[GitHub] [carbondata] KanakaKumar commented on a change in pull request #3181: [CARBONDATA-3356] Support decimal for json schema and Provide better exception for users to solve problem when carbonData DataSource read SDK files with varchar

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KanakaKumar commented on a change in pull request #3181: [CARBONDATA-3356]  Support decimal for json schema and Provide better exception for users to solve problem  when carbonData DataSource read SDK files with varchar
URL: https://github.com/apache/carbondata/pull/3181#discussion_r292779800
 
 

 ##########
 File path: core/src/main/java/org/apache/carbondata/core/util/BlockletDataMapUtil.java
 ##########
 @@ -264,6 +264,16 @@ public static boolean isSameColumnAndDifferentDatatypeInSchema(
             .equalsIgnoreCase(tableColumnList.get(i).getColumnName()) && !indexFileColumnList.get(j)
             .getDataType().getName()
             .equalsIgnoreCase(tableColumnList.get(i).getDataType().getName())) {
+          if ("varchar".equalsIgnoreCase(indexFileColumnList.get(j).getDataType().getName()) &&
+              "string".equalsIgnoreCase(tableColumnList.get(i).getDataType().getName())) {
+            throw new RuntimeException("Datatype of the Column "
 
 Review comment:
   Please use IOException & add throws declaration to method so that callers are clear on how to handle it.
   Or
   I think all the callers are throwing exception. based on the flag. Instead you can return the custom message and throw Exception in caller if the msg is not empty.

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