Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/853#discussion_r12987475
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -1166,4 +1166,35 @@ private[spark] object Utils extends Logging {
true
}
}
+
+ /** Return the URI of the input path. If a relative path is given,
assume it is local. */
+ def resolveURI(path: String, testWindows: Boolean = false): URI = {
+
+ // On Windows, file names cannot contain backslashes and colons,
+ // and each drive contains only a single alphabet character
+ val windows = isWindows || testWindows
+ val sanitizedPath = if (windows) path.replace("\\", "/") else path
+ val windowsDrive = "([a-zA-Z])".r
+
+ val uri = new URI(sanitizedPath)
+ uri.getScheme match {
+ case windowsDrive(d) if windows =>
+ new URI("file:/" + uri.toString.stripPrefix("/"))
+ case null =>
+ val fragment = uri.getFragment
--- End diff --
It would be good to document that we preserve the fragment because it has a
special meaning for YARN URI's.
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