clintropolis commented on code in PR #12953:
URL: https://github.com/apache/druid/pull/12953#discussion_r953538251


##########
processing/src/main/java/org/apache/druid/segment/LongDimensionIndexer.java:
##########
@@ -47,7 +48,7 @@ public class LongDimensionIndexer implements 
DimensionIndexer<Long, Long, Long>
   public EncodedKeyComponent<Long> 
processRowValsToUnsortedEncodedKeyComponent(@Nullable Object dimValues, boolean 
reportParseExceptions)
   {
     if (dimValues instanceof List) {
-      throw new UnsupportedOperationException("Numeric columns do not support 
multivalue rows.");
+      throw new ParseException(null, "Numeric columns do not support 
multivalue rows.");
     }

Review Comment:
   is this check even necessary? `DimensionHandlerUtils.convertObjectToLong` 
will throw a parse exception for unknown types, same comment for other numeric 
indexers



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