Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/13770#discussion_r67643368
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala ---
@@ -45,7 +45,12 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
* @since 1.4.0
*/
def format(source: String): DataFrameReader = {
- this.source = source
+ if (this.userSpecifiedSource.nonEmpty) {
--- End diff --
i'd probably get rid of this one too -- it is technically behavior changing
and we are now taking away the possibility for users to just override a format.
Did you actually see somebody getting confused by this?
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