Method StartProducing

cpp/src/arrow/acero/hash_join_node.cc:996–1001

  }

  Status StartProducing() override {
    NoteStartProducing(ToStringExtra());
    RETURN_NOT_OK(
        pushdown_context_.StartProducing(plan_->query_context()->GetThreadIndex()));
    return Status::OK();
  }

  void PauseProducing(ExecNode* output, int32_t counter) override {
    // TODO(ARROW-16246)