[GitHub] [spark] HyukjinKwon commented on a change in pull request #26907: [SPARK-30267][SQL] Avro arrays can be of any List

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HyukjinKwon commented on a change in pull request #26907: [SPARK-30267][SQL] Avro arrays can be of any List
URL: https://github.com/apache/spark/pull/26907#discussion_r358557382
 
 

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 File path: external/avro/src/main/scala/org/apache/spark/sql/avro/AvroDeserializer.scala
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 @@ -167,7 +167,7 @@ class AvroDeserializer(rootAvroType: Schema, rootCatalystType: DataType) {
       case (ARRAY, ArrayType(elementType, containsNull)) =>
         val elementWriter = newWriter(avroType.getElementType, elementType, path)
         (updater, ordinal, value) =>
-          val array = value.asInstanceOf[GenericData.Array[Any]]
+          val array = value.asInstanceOf[java.util.List[Any]]
 
 Review comment:
   Can you add a test? in which case it becomes a regular list?

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