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[SPARK-5816] Add huge compatibility warning in DriverWrapper #4687

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[SPARK-5816] Add huge compatibility warning in DriverWrapper #4687

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7 changes: 7 additions & 0 deletions core/src/main/scala/org/apache/spark/deploy/worker/DriverWrapper.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -26,10 +26,17 @@ import org.apache.spark.util.{AkkaUtils, ChildFirstURLClassLoader, MutableURLCla

/**
* Utility object for launching driver programs such that they share fate with the Worker process.
* This is used in standalone cluster mode only.
*/
object DriverWrapper {
def main(args: Array[String]) {
args.toList match {
/*
* IMPORTANT: Spark 1.3 provides a stable application submission gateway that is both
* backward and forward compatible across future Spark versions. Because this gateway
* uses this class to launch the driver, the ordering and semantics of the arguments
* here must also remain consistent across versions.
*/
case workerUrl :: userJar :: mainClass :: extraArgs =>
val conf = new SparkConf()
val (actorSystem, _) = AkkaUtils.createActorSystem("Driver",
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