chaoyli commented on a change in pull request #3424:
URL: https://github.com/apache/incubator-doris/pull/3424#discussion_r417936230
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File path: be/src/olap/rowset/segment_group.cpp
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@@ -697,6 +697,13 @@ const TabletSchema& SegmentGroup::get_tablet_schema() {
return *_schema;
}
+int SegmentGroup::get_num_zone_map_columns() {
Review comment:
ZoneMap is not used for un-sorted column.
Most of the time, you will have to filter the delete predicate row by row.
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