Github user ssimeonov commented on a diff in the pull request:
https://github.com/apache/spark/pull/13623#discussion_r66724148
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/PartitioningAwareFileCatalog.scala
---
@@ -96,7 +96,10 @@ abstract class PartitioningAwareFileCatalog(
protected def inferPartitioning(): PartitionSpec = {
// We use leaf dirs containing data files to discover the schema.
- val leafDirs = leafDirToChildrenFiles.keys.toSeq
+ val leafDirs = leafDirToChildrenFiles.filterNot {
+ // SPARK-15895: Metadata files like Parquet summary files should not
be counted as data files.
+ case (_, files) => files.forall(_.getPath.getName.startsWith("_"))
--- End diff --
For compatibility with
https://github.com/rxin/spark/blob/705a76f84605f1d54e98caae7f81631bf80c8feb/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/fileSourceInterfaces.scala#L347
would it be helpful to also exclude any `.`-prefixed files?
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