Github user liancheng commented on a diff in the pull request: https://github.com/apache/spark/pull/14038#discussion_r69520156 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/fileSourceInterfaces.scala --- @@ -172,6 +171,13 @@ case class HadoopFsRelation( } /** + * A helper class to list up qualified files in parallel. + */ +private[spark] abstract class SerializablePathFilter extends PathFilter with Serializable { --- End diff -- Oh I see, because parallel file listing may filter input files on executor side.
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