HyukjinKwon commented on code in PR #44305:
URL: https://github.com/apache/spark/pull/44305#discussion_r1427568014
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala:
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@@ -105,13 +106,14 @@ case class DataSource(
// [[FileDataSourceV2]] will still be used if we call the load()/save()
method in
// [[DataFrameReader]]/[[DataFrameWriter]], since they use method
`lookupDataSource`
// instead of `providingClass`.
- cls.getDeclaredConstructor().newInstance() match {
+ DataSource.newDataSourceInstance(className, cls) match {
case f: FileDataSourceV2 => f.fallbackFileFormat
Review Comment:
and DataStreamReader:
```scala
val v1DataSource = DataSource(
sparkSession,
userSpecifiedSchema = userSpecifiedSchema,
className = source,
options = optionsWithPath.originalMap)
val v1Relation = ds match {
case _: StreamSourceProvider => Some(StreamingRelation(v1DataSource))
case _ => None
}
ds match {
// file source v2 does not support streaming yet.
case provider: TableProvider if
!provider.isInstanceOf[FileDataSourceV2] =>
```
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