Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/2824#discussion_r19066318
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -272,20 +272,38 @@ private[spark] object Utils extends Logging {
/** Copy all data from an InputStream to an OutputStream */
def copyStream(in: InputStream,
out: OutputStream,
- closeStreams: Boolean = false): Long =
+ closeStreams: Boolean = false,
+ transferToEnabled: Boolean = true): Long =
--- End diff --
To be clear: I agree that `transferTo` should be enabled. My concern here
was simply whether setting `spark.file.transfterTo` will _always_ control the
use of `transferTo`. I'm fine having transferTo as the default, but I'd like
it if there was an option to disable all uses of it.
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