Github user mateiz commented on a diff in the pull request:
https://github.com/apache/spark/pull/119#discussion_r10532081
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -130,6 +130,18 @@ class SparkContext(
val isLocal = (master == "local" || master.startsWith("local["))
+ // Create a classLoader for use by the driver so that jars added via
addJar are available to the
+ // driver. Do this before all other initialization so that any thread
pools created for this
+ // SparkContext uses the class loader.
+ // In the future it might make sense to expose this to users so they can
assign it as the
+ // context class loader for other threads.
+ // Note that this is config-enabled as classloaders can introduce subtle
side effects
+ private[spark] val classLoader = if
(conf.getBoolean("spark.driver.loadAddedJars", false)) {
+ val loader = new SparkURLClassLoader(Array.empty[URL],
this.getClass.getClassLoader)
--- End diff --
Maybe you should set its parent to the current thread's context class
loader if one exists. Otherwise users who try to add some class loader before
starting SparkContext (e.g. if they're in some server environment) will use it.
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