yangzhg commented on a change in pull request #4143:
URL: https://github.com/apache/incubator-doris/pull/4143#discussion_r459831364
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File path: be/src/olap/rowset/segment_group.cpp
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@@ -268,11 +265,14 @@ OLAPStatus
SegmentGroup::add_zone_maps_for_linked_schema_change(
WrapperField* second = WrapperField::create(column);
DCHECK(second != NULL) << "failed to allocate memory for field: " << i;
- if (schema_mapping[i].ref_column == -1) {
+ // add column also can add zone map index
Review comment:
better to make this comment more readable
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