Class ReadStats

cpp/src/arrow/ipc/reader.h:47–67

using RecordBatchReader = ::arrow::RecordBatchReader;

struct ReadStats {
  /// Number of IPC messages read.
  int64_t num_messages = 0;
  /// Number of record batches read.
  int64_t num_record_batches = 0;
  /// Number of dictionary batches read.
  ///
  /// Note: num_dictionary_batches >= num_dictionary_deltas + num_replaced_dictionaries
  int64_t num_dictionary_batches = 0;

  /// Number of dictionary deltas read.
  int64_t num_dictionary_deltas = 0;
  /// Number of replaced dictionaries (i.e. where a dictionary batch replaces
  /// an existing dictionary with an unrelated new dictionary).
  int64_t num_replaced_dictionaries = 0;

  /// The original endianness of the schema in the IPC file or stream.
  /// This is not reflected in the schema returned by the RecordBatchReader
  /// unless IpcReadOptions.ensure_native_endian is set to false.
  Endianness original_endianness = Endianness::Native;
};

/// \brief Synchronous batch stream reader that reads from io::InputStream
///