mrhhsg commented on code in PR #63528:
URL: https://github.com/apache/doris/pull/63528#discussion_r3314309503
##########
be/src/storage/segment/segment.cpp:
##########
@@ -659,10 +659,11 @@ Status Segment::new_default_iterator(const TabletColumn&
tablet_column,
"column_type={}",
tablet_column.unique_id(), tablet_column.name(),
tablet_column.type());
}
+ auto serde = remove_nullable(tablet_column.get_vec_type())->get_serde();
Review Comment:
Addressed in 08b4e4987e5. `SchemaChangeJob::_init_column_mapping()` now
parses explicit defaults with
`remove_nullable(column_schema.get_vec_type())->get_serde()`, matching the
default-iterator path so nullable complex schema-change defaults with
type-mismatched ARRAY/MAP/STRUCT values are rejected instead of being
materialized as NULL. Added regression coverage for the direct schema-change
path with invalid nullable ARRAY/MAP/STRUCT defaults.
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