Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21123#discussion_r183398030
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/FileDataSourceV2.scala
---
@@ -27,15 +27,13 @@ import org.apache.spark.sql.sources.v2.WriteSupport
*/
trait FileDataSourceV2 extends DataSourceV2 with DataSourceRegister {
/**
- * Returns an optional V1 [[FileFormat]] class of the same file data
source.
+ * Returns n V1 [[FileFormat]] class of the same file data source.
--- End diff --
n -> a
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