Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/14038#discussion_r69519641
--- 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 --
Extending from `PathFilter` makes internal implementation a little bit
easier, but I'd prefer to avoid depending on Hadoop classes/interfaces in Spark
SQL public interfaces whenever possible.
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