Github user tedyu commented on a diff in the pull request:
https://github.com/apache/spark/pull/13718#discussion_r67970641
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/FileStreamSource.scala
---
@@ -120,7 +120,13 @@ class FileStreamSource(
val catalog = new ListingFileCatalog(sparkSession, globbedPaths,
options, Some(new StructType))
val files = catalog.allFiles().map(_.getPath.toUri.toString)
val endTime = System.nanoTime
- logInfo(s"Listed ${files.size} in ${(endTime.toDouble - startTime) /
1000000}ms")
+ val listingTimeMs = (endTime.toDouble - startTime) / 1000000
+ if (listingTimeMs > 2000) {
+ // Output a warning when listing files uses more than 2 seconds.
+ logWarning(s"Listed ${files.size} file(s) in $listingTimeMs ms")
--- End diff --
Should this be at DEBUG level ?
The user wouldn't know what to do seeing these warnings.
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