Method HdfsScanner

be/src/exec/hdfs-scanner.cc:51–65

const char* HdfsScanner::LLVM_CLASS_NAME = "class.impala::HdfsScanner";

HdfsScanner::HdfsScanner(HdfsScanNodeBase* scan_node, RuntimeState* state)
    : scan_node_(scan_node),
      state_(state),
      file_metadata_utils_(scan_node),
      expr_perm_pool_(new MemPool(scan_node->expr_mem_tracker())),
      template_tuple_pool_(new MemPool(scan_node->mem_tracker())),
      tuple_byte_size_(scan_node->tuple_desc()->byte_size()),
      data_buffer_pool_(new MemPool(scan_node->mem_tracker())) {
  DCHECK_EQ(1, scan_node->row_desc()->tuple_descriptors().size())
      << "All HDFS scanners assume one tuple per row";
  for (SlotDescriptor* string_slot : scan_node_->tuple_desc()->string_slots()) {
    string_slot_offsets_.push_back(
        {string_slot->null_indicator_offset(), string_slot->tuple_offset()});
  }
}

HdfsScanner::HdfsScanner()
    : scan_node_(nullptr),