ShreelekhyaG commented on a change in pull request #4142:
URL: https://github.com/apache/carbondata/pull/4142#discussion_r646510601



##########
File path: 
integration/spark/src/main/java/org/apache/spark/sql/secondaryindex/query/SecondaryIndexQueryResultProcessor.java
##########
@@ -293,26 +300,32 @@ private void processResult(List<CarbonIterator<RowBatch>> 
detailQueryResultItera
         // dictionary
         preparedRow[i] = wrapper.getDictionaryKeyByIndex(dictionaryIndex++);
       } else {
-        if (isComplexColumn) {
-          // get the flattened data of complex column
-          byte[] complexKeyByIndex = 
wrapper.getComplexKeyByIndex(complexIndex);
-          ByteBuffer byteArrayInput = ByteBuffer.wrap(complexKeyByIndex);
-          GenericQueryType genericQueryType =
-              
complexDimensionInfoMap.get(complexColumnParentBlockIndexes[complexIndex++]);
-          int complexDataLength = byteArrayInput.getShort(2);
-          // In case, if array is empty
-          if (complexDataLength == 0) {
-            complexDataLength = complexDataLength + 1;
-          }
-          // get flattened array data
-          Object[] complexFlattenedData = new Object[complexDataLength];
-          Object[] data = 
genericQueryType.getObjectArrayDataBasedOnDataType(byteArrayInput);
-          for (int index = 0; index < complexDataLength; index++) {
-            complexFlattenedData[index] =
-                getData(data, index, dims.getColumnSchema().getDataType());
+        if (isComplexColumn || isComplexColumnAdded) {

Review comment:
       done. Added testcases for this scenario: `Test restructured 
array<string> and existing string column as index columns on SI with 
compaction`, `Test restructured array<string> and string columns as index 
columns on SI with compaction`




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