Github user gengliangwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/21667#discussion_r199865933
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/JsonFileFormat.scala
---
@@ -148,6 +144,28 @@ class JsonFileFormat extends TextBasedFileFormat with
DataSourceRegister {
override def hashCode(): Int = getClass.hashCode()
override def equals(other: Any): Boolean =
other.isInstanceOf[JsonFileFormat]
+
+ override def validateDataType(dataType: DataType, isReadPath: Boolean):
Unit = dataType match {
--- End diff --
Then the base class could break other existing file formats, right?
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