HeartSaVioR commented on a change in pull request #26994: [SPARK-30339][SQL] 
Avoid to fail twice in function lookup
URL: https://github.com/apache/spark/pull/26994#discussion_r361846764
 
 

 ##########
 File path: 
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveSessionCatalog.scala
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 @@ -117,12 +117,25 @@ private[sql] class HiveSessionCatalog(
     try {
       lookupFunction0(name, children)
     } catch {
-      case NonFatal(_) =>
 
 Review comment:
   > But we still need to append another case NonFatal(e) below to make sure 
that exception will be threw finally for the function without any DecimalType 
children.
   
   Could you please elaborate? If I'm not missing anything, the exception 
doesn't match any cases, exception will be propagated to caller.

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