maropu commented on a change in pull request #28425:
URL: https://github.com/apache/spark/pull/28425#discussion_r418785377



##########
File path: 
external/avro/src/main/scala/org/apache/spark/sql/v2/avro/AvroScan.scala
##########
@@ -65,4 +65,6 @@ case class AvroScan(
   }
 
   override def hashCode(): Int = super.hashCode()
+
+  override def getMetaData(): Map[String, String] = super.metaData

Review comment:
       I changed the code in `FileScan` and the compilation passed;
   ```
   -  protected def getMetadata(): Map[String, String] = {
   +  override def getMetaData(): Map[String, String] = {
   ```




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