Github user mateiz commented on a diff in the pull request:
https://github.com/apache/spark/pull/799#discussion_r12723563
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -1166,4 +1166,16 @@ private[spark] object Utils extends Logging {
true
}
}
+
+ /**
+ * Merge a sequence of comma-separated file lists into a single
comma-separated string.
+ * The provided strings may be null or empty to indicate no files.
+ */
+ def mergeFileLists(lists: String*): String = {
--- End diff --
Why was this moved to Utils? The code to deal with nulls and empty strings
and such is pretty specific to `spark-submit`, we don't need other parts of
Spark to use it.
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