Check max_bin, etc. match config when using binary (#3592)

* Check max_bin, etc. match config when using binary.

* Check max_bin_by_feature, bin_construct_sample_cnt matching config.

include/LightGBM/dataset_loader.h

@@ -44,7 +44,7 @@ class DatasetLoader {
 
   void SetHeader(const char* filename);
 
-  void CheckDataset(const Dataset* dataset);
+  void CheckDataset(const Dataset* dataset, bool is_load_from_binary);
 
   std::vector<std::string> LoadTextDataToMemory(const char* filename, const Metadata& metadata, int rank, int num_machines, int* num_global_data, std::vector<data_size_t>* used_data_indices);
 

src/io/dataset_loader.cpp

@@ -186,6 +186,7 @@ Dataset* DatasetLoader::LoadFromFile(const char* filename, int rank, int num_mac
   data_size_t num_global_data = 0;
   std::vector<data_size_t> used_data_indices;
   auto bin_filename = CheckCanLoadFromBin(filename);
+  bool is_load_from_binary = false;
   if (bin_filename.size() == 0) {
     auto parser = std::unique_ptr<Parser>(Parser::CreateParser(filename, config_.header, 0, label_idx_));
     if (parser == nullptr) {
@@ -229,12 +230,15 @@ Dataset* DatasetLoader::LoadFromFile(const char* filename, int rank, int num_mac
     }
   } else {
     // load data from binary file
+    is_load_from_binary = true;
+    Log::Info("Load from binary file %s", bin_filename.c_str());
     dataset.reset(LoadFromBinFile(filename, bin_filename.c_str(), rank, num_machines, &num_global_data, &used_data_indices));
   }
   // check meta data
   dataset->metadata_.CheckOrPartition(num_global_data, used_data_indices);
   // need to check training data
-  CheckDataset(dataset.get());
+  CheckDataset(dataset.get(), is_load_from_binary);
+
   return dataset.release();
 }
 
@@ -707,7 +711,7 @@ Dataset* DatasetLoader::ConstructFromSampleData(double** sample_values,
 
 // ---- private functions ----
 
-void DatasetLoader::CheckDataset(const Dataset* dataset) {
+void DatasetLoader::CheckDataset(const Dataset* dataset, bool is_load_from_binary) {
   if (dataset->num_data_ <= 0) {
     Log::Fatal("Data file %s is empty", dataset->data_filename_.c_str());
   }
@@ -736,6 +740,38 @@ void DatasetLoader::CheckDataset(const Dataset* dataset) {
   if (!is_feature_order_by_group) {
     Log::Fatal("Features in dataset should be ordered by group");
   }
+
+  if (is_load_from_binary) {
+    if (dataset->max_bin_ != config_.max_bin) {
+      Log::Fatal("Dataset max_bin %d != config %d", dataset->max_bin_, config_.max_bin);
+    }
+    if (dataset->min_data_in_bin_ != config_.min_data_in_bin) {
+      Log::Fatal("Dataset min_data_in_bin %d != config %d", dataset->min_data_in_bin_, config_.min_data_in_bin);
+    }
+    if (dataset->use_missing_ != config_.use_missing) {
+      Log::Fatal("Dataset use_missing %d != config %d", dataset->use_missing_, config_.use_missing);
+    }
+    if (dataset->zero_as_missing_ != config_.zero_as_missing) {
+      Log::Fatal("Dataset zero_as_missing %d != config %d", dataset->zero_as_missing_, config_.zero_as_missing);
+    }
+    if (dataset->bin_construct_sample_cnt_ != config_.bin_construct_sample_cnt) {
+      Log::Fatal("Dataset bin_construct_sample_cnt %d != config %d", dataset->bin_construct_sample_cnt_, config_.bin_construct_sample_cnt);
+    }
+    if ((dataset->max_bin_by_feature_.size() != config_.max_bin_by_feature.size()) ||
+        !std::equal(dataset->max_bin_by_feature_.begin(), dataset->max_bin_by_feature_.end(),
+            config_.max_bin_by_feature.begin())) {
+      Log::Fatal("Dataset max_bin_by_feature does not match with config");
+    }
+
+    int label_idx = -1;
+    if (Common::AtoiAndCheck(config_.label_column.c_str(), &label_idx)) {
+      if (dataset->label_idx_ != label_idx) {
+        Log::Fatal("Dataset label_idx %d != config %d", dataset->zero_as_missing_, config_.zero_as_missing);
+      }
+    } else {
+      Log::Info("Recommend use integer for label index when loading data from binary for sanity check.");
+    }
+  }
 }
 
 std::vector<std::string> DatasetLoader::LoadTextDataToMemory(const char* filename, const Metadata& metadata,