cambyzju commented on code in PR #15665:
URL: https://github.com/apache/doris/pull/15665#discussion_r1065292496
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be/src/olap/rowset/segment_v2/column_reader.cpp:
##########
@@ -49,6 +50,23 @@ Status ColumnReader::create(const ColumnReaderOptions& opts,
const ColumnMetaPB&
} else {
auto type = (FieldType)meta.type();
switch (type) {
+ case FieldType::OLAP_FIELD_TYPE_STRUCT: {
+ // not support empty struct
+ DCHECK(meta.children_columns_size() >= 1);
+ // create struct column reader
+ std::unique_ptr<ColumnReader> struct_reader(
+ new ColumnReader(opts, meta, num_rows, file_reader));
+ struct_reader->_sub_readers.resize(meta.children_columns_size());
+ for (size_t i = 0; i < meta.children_columns_size(); i++) {
+ std::unique_ptr<ColumnReader> sub_reader;
+ RETURN_IF_ERROR(ColumnReader::create(opts,
meta.children_columns(i),
Review Comment:
for loop may return early, it is better not use resize, use reserve instead.
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