Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/11999#discussion_r57601423
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala ---
@@ -549,15 +549,18 @@ class HDFSFileCatalog(
refresh()
+ private def isInvalidFile(f: FileStatus): Boolean =
+ f.getPath.getName.startsWith("_") || f.getLen == 0
--- End diff --
Actually there is an existing [CSV test case][1] that cover empty CSV input
files. I have to [remove the empty file assertion][2] in `FileSourceStrategy`
for this test case when implementing `buildReader()` for CSV.
[1]:
https://github.com/apache/spark/blob/e5a1b301fbe191f1a9627a1083d960c98f543d13/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala#L248-L256
[2]: https://github.com/apache/spark/pull/12002#discussion_r57594679
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