Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/22504#discussion_r228671856 --- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala --- @@ -2328,7 +2328,14 @@ private[spark] object Utils extends Logging { * configure a new log4j level */ def setLogLevel(l: org.apache.log4j.Level) { - org.apache.log4j.Logger.getRootLogger().setLevel(l) + val rootLogger = org.apache.log4j.Logger.getRootLogger() + rootLogger.setLevel(l) + rootLogger.getAllAppenders().asScala.foreach { tmp => + tmp match { --- End diff -- You can have the cases directly in the body of the foreach.
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