Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/13444#discussion_r66682974
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/ListingFileCatalog.scala
---
@@ -66,30 +66,13 @@ class ListingFileCatalog(
}
override def refresh(): Unit = {
- val files = listLeafFiles(paths)
+ val files = HadoopFsRelation.listLeafFilesInParallel(paths,
hadoopConf, sparkSession)
cachedLeafFiles =
new mutable.LinkedHashMap[Path, FileStatus]() ++= files.map(f =>
f.getPath -> f)
cachedLeafDirToChildrenFiles =
files.toArray.groupBy(_.getPath.getParent)
cachedPartitionSpec = null
}
- protected def listLeafFiles(paths: Seq[Path]):
mutable.LinkedHashSet[FileStatus] = {
- if (paths.length >=
sparkSession.sessionState.conf.parallelPartitionDiscoveryThreshold) {
- HadoopFsRelation.listLeafFilesInParallel(paths, hadoopConf,
sparkSession.sparkContext)
--- End diff --
Sorry. Let's keep the current behavior for now. It will be good to have a
very small PR for this change. So we can try to get it in branch 2.0.
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