Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18078#discussion_r118636289
--- Diff: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala ---
@@ -825,6 +837,43 @@ object SparkSubmit extends CommandLineUtils {
.mkString(",")
if (merged == "") null else merged
}
+
+ /**
+ * Download a list of remote files to temp local files. If the file is
local, the original file
+ * will be returned.
+ * @param fileList A comma separated file list, it cannot be null.
+ * @return A comma separated local files list.
+ */
+ private[deploy] def downloadFileList(
+ fileList: String,
+ hadoopConf: HadoopConfiguration): String = {
+ fileList.split(",").map(downloadFile(_, hadoopConf)).mkString(",")
+ }
+
+ /**
+ * Download remote file to a temporary local file. If the file is local,
the original file
--- End diff --
How about?
> Downloads a file from the remote to a local temporary directory. If the
input path points to a local path, returns it with no operation
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