Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/19130#discussion_r139576228 --- Diff: core/src/main/scala/org/apache/spark/internal/config/package.scala --- @@ -385,4 +385,13 @@ package object config { .checkValue(v => v > 0 && v <= Int.MaxValue, s"The buffer size must be greater than 0 and less than ${Int.MaxValue}.") .createWithDefault(1024 * 1024) + + private[spark] val FORCE_DOWNLOAD_SCHEMES = + ConfigBuilder("spark.yarn.dist.forceDownloadSchemes") + .doc("Comma-separated list of schemes for which files will be downloaded to the " + + "local disk prior to being added to YARN's distributed cache. For use in cases " + + "where the YARN service does not support schemes that are supported by Spark.") --- End diff -- can you give an example of these schemes?
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