Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/12760#discussion_r61492158
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -2179,6 +2179,16 @@ private[spark] object Utils extends Logging {
.getOrElse(UserGroupInformation.getCurrentUser().getShortUserName())
}
+
+ // Returns the groups to which the current user belongs.
+ def getCurrentUserGroups(sparkConf: SparkConf, username: String):
Set[String] = {
+ val groupMappingServiceProvider =
Utils.classForName(sparkConf.get("spark.user.groups.mapping",
--- End diff --
Also we want this conf to be basically optional so it should be able to set
to empty string and not error out in case people don't want it
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