morningman commented on code in PR #16677:
URL: https://github.com/apache/doris/pull/16677#discussion_r1105200113
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be/src/vec/exec/format/orc/vorc_reader.cpp:
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@@ -253,13 +261,25 @@ Status OrcReader::_init_read_columns() {
orc_cols_lower_case.emplace_back(_get_field_name_lower_case(&root_type, i));
}
for (auto& col_name : _column_names) {
+ if (_is_hive) {
+ auto iter = _scan_params.slot_name_to_schema_pos.find(col_name);
+ if (iter != _scan_params.slot_name_to_schema_pos.end()) {
+ int pos = iter->second;
+ orc_cols_lower_case[pos] = iter->first;
+ }
Review Comment:
What if `iter == end()`, can it happen? it not, may we should add a DCHECK
or return error here
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