akashrn5 commented on a change in pull request #3856:
URL: https://github.com/apache/carbondata/pull/3856#discussion_r474501846



##########
File path: 
integration/spark/src/main/scala/org/apache/spark/sql/execution/command/mutation/merge/CarbonMergeDataSetCommand.scala
##########
@@ -194,29 +210,32 @@ case class CarbonMergeDataSetCommand(
             tuple._2.asJava)
         }
       }
-      Some(UpdateTableModel(true, trxMgr.getLatestTrx,
-        executorErrors, tuple._2, true))
+      Some(UpdateTableModel(isUpdate = true, trxMgr.getLatestTrx,
+        executorErrors, tuple._2, loadAsNewSegment = true))
     } else {
       None
     }
 
-    CarbonInsertIntoWithDf(
-      databaseNameOp = Some(carbonTable.getDatabaseName),
+    val dataFrame = loadDF.select(tableCols.map(col): _*)
+    CarbonInsertIntoCommand(databaseNameOp = Some(carbonTable.getDatabaseName),
       tableName = carbonTable.getTableName,
-      options = Map("fileheader" -> header, "sort_scope" -> "nosort"),
+      options = Map("fileheader" -> header, "sort_scope" -> "no_sort"),

Review comment:
       if we focus on the cdc performance, existing no sort is fine. As your 
point, we cant blindly go with target table's sort scope, because it can happen 
that the target table has the sort scope has no sort.




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