Github user viper-kun commented on a diff in the pull request:
https://github.com/apache/spark/pull/5523#discussion_r28501942
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -75,6 +75,8 @@ import org.apache.spark.util._
*/
class SparkContext(config: SparkConf) extends Logging with
ExecutorAllocationClient {
+ var isInited: Boolean = false
--- End diff --
>>>This is going to conflict with the overhaul of the SparkContext
constructor. I don't see why this depends on the constructor finishing since
where you reference the SparkContext, it has been constructed.
In SparkContext constructor, when HeartbeatReceiver create,
timeoutCheckingThread will check expire dead host. if executorLastSeen is
empty, it will execute sc.stop(). Then it will throw exception:
java.lang.NullPointerException
at org.apache.spark.SparkContext.stop(SparkContext.scala:1416)
at
org.apache.spark.HeartbeatReceiver.org$apache$spark$HeartbeatReceiver$$expireDeadHosts(HeartbeatReceiver.scala:134)
at
org.apache.spark.HeartbeatReceiver$$anonfun$receive$1.applyOrElse(HeartbeatReceiver.scala:92)
at
org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$processMessage(AkkaRpcEnv.scala:176)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1$$anonfun$applyOrElse$4.apply$mcV$sp(AkkaRpcEnv.scala:125)
at
org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$safelyCall(AkkaRpcEnv.scala:196)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1.applyOrElse(AkkaRpcEnv.scala:124)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at
org.apache.spark.util.ActorLogReceive$$anon$1.apply(ActorLogReceive.scala:53)
at
org.apache.spark.util.ActorLogReceive$$anon$1.apply(ActorLogReceive.scala:42)
at
scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at
org.apache.spark.util.ActorLogReceive$$anon$1.applyOrElse(ActorLogReceive.scala:42)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1.aroundReceive(AkkaRpcEnv.scala:91)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
at akka.dispatch.Mailbox.run(Mailbox.scala:220)
at
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
at
scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
15/04/16 15:12:16 INFO netty.NettyBlockTransferService: Server created on
53493
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