardOperator>> &operators) {
-  vector<std::string> columns = GetAllColumns();
-  CheckIfColumnInIndex(columns);
+  CheckIfColumnInIndex(selected_columns_);
   for (const auto &rg : row_group_summary) {
     auto shard_id = std::get<0>(rg);
     auto group_id = std::get<1>(rg);
@@ -974,9 +934,7 @@ MSRStatus ShardReader::CreateTasksByBlock(const std::vector<std::tuple<int, int,
 
 MSRStatus ShardReader::CreateTasksByCategory(const std::vector<std::tuple<int, int, int, uint64_t>> &row_group_summary,
                                              const std::shared_ptr<ShardOperator> &op) {
-  vector<std::string> columns = GetAllColumns();
-  CheckIfColumnInIndex(columns);
-
+  CheckIfColumnInIndex(selected_columns_);
   auto category_op = std::dynamic_pointer_cast<ShardCategory>(op);
   auto categories = category_op->GetCategories();
   int64_t num_elements = category_op->GetNumElements();
@@ -1011,7 +969,7 @@ MSRStatus ShardReader::CreateTasksByCategory(const std::vector<std::tuple<int, i
       auto shard_id = std::get<0>(rg);
       auto group_id = std::get<1>(rg);
 
-      auto details = ReadRowGroupCriteria(group_id, shard_id, categories[categoryNo], columns);
+      auto details = ReadRowGroupCriteria(group_id, shard_id, categories[categoryNo], selected_columns_);
       if (SUCCESS != std::get<0>(details)) {
         return FAILED;
       }
@@ -1037,10 +995,9 @@ MSRStatus ShardReader::CreateTasksByCategory(const std::vector<std::tuple<int, i
 
 MSRStatus ShardReader::CreateTasksByRow(const std::vector<std::tuple<int, int, int, uint64_t>> &row_group_summary,
                                         const std::vector<std::shared_ptr<ShardOperator>> &operators) {
-  vector<std::string> columns = GetAllColumns();
-  CheckIfColumnInIndex(columns);
+  CheckIfColumnInIndex(selected_columns_);
 
-  auto ret = ReadAllRowGroup(columns);
+  auto ret = ReadAllRowGroup(selected_columns_);
   if (std::get<0>(ret) != SUCCESS) {
     return FAILED;
   }
@@ -1202,28 +1159,7 @@ TASK_RETURN_CONTENT ShardReader::ConsumerOneTask(int task_id, uint32_t consumer_
 
   // Deliver batch data to output map
   std::vector<std::tuple<std::vector<uint8_t>, json>> batch;
-  if (nlp_) {
-    // dead code
-    json blob_fields = json::from_msgpack(images_with_exact_columns);
-
-    json merge;
-    if (selected_columns_.size() > 0) {
-      for (auto &col : selected_columns_) {
-        if (blob_fields.find(col) != blob_fields.end()) {
-          merge[col] = blob_fields[col];
-        }
-      }
-    } else {
-      merge = blob_fields;
-    }
-    auto label_json = std::get<2>(task);
-    if (label_json != nullptr) {
-      merge.update(label_json);
-    }
-    batch.emplace_back(std::vector<uint8_t>{}, std::move(merge));
-  } else {
-    batch.emplace_back(std::move(images_with_exact_columns), std::move(std::get<2>(task)));
-  }
+  batch.emplace_back(std::move(images_with_exact_columns), std::move(std::get<2>(task)));
   return std::make_pair(SUCCESS, std::move(batch));
 }
 
diff --git a/mindspore/ccsrc/mindrecord/io/shard_segment.cc b/mindspore/ccsrc/mindrecord/io/shard_segment.cc
index d6536996ba..86c79ca05a 100644
--- a/mindspore/ccsrc/mindrecord/io/shard_segment.cc
+++ b/mindspore/ccsrc/mindrecord/io/shard_segment.cc
@@ -296,8 +296,7 @@ std::pair<MSRStatus, std::vector<std::tuple<std::vector<uint8_t>, json>>> ShardS
         if (SUCCESS != ret1.first) {
           return {FAILED, std::vector<std::tuple<std::vector<uint8_t>, json>>{}};
         }
-        auto imageLabel = GetImageLabel(ret1.second, labels[i]);
-        page.emplace_back(std::move(std::get<0>(imageLabel)), std::move(std::get<1>(imageLabel)));
+        page.emplace_back(std::move(ret1.second), std::move(labels[i]));
       }
     }
   }
@@ -371,35 +370,7 @@ std::pair<ShardType, std::vector<std::string>> ShardSegment::GetBlobFields() {
     blob_fields.assign(fields.begin(), fields.end());
     break;
   }
-  return std::make_pair(GetNlpFlag() ? kNLP : kCV, blob_fields);
-}
-
-std::tuple<std::vector<uint8_t>, json> ShardSegment::GetImageLabel(std::vector<uint8_t> images, json label) {
-  if (GetNlpFlag()) {
-    vector<std::string> columns;
-    for (auto &p : GetShardHeader()->GetSchemas()) {
-      auto schema = p->GetSchema()["schema"];  // make sure schema is not reference since error occurred in arm.
-      auto schema_items = schema.items();
-      using it_type = decltype(schema_items.begin());
-      std::transform(schema_items.begin(), schema_items.end(), std::back_inserter(columns),
-                     [](it_type item) { return item.key(); });
-    }
-
-    json blob_fields = json::from_msgpack(images);
-    json merge;
-    if (columns.size() > 0) {
-      for (auto &col : columns) {
-        if (blob_fields.find(col) != blob_fields.end()) {
-          merge[col] = blob_fields[col];
-        }
-      }
-    } else {
-      merge = blob_fields;
-    }
-    merge.update(label);
-    return std::make_tuple(std::vector<uint8_t>{}, merge);
-  }
-  return std::make_tuple(images, label);
+  return std::make_pair(kCV, blob_fields);
 }
 
 std::string ShardSegment::CleanUp(std::string field_name) {