Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/18269#discussion_r121286974
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/InMemoryFileIndex.scala
---
@@ -248,60 +245,93 @@ object InMemoryFileIndex extends Logging {
* @return all children of path that match the specified filter.
*/
private def listLeafFiles(
- path: Path,
+ paths: Seq[Path],
hadoopConf: Configuration,
filter: PathFilter,
- sessionOpt: Option[SparkSession]): Seq[FileStatus] = {
- logTrace(s"Listing $path")
- val fs = path.getFileSystem(hadoopConf)
+ sessionOpt: Option[SparkSession]): Seq[(Path, Seq[FileStatus])] = {
+ logTrace(s"Listing ${paths.mkString(", ")}")
// [SPARK-17599] Prevent InMemoryFileIndex from failing if path
doesn't exist
// Note that statuses only include FileStatus for the files and dirs
directly under path,
// and does not include anything else recursively.
- val statuses = try fs.listStatus(path) catch {
- case _: FileNotFoundException =>
- logWarning(s"The directory $path was not found. Was it deleted
very recently?")
- Array.empty[FileStatus]
+ val statuses = paths.flatMap { path =>
+ try {
+ val fs = path.getFileSystem(hadoopConf)
--- End diff --
Yes, it's the same instance and should be reused
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