rdblue commented on a change in pull request #24233: [SPARK-26356][SQL] remove
SaveMode from data source v2
URL: https://github.com/apache/spark/pull/24233#discussion_r271929066
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File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala
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@@ -267,6 +266,23 @@ final class DataFrameWriter[T] private[sql](ds:
Dataset[T]) {
import
org.apache.spark.sql.execution.datasources.v2.DataSourceV2Implicits._
provider.getTable(dsOptions) match {
+ // TODO: for backward compatibility reasons, the builtin file source
needs to support all
+ // the save modes, which violates the semantic of `TableProvider`.
Here we special-case
+ // file source and pass the save mode to file source directly. This
hack can be removed
+ // after we figure out a general interface for path-based data sources.
+ case table: FileTable =>
Review comment:
I'm adding this to my agenda for the sync-up.
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