kangpinghuang commented on issue #771: select lead to core dump URL: https://github.com/apache/incubator-doris/issues/771#issuecomment-474213951 The reason is the table's second key is varchar, so when ColumnData call _seek_to_row(), it will use _find_position_by_full_key. And It will set num_rows_load to 1, leading to the check failed. I think the DCHECK is useless because get_block will get just the required lines from the block, not necessary to get total block data every time.
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