Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/3233#discussion_r23860361 --- Diff: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala --- @@ -327,8 +326,14 @@ object SparkSubmit { printStream.println("\n") } - val loader = new ExecutorURLClassLoader(new Array[URL](0), - Thread.currentThread.getContextClassLoader) + val loader = + if (sysProps.getOrElse("spark.driver.userClassPathFirst", "false").toBoolean) { + new ChildFirstURLClassLoader(new Array[URL](0), --- End diff -- That kinda clashes with Sandy's comment, which I agree with, that calling them "Executor" is misleading since they're used in other contexts. And frankly, compared to the other changes here, changing those class names is a very small one.
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