Method StartProducing

cpp/src/arrow/dataset/test_util_internal.cc:85–91

  }

  Status StartProducing() override {
    if (start_producing_) {
      RETURN_NOT_OK(start_producing_(this));
    }
    started_ = true;
    return Status::OK();
  }

  void PauseProducing(ExecNode* output, int32_t counter) override {
    ASSERT_NE(output_, nullptr) << "Sink nodes should not experience backpressure";