Github user ryan-williams commented on a diff in the pull request:
https://github.com/apache/spark/pull/2848#discussion_r21710708
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -412,6 +408,85 @@ private[spark] object Utils extends Logging {
}
/**
+ * Download a file from `in` to `tempFile`, then move it to `destFile`,
checking whether
+ * `destFile` already exists, has the same contents as the downloaded
file, and can be
+ * overwritten.
+ *
+ * @param url URL that `sourceFile` originated from, for logging
purposes.
+ * @param in InputStream to download.
+ * @param tempFile File path to download `in` to.
+ * @param destFile File path to move `tempFile` to.
+ * @param fileOverwrite Whether to delete/overwrite an existing
`destFile` that does not match
+ * `sourceFile`
+ */
+ private def downloadStreamAndMove(
+ url: String,
+ in: InputStream,
+ tempFile: File,
+ destFile: File,
+ fileOverwrite: Boolean): Unit = {
+
+ val out = new FileOutputStream(tempFile)
+ Utils.copyStream(in, out, closeStreams = true)
+ copyFile(url, tempFile, destFile, fileOverwrite, removeSourceFile =
true)
+
--- End diff --
done
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