[jira] [Created] (SPARK-7174) Move calling `TaskScheduler.executorHeartbeatReceived` to another thread to avoid blocking the Akka thread pool

["Shixiong Zhu (JIRA)" <ji...@apache.org>]

Shixiong Zhu created SPARK-7174:
-----------------------------------

             Summary: Move calling `TaskScheduler.executorHeartbeatReceived` to another thread to avoid blocking the Akka thread pool
                 Key: SPARK-7174
                 URL: https://issues.apache.org/jira/browse/SPARK-7174
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.3.1, 1.2.2
            Reporter: Shixiong Zhu


HeartbeatReceiver will TaskScheduler.executorHeartbeatReceived, which is a blocking operation because "TaskScheduler.executorHeartbeatReceived" will call 

{code}
    blockManagerMaster.driverEndpoint.askWithReply[Boolean](
      BlockManagerHeartbeat(blockManagerId), 600 seconds)
{code}

finally. Even if it asks from a local Actor, it may block the current Akka thread. E.g., the reply may be dispatched to the same thread of the ask operation. So the reply cannot be processed. An extreme case is setting the thread number of Akka dispatch thread pool to 1.

jstack log:

{code}
"sparkDriver-akka.actor.default-dispatcher-14" daemon prio=10 tid=0x00007f2a8c02d000 nid=0x725 waiting on condition [0x00007f2b1d6d0000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000006197a0868> (a scala.concurrent.impl.Promise$CompletionLatch)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1033)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
	at scala.concurrent.impl.Promise$DefaultPromise.tryAwait(Promise.scala:208)
	at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:218)
	at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
	at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
	at akka.dispatch.MonitorableThreadFactory$AkkaForkJoinWorkerThread$$anon$3.block(ThreadPoolBuilder.scala:169)
	at scala.concurrent.forkjoin.ForkJoinPool.managedBlock(ForkJoinPool.java:3640)
	at akka.dispatch.MonitorableThreadFactory$AkkaForkJoinWorkerThread.blockOn(ThreadPoolBuilder.scala:167)
	at scala.concurrent.Await$.result(package.scala:107)
	at org.apache.spark.rpc.RpcEndpointRef.askWithReply(RpcEnv.scala:355)
	at org.apache.spark.scheduler.DAGScheduler.executorHeartbeatReceived(DAGScheduler.scala:169)
	at org.apache.spark.scheduler.TaskSchedulerImpl.executorHeartbeatReceived(TaskSchedulerImpl.scala:367)
	at org.apache.spark.HeartbeatReceiver$$anonfun$receiveAndReply$1.applyOrElse(HeartbeatReceiver.scala:103)
	at org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$processMessage(AkkaRpcEnv.scala:182)
	at org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1$$anonfun$applyOrElse$4.apply$mcV$sp(AkkaRpcEnv.scala:128)
	at org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$safelyCall(AkkaRpcEnv.scala:203)
	at org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1.applyOrElse(AkkaRpcEnv.scala:127)
	at scala.runtime.AbstractPartialFunction$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$$anon$1.apply(ActorLogReceive.scala:59)
	at org.apache.spark.util.ActorLogReceive$$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$1.aroundReceive(AkkaRpcEnv.scala:94)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
	at akka.actor.ActorCell.invoke(ActorCell.scala:487)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
	at akka.dispatch.Mailbox.run(Mailbox.scala:220)
	at akka.dispatch.ForkJoinExecutorConfigurator$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)
{code}



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