Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/13160#discussion_r64436157
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -2245,6 +2245,7 @@ object SparkContext extends Logging {
if (activeContext.get() == null) {
setActiveContext(new SparkContext(config), allowMultipleContexts =
false)
}
+ logWarning("Use an existing SparkContext, some configuration may not
take effect.")
--- End diff --
maybe log this only if there are non-empty configs? same thing for all the
warning messages later.
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