cryptoe commented on code in PR #17036:
URL: https://github.com/apache/druid/pull/17036#discussion_r1770810503


##########
processing/src/main/java/org/apache/druid/query/rowsandcols/RearrangedRowsAndColumns.java:
##########
@@ -128,7 +130,16 @@ public boolean isNull(int rowNum)
             @Override
             public Object getObject(int rowNum)
             {
-              return accessor.getObject(pointers[start + rowNum]);
+              Object value = accessor.getObject(pointers[start + rowNum]);
+              if (ColumnType.STRING.equals(getType()) && value instanceof 
List) {

Review Comment:
   Since we require this check for druid 31, we can live with this "hackery". 
Once https://github.com/apache/druid/pull/17038 gets merged, please remove this 
check. 
   cc @Akshat-Jain 



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