Github user dbtsai commented on a diff in the pull request: https://github.com/apache/spark/pull/21847#discussion_r205683257 --- Diff: external/avro/src/main/scala/org/apache/spark/sql/avro/AvroSerializer.scala --- @@ -148,7 +165,8 @@ class AvroSerializer(rootCatalystType: DataType, rootAvroType: Schema, nullable: val avroFields = avroStruct.getFields assert(avroFields.size() == catalystStruct.length) val fieldConverters = catalystStruct.zip(avroFields.asScala).map { - case (f1, f2) => newConverter(f1.dataType, resolveNullableType(f2.schema(), f1.nullable)) + case (f1, f2) => newConverter(f1.dataType, resolveNullableType( + f2.schema(), f1.dataType, f1.nullable)) --- End diff -- Nit, formating, ```scala case (f1, f2) => newConverter(f1.dataType, resolveNullableType(f2.schema(), f1.dataType, f1.nullable)) ```
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