Github user lw-lin commented on a diff in the pull request:
https://github.com/apache/spark/pull/16987#discussion_r103604050
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/FileStreamSource.scala
---
@@ -190,32 +190,31 @@ class FileStreamSource(
val startTime = System.nanoTime
var allFiles: Seq[FileStatus] = null
- if (sourceHasMetadata.isEmpty) {
- if (FileStreamSink.hasMetadata(Seq(path), hadoopConf)) {
- sourceHasMetadata = Some(true)
- allFiles = allFilesUsingMetadataLogFileIndex()
- } else {
- allFiles = allFilesUsingInMemoryFileIndex()
- if (allFiles.isEmpty) {
- // we still cannot decide
+ sourceHasMetadata match {
--- End diff --
simply switched to `sourceHasMetadata match { case... case ... case ...}`
actual diff is quite small
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