Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4747#discussion_r25290402
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -679,12 +680,25 @@ private[spark] object Utils extends Logging {
* If no directories could be created, this will return an empty list.
*/
private[spark] def getOrCreateLocalRootDirs(conf: SparkConf):
Array[String] = {
+ if (localRootDirs == null) {
--- End diff --
(On a side note, this patch might do some weird things if the method is
called with different confs.)
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