Method CountRows

cpp/src/arrow/dataset/dataset.cc:74–77

}

Future<std::optional<int64_t>> Fragment::CountRows(compute::Expression,
                                                   const std::shared_ptr<ScanOptions>&) {
  return Future<std::optional<int64_t>>::MakeFinished(std::nullopt);
}

Status Fragment::ClearCachedMetadata() {
  auto lock = physical_schema_mutex_.Lock();