HappenLee commented on code in PR #35628:
URL: https://github.com/apache/doris/pull/35628#discussion_r1625933395
##########
be/src/olap/rowset/segment_v2/column_reader.cpp:
##########
@@ -708,6 +719,79 @@ Status ColumnReader::new_iterator(ColumnIterator**
iterator) {
}
}
+Status ColumnReader::new_agg_state_iterator(ColumnIterator** iterator) {
+ if (!_agg_state_ptr) { // meet old version ColumnMetaPB
+ *iterator = new FileColumnIterator(this);
+ return Status::OK();
+ }
+
+ const auto* agg_state_type =
+ assert_cast<const
vectorized::DataTypeAggState*>(_agg_state_ptr.get());
+ auto type =
agg_state_type->get_serialized_type()->get_type_as_type_descriptor().type;
+
+ if (type == PrimitiveType::TYPE_STRING || type ==
PrimitiveType::INVALID_TYPE ||
Review Comment:
```type == PrimitiveType::TYPE_STRING || type == PrimitiveType::INVALID_TYPE
||
type == PrimitiveType::TYPE_OBJECT``` better be a function
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