Method InitTemplateTuple

be/src/exec/hdfs-scan-node-base.cc:416–427

}

Tuple* HdfsScanPlanNode::InitTemplateTuple(
    const std::vector<ScalarExprEvaluator*>& evals, MemPool* pool) const {
  if (partition_key_slots_.empty() && !HasVirtualColumnInTemplateTuple()) return nullptr;
  Tuple* template_tuple = Tuple::Create(tuple_desc_->byte_size(), pool);
  for (int i = 0; i < partition_key_slots_.size(); ++i) {
    const SlotDescriptor* slot_desc = partition_key_slots_[i];
    ScalarExprEvaluator* eval = evals[slot_desc->col_pos()];
    // Exprs guaranteed to be literals, so can safely be evaluated without a row.
    RawValue::Write(eval->GetValue(NULL), template_tuple, slot_desc, nullptr);
  }
  return template_tuple;
}

int HdfsScanPlanNode::GetMaterializedSlotIdx(const std::vector<int>& path) const {
  auto result = path_to_materialized_slot_idx_.find(path);