Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14433#discussion_r77125115
--- Diff: core/src/main/scala/org/apache/spark/internal/Logging.scala ---
@@ -135,7 +136,12 @@ private[spark] trait Logging {
val replLevel = Option(replLogger.getLevel()).getOrElse(Level.WARN)
if (replLevel != rootLogger.getEffectiveLevel()) {
System.err.printf("Setting default log level to \"%s\".\n",
replLevel)
- System.err.println("To adjust logging level use
sc.setLogLevel(newLevel).")
+ if (SparkSubmit.isRShell) {
--- End diff --
I personally think it's a bit ugly to pipe through this info with extra
methods and so on. It seems simpler just to amend the message to also state the
right command for sparkr.
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