Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/1218#discussion_r15823358
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -1531,18 +1532,6 @@ object SparkContext extends Logging {
throw new SparkException("YARN mode not available ?", e)
}
}
- val backend = try {
- val clazz =
-
Class.forName("org.apache.spark.scheduler.cluster.YarnClusterSchedulerBackend")
- val cons = clazz.getConstructor(classOf[TaskSchedulerImpl],
classOf[SparkContext])
- cons.newInstance(scheduler,
sc).asInstanceOf[CoarseGrainedSchedulerBackend]
- } catch {
- case e: Exception => {
- throw new SparkException("YARN mode not available ?", e)
- }
- }
- scheduler.initialize(backend)
- scheduler
--- End diff --
I haven't looked at this in detail yet, but it seems a bit odd to me to
move this particular one down into the YarnClusterScheduler but the rest define
backend and initialize them here. I would think it would be easier to read
having it here.
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