zhannngchen commented on code in PR #25346:
URL: https://github.com/apache/doris/pull/25346#discussion_r1361487803


##########
be/src/olap/tablet.cpp:
##########
@@ -2988,11 +2997,12 @@ Status 
Tablet::calc_segment_delete_bitmap(RowsetSharedPtr rowset,
             }
 
             // sequence id smaller than the previous one, so delete current row
-            if (st.is<KEY_ALREADY_EXISTS>()) {
+            if (st.is<KEY_ALREADY_EXISTS>() && (!is_partial_update || 
have_input_seq_column)) {

Review Comment:
   Please also update the comment here, it's a little hard to understand for 
other devs



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